Published in:
01-11-2009 | Original Article
Oral hormonal contraceptives affect the concentration and composition of urinary glycosaminoglycans in young women
Authors:
Mary J. G. Zamboni, Carlos A. P. Cabral, Francisco J. B. Sampaio, Luiz E. M. Cardoso
Published in:
International Urogynecology Journal
|
Issue 11/2009
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Abstract
Introduction and hypothesis
Urinary glycosaminoglycans (uGAG) have protective effects against urinary tract disorders. Here we investigated whether oral hormonal contraceptives (OC) affect uGAG excretion.
Methods
Urine specimens were from young women regularly taking: ethinyl estradiol + drospirenone, n = 9; ethinyl estradiol + cyproterone acetate, n = 9; and ethinyl estradiol + gestodene, n = 7. Controls were from ten women not taking OC. Total uGAG was assayed as hexuronic acid/urinary creatinine. Sulfated uGAG species was determined by electrophoresis.
Results
Unlike controls, total uGAG in the two halves of the menstrual cycle was similar in the OC groups. Whole cycle uGAG was higher in the OC groups (p < 0.01), especially for ethinyl estradiol + cyproterone acetate (p < 0.005). The three OC produced decreases of ~50% in heparan sulfate (p < 0.02) and dermatan sulfate (p < 0.02), and a ~100% increase in chondroitin sulfate (p < 0.004).
Conclusions
uGAG excretion is changed in women taking OC, and this might enhance the protective effects of these molecules against urinary tract disorders.