Study on relations between cystatin C and its polymorphism and metabolic syndrome in Zhuang population of Guangxi district / 国际检验医学杂志

ABSTRACT

Objective To investigate the correlation of cystatin C(Cys C) serum level and its gene polymorphism among Zhuang population with Metabolic Syndrome(MS) of Guangxi district.Methods The levels of serum Cys C in Zhuang MS patients,Han MS patients,Zhuang normal people and Han normal people(each of 100 cases)were detected by Immunoturbidimetric Assays.Cys C +148,Cys C+73 and Cys C-82 genotyping were conducted by using PCR-RFLP.Results The clinical data and serum Cys C levels of four groups were significantly different(P＜0.05),The clinical data and serum Cys C levels of two CHD groups were significantly different from those in the two normal groups(P＜0.05);(2) There was a positive correlation between Cys C levels and creatinine(Cr) level in peripheral blood(r=0.551,P=0.000);(3) There was no significant difference in the genotype frequencies of Cys C+73,Cys C+ 148 and Cys C-82 in 4 groups(x2 =3.139,0.791;x2 =4.841,P=0.564;x2 =3.207,P=0.782);(4)Cys C level in MS patients of Cys C+73 GG genotype was significantly lower than that of AG and AA genotype,and the difference was statistically significant (P ＜ 0.05).But there was no significant difference in Cys C level between AG type and AA type.Conclusion The high level of Cys C caused by impaired renal function may be a risk factor for MS patients in Zhuang and Han population in Guangxi.Cys C+73 locus gene polymorphism and the relationship between MS patients in Guangxi Zhuang population need further study.