title: [Correlation of CD40 gene polymorphisms with acute coronary syndrome, hypertension and diabetes].
abstract: OBJECTIVE
  To investigate the correlation of CD40-E1SNP (-1C/T) and CD40-E4SNP with acute coronary syndrome (ACS), hypertension and diabetes in Chinese Han population.
  
  
  METHODS
  The allele frequencies of CD40-E1SNP (-1C/T) and CD40-E4SNP were assayed by polymerase chain reaction-restriction fragment length polymorphism and DNA sequence technology in 160 definite ACS patients and 92 controls with negatively coronary arteriography. Multivariate logistic regression models were used to analyzed the interaction between the CD40 gene polymorphisms and hypertension and diabetes.
  
  
  RESULTS
  CD40-1C allele frequency of the ACS group was 0.606, significantly higher than that of the control group (0.489, P < 0.01), while the T allele frequency of the ACS group was 0.394, significantly lower than that of the control group (0.511, P < 0.01). The frequency of CC genotype was much higher in the ACS group than in the control group (P < 0.01). C allele increased the risk of ACS (OR = 1.608, 95% CI: 1.12 - 2.32, P = 0.011). After adjustment of confounding variables, such as age, sex, and body mass index, the binary logistic analysis showed a significant gene-environment interaction (P < 0.05). The OR value were: 1.608 for C allele (95% CI: 1.12 - 2.32, P < 0.05), 5.71 for C allele-with hypertension (95% CI: 1.12 - 29.08, P < 0.05), 1.44 for C allele-without diabetes (95% CI: 1.12 - 5.13, P < 0.01), and 2.35 for C allele-with diabetes (95% CI: 1.47 - 4.82, P < 0.01). Expression of CD40-E4SNP was not found in these subjects.
  
  
  CONCLUSIONS
  CD40-1C/T polymorphism is associated with ACS in Chinese people. The -1C allele carriers have higher risk of ACS if they get hypertension or diabetes; CD40-E4SNP may not exist in Chinese people.
authors.affiliation: Department of Clinical Laboratory Science, Renmin Hospital of Wuhan University, Wuhan 430060, China. yanlitf@yahoo.com.cn
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Cai-Xia
authors.initials: CX
authors.lastname: Tian
authors.forename: Ming
authors.initials: M
authors.lastname: Wang
authors.forename: Zun-En
authors.initials: ZE
authors.lastname: Xia
mesh_terms: D054058:Acute Coronary Syndrome / Q000235:genetics*; D000368:Aged; D019013:CD40 Antigens / Q000235:genetics*; D002681:China; D003920:Diabetes Mellitus / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D006973:Hypertension / Q000235:genetics*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide
chemical_list: D019013:CD40 Antigens