Objective To evaluate and compare two definitions for metabolic syndrome(MS)issued by International Diabetes Federation(IDF)and by Chinese Medical Association Diabetes Branch(CDS).Methods An epidemic survey and physical examination were conducted among 481 subjects randomly selected from 3 354 subjects(above 40 years old)by cluster sampling.Results The prevalence rate of MS by IDF or by CDS definition were 40.96% and 38.05%,respectively.Kappa value was 0.51,P0.01).Metabolic disorder ratio for above 3 items by IDF was higher than that of CDS criterion.Conclusion The IDF diagnostic criterion for MS and CDS are in good accordance and applicability.The MS diagnostic criterion of IDF is better at diagnosing centricity obesity than that of CDS.

Objective To explore the difference of serum free fatty acid(FFA) composition between the patients with the metabolic syndrome(MS) and the patients with high risk for MS(HRMS),and the relationship of FFA composition with their serum glucose.Methods The serum fatty acid profile was measured with the gas chromatography and mass spectrometer(GC/MS)in 159 patients with MS or HRMS and 43 control subjects.Results The contents of unsaturated fatty acid(UFA,C18:2 and C20:3),the ratios of UFA/TFA(total fatty acid),PUFA(polyunsaturated fatty acid)/TFA and PUFA/SFA(saturated fatty acid) were significantly increased in patients with MS than those in the normal controls(P0.05).FBG had remarkably positive correlation with UFA/TFA,PUFA/TFA and PUFA/SFA(r=0.229,0.204,0.230,P