| Objective:This study was designed to investigate an association of this polymorphism with EH and healthy subjects in chinese-korean and han peaple in yanbian area, and discuss if there are differences in nations which Chinese-korean and han people, according to the polymorphism of the MTHFR677C/T genotype.Methods:The distribution of168cases group and187control group in MTHFR C677T gene polymorphism were taken by DNA sequencing with Chain Termination Method. Then compared genotype frequencies and distribution of MTHFR677C/T used the statistical analysis.Result:(1) In168cases group the distribution of MTHFR677C/T gene polymorphism, CCã€CT and TT is71ã€70ã€27, respectively; In187control group the distribution of MTHFR677C/T gene polymorphism, CCã€CT and TT is98ã€56ã€33. Compared the Clinical data Between the two groups, found that in case group the level of BMI and HCY are higher than control group (P<0.01), TG and HDL-C also has Statistical difference (P<0.05)(2) We found the CT genotype was41.6%and29.9%, compared between the case group and control group, and there was Statistical difference (P<0.05).The prevalence, that people with CT Genotype is higher than CC genotype.(3) Compared the two groups in han people, we found that there was differences in statistical (P<0.05)。The prevalence, that people with CT Genotype and CT/TT genotype is higher than CC genotype. Compared the two groups in Chinese-korean people,we found that there was no differences in statistical (P>0.05). conclusion:(1) MTHFR677C/T gene polymorphism is an independent risk factor for EH in YanBian area.(2) MTHFR677C/T gene polymorphism is a risk factor in chinese han people, but not in Chinese-korean.(3) There was difference in nations of yanbian area between han people and Chinese-korean. |