A comparison of the ratios of C-reactive protein and triglycerides to high-density lipoprotein-cholesterol as biomarkers of metabolic syndrome in African Americans and non-Hispanic Whites

Abstract

AimsThe ratio of triglycerides (TG) to high density lipoprotein–cholesterol (HDL-C) is a validated biomarker of insulin resistance and metabolic syndrome (MetS). In African–Americans (AA) there is concern about this ratio because their mean TG level is lower than the general population. As an alternative approach, we examined the CRP:HDL-C ratio in both AA and non-Hispanic whites (NHW) in the NHANES study for its association with MetS. MethodsA total of n = 3541 individuals were studied from the NHANES data. Fasting blood samples were obtained for lipids, insulin, and CRP. TG and CRP ratios to HDL-C were calculated. ResultsThe TG:HDL-C ratio was significantly increased in NHW compared to AA, but the CRP:HDL-C ratio did not differ between NHW and AA groups. Both ratios were significantly increased in MetS patients versus controls (both races) and increased with greater severity of MetS. Receiver Operating Characteristic (ROC) curve analysis showed that the TG:HDL-C area under the curve was superior to CRP:HDL-C in predicting MetS in both AA and NHW patients. ConclusionIn this large NHANES study, the TG:HDL-C ratio is a superior predictor of MetS in both AA and NHW persons despite the lower TG levels in AA persons.