优势比
置信区间
焦虑
内科学
萧条(经济学)
医学
广泛性焦虑症
多态性(计算机科学)
等位基因
病因学
内分泌学
精神科
胃肠病学
心理学
基因
遗传学
生物
宏观经济学
经济
作者
Esther Molina,Jorge A. Cervilla,Margarita Rivera,Francisco Torres,Juan Ángel Bellón,B. Moreno,Michael King,Irwin Nazareth,Blanca Gutiérrez
出处
期刊:Psychiatric Genetics
[Ovid Technologies (Wolters Kluwer)]
日期:2011-08-01
卷期号:21 (4): 195-201
被引量:46
标识
DOI:10.1097/ypg.0b013e3283457a48
摘要
Background Serotonin 1-A receptors are key regulators of serotonin activity and their dysregulation might be implicated in the emergence of both major depression (MD) and generalized anxiety disorder (GAD). Previous studies have yielded inconclusive results as to whether the 5-HT1A receptor gene (HTR1A) has a role in the aetiology of MD and no study up to date has analysed this polymorphism on either pure MD or MD comorbid with GAD. Methods In this study, 1059 patients taking part in the PREDICT-Gene study were ascertained for Diagnostic and Statistical Manual of Mental Disorders-IV MD and GAD diagnoses using the Composite International Diagnostic Interview and the Primary Care Evaluation of Mental Disorders questionnaire, respectively. They were also genotyped for the C(-1019)G functional polymorphism at the promoter region of HTR1A gene. Results Genetic variability at HTR1A was significantly associated with MD [odds ratio (OR)=1.67; 95% confidence interval (CI)=1.14–2.44; P=0.008], although this effect disappeared after adjusting for GAD (OR=1.43; 95% CI=0.96–2.14; P=0.080). Similarly, a crude association between C(-1019)G polymorphism and GAD was found (OR=2.54; 95% CI=1.28–4.86; P=0.003), but these results became no longer significant after adjusting for MD (OR=1.97; 95% CI=0.99–3.91; P=0.050). However, a main effect of HTR1A G(-1019) allele on comorbid MD–GAD was found (OR=3.41; 95% CI=1.44–8.05; P=0.005) and it remained robust and statistically significant after adjusting by sex, age and family history of psychological problems (OR=2.82; 95% CI=1.18–6.77; P=0.020). Conclusion In our study, the HTR1A C(-1019)G polymorphism was found to be associated to the frequent clinical presentation of comorbid MD and GAD, suggesting a common genetic background for mixed depression and anxiety states. These findings should be considered as preliminary. Future replications in independent samples would be needed to confirm or discard such association.
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