脑源性神经营养因子Val66Met功能基因多态性与环境因素对抗抑郁剂临床疗效的影响

目的 探讨脑源性神经营养因子(brain-derived neurotrophic factor,BDNF)Val66Met功能基因多态性和环境因素及其相互作用对抗抑郁剂治疗抑郁症临床疗效的影响.方法 按照美国诊断和统计手册第4版(DSM-Ⅳ)入组340例抑郁症患者,其中280例完成12周抗抑郁剂治疗.治疗前后采用汉密尔顿抑郁量表(HDRS)评定抑郁严重程度和治疗疗效,采用儿童期创伤问卷(CTQ-SF)及生活事件量表(LES)分别评定早期负性生活事件及发病前应激事件刺激量,采用Illumina GoldenGate定制芯片分析患者BDNFVal66Met基因多态性并进行基因分型.结果 抑郁症未痊愈组患者中男性比例显著高于痊愈组(P=0.008).痊愈组BDNF Val66Met基因型分布(AA:AG:GG=28:79:40),等位基因分布(A:G=135:159)与未痊愈组中基因型分布(AA:AG:GG=29:81:23)和等位基因分布(A:G=139:127),经性别校正后差异无统计学意义(P＞0.05).将患者分为首发患者和复发患者,均未发现BDNF Val66Met基因型和等位基因分布频率在2组间差异有显著性(均P＞0.05).儿童期创伤问卷及生活事件量表分值2组间差异无统计学意义(P＞0.05);多元回归分析显示患者年龄和LES社交问题分值进入回归方程,是影响抑郁严重程度的主要因素,而Logistic回归分析显示患者性别、HDRS基线分值及精神疾病家族史进入回归方程,是抗抑郁剂近期疗效的影响因素(均P＜0.05).多因素Logistic回归模型分析显示BDNF Val66Met基因型及各量表赋值交互作用对抗抑郁剂疗效影响并无统计学意义(均P＞0.05).结论 伴有精神疾病家族史、抑郁症状严重、年龄较大的男性抑郁症患者近期疗效差,但BDNF Val66Met功能基因多态性、早期负性生活事件及其相互作用不是抗抑郁剂疗效的主要影响因素.

Effect of brain-derived neurotrophic factor Val66Met polymorphism and environmental factors on antidepressant treatment

Objective To explore the effect of brain-derived neurotrophic factor (BDNF) Val66Met polymorphism,environmental factor and their interactions on antidepressant treatment.Methods 340 patients of major depressive disorder (MDD) who met the diagnosis criteria of MDD ( DSM-Ⅳ Axis Ⅰ) were recruited.280 patients of them were finished 12 weeks antidepressant treatment.The severity of depression was measured with the Hamilton Depression Rating Scale (HDRS) before and after 12 weeks antidepressant treatment.Childhood Trauma Questionnaire,28-item Short Form (CTQ-SF) and Life Events Scale (LES) were used to evaluate childhood adverse and life stress before onset.Genotyping of BDNF Val66Met polymorphism was detected by Illumina GoldenGate assays.Results Male patients proportion were significantly higher in non-remitters than remitters (P =0.008 ).After adjusting by gender, the frequencies of genotype and allele for the BDNF Val66Met polymorphism were no significant difference between remitters (AA: AG: GG = 28: 79: 40, A:G = 135:159 ) and non-remitters (AA: AG: GG = 29:81:23 ,A: G = 139:127 ) (P ＞0.05 ).There was no significant difference of CTQ scores and LES scores between the two groups (P＞0.05 ).The regression analysis showed that social intercourse problem and age were the risk factor for the severity of depression.The gender, HDRS baseline scores and mental disorder family history were associated with the efficacy of 12 weeks antidepressant.However,there was no significantly relationship between the interaction of BDNF Val66Met polymorphism and environment with the antidepressant treatment.Conclusion The older men with the mental disorder family history, severe depression symptom would be less-response to antidepressant treatment.However, BDNF Val66Met polymorphism, childhood trauma, life events stress and the interaction of BDNF Val66Met polymorphism and environment have no significantly effect on the 12 weeks antidepressant treatment.