Intracerebroventricular injection of neuronal and inducible nitric oxide synthase inhibitors does not influence febrile response in rats during turpentine abscess

• Autorzy: Soszynski D. , Chelminiak M.
• Języki publikacji: EN

Abstrakty

EN

The purpose of this study was to investigate the role of neuronal nitric oxide synthase (nNOS) and inducible NOS (iNOS) in the brain during development of fever in response to localized tissue inflammation caused by injection of turpentine in freely moving biotelemetered rats. To determine the role of both NOSs in turpentine-induced fever, we injected vinyl-L-NIO (N5 – (1-Imino-3-butenyl) – ornithine (vL-NIO), a selective nNOS inhibitor, and aminoguanidine hydrochloride, a selective iNOS inhibitor, intracerebroventricularly (i.c.v.) 5 h after turpentine injection. Rats responded with fever to intramuscular injection of 20 µl of turpentine that commenced about 5 - 6 h after injection and reached peak value between 9 - 11 h post-turpentine. The inhibition of nNOS as well as iNOS in the brain did not affect fever induced by turpentine. Fevers in control rats (treated i.c.v. with pyrogen-free water) and iNOS or nNOS inhibitor-i.c.v. treated rats injected with turpentine were essentially the same. Furthermore, on the basis of these data, we concluded that iNOS and nNOS inside the brain do not participate in generation of fever to turpentine in rats.

Słowa kluczowe

EN

body temperature; nitric oxide synthase; inducible nitric oxide synthase; biotelemetry; turpentine; intracerebroventricular injection; rat; neuronal nitric oxide synthase; fever; aminoguanidine

• Wydawca: -
• Czasopismo: Journal of Physiology and Pharmacology
• Rocznik: 2007
• Tom: 58
• Numer: 4
• Opis fizyczny: p.657-667,fig.,ref.

Twórcy

autor

Soszynski D.

• The Ludwik Rydygier Collegium Medicum, Nicolaus Copernicus University in Torun, 24 Karlowicza Str., 85-092 Bydgoszcz, Poland

autor

Chelminiak M.