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Updated: Aug 4, 2026
12:34
Collection, Isolation, and Flow Cytometric Analysis of Human Endocervical Samples
Published on: July 6, 2014
Vaginal-cervical epithelial permeability decreases after menopause
1Department of Obstetrics and Gynecology, University MacDonald Women's Hospital, Cleveland, Ohio 44106, USA. gig@po.cwru.edu
Fertility and Sterility
|October 10, 2001
Summary
Aging and estrogen deficiency independently reduce vaginal-cervical epithelial barrier function. Estrogen replacement therapy can increase permeability, but this effect is counteracted by age-related changes in tight junctions.
Area of Science:
- Gynecology and Reproductive Biology
- Epithelial Biology
- Pharmacology
Background:
- Menopause is associated with significant physiological changes, including alterations in vaginal-cervical epithelial barrier function.
- Estrogen (E) plays a crucial role in maintaining epithelial integrity and permeability.
Purpose of the Study:
- To investigate the independent and combined effects of aging and estrogen levels on vaginal-cervical epithelial paracellular permeability.
Main Methods:
- Utilized primary and tertiary cultures of human ectocervical epithelial cells from premenopausal, perimenopausal, and postmenopausal women.
- Assessed paracellular permeability by measuring transepithelial electrical conductance and pyranine permeability.
Main Results:
- Paracellular permeability decreased with advancing age, indicating increased epithelial barrier function.
- Estrogen removal reduced permeability, while estrogen (17beta-estradiol) treatment increased it, though effects were age-dependent.
- Tamoxifen blocked estrogen's effect on permeability, suggesting a receptor-mediated mechanism.
Conclusions:
- Both aging and estrogen deficiency independently decrease vaginal-cervical epithelial paracellular permeability.
- Estrogen increases permeability in postmenopausal women via estrogen receptors, but this is masked by age-related increases in tight junction resistance.
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