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Changes in serum levels of cartilage oligomeric matrix protein after estrogen and alendronate therapy in postmenopausal women.

 Seok Kyo Seo ; Hyo In Yang ; Byung Seok Lee ; SiHyun Cho ; Young Sik Choi ; Young Eun Jeon ; Kyung Jin Lim 
 Gynecologic and Obstetric Investigation, Vol.74(2) : 143~150, 2012 
Journal Title
 Gynecologic and Obstetric Investigation 
Issue Date
BACKGROUND: Cartilage oligomeric matrix protein (COMP) is a biomarker for joint destruction and its serum levels are used for assessing therapeutic efficacy. This study aims to compare changes in serum COMP levels in postmenopausal women with osteopenia/osteoporosis receiving estrogen and alendronate. METHODS: A total of 62 postmenopausal women diagnosed with osteopenia or osteoporosis were treated with either estrogen (17β-estradiol 1 mg, n = 30) or bisphosphonate (alendronate 5 mg, n = 32) for 6 months. The controls were healthy postmenopausal women (n = 30). Serum COMP and osteocalcin levels were measured at baseline and after 6 months of treatment. RESULTS: Estrogen decreased levels of COMP at 6 months compared to baseline levels (–8.35 ± 19.38%), whereas the bisphosphonate and control groups resulted in no significant changes (–5.50 ± 18.69 and –1.49 ± 25.34%, respectively). Concentrations of osteocalcin decreased significantly in both treatment groups (estrogen –25.60 ± 24.42% and alendronate –13.76 ± 23.89%, respectively). There was a significant positive correlation between changes after 6 months in COMP and osteocalcin (R = 0.48, p = 0.002). CONCLUSIONS: Postmenopausal women treated with estrogen showed significantly decreased levels of COMP after 6 months. Estrogen might provide a further treatment modality in the prevention of joint destruction.
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1. 연구논문 > 1. College of Medicine > Dept. of Obstetrics & Gynecology
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