Large-scale analysis of association between polymorphisms in the transforming growth factor beta 1 gene (TGFB1) and osteoporosis: The GENOMOS study
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文摘
We measured prevalent fracture status; bone mineral density (BMD) of the whole body, spine, and hip by DXA; QUS of the calcaneus and the patella; hormones and various markers of bone resorption and formation; and took standard blood tests in 124 women (age 64.9 yr ± 7.9) with manifest and variously treated postmenopausal osteoporosis. Subsequently, new spine fractures were assessed after 1 yr and, in a subset of 87 women, after 2 yr.

Prevalent fractures turned out to be the strongest predictor of subsequent vertebral fractures with an age-adjusted odds ratio (OR) of 3.9 per prevalent fracture over 2 yr. Furthermore, our results underline the predictive power of spinal BMD (sOR = 2.1; standardized OR per 1 standard deviation population variance decrease), whole body BMD (sOR: 2.4), and QUS stiffness index of the calcaneus (sOR: 2.8) for vertebral fracture prediction. QUS of the patella did not predict vertebral fractures. Blood sedimentation rate was predictive in the first year (sOR: 1.9). The predictive power of bone turnover markers, however, appeared to be too low to be detectable in a group of this sample size and it may have been reduced because most women were already receiving treatment. In conclusion, radiographic measures, but not the tested laboratory bone turnover markers, enabled us to identify women (from a population of osteoporotic women who have been treated for some time with a variety of medications) who are at highest risk for developing new vertebral fractures within 1–2 yr.


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Who Should Be Screened: Who Should Be Treated?
Osteoporosis (Third Edition)

Who Should Be Screened: Who Should Be Treated?
Osteoporosis (Third Edition)2008, Pages 1449-1460
Michael R. McClung

Abstract

Summary

The availability of therapies documented to prevent bone loss and to reduce fracture risk poses new questions and challenges for clinicians and planners of health policy, including how to select among the various options, whether to use them in combination, and how long they should be used. The most immediate questions, however, are which patients should receive these therapies and how can we best identify these patients? The purpose of managing patients with or at risk for osteoporosis is to reduce the likelihood of fracture, the only consequence of this disorder that affects a patient′s life expectancy, physical function, quality of life, and health care costs. Lifestyle changes such as nutrition, exercise, and avoidance of smoking may slow bone loss. Vitamin D supplements and exercise interventions decrease the frequency of falls in older adults. Supplements of calcium and vitamin D, hip protectors, and bone-strengthening pharmaceutical agents reduce the risk of fracture in certain clinical situations. The indications for these various interventions and both the need for and type of “screening” needed before deciding to intervene differ substantially since the treatments address different risk factors in different populations of patients. Comprehensive discussions about the roles of calcium and vitamin D nutrition, physical activity and exercise, fall prevention strategies, and experience with the use of hip protectors are found elsewhere in this textbook. This discussion focuses on which postmenopausal women should receive pharmacological therapy and strategies to identify these patients because this is where the bulk of evidence exists on which to make recommendations.

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doi:10.1016/j.bone.2007.11.007
Copyright © 2007 Elsevier Inc. All rights reserved.

Large-scale analysis of association between polymorphisms in the transforming growth factor beta 1 gene (TGFB1) and osteoporosis: The GENOMOS study

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