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  • Title: Naloxone does not antagonize leukocytic pyrogen.
    Author: Clark WG, Harris NF.
    Journal: Eur J Pharmacol; 1978 Jun 01; 49(3):301-4. PubMed ID: 658144.
    Abstract:
    In a crossover experiment, cats were given third cerebral ventricular injections of 500 microgram naloxone hydrochloride or saline vehicle followed in 15 min by i.v. injections of saline solution or leukocytic pyrogen. The pyrogen produced comparable fevers after both saline and naloxone pretreatment. Intravenous administration of naloxone hydrochloride (5 mg/kg) likewise did not prevent febrile responses to leukocytic pyrogen. These results indicate that endogenous opioid peptides are not likely central mediators of pyrogen-induced fevers.
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