Interactions between Serum Adipokines and Osteocalcin in Older Patients with Hip Fracture. (22nd February 2012)

• Record Type: Journal Article
• Authors: Fisher, Alexander; Srikusalanukul, Wichat; Davis, Michael; Smith, Paul
• Other Names: Cai Huan Academic Editor.
• Is Part Of: International journal of endocrinology. Volume 2012(2012)
• Publication Date: 2012-02-22
• Subjects: Endocrinology -- Periodicals; Endocrinology; Endocrinology -- Periodicals; Endocrine System Diseases -- Periodicals; Periodicals; 616.4
• DOI: 10.1155/2012/684323
• Languages: English
• ISSNs: 1687-8337

Abstract

Abstract : Introduction . Experiments on genetically modified animals have discovered a complex cross-regulation between adipokines (leptin, adiponectin) and osteocalcin. The relationships between these molecules in human osteoporosis are still unclear. We evaluated the hypothesis of a bidirectional link between adipokines and osteocalcin. Materials and Methods . In a cross-sectional study of 294 older patients with osteoporotic hip fracture, we estimated serum concentrations of leptin, adiponectin, resistin, osteocalcin, parameters of mineral metabolism, and renal function. Results . After adjustment for multiple potential confounders, serum osteocalcin concentration was inversely associated with resistin and positively with leptin, leptin/resistin ratio, and adiponectin/resistin ratio. In multivariate regression models, osteocalcin was an independent predictor of serum leptin, resistin, leptin/resistin, and adiponectin/resistin ratios. Conclusions . Our data support the bidirectional regulation between osteocalcin and adipokines, but contrary to the genetically modified animal models, in older subjects with osteoporotic hip fracture, serum osteocalcin is positively associated with leptin and inversely with resistin.