title: Relationships between serum adiponectin, apelin, leptin, resistin, visfatin levels and bone mineral density, and bone biochemical markers in post-menopausal Chinese women.
abstract: BACKGROUND
  Adiponectin, apelin, leptin, resistin, and visfatin, as the main circulating peptides secreted by adipose tissue, are potential contributors to bone metabolism. However, their association with bone mineral density (BMD) is unclear.
  
  
  OBJECTIVE
  The present study investigated whether these serum adipocytokines levels are associated with BMD and bone turnover markers.
  
  
  METHODS
  Serum adiponectin, apelin, leptin, resistin, visfatin levels, bone turnover biochemical markers, and BMD were determined in 336 post-menopausal Chinese women (41-81 yr old).
  
  
  RESULTS
  Adiponectin was negatively correlated with fat mass, while leptin had a positive correlation. In the multiple linear stepwise regression analysis, years since menopause, lean mass, estradiol, and adiponectin, but not fat mass, apelin, leptin, resistin, and visfatin, were independent predictors of BMD. The significant positive correlations between adiponectin and bone-specific alkaline phosphatase, bone crosslinked N-telopeptides of type I collagen were found.
  
  
  CONCLUSIONS
  Adiponectin was an independent predictor of BMD in post-menopausal Chinese women, and positively correlated with bone turnover biochemical markers. It suggested that adiponectin may exert a negative effect on bone mass by promoting excessive bone resorption associated with bone loss in post-menopausal women.
authors.affiliation: Institute of Endocrinology and Metabolism, The Second Xiangya Hospital of Central South University, 139# Middle Renmin Road, Changsha, Hunan 410011, PR China.
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: H
authors.initials: H
authors.lastname: Xie
authors.forename: Q
authors.initials: Q
authors.lastname: Zhao
authors.forename: G-Q
authors.initials: GQ
authors.lastname: Xie
authors.forename: X-P
authors.initials: XP
authors.lastname: Wu
authors.forename: E-Y
authors.initials: EY
authors.lastname: Liao
authors.forename: X-H
authors.initials: XH
authors.lastname: Luo
mesh_terms: D052242:Adiponectin / Q000097:blood; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000073861:Apelin; D044466:Asian People / Q000706:statistics & numerical data; D015415:Biomarkers / Q000097:blood; D015519:Bone Density / Q000502:physiology; D001842:Bone and Bones / Q000378:metabolism; D016207:Cytokines / Q000097:blood*; D005260:Female; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins / Q000097:blood*; D020738:Leptin / Q000097:blood*; D008875:Middle Aged; D054409:Nicotinamide Phosphoribosyltransferase / Q000097:blood*; D017698:Postmenopause / Q000097:blood* / Q000378:metabolism; D052243:Resistin / Q000097:blood*
chemical_list: C499918:ADIPOQ protein, human; C115436:APLN protein, human; D052242:Adiponectin; D000073861:Apelin; D015415:Biomarkers; D016207:Cytokines; D036341:Intercellular Signaling Peptides and Proteins; D020738:Leptin; C499624:RETN protein, human; D052243:Resistin; D054409:Nicotinamide Phosphoribosyltransferase; C085455:nicotinamide phosphoribosyltransferase, human