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Evidence for alterations of cortical folding in anorexia nervosa

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Abstract

Anorexia nervosa (AN) is highly heritable, and the perspective on the etiology of AN has changed from a behavioral to a neurobiological and neurodevelopmental view. However, cortical folding as an important marker for deviations in brain development has yet rarely been explored in AN. Hence, in order to determine potential cortical folding alterations, we investigated fine-grained cortical folding in a cohort of 26 patients with AN, of whom 6 patients were recovered regarding their weight at the time point of MRI measurement. MRI-derived cortical folding was computed and compared between patients and healthy controls at about 150,000 points per hemisphere using a surface-based technique (FreeSurfer). Patients with AN exhibited highly significant increased cortical folding in a right dorsolateral prefrontal cortex region (DLPFC). Furthermore, a statistical trend in the same direction was found in the right visual cortex. We did not find a correlation of local cortical folding and current symptoms of the disease. In conclusion, our analyses provide first evidence that altered DLPFC cortical folding plays a role in the etiology of AN. The absence of correlations with clinical parameters implicates a relatively independence of cortical folding alterations from the current symptomatology and might thus be regarded as a trait characteristic of the disease potentially related to other neurobiological features of AN.

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Authors and Affiliations

  1. Department of Psychiatry and Psychotherapy, Jena University Hospital, Philosophenweg 3, 07740, Jena, Germany

    C. Christoph Schultz, Gerd Wagner, Feliberto de la Cruz, Sandy Berger, Heinrich Sauer & Karl J. Bär

  2. Psychiatric Brain & Body Research Group Jena, Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany

    Gerd Wagner, Feliberto de la Cruz, Sandy Berger & Karl J. Bär

  3. Medical Physics Group, Institute for Diagnostic and Interventional Radiology, Jena University Hospital, Jena, Germany

    Jürgen R. Reichenbach

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  1. C. Christoph Schultz
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Schultz, C.C., Wagner, G., de la Cruz, F. et al. Evidence for alterations of cortical folding in anorexia nervosa. Eur Arch Psychiatry Clin Neurosci 267, 41–49 (2017). https://doi.org/10.1007/s00406-015-0666-1

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