Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5845462 | Progress in Neuro-Psychopharmacology and Biological Psychiatry | 2011 | 5 Pages |
Across populations, findings suggest that rates of self-mutilation, suicidal acts, and other self-harming behaviors (SHBs) may be influenced by polymorphisms that code for activity of the serotonin transporter (e.g., 5HTTLPR) and the enzyme, monoamine oxidase A (e.g., MAOAuVNTR). SHBs being common in patients with Eating Disorders (EDs), we evaluated (in a large sample of eating-disordered women) relationships between triallelic 5HTTLPR and MAOAuVNTR variants, on the one hand, and SHBs, on the other. We had 399 eating-disordered women report on eating symptoms and lifetime history of SHBs, and provide blood samples for genotyping. Individuals carrying high-function MAOAuVNTR alleles reported a history of SHBs about twice as often as did carriers of low-function alleles. We obtained no comparable main effect of 5HTTLPR, or MAOAuVNTRÂ ÃÂ 5HTTLPR interaction effect. Genetic variations did not predict severity of eating symptoms. As in other populations, our findings link the MAOAuVNTR high-function alleles with increased risk of self-directed harm in bulimic females. We discuss theoretical and clinical ramifications of our results.
Research Highlights⺠399 eating-disordered women reported on lifetime history of SHBs and provided blood samples for genotyping of 5HTTLPR and MAOAuVNTR. ⺠Individuals carrying high-function MAOAuVNTR alleles reported a history of SHBs about twice as often as did carriers of low-function alleles. ⺠We obtained no comparable effect of 5HTTLPR. ⺠Our findings link the MAOAuVNTR high-function alleles with increased risk of self-directed aggression in bulimic females.