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Enhanced platelet serotonin 5-HT2A receptor binding in anorexia nervosa and bulimia nervosa.
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Psychiatry.
1999 (English)In: European Neuropsychopharmacology, ISSN 0924-977X, E-ISSN 1873-7862, Vol. 9, no 6, 469-73 p.Article in journal (Refereed) Published
Abstract [en]

Some evidence exists to suggest that serotonin 5-HT2A receptor function is altered in anorexia nervosa and bulimia nervosa. In order to further investigate the 5-HT2A receptor in eating disorders, platelet [3H]lysergic acid diethylamide ([3H]LSD) binding was studied in ten patients with anorexia nervosa, 23 patients with bulimia nervosa and 33 healthy controls. At admission, Bmax for platelet [3H]LSD binding was significantly higher both in the anorexia nervosa group (30.6+/-4.2 fmol/mg protein; mean+/-S.D.) and in the bulimia nervosa group (30.8+/-7.6 fmol/mg protein) than in the control group (23.5+/-6.3 fmol/mg protein; p=0.01 and p=0.003, respectively). Kd was borderline significantly higher among anorexics (median 1.45 nM) and significantly higher among bulimics (median 1.66 nM) than among controls (median 0.95 nM; p=0.05 and 0.003, respectively). The Global Assessment of Functioning score and the body mass index were both significantly negatively correlated to Kd (r=-0.40; p=0.03 and r=-0.41 p=0.03, respectively), but not to Bmax. The present study indicates that patients with anorexia nervosa as well as patients with bulimia nervosa have an enhanced 5-HT2A receptor binding and provides further evidence for a serotonergic dysfunction in eating disorders.

Place, publisher, year, edition, pages
1999. Vol. 9, no 6, 469-73 p.
URN: urn:nbn:se:umu:diva-44020PubMedID: 10625113OAI: diva2:417634
Available from: 2011-05-17 Created: 2011-05-17 Last updated: 2011-05-17

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