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Drug insight: Existing and emerging therapies for osteoporosis
Jean E Mulder1, Nikheel S Kolatkar, Meryl S LeBoff
1Harvard Medical School, and Brigham and Women's Hospital, Boston, MA 02115, USA. jmulder@partners.org
Abstract:
Osteoporosis is a major public health problem that is characterized by microarchitectural deterioration, low bone mass, and increased risk of fractures. Currently, many women and men affected with this disease are not diagnosed or treated. As osteoporosis is often clinically silent, risk-factor assessment and measurement of BMD are needed to identify those who may benefit from osteoporosis therapy. Although adequate daily intake of calcium and vitamin D, and regular weight-bearing exercise are important for skeletal health, they are not adequate treatments for individuals with osteoporosis. Therapies approved for treatment and/or prevention of osteoporosis in the United States include oral bisphosphonates (alendronate, ibandronate and risedronate), calcitonin, estrogens, teriparatide (parathyroid hormone fragment [1-34]), and raloxifene. For most patients, oral bisphosphonates are the treatment of choice, given the large-scale randomized-trial data demonstrating efficacy in fracture reduction, although bisphosphonates that reduce spine and nonspine fractures (e.g. alendronate and risedronate) are preferred. For high-risk patients (those with very low bone density, or with fractures), teriparatide therapy for 2 years should be considered. The treatment paradigm for osteoporosis will evolve further as promising new treatments progress through clinical development.
Insights
Osteoporosis, a silent skeletal disease, requires risk assessment and bone density measurement for diagnosis. Current treatments include bisphosphonates and teriparatide, with ongoing research for new therapies.
Area of Science:
- Endocrinology
- Bone Metabolism
- Public Health
Background:
- Osteoporosis is a significant public health issue characterized by poor bone quality and increased fracture risk.
- Many individuals with osteoporosis remain undiagnosed and untreated due to its often asymptomatic nature.
- Bone mineral density (BMD) measurement and risk assessment are crucial for identifying patients who need osteoporosis therapy.
Purpose of the Study:
- To review current diagnostic and therapeutic strategies for osteoporosis.
- To highlight the importance of early detection and intervention.
- To discuss approved treatments and future directions in osteoporosis management.
Main Methods:
- Review of current literature on osteoporosis diagnosis and treatment.
- Analysis of approved pharmacologic therapies in the United States.
- Discussion of evidence supporting treatment efficacy.
Main Results:
- Oral bisphosphonates (e.g., alendronate, risedronate) are generally the first-line treatment for osteoporosis due to proven fracture reduction efficacy.
- Teriparatide is recommended for high-risk patients with very low bone density or existing fractures.
- Calcium, vitamin D, and weight-bearing exercise are important for skeletal health but insufficient as standalone treatments for established osteoporosis.
Conclusions:
- Effective management of osteoporosis relies on identifying at-risk individuals and initiating appropriate therapy.
- Current treatments, particularly oral bisphosphonates, are effective in reducing fractures.
- The field of osteoporosis treatment is dynamic, with new therapeutic agents under development.
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