This study sought to analyze the genotype and gene mutations of human seizure-related gene 6 in 98 patients with idiopathic generalized epilepsy （non-febrile seizures）, who were selected from three generations of th...This study sought to analyze the genotype and gene mutations of human seizure-related gene 6 in 98 patients with idiopathic generalized epilepsy （non-febrile seizures）, who were selected from three generations of the Chinese Han population living in Shanghai, Zhejiang Province, Wuxi of Jiangsu Province, and Jiangxi Province of Southern China. Twenty-six patients＇ parents were available as a first-degree relatives group and 100 biologically unrelated healthy controls were collected as the control group. Based on the age of onset and seizure type, the patients were divided into six subgroups. Polymerase chain reaction and DNA direct sequencing analysis showed that the most frequent mutations c. 1249dupC （p.Gly418Argfx31 ） and c.1636A 〉 G （p.Thr546Ala） were detected in some idiopathic generalized epilepsy patients and tl^eir asymptomatic first-degree relatives （30.6% vs. 19.2% and 11.2% vs. 26.9%）. A novel mutation c.1807G 〉A （p.Val603Met） was found in a patient with late-onset idiopathic generalized epilepsy. There was no significant difference in the incidence of these three mutations among the different subgroups of idiopathic generalized epilepsy and controls. Thus, further analysis of a larger population is needed to confirm the assumption that human seizure-related gene 6 is a susceptibility gene for idiopathic generalized epilepsy with various sub-syndromes.展开更多
遗传性癫痫伴热性惊厥附加症(Genetic epilepsy with febrile seizures plus,GEFS+)是一种新型遗传性癫痫综合征,具有明显的家族遗传史。临床表现常为热性惊厥,其次是热性惊厥附加症及伴或不伴失神发作、局灶性发作及全身强直-阵挛性发...遗传性癫痫伴热性惊厥附加症(Genetic epilepsy with febrile seizures plus,GEFS+)是一种新型遗传性癫痫综合征,具有明显的家族遗传史。临床表现常为热性惊厥,其次是热性惊厥附加症及伴或不伴失神发作、局灶性发作及全身强直-阵挛性发作等。利用聚合酶连反应、外显子测序、单核苷酸多态性分析等技术研究发现,其发生主要与γ-氨基丁酸A型受体的γ2亚基(Gamma aminobutyric acid type A receptor gamma 2 subunit,GABRG2)基因突变有关,但其发病机制仍未阐明。GABRG2突变类型主要有错义突变、无义突变、移码突变、点突变及剪接体位点突变等。其所有类型的突变均会降低细胞膜上相关离子通道的功能,但引起功能障碍的程度和机制并不相同,这可能是致痫的主要机制。文章将重点综述近年来研究发现的该基因突变类型与GEFS+相关性,为辅助临床精确诊断、抗癫痫治疗策略及新药开发具有重要意义。展开更多
基金supported by Shanghai Natural Science Foundation, China, No. ZR1404500
文摘This study sought to analyze the genotype and gene mutations of human seizure-related gene 6 in 98 patients with idiopathic generalized epilepsy （non-febrile seizures）, who were selected from three generations of the Chinese Han population living in Shanghai, Zhejiang Province, Wuxi of Jiangsu Province, and Jiangxi Province of Southern China. Twenty-six patients＇ parents were available as a first-degree relatives group and 100 biologically unrelated healthy controls were collected as the control group. Based on the age of onset and seizure type, the patients were divided into six subgroups. Polymerase chain reaction and DNA direct sequencing analysis showed that the most frequent mutations c. 1249dupC （p.Gly418Argfx31 ） and c.1636A 〉 G （p.Thr546Ala） were detected in some idiopathic generalized epilepsy patients and tl^eir asymptomatic first-degree relatives （30.6% vs. 19.2% and 11.2% vs. 26.9%）. A novel mutation c.1807G 〉A （p.Val603Met） was found in a patient with late-onset idiopathic generalized epilepsy. There was no significant difference in the incidence of these three mutations among the different subgroups of idiopathic generalized epilepsy and controls. Thus, further analysis of a larger population is needed to confirm the assumption that human seizure-related gene 6 is a susceptibility gene for idiopathic generalized epilepsy with various sub-syndromes.
文摘遗传性癫痫伴热性惊厥附加症(Genetic epilepsy with febrile seizures plus,GEFS+)是一种新型遗传性癫痫综合征,具有明显的家族遗传史。临床表现常为热性惊厥,其次是热性惊厥附加症及伴或不伴失神发作、局灶性发作及全身强直-阵挛性发作等。利用聚合酶连反应、外显子测序、单核苷酸多态性分析等技术研究发现,其发生主要与γ-氨基丁酸A型受体的γ2亚基(Gamma aminobutyric acid type A receptor gamma 2 subunit,GABRG2)基因突变有关,但其发病机制仍未阐明。GABRG2突变类型主要有错义突变、无义突变、移码突变、点突变及剪接体位点突变等。其所有类型的突变均会降低细胞膜上相关离子通道的功能,但引起功能障碍的程度和机制并不相同,这可能是致痫的主要机制。文章将重点综述近年来研究发现的该基因突变类型与GEFS+相关性,为辅助临床精确诊断、抗癫痫治疗策略及新药开发具有重要意义。
