Abstract
This paper reviews basic facts on vagina histology and ultrastructure with respect to passage of different substances and drugs through the epithelium. Particular interest is devoted to the action mechanism of topically-applied vaginal estrogen, its binding to receptors in different vaginal cell types, and possible local metabolic routes. Differences in estrogen sensitivity between uterus and vagina are discussed as well as the background for the high vaginal sensitivity.
MeSH terms
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Absorption
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Aging*
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Animals
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Estrogen Replacement Therapy
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Estrogens / metabolism
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Estrogens / pharmacology*
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Female
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Growth Substances / pharmacology
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Humans
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Mice
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Mucous Membrane / anatomy & histology
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Mucous Membrane / chemistry
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Mucous Membrane / physiology
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Rats
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Receptors, Estrogen / analysis
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Regional Blood Flow
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Vagina / anatomy & histology*
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Vagina / chemistry
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Vagina / drug effects
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Vagina / physiology
Substances
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Estrogens
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Growth Substances
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Receptors, Estrogen