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Related Experiment Videos

Vaginal contraception with gossypol: a clinical study.

K Ratsula, M Haukkamaa, K Wichmann

    Contraception
    |June 1, 1983
    PubMed
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    Gossypol acetic acid shows promise as a vaginal contraceptive. This clinical study found gossypol gel significantly reduced sperm count and motility in cervical mucus, suggesting effective in vivo contraceptive potential.

    Area of Science:

    • Reproductive biology
    • Pharmacology
    • Contraception research

    Background:

    • Gossypol acetic acid has demonstrated in vitro anti-herpes simplex virus type 2 activity.
    • This antiviral property suggests potential for topical barrier contraceptives.
    • Previous research indicated gossypol's inhibitory effects on viruses.

    Purpose of the Study:

    • To evaluate the vaginal contraceptive efficacy of gossypol acetic acid gel in humans.
    • To assess the effect of gossypol gel on sperm viability and motility in vivo.
    • To explore gossypol's potential as a novel topical contraceptive agent.

    Main Methods:

    • A clinical study involving fifteen women who had undergone tubal sterilization.
    • Postcoital tests were conducted before and after the application of gossypol-containing vaginal gel.
    Keywords:
    BiologyCervical MucusClinical ResearchContraceptionContraception ResearchContraceptive AgentsContraceptive Agents, FemaleEconomic FactorsFamily PlanningGenitaliaGerm CellsIn VitroMeasurementPhysiologyReproductionReproductive Control AgentsResearch And DevelopmentResearch MethodologySperm Immobilizing AgentsSperm TransportSpermatozoaSpermicidal Contraceptive AgentsTechnologyTestingUrogenital System

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  • Spermatozoa presence and motility in cervical mucus were analyzed.

    • Main Results:

    • Gossypol gel application significantly decreased the number of spermatozoa in cervical mucus.
    • In 11 out of 15 women, all observed spermatozoa were immobilized post-application.
    • In the remaining 4 cases, observed spermatozoa exhibited poor motility with no forward progression.

    Conclusions:

    • Gossypol acetic acid demonstrates significant contraceptive potential as a vaginal agent in human in vivo experiments.
    • The study supports gossypol's efficacy in reducing sperm motility and presence, indicating a contraceptive effect.
    • Gossypol's dual antiviral and contraceptive properties make it an attractive candidate for topical barrier contraceptives.