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Affective Temperament: A Mediating Variable Between Environment and Clinical Depression?
Zoltan Rihmer, MD, PhD, DSc;
Xenia Gonda;
Kareen K. Akiskal;
Hagop S. Akiskal, MD
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In the interesting study by Neumeister et al,1 they found that behavioral responses to tryptophan depletion (TD) were affected by a polymorphism in the promoter of the serotonin transporter gene (5-HTTLPR) in patients with remitted major depressive disorder and healthy controls. Among the 26 controls, TD induced an increase in Hamilton Depression Rating Scale total scores from baseline to 7 hours after the ingestion of the amino acid mixture in S/S and L/S but not in L/L carriers. Similarly, controls also showed increased anxiety scores in the S/S and L/S subgroups but not in the L/L subgroup.1
These results become more interesting in light of our recent study2 showing a significant association between S/S and S/L carriers of . . . [Full Text of this Article] AUTHOR INFORMATION
RELATED ARTICLE
Differential Effects of 5-HTTLPR Genotypes on the Behavioral and Neural Responses to Tryptophan Depletion in Patients With Major Depression and Controls
Alexander Neumeister, Xian-Zhang Hu, David A. Luckenbaugh, Markus Schwarz, Allison C. Nugent, Omer Bonne, Peter Herscovitch, David Goldman, Wayne C. Drevets, and Dennis S. Charney
Arch Gen Psychiatry. 2006;63(9):978-986.
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