Cervicovaginal microbiota and women’s health outcomes
Ciara J Bryant A , Catherine Burke A and Wilhelmina M Huston A BA School of Life Sciences, Faculty of Science, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia
B Tel.: +61 2 9514 3449; Email: Wilhelmina.Huston@uts.edu.au
Microbiology Australia 42(2) 65-68 https://doi.org/10.1071/MA21022
Submitted: 2 April 2021 Accepted: 30 April 2021 Published: 19 May 2021
Journal Compilation © The Authors 2021 Open Access CC BY-NC-ND, published (by CSIRO Publishing) on behalf of the ASM
Abstract
The human cervicovaginal microbiome has an important role in the health and homoeostasis of the female reproductive tract. A eubiotic microbiome is typically dominated with lactic acid producing bacteria and is categorised into five community state types. Issues arise when the microbiome becomes dysbiotic, with the microbial composition shifting to contain a greater relative abundance of strict and facultative anaerobes. This shift will lead to several adverse changes in the vaginal environment including compromised epithelial cells, cell death, inflammation, and greater susceptibility to infection. These changes are associated with various adverse outcomes including infections, preterm birth, and infertility. In this review, we discuss how the cervicovaginal microbiome influences these outcomes and possible future directions of treatment and research.
References
[1] García-Velasco, J.A. et al. (2020) The reproductive microbiome – clinical practice recommendations for fertility specialists. Reprod. Biomed. Online 41, 443–453.| The reproductive microbiome – clinical practice recommendations for fertility specialists.Crossref | GoogleScholarGoogle Scholar | 32753361PubMed |
[2] Redondo-Lopez, V. et al. (1990) Emerging role of lactobacilli in the control and maintenance of the vaginal bacteria microflora. Rev. Infect. Dis. 12, 856–872.
| Emerging role of lactobacilli in the control and maintenance of the vaginal bacteria microflora.Crossref | GoogleScholarGoogle Scholar | 2237129PubMed |
[3] Ravel, J. et al. (2011) Vaginal microbiome of reproductive-age women. Proc. Natl. Acad. Sci. USA 108, 4680–4687.
| Vaginal microbiome of reproductive-age women.Crossref | GoogleScholarGoogle Scholar | 20534435PubMed |
[4] Gajer, P. et al. (2012) Temporal dynamics of the human vaginal microbiota. Sci. Transl. Med. 4, 132ra52.
| Temporal dynamics of the human vaginal microbiota.Crossref | GoogleScholarGoogle Scholar | 22553250PubMed |
[5] Hearps, A.C. et al. (2017) Vaginal lactic acid elicits an anti-inflammatory response from human cervicovaginal epithelial cells and inhibits production of pro-inflammatory mediators associated with HIV acquisition. Mucosal Immunol. 10, 1480–1490.
| Vaginal lactic acid elicits an anti-inflammatory response from human cervicovaginal epithelial cells and inhibits production of pro-inflammatory mediators associated with HIV acquisition.Crossref | GoogleScholarGoogle Scholar | 28401934PubMed |
[6] Petersen, C. and Round, J.L. (2014) Defining dysbiosis and its influence on host immunity and disease. Cell. Microbiol. 16, 1024–1033.
| Defining dysbiosis and its influence on host immunity and disease.Crossref | GoogleScholarGoogle Scholar | 24798552PubMed |
[7] Fredricks, D.N. et al. (2005) Molecular identification of bacteria associated with bacterial vaginosis. N. Engl. J. Med. 353, 1899–1911.
| Molecular identification of bacteria associated with bacterial vaginosis.Crossref | GoogleScholarGoogle Scholar | 16267321PubMed |
[8] Srinivasan, S. et al. (2012) Bacterial communities in women with bacterial vaginosis: high resolution phylogenetic analyses reveal relationships of microbiota to clinical criteria. PLoS One 7, e37818.
| Bacterial communities in women with bacterial vaginosis: high resolution phylogenetic analyses reveal relationships of microbiota to clinical criteria.Crossref | GoogleScholarGoogle Scholar | 22719852PubMed |
[9] Vitali, B. et al. (2015) Vaginal microbiome and metabolome highlight specific signatures of bacterial vaginosis. Eur. J. Clin. Microbiol. Infect. Dis. 34, 2367–2376.
| Vaginal microbiome and metabolome highlight specific signatures of bacterial vaginosis.Crossref | GoogleScholarGoogle Scholar | 26385347PubMed |
[10] Borgdorff, H. et al. (2016) Cervicovaginal microbiome dysbiosis is associated with proteome changes related to alterations of the cervicovaginal mucosal barrier. Mucosal Immunol. 9, 621–633.
| Cervicovaginal microbiome dysbiosis is associated with proteome changes related to alterations of the cervicovaginal mucosal barrier.Crossref | GoogleScholarGoogle Scholar | 26349657PubMed |
[11] Fethers, K.A. et al. (2009) Early sexual experiences and risk factors for bacterial vaginosis. JID 200, 1662–1670.
| Early sexual experiences and risk factors for bacterial vaginosis.Crossref | GoogleScholarGoogle Scholar | 19863439PubMed |
[12] Coudray, M.S. and Madhivanan, P. (2020) Bacterial vaginosis—a brief synopsis of the literature. Eur. J. Obstet. Gynecol. Reprod. Biol. 245, 143–148.
| Bacterial vaginosis—a brief synopsis of the literature.Crossref | GoogleScholarGoogle Scholar | 31901667PubMed |
[13] Xiao, B. et al. (2019) Association analysis on recurrence of bacterial vaginosis revealed microbes and clinical variables important for treatment outcome. Front. Cell. Infect. Microbiol. 9, 189.
