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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Association of serum bone morphogenetic protein 4 levels with obesity and metabolic syndrome in non-diabetic individuals.
Endocrine Journal 2011
Bone morphogenetic protein 4 (BMP-4) is involved in the earliest stages of adipocyte differentiation and is recognized as an adipogenic factor for white adipose tissue. The association of serum BMP-4 levels with anthropometric and metabolic parameters has not been previously studied. We aimed to explore the relationship of serum BMP-4 levels with obesity and metabolic syndrome. Serum BMP-4 levels were measured in 104 non-diabetic individuals from the Chungju Metabolic Disease Cohort Study. Anthropometric measurements and components of metabolic syndrome were assessed in all patients. Serum BMP-4 levels were significantly increased in individuals with obesity or metabolic syndrome. After adjusting for age and gender, serum BMP-4 levels were positively correlated with body mass index, waist circumference (WC), waist-to-hip ratio, fasting plasma insulin, homeostasis model assessment index, and triglycerides and were negatively correlated with high-density lipoprotein (HDL) cholesterol. Among these parameters, WC and HDL cholesterol were found to be independent contributing factors for serum BMP-4 levels. Serum BMP-4 levels were also significantly higher in subjects with positive diagnostic criteria for each component of metabolic syndrome. The area under the receiver operating characteristic curve for BMP-4 was 0.661 (P = 0.022, 95% CI = 0.528 to 0.794) and the cut-off value was 2.84 pg/mL. This is the first demonstration that serum BMP-4 levels are associated with adiposity, insulin resistance, and the presence of metabolic syndrome. Whether BMP-4 may be involved in the pathogenesis of obesity and metabolic syndrome deserves further investigation.
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