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Institute
- Institut für Botanik und Landschaftsökologie & Botanischer Garten (29)
- Institut für Chemie und Biochemie (28)
- Kliniken und Polikliniken für Innere Medizin (25)
- Abteilung für Mikrobiologie und Molekularbiologie (23)
- Institut für Pharmazie (19)
- Interfakultäres Institut für Genetik und Funktionelle Genomforschung (MNF) (19)
- Klinik und Poliklinik für Neurologie (18)
- Institut für Community Medicine (17)
- Zoologisches Institut und Museum (17)
- Institut für Immunologie u. Transfusionsmedizin - Abteilung Immunologie (16)
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- MDPI (92)
- Frontiers Media S.A. (65)
- Wiley (45)
- John Wiley & Sons, Inc. (12)
- SAGE Publications (9)
- S. Karger AG (6)
- Public Library of Science (PLoS) (4)
- Springer Nature (4)
- BioMed Central (BMC) (3)
- De Gruyter (3)
The thesis investigates the occurrence of the Early Modern European witch-hunt within the distinctively diverse society of the Grand Duchy of Lithuania. Positioned at the intersection of Latin and post-Byzantine cultures, along with Western and Eastern Christianity, this region lay on the frontlines of the Reformation and Counter-Reformation. The research aims to analyze the specific characteristics of the witch-hunt in this area, considering it a case study of social and cultural interaction within a borderland. It focuses particularly on identifying the distinctive aspects of the Lithuanian witch-hunt, examining the social and cultural roots of the witch trials, and exploring their relationship to the broader social and cultural developments of the period.
Central to this study is a detailed examination of the witch trials and an analysis of court materials. The thesis posits a socio-cultural interpretation of witch persecutions, arguing that they were culturally influenced manifestations of social tensions, enacted through legal mechanisms. The emergence of new Early Modern challenges, such as the social consequences of agrarian reform, the expansion of manorialism, and serfdom, led to novel tensions, conflicts, and responses, including accusations of witchcraft. The importation of authoritative foreign ideas about witchcraft reinvigorated, facilitated, and shaped pre-existing moderate indigenous beliefs, a process facilitated by religious struggles and Catholic post-Tridentine confessionalization. The Lithuanian legal system provided an environment conducive to an intensive witch-hunt, with witchcraft being a secular grave felony tried in highly decentralized and poorly supervised courts. However, this potential was largely unrealized. The study argues that the cultural diversity of the society played a major role in inhibiting the spread of Western witchcraft discourse, thereby limiting the extent of the witch-hunt in the Grand Duchy of Lithuania.
Das Ziel der vorliegenden Studie war zum einen die retrospektive Abbildung der qPCR-Werte von BCR-ABL und der Medikamentenadhärenz und zum anderen die Identifikation von Einflussfaktoren und Prädiktoren für die Medikamentenadhärenz von Patientinnen und Patienten mit Chronischer Myeloischer Leukämie. Als Parameter des molekularen Therapieansprechens wurden Ergebnisse der routinemäßig durchgeführten Bestimmungen der BCR-ABL-Werte erfasst. Zur Bestimmung der Adhärenz dienten standardisierte psychometrische Instrumente, welche zu einer Fragebogenbatterie zusammengefasst wurden.
Von 13 onkologischen Praxen und Kliniken in Mecklenburg-Vorpommern, welche sich initial bereit erklärt hatten, nahmen sieben Einrichtungen an der Studie teil. Aus diesen sieben onkologischen Behandlungseinrichtungen konnten die Fragebögen von 44 Patienten in die Untersuchung mit einbezogen werden. Insgesamt wurden drei Befragungen durchgeführt in einem Abstand von jeweils einem Jahr. Der Großteil der Patientinnen und Patienten befand sich im Untersuchungszeitraum in First-line TKI-Therapie. Als biologische Validation für die Medikamentenadhärenz wurde das molekulare Ansprechen auf den TKI benutzt. Gemäß der ELN-Leitlinien zur Behandlung von Patientinnen und Patienten mit CML stellt das Erreichen einer „Major Molecular Response“ (MMR=BCR-ABL / ABL-Ratio ≤ 0,1 %) ein optimales Therapieansprechen dar. Bei 34 Patientinnen und Patienten (77,3 %) konnte ein optimales Therapieansprechen in den 12 Monaten vor der Datenerhebung nachgewiesen werden. Das molekulare Ansprechen von 6 Patientinnen und Patienten (13,6 %) schwankte ohne Verlust der MMR. Bei 4 Patientinnen und Patienten (9,1 %) wurde ein Therapieversagen (nach ELN-Empfehlungen) deutlich. Das molekulare Ansprechen in den vergangenen 12 Monaten vor Beginn der Untersuchung korrelierte signifikant mit dem initialen molekularen Ansprechen. Die Auswertung ergab laut Patienten-Selbsteinschätzung eine fast durchgängig gute Medikamentenadhärenz. Ein Zusammenhang zwischen Adhärenz-Selbst-einschätzung und dem molekularen Ansprechen konnte nicht nachgewiesen werden.
Untersucht wurde auch das Patientenwissen über die CML. Insgesamt zeigte ein Viertel der Patientinnen und Patienten gute bis befriedigende Kenntnisse. Das vorhandene Wissen geht zumeist auf die Informationen der behandelnden Onkologen zurück. Mehr als 50 % der Patientinnen und Patienten wünscht sich mehr Informationen zur CML und deren Behandlung. Entgegen der aktuellen Studienlage scheint das individuelle Wissen die Medikamentenadhärenz in unserer Studie kaum zu beeinflussen. In unserer Studie konnten wir allerdings feststellen, dass höheres Wissen über die CML signifikant mit geringerer wahrgenommener Bedrohlichkeit durch die CML korrelierte. Hinsichtlich des Geschlechts und des Patientenalters konnte kein signifikanter Zusammenhang mit dem Wissen über die CML detektiert werden. Patientinnen und Patienten mit geringerer Erkrankungsdauer zeigten ein höheres Wissen über das Krankheitsbild der CML. Wichtig ist es, Komorbiditäten wie depressive Symptome durch enge Anbindung an psychologische Zentren mit zu betreuen. Ein stabiles soziales Umfeld, ein gutes Arzt-Patienten- Verhältnis sowie eine starke subjektive Motivation einer jeden Patientin bzw. eines jeden Patienten sind sicherlich zentrale Säulen einer guten Adhärenz. Diese Faktoren bieten gleichzeitig Ansatzpunkte für Interventionen zur Steigerung der Therapietreue.
Neben Hygge, Krimis, Sauna und Lakritz gehört wohl nichts so eindeutig zum deutschen Stereotyp von den nordischen Gesellschaften wie der Wohlfahrtsstaat. Dabei wird er im Norden seit seiner Einführung zwiespältig diskutiert: Entmündigt er seine Bürger und Bürgerinnen? Und wie geht es dem Sozialstaat nach über 20 Jahren Neoliberalismus? Auch die Belletristik verhandelt den Wohlfahrtsstaat seit seinen Anfängen, und die Wissenschaft hat sich dem Thema in den letzten Jahren intensiv angenommen. Wie ubiquitär der Wohlfahrtsstaat als Vorstellungsrahmen für die Imagination eines gelungenen Lebens tatsächlich ist, möchte ich einleitend zu dieser Rubrik an einem eher untypischen literarischen Beispiel belegen:
Variability of Thyroid Measurements from Ultrasound and Laboratory in a Repeated Measurements Study
(2020)
Background: Variability of measurements in medical research can be due to different sources. Quantification of measurement errors facilitates probabilistic sensitivity analyses in future research to minimize potential bias in epidemiological studies. We aimed to investigate the variation of thyroid-related outcomes derived from ultrasound (US) and laboratory analyses in a repeated measurements study. Subjects and Methods: Twenty-five volunteers (13 females, 12 males) aged 22–70 years were examined once a month over 1 year. US measurements included thyroid volume, goiter, and thyroid nodules. Laboratory measurements included urinary iodine concentrations and serum levels of thyroid-stimulating hormone (TSH), free triiodothyronine (fT3), free thyroxine (fT4), and thyroglobulin. Variations in continuous thyroid markers were assessed as coefficient of variation (CV) defined as mean of the individual CVs with bootstrapped confidence intervals and as intraclass correlation coefficients (ICCs). Variations in dichotomous thyroid markers were assessed by Cohen’s kappa. Results: CV was highest for urinary iodine concentrations (56.9%), followed by TSH (27.2%), thyroglobulin (18.2%), thyroid volume (10.5%), fT3 (8.1%), and fT4 (6.3%). The ICC was lowest for urinary iodine concentrations (0.42), followed by fT3 (0.55), TSH (0.64), fT4 (0.72), thyroid volume (0.87), and thyroglobulin (0.90). Cohen’s kappa values for the presence of goiter or thyroid nodules were 0.64 and 0.70, respectively. Conclusion: Our study provides measures of variation for thyroid outcomes, which can be used for probabilistic sensitivity analyses of epidemiological data. The low intraindividual variation of serum thyroglobulin in comparison to urinary iodine concentrations emphasizes the potential of thyroglobulin as marker for the iodine status of populations.
TOPORAZ
(2020)
ZusammenfassungTOPORAZ ist eine virtuelle Forschungsumgebung, die ein wissenschaftlich fundiertes 3D-Modell des Hauptmarktes der Stadt Nürnberg in vier Zeitstufen mit einer Datenbank verknüpft. Diese Plattform für die objekt- und raumbezogene geisteswissenschaftliche Forschung verbindet vielfältige Quellen und Literatur mit den Gebäuden des 3D-Modells über Verknüpfungspunkte (Hotspots). TOPORAZ unterstützt übergreifende Forschungsansätze und vernetztes, transdisziplinäres Arbeiten.
