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  • Title: Prostaglandins in the brain of rats given, acutely, and chronically, a hyperthermic dose of met-enkephalin.
    Author: Scoto GM, Spadaro C, Spampinato S, Arrigo-Reina R, Ferri S.
    Journal: Psychopharmacology (Berl); 1979 Jan 31; 60(2):217-9. PubMed ID: 106433.
    Abstract:
    An enhanced prostaglandinlike activity is shown in homogenates of brain from rats treated intracerebroventricularly with 100 microgram of metenkephalin. The increase is significantly reduced by naloxone pretreatment. A relationship is proposed between generation of prostaglandins in the brain following met-enkephalin administration and hyperthermic effect of the opiatelike factor in the rat. Normalization of prostaglandinlike activity following chronic administration of met-enkephalin in the rat may also account for the development of tolerance to its thermic effect.
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