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Body weight gain is a worrying side effect of many new antipsychotic drugs. The mechanisms by which antipsychotic drugs increase weight in humans are not known. Attempts to model the metabolic effects of antipsychotic drugs in the animal have not been successful. Female rats appear to be sensitive to the effects of antipsychotics, but male rats less, and this does not match the clinical situation...
Dopamine (DA) signaling has been implicated in the control of energy balance and ingestive behavior. In the present study, we sought to characterize body weight, body fat and food intake regulation in a mouse with a targeted disruption of the dopamine-3 receptor gene (Drd3). In the first set of experiments male and female wild-type and mutant (Drd3-/-) mice were given access to two different diets...
Though not universally observed, moderately low-protein diets have been found to increase caloric intake and body fat. It appears that animals overeat in calories in order to obtain more dietary protein. For animals to control protein intake, they must be able to distinguish between two isocaloric diets containing different percentages of protein and make the appropriate dietary selection on the basis...
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