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Longitudinal Changes in BMD and Bone Geometry in a Population-Based Study

Lauretani, Fulvio, Bandinelli, Stefania, Griswold, Michael E, Maggio, Marcello, Semba, Richard, Guralnik, Jack M, Ferrucci, Luigi·2008·Journal of Bone and Mineral Research

Abstract

We prospectively examined vBMD and structural bone parameters assessed by QCT among participants of the InCHIANTI study over a 6-yr follow-up. Periosteal apposition occurred both in men and women. Endocortical resorption causes bone loss in older women despite periosteal apposition. Introduction: To address the hypothesis that age-related changes in BMD and bone geometry may be different in men and women, we prospectively examined volumetric BMD (vBMD) and structural bone parameters assessed by QCT among participants of the InCHIANTI study over a 6-yr follow-up. Materials and Methods: Three hundred forty-five men and 464 women 21–102 yr of age from the InCHIANTI study, a population-based study in Tuscany, Italy, were included. Tibial QCT bone parameters were measured at enrollment (1998–2000) and at 3- (2001–2003) and 6-yr (2004–2006) follow-ups. Results: Periosteal apposition occurred both in men and women. The annual rate of bone periosteal apposition was higher in younger than in older men, whereas in women, the rate of apposition was homogenous across age groups. The age-related medullary expansion, expression of endocortical resorption, was significantly higher in women compared with men. In women, but not in men, accelerated endocortical resorption not sufficiently balanced by periosteal apposition caused accelerated loss in cortical bone mass. The cross-sectional moment of inertia decreased progressively over the life span in both sexes. Conclusions: Endocortical resorption causes bone loss in older women despite periosteal apposition. Obtaining a balance between endocortical resorption and periosteal apposition should be the target for interventions aimed to decrease bone loss and prevent osteoporosis in older women.

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Metadata

Authors
Lauretani, F., Bandinelli, S., Griswold, M. E., Maggio, M., Semba, R., Guralnik, J. M., & Ferrucci, L.
Affiliations
  • Longitudinal Studies Section, Clinical Research Branch, NIA-NIH, Bethesda, Maryland, USA
  • Geriatric Unit, Azienda Sanitaria Firenze, Florence, Italy
  • Johns Hopkins School of Medicine, Baltimore, Maryland, USA
  • Department of Internal Medicine and Biomedical Sciences, Section of Geriatrics, University of Parma, Parma, Italy
  • Laboratory of Epidemiology, Demography and Biometry, NIA-NIH, Bethesda, Maryland, USA
Venue
Journal of Bone and Mineral Research
Published
2008-03-01
Volume
23
Issue
3
Pages
400-408
ISSN
  • 0884-0431
  • 1523-4681
Cited by
110
References
5
Language
en

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