Yener Güzelcan

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Post-traumatic stress disorder (PTSD) has been associated with dysregulation of the neuroendocrine system. In this study we examine the effects of psychotherapy in 21 PTSD patients, with and without coexisting depression, on the levels of six stress-related hormones: cortisol, dehydroepiandrosterone (DHEA), and dehydroepiandrosterone-sulfate (DHEA-S),(More)
Posttraumatic stress disorder (PTSD) has been associated with dysregulation of the hypothalamus-pituitary-adrenal (HPA) axis as well as of the hypothalamus-pituitary-thyroid (HPT) axis. Findings have not been consistent and may depend on methodological issues like controlling for relevant variables. This study examines the levels of six HPA and HPT-axis(More)
Peduncular hallucinations are vivid, complex visual hallucinations. They generally arise as a result of lesions in the midbrain. A 46-year-old man had peduncular hallucinations arising from a tumour in the right thalamus. The patient was not operated on for this tumour. The visual hallucinations were treated with psychiatric medications. This treatment(More)
BACKGROUND Studies have shown a clear relationship between depressive disorders and vitamin B12 deficiency. Gastroenteritis and Helicobacter pylori infections can cause vitamin B12 deficiency. Helicobacter pylori infections are not uncommon among people of Turkish descent in The Netherlands. AIM To examine the frequency of vitamin B12 deficiency in(More)
BACKGROUND Clozapine, an atypical antipsychotic used in the treatment of refractory schizophrenia, causes agranulocytosis in 0.8% of patients. The risk factors for clozapine-induced agranulocytosis (CIA) and the underlying mechanisms are unclear. AIM To ascertain the genetic and immunological risk factors for CIA, and on the basis of these findings to(More)
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