PMID- 23026378 OWN - NLM STAT- MEDLINE DCOM- 20130426 LR - 20131121 IS - 1872-7549 (Electronic) IS - 0166-4328 (Linking) VI - 237 DP - 2013 Jan 15 TI - COMT and BDNF interacted in bipolar II disorder not comorbid with anxiety disorder. PG - 243-8 LID - S0166-4328(12)00625-0 [pii] LID - 10.1016/j.bbr.2012.09.039 [doi] AB - Bipolar disorder (BP), especially bipolar II disorder (BP-II), is highly comorbid with anxiety disorder (AD). Monoaminergic dysfunction has been implicated in the pathogenesis of BP, it may be important to investigate genes such as the catechol-O-methyltransferase (COMT), involved in monoamine metabolism and brain-derived neurotrophic factor (BDNF) genes, modulating the monoamine system. We therefore examined the association of the COMT Val158Met and BDNF Val66Met polymorphisms with BP-II with and without comorbidity of AD, and possible interactions between these genes. Seven hundred and seventy-one participants were recruited: 314 with bipolar-II without AD, 117 with bipolar-II with AD, and 340 healthy controls. The genotypes of the COMT and BDNF polymorphisms were determined using polymerase chain reactions plus restriction fragment length polymorphism analysis. Logistic regression analysis showed a significant effect of the COMT and the BDNF polymorphisms, and a significant interaction effect for the Val/Val genotypes of the BDNF Val66Met polymorphism and the COMsT Val158Met Val/Met and Met/Met genotypes (P=0.007, 0.048) discriminated between BP-II without AD patients and controls. Our findings provide initial evidence that the COMT and BDNF genes interact in bipolar-II without AD. Our findings suggest the involvement of dopaminergic pathway in the pathogenesis of bipolar-II. CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - Lee, Sheng-Yu AU - Lee SY AD - Department of Psychiatry, National Cheng Kung University, Tainan, Taiwan. FAU - Chen, Shiou-Lan AU - Chen SL FAU - Wang, Yu-Shan AU - Wang YS FAU - Chang, Yun-Hsuan AU - Chang YH FAU - Huang, San-Yuan AU - Huang SY FAU - Tzeng, Nian-Sheng AU - Tzeng NS FAU - Lee, I Hui AU - Lee IH FAU - Yeh, Tzung Lieh AU - Yeh TL FAU - Yang, Yen Kuang AU - Yang YK FAU - Lu, Ru-Band AU - Lu RB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120929 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Brain-Derived Neurotrophic Factor) RN - AE28F7PNPL (Methionine) RN - EC 2.1.1.6 (Catechol O-Methyltransferase) RN - HG18B9YRS7 (Valine) SB - IM MH - Adult MH - Anxiety Disorders/complications/*genetics MH - Bipolar Disorder/complications/*genetics MH - Brain-Derived Neurotrophic Factor/*genetics MH - Catechol O-Methyltransferase/*genetics MH - Female MH - Gene Frequency MH - *Genetic Predisposition to Disease MH - Genotype MH - Humans MH - Logistic Models MH - Male MH - Methionine/genetics MH - Polymorphism, Single Nucleotide/*genetics MH - Valine/genetics MH - Young Adult EDAT- 2012/10/03 06:00 MHDA- 2013/04/27 06:00 CRDT- 2012/10/03 06:00 PHST- 2012/08/10 00:00 [received] PHST- 2012/09/18 00:00 [revised] PHST- 2012/09/20 00:00 [accepted] PHST- 2012/10/03 06:00 [entrez] PHST- 2012/10/03 06:00 [pubmed] PHST- 2013/04/27 06:00 [medline] AID - S0166-4328(12)00625-0 [pii] AID - 10.1016/j.bbr.2012.09.039 [doi] PST - ppublish SO - Behav Brain Res. 2013 Jan 15;237:243-8. doi: 10.1016/j.bbr.2012.09.039. Epub 2012 Sep 29.