Objective: To evaluate how diet, exercise, and substance use influence serum etonogestrel concentrations among contraceptive implant users.
Study Design: We conducted a cross-sectional analysis of healthy, reproductive-age etonogestrel implant users. We assessed participants' current diet, exercise, and substance (alcohol, tobacco, marijuana) use habits while simultaneously measuring serum etonogestrel concentrations. We used linear modeling to test for associations between survey responses and etonogestrel concentrations.
Results: Among 115 participants, exercise habits and substance use had no significant associations with etonogestrel concentrations, while increased caloric intake demonstrated inconsistent associations.
Conclusion: The lifestyle factors of diet, exercise, and substance use do not influence steady-state pharmacokinetics among contraceptive implant users.
Clinical Trial Registration: Clinicaltrials.gov, NCT03092037.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11588555 | PMC |
http://dx.doi.org/10.1016/j.contraception.2024.110539 | DOI Listing |
J Control Release
December 2024
School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, Northern Ireland BT9 7BL, United Kingdom. Electronic address:
J Infect Dis
October 2024
Department of Pediatrics, University of California, Los Angeles, Los Angeles, California, USA.
Background: HIV-1 antiretroviral therapy (ART) alters hormonal contraceptive levels delivered via intravaginal ring (IVR) in a regimen specific manner. We explored the role of the IVR on vaginal microbial communities, vaginal short chain fatty acids (SCFAs), vaginal HIV shedding, and the effect of vaginal microbes on hormone concentrations in cisgender women with HIV (WWH).
Methods: Vaginal microbes were assessed by 16S RNA sequencing of weekly vaginal swabs, vaginal SCFA by mass spectrometry, HIV-1 shedding by nucleic acid amplification on vaginal aspirates, and bacterial vaginosis by Nugent scoring from 74 participants receiving an etonorgestrel/ethinyl estradiol (ENG/EE) intravaginal ring while on no ART (N=25), efavirenz-based ART (N=25), or atazanavir-based ART (N=24).
Contraception
October 2024
Antiviral Pharmacology Laboratory, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA. Electronic address:
PLoS One
July 2024
Department of Epidemiology, George Washington University, Washington, DC, United States of America.
Adolescent girls bear a disproportionate burden of both the HIV epidemic and unintended pregnancies; yet important questions remain unanswered regarding the effects of hormonal contraceptives on the vaginal immune microenvironment, which can impact HIV susceptibility in this group. Multiple studies report genital immune alterations associated with the progestin-based contraceptive Depot medroxyprogesterone acetate (DMPA) in adult women, but there is little available data in adolescents. The objective of this longitudinal cohort study was to evaluate the effects of short-term use of three progestin-based contraceptives, levonorgestrel intrauterine device (LNG-IUD), subdermal etonogestrel (ETNG), and injectable DMPA, on HIV-associated vaginal immune biomarkers and microbiome in adolescent girls.
View Article and Find Full Text PDFContraception
December 2024
University Hospitals Cleveland Medical Center and Case Western Reserve University, Department of Obstetrics and Gynecology, Cleveland, OH, USA.
Objective: To evaluate how diet, exercise, and substance use influence serum etonogestrel concentrations among contraceptive implant users.
Study Design: We conducted a cross-sectional analysis of healthy, reproductive-age etonogestrel implant users. We assessed participants' current diet, exercise, and substance (alcohol, tobacco, marijuana) use habits while simultaneously measuring serum etonogestrel concentrations.
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