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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.
Abstract
Background
The health status of newborns is a major concern for parents and medical personnel. Recent studies have provided increasing evidence that factors from the foetal and perinatal periods of life influence health later in life. The “Follow‐up of the Survey of Neonates in Pomerania” (SNiP‐I‐Follow‐up) is the first follow‐up of the population‐based birth cohort study, SNiP‐I, established in north‐east Germany.
Objectives
The primary aim of SNiP‐I‐Follow‐up study was the collection of longitudinal data on children and adolescents. The associations will be analysed between risk factors in pregnancy and the perinatal period and health status in infancy and later childhood.
Population
The population‐based cohort study SNiP‐I was conducted in Pomerania in north‐east Germany between February 2002 and November 2008. All mothers from the SNiP‐I birth cohort were recontacted when their children were from 9 to 15 years of age.
Design
The SNiP‐I‐Follow‐up study was carried out between December 2016 and August 2017 and is a questionnaire‐based survey.
Methods
Physical development, health status, and social behaviour (school and leisure behaviour) of children were analysed using a questionnaire comprising medical, epidemiological, and socio‐economic data, associated health care risk factors, and life circumstances of newborns, children, and their parents.
Preliminary results
Out of 5725 children invited to participate in the SNiP‐I‐Follow‐up study between December 2016 and August 2017, 29% (n = 1665) children participated in the SNiP‐I‐Follow‐up study, providing data on 1665 mothers‐child dyads. Responders had higher socio‐economic status, especially in relation to maternal education status.
Conclusion
As a longitudinal birth cohort from rural Germany, the SNiP cohort will be a resource to address urgent research needs and contribute to overall population health.