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  • Title: Opiate receptor blockade in man reduces 2-deoxy-D-glucose-induced food intake but not hunger, thirst, and hypothermia.
    Author: Thompson DA, Welle SL, Lilavivat U, Pénicaud L, Campbell RG.
    Journal: Life Sci; 1982 Aug 30; 31(9):847-52. PubMed ID: 6294433.
    Abstract:
    Opioid peptides may act as neuromodulators in the central nervous system to conserve energy stores and water in mammals. To examine this hypothesis in man, the effect of opiate receptor blockade with naloxone on the hunger, thirst, and hypothermic response to 2-deoxy-D-glucose-induced glucoprivic stress was assessed. Opiate receptor blockade decreased stress-induced food intake but did not reduce marked increases in hunger produced by glucoprivation. Naloxone infusions did not change the hypercortisolemic, polydipsic, hypothermic, and thermogenic response to 2-deoxy-D-glucose. While these results do not suggest a major role for a beta-endorphin modulation of stress-induced hunger, hypothermia and water conservation, the reduction of food intake could be due to augmented satiety, perhaps associated with retardation of gastric emptying during opiate receptor blockade.
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