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The investigation of the effects of topiramate on the hypothalamic levels of fat mass/obesity-associated protein and neuropeptide Y in obese female rats.

Nutr Neurosci. 2019 Apr;22(4):243-252. doi:10.1080/1028415X.2017.1374033. Epub 2017 Sep 15
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摘要


OBJECTIVE:The aim of the present study is to investigate the effects of topiramate on the fat mass/obesity-associated protein (FTO) and on the neuropeptide Y (NPY) level in the hypothalamus depending on the recently increased prevalence of obesity. METHOD:In this study, twenty-four female rats were divided into four equal groups: Non-obese control, obese control, non-obese topiramate, and obese topiramate. Obese groups were fed with a 40% high-fat diet. At the end of the 9th week, the drug treatment started and the subjects were treated with topiramate once a day for 6 weeks. All animals underwent cardiac perfusion under high-dose anesthesia on the 15th week. Tissues were analyzed using biochemical, histological, and stereological methods. RESULTS:In terms of neuron number in the arcuate nucleus area, a significant difference was observed among all groups (P < 0.01). The neuron number of the non-obese topiramate group was found to be significantly higher than that of the non-obese control group (P < 0.01). In the examination of the ventromedial nucleus of the entire group, it was observed that the neuron number of the non-obese control group was significantly lower than those of the other groups (P < 0.01). A significant increase in the NPY levels of the obese groups compared to the groups treated with topiramate was observed. Furthermore, the amount of the FTO protein increased in obese rats, while FTO and NPY levels decreased in the groups treated with topiramate. DISCUSSION:In conclusion, the mechanism of the effect of topiramate to create a state of obesity is thought to involve the decrease in the levels of NPY and FTO.

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