It was the aim of this study to investigate the influence of two low-dosed oral contraceptives (OC) with the same dosage of ethinylestradiol (EE2 = 20µg) and different doses of the progestin compound (150µg desogestrel and 100µg levonorgestrel) on biochemical markers on bone metabolism (bone-specific alkaline phosphatase, osteocalcin, pyridinoline, desoxypyridinoline, C-terminal cross-linked telopeptides of type I collage (CTx)). Fourty-four women were randomized into the pill taking groups (23 taking desogestrel, 21 taking levonorgestrel), twenty women self-selected to serve as controls. After six months of the study a significant decrease of the bone metabolism, especially of the bone formation was found in the two pill taking groups in comparison with the control group. It could not be clearly evidenced, that one of the two progestin compounds induces a better effect on bone metabolism, but desogestrel tends to exert a more suppressive effect. Relating to our results it can not be excluded, that the achievement of peak bone mass in young women is negatively influenced by the treatment of oral contraceptives.
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It was the aim of this study to investigate the influence of two low-dosed oral contraceptives (OC) with the same dosage of ethinylestradiol (EE2 = 20µg) and different doses of the progestin compound (150µg desogestrel and 100µg levonorgestrel) on biochemical markers on bone metabolism (bone-specific alkaline phosphatase, osteocalcin, pyridinoline, desoxypyridinoline, C-terminal cross-linked telopeptides of type I collage (CTx)). Fourty-four women were randomized into the pill taking groups (23...
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