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- Akkermann, Kirsti, et al.
(author)
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Association of 5-HTT gene polymorphism, platelet MAO activity, and drive for thinness in a population-based sample of adolescent girls
- 2008
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In: International Journal of Eating Disorders. - : Wiley. - 0276-3478 .- 1098-108X. ; 41:5, s. 399-404
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Journal article (peer-reviewed)abstract
- OBJECTIVE: Several lines of evidence suggest that alterations in serotonergic activity contribute to the pathophysiology of abnormal eating behaviors. Since platelet monoamine oxidase (MAO) activity and the 5-HT transporter gene promoter polymorphism (5-HTTLPR) have been associated with eating disorders, the knowledge from a population-based sample may provide useful information which changes in 5-HT function observed in eating disorders represent trait vs. state effects. METHOD: The sample was based on both cohorts of the Estonian Children Personality, Behavior and Health Study (ECPBHS). The current study was conducted during the second follow-up where altogether 82% from the original sample was recruited. EDI-2 subscales--Drive for Thinness and Bulimia--were used to determine eating attitudes and behaviors. Platelet MAO activity was measured and the participants were genotyped for the 5-HTTLPR. RESULTS: Allelic variation of 5-HTTLPR or platelet MAO activity were not independently associated with drive for thinness or binge eating, but girls homozygous for the 5-HTTLPR long allele and with high platelet MAO activity, both considered indicators of a higher capacity 5-HT system, exhibited higher scores of drive for thinness. CONCLUSION: The results suggest that drive for thinness is the highest in girls with the presence of two markers of higher serotonergic capacity.
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- Birgegård, Andreas, et al.
(author)
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Anorexic self-control and bulimic self-hate : differential outcome prediction from initial self-image
- 2009
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In: International Journal of Eating Disorders. - : Wiley. - 0276-3478 .- 1098-108X. ; 42:6, s. 522-530
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Journal article (peer-reviewed)abstract
- OBJECTIVE:: The study investigated initial self-image (structural analysis of social behavior) and its relation to 36-month outcome, among patients with anorexia nervosa and bulimia nervosa. Hypotheses were that degree of different aspects of self-image would predict outcome in the groups. METHOD:: Participants were 52 patients with anorexia and 91 with bulimia from a longitudinal naturalistic database, and outcome measures included eating disorder and psychiatric symptoms and a general outcome index. Stepwise regression was used to investigate which self-image variables were related to outcome, and multiple regression contrasted the groups directly on each obtained predictor. RESULTS:: Consistent with hypotheses, in bulimia degree of self-hate/self-love moderately predicted outcome, whereas self-control-related variables powerfully predicted outcome in anorexia. CONCLUSION:: It is important to focus on self-image in the treatment of both diagnostic groups, but especially in anorexia nervosa, where control-submission interactions between patient and therapist should be handled with care.
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