Involvement of brain ketone bodies and the noradrenergic pathway in diabetic hyperphagia in rats > 2011

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Involvement of brain ketone bodies and the noradrenergic pathway in di…

채식영양

11-01-01 00:00 | 조회 1 | 댓글 0

https://pubmed.ncbi.nlm.nih.gov/21234734/[0]

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K. Iwata, M. Kinoshita, S. Yamada, T. Imamura, Y. Uenoyama, H. Tsukamura, et al. (2011). Involvement of brain ketone bodies and the noradrenergic pathway in diabetic hyperphagia in rats. The journal of physiological sciences : JPS, 61(2), 103-13. https://doi.org/10.1007/s12576-010-0127-6

PubMed 21234734

[Abstract]
Uncontrolled type 1 diabetes leads to hyperphagia and severe ketosis. This study was conducted to test the hypothesis that ketone bodies act on the hindbrain as a starvation signal to induce diabetic hyperphagia. Injection of an inhibitor of monocarboxylate transporter 1, a ketone body transporter, into the fourth ventricle normalized the increase in food intake in streptozotocin (STZ)-induced diabetic rats. Blockade of catecholamine synthesis in the hypothalamic paraventricular nucleus (PVN) also restored food intake to normal levels in diabetic animals. On the other hand, hindbrain injection of the ketone body induced feeding, hyperglycemia, and fatty acid mobilization via increased sympathetic activity and also norepinephrine release in the PVN. This result provides evidence that hyperphagia in STZ-induced type 1 diabetes is signaled by a ketone body sensed in the hindbrain, and mediated by noradrenergic inputs to the PVN.

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2011 목록
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