Abstract
Chemerin is an adipokine that may mediate the link between obesity, inflammation, insulin resistance, type 2 diabetes mellitus, and cardiovascular disease. In this study, we examined the association between chemerin and various cardiometabolic risk factors in cross-sectional setting and tested the hypothesis that a 6-month combined exercise program decreases serum chemerin in overweight or obese, non-diabetic individuals. Serum chemerin concentration was measured in a cross-sectional analysis including 98 individuals with a wide range of age and body mass index (BMI). In addition, chemerin was measured in 79 sedentary, overweight or obese, non-diabetic individuals who completed a 6-month combined endurance and resistance exercise program (CEP, n = 51) or served as controls (C, n = 28). Chemerin was significantly associated with total cholesterol (p = 0.04), triglycerides (p < 0.001), fasting insulin (p < 0.001), homeostasis model assessment of insulin resistance (HOMA-IR, p < 0.001), systolic blood pressure (p = 0.04), highly sensitive C-reactive protein (p = 0.03), leucocytes count (p = 0.047), and leptin (p = 0.008) independently of age and BMI. In multiple regression analysis, chemerin was an independent determinant of HOMA-IR. As a result of the 6-month training program, serum chemerin decreased significantly in CEP group (−13.8 ± 13.2 ng/ml, p < 0.001). A significant association between the changes in chemerin and improved HOMA-IR were found even after adjustment for changes in waist circumference. Among non-diabetic individuals serum chemerin was associated with various cardiometabolic risk factors independently of BMI. In addition, the 6-month combined strength and endurance training program led to a significant reduction in circulating chemerin levels in overweight or obese individuals.
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Acknowledgments
The authors would like to thank all study participants and Daniela Kox, Manuela Prellberg, and Susan Berthold for their technical assistance.
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The authors declare that they have no conflict of interest.
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The authors of the current manuscript declare that all the experiments comply with the current laws of the country in which they were performed (Bulgaria). The study conforms to the principles outlined in the Declaration of Helsinki. The study protocol was approved by the Institutional Review Board of the National Sports Academy, Sofia, Bulgaria and all subjects gave their written informed consent prior to participation.
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Stefanov, T., Blüher, M., Vekova, A. et al. Circulating chemerin decreases in response to a combined strength and endurance training. Endocrine 45, 382–391 (2014). https://doi.org/10.1007/s12020-013-0003-2
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DOI: https://doi.org/10.1007/s12020-013-0003-2