Impaired prepulse inhibition of acoustic startle in Chinese patients with first-episode, medication-naive schizophrenia  

作　　者：WANG Zhi-ren TAN Yun-long YANG Fu-de ZHANG Wu-fang ZOU Yi-zhuang TAN Shu-ping SONG Chong-sheng LI Ying-li ZHANG Wei-hua ZHOU Dong-feng 

机构地区：[1]Institute of Mental Health, Peking University, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing 100191, China [2]Beijing Hui-Long-Guan Hospital, Beijing 100096, China

出　　处：《Chinese Medical Journal》2013年第3期526-531,共6页中华医学杂志（英文版）

基　　金：The research was partly completed when WANG Zhi-ren was in Institute of Mental Health of Peking University as a Ph.D candiadate, now he works in Beijing Hui-Long-Guan Hospital. This work was supported by grants from the National Basic Research Program of China （973 Program： 2007BC512307）, the Capital Medical Development Fund （2009-3148）, the National Natural Science Foundation of China （81000579） and the Beijing Municipal Science ＆ Technology Commission （No. D0906001040191）.

摘　　要：Background Patients with schizophrenia have prominent abnormality in information processing that can be observed by measures of prepulse inhibition （PPI） of acoustic startle reflex and PPI deficits have been considered as a candidate endophenotypic marker of schizophrenia. However, there has been little information on PPI and related measures in Chinese patients with schizophrenia. The research was to explore the deficits of acoustic startle reflex that might exist in Chinese patients with schizophrenia. Methods Startle response to acoustic stimuli, habituation, and PPI were examined in 31 Chinese patients with first-episode, medication-naive schizophrenia and 30 age-and sex-matched healthy Chinese controls. At the same day of startle testing, psychopathological symptoms of the patients were assessed with the Positive and Negative Syndrome Scale （PANSS）. Results Compared with healthy controls, patients exhibited the significant reduction in startle response and PPI deficits at 60 milliseconds （ms） intervals （PP160, P 〈0.05） but not at 30 or 120 ms intervals. Furthermore, there was a relatively strong correlation between PPI60 （P 〈0.05） and scores of positive scale of PANSS in patients with schizophrenia. Conclusion Our findings confirmed impaired PPI in Chinese patients with schizophrenia and suggested that a relationship between sensorimotor gating deficits and clinical symptoms of patients with schizophrenia might exist.Background Patients with schizophrenia have prominent abnormality in information processing that can be observed by measures of prepulse inhibition （PPI） of acoustic startle reflex and PPI deficits have been considered as a candidate endophenotypic marker of schizophrenia. However, there has been little information on PPI and related measures in Chinese patients with schizophrenia. The research was to explore the deficits of acoustic startle reflex that might exist in Chinese patients with schizophrenia. Methods Startle response to acoustic stimuli, habituation, and PPI were examined in 31 Chinese patients with first-episode, medication-naive schizophrenia and 30 age-and sex-matched healthy Chinese controls. At the same day of startle testing, psychopathological symptoms of the patients were assessed with the Positive and Negative Syndrome Scale （PANSS）. Results Compared with healthy controls, patients exhibited the significant reduction in startle response and PPI deficits at 60 milliseconds （ms） intervals （PP160, P 〈0.05） but not at 30 or 120 ms intervals. Furthermore, there was a relatively strong correlation between PPI60 （P 〈0.05） and scores of positive scale of PANSS in patients with schizophrenia. Conclusion Our findings confirmed impaired PPI in Chinese patients with schizophrenia and suggested that a relationship between sensorimotor gating deficits and clinical symptoms of patients with schizophrenia might exist.

关 键 词：acoustic startle prepulse inhibition SCHIZOPHRENIA 

分 类 号：S858.291[农业科学—临床兽医学] R749.3[农业科学—兽医学]