Coastal sand dunes near the Baltic Sea are a dynamic environment marking the boundary between land and sea and oftentimes covered by Scots pine (Pinus sylvestris L.) forests. Complex climate-environmental interactions characterize these ecosystems and largely determine the productivity and state of these coastal forests. In the face of future climate change, understanding interactions between coastal tree growth and climate variability is important to promote sustainable coastal forests. In this study, we assessed the effect of microsite conditions on tree growth and the temporal and spatial variability of the relationship between climate and Scots pine growth at nine coastal sand dune sites located around the south Baltic Sea. At each site, we studied the growth of Scots pine growing at microsites located at the ridge and bottom of a dune and built a network of 18 ring-width and 18 latewood blue intensity chronologies. Across this network, we found that microsite has a minor influence on ring-width variability, basal area increment, latewood blue intensity, and climate sensitivity. However, at the local scale, microsite effects turned out to be important for growth and climate sensitivity at some sites. Correlation analysis indicated that the strength and direction of climate-growth responses for the ring-width and blue intensity chronologies were similar for climate variables over the 1903–2016 period. A strong and positive relationship between ring-width and latewood blue intensity chronologies with winter-spring temperature was detected at local and regional scales. We identified a relatively strong, positive influence of winter-spring/summer moisture availability on both tree-ring proxies. When climate-growth responses between two intervals (1903–1959, 1960–2016) were compared, the strength of growth responses to temperature and moisture availability for both proxies varied. More specifically, for the ring-width network, we identified decreasing temperature-growth responses, which is in contrast to the latewood blue intensity network, where we documented decreasing and increasing temperature-growth relationships in the north and south respectively. We conclude that coastal Scots pine forests are primarily limited by winter-spring temperature and winter-spring/summer drought despite differing microsite conditions. We detected some spatial and temporal variability in climate-growth relationships that warrant further investigation.
Chondrosarcoma is the second most common malign bone tumor in adults. Surgical
resection of the tumor is recommended because of its resistance to clinical treatment such as
chemotherapy and radiation therapy. Thus, the prognosis for patients mainly depends on sufficient
surgical resection. Due to this, research on alternative therapies is needed. Cold atmospheric plasma
(CAP) is an ionized gas that contains various reactive species. Previous studies have shown an
anti-oncogenic potential of CAP on different cancer cell types. The current study examined the effects
of treatment with CAP on two chondrosarcoma cell lines (CAL-78, SW1353). Through proliferation
assay, the cell growth after CAP-treatment was determined. A strong antiproliferative effect for
both cell lines was detected. By fluorescein diacetate (FDA) assay and ATP release assay, alterations
in the cell membrane and associated translocation of low molecular weight particles through the
cytoplasmic membrane were observed. In supernatant, the non-membrane-permeable FDA and
endogenously synthesized ATP detected suggest an increased membrane permeability after CAP
treatment. Similar results were shown by the dextran-uptake assay. Furthermore, fluorescence
microscopic G-/F-actin assay was performed. G- and F-actin were selectively dyed, and the ratio
was measured. The presented results indicate CAP-induced changes in cell membrane function and
possible alterations in actin-cytoskeleton, which may contribute to the antiproliferative effects of CAP.
Non-alcoholic fatty liver disease (NAFLD) is gaining in importance and is linked to obesity.
Especially, the development of fibrosis and portal hypertension in NAFLD patients requires treatment.
Transgenic TGR(mREN2)27 rats overexpressing mouse renin spontaneously develop NAFLD with
portal hypertension but without obesity. This study investigated the additional role of obesity in this
model on the development of portal hypertension and fibrosis. Obesity was induced in twelve-week
old TGR(mREN2)27 rats after receiving Western diet (WD) for two or four weeks. Liver fibrosis
was assessed using standard techniques. Hepatic expression of transforming growth factor-β1
(TGF-β1), collagen type Iα1, α-smooth muscle actin, and the macrophage markers Emr1, as well as
the chemoattractant Ccl2, interleukin-1β (IL1β) and tumor necrosis factor-α (TNFα) were analyzed.
Assessment of portal and systemic hemodynamics was performed using the colored microsphere
technique. As expected, WD induced obesity and liver fibrosis as confirmed by Sirius Red and Oil Red
O staining. The expression of the monocyte-macrophage markers, Emr1, Ccl2, IL1β and TNFα were
increased during feeding of WD, indicating infiltration of macrophages into the liver, even though this
increase was statistically not significant for the EGF module-containing mucin-like receptor (Emr1)
mRNA expression levels. Of note, portal pressure increased with the duration of WD compared
to animals that received a normal chow. Besides obesity, WD feeding increased systemic vascular
resistance reflecting systemic endothelial and splanchnic vascular dysfunction. We conclude that
transgenic TGR(mREN2)27 rats are a suitable model to investigate NAFLD development with liver
fibrosis and portal hypertension. Tendency towards elevated expression of Emr1 is associated with
macrophage activity point to a significant role of macrophages in NAFLD pathogenesis, probably
due to a shift of the renin–angiotensin system towards a higher activation of the classical pathway.The hepatic injury induced by WD in TGR(mREN2)27 rats is suitable to evaluate different stages of
fibrosis and portal hypertension in NAFLD with obesity
Previous studies have reported the fundamental role of immunoregulatory
proteins in the clinical phenotype and outcome of sepsis. This study investigated two functional single
nucleotide polymorphisms (SNPs) of T cell immunoglobulin and mucin domain-containing protein 3
(TIM-3), which has a negative stimulatory function in the T cell immune response. Methods: Patients
with sepsis (n = 712) were prospectively enrolled from three intensive care units (ICUs) at the University
Medical Center Goettingen since 2012. All patients were genotyped for the TIM-3 SNPs rs1036199 and
rs10515746. The primary outcome was 28-day mortality. Disease severity and microbiological findings
were secondary endpoints. Results: Kaplan–Meier survival analysis demonstrated a significantly
lower 28-day mortality for TIM-3 rs1036199 AA homozygous patients compared to C-allele carriers
(18% vs. 27%, p = 0.0099) and TIM-3 rs10515746 CC homozygous patients compared to A-allele
carriers (18% vs. 26%, p = 0.0202). The TIM-3 rs1036199 AA genotype and rs10515746 CC genotype
remained significant predictors for 28-day mortality in the multivariate Cox regression analysis after
adjustment for relevant confounders (adjusted hazard ratios: 0.67 and 0.70). Additionally, patients
carrying the rs1036199 AA genotype presented more Gram-positive and Staphylococcus epidermidis
infections, and rs10515746 CC homozygotes presented more Staphylococcus epidermidis infections.
Conclusion: The studied TIM-3 genetic variants are associated with altered 28-day mortality and
susceptibility to Gram-positive infections in sepsis.
The local anesthetic lidocaine, which has been used extensively during liposuction, has been
reported to have cytotoxic effects and therefore would be unsuitable for use in autologous lipotransfer.
We evaluated the effect of lidocaine on the distribution, number, and viability of adipose-derived stem
cells (ASCs), preadipocytes, mature adipocytes, and leukocytes in the fatty and fluid portion of the
lipoaspirate using antibody staining and flow cytometry analyses. Adipose tissue was harvested from
11 female patients who underwent liposuction. Abdominal subcutaneous fat tissue was infiltrated
with tumescent local anesthesia, containing lidocaine on the left and lacking lidocaine on the right
side of the abdomen, and harvested subsequently. Lidocaine had no influence on the relative
distribution, cell number, or viability of ASCs, preadipocytes, mature adipocytes, or leukocytes in the
stromal-vascular fraction. Assessing the fatty and fluid portions of the lipoaspirate, the fatty portions
contained significantly more ASCs (p < 0.05), stem cells expressing the preadipocyte marker Pref-1
(p < 0.01 w/lidocaine, p < 0.05 w/o lidocaine), and mature adipocytes (p < 0.05 w/lidocaine, p < 0.01
w/o lidocaine) than the fluid portions. Only the fatty portion should be used for transplantation. This
study found no evidence that would contraindicate the use of lidocaine in lipotransfer. Limitations of
the study include the small sample size and the inclusion of only female patients.
Natural products comprise a rich reservoir for innovative drug leads and are a constant
source of bioactive compounds. To find pharmacological targets for new or already known
natural products using modern computer-aided methods is a current endeavor in drug discovery.
Nature’s treasures, however, could be used more effectively. Yet, reliable pipelines for the
large-scale target prediction of natural products are still rare. We developed an in silico workflow
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Int. J. Mol. Sci. 2020, 21, 7102 2 of 18
consisting of four independent, stand-alone target prediction tools and evaluated its performance
on dihydrochalcones (DHCs)—a well-known class of natural products. Thereby, we revealed
four previously unreported protein targets for DHCs, namely 5-lipoxygenase, cyclooxygenase-1,
17β-hydroxysteroid dehydrogenase 3, and aldo-keto reductase 1C3. Moreover, we provide a
thorough strategy on how to perform computational target predictions and guidance on using the
respective tools.
Membrane monocarboxylate transporter 1 (SLC16A1/MCT1) plays an important role in
hepatocyte homeostasis, as well as drug handling. However, there is no available information
about the impact of liver pathology on the transporter levels and function. The study was aimed to
quantify SLC16A1 mRNA (qRT-PCR) and MCT1 protein abundance (liquid chromatography–tandem
mass spectrometry (LC¬¬–MS/MS)) in the livers of patients diagnosed, according to the standard
clinical criteria, with hepatitis C, primary biliary cirrhosis, primary sclerosing hepatitis, alcoholic liver
disease (ALD), and autoimmune hepatitis. The stage of liver dysfunction was classified according to
Child–Pugh score. Downregulation of SLC16A1/MCT1 levels was observed in all liver pathology
states, significantly for ALD. The progression of liver dysfunction, from Child–Pugh class A to C,
involved the gradual decline in SLC16A1 mRNA and MCT1 protein abundance, reaching a clinically
significant decrease in class C livers. Reduced levels of MCT1 were associated with significant
intracellular lactate accumulation. The MCT1 transcript and protein did not demonstrate significant
correlations regardless of the liver pathology analyzed, as well as the disease stage, suggesting
posttranscriptional regulation, and several microRNAs were found as potential regulators of MCT1
abundance. MCT1 membrane immunolocalization without cytoplasmic retention was observed in all
studied liver pathologies. Overall, the study demonstrates that SLC16A1/MCT1 is involved in liver
pathology, especially in ALD
Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare disease which is often
caused by recurrent emboli. These are also frequently found in patients with myeloproliferative
diseases. While myeloproliferative diseases can be caused by gene defects, the genetic predisposition
to CTEPH is largely unexplored. Therefore, the objective of this study was to analyse these genes
and further genes involved in pulmonary hypertension in CTEPH patients. A systematic screening
was conducted for pathogenic variants using a gene panel based on next generation sequencing.
