학술논문
Association of BDNFrisk variant and dorsolateral cortical thickness with long‐term treatment response to valproate in type I bipolar disorder: An exploratory study
Document Type
Article
Author
Source
American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics: The Official Publication of the International Society of Psychiatric Genetics; April 2024, Vol. 195 Issue: 3
Subject
Language
ISSN
15524841; 1552485X
Abstract
Valproate is among the most prescribed drugs for bipolar disorder; however, 87% of patients do not report full long‐term treatment response (LTTR) to this medication. One of valproate's suggested mechanisms of action involves the brain‐derived neurotrophic factor (BDNF), expressed in the brain areas regulating emotions, such as the prefrontal cortex. Nonetheless, data about the role of BDNFin LTTR and its implications in the structure of the dorsolateral prefrontal cortex (dlPFC) is scarce. We explore the association of BDNFvariants and dorsolateral cortical thickness (CT) with LTTR to valproate in bipolar disorder type I (BDI). Twenty‐eight BDI patients were genotyped for BDNFpolymorphisms rs1519480, rs6265, and rs7124442, and T1‐weighted 3D brain scans were acquired. LTTR to valproate was evaluated with Alda's scale. A logistic regression analysis was conducted to evaluate LTTR according to BDNFgenotypes and CT. We evaluated CT differences by genotypes with analysis of covariance. LTTR was associated with BDNFrs1519480 and right dlPFC thickness. Insufficient responders with the CC genotype had thicker right dlPFC than TC and TT genotypes. Full responders reported thicker right dlPFC in TC and TT genotypes. In conclusion, different patterns of CT related to BDNFgenotypes were identified, suggesting a potential biomarker of LTTR to valproate in our population.