Posterodorsal amygdaloid lesions in rats: long-term effects on body weight |
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Authors: | BM King JT Cook KN Rossiter LM Theobold H Sam |
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Affiliation: | Department of Psychology, University of New Orleans, LA 70148, USA. |
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Abstract: | Bilateral lesions in the most posterodorsal aspects of the amygdala in female rats resulted in immediate and dramatic weight gains on a standard lab chow diet. The rate of weight gain returned to normal by Day 20, but the difference in body weight between animals with amygdaloid lesions and those with sham lesions was maintained for the duration of the study (60 days). Because rats with posterodorsal amygdaloid lesions have also been found to be hyperinsulinemic, it is hypothesized that the lesions result in a similar, though smaller, version of the syndrome that follows lesions of the ventromedial hypothalamus. |
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