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(PSYCHIATRIC TIMES) - The 5-HTT gene was found to predict an individual's sensitivity to stressful events (Science 2003;301[5631]:386-389). Researchers divided 847 members of the Dunedin Multidisciplinary Health and Development Study into three groups based on their 5-HTT gene-linked polymorphic region genotype: those with two copies of the short allele (s/s homozygotes; 17%), one copy of the short allele (s/l heterozygotes; 51%), and two copies of the long allele (l/l homozygotes; 31%). Stressful life events that occurred after the 21st birthday and before the 26th were assessed.

Self-reports of depressive symptoms due to life events at age 26 were stronger in subjects with one short allele than l/l homozygotes. Subjects with a short allele whose life events occurred after their 21st birthday experienced an increase in depressive symptoms between the ages of 21 to 26.

For full article, please visit:
http://www.psychiatrictimes.com/depression/article/10168/47611p

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