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  • Title: Vagotomy reduces obesity in MSG-treated rats.
    Author: Balbo SL, Mathias PC, Bonfleur ML, Alves HF, Siroti FJ, Monteiro OG, Ribeiro FB, Souza AC.
    Journal: Res Commun Mol Pathol Pharmacol; 2000; 108(5-6):291-6. PubMed ID: 11958282.
    Abstract:
    In order to study the role of vagus nerve activity at the onset of obesity induced by monosodium glutamate (MSG), 30-day-old MSG-rats were vagotomized or sham operated. Body weight and food intake were recorded until animals were 90 days old and then sacrificed. Naso-anal length was recorded for all animals. Periepididymal and retroperitoneal fat pads were isolated and weighed. Reduction of body weight and naso-anal length were registered in 30-day-old MSG-rats. Obesity could also be observed, as increase of Lee index indicated. Results were most evident in 90-day-old MSG-rats. In both groups neither body weight gain nor food intake was changed by vagotomy. However, fat accumulation on tissues was reduced by vagotomy in MSG-rats. The results showed that MSG-obesity is not related to an increment in food intake behavior. Vagotonia might play a role at the onset of MSG-obesity.
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