| Association analysis on recurrence of bacterial vaginosis revealed microbes and clinical variables important for treatment outcome.Crossref | GoogleScholarGoogle Scholar | 31245300PubMed |
[14] Brotman, R.M. (2011) Vaginal microbiome and sexually transmitted infections: an epidemiologic perspective. J. Clin. Invest. 121, 4610–4617.
| Vaginal microbiome and sexually transmitted infections: an epidemiologic perspective.Crossref | GoogleScholarGoogle Scholar | 22133886PubMed |
[15] Gosmann, C. et al. (2017) Lactobacillus-deficient cervicovaginal bacterial communities are associated with increased HIV acquisition in young South African women. Immunity 46, 29–37.
| Lactobacillus-deficient cervicovaginal bacterial communities are associated with increased HIV acquisition in young South African women.Crossref | GoogleScholarGoogle Scholar | 28087240PubMed |
[16] Torcia, M.G. (2019) Interplay among vaginal microbiome, immune response and sexually transmitted viral infections. Int. J. Mol. Sci. 20, 266.
| Interplay among vaginal microbiome, immune response and sexually transmitted viral infections.Crossref | GoogleScholarGoogle Scholar |
[17] Ceccarani, C. et al. (2019) Diversity of vaginal microbiome and metabolome during genital infections. Sci. Rep. 9, 14095.
| Diversity of vaginal microbiome and metabolome during genital infections.Crossref | GoogleScholarGoogle Scholar | 31575935PubMed |
[18] Edwards, V.L. et al. (2019) The cervicovaginal microbiota-host interaction modulates Chlamydia trachomatis infection. MBio 10, e01548-19.
| The cervicovaginal microbiota-host interaction modulates Chlamydia trachomatis infection.Crossref | GoogleScholarGoogle Scholar | 31409678PubMed |
[19] Zegers-Hochschild, F. et al. (2009) International Committee for Monitoring Assisted Reproductive Technology (ICMART) and the World Health Organization (WHO) revised glossary of ART terminology, 2009. Fertil. Steril. 92, 1520–1524.
| International Committee for Monitoring Assisted Reproductive Technology (ICMART) and the World Health Organization (WHO) revised glossary of ART terminology, 2009.Crossref | GoogleScholarGoogle Scholar | 19828144PubMed |
[20] Hyman, R.W. et al. (2014) Diversity of the vaginal microbiome correlates with preterm birth. Reprod. Sci. 21, 32–40.
| Diversity of the vaginal microbiome correlates with preterm birth.Crossref | GoogleScholarGoogle Scholar | 23715799PubMed |
[21] Stafford, G.P. et al. (2017) Spontaneous preterm birth is associated with differential expression of vaginal metabolites by lactobacilli-dominated microflora. Front. Physiol. 8, 615.
| Spontaneous preterm birth is associated with differential expression of vaginal metabolites by lactobacilli-dominated microflora.Crossref | GoogleScholarGoogle Scholar | 28878691PubMed |
[22] Kosti, I. et al. (2020) Meta-analysis of vaginal microbiome data provides new insights into preterm birth. Front. Microbiol. 11, 476.
| Meta-analysis of vaginal microbiome data provides new insights into preterm birth.Crossref | GoogleScholarGoogle Scholar | 32322240PubMed |
[23] Eichenberg, C. (2020) In vitro fertilization (IVF) J Repro Sci. , .
[24] Newman, J.E. et al. (2020) Assisted reproductive technology in Australia and New Zealand 2018, National Perinatal Epidemiology and Statistic Unit, Sydney.
[25] Haahr, T. et al. (2016) Abnormal vaginal microbiota may be associated with poor reproductive outcomes: a prospective study in IVF patients. Hum. Reprod. 31, 795–803.
| Abnormal vaginal microbiota may be associated with poor reproductive outcomes: a prospective study in IVF patients.Crossref | GoogleScholarGoogle Scholar | 26911864PubMed |
[26] Kitaya, K. et al. (2019) Characterization of microbiota in endometrial fluid and vaginal secretions in infertile women with repeated implantation failure. Mediators Inflamm. 2019, 4893437.
| Characterization of microbiota in endometrial fluid and vaginal secretions in infertile women with repeated implantation failure.Crossref | GoogleScholarGoogle Scholar | 31249472PubMed |
[27] Kong, Y. et al. (2020) The disordered vaginal microbiota is a potential indicator for a higher failure of in vitro fertilisation. Front. Med. 7, 217.
| The disordered vaginal microbiota is a potential indicator for a higher failure of in vitro fertilisation.Crossref | GoogleScholarGoogle Scholar |
[28] Fu, M. et al. (2020) Alterations in vaginal microbiota and associated metabolome in women with recurrent implantation failure. MBio 11, e03242-19.
| Alterations in vaginal microbiota and associated metabolome in women with recurrent implantation failure.Crossref | GoogleScholarGoogle Scholar | 32487762PubMed |
[29] Delgado-Diaz, D.J. et al. (2020) Distinct immune response elicited from cervicovaginal epithelial cells by lactic acid and short chain fatty acids associated with optimal and non-optimal and vaginal microbiota. Front. Cell. Infect. Microbiol. 9, 446.
| Distinct immune response elicited from cervicovaginal epithelial cells by lactic acid and short chain fatty acids associated with optimal and non-optimal and vaginal microbiota.Crossref | GoogleScholarGoogle Scholar | 31998660PubMed |