CTEPH was diagnosed according to current guidelines. In this study, out of 40 CTEPH patients
4 (10%) carried pathogenic variants. One patient had a nonsense variant (c.2071A>T p.Lys691*)
in the BMPR2 gene and three further patients carried the same pathogenic variant (missense variant,
c.1849G>T p.Val617Phe) in the Janus kinase 2 (JAK2) gene. The latter led to a myeloproliferative
disease in each patient. The prevalence of this JAK2 variant was significantly higher than expected
(p < 0.0001). CTEPH patients may have a genetic predisposition more often than previously thought.
The predisposition for myeloproliferative diseases could be an additional risk factor for CTEPH
development. Thus, clinical screening for myeloproliferative diseases and genetic testing may be
considered also for CTEPH patients.
Liver diseases are important causes of morbidity and mortality worldwide. The aim of
this study was to identify differentially expressed microRNAs (miRNAs), target genes, and key
pathways as innovative diagnostic biomarkers in liver patients with different pathology and functional
state. We determined, using RT-qPCR, the expression of 472 miRNAs in 125 explanted livers from
subjects with six different liver pathologies and from control livers. ANOVA was employed to
obtain differentially expressed miRNAs (DEMs), and miRDB (MicroRNA target prediction database)
was used to predict target genes. A miRNA–gene differential regulatory (MGDR) network was
constructed for each condition. Key miRNAs were detected using topological analysis. Enrichment
analysis for DEMs was performed using the Database for Annotation, Visualization, and Integrated
Discovery (DAVID). We identified important DEMs common and specific to the different patient
groups and disease progression stages. hsa-miR-1275 was universally downregulated regardless
the disease etiology and stage, while hsa-let-7a*, hsa-miR-195, hsa-miR-374, and hsa-miR-378 were
deregulated. The most significantly enriched pathways of target genes controlled by these miRNAs
comprise p53 tumor suppressor protein (TP53)-regulated metabolic genes, and those involved in
regulation of methyl-CpG-binding protein 2 (MECP2) expression, phosphatase and tensin homolog
(PTEN) messenger RNA (mRNA) translation and copper homeostasis. Our findings show a novel
panel of deregulated miRNAs in the liver tissue from patients with different liver pathologies. These
miRNAs hold potential as biomarkers for diagnosis and staging of liver diseases.
Hepatocellular carcinoma (HCC) is a deadly form of liver malignancy with limited treatment
options. Amplification and/or overexpression of c-MYC is one of the most frequent genetic events
in human HCC. The mammalian target of Rapamycin Complex 1 (mTORC1) is a major functional
axis regulating various aspects of cellular growth and metabolism. Recently, we demonstrated that
mTORC1 is necessary for c-Myc driven hepatocarcinogenesis as well as for HCC cell growth in vitro.
Among the pivotal downstream effectors of mTORC1, upregulation of Fatty Acid Synthase (FASN) and
its mediated de novo lipogenesis is a hallmark of human HCC. Here, we investigated the importance
of FASN on c-Myc-dependent hepatocarcinogenesis using in vitro and in vivo approaches. In mouse
and human HCC cells, we found that FASN suppression by either gene silencing or soluble inhibitors
more effectively suppressed proliferation and induced apoptosis in the presence of high c-MYC
expression. In c-Myc/Myeloid cell leukemia 1 (MCL1) mouse liver tumor lesions, FASN expression
was markedly upregulated. Most importantly, genetic ablation of Fasn profoundly delayed (without
abolishing) c-Myc/MCL1 induced HCC formation. Liver tumors developing in c-Myc/MCL1 mice
depleted of Fasn showed a reduction in proliferation and an increase in apoptosis when compared
with corresponding lesions from c-Myc/MCL1 mice with an intact Fasn gene. In human HCC samples,
a significant correlation between the levels of c-MYC transcriptional activity and the expression
of FASN mRNA was detected. Altogether, our study indicates that FASN is an important effector
downstream of mTORC1 in c-MYC induced HCC. Targeting FASN may be helpful for the treatment
of human HCC, at least in the tumor subset displaying c-MYC amplification or activation.
Despite continuous advances in therapy, malignant melanoma is still among the deadliest
types of cancer. At the same time, owing to its high plasticity and immunogenicity, melanoma is
regarded as a model tumor entity when testing new treatment approaches. Cold physical plasma is a
novel anticancer tool that utilizes a plethora of reactive oxygen species (ROS) being deposited on the
target cells and tissues. To test whether plasma treatment would enhance the toxicity of an established
antitumor therapy, ionizing radiation, we combined both physical treatment modalities targeting
B16F10 murine melanoma cell in vitro. Repeated rather than single radiotherapy, in combination
with gas plasma-introduced ROS, induced apoptosis and cell cycle arrest in an additive fashion. In
tendency, gas plasma treatment sensitized the cells to subsequent radiotherapy rather than the other
way around. This was concomitant with increased levels of TNFα, IL6, and GM-CSF in supernatants.
Murine JAWS dendritic cells cultured in these supernatants showed an increased expression of cell
surface activation markers, such as MHCII and CD83. For PD-L1 and PD-L2, increased expression
was observed. Our results are the first to suggest an additive therapeutic effect of gas plasma and
radiotherapy, and translational tumor models are needed to develop this concept further.
Background: Cold atmospheric plasma (CAP) is increasingly used in the field of oncology.
Many of the mechanisms of action of CAP, such as inhibiting proliferation, DNA breakage, or the
destruction of cell membrane integrity, have been investigated in many different types of tumors.
In this regard, data are available from both in vivo and in vitro studies. Not only the direct treatment
of a tumor but also the influence on its blood supply play a decisive role in the success of the therapy
and the patient’s further prognosis. Whether the CAP influences this process is unknown, and the
first indications in this regard are addressed in this study. Methods: Two different devices, kINPen
and MiniJet, were used as CAP sources. Human endothelial cell line HDMEC were treated directly
and indirectly with CAP, and growth kinetics were performed. To indicate apoptotic processes,
caspase-3/7 assay and TUNEL assay were used. The influence of CAP on cellular metabolism
was examined using the MTT and glucose assay. After CAP exposure, tube formation assay was
performed to examine the capillary tube formation abilities of HDMEC and their migration was
messured in separate assays. To investigate in a possible mutagenic effect of CAP treatment,
a hypoxanthine-guanine-phosphoribosyl-transferase assay with non malignant cell (CCL-93) line was
performed. Results: The direct CAP treatment of the HDMEC showed a robust growth-inhibiting
effect, but the indirect one did not. The MMT assay showed an apparent reduction in cell metabolism
in the first 24 h after CAP treatment, which appeared to normalize 48 h and 72 h after CAP application.
These results were also confirmed by the glucose assay. The caspase 3/7 assay and TUNEL assay
showed a significant increase in apoptotic processes in the HDMEC after CAP treatment. These results
were independent of the CAP device. Both the migration and tube formation of HDMEC were
significant inhibited after CAP-treatment. No malignant effects could be demonstrated by the CAP
treatment on a non-malignant cell line.
Niemann–Pick type C1 (NPC1) is a lysosomal storage disorder, inherited as an
autosomal-recessive trait. Mutations in the Npc1 gene result in malfunction of the NPC1 protein,
leading to an accumulation of unesterified cholesterol and glycosphingolipids. Beside visceral
symptoms like hepatosplenomegaly, severe neurological symptoms such as ataxia occur. Here,
we analyzed the sphingosine-1-phosphate (S1P)/S1P receptor (S1PR) axis in different brain regions
of Npc1−/− mice and evaluated specific effects of treatment with 2-hydroxypropyl-β-cyclodextrin
(HPβCD) together with the iminosugar miglustat. Using high-performance thin-layer chromatography
(HPTLC), mass spectrometry, quantitative real-time PCR (qRT-PCR) and western blot analyses, we
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Int. J. Mol. Sci. 2020, 21, 4502 2 of 31
studied lipid metabolism in an NPC1 mouse model and human skin fibroblasts. Lipid analyses
showed disrupted S1P metabolism in Npc1−/− mice in all brain regions, together with distinct changes
in S1pr3/S1PR3 and S1pr5/S1PR5 expression. Brains of Npc1−/− mice showed only weak treatment
effects. However, side effects of the treatment were observed in Npc1+/+ mice. The S1P/S1PR axis
seems to be involved in NPC1 pathology, showing only weak treatment effects in mouse brain. S1pr
expression appears to be affected in human fibroblasts, induced pluripotent stem cells (iPSCs)-derived
neural progenitor and neuronal differentiated cells. Nevertheless, treatment-induced side effects
make examination of further treatment strategies indispensable
Molecular Mechanisms of Bortezomib Action: Novel Evidence for the miRNA−mRNA Interaction Involvement
(2020)
Bortezomib is an anti-tumor agent, which inhibits 26S proteasome degrading ubiquitinated
proteins. While apoptotic transcription-associated activation in response to bortezomib has been
suggested, mechanisms related to its influence on post-transcriptional gene silencing mediated
regulation by non-coding RNAs remain not fully elucidated. In the present study, we examined
changes in global gene and miRNA expression and analyzed the identified miRNA–mRNA interactions
after bortezomib exposure in human neuroblastoma cells to define pathways affected by this agent in
this type of cells. Cell viability assays were performed to assess cytotoxicity of bortezomib. Global gene
and miRNA expression profiles of neuroblastoma cells after 24-h incubation with bortezomib were
determined using genome-wide RNA and miRNA microarray technology. Obtained results were
then confirmed by qRT-PCR and Western blot. Further bioinformatical analysis was performed
to identify affected biological processes and pathways. In total, 719 genes and 28 miRNAs were
downregulated, and 319 genes and 61 miRNAs were upregulated in neuroblastoma cells treated with
bortezomib. Possible interactions between dysregulated miRNA/mRNA, which could be linked to
bortezomib-induced neurotoxicity, affect neurogenesis, cellular calcium transport, and neuron death.
Bortezomib might exert toxic effects on neuroblastoma cells and regulate miRNA–mRNA interactions
influencing vital cellular functions. Further studies on the role of specific miRNA–mRNA interactions
are needed to elucidate mechanisms of bortezomib action.
