Serotonin transporter gene alters insula activity to threat in social anxiety disorder.

Abstract:

:Amygdala and insula hyper-reactivity to threat is implicated in social anxiety disorder (SAD) yet inconsistencies in activation have been reported. One source of variance are individual differences in 5-HTTLPR genotype where the short (S), relative to long (L) allele, corresponds with greater amygdala activation. However, the impact of genotype on insula to threat in SAD is not known. During functional MRI, 34 SAD patients and 28 healthy controls completed a perceptual assessment task comprising angry, fear, and happy faces. Results showed no diagnostic group differences in limbic/paralimbic regions but within SAD, greater insula, but not amygdala, activation to fearful faces was observed in patients with SS genotype compared with LaLa genotype. Findings indicate genotype influenced insula activation to threat in SAD.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Klumpp H,Fitzgerald DA,Cook E,Shankman SA,Angstadt M,Phan KL

doi

10.1097/WNR.0000000000000210

subject

Has Abstract

pub_date

2014-08-20 00:00:00

pages

926-31

issue

12

eissn

0959-4965

issn

1473-558X

pii

00001756-201408200-00008

journal_volume

25

pub_type

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