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  • Title: Morphine-dependent rats: blockade of precipitated abstinence by tetrahydrocannabinol.
    Author: Hine B, Friedman E, Torrelio M, Gershon S.
    Journal: Science; 1975 Feb 07; 187(4175):443-5. PubMed ID: 1167428.
    Abstract:
    Male rats were implanted subcutaneously with a pellet containg 75 milligrams of morphine base or placebo, and naloxone hydrochloride (4 milligrams per kilogram of body weight) was administered 72 hours later. Treatment with delta-9-tetrahydrocannabinol (2, 5, or 10 milligrams per kilogram) 1 hour before maloxone administration significantly reduced the intensity of abstinence; the two higher doses blocked the appearance of wet shakes and escapes, diarrhea, and increased defecation. delta-9-Tetrahydrocannabinol did not induce abstinence itself, and prior treatment with cannabidiol was ineffective in reducing naloxoneprecipitated abstinence in animals with morphine pellets. These data suggest that delta-9-tetrahydrocannabinol may be of value in facilitating narcotic detoxification.
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