Effects of the copper IUD on composition of the vaginal microbiota in the olive baboon
Eastman, A. J.; Sack, D.; Chai, D.; Bassis, C. M.; Carter, K. A.; Young, V. B.; Bergin, I. L.; Bell, J. D.
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ObjectivesAssess the impact of transcervical insertion, use, and removal of copper intrauterine devices (Cu-IUD) on baboon physiology (e.g. weight, menstruation) and vaginal microbiota.\n\nStudy designVaginal swabs were taken before insertion (pre-IUD), during IUD use (IUD), and after removal (post-IUD) and microbiota assessed by 16S rRNA-encoding gene sequence analysis.\n\nResultsNo animals showed physical changes or discomfort during pre-IUD, IUD, or post-IUD phases. There were no changes to the microbiome associated with insertion or use of Cu-IUD over 16 weeks, although removal resulted in perturbation to community structure.\n\nConclusionsBaboons tolerate Cu-IUD insertion with minimal device-associated changes to their vaginal microbiome throughout use and have no significant changes to their physiology or menstrual cycle during any phase.\n\nImplicationsA baboon model of Cu-IUD may allow investigations into the intersection of Cu-IUDs, reproductive tract disorders and pathogens that would not be possible in human studies.
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