Abstract
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: glial fibrillary acidic protein (GFAP) and neuron-specific enolase (NSE) of 43 acute AN patients and 50 healthy control woman (HCW). Peripheral GFAP and NSE concentrations of AN patients were not elevated and not different from HCW. Subjects with particularly low leptin concentration, indicating severe malnutrition, did not show abnormal values either. During weight recovery the marker proteins remained unchanged. Our preliminary results are in line with neuroimaging studies supporting the reversibility of brain changes in AN and do not substantiate hypotheses relying on the extensive damage of brain cells as an explanation for cerebral atrophy in AN.
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