Abstract
The effects of intrautuerine device (IUD) on maternal copper (Cu) metabolism during breastfeeding was studied in 95 volunteer mothers who chose to use non-hormonal contraceptive methods. They were divided into two groups that were inserted with the IUD-Cu 380A (n = 33), IUD-Cu 200B (n = 29), and a third group that did not use any IUDs served as control (n = 33). Endometrial biopsies, blood, and milk samples were collected before (at 10 weeks postpartum) and 6 weeks after insertion of device for the determination of metabolites associated with copper metabolism, namely, serum ceruloplasmin, and copper concentrations in breast milk and endometrium. Endometrial copper concentration increased in women using IUDs, but was statistically significant (p = 0.001) only in the IUD-Cu 380A group. The increase in endometrial copper concentration did not affect serum ceruloplasmin or milk copper concentrations.
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