Central mediators of the zymosan-induced febrile response

Author:

Bastos-Pereira Amanda Leite,Fraga Daniel,Dreifuss Arturo Alejandro,Zampronio Aleksander Roberto

Abstract

AbstractBackground:Zymosan is a fungal cell wall protein-carbohydrate complex that is known to activate inflammatory pathways through the Toll-like receptors and is commonly used to induce fever. Nevertheless, the central mediators that are involved in the zymosan-induced febrile response are only partially known.Methods:The present study evaluated the participation of prostaglandins, substance P, endothelin-1 (ET-1), and endogenous opioids (eOPs) in the zymosan-induced febrile response by using inhibitors and antagonists in male Wistar rats.Results:Both nonselective (indomethacin) and selective (celecoxib) cyclooxygenase inhibitors reduced the febrile response induced by an intraperitoneal (i.p.) injection of zymosan. Indomethacin also blocked the increase in the prostaglandin EConclusions:These results demonstrate that prostaglandins, substance P, ET-1, and eOPs are central mediators of the zymosan-induced febrile response.

Publisher

Walter de Gruyter GmbH

Subject

Drug Discovery,Pharmacology,General Medicine,Physiology

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