| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
The ventromedial hypothalamus (VMH) is known to play an important role in feeding behavior and sympathetic nerve activity (SNA) control, however, the details of its involvement are unclear. VMH neurons express receptors of various neuropeptides that are involved in the regulation of feeding behavior. We herein report the identification of novel neuron groups that showed oscillations on both sides of the VMH on hypothalamus slice preparations from rats. The application of feeding peptides and changes in extracellular glucose concentration induced frequency changes in VMH oscillation, similar to the changes in the SNA induced by the application of those compounds in brain. The VMH oscillation frequency also corresponded to a low range of heart rate variability which is one of the indexes of SNA. We hypothesize that the VMH oscillation is involved in SNA and that its regulation could be a new strategy for control of energy expenditure and eventually obesity.
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