Injection of intense low-energy reactor-based positron beams into a supported magnetic dipole trap
(2020)
Abstract
An increased low-energy positron flux is obtained from the reactor based NEPOMUC source when using its primary beam at energies as low as 20 eV. First experiments with this beam in a supported magnetic dipole trap resulted in the maximum current of injected positrons to date. According to single-particle simulations, remaining limitations in the injection efficiency, observed in the experiment, can be attributed to the spatial spread of the beam. In the first trapping measurements with this beam, top-down asymmetries in the electrostatic trapping potential are found to be detrimental to confinement.
AbstractFluctuations of electron cyclotron emission (ECE) signals are analyzed for differently heated Wendelstein 7-X plasmas. The fluctuations appear to travel predominantly on flux surfaces and are used as ‘tracers’ in multivariate time series. Different statistical techniques are assessed to reveal the coupling and information entropy-based coupling analysis are conducted. All these techniques provide evidence that the fluctuation analysis allows one to check the consistency of magneto-hydrodynamic (MHD) equilibrium calculations. Expanding the suite of techniques applied in fusion data analysis, partial mutual information (PMI) analysis is introduced. PMI generalizes traditional partial correlation (Frenzel and Pompe Phys. Rev. Lett.
99 204101) and also Schreiber’s transfer entropy (Schreiber 2000 Phys. Rev. Lett.
85 461). The main additional capability of PMI is to allow one to discount for specific spurious data. Since PMI analysis allows one to study the effect of common drivers, the influence of the electron cyclotron resonance heating on the mutual dependencies of simultaneous ECE measurements was assessed. Additionally, MHD mode activity was found to be coupled in a limited volume in the plasma core for different plasmas. The study reveals an experimental test for equilibrium calculations and ECE radiation transport.
AbstractUsing measurements from high resolution monitoring of radial tree-growth we present new data of the growth reactions of four widespread broadleaved tree-species to the combined European drought years 2018 and 2019. We can show that, in contrast to field crops, trees could make better use of the winter soil moisture storage in 2018 which buffered them from severe drought stress and growth depressions in this year. Nevertheless, legacy effects of the 2018 drought accompanied by sustained low soil moisture conditions (missing recharge in winter) and again higher than average temperatures and low precipitation in spring/summer 2019 have resulted in severe growth reductions for all studied tree-species in this year. This highlights the pivotal role of soil water recharge in winter. Although short term resistance to hot summers can be high if sufficient winter precipitations buffers forest stands from drought damage, legacy effects will strongly impact tree growth in subsequent years if the drought persists. The two years 2018 and 2019 are extreme with regard to historical instrumental data but, according to regional climate models, resemble rather normal conditions of the climate in the second half of the 21st century. Therefore the observed strongly reduced growth rates can provide an outlook on future forest growth potential in northern Central Europe and beyond.
Disregarded Measurement Uncertainty Contributions and Their Magnitude in Measuring Plasma Glucose
(2020)
Background:
Each measurement is subject to measurement uncertainty (MU). Consequently, each measurement of plasma glucose concentration used for diagnosis and monitoring of diabetes mellitus (DM) is affected. Although concepts and methods of MU are well established in many fields of science and technology, they are presently only incompletely implemented by medical laboratories, neglecting MU of target values of internal quality control (IQC) materials.
Methods:
An empirical and practical approach for the estimation of MU based on the analysis of routine IQC using control samples with assigned target values is presented. Its feasibility is demonstrated exemplarily by analyzing IQC data from one year obtained for glucose employing the hexokinase method with IQC of two different concentrations.
Results:
Combined relative extended (k = 2) MU comprising bias, coefficient of variation (CV), and MU of the target values assigned to control materials were about 9% with a lower (~ 56 mg/dL; ~3.1 mmol/L) and 8% with a higher (~ 346 mg/dL; ~19.2 mmol/L) concentration sample, analyzing IQC of one year from three different devices.
Conclusions:
Estimation of MU in this study is quite reliable due to the large number of IQC data from one year. The MU of the target values of the commercial control material in this study was considerably larger than other MU contributions, ie, standard deviation and bias. In the future, the contribution of MU of commercial IQC should be addressed more carefully and technologies to measure glucose should be geared toward smaller MU possible, as needed, especially for glucose concentration measurements in diagnosis and management of DM.
Plasma medical oncology: Immunological interpretation in head and neck squamous cell carcinoma
(2020)
Over the past several years, various important articles focusing on cancer therapy
approaches in head and neck squamous cell carcinomas (HNSCCs) using cold
atmospheric plasma (CAP) have been published (SEMMLER et al. 2020 [53],
METELMANN et al. 2018 [44], KEIDAR et al. 2011 [33]). This doctoral thesis presents
selected results from a prospective observational clinical study in CAP therapy of
palliative HNSCC patients, carried out at the Department of Oral and Maxillofacial
Surgery/Plastic Surgery of the Greifswald University Medicine. For oral and
maxillofacial surgeons, ulcerated surfaces of locally advanced head and neck squamous
cell carcinomas (UICC IV) offer a challenging treatment assignment with microbial
contamination and tumour progression. The clinical attempt appears to eradicate
microbial contamination and to initiate tumour regression. This doctoral thesis will
describe the processes of human tumour biology and tumour immunology in HNSCCs
and the extent of present knowledge concerning plasma medical oncology as an
anticancer modality. In the introduction of the doctoral thesis clinical results of plasma
therapy in locally advanced HNSCCs (UICC IV) are set out. This mainly includes the
investigation of a therapeutic concept, the treatment phases, the tumour size development
and the morphological changes of the infected tumour surface following cold atmospheric
plasma therapy. In the main part, a detailed immunological interpretation is proposed on
the basis of present preclinical and clinical immunological knowledge. Finally,
unexplored questions in plasma medical oncology are highlighted. This is highly
significant for future plasma research and clinical anticancer therapy.
For an ORCA/EFCD consensus, this review systematically assessed available evidence regarding interventions performed and materials used to manage dentin carious lesions in primary teeth. A search for systematic reviews (SRs) and randomized clinical trials (RCTs) with a follow-up of at least 12 months after intervention was performed in PubMed, LILACS, BBO, and the Cochrane Library. The risk of bias tool from the Cochrane Collaboration and the PRISMA Statement were used for assessment of the included studies. From 101 screened articles, 2 SRs and 5 RCTs, which assessed the effectiveness of interventions in terms of pulp vitality and success of restoration, and 10 SRs and 1 RCT assessing the success of restorative materials were included. For treatments involving no carious tissue removal, the Hall technique showed lower treatment failure for approximal carious lesions compared to complete caries removal (CCR) and filling. For the treatment of deep carious lesions, techniques involving selective caries removal (SCR) showed a reduction in the incidence of pulp exposure. However, the benefit of SCR over CCR in terms of pulp symptoms or restoration success/failure was not confirmed. Regarding restorative materials, preformed metal crowns (PMCs) used to restore multisurface lesions showed the highest success rates compared to other restorative materials (amalgam, composite resin, glass ionomer cement, and compomer), and in the long term (12–48 months) these were also less likely to fail. There is limited evidence supporting the use of PMCs to restore carious lesions with single cavities. Among nonrestorative options, silver diammine fluoride was significantly more effective in arresting caries than other treatments for treating active carious lesions of different depths. Considerable heterogeneity and bias risk were observed in the included studies. Although heterogeneity observed among the studies was substantial, the trends were similar. In conclusion, less invasive caries approaches involving selective or no caries removal seem advantageous in comparison to CCR for patients presenting with vital, symptomless, carious dentin lesions in primary teeth. There is evidence in favor of PMCs for restoring multisurface carious lesions in primary molars.
Aim: To provide recommendations for dental clinicians for the management of dental caries in older adults with special emphasis on root caries lesions. Methods: A consensus workshop followed by a Delphi consensus process were conducted with an expert panel nominated by ORCA, EFCD, and DGZ boards. Based on a systematic review of the literature, as well as non-systematic literature search, recommendations for clinicians were developed and consented in a two-stage Delphi process. Results: Demographic and epidemiologic changes will significantly increase the need of management of older adults and root caries in the future. Ageing is associated with a decline of intrinsic capacities and an increased risk of general diseases. As oral and systemic health are linked, bidirectional consequences of diseases and interventions need to be considered. Caries prevention and treatment in older adults must respond to the patient’s individual abilities for self-care and cooperation and often involves the support of caregivers. Systemic interventions may involve dietary counselling, oral hygiene instruction, the use of fluoridated toothpastes, and the stimulation of salivary flow. Local interventions to manage root lesions may comprise local biofilm control, application of highly fluoridated toothpastes or varnishes as well as antimicrobial agents. Restorative treatment is often compromised by the accessibility of such root caries lesions as well as the ability of the senior patient to cooperate. If optimum restorative treatment is impossible or inappropriate, long-term stabilization, e.g., by using glass-ionomer cements, and palliative treatments that aim to maintain oral function as long and as well as possible may be the treatment of choice for the individual.
Background: This randomized controlled trial investigated if uni- and bihemispheric transcranial direct current stimulation (tDCS) of the motor cortex can enhance the effects of visuo-motor grip force tracking task training and transfer to clinical assessments of upper extremity motor function.
Methods: In a randomized, double-blind, sham-controlled trial, 40 chronic stroke patients underwent 5 days of visuo-motor grip force tracking task training of the paretic hand with either unilateral or bilateral (N = 15/group) or placebo tDCS (N = 10). Immediate and long-term (3 months) effects on training outcome and motor recovery (Upper Extremity Fugl-Meyer, UE-FM, Wolf Motor Function Test, and WMFT) were investigated.
Results: Trained task performance significantly improved independently of tDCS in a curvilinear fashion. In the anodal stimulation group UE-FM scores were higher than in the sham group at day 5 (adjusted mean difference: 2.6, 95%CI: 0.6–4.5, p = 0.010) and at 3 months follow up (adjusted mean difference: 2.8, 95%CI: 0.8–4.7, p = 0.006). Neither training alone, nor the combination of training and tDCS improved WMFT performance.
Conclusions: Visuo-motor grip force tracking task training can facilitate recovery of upper extremity function. Only minimal add-on effects of anodal but not dual tDCS were observed.
Clinical Trial Registration: https://clinicaltrials.gov/ct2/results?recrs=&cond=&term=NCT01969097&cntry=&state=&city=&dist=, identifier: NCT01969097, retrospectively registered on 25/10/2013.
One of the great challenges the world faces in terms of health care is the increasing number of
people living with neuro-disabilities that affect their ability to participate in societal activities.
