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Subdiaphragmatic vagotomy reduces intake of sweet-tasting solutions in rats

Neural Regeneration Research 2013年第17期8卷 1560-1567页

作者： Enshe Jiang Dongming Yu Zhifen Feng Institute of Public Hygiene School of Nursing Henan University Department of Anatomy Medical College of Henan University

Studies have shown that there are strong interactions between gustatory and visceral sensations the central nervous system when rats ingest sweet foods or solutions. To investigate the role of th subdiaphragmatic vagi in transmitting general visceral information during the process of drinking sweet-tasting solutions, we examined the effects of subdiaphragmatic vagotomy on the intake of 0.5 mol/L sucrose, 0.005 mol/L saccharin or distilled water over the course of 1 hour in rats depriv~ of water. Results showed no significant difference in consumption of these three solutions in vagotomized rats. However, rats in the sham-surgery group drank more saccharin solution than sucrose solution or distilled water. Moreover, the intake of distilled water was similar between vagotomized rats and sham-surgery group rats, but significantly less sucrose and saccharin were consumed by vagotomized rats compared with rats in the sham-surgery group. These findings indicate that subdiaphragmatic vagotomy reduces intake of sweet-tasting solution in rats, and suggest that vagal and extravagal inputs play a balanced role in the control of the intake of sweet-tasting solutions. They also suggest that subdiaphragmatic vagotomy eliminates the difference in hedonic perception induced by sweet-tasting solutions compared with distilled water II E

关键词： neural regeneration peripheral nerve injury sweet taste visceral sensation vagotomy nucleus ofsolitary tract parabrachial nucleus intake hedonic grants-supported paper neuroregeneration

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