Add time:08/20/2019         Source:sciencedirect.com

Cardiovascular disease imposes substantial burdens of morbidity and mortality that increase with population aging. Estimating cardiometabolic risk accurately and expediently is challenging, and no single biomarker is satisfactory; hence, we investigated the potential of serum activin A for this purpose. Study data were collected from 433 community-dwelling adults age ≥53 years from Yilan County, Taiwan. Data included: demographics and medical history; physical measurements (blood pressure, body mass index, waist circumference); comprehensive functional assessments (frailty, cognitive function, depressive symptoms, nutritional status); fasting blood biochemistry (glucose, high-density lipoprotein cholesterol, triglycerides, high-sensitivity C-reactive protein, insulin-like growth factor-1, activin A, stratified into high, medium and low tertiles, and others); and dual-energy X-ray absorptiometry. Metabolic syndrome was considered a proxy for overall cardiometabolic risk. Subjects mean age was 69.3 ± 9.2 years, 48.3% were males. Compared to women, men had higher systolic blood pressure, education levels, relative appendicular skeletal muscle mass, waist circumference, physical activity, walking speed, free androgen index, and levels of serum uric acid, alanine aminotransferase, and dehydroepiandrosterone sulfate. High activin A was significantly associated with age, relative appendicular skeletal muscle mass in both gender, waist circumference in women, current alcohol drinking, hypertension, and Charlson Comorbidity Index. There were dose-dependent relationships (low to high) between serum activin A and frailty, cognitive impairment, malnutrition, metabolic syndrome, uric acid, and high-sensitivity C-reactive protein. Logistic regression analyses showed older age, serum uric acid, and metabolic syndrome were significantly associated with medium and high activin-A status, whereas, skeletal muscle mass, insulin-like growth factor-1 and dehydroepiandrosterone sulphate were associated with high, but not medium, serum activin A. This discovery of a dose-dependent association between serum activin A levels, age, and metabolic syndrome, suggests activin A may be a biomarker of overall cardiometabolic risk; however, further studies are needed to evaluate its potential applications in assessing and managing cardiometabolic risk.

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