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Estrogens, cartilage, and osteoarthritis.
Pascal Richette1, Maïté Corvol, Thomas Bardin
1Rheumatology Federation, Lariboisière Teaching Hospital, 2, rue Ambroise Paré, 75010 Paris, France. pascal.richette@lrb.ap-hop-paris.fr
Joint Bone Spine
|September 3, 2003
Summary
Estrogens play a role in osteoarthritis, particularly in women over 50. Hormone replacement therapy may reduce osteoarthritis symptoms and radiological changes, suggesting estrogen
Area of Science:
- Biomedical Science
- Endocrinology
- Rheumatology
Background:
- Osteoarthritis (OA) incidence and prevalence increase significantly in women after age 50.
- Hormone replacement therapy (HRT) shows potential associations with reduced OA symptoms and radiological signs.
- Estrogen receptors (ERalpha and ERbeta) are present in cartilage, indicating a direct cellular response pathway.
Purpose of the Study:
- To explore the role of estrogens in osteoarthritis.
- To investigate the impact of hormone replacement therapy on osteoarthritis.
- To elucidate the mechanisms of estrogen action on chondrocyte metabolism.
Main Methods:
- Epidemiological analysis of OA incidence and prevalence by sex and age.
- Observational studies on HRT effects in menopausal women.
- In vivo animal studies and in vitro cell culture experiments.
Main Results:
- Higher OA incidence and prevalence observed in women than men post-50.
- HRT associated with decreased prevalence of hip and knee OA symptoms and radiological findings.
- Estrogen receptors identified in normal and osteoarthritic cartilage.
- Evidence suggests estrogens influence chondrocyte metabolism.
Conclusions:
- Estrogens are implicated in the pathogenesis of osteoarthritis, especially in postmenopausal women.
- Estrogen signaling via ERalpha and ERbeta in cartilage may modulate OA.
- Further research into estrogen-based therapies for OA is warranted.