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My microbiota as a woman

Are certain women predisposed to STIs?

Women health
The vaginal microbiota

Several epidemiological studies have found a correlation between bacterial vaginosis, vulvovaginal candidiasis, colonization of the vaginal microbiota by pathogenic bacteria, and sexually transmitted infections (STIs). Based on these results, a Dutch researcher6 investigated whether their vaginal microbiota predisposes certain women to acquire STIs.

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About this article

Created 08 October 2019
Updated 03 January 2022

A healthy vaginal microbiota is composed of various microorganisms, where lactobacilli generally predominate. However, advances in molecular biology have shown that not all lactobacilli provide the same degree of protection: Lactobacillus crispatus, for example, is associated to an anti-inflammatory profile and seems to afford protection against pathogenic germs. On the contrary, Lactobacillus iners seems to promote an imbalance of the vaginal microbiota (dysbiosis) favorable to bacterial vaginosis, similarly to pathogenic bacteria

Microbiota, vaginosis and STIs: dangerous liaisons

Vaginosis, vaginal candidiasis, colonization of the vaginal microbiota by pathogens, and STIs share many biological and behavioral factors which could explain their interrelationships. Although vaginosis and vaginal candidiasis are not STIs per se (since they can occur without intercourse), a study by Janneke Van de Wijgert showed that sexual transmission of the responsible organisms most certainly plays a role in their development. Moreover, dysbiosis and vaginosis weaken the vaginal mucosal barrier and leads to cervicovaginal inflammation, which increases the risk of HIV infection. The risk of contracting sexually transmitted infections thus depends, at least in part, on the health of the vaginal microbiota. By preserving their microbial flora, women could limit their risk of developing STI. Future research needs to focus on determining how the vaginal microbiota can expose women to a higher risk of STI, in order to better screen and treat them, especially with local probiotics.

Sources

6 Van de Wijgert JHHM. The vaginal microbiome and sexually transmitted infections are interlinked: Consequences for treatment and prevention. PLoS Med. 2017 Dec

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Vaginosis Bacterial Vaginosis

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    Actu GP : Vaginose bactérienne : bientôt une greffe de microbiote vaginal ? Bacterial vaginosis: could there soon be a vaginal microbiota transplant ?
    Focus
    Women and their microbiota
    • Microbiota, vulvovaginal infections and cystitis
      • Is bacterial vaginosis a disease?
      • Escherichia coli or the influence of intestinal microbiota on urinary tract infections
      • Are certain women predisposed to STIs?
    • Reproductive health, pregnancy and postpartum
      • Role of the vaginal microbiota in the health of the reproductive system and that of future generations
      • Cervical microbiome in postpartum HIV-positive women
    • After menopause
      • Natural remedies against osteoporosis?
      • Oral and intestinal microbiota: towards a different management of menopause
    • Microbiota and cancer
      • Microbiota and breast cancer
      • Expert interview : Pr. Laurence Zitvogel
    Created 08 October 2019
    Updated 03 January 2022

    About this article

    To know more about this topic.

    Main topic

    Women health

    Related microbiotas

    The vaginal microbiota
    Escherichia coli or the influence of intestinal microbiota on urinary tract infections
    Role of the vaginal microbiota in the health of the reproductive system and that of future generations
    Focus

    Women and their microbiota

    Microbiota, vulvovaginal infections and cystitis

    Is bacterial vaginosis a disease? Escherichia coli or the influence of intestinal microbiota on urinary tract infections Are certain women predisposed to STIs?

    Reproductive health, pregnancy and postpartum

    Role of the vaginal microbiota in the health of the reproductive system and that of future generations Cervical microbiome in postpartum HIV-positive women

    After menopause

    Natural remedies against osteoporosis? Oral and intestinal microbiota: towards a different management of menopause

    Microbiota and cancer

    Microbiota and breast cancer Expert interview : Pr. Laurence Zitvogel
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