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26 February 2018 : Clinical Research  

Association of APOE Gene Polymorphisms with Cerebral Infarction in the Chinese Population

Zhixiong Zhong12BCDEFG, Heming Wu23BCDEF, Min Ye4BCDEF, Yuxian Yang5BCDEF, Weixiong Luo6BCDEF, Yanli Wu23BCD, Hesen Wu23BCD, Miaocai Zhong23BCD, Pingsen Zhao23ABCDEFG*

DOI: 10.12659/MSM.905979

Med Sci Monit 2018; 24: CLR1171-1177

Abstract

BACKGROUND: Apolipoprotein E (ApoE) is a multifunctional protein that plays an important role in lipoprotein metabolism. However, the relationship between APOE gene polymorphisms and cerebral infarction in the Chinese population remains unclear. Therefore, we studied the role of APOE gene polymorphisms in patients with cerebral infarction in a Chinese population.

MATERIAL AND METHODS: This study involved 906 patients with cerebral infarction and 1,141 individuals without cerebral infarction who served as controls. APOE genotypes were identified in all participants who participated in the study. Factors influencing cerebral infarction were also analyzed.

RESULTS: Statistically significant variances in the distribution and frequencies of the APOE genotypes in the patients were observed (ε2/ε3 versus ε2/ε4 versus ε3/ε3=22.85% versus 7.62% versus 56.95%) and controls (ε2/ε3 versus ε2/ε4 versus ε3/ε3=17.27% versus 2.72% versus 66.87%; p<0.001). Univariate analysis showed that the APOE ε3/ε3 genotype [OR, 0.393 (95% CI, 0.237–0.653); p<0.001] and ε3/ε4 genotype [OR, 0.376 (95% CI 0.221–0.637); p<0.001] played a protective role against cerebral infarction in Chinese men.

CONCLUSIONS: Statistically significant variances in the distribution and frequencies of the APOE genotypes of the patients and controls were observed. The study demonstrated that the APOE ε3/ε3 and ε3/ε4 genotypes played a protective role against cerebral infarction in Chinese men, but not women. Additionally, the ε2/ε4 genotype may be a potential risk factor in men, whereas ε3/ε4 genotype may play a potential protective role against this disease in women.

Keywords: Apolipoproteins E, cerebral infarction, China, Polymorphism, Genetic

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750