Refine
Document Type
- Doctoral Thesis (2)
Language
- English (2) (remove)
Has Fulltext
- yes (2)
Is part of the Bibliography
- no (2) (remove)
Keywords
- Melanom (2) (remove)
There has been a substantial evolution of anti-cancer therapies in the last decade, leading
to improved prognosis and disease-free survival of patients with melanoma. Due to the
number of patients that still develop resistance or to the high systemic toxicity and side
effects, new treatment options are still needed. Regardless of the type of therapeutic
interventions (except surgery), the reactive oxygen species (ROS) are a by-product or
contribute to the action mechanism of many successful therapies. In this context, medical
cold atmospheric plasma (CAP) arises as a promising tool, and studies are important to
prove the effectiveness of this new device.
Since combination therapies are the current standard way to treat melanoma, we explored
candidates to be combined with cold atmospheric plasma, with potential to become a
therapeutic option in the combination. Here, we tested the radiotherapy and clinically safe
mitochondrial inhibitor drugs. In the end of the study, both, ionizing radiation and four
mitochondrial-targeted-drugs showed to be promising candidates for the combination with
CAP. These combinations induced increased cytotoxicity and modulated the immune
system improving the anti-tumor immune response. Mitochondrial damage seems to be
the first stage to induce cellular deficiency and culminate in apoptotic cell death.
Furthermore the release of GM-CSF contribute to a pro inflammatory state and immune
system activation.
This dissertation showed that CAP serves as an excellent tool to boost melanoma cell
death and induce anti-tumor response. In addition, in our proposed therapeutic
combination, the intensity of plasma treatment could be decreased possibly resulting in
less systemic toxicity. Our results serves as model to be studied in other tumor entities.
Medical doctors sometimes make diagnoses in persons who are not their patients and who did not ask for their medical opinion, e.g., when an off-duty dermatologist diagnoses melanoma in a stranger, outside of the hospital setting. These diagnoses are referred to as unsolicited medical opinions.
The unsolicited medical opinion raises several ethical questions. Most importantly, it poses a moral challenge for the physician: a possible disease, which may lead to a serious loss of health, is recognised in a person who is not the physician’s patient, outside of the formal medical context. The fundamental ethical question addressed in this dissertation is: Does a medical doctor who makes a clinical diagnosis in a stranger, outside of the formal medical context, have an ethical obligation to offer an unsolicited medical opinion?
This ethical question involves some related questions: If physicians do have an ethical obligation to offer an unsolicited medical opinion, are there any limiting factors to this obligation, which would justify not acting? A more practical question is also raised: How should a physician approach the person in whom an unsolicited diagnosis is made?
The cumulative dissertation is based on three publications addressing the unsolicited medical opinion. Firstly, the unsolicited medical opinion is explored from the perspective of utilitarianism, and a utilitarian argument is made in favour of offering an unsolicited medical opinion. Secondly, the topic is placed in the context of the existing scientific literature and analysed from the perspective of several ethical theories: virtue ethics, care ethics, principlism and contract theory. Lastly, the unsolicited medical opinion is discussed in the context of “medically unknown symptoms”. As in the central argument of this thesis, a utilitarian principle is applied and an argument made in favour of an unsolicited mental health diagnosis.