title: Differences between measurements of bone mineral densities by quantitative ultrasound and dual-energy X-ray absorptiometry in type 2 diabetic postmenopausal women.
abstract: BACKGROUND
  Quantitative ultrasound (QUS) may be more helpful than dual-energy X-ray absorptiometry (DXA) in detecting bone deficits in patients with type 2 diabetes mellitus (T2DM).
  
  
  OBJECTIVE
  The objective of the study was to compare differences in bone mass measurement by DXA and QUS in T2DM and nondiabetic postmenopausal women.
  
  
  METHODS
  This clinical investigation was a cross-sectional study in 76 patients with T2DM and 86 nondiabetic postmenopausal women.
  
  
  METHODS
  The primary outcomes were speed of sound (SOS) at the radius, phalanx, and tibia measured by QUS and bone mineral density (BMD) at the lumbar spine (LS), femoral neck (FN), and total hip (TH) measured by DXA.
  
  
  RESULTS
  BMDs in T2DM patients were higher (LS, 1.06 +/- 0.12 vs. 0.90 +/- 0.23 g/cm(2); FN, 0.80 +/- 0.13 vs. 0.74 +/- 0.12 g/cm(2); TH, 0.87 +/- 0.14 vs. 0.80 +/- 0.13 g/cm(2), respectively, P < 0.001), whereas SOSs were lower than those in nondiabetics (radius, 4044 +/- 178 vs. 4129 +/- 182 m/sec; phalanx, 3902 +/- 207 vs. 3999 +/- 214 m/sec, respectively, P < 0.001). The positive relationships between SOS and BMD (r = 0.26-0.75, P < 0.05) in nondiabetics were not observed in women with T2DM. T2DM impacted negatively on SOSs (radius, beta= -0.223, P <0.01; phalanx, beta= -0.219, P <0.01) but positively on BMDs (LS, beta = 0.314, P < 0.001; FN, beta = 0.173, P < 0.05; TH, beta = 0.203, P <0.01).
  
  
  CONCLUSIONS
  Differences in bone mass as measured by DXA and QUS in postmenopausal T2DM and nondiabetic women do not change in parallel. QUS can provide useful information in the skeletal assessment of patients with T2DM.
authors.affiliation: Department of Endocrine and Metabolic Diseases, Shanghai Rui-jin Hospital, affiliated with Shanghai Jiao-tong University School of Medicine, 197 Ruijin Er Road, Shanghai, China.
authors.forename: Bei
authors.initials: B
authors.lastname: Tao
authors.forename: Jian-Min
authors.initials: JM
authors.lastname: Liu
authors.forename: Hong-Yan
authors.initials: HY
authors.lastname: Zhao
authors.forename: Li-Hao
authors.initials: LH
authors.lastname: Sun
authors.forename: Wei-Qing
authors.initials: WQ
authors.lastname: Wang
authors.forename: Xiao-Ying
authors.initials: XY
authors.lastname: Li
authors.forename: Guang
authors.initials: G
authors.lastname: Ning
mesh_terms: D015502:Absorptiometry, Photon / Q000379:methods*; D015992:Body Mass Index; D015519:Bone Density; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D003430:Cross-Sectional Studies; D003924:Diabetes Mellitus, Type 2 / Q000378:metabolism*; D005260:Female; D006801:Humans; D017698:Postmenopause; D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic / Q000502:physiology; D012044:Regression Analysis; D014463:Ultrasonography
chemical_list: D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic