Activated sympathetic nerve post stroke downregulates Toll-like receptor 5 and disrupts the gut mucosal barrier.

Autor:	Wang H; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China., Li J; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China., Wu G; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China., Lin X; Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China., Chen J; Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China., Liang J; Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China., Zhang J; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China., Luo X; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China., Mao H; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China., Xie J; Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China., Li Z; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China., Zhou H; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China; Guangdong Provincial Clinical Research Center for Laboratory Medicine, Guangzhou, Guangdong 510033, China; State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, Guangdong 510515, China., Xu K; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China. Electronic address: xukaiyu09@smu.edu.cn., Yin J; Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China. Electronic address: yinj@smu.edu.cn., He Y; Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510280, China; Guangdong Provincial Clinical Research Center for Laboratory Medicine, Guangzhou, Guangdong 510033, China; State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, Guangdong 510515, China; Key Laboratory of Mental Health of the Ministry of Education, Guangzhou, Guangdong 510515, China. Electronic address: yanhe@i.smu.edu.cn.
Jazyk:	angličtina
Zdroj:	Cell reports. Medicine [Cell Rep Med] 2024 Oct 15; Vol. 5 (10), pp. 101754. Date of Electronic Publication: 2024 Oct 08.
DOI:	10.1016/j.xcrm.2024.101754
Abstrakt:	The gut permeability significantly increases after ischemic stroke, partly due to disrupted mucosal barrier, but the mechanism remains elusive. Here, we found that the mucus disruption starts at 2 h post stroke, whereas goblet cell functions remain intact. Meanwhile, the flagellated bacteria Helicobacter thrives and penetrates in the mucus layer. Elimination of the mucosal microbiota or transplantation of Helicobacter in germ-free mice reveals an important role of the mucosal microbiota in mucus disruption. The bacterial invasion is due to downregulated Toll-like receptor 5 (TLR5) and its downstream products flagellin-specific IgA and antimicrobial peptides. Knockdown of intestinal TLR5 increases the abundance of flagellated bacteria and exacerbates mucus injury. Intestinal TLR5 is downregulated by the activation of sympathetic nerve. Serum noradrenaline level is positively associated with flagellin level in patients with stroke and patients' prognosis. These findings reveal a neural pathway in which the sympathetic nerve disrupts the mucosal barrier, providing potential therapeutic targets for stroke injury. Competing Interests: Declaration of interests The authors declare no competing interests. (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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