Fetuin-A and Change in Body Composition in Older Persons JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM Ix, J. H., Wassel, C. L., Chertow, G. M., Koster, A., Johnson, K. C., Tylavsky, F. A., Cauley, J. A., Cummings, S. R., Harris, T. B., Shlipak, M. G. 2009; 94 (11): 4492-4498


Fetuin-A inhibits the insulin receptor in vitro. Higher serum fetuin-A concentrations are associated with type 2 diabetes longitudinally and greater adiposity in cross-sectional analyses. Whether higher fetuin-A concentrations are associated with accumulation of adiposity over time is unknown.To determine the association of fetuin-A levels with changes in body composition over 5 yr.Observational cohort study nested in the Health Aging and Body Composition Study.Serum fetuin-A levels.Visceral adipose tissue (VAT), abdominal sc adipose tissue, and thigh muscle area by computed tomography, and waist circumference and body mass index were measured at baseline and again after 5 yr. Percent change and extreme change (>1.5 sds) in each measure were calculated.Over 5 yr, subjects lost body mass in each measure, including 6% decline in VAT. Yet each sd (0.42 g/liter) higher fetuin-A concentration was associated with a 5.5% increase in VAT over 5 yr (95% confidence interval 1.9-9.2%; P = 0.003) in models adjusted for age, sex, race, clinical site, diabetes, physical activity, triglycerides, kidney function, and the baseline VAT score. Similarly, higher fetuin-A concentrations were associated with extreme VAT gain (relative risk 1.70, 95% confidence interval 1.12-2.60, P = 0.01). Fetuin-A concentrations were not statistically significant associated with change in any other measures of body composition (P > 0.20).Higher fetuin-A concentrations are associated with the accumulation of VAT in well-functioning, community-living older persons. The mechanisms linking fetuin-A, VAT, and insulin resistance remain to be determined.

View details for DOI 10.1210/jc.2009-0916

View details for Web of Science ID 000271470800048

View details for PubMedID 19820014

View details for PubMedCentralID PMC2775641