Deike Weiss

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Proopiomelanocortin (POMC) and its derived peptides, in particular alpha-MSH, have been shown to play a crucial role in the regulation of hunger, satiety and energy homeostasis. Studies in patients with anorexia nervosa (AN) suggest an abnormal expression of appetite-regulating hormones. Hormone expression levels may be modulated by epigenetic mechanisms,(More)
Anorexia nervosa (AN) commonly arises during adolescence, leading to interruptions of somatic and psychological development as well as to cortical atrophy and reductions of brain volume. While most brain changes shift towards normal with weight restoration, it is not certain whether they are related to the loss of brain cells, neuropil or merely due to(More)
OBJECTIVE Our pilot study evaluates the impact of environmental factors, such as nutrition and smoking status, on epigenetic patterns in a disease-associated gene. METHOD We measured the effects of malnutrition and cigarette smoking on proopiomelanocortin (POMC) promoter-specific DNA methylation in female patients with and without anorexia nervosa (AN).(More)
Anorexia nervosa (AN) commonly arises during adolescence leading to interruptions of somatic and psychological development as well as to atrophic brain changes. It remains unclear whether these brain changes are related to the loss of neurons, glia, neuropil or merely due to fluid shifts. We determined leptin levels and two brain-derived damage markers:(More)
BACKGROUND The prohormone preproenkephalin (ppE) and its derived peptides are involved in leukocyte functioning as well as in the regulation of hunger and satiety. Various abnormalities of the immune and endocrine systems have been described in states of malnutrition such as anorexia nervosa (AN). We hypothesized that ppE expression in AN patients may vary(More)
INTRODUCTION In food-restricted rats, leptin as well as corticotropin releasing factor attenuate semistarvation-induced hyperactivity (SIH). Results from studies in patients with anorexia nervosa (AN) showed an association between excessive physical activity (PA) and leptin. One recent report suggests a role for cortisol in PA. In this study, we assessed(More)
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