期刊
PHARMACOLOGICAL REPORTS
卷 71, 期 6, 页码 1108-1114出版社
POLISH ACAD SCIENCES INST PHARMACOLOGY
DOI: 10.1016/j.pharep.2019.06.005
关键词
Cholinergic anti-inflammatory pathway; Muscarinic cholinergic receptor; Sepsis; Inflammation
Background: To compare pharmacologic effects of pirenzepine and AF-DX116, a selective competitive antagonist for M1 and M2 subtype muscarinic cholinergic receptors (mAChRs), respectively, with atropine, a non-selective competitive antagonist for mAChRs, on Lipopolysaccharide (LPS). Methods: Male C57BL/6 mice were used to establish models of LPS-induced experimental endotoxemia. Mice were intraperitoneally injected 10 min prior to LPS injection with control (saline), atropine, pirenzepine and AF-DX116, respectively. Overall survival time was estimated using Kaplan-Meier plots. Inflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) was monitored at various intervals after LPS injection and individual reagent administration. Pathological alternations in lungs and liver were analyzed. Results: Pirenzepine and atropine pretreatment improved survival rate of LPS-induced septic shock; in contrast, AF-DX116 accelerated death from sepsis. Moreover, TNF-alpha plasma level was decreased in response to pirenzepine or atropine, whereas increased in response to AF-DX116. Pirenzepine and atropine relieved whereas AF-DX116 accelerated LPS-induced pulmonary and hepatic injury. Pirenzepine reduced proportion of M1 subtype of macrophages, while AF-DX116 promoted polarization of macrophages to M1 subtype. Pirenzepine pretreatment reduced while AF-DX116 enhanced expression of SOCS3 at mRNA level. Conclusions: The administration of pirenzepine and atropine may have beneficial effects on septic shock. (C) 2019 The Authors. Published by Elsevier B.V.
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