Lean body mass and creatine kinase are associated with reduced inflammation in obesity.
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BACKGROUND
Obesity is associated with inflammation, but the role of lean mass and creatine kinase (CK) on the inflammatory process is less known. We investigated the associations between lean mass, CK and fat mass upon inflammatory parameters in an overweight and obese adult population.
METHODS
Body composition examined by dual-energy X-ray absorptiometry, high-sensitivity C-reactive protein (hs-CRP), erythrocyte sedimentation rate (ESR), CK and supplementary clinical parameters were measured in 454 overweight and obese individuals. This is a secondary analysis from a cohort of obese individuals treated with Vitamin D.
RESULTS
Mean age was 47·6 ± 11·4 years and mean body mass index 34·6 ± 3·9 kg/m2 . Lean mass correlated negatively with hs-CRP (r = -0·127, P = 0·042) and ESR (r = -0·381, P < 0·001). Median lean mass in the lower ESR quartile was significantly higher than in the upper quartile (P < 0·001) but not between lower and upper hs-CRP quartiles (P = 0·114). CK was negatively correlated with hs-CRP (r = -0·151, P < 0·001) and ESR (r = -0·240, P < 0·001). Median CK in the lower hs-CRP and ESR quartiles were significantly higher than in the upper quartiles (P < 0·001 for both). Conversely, fat mass was positively associated with hs-CRP and ESR.
CONCLUSIONS
Inflammatory parameters were related to reduced lean mass and CK in an overweight and obese population. Hypothetically, lean mass has a favourable effect on obesity-related inflammation, and CK may play a role as an inhibitor of inflammation in obesity.
