Objective To investigate the correlation between the angiotensin-converting enzyme(ACE)gene insertion/deletion(I/D)polymorphism and cerebrovascular diseases in Naxi population in Lijiang,Yunnan province.Methods Fifty-eight Naxi patients with cerebral infarction,32 Naxi patients with intracerebral hemorrhage,and 50 sex- and age-matched Naxi healthy controls were recruited.Polymerase chain reaction-restricted fragments length polymorphism was used to detect the ACE gene polymorphism and perform bidirectional sequencing Results The DD genotype and the D allele frequency in the cerebral infarction group were significantly higher than those in the healthy control group(32.8% vs.16.0%,P = 0.045 and 54.3% vs.39.0%,P =0.025);while there were no significant differences in the DD genotype and the D allele frequency between the intracerebral hemorrhage group and the control group.The different types of cerebral infarction carried different allele frequencies,they were in order of cerebral embolism ＜ cerebral thrombosis ＜ lacunar infarction.The DD genotype in patients with lacunar infarction(40.0% vs.30.0%,P = 0.481 )and the D allele frequencies(63.3% vs.51.2%,P =0.257)were all higher than those in patients with cerebral thrombosis,but there were no significant differences.Conclusions The ACE DD genotype carriers were susceptible to cerebral infarction in Naxi poulation in Yunan province.

Objective To investigate the correlation between apolipoprotein E (ApoE)polymorphisms and cerebral infarction in Dali Bai populations in Yunnan province.Methods A total of 40 Dali Bai patients with cerebral infarction (female.23,male 17) and 43 Dali Bai normal controls (female 18,male 25) were included in the study.Polymerase chain reactionrestriction fragment length polymorphism (PCR-RFLP) analysis was used to detect APoE genotype,meanwhile the lipid levels were detected,and finally,ApoE gene sequencing was conducted.The correlation between the APoE gene polymorphism and the types of cerebral infarction were further studied.Results The frequencies of genotype ε3/ε4 (22.5% vs.4.7%,P ＜0.05) and ε4 (12.5% vs.3.5%,P ＜0.05) in the Dali Bai cerebral infarction group were significantly higher than those in Dali Bai normal control group,and the frequencies of genotype