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Animal Bioresource in Japan

.: Home > Animal Bioresource in Japan > 2015 > Volume 64 Number 4 > Keigyou Yoh1), Masami Ojima1), and Satoru Takahashi1–4)

Th2-biased GATA-3 transgenic mice developed severe experimental peritoneal fibrosis compared with Th1- biased T-bet and Th17-biased RORγt transgenic mice

Keigyou Yoh1), Masami Ojima1), and Satoru Takahashi1–4)
1)Anatomy and Embryology, Division of Biomedical Science, Faculty of Medicine, University of Tsukuba, Japan 2)International Institute for Integrative Sleep Medicine (WPI-IIIS), Faculty of Medicine, University of Tsukuba, Japan 3)Life Science Center, Tsukuba Advanced Research Alliance (TARA), Faculty of Medicine, University of Tsukuba, Japan 4)Laboratory Animal Resource Center (LARC), Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
Abstract :

Encapsulating peritoneal sclerosis is one of the most serious complications of long-term peritoneal dialysis. The pathogenesis of encapsulating peritoneal sclerosis has not been elucidated, but several putative factors necessary for the development of peritoneum fibrosis (PF) have been reported. However, the roles of T helper (Th) cells in the progression of PF are unknown. The purpose of this study was to clarify the roles of Th1, Th2, and Th17 cells in the progression of PF. T-bet, GATA-3, and RORγt are Th1, Th2, and Th17 lineage commitment transcription factors, respectively. We previously generated Th1-biased (T-bet transgenic (Tg)) mice, Th2-biased (GATA-3 Tg) mice, and Th17-biased (RORγt Tg) mice. In this study, Th1, Th2, Th17-biased, and wild-type mice were administered chlorhexidine gluconate (CG) intraperitoneally and analyzed on day 21. CG-injected GATA-3 Tg mice showed a distended intestinal tract and developed marked thickening of the submesothelial space compared with the other groups. CG-injected GATA-3 Tg mice also showed significant expression of α-SMA positive cells, macrophages, and collagen III in the submesothelium. In contrast, CG-injected T-bet Tg mice only developed mild peritoneal fibrosis. Cytokines analysis in peritoneal fluid showed that IFN-γ was significantly increased in CG-injected T-bet Tg mice and that IL-13 was significantly increased in CG-injected GATA-3 Tg mice. Moreover, intraperitoneal administration of IFN-γ improved PF in GC-injected wild-type mice. Our results suggest that Th2 cells may play roles in the development of experimental PF and that Th1 cells may alleviate the severity of experimental PF.

Keywords :
IFN-γ, peritoneal fibrosis, T helper cell type 1, T helper cell type 2

Date Deposited : 07 Jan 2016 11:03

Last Modified : 07 Jan 2016 11:03

Official URL: http://https://www.jstage.jst.go.jp/browse/expanim/64/4/_contents

Volume 64, Number 4, July 2015 , ISSN 353–362

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