缺陷型及非缺陷型首发精神分裂症患者听觉感觉门控P50的对照研究  被引量:9

P50 auditory sensory gating in first episode deficit and non-deficit schizophrenia

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作  者:李喆[1] 邓伟[1] 林鄞[1] 李名立[1] 李寅飞[1] 刘祥[1] 郑重[2] 李涛[1] 

机构地区:[1]四川大学华西医院心理卫生中心,四川成都610041 [2]四川大学华西医院神经生物检测中心

出  处:《中国神经精神疾病杂志》2013年第4期218-223,共6页Chinese Journal of Nervous and Mental Diseases

基  金:国家自然科学基金项目(编号:81130024);科技部"十二五"支撑计划(编号:2011BAZ02530);教育部博士点基金(编号:20110181110014)

摘  要:目的探讨缺陷型与非缺陷型首发精神分裂症患者听觉感觉门控P50的特征及与临床特征的相关性。方法运用条件(S1)-测试(S2)刺激模式检测60例非缺陷型首发精神分裂症患者(非缺陷组)、47例缺陷型首发精神分裂症患者(缺陷组)及60名正常对照(对照组)的P50,并比较三组间差异;采用阳性和阴性症状量表(Positive and Negative Syndrome Scale,PANSS)评估患者精神症状,大体功能评定量表(Global Assessment ofFunctioning Scale,GAF)评定患者社会、职业和心理功能的总体功能水平。控制性别等因素,偏相关分析非缺陷组及缺陷组P50同临床特征的关系。结果缺陷组的S2-P50波幅(3.76±1.69)较非缺陷组(2.16±1.20)和对照组(2.13±0.94)增高(P<0.01);而与后两组分别比较,缺陷组的S2/S1波幅比增高[缺陷组(0.82±0.11)vs.非缺陷组(0.43±0.10)vs.对照组(0.40±0.06)](P<0.01),S1-S2波幅差值[缺陷组(0.78±0.49)vs.非缺陷组(2.77±1.49)vs.对照组(3.19±1.18)]和P50抑制度[缺陷组(17.59±10.58)vs.非缺陷组(57.32±9.79)vs.对照组(60.41±5.79)]均降低(P<0.01)。偏相关分析显示,缺陷组的S2-P50波幅与其PANSS总分(r=0.40,P=0.01)和阴性量表分(r=0.33,P=0.02)呈正相关,而S1-P50波幅与其PANSS总分(r=-0.39,P=0.01)呈负相关;缺陷组的P50抑制指标同临床特征均无相关性(P>0.05);而非缺陷组的S1-P50波幅、S2-P50波幅,S1-P50潜伏期、S2-P50潜伏期及P50抑制指标的三种表达式与临床特征相关性均无统计学意义(P>0.05)。结论精神分裂症缺陷型存在听觉感觉门控P50的抑制缺陷,而非缺陷型无此损害,两类亚型可能存在不同神经病理机制;P50抑制可能是缺陷型精神分裂症的素质性标记。Objective To detect the P50 auditory sensory gating in the first episode deficit and non-deficit schizophrenia and the relationship between P50 and clinical variables. Methods Nihon Kohden evoked brain potentials machine were used to measure P50 in 60 patients with non-deficit schizophrenia (NDS), 47 patients with deficit schizophrenia (DS) and 60 unrelated healthy controls (HC). Conditioning (S1)-testing (S2) stimulus paradigm was used to record the P50. The clinical status of patients with schizophrenia was determined using the Positive and Negative Syndrome Scale (PANSS). The social, occupational, and psychological functioning status was assessed using the Global Assessment of Functioning Scale (GAF). Partial correlations were computed to explore associations between the P50 and the clinical data when controlling for gender etc. in NDS and DS. Results Among DS, NDS and HC groups, there were significant differences in S2-P50 amplitude [(3.76+ 1.69) vs. (2.16±1.20) vs. (2.13±0.94)], SiS, ratio [(0.82±0.11) vs. (0.43±0.10) vs. (0.40±0.06)], S1-S2 amplitude [(0.78±0.49) vs. (2.77± 1.49) vs. (3.19± 1.18)], and 100(1-SJS~) ratio [(17.59± 10.58) vs. (57.32±9.79) vs. (60.41±5.79)] (all P〈0.01). DS group showed significantly higher S2-P5 amplitude than NDS group (P〈 0.01) and HC group (P〈0.01). DS group also showed significantly higher SJS~ ratio, lower S^-Sz amplitude, and lower 100 (1-SIS,) ratio than NDS group (P〈0.01) and HC group (P〈0.01). In partial correlation analysis, S2 amplitude of DS group correlated positively with PANSS total score (r=0.40, P=0.01) and PANSS subscale of negative symptoms (r=0.33, P= 0.02). Sj amplitude of DS group correlated negatively with PANSS total score (r=-0.39, P=0.01). No correlation was found between P50 suppression and clinical variables in DS group (P〉0.05). Whereas, no correlations were found between the components of P50, P50 suppres

关 键 词:精神分裂症 缺陷型 非缺陷型 感觉门控 听觉P50电位 

分 类 号:R749.3[医药卫生—神经病学与精神病学]

 

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