Document Detail

Extended regimens of the combined contraceptive vaginal ring containing etonogestrel and ethinyl estradiol: effects on lipid metabolism.
MedLine Citation:
PMID:  21757057     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: Oral contraceptives used for extended periods of time have been studied because of their potential benefits; however, there have been few publications on extended regimens of vaginal contraceptive rings. The aim of this study was to evaluate modifications in the lipid profile of women using the vaginal ring continuously over a 1-year period.
STUDY DESIGN: This prospective cohort enrolled 75 women (18-37 years) who used a contraceptive vaginal ring releasing 120 mcg of etonogestrel and 15 mcg of ethinyl estradiol daily continuously for 84 days, followed by a 7-day ring-free interval, during 1 year. At baseline and every 3 months during the 1-year study period, blood was collected to assess cholesterol, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides and apolipoproteins A-I and B. The ANOVA test was used to analyze differences in the results of these exams over time.
RESULTS: After 1 year of continuous contraceptive use, there was a significant increase in triglycerides as well as in total and HDL-C levels. There was a nonsignificant decrease in the mean concentration of LDL-C during the study period. Apolipoprotein A-I increased and apolipoprotein B decreased, but the apolipoprotein A-I/apolipoprotein B ratio did not change significantly.
CONCLUSION: The combined contraceptive vaginal ring used on an extended regimen causes changes in the lipid profile metabolism of users. Despite the vaginal route of administration, the steroids released by the ring caused significant changes in lipids and lipoproteins, which were typical of those seen with ethinyl estradiol given either orally or parenterally.
Fernando Augusto Barreiros; Cristina Aparecida Falbo Guazzelli; Ricardo Barbosa; Maria Regina Torloni; Marcia Barbieri; Fabio F Araujo
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Publication Detail:
Type:  Journal Article     Date:  2010-12-23
Journal Detail:
Title:  Contraception     Volume:  84     ISSN:  1879-0518     ISO Abbreviation:  Contraception     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-07-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0234361     Medline TA:  Contraception     Country:  United States    
Other Details:
Languages:  eng     Pagination:  155-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
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