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- W2022987652 abstract "Streptococcus agalactiae (Group B Streptococcus, GBS) is a Gram-positive bacterium, which colonizes the vaginal tract in 10-30% of women. Colonization is transient in nature, and little is known about the host and bacterial factors controlling GBS persistence. Gaining insight into these factors is essential for developing therapeutics to limit maternal GBS carriage and prevent transmission to the susceptible newborn. In this work, we have used human cervical and vaginal epithelial cells, and our established mouse model of GBS vaginal colonization, to characterize key host factors that respond during GBS colonization. We identify a GBS strain that persists beyond a month in the murine vagina, whereas other strains are more readily cleared. Correspondingly, we have detected differential cytokine production in human cell lines after challenge with the persistent strain vs. other GBS strains. We also demonstrate that the persistent strain more readily invades cervical cells compared with vaginal cells, suggesting that GBS may potentially use the cervix as a reservoir to establish long-term colonization. Furthermore, we have identified interleukin-17 production in response to long-term colonization, which is associated with eventual clearance of GBS. We conclude that both GBS strain differences and concurrent host immune responses are crucial in modulating vaginal colonization." @default.
- W2022987652 created "2016-06-24" @default.
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- W2022987652 date "2015-04-08" @default.
- W2022987652 modified "2023-10-14" @default.
- W2022987652 title "Characterization of host immunity during persistent vaginal colonization by Group B Streptococcus" @default.
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- W2022987652 doi "https://doi.org/10.1038/mi.2015.23" @default.
- W2022987652 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4598252" @default.
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