Regulation of feeding behaviour in monosodium glutamate (MSG) treated mice.


Regulation of food intake was studied in mice treated neonatally with MSG. A diurnal pattern of food intake with a significantly greater nocturnal intake was observed. In response to restricted food availability (4 hours/day). MSG mice increased intake progressively although less efficiently than control mice. The opioid kappa receptor agonist ketocyclazocine enhanced food intake. It is concluded that in MSG treated mice opioid kappa receptor mechanisms involved with regulation of food intake are basically intact.


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