颅脑创伤在载脂蛋白E基因影响脑电活动中的诱发作用

目的探讨颅脑创伤是否在载脂蛋白E基因(apolipoprotein E,APOE)对脑电活动的影响当中起诱发作用。方法收集118例轻-中型创伤性脑损伤患者的临床资料和40例正常成人的相关信息,采用聚合酶链反应限制性片段长度多态性法(PCR-RFLP)检测APOE基因型。在伤后1～3 d,对所有创伤性脑损伤患者进行脑电图检测;在清醒、安静、闭目、血糖正常状态下对所有正常成人进行脑电图检测;采集所有研究对象的定量脑电数据。结果40例正常成人中,APOEε2、APOEε3、APOEε4基因型之间定量数据差异均无统计学意义(P=0.097);118例创伤性脑损伤患者中,脑电活动在APOEε2、APOEε3、APOEε4基因型之间差异有统计学意义(P=0.008);与APOEε3携带者比较,APOEε4携带者的慢活动明显增多,而APOEε2携带者的慢活动相对减少。结论携带不同APOE基因的正常成人脑电活动无差异;在颅脑创伤的诱发下,APOE对脑电活动的影响则表现出亚型特异性;APOEε4对颅脑创伤后的脑电活动带来负面影响,APOEε2则对创伤后的脑功能具有保护作用。

Isoform-specific influence of APOE induced by traumatic brain injury on the electrical activity of brain

Objective To investigate whether the isoform-specific influence of apolipoprotein E gene(APOE) on the electrical activity of brain is induced by traumatic brain injury(TBI).Methods The clinical data of 118 patients with mild/moderate traumatic brain injury and 40 normal subjects for control were collected,and the APOE genotyping was performed by means of PCR-RFLP.The electrical activity of brain in every patient was recorded by electroencephalogramy within 3 d after injury and all the subjects for control w...