Association of sarcopenic obesity with higher serum high-sensitivity c-reactive protein levels in Chinese older males - A community-based study (Taichung Community Health Study-Elderly, TCHS-E)

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Abstract

The prevalence of obesity and sarcopenia is high among the elderly. The simultaneous occurrence of these two disorders results in sarcopenic obesity. Research suggests that inflammation has an important role in the pathogenesis of obesity and sarcopenia. This study explores the impact of sarcopenic obesity on inflammatory markers, including interleukin- 6 (IL-6), high-sensitivity C-reactive protein (hs-CRP), and tumor necrosis factoralpha (TNF-α). This study is a community-based cross-sectional study. The study sample consisted of 844 community-dwelling people aged 65 years and older (448 men and 396 women). Sarcopenia was characterized by low muscle mass (skeletal muscle index < 6.87 and 5.46 kg/m<sup>2</sup> for men and women, respectively), and obesity was characterized by excess body fat (body fat percentage greater than the 60th percentile of the study sample by sex [27.82% in men and 37.61% in women]). Older individuals identified with sarcopenic obesity were those who had both sarcopenia and obesity. Inflammatory markers such as IL- 6, hs-CRP, and TNF-α were measured. The prevalence rates of obesity only, sarcopenia only, and sarcopenic obesity were 32.94%, 11.85%, and 7.23%, respectively. No difference was observed in the serum levels of IL-6 and TNF-α among the four groups of combined sarcopenia and obesity status. After multivariate adjustment, the serum hs-CRP levels in the obesity only and in the sarcopenic obesity groups were 0.14 and 0.16 mg/dL among males, respectively, which were significantly higher than that in the normal group (P=0.012 and 0.036). Our results provide evidence that obesity and sarcopenic obesity are associated with increased levels of serum hs-CRP among males. Copyright:

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Yang, C. W., Li, C. I., Li, T. C., Liu, C. S., Lin, C. H., Lin, W. Y., & Lin, C. C. (2015). Association of sarcopenic obesity with higher serum high-sensitivity c-reactive protein levels in Chinese older males - A community-based study (Taichung Community Health Study-Elderly, TCHS-E). PLoS ONE, 10(7). https://doi.org/10.1371/journal.pone.0132908

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