Various neurological conditions such as stroke, multiple sclerosis, or Parkinson’s disease, to name
just a few, change cognitive, sensory, or motor capacities, alter the emotional well-being of those
affected, and lead to disability in their everyday lives.
Over the last few decades, aging populations and reduced mortality in many regions of the world
have increased the number of people living with neuro-disabilities considerably, an effect that is
still ongoing (1): for 2017, the worldwide prevalence of stroke (thousands) has been estimated to
be as high as 104178.7 (95% confidence interval, 95% CI 98454.0–110125.0), and years lived with
disabilities (YLD) (counts in thousands) caused by stroke were reported to amount to 18695.4
(95% CI 13,574–23686.9). The stroke-related increase in YLD (percentage change in counts)
was 40% (95% CI 38.4–41.4) from 1990 to 2007 and another 43.6% (39.6–47.8) during only 10
years from 2007 to 2017. The numbers are similarly impressive for other neurological disorders
(i.e., dementias, Parkinson’s disease, epilepsy, multiple sclerosis, motor neuron disease, headache
disorders, and others). Taken together, their worldwide prevalence (in thousands) in 2017 was
3121435.3 (95% CI 2951124.5–3316268.0), while YLD (thousands) in 2017 were 3121435.3 (95%
CI 2951124.5–3316268.0), with an increase in YLD by 35.1% (95% CI 31.9–38.1) from 1990 to 2007
and by a further 17.8% (95% CI 15.8–20.2) from 2007 to 2017.
These numbers not only demonstrate the huge global burden of disease and prevailing
neuro-disabilities, but they indicate a considerable increase in the number of people living with
neuro-disabilities with an accelerating dynamic over time (for stroke).
Indium-cluster anions In−nare probed for delayed dissociation by photoexcitation in a multi-reflection time-of-flight device. In addition to prompt dissociation with below-microsecond decay constants, we observe reactionson timescales of several tens to hundreds of microseconds. These time-resolved decay-rate measurements reveala power-law behavior in time which can be traced back to the clusters’ energy distribution due to their productionby laser ablation in high vacuum. Modeling energy distributions from such a production allows us to connect thecluster-specific dissociation energy with the ensemble temperature through experimentally determined power-law exponents.
Abstract
Background and purpose:Diagnosing a patient with headache as a migraineur is critical for state-of-the-art migrainemanagement. Screening tools are imperative means to improve the diagnostic yield in the primary care settings andspecialized clinics. This study aims to translate and assess the diagnostic accuracy of a German version of theID Migraine™as a widely used and efficient screening instrument.
Methods:
The Functional Assessment of Chronic Illness Therapy translation methodology was used to translate theoriginal three-itemID Migraine™, including a fourth question for aura, from the English language into the German language.Diagnostic accuracy of the GermanID Migraine™and predictors of false screening results were assessed among patientspresenting to a headache outpatient clinic of a tertiary care center in Germany over a 6-month period.
Results:
The translation procedure yielded a harmonized GermanID Migraine™and its diagnostic accuracy was assessedin 105 patients (80 female, 46.5+17.2 years of age), including 79 patients (75.2%) with migraine. The three-item GermanID Migraine™provides a sensitivity of 99%, specificity of 68%, and positive and negative predictive values of 90% and 95%,respectively, using a cutoff of2. Positive and negative predictive values in a general headache population are estimated tobe 74% and 98%, respectively. The aura question identified 18 out of 20 migraineurs with aura.
Conclusions:
The GermanID Migraine™is an accurate screening tool for migraine even in a challenging population of aspecialized outpatient clinic. Its diagnostic accuracy indicates a potential utility for screening in primary health care.
This paper presents continuous, high resolution fossil pollen and microcharcoal records from Bo Langvlei, a lake in the Wilderness Embayment on South Africa’s southern Cape coast. Spanning the past ~1300 years and encompassing the Medieval Climate Anomaly (MCA; c. AD 950–1250) and the Little Ice Age (LIA; c. AD 1300–1850), these records provide a rare southern African perspective on past temperature, moisture and vegetation change during these much debated periods of the recent geological past. Considered together with other records from the Wilderness Embayment, we conclude that conditions in the region during the MCA chronozone were – in the context of the last 1300 years – likely relatively dry (reduced levels of Afrotemperate forest pollen) and perhaps slightly cooler (increased percentages of Stoebe-type pollen) than present. The most significant phase of forest expansion, and more humid conditions, occurred during the transition between the MCA and the most prominent cooling phase of the LIA. The LIA is clearly identified at this locality as a period of cool, dry conditions between c. AD 1600 and 1850. The mechanisms driving the changes observed in the Bo Langvlei pollen record appear to be generally linked to changes in temperature, and changes in the influence of tropical circulation systems. During warmer periods, moisture availability was higher at Bo Langvlei, and rainfall was perhaps less seasonal. During colder periods, precipitation resulting from tropical disturbances was more restricted, resulting in drier conditions. While increased precipitation has been reported during the LIA from Verlorenvlei in the Western Cape as a result of an equatorward displacement of the westerly storm-track at this time, the opposing response at Bo Langvlei suggests that any increased influence of westerlies was insufficient to compensate for the concurrent reduction in tropical/local rainfall in the region.
Thiamine is substrate of the hepatic uptake transporter organic cation transporter 1 (OCT1), and pathological lipid metabolism was associated with OCT1‐dependent thiamine transport. However, it is unknown whether clinical pharmacokinetics of thiamine is modulated by OCT1 genotype. We analyzed thiamine transport in vitro, thiamine blood concentrations after high‐dose and low‐dose (nutritional) intake, and heritability of thiamine and thiamine‐phosphate blood concentrations. The variant OCT1*2 had reduced and OCT1*3 to OCT1*6 had deficient thiamine uptake activity. However, pharmacokinetics of thiamine did not differ depending on OCT1 genotype. Further studies in primary human hepatocytes indicated that several cation transporters, including OCT1, OCT3, and THTR‐2, contribute to hepatic uptake of thiamine. As much as 54% of the variation in thiamine and 75% in variation of thiamine monophosphate plasma concentrations was determined by heritable factors. Apparently, thiamine is not useful as a probe drug for OCT1 activity, but the high heritability, particularly of thiamine monophosphate, may stimulate further genomic research.
The benefit of regular physical activity and exercise training for the prevention of cardiovascular and metabolic diseases is undisputed. Many molecular mechanisms mediating exercise effects have been deciphered. Personalised exercise prescription can help patients in achieving their individual greatest benefit from an exercise-based cardiovascular rehabilitation programme. Yet, we still struggle to provide truly personalised exercise prescriptions to our patients. In this position paper, we address novel basic and translational research concepts that can help us understand the principles underlying the inter-individual differences in the response to exercise, and identify early on who would most likely benefit from which exercise intervention. This includes hereditary, non-hereditary and sex-specific concepts. Recent insights have helped us to take on a more holistic view, integrating exercise-mediated molecular mechanisms with those influenced by metabolism and immunity. Unfortunately, while the outline is recognisable, many details are still lacking to turn the understanding of a concept into a roadmap ready to be used in clinical routine. This position paper therefore also investigates perspectives on how the advent of ‘big data’ and the use of animal models could help unravel inter-individual responses to exercise parameters and thus influence hypothesis-building for translational research in exercise-based cardiovascular rehabilitation.
Changes in the environment will alter the growth rate of trees and forests. Different
disciplines assess such growth rates differently, for example, with tree-ring width
data, forest inventories or with carbon-flux data from eddy covariance towers. Such
data is used to quantify forests biomass increment, forest’s carbon sequestration
or to reconstruct environmental variables before instrumental records. However, raw
measurement data is typically not considered to be representative for the average
growth rate of trees or forests. Depending on the research question, the effects of
certain environmental variables or effects of tree and forest structure have to be
removed first. It can be challenging to define and quantify a growth trend that can
answer a specific research question because trees and forests grow and respond
to environmental change in multiple ways simultaneously, for example, with altered
radial increment, height growth, and stand density. Further challenges pose time-lagged
feedback loops, for example, between height and radial increment or between stand
density and radial increment. Generally, different environments will lead to different
tree and forest structures, but because of tree’s longevity this adaptation to the new
environment will take decades or even centuries. Consequently, there can be an offset
between the present forest structure and what we term the potential natural forest (PNF):
Similar to the potential natural vegetation (PNV), the PNF represents that forest that
would develop under the current environmental conditions in the absence of human
intervention. Because growth rates are affected by the tree and forest structure, growthtrend estimates will differ between the present and the potential forest. Consequently, if
the legacy effects of the past are not of interest, the PNF is the theoretical baseline to
correct and estimate growth trends
Background: Granulocytes and monocytes are the first cells to invade the brain post stroke and are also being discussed as important cells in early neuroinflammation after seizures. We aimed at understanding disease specific and common pathways of brain-immune-endocrine-interactions and compared immune alterations induced by stroke and seizures. Therefore, we compared granulocytic and monocytic subtypes between diseases and investigated inflammatory mediators. We additionally investigated if seizure type determines immunologic alterations.
Material and Methods: We included 31 patients with acute seizures, 17 with acute stroke and two control cohorts. Immune cells were characterized by flow cytometry from blood samples obtained on admission to the hospital and the following morning. (i) Monocytes subpopulations were defined as classical (CD14++CD16−), (ii) intermediate (CD14++CD16+), and (iii) non-classical monocytes (CD14dimCD16+), while granulocyte subsets were characterized as (i) “classical granulocytes” (CD16++CD62L+), (ii) pro-inflammatory (CD16dimCD62L+), and (iii) anti-inflammatory granulocytes (CD16++CD62L−). Stroke patient's blood was additionally drawn on days 3 and 5. Cerebrospinal fluid mitochondrial DNA was quantified by real-time PCR. Plasma High-Mobility-Group-Protein-B1, metanephrine, and normetanephrine were measured by ELISA.
Results: HLA-DR expression on monocytes and their subpopulations (classical, intermediate, and non-classical monocytes) was reduced after stroke or seizures. Expression of CD32 was increased on monocytes and subtypes in epilepsy patients, partly similar to stroke. CD32 and CD11b regulation on granulocytes and subpopulations (classical, anti-inflammatory, pro-inflammatory granulocytes) was more pronounced after stroke compared to seizures. On admission, normetanephrine was upregulated in seizures, arguing for the sympathetic nervous system as inducer of immune alterations similar to stroke. Compared to partial seizures, immunologic changes were more pronounced in generalized tonic-clonic seizures.
