Abstract
While inflammation is associated with obesity and insulin resistance, their inter-relationships in the development of type 2 diabetes or hypertension are not clear. To evaluate inflammatory markers in prediction of type 2 diabetes and hypertension. The study population of this retrospective cohort study consisted of individuals who participated in a comprehensive health screening program with measurement of white blood cell count and C-reactive protein from 2002-2010 (N=96,606) in nondiabetic and normotensive Koreans. Median follow up time were 3.7years for incident type 2 diabetes and 3.3years for hypertension. Multivariate Cox proportional hazards models were performed to assess risk for type 2 diabetes or hypertension by white blood cell or C-reactive protein quartiles with adjustment of various possible confounding factors including insulin resistance. During the follow-up period, 1448 (1.5%) developed type 2 diabetes and 10,405 (10.8%) developed hypertension. Among men, comparison of adjusted hazard ratios (HR) for incident type 2 diabetes in the highest versus lowest white blood cell or C-reactive protein quartiles were 1.48 [95% confidence interval (CI), 1.20-1.83] and 1.30 (95% CI, 1.07-1.57), respectively. Among women, white blood cell but not C-reactive protein was significantly associated with type 2 diabetes [HR 1.79 (95% CI 1.24-2.57)]. White blood cell and C-reactive protein quartiles were also modestly associated with incident hypertension in both sexes. Although white blood cell and C-reactive protein are associated with adiposity and insulin resistance, these inflammatory markers also independently predict type 2 diabetes and/or hypertension.
Published Version
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