Association of 5-HTT gene polymorphism, platelet MAO activity, and drive for thinness in a population-based sample of adolescent girls.
Int J Eat Disord
; 41(5): 399-404, 2008 Jul.
Article
in En
| MEDLINE
| ID: mdl-18306344
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.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polymorphism, Genetic
/
Thinness
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Blood Platelets
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Anorexia Nervosa
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Serotonin Plasma Membrane Transport Proteins
/
Bulimia Nervosa
/
Monoamine Oxidase
Type of study:
Prognostic_studies
/
Risk_factors_studies
Limits:
Child
/
Female
/
Humans
/
Male
Country/Region as subject:
Europa
Language:
En
Journal:
Int J Eat Disord
Year:
2008
Document type:
Article
Affiliation country: