Journal of the neurological sciences · 2019
Apolipoprotein E ε4 allele is associated with vascular cognitive impairment no dementia in Chinese population.
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Han Yue, Zhou Aihong, Li Fangyu, Wang Qi, Xu Lingzhi, Jia Jianping
Аннотация
BACKGROUND: The association between apolipoprotein E (APOE) ε4 allele and vascular cognitive impairment no dementia (VCIND) is still controversial.
OBJECTIVE: To examine the relationship between the APOE ε4 allele and patients with VCIND after cerebral infarction.
METHODS: This study included first-ever cerebral infarction patients 3-12 months after the attack at the Xuanwu Hospital between June 2012 and December 2014. Patients were divided into VCIND group and normal cognition group (NC group).The APOE ε4 carriers (including ε2/ε4, ε3/ε4 and ε4/ε4 genotypes) and ε4 allele frequency were analyzed in relation to cognition grouping after cerebral infarction. MRI features of infarctions and some known risk factors for VCIND，as confounding factors, were also analyzed for correlation with VCIND at the same time.
RESULTS: Participants (n = 707) were divided into the VCIND (n = 361) and NC (n = 346) groups. The percentage of APOE ε4 carriers was higher in the VCIND group (23.6%) than in the NC group (12.7%, P < .001).The APOE ε4 allele frequency was higher in the VCIND group (12.5%) than in the NC group (6.7%, P = .001). Regardless of other confounding factors, such as male gender (OR = 1.963, 95%CI: 1.394-2.763, P < .001), age (OR = 1.034, 95%CI: 1.017-1.052, P < .001), education (OR = 0.834, 95%CI: 0.795-0.875, P < .001), hypertension (OR = 2.044, 95%CI: 1.460-2.861, P < .001), hyperlipidemia (OR = 0.682, 95%CI: 0.482-0.965, P = .031), infarction lesion diameter (OR = 1.044, 95%CI: 1.017-1.072, P = .001) and white matter lesions (OR = 1.330, 95%CI: 1.126-1.571, P = .001), the APOE ε4 allele was independently associated with VCIND (OR = 2.244, 95%CI: 1.454-3.463, P < .001).
CONCLUSION: These results confirms the hypothesis that the APOE ε4 allele is a risk factor associated with VCIND after cerebral infarction.
OBJECTIVE: To examine the relationship between the APOE ε4 allele and patients with VCIND after cerebral infarction.
METHODS: This study included first-ever cerebral infarction patients 3-12 months after the attack at the Xuanwu Hospital between June 2012 and December 2014. Patients were divided into VCIND group and normal cognition group (NC group).The APOE ε4 carriers (including ε2/ε4, ε3/ε4 and ε4/ε4 genotypes) and ε4 allele frequency were analyzed in relation to cognition grouping after cerebral infarction. MRI features of infarctions and some known risk factors for VCIND，as confounding factors, were also analyzed for correlation with VCIND at the same time.
RESULTS: Participants (n = 707) were divided into the VCIND (n = 361) and NC (n = 346) groups. The percentage of APOE ε4 carriers was higher in the VCIND group (23.6%) than in the NC group (12.7%, P < .001).The APOE ε4 allele frequency was higher in the VCIND group (12.5%) than in the NC group (6.7%, P = .001). Regardless of other confounding factors, such as male gender (OR = 1.963, 95%CI: 1.394-2.763, P < .001), age (OR = 1.034, 95%CI: 1.017-1.052, P < .001), education (OR = 0.834, 95%CI: 0.795-0.875, P < .001), hypertension (OR = 2.044, 95%CI: 1.460-2.861, P < .001), hyperlipidemia (OR = 0.682, 95%CI: 0.482-0.965, P = .031), infarction lesion diameter (OR = 1.044, 95%CI: 1.017-1.072, P = .001) and white matter lesions (OR = 1.330, 95%CI: 1.126-1.571, P = .001), the APOE ε4 allele was independently associated with VCIND (OR = 2.244, 95%CI: 1.454-3.463, P < .001).
CONCLUSION: These results confirms the hypothesis that the APOE ε4 allele is a risk factor associated with VCIND after cerebral infarction.