Physiological roles of the regulatory system of orexin-producing neurons
Project/Area Number |
20390067
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
General pharmacology
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Research Institution | Kanazawa University |
Principal Investigator |
SAKURAI Takeshi Kanazawa University, 医学系, 教授 (60251055)
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Co-Investigator(Kenkyū-buntansha) |
YAMANAKA Akihiro 大学共同利用法人・自然科学研究機構, 生理学研究所・細胞生理研究部門, 准教授 (60323292)
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Project Period (FY) |
2008 – 2010
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Project Status |
Completed (Fiscal Year 2010)
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Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2010: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2009: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2008: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
|
Keywords | オレキシン / 睡眠 / 覚醒 / GABA / TRH / 遺伝薬理学 / BRS-3b / ニューロテンシン / バソプレッシン / アセチルコリン |
Research Abstract |
We studied the physiological roles of the regulatory system of orexin-producing neurons. We examined the involvement of GABA_B receptors in the regulation of orexin neurons, by utilizing mice with a conditional deletion of the GABA_<B1> subunit in these neurons. The frequency of spontaneous fast TPSCs mediated by GABA_A receptors was markedly increased to compensate for an increase in orexin receptor-1 mediated excitation of local GABAergic interneurons. Sleep state analysis of the conditional GABA_<B1> knockout mice revealed that these mice displayed a robust fragmentation of the sleep/waking states. These observations suggest that pre- and postsynaptic GABA_B receptors in orexin neurons are essential for the normal regulation of orexin neuronal activity, and regulation of sleep/wakefulness states in vivo. We also revealed the involvement of BRS-3 in the regulation of orexin neuron. We also found that orexin-overexpresisng mice exhibit fragmentation of NREM sleep, suggesting the importance of inhibitory mechanisms of orexin neurons in maintenance of normal sleep.
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Report
(4 results)
Research Products
(97 results)
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[Journal Article] Hypothalamic orexin stimulates feeding-associated glucose utilization in skeletal muscle via sympathetic nervous system.2009
Author(s)
Shiuchi, T., Haque, M.S., Okamoto, S., Inoue, T., Kageyama, H., Lee, S, Toda, C., Suzuki, A., Bachman, E.S., Kim, Y-B., Sakurai, T., Yanagisawa, M., Shioda, S., Imoto, K., Minokoshi, Y.
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Journal Title
Cell Metab Dec 10(6)
Pages: 466-480
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[Journal Article] Thyrotropin-Releasing Hormone Increases Behavioral Arousal through Modulation of Hypocretin/Orexin Neurons.2009
Author(s)
Hara, J.Gerashchenko, D, Wisor, J.P.,Sakurai, T., Xie, X., Kilduff, T.S.
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Journal Title
J.Neurosci. 29(12)
Pages: 3705-3714
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[Journal Article] Selective loss of GABA_B receptors in orexin/hypocretin-producing neurons results in disrupted sleep/wakefulness architecture.2009
Author(s)
Matsuki, T., Nomiyama, M, Takahira, H., Hirashima, N., Kilduff, T.S., Kunita, S., Takahashi, S., Yagami, K., Bettler, B., Yanagisawa, M., Sakurai, T.
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Journal Title
Proc.Natl.Acad., Sci., USA. 106(11)
Pages: 4456-4464
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[Journal Article] IGFBP3 colocalizes with and regulates hypocretin (orexin).2009
Author(s)
Honda M, Eriksson KS, Zhang S, Tanaka S, Lin L, Salehi A, Hesla PE, Maehlen J, Gaus SE, Yanagisawa M, Sakurai T, Taheri S, Tsuchiya K, Honda Y, Mignot E.
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Journal Title
Related Report
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[Journal Article] Enhanced Orexin Signaling Prevents Diet-Induced Obesity and Improves Leptin Sensitivity.2009
Author(s)
Funato, H., Tsai, A., Willie, J.T., Kisanuki, Y., Williams, S.C., Sakurai, T., Yanagisawa, M.
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Journal Title
Cell Metab. 7;9(1)
Pages: 64-76
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[Journal Article] Identification of a population of sleep-active cerebral cortex neurons.2008
Author(s)
Gerashchenko, D., Wisor, J.P., Burns, D., Reh, R.K., Shiromani, P.J., Sakurai, T., delaIglesia, H.O., Kilduff, T.S.
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Journal Title
Proc.Natl.Acad., Sci., USA. 105
Pages: 10227-10232
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[Journal Article] Hypocretin/orexin and nociceptin/orphanin FQ coordinately regulate analgesia in a mouse model of stress-induced analgesia.2008
Author(s)
Xie X, Wisor JP, Hara J, Crowder TL, Lewinter R, Khroyan TV, Yamanaka A, Diano S, Horvath TL, Sakurai T, Toll L, Kilduff TS.
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Journal Title
J Clin Invest. 118(7)
Pages: 2471-2481
NAID
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[Journal Article] Enhanced BMP signaling results in supernumerary tooth formation in USAG-1 deficient mouse.2008
Author(s)
Murashima-Suginami, A., Takahashi, K., Sakata, T., Tsukamoto, H., Sugai, M., Yanagita, M., Shimizu, A., Sakurai, T., Slavkin, H.C., Bessho, K.
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Journal Title
Biochem Biophys Res Commun 369(4)
Pages: 1012-1016
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[Presentation] A decade of research on orexin.2009
Author(s)
桜井武
Organizer
The 36^<th> Congress of the International Union of Physiological Sciences
Place of Presentation
Kyoto International Conference Center, Kyoto
Year and Date
2009-07-29
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