α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.

<h4>Background</h4>Vulvovaginal candidiasis is a common superficial candidiasis; however, a host's immunological mechanism against vaginal Candida infection remains unknown.<h4>Objectives</h4>In this study, we aimed to elucidate the effect of iNKT cell activation on vulv...

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Autores principales:	Masahiro Abe, Yuki Kinjo, Sota Sadamoto, Minoru Shinozaki, Minoru Nagi, Kazutoshi Shibuya, Yoshitsugu Miyazaki
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/61efe87c9e0c4003b3d3280fbf167827
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spelling	oai:doaj.org-article:61efe87c9e0c4003b3d3280fbf1678272021-12-02T20:13:02Zα-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.1932-620310.1371/journal.pone.0259306https://doaj.org/article/61efe87c9e0c4003b3d3280fbf1678272021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0259306https://doaj.org/toc/1932-6203<h4>Background</h4>Vulvovaginal candidiasis is a common superficial candidiasis; however, a host's immunological mechanism against vaginal Candida infection remains unknown.<h4>Objectives</h4>In this study, we aimed to elucidate the effect of iNKT cell activation on vulvovaginal candidiasis.<h4>Methods</h4>Using a vulvovaginal candidiasis model with estrogenized mice, we evaluated the fungal burden and number of leukocyte infiltrations in the vaginal lavage of wild-type C57BL/6J mice after Candida albicans inoculation. One day before C. albicans inoculation, α-galactosylceramide (the α-GalCer group) or sterile phosphate-buffered saline (the sham group) was intraperitoneally injected into the mice. We also evaluated the level of antimicrobial peptide S100A8 in the vaginal lavage and analyzed the correlation between S100A8 concentration and the number of vaginal leukocyte infiltrations. Moreover, the number of uterine and vaginal immune cells were evaluated using flow cytometry.<h4>Results</h4>The number of vaginal leukocyte infiltrations was significantly higher in the α-GalCer group than in the sham group 3 days after C. albicans inoculation. In addition, the fungal burden was significantly lower in the α-GalCer group than the sham group at 7 days after inoculation. In the analysis of S100A8 concentration of vaginal lavage, there were no significant differences between these two groups, although S100A8 concentration and the number of vaginal leukocyte infiltrations were positively correlated in the α-GalCer group. Moreover, the number of vaginal iNKT cells, NK cells and CD8+ T-cells was significantly higher in the α-GalCer group 3 days after inoculation.<h4>Conclusions</h4>α-GalCer-stimulated iNKT cells likely play a protective role against vulvovaginal candidiasis.Masahiro AbeYuki KinjoSota SadamotoMinoru ShinozakiMinoru NagiKazutoshi ShibuyaYoshitsugu MiyazakiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11, p e0259306 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Masahiro Abe Yuki Kinjo Sota Sadamoto Minoru Shinozaki Minoru Nagi Kazutoshi Shibuya Yoshitsugu Miyazaki α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.
description	<h4>Background</h4>Vulvovaginal candidiasis is a common superficial candidiasis; however, a host's immunological mechanism against vaginal Candida infection remains unknown.<h4>Objectives</h4>In this study, we aimed to elucidate the effect of iNKT cell activation on vulvovaginal candidiasis.<h4>Methods</h4>Using a vulvovaginal candidiasis model with estrogenized mice, we evaluated the fungal burden and number of leukocyte infiltrations in the vaginal lavage of wild-type C57BL/6J mice after Candida albicans inoculation. One day before C. albicans inoculation, α-galactosylceramide (the α-GalCer group) or sterile phosphate-buffered saline (the sham group) was intraperitoneally injected into the mice. We also evaluated the level of antimicrobial peptide S100A8 in the vaginal lavage and analyzed the correlation between S100A8 concentration and the number of vaginal leukocyte infiltrations. Moreover, the number of uterine and vaginal immune cells were evaluated using flow cytometry.<h4>Results</h4>The number of vaginal leukocyte infiltrations was significantly higher in the α-GalCer group than in the sham group 3 days after C. albicans inoculation. In addition, the fungal burden was significantly lower in the α-GalCer group than the sham group at 7 days after inoculation. In the analysis of S100A8 concentration of vaginal lavage, there were no significant differences between these two groups, although S100A8 concentration and the number of vaginal leukocyte infiltrations were positively correlated in the α-GalCer group. Moreover, the number of vaginal iNKT cells, NK cells and CD8+ T-cells was significantly higher in the α-GalCer group 3 days after inoculation.<h4>Conclusions</h4>α-GalCer-stimulated iNKT cells likely play a protective role against vulvovaginal candidiasis.
format	article
author	Masahiro Abe Yuki Kinjo Sota Sadamoto Minoru Shinozaki Minoru Nagi Kazutoshi Shibuya Yoshitsugu Miyazaki
author_facet	Masahiro Abe Yuki Kinjo Sota Sadamoto Minoru Shinozaki Minoru Nagi Kazutoshi Shibuya Yoshitsugu Miyazaki
author_sort	Masahiro Abe
title	α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.
title_short	α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.
title_full	α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.
title_fullStr	α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.
title_full_unstemmed	α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.
title_sort	α-galactosylceramide-stimulated invariant natural killer t-cells play a protective role in murine vulvovaginal candidiasis by candida albicans.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/61efe87c9e0c4003b3d3280fbf167827
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α-galactosylceramide-stimulated invariant natural killer T-cells play a protective role in murine vulvovaginal candidiasis by Candida albicans.

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