Bone
Center for Clinical and Basic Research, Ballerup Byvej 222, DK-2750 Ballerup, Denmark.
Published: November 2004
The effect on urine C-telopeptides of type II collagen (uCTX-II) of oral and transdermal estradiol treatment was compared using samples from two randomized, double-blind, placebo-controlled trials. A total of 171 healthy, Danish postmenopausal women, 45-65 years of age completed the 2-year study periods. The uCTX-II marker assessed cartilage degradation, and this response was compared with the effect on urine C-telopeptides of type I collagen (uCTX-I), considered a specific marker of bone resorption. Doses in the oral estradiol treatment groups (continuous combined therapy) were 1 mg 17-beta-estradiol+1 mg drosperinone or 1 mg 17-beta-estradiol+2 mg drosperinone or 1 mg 17-beta-estradiol+3 mg drosperinone or placebo. Doses in the transdermal estradiol treatment groups (continuous combined therapy) were 45 microg 17-beta-estradiol+30 levonorgestrel or 45 microg 17-beta-estradiol+40 microg levonorgestrel or placebo. The effect of oral and transdermal estradiol therapy on cartilage degradation was reflected as a decrease of 19-30% in uCTX-II (P=0.02 and P=0.003 vs. placebo) after 1 year of treatment. uCTX-I decreased 70% (P<0.0001 vs. placebo) reflecting a pronounced effect on bone resorption that was consistent with a 2-year increase in spine and hip BMD of 7-8% and 4-6%, respectively. The results indicate that different regimens of postmenopausal HRT both have an effect on cartilage and bone thus protecting against osteoporosis and osteoarthritis (OA). However, long-term clinical trials are needed to further investigate this issue.
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http://dx.doi.org/10.1016/j.bone.2004.07.017 | DOI Listing |
Acta Dermatovenerol Croat
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Prof. Ana Bakija-Konsuo, MD, PhD, Clinic for Dermatovenerology CUTIS, Vukovarska 22, Dubrovnik, Croatia;
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View Article and Find Full Text PDFLancet
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