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Int J Eat Disord. 2008 Jul;41(5):399-404. doi: 10.1002/eat.20516.

Association of 5-HTT gene polymorphism, platelet MAO activity, and drive for thinness in a population-based sample of adolescent girls.

Author information

1
Department of Psychology, Estonian Centre of Behavioural and Health Sciences, University of Tartu, Estonia.

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.

PMID:
18306344
DOI:
10.1002/eat.20516
[Indexed for MEDLINE]

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