Circulating sclerostin associated with vertebral bone marrow fat in older men but not women

Yu Heng Vivian Ma, Ann V. Schwartz, Sigurdur Sigurdsson, Trisha F. Hue, Thomas F. Lang, Tamara B. Harris, Clifford J. Rosen, Eric Vittinghoff, Gudny Eiriksdottir, Alda M. Hauksdottir, Kristin Siggeirsdottir, Gunnar Sigurdsson, Diana Oskarsdottir, Nicola Napoli, Lisa Palermo, Vilmundur Gudnason, Xiaojuan Li

Research output: Contribution to journalArticlepeer-review

Abstract

Context: Osteocyte activity is crucial to the maintenance of bone quality. Sclerostin, an osteocyte product, inhibits bone formation, yet higher circulating sclerostin is associated with higher bone density. Bone marrow fat (MF) is associated with osteoporosis, but little is known about the relationship between osteocyte activity and MF. Objective: Our objective was to assess the relationships between circulating sclerostin, vertebral MF, volumetric bone mineral density (vBMD), and other fat depots in older adults. Design, Setting, and Participants: We conducted a cross-sectional study in the Age Gene/Environment Susceptibility-Reykjavik cohort. Main Outcome Measures: Outcome measures included vertebral MF (L1-L4) measured with magnetic resonance spectroscopy and vBMD (spine and hip) and abdominal fat measured with quantitative computed tomography. Results: After excluding subjects with bone-active medication use (n = 50), inadequate serum (n = 2), or inadequate magnetic resonance spectroscopy (n = 1), analyses included 115 men and 134 women (mean age 79 y, mean body mass index 27.7 kg/m2). In men, but not women, vertebral MF was greater in those with higher serum sclerostin levels. MF was 52.2 % in the lowest tertile of serum sclerostin and 56.3% in the highest tertile in men (P for trend

Original languageEnglish
Pages (from-to)E2584-E2590
JournalJournal of Clinical Endocrinology and Metabolism
Volume99
Issue number12
DOIs
Publication statusPublished - Dec 1 2014

ASJC Scopus subject areas

  • Biochemistry
  • Clinical Biochemistry
  • Endocrinology
  • Biochemistry, medical
  • Endocrinology, Diabetes and Metabolism

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