Conclusion: Seizures lead to immune alterations within the immediate postictal period similar but not identical to stroke. The type of seizures determines the extent of immune alterations.
Aims
Averaged measurements, but not the progression based on multiple assessments of carotid intima-media thickness, (cIMT) are predictive of cardiovascular disease (CVD) events in individuals. Whether this is true for conventional risk factors is unclear.
Methods and results
An individual participant meta-analysis was used to associate the annualised progression of systolic blood pressure, total cholesterol, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol with future cardiovascular disease risk in 13 prospective cohort studies of the PROG-IMT collaboration (n = 34,072). Follow-up data included information on a combined cardiovascular disease endpoint of myocardial infarction, stroke, or vascular death. In secondary analyses, annualised progression was replaced with average. Log hazard ratios per standard deviation difference were pooled across studies by a random effects meta-analysis. In primary analysis, the annualised progression of total cholesterol was marginally related to a higher cardiovascular disease risk (hazard ratio (HR) 1.04, 95% confidence interval (CI) 1.00 to 1.07). The annualised progression of systolic blood pressure, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol was not associated with future cardiovascular disease risk. In secondary analysis, average systolic blood pressure (HR 1.20 95% CI 1.11 to 1.29) and low-density lipoprotein cholesterol (HR 1.09, 95% CI 1.02 to 1.16) were related to a greater, while high-density lipoprotein cholesterol (HR 0.92, 95% CI 0.88 to 0.97) was related to a lower risk of future cardiovascular disease events.
Conclusion
Averaged measurements of systolic blood pressure, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol displayed significant linear relationships with the risk of future cardiovascular disease events. However, there was no clear association between the annualised progression of these conventional risk factors in individuals with the risk of future clinical endpoints.
Objectives
Medical compression therapy is used for non-invasive treatment of venous and lymphatic diseases. Medical compression therapy-associated adverse events and contraindications have been reported, although some contraindications are theoretically based. This consensus statement provides recommendations on medical compression therapy risks and contraindications.
Methods
A systematic literature search of medical compression therapy publications reporting adverse events up until November 2017 was performed. A consensus panel comprising 15 international experts critically reviewed the publications and formulated the recommendations.
Results
Sixty-two publications reporting medical compression therapy adverse events were identified. The consensus panel issued 21 recommendations on medical compression therapy contraindications and adverse event risk mitigation, in addition to reviewing medical compression therapy use in borderline indications. The most frequently reported non-severe medical compression therapy-associated adverse events included skin irritation, discomfort and pain. Very rare but severe adverse events, including soft tissue and nerve injury, were also identified.
Conclusion
This consensus statement summarises published medical compression therapy-associated adverse events and contraindications, and provides guidance on medical compression therapy. Severe medical compression therapy-associated adverse events are very rarely encountered if compression is used correctly and contraindications are considered.
Long-chain aliphatic amines such as (S,Z)-hepta- dec-9-en-7-amine and 9-aminoheptadecane were synthesized from ricinoleic acid and oleic acid, respectively, by whole-cell cascade reactions using the combination of an alcohol dehydrogenase (ADH) from Micrococcus luteus, an engi- neered amine transaminase from Vibrio fluvialis (Vf-ATA), and a photoactivated decarboxylase from Chlorella variabilis NC64A (Cv-FAP) in a one-pot process. In addition, long chain aliphatic esters such as 10-(heptanoyloxy)dec-8-ene and octyl- nonanoate were prepared from ricinoleic acid and oleic acid, respectively, by using the combination of the ADH, a Baeyer– Villiger monooxygenase variant from Pseudomonas putida KT2440, and the Cv-FAP. The target compounds were produced at rates of up to 37 U g1 dry cells with conversions up to 90 %. Therefore, this study contributes to the preparation of industrially relevant long-chain aliphatic chiral amines and esters from renewable fatty acid resources.
Fehlfunktionen oder der Verlust von Podozyten führen zu Glomerulopathien, welche in ca.
90 % der Fälle die Ursache für eine Niereninsuffizienz ist. Der Verlust resultiert aus einer
fehlerhaften Haftung an der glomerulären Basalmembran unter anderem durch eine erhöhten mechanischen Beanspruchung, zum Beispiel bei erhöhtem Blutdruck. Die Erforschung
des Zusammenspieles aus dem Aktin-Zytoskelett und den Fokaladhäsionen verspricht hier
einen Erkenntnisgewinn über die Mechanismen der Adhäsion und der Resistenz gegen äußere Kräfte.
Die Fluoreszenzmikroskopie erlaubt eine detailreiche Abbildung dieser Strukturen. Die anschließende Beschreibung oder Quantifizierung ist allerdings aufgrund der ungeordneten
und statistisch verteilten Formen und Anordnungen der Filamente und Fokaladhäsionen
erschwert. Moderne computergestützte Bildauswertungsmethoden stellen hier eine Ausweg
dar, weil sie eine große Anzahl von Zellen mit einer beliebigen Detailgenauigkeit nach festen
Regeln untersuchen können. Das Ziel dieser Arbeit ist die Entwicklung und Testung von
solchen Methoden zur quantitativen Bildauswertung für die Merkmalsextraktion von Fokaladhäsionen, des Aktin-Zytoskelettes und der Zellform bei Podozyten.
Damit einzelne Zellen verglichen werden können, müssen die Zellgrenzen erkannt werden.
Dies ist erschwert durch sich überlappende Zellen und die selektive Bildinformation von
Fluoreszenz-Bildern.
Es konnten zwei Methoden etabliert werden. Eine hat einen hohen Automatisierungsrad, basiert auf Voronoi-Diagrammen und ist geeignet zur Auswertung von vielen Zellen. Die andere
ist semi-automatisiert und erreicht eine hohe Genauigkeit beim Erkennen der Zellgrenzen.
Hiernach werden die Zellen durch Bestimmung gängiger Formfaktoren charakterisiert und
insbesondere Filopodien in ihrer Anzahl und Größe analysiert.
Der Algorithmus zur Analyse des Aktin-Zytoskelettes fußt auf einer neuen iterativen Programmstruktur. Diese ermöglicht das Beobachten von pathologischen Veränderungen des
Aktin-Zytoskelettes ohne die Parameter neu zu justieren. Es wird der vollständige Datensatz aus Länge, Breite und Orientierung der beliebig gekrümmten Aktin-Fasern extrahiert.
Das präsentierte Programm zur Auswertung der Fokaladhäsionen wurde für eine hohe Sensitivität und Spezifität optimiert. Es werden die wichtigen Merkmale Anzahl, Fläche und
Orientierung für alle Fokaladhäsionen bestimmt. Die Orientierung der Fokaladhäsionen wird
erstmals sehr robust durch die Bestimmung des Gradientenfeldes der Fluoreszenz-Intensität
berechnet.
Die Programme wurden mit Matlab implementiert und jeweils mit einer eigenständigen
Programmoberfläche ausgestattet. Außerdem wurde auf eine intuitive Bedienbarkeit und
Anwenderfreundlichkeit geachtet.
Eine erste Anwendung fanden die etablierten Methoden bei der Erforschung der Bedeutung
von Palladin und Fascin-1 auf das Zytoskelett. Bei Palladin-Knockdown-Podozyten konnte
eine Abnahme der Aktinfilamente und eine höhere Vulnerabilität auf Toxine gefunden werden. Ein Fascin-1-Knockdown bewirkt eine Abnahme der Fokaladhäsionen in ihrer Anzahl
und Fläche.
Weitere Auswirkungen von intrinsischen oder extrinsischen Veränderungen auf das Zytoskelett und die Zellform können mit den hier etablierten Methoden in Zukunft untersucht
werden. Tiefere Einblicke in die Funktionsweise des Zytoskelettes sind auch durch die Korrelation dieser neu zugänglichen Merkmale untereinander und ggf. durch ein Abgleich mit
Modellen zur Simulation der Dynamik des Aktin-Zytoskelettes erwartbar.
Trotz zahlreicher Fortschritte in der Reproduktionsmedizin bleibt die ungewollte Kinderlosigkeit weiterhin ein nur teilweise verstandenes und behandelbares Problem. Unter habituellen Aborten, also drei oder mehr Fehlgeburten in Folge, leiden weltweit
etwa 1% aller Paare. In der Behandlung ungewollter Kinderlosigkeit auch unbekannter Ursache nehmen Heparine mittlerweile eine wichtige Rolle ein, auch wenn die Wirkungsweise zur Verbesserung des Schwangerschaftserfolgs oder der Verhinderung von Schwangerschaftskomplikationen nicht endgültig geklärt ist. Wichtige Aspekte sind dabei nicht nur die antikoagulativen Eigenschaften dieser Medikamente, sondern auch immunmodulatorische Effekte, welche in dieser Arbeit anknüpfend an andere Arbeiten unserer Arbeitsgruppe weiter untersucht wurden. Das Immunsystem spielt eine herausragende Rolle bei Entstehung und Erhalt von Schwangerschaft.
Es ist bekannt, dass sich während der Schwangerschaft das Gleichgewicht zwischen TH1- und TH2-Zytokinen in Richtung der TH2-Zytokine verschiebt, wodurch die für den Feten potenziell schädlichen Effekte durch die TH1-Immunantwort abgeschwächt werden. Bei Frauen mit ungewollter Kinderlosigkeit scheint das Verhältnis wiederum in Richtung der TH1-Zytokine verschoben zu sein. Eine Einflussnahme auf diese Zytokinverschiebung könnte also hilfreich sein.
In der hier vorgelegten Arbeit wurde ein in-vitro-Modell endometrialer Stromazellen
(ESC) in Zellkultur verwendet. Es wurde dabei mittels ELISA und PCR untersucht,
wie die beiden wichtigen Modulatoren der Chemokinproduktion TNF-alpha (ein proinflammatorisches TH1-Zytokin) und Thrombin (wichtiger Partner von Heparin beim Eingriff in die Gerinnungskaskade) die Chemokinproduktion von ESC auf RNA- und Proteinebene beeinflussen und wie unfraktioniertes Heparin (UFH), niedermolekulare Heparine (LMWH) und Heparin-ähnliche Moleküle diese wiederum verändern können.
Untersucht wurden dabei die Chemokine GRO-alpha, Ena-78, IL-8, MCP-1 und RANTES.
In dieser Arbeit wird gezeigt, dass UFH die von TNF-alpha hervorgerufene Steigerung der Produktion von IL-8 und RANTES dosisabhängig beeinflusst. Mithilfe des Einsatzes des NFkappaB-Inhibitors Parthenolid kann zudem dargestellt werden, dass der TNF-alpha- und vermutlich auch der Heparineffekt über den Signalweg des Transkriptionsfaktors NFkappaB vermittelt wird. Mittels der Heparin-ähnlichen Moleküle Dextransulfat, Danaparoid und ODSH versuchen wir anschließend darzustellen, welche Moleküleigenschaften Heparins für die Einflussnahme auf die von TNF-alpha verursachte Chemokinexpression und -sekretion von GRO-alpha, IL-8 und RANTES verantwortlich sind.
Im zweiten Teil der Arbeit wird zunächst gezeigt, dass Thrombin die Sekretion von
GRO-alpha, IL-8 und MCP-1 durch ESC erhöht, während es auf die RANTES Expression anders als TNF-alpha keinen Einfluss hat. UFH ist in der Lage diese gesteigerte Chemokinsekretion von IL-8 und MCP-1 zu verringern. Außerdem hemmen nicht nur UFH, sondern auch LMWHs die Thrombin-induzierte Hochregulation von IL-8 und MCP-1 auf mRNA- und Proteinebene. Thrombin scheint für seine Einflussnahme auf die Chemokinproduktion dabei den MAPK-Signalweg zu nutzen, wie mittels des MAPK-Inhibitors PD98059 dargestellt wird. Diese Arbeit zeigt somit wie Heparine ihre immunmodulatorischen Effekte auf die Chemokinproduktion endometrialer Stromazellen beim Vorliegen eines proinflammatorischen Milieus ausüben. Dadurch wird ein Beitrag geleistet, um die Wirkungsweise von Heparinen beim Einsatz ungewollter Kinderlosigkeit besser zu verstehen und es wird nochmals das Potential dieser Medikamente bei der Anwendung in diesem Bereich unterstrichen. Es sind allerdings weitere Untersuchungen am Tiermodell oder im Rahmen klinischer Studien notwendig, um diese am in-vitro-Modell gewonnenen Erkenntnisse auf ein in-vivo Modell zu übertragen und somit profunderes Wissen für die klinische Anwendung zu gewinnen.
Einleitung: Der Gesetzgeber hat die 2001 von der Weltgesundheitsorganisation (WHO) veröffentlichte Internationale Klassifikation der Funktionsfähigkeit, Behinderung und Gesundheit (ICF) als Grundlage der Rehabilitation in Deutschland im Sozialgesetzbuch IX verankert. Anders als bisherige Klassifikationsmodelle, die einen linearen Zusammenhang zwischen Beeinträchtigung der Funktion und Behinderung annehmen, basiert die ICF auf einem bio-psycho-sozialen Verständnis von Gesundheit und Krankheit. Das ICF-Modell sieht Beeinträchtigungen der funktionalen Gesundheit einer Person als das Ergebnis der negativen Wechselwirkung zwischen den Gesundheitsproblemen sowie den personbezogenen und umweltbezogenen Kontextfaktoren der Person. Ziel einer Rehabilitationsmaßnahme ist die Förderung der gleichberechtigten Teilhabe am Leben der Gemeinschaft und die Selbstbestimmung von behinderten und von Behinderung bedrohten Menschen. Auf Basis der ICF ist es also Aufgabe der deutschen Rehabilitationseinrichtungen, die Kontextfaktoren mit zu berücksichtigen, um den Rehabilitanden eine bestmögliche (Re-)Integration in die Gesellschaft und Teilhabe am gesellschaftlichen Leben zu ermöglichen. Besonders gefordert sind hierbei ambulante Rehabilitationseinrichtungen, die nach der Akutbehandlung bzw. Frührehabilitation ansetzen, in einer Phase, in der der Rehabilitand bereits in sein gewohntes häusliches Umfeld zurückgekehrt ist, was eine Mitberücksichtigung von Kontextfaktoren in besonderer Weise ermöglicht. Bislang gibt es nur wenige Studien, die explizit das Konstrukt Teilhabe als Zielvariable im Rehabilitationsverlauf untersuchen und beeinflussende Kontextfaktoren mit in den Blick nehmen.
Material und Methoden: In vier empirischen Studien wurden Teilhabeverläufe und beeinflussende Kontextfaktoren in der ambulanten Neurorehabilitation untersucht. Da Depressivität den Behandlungserfolg im Kontext einer ambulanten Neurorehabilitation beeinflussen kann, wurde mit den Depressions-Angst-Stress-Skalen (DASS-21) eine Raschanalyse durchgeführt, um ihre Eignung als Screeninginstrument zu untersuchen.
Ergebnisse und Diskussion: In der ersten Studie wurde explorativ die teilhabebezogene Ergebnisqualität in vier ambulanten Reha-Einrichtungen im österreichischen Vorarlberg erfasst. Es zeigten sich positive Entwicklungen im Reha-Verlauf. In deutschen ambulanten neurologischen Rehabilitationseinrichtungen konnten in Studie 2 mehrheitlich positive Teilhabeentwicklungen im Rehabilitationsverlauf gezeigt werden, darüber hinaus fanden sich aber auch Teilnehmer, deren Teilhabe sich nicht veränderte oder sogar verschlechterte. Als beeinflussende Kontextfaktoren konnten sowohl das Geschlecht als auch das Nettoeinkommen identifiziert werden, wobei die genauen Hintergründe hinsichtlich des Geschlechts noch weiterer Forschung bedürfen. In Studie 3 zeigte sich zudem, dass insbesondere eine niedrige Depressivität am Ende der Rehabilitation die Wahrscheinlichkeit erhöhte, in der Gruppe der Teilhabeverbesserten zu sein. Zu Beginn der Rehabilitation unterschieden sich die Depressivitäts-Werte der zum Ende der Rehabilitation Teilhabeverbesserten und Teilhabeverschlechterten nicht, was auf Einflussmöglichkeiten im Verlauf der Rehabilitation hindeutet. Die Mehrheit der Teilnehmer erfüllte nicht das Vollbild einer klinisch relevanten Depression. Bei der Raschanalyse einer Kurzversion der Depressions-Angst-Stress-Skalen (DASS-21) zeigte sich passend dazu, dass sich insbesondere eine zusammengefasste Skala aus Stress- und Depressions-Items, die den generellen Faktor „psychologischer Distress“ erfassen sollte, für den Einsatz in der ambulanten Neurorehabilitation als besonders geeignet erwies. Auch die Depressions- und die Stressskala konnten jedoch mit einigen Einschränkungen die Kriterien des Rasch-Modells erfüllen, die Angstskala erwies sich bei den Teilnehmern dieser Studie als ungeeignet, die Stichprobe erwies sich hinsichtlich des mit der Angstskala erfassten Angstkonstrukts als wenig ängstlich.
Fazit: Neben ersten, weiter zu erforschenden Erkenntnissen hinsichtlich der ambulanten Neurorehabilitation in Österreich konnten insbesondere Informationen zu unterschiedlichen Teilhabeverläufen und beeinflussenden Kontextfaktoren in der ambulanten Neurorehabilitation in Deutschland gewonnen werden. Insbesondere die kontinuierlich erfasste Variable Depressivität geriet hierbei in den Blickpunkt, die DASS-21 erwiesen sich im Rahmen einer Raschanalyse mit einigen Einschränkungen als geeignetes Screeninginstrument, um besonders gefährdete Patienten herauszufiltern. Neben der Untersuchung weiterer Kontextfaktoren besteht insbesondere noch Forschungsbedarf bei der Frage, welche Unterstützungsmethoden bei psychischem Distress im Rahmen der ambulanten Neurorehabilitation effizient und realistisch umsetzbar eingesetzt werden können
Alkohol liegt nach Tabak und Bluthochdruck an dritter Stelle der Risikofaktoren für Krankheit und vorzeitigen Tod in Europa. Häufig ist der zu starke Alkoholkonsum durch eine Alkoholabhängigkeit bedingt, die für die Betroffenen nur sehr schwer zu überwinden ist. Dies ist unter anderem dadurch begründet, dass der Effekt der bisher angewendeten Therapiemaßnahmen zur Bekämpfung dieser Sucht sehr limitiert ist. Um neue und bessere Therapien zu entwickeln, gilt es zunächst, das Verständnis für die Prozesse und Zusammenhänge, die für die Suchtentwicklung maßgeblich sind, zu verbessern. Eine große Rolle spielt dabei das zentrale Nervensystem des Menschen.
In dieser Arbeit wurden bestimmte Gehirnregionen, bei denen ein bekannter Zusammenhang zur Entwicklung einer Sucht besteht, auf Veränderungen durch Alkoholabhängigkeit untersucht. Dazu wurden Ratten zunächst durch chronisch-intermittierende Alkoholexposition in eine Alkoholabhängigkeit geführt, anschließend die Gehirne entnommen und mittels Golgi-Imprägnation eingefärbt. Nachfolgend wurden Nervenzellfortsätze (Dendriten) und ihre Eintrittspforten für Informationen (Dornen/Spines) aus Gyrus cinguli, Nucleus accumbens und Infralimbischem Kortex mittels Lichtmikroskopie dreidimensional aufgenommen und am Computer rekonstruiert. Diese Rekonstruktionen wurden dann auf Spinedichte (Spines/μm Dendritenlänge), Spinelänge und Spinedurchmesser analysiert. Hierbei wurde eine signifikant höhere Spinedichte im Gyrus cinguli und eine signifikant niedrigere Spinedichte im Nucleus accumbens der alkoholexponierten Tiere im Vergleich zur Kontrollgruppe festgestellt. Alle anderen Analysen ergaben keine Auffälligkeiten.
Die Erkenntnisse dieser Arbeit geben einen Einblick in die neuroplastischen Veränderungen, die durch Alkoholexposition hervorgerufen werden und unterstreichen die Relevanz von Gyrus cinguli und Nucleus accumbens für die Suchtentwicklung. Eine eindeutige Interpretation der Ergebnisse ist beim aktuellen Kenntnisstand nicht möglich, jedoch wird das Verständnis für den Gesamtzusammenhang der multifaktoriellen Alkoholabhängigkeit durch diese Arbeit verbessert.
