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Does osteoprotegerin or receptor activator of nuclear factor-kappaB ligand mediate the association between bone and

Ludmila N Bakhireva1, Gail A Laughlin, Ricki Bettencourt

  • 1Division of Pharmacy Practice, College of Pharmacy, and Department of Family and Preventive Medicine, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.

The Journal of Clinical Endocrinology and Metabolism
|March 6, 2008
PubMed

Insights

Osteoprotegerin (OPG) and RANKL do not explain the link between bone mineral density (BMD) and coronary artery calcification (CAC) in postmenopausal women on hormone therapy.

Area of Science:

  • Endocrinology
  • Cardiovascular Health
  • Bone Metabolism

Background:

  • Emerging evidence suggests a link between vascular and bone mineralization.
  • The precise mechanisms underlying this association remain unclear.
  • Understanding this relationship is crucial for postmenopausal women's health.

Purpose of the Study:

  • To investigate if osteoprotegerin (OPG) or receptor activator of nuclear factor-kappaB ligand (RANKL) mediate the inverse association between bone mineral density (BMD) and coronary artery calcification (CAC).
  • To examine this relationship in postmenopausal women undergoing estrogen therapy.

Main Methods:

  • Study included 92 postmenopausal women (aged 58-81) on estrogen therapy.
  • Bone mineral density (BMD) assessed via dual-energy x-ray absorptiometry.
  • Coronary artery calcification (CAC) measured by electron-beam computed tomography; serum OPG and RANKL levels analyzed.

Main Results:

  • Higher OPG levels were initially observed in women with some CAC, but this difference was not significant after adjustments.
  • Increased hip BMD was independently associated with significantly lower odds of having CAC.
  • Osteoprotegerin (OPG) and RANKL did not significantly alter the bone mineral density (BMD)-coronary artery calcification (CAC) association.

Conclusions:

  • Serum OPG and RANKL do not mediate the association between bone mineral density (BMD) and coronary artery calcification (CAC).
  • The study did not find evidence for OPG or RANKL as effect modifiers in this context.
  • Further research is needed to elucidate the mechanisms linking bone and vascular health.
Abstract

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