Related Experiment Videos
Endometrial vasculature in Norplant users
1Department of Obstetrics and Gynaecology, Monash University, Monash Medical Centre, Clayton, Victoria, Australia.
Human Reproduction (Oxford, England)
|October 1, 1996
Summary
Progestin-only contraceptives like Norplant can cause irregular bleeding due to changes in the endometrium's microvasculature. This review highlights how steroids affect blood vessels, potentially leading to fragility and bleeding in users.
Area of Science:
- Reproductive endocrinology
- Vascular biology
- Gynecology
Background:
- Progestin-only contraceptives are associated with disruptive endometrial bleeding.
- Understanding steroid effects on the endometrium is crucial for managing side effects.
Purpose of the Study:
- To review steroid control of microvasculature, heterogeneity, and fragility.
- To examine relevance to endometrial microvasculature in Norplant users.
Main Methods:
- Review of current literature on steroid-vascular interactions.
- Histological comparison of endometrium in Norplant users and controls.
Main Results:
- Norplant endometrium is thinner with signs of hemorrhage and dilated subepithelial vessels.
- Microvascular heterogeneity and fragility are implicated in progestin-induced bleeding.
Conclusions:
- Steroids significantly influence endometrial vasculature.
- Microvascular changes, including fragility, likely contribute to breakthrough bleeding with progestin-only contraceptives.
Keywords:
AsiaBiologyClinical ResearchContraceptionContraceptive Agents, Female--pharmacodynamicsContraceptive Agents, Female--side effectsContraceptive Agents, Progestin--side effectsContraceptive Agents--pharmacodynamicsContraceptive Agents--side effectsContraceptive Implants--side effectsContraceptive Methods--side effectsDeveloping CountriesDiseasesEndometrial EffectsEndometriumFamily PlanningGenitaliaGenitalia, FemaleIndonesiaLevonorgestrel--pharmacodynamicsMenstruation DisordersPhysiologyResearch MethodologyResearch ReportSoutheastern AsiaUrogenital SystemUterus