Culicidae, auch bekannt als Stechmücken, sind medizinisch bedeutsame Zweiflügler, die als Vektoren eine Vielzahl von Krankheitserregern auf Menschen und Tiere übertragen können. Die vorliegende Arbeit beschäftigt sich einerseits mit der Verbreitung von zwei seltenen Stechmückenarten, welche im Rahmen eines Monitoringprojekts gefangen wurden, und andererseits mit der Ökologie der Asiatischen Tigermücke. Bei allen Arten handelt es sich um thermophile Arten, bei denen angenommen wird, dass der Klimawandel ihre Verbreitung Richtung Norden begünstigt. Dies konnte vor allem für die Art Uranotaenia unguiculata gezeigt werden, da sie an zwei Orten gefunden wurde, die ausgesprochen weit entfernt waren von der einzigen jemals zuvor beschriebenen Nachweisstelle in Deutschland. Obwohl an beiden Fundorten jeweils nur ein einziges adultes Individuum gefangen werden konnte, ergab eine Beprobung von potenziellen Bruthabitaten im darauffolgenden Jahr, dass lokale Reproduktion stattfand. Somit konnte eine ausschließliche Verschleppung von adulten Einzelindividuen weitgehend ausgeschlossen werden. Eine weitere seltene Stechmückenart, die im Zuge des Monitorings nachgewiesen werden konnte, ist Anopheles algeriensis. Diese Art wurde an drei Standorten gefangen, an zwei von ihnen mit einer viel höheren Abundanz als Ur. unguiculata.
Den ökologischen Teil dieser Arbeit machen Feld- und Laborexperimente mit Aedes albopictus aus. Sie dienten der Ermittlung der Kältetoleranz der Eier dieser Spezies, die als Vektor für eine Vielzahl von Viren und andere Pathogene gilt. Drei verschiedene Stämme, die aus tropischen, subtropischen und gemäßigten Breiten stammen, wurden niedrigen Temperaturen, welche typischerweise im Winter herrschen, unter Feld- und Laborbedingungen ausgesetzt. Die Experimente belegen, dass alle untersuchten Stämme prinzipiell einen Winter mit einem Temperaturminimum von –8 °C im Feld überleben konnten. Die Laborexperimente konnten hingegen zeigen, dass alle Stämme in der Lage waren, Temperaturen von –10 °C für eine gewisse Zeit zu ertragen. Die Überlebensfähigkeit schwankte je nach Stamm zwischen 2 und 20 Tagen. Dabei hatte der Stamm aus den gemäßigten Breiten eine Kältetoleranz, die nur wenig höher lag als die des subtropischen Stammes. Der tropische Stamm hingegen besaß die geringste Toleranz gegenüber niedrigen Temperaturen, sowohl in den Freiland- als auch in den Laborexperimenten. Diapausierende Eier zeigen nur eine höhere Kältetoleranz nahe den physiologischen Grenzen der jeweiligen Stämme. Weiterhin konnte festgestellt werden, dass Eier unter fluktuierenden Temperaturen eine bestimmte Minimaltemperatur länger aushalten konnten als unter konstanten Temperaturen. Somit zeigen beide Experimente, dass gewisse Stämme von Ae. albopictus eine sehr hohe Toleranz gegenüber niedrigen Temperaturen haben. Das macht es sehr wahrscheinlich, dass diese invasive Art Winter in Deutschland oder anderen mitteleuropäischen Ländern überleben und ihre Ausbreitung weiter fortschreiten werden. Diese Entwicklung wird epidemiologische Auswirkungen auf die Human- und Veterinärmedizin haben.
ABSTRACT
In the present study, we performed gastropod analyses on loess–palaeosol sequences from northeast Armenia (Southern Caucasia) covering at least three glacial–interglacial cycles. The elaborated ecostratigraphy shows significant patterns of species composition related to the succession of pedocomplexes and loess, respectively. Pedocomplexes included species that can be associated with high‐grass to forest‐steppe biomes, indicating increased humidity for these sections compared to the loess layers. In contrast, loess layers that relate to glacial periods are associated with gastropod species of semidesert environments with shrub‐ and shortgrass‐steppes, indicating semiarid to arid conditions. Furthermore, the loess deposits do not show any evidence for cold‐adapted gastropod species. Therefore, we suggest that average July temperatures in the study area were above 10 °C, even during periods of loess deposition. Consequently, we propose that the limiting factor for tree growth during glacial periods was aridity, rather than temperature. In addition, we observe environmental differences between the various glacial times, with our results indicating a trend towards steadily increasing aridity in Southern Caucasia across the Middle to Late Pleistocene.
Background: Annual transfusion rates in many European countries range between 25 and 35 red blood cell concentrates (RBCs)/1,000 population.It is unclear why transfusion rates in Germany are considerably higher (approx. 50–55 RBCs/1,000 population). Methods: We assessed the characteristics of transfusion recipients at all hospitals of the German federal state Mecklenburg-Western Pomerania during a 10-year longitudinal study. Results: Although 75% of patients received ≤4 RBCs/patient in 2015 (1 RBC: 11.3%; 2 RBCs: 42.6%; 3 RBCs: 6.3%; 4 RBCs: 15.0%), the mean transfusion index was 4.6 RBCs due to a minority of patients with a high transfusion demand. Two thirds of all RBCs were transfused to only 25% of RBC recipients. Consistently, male patients received a higher number of RBCs (2005: 54.2%; 2015: 56.8%) and had a higher mean transfusion index than female patients (mean 5.1 ± 7.2; median 2; inter-quartile range [IQR] 2–4 vs. mean 4.0 ± 5.8; median 2; IQR 2–4). The absolute transfusion demand decreased between 2005 and 2015 by 13.5% due to a composite of active reduction (clinical practice change) and population decline in the 65- to 75-year age group (lower birth rate cohort 1940–1950); however, with major differences between hospitals (range from –61.0 to +41.4%). Conclusion: Transfusion demand in a population could largely be driven by patients with high transfusion demand. Different treatment practices in this group of patients probably add to the major differences in transfusion demand per 1,000 individuals between countries. The available data cannot prove this hypothesis. Implementation of a diagnosis-related group-based monitoring system is urgently needed to allow informative monitoring on the population level and meaningful comparisons between transfusion practices.
Introduction: Multiparametric MRI (mpMRI) and MRI targeted biopsies (MRtb) are a new standard in prostate cancer (PCa) screening and diagnosis. Guidelines already include this approach for patients at risk. We aimed to gather information from German urologists about their knowledge, routine use, and attitude toward mpMRI and consecutive biopsy methods. Materials and Methods: An anonymous online questionnaire was sent via Survey Monkey to the members of the German Society of Urology (DGU). Statistical analyses were performed using SPSS version 25.0. Results: 496 members with a median age of 48.6 years (±11.7) participated in the survey. The majority rated mpMRI of the prostate as a very useful diagnostic tool (72.7%). MRtb of the prostate was considered as very advantageous (71.5%). MpMRI was used by 95.9%, and 83.2% also recommended MRtb predominantly in clinical institutions. For targeted biopsy, MRI-ultrasound fusion biopsy was clearly favored (75.8%). MpMRI was mostly used in patients with previously negative biopsy (90.9%) and in patients under active surveillance (60.9%). Arguments against the use of prostate mpMRI are costs (84.9%) and/or lack of sufficient radiological infrastructure (17.4%). Conclusion: Our data illustrate the meanwhile high acceptance and clinical use of the prostate mpMRI and MRtb in Germany.
Die initiale Integration von Implantaten ist von hoher Bedeutung für die spätere Stabilität und
Standzeit von beispielsweise Endoprothesen im Körper. Mit Hinblick auf die steigende Zahl
von Patienten, die ein Implantat benötigen, ist es von großer Bedeutung unterschiedliche
Implantatmaterialien und Oberflächenmodifizierungen bezüglich ihrer Eigenschaften und
Interaktionen mit dem Implantatlager zu untersuchen, um diese verbessern zu können.
Ziel der vorgestellten Arbeit war die Entwicklung und Etablierung eines Screeningmodells zur
Analyse der Auswirkung von verschiedenen Metallimplantaten auf die Mikrozirkulation in
unmittelbarer Nähe des Implantats.
Dazu wurde ein neues in vivo Modell an der Chorioallantoismembran des Hühnerembryos
entwickelt, angewendet und etabliert. Dieses stellt eine Modifikation des seit Jahrzehnten
etablierten HET-CAM (Hühnereitest an der Chorioallantoismembran) dar und ermöglicht
quantitative und qualitative intravitalmikroskopische Aussagen über die Funktionelle
Gefäßdichte (FGD) und die Leukozyten-Endothel-Interaktion (LEI).
Zunächst wurden im Zuge der Modellanwendung Nickel- und Titan-Implantate verglichen, um
die mögliche Reaktionsbreite des Modells zu untersuchen. Es folgte eine Etablierung des
Modells, indem die Oberfläche der Implantate kurz vor der Applikation mit kaltem
Atmosphärendruckplasma (CAP) behandelt wurde. Die intravitalmikroskopische
Untersuchung erfolgte jeweils 24 h nach Applikation.
Die Chorioallantoismembran der mit Nickel-Implantaten behandelten Hühnerembryonen
zeigte im Vergleich zur Titan- und der internen Kontrollgruppe eine signifikante Reduktion der
FGD sowie eine signifikante Erhöhung der LEI gegenüber der Kontrollgruppe. Durch
Vorbehandlung der Nickel-Implantate mit CAP konnte der Negativeffekt auf das Gefäßsystem
signifikant reduziert werden. Für Titanimplantate konnte mit Hinblick auf die FGD kein
zusätzlicher Effekt nach der Behandlung mit CAP detektiert werden.
Die vorgestellte Arbeit zeigt, dass sich das neue Modell als Screeningmodell dazu eignet, neue
Implantatmaterialien und Oberflächenmodifikationen an der Schwelle zwischen in vitro
Zellkultur und in vivo Tiermodellen zu untersuchen. Somit könnte es dabei helfen,
Tierversuche gezielter einzusetzen. Vorteile und Einschränkungen des Modells werden
diskutiert.