Research square · 2025
Evaluating vaginal moisture in mice with calibrated filter paper.
СтатьяПрепринтНазвание и аннотация: Перевод пока не подготовлен
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Liu Mohan, Charek Joseph G, Kurian Rose, Miguel Rodolfo D Vicetti, Cherpes Thomas L
Аннотация
OBJECTIVE: Loss of ovarian estrogen (E) production in postmenopausal women causes vaginal dryness and irritation. The contraceptive depot-medroxyprogesterone acetate (DMPA) likewise promotes vaginal dryness by suppressing ovulation and reducing E production. While vaginal dryness in women is identified by self-report, mouse models of estrogen loss require methods are developed to objectively measure vaginal moisture.
METHODS: Strips of calibrated filter paper, similar to those used to quantify lachrymal secretions, were intravaginally placed in untreated ovary-intact mice, DMPA-treated ovary-intact mice, and ovariectomized (OVX) mice to measure vaginal fluid levels.
RESULTS: Median readings from calibrated filter paper strips from DMPA-treated and OVX mice were significantly lower than the median reading from estrus-stage mice. Levels of circulating estradiol were also significantly lower in DMPA-treated and OVX mice vs. estrus-stage mice.
CONCLUSIONS: Calibrated filter paper provides objective measure of vaginal moisture in mice. Current findings also indicate that hypoestrogenemic mice (DMPA-treated or OVX) accurately model the vaginal moisture losses identified in women with lower levels of circulating E.
METHODS: Strips of calibrated filter paper, similar to those used to quantify lachrymal secretions, were intravaginally placed in untreated ovary-intact mice, DMPA-treated ovary-intact mice, and ovariectomized (OVX) mice to measure vaginal fluid levels.
RESULTS: Median readings from calibrated filter paper strips from DMPA-treated and OVX mice were significantly lower than the median reading from estrus-stage mice. Levels of circulating estradiol were also significantly lower in DMPA-treated and OVX mice vs. estrus-stage mice.
CONCLUSIONS: Calibrated filter paper provides objective measure of vaginal moisture in mice. Current findings also indicate that hypoestrogenemic mice (DMPA-treated or OVX) accurately model the vaginal moisture losses identified in women with lower levels of circulating E.