Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption

Abstract Sepsis, during which the intestinal epithelial barrier is frequently disrupted, remains a challenging and life-threatening problem in clinical practice. The P2X7 receptor (P2X7R) is a non-selective adenosine triphosphate-gated cation channel present in macrophages that is involved in inflam...

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Autores principales:	Xiuwen Wu, Jianan Ren, Guopu Chen, Lei Wu, Xian Song, Guanwei Li, Youming Deng, Gefei Wang, Guosheng Gu, Jieshou Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f977ba3be8c943cc8d7dc7deee0d72ec
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spelling	oai:doaj.org-article:f977ba3be8c943cc8d7dc7deee0d72ec2021-12-02T12:32:00ZSystemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption10.1038/s41598-017-04231-52045-2322https://doaj.org/article/f977ba3be8c943cc8d7dc7deee0d72ec2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04231-5https://doaj.org/toc/2045-2322Abstract Sepsis, during which the intestinal epithelial barrier is frequently disrupted, remains a challenging and life-threatening problem in clinical practice. The P2X7 receptor (P2X7R) is a non-selective adenosine triphosphate-gated cation channel present in macrophages that is involved in inflammatory responses. However, little is known about the role of P2X7R in macrophages during sepsis-induced intestinal barrier disruption. In this study, mice were treated with the P2X7R antagonist A740003 or the agonist BzATP by intra-peritoneal injection after the induction of gut-origin sepsis. The survival rates, inflammatory responses, intestinal barrier integrity, macrophage marker expression, and ERK and NF-κB activities were evaluated. Intestinal macrophages were also isolated and studied after exposure to Brilliant Blue G or BzATP. We found that a systemic P2X7R blockade downregulated sepsis-induced inflammatory responses and attenuated intestinal barrier dysfunction based on the evidence that mice in the A740003-treated group exhibited alleviated pro-inflammatory cytokine synthesis, intestinal hyperpermeability, epithelial apoptosis rates and tight junction damage compared with the septic mice. These changes were partly mediated by the inhibition of M1 macrophages activation via ERK/NF-κB pathways. Our data presented herein show that a P2X7R blockade could be a potential therapeutic target for the treatment of sepsis-induced intestinal barrier dysfunction.Xiuwen WuJianan RenGuopu ChenLei WuXian SongGuanwei LiYouming DengGefei WangGuosheng GuJieshou LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiuwen Wu Jianan Ren Guopu Chen Lei Wu Xian Song Guanwei Li Youming Deng Gefei Wang Guosheng Gu Jieshou Li Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption
description	Abstract Sepsis, during which the intestinal epithelial barrier is frequently disrupted, remains a challenging and life-threatening problem in clinical practice. The P2X7 receptor (P2X7R) is a non-selective adenosine triphosphate-gated cation channel present in macrophages that is involved in inflammatory responses. However, little is known about the role of P2X7R in macrophages during sepsis-induced intestinal barrier disruption. In this study, mice were treated with the P2X7R antagonist A740003 or the agonist BzATP by intra-peritoneal injection after the induction of gut-origin sepsis. The survival rates, inflammatory responses, intestinal barrier integrity, macrophage marker expression, and ERK and NF-κB activities were evaluated. Intestinal macrophages were also isolated and studied after exposure to Brilliant Blue G or BzATP. We found that a systemic P2X7R blockade downregulated sepsis-induced inflammatory responses and attenuated intestinal barrier dysfunction based on the evidence that mice in the A740003-treated group exhibited alleviated pro-inflammatory cytokine synthesis, intestinal hyperpermeability, epithelial apoptosis rates and tight junction damage compared with the septic mice. These changes were partly mediated by the inhibition of M1 macrophages activation via ERK/NF-κB pathways. Our data presented herein show that a P2X7R blockade could be a potential therapeutic target for the treatment of sepsis-induced intestinal barrier dysfunction.
format	article
author	Xiuwen Wu Jianan Ren Guopu Chen Lei Wu Xian Song Guanwei Li Youming Deng Gefei Wang Guosheng Gu Jieshou Li
author_facet	Xiuwen Wu Jianan Ren Guopu Chen Lei Wu Xian Song Guanwei Li Youming Deng Gefei Wang Guosheng Gu Jieshou Li
author_sort	Xiuwen Wu
title	Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption
title_short	Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption
title_full	Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption
title_fullStr	Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption
title_full_unstemmed	Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption
title_sort	systemic blockade of p2x7 receptor protects against sepsis-induced intestinal barrier disruption
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f977ba3be8c943cc8d7dc7deee0d72ec
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_version_	1718394255196553216

Systemic blockade of P2X7 receptor protects against sepsis-induced intestinal barrier disruption

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