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  • Title: [The association of apolipoprotein B gene polymorphism with cerebral infarction with positive family history and its effect on plasma lipid levels].
    Author: Liu BQ, Zhang L, Yang QD, Liu YH, Hu ZY, Xu HW, DU XP, Xia J.
    Journal: Zhonghua Yi Xue Za Zhi; 2008 Dec 23; 88(47):3332-6. PubMed ID: 19257963.
    Abstract:
    OBJECTIVE: To explore the relationship between apolipoprotein B (apoB) gene G12669A polymorphism and cerebral infarction with family history, and to evaluate the effect of G12669A polymorphism on plasma lipid levels. METHODS: Peripheral blood samples were collected from 147 members of 15 cerebral infarction families, including 47 cerebral infarction patients with positive family history (CIFH-P), 43 first-degree relatives (CIFH-I), 28 second-degree relatives (CIFH-II), and 29 third-degree relatives (CIFH-III), 83 sporadic cerebral infarction (SCI) patients, and 100 healthy controls. Polymerase chain reaction- restriction fragment length polymorphism was used to detect the apoB gene G12669A polymorphism. Oxidase method was used to detect the levels of triglyceride (TG), total cholesterol (TC), high-density lipoprotein (HDL), and low-density lipoprotein (LDL). The serum levels of lipoprotein (a) [LP (a)], apoB-100, and apoAI were determined by immune method. RESULTS: (1) The frequencies of A allele in the CIFH-P, CIFH-I, CIFH-II, CIFH-III, and SCI groups patients and control group were 0.106, 0.081, 0.036, 0.034, 0.090, and 0.045 respectively, that of the CIFH-P group being significantly higher than that of the control group (P < 0.05), and those of the CIFH-I, CIFH-II, CIFH-III, and SCI groups not being significantly different from that of the control group. (2) In both CIFH-P and SCI groups, the TC and LDL-C levels of the patients with G/A gene type were significantly higher than those of the G/G gene type, while the HDL-C level of the patients with G/A gene type was significantly lower than that of the G/G gene type (all P < 0.05). CONCLUSION: A allele in G12669A polymorphism may be one of the genetic factors influencing the susceptibility to CI in the individuals with a positive family history, and it may play its role through its influence on the blood lipid levels.
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