Research Project
Grant-in-Aid for Scientific Research (B)
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.
All 2011 2010 2009 2008 Other
All Journal Article (43 results) (of which Peer Reviewed: 23 results) Presentation (45 results) Book (7 results) Remarks (2 results)
PLOS One.
Volume: 6(2)
J Mol Neurosci.
Volume: 43(2) Pages: 217-224
J.Neurosci.
Volume: (In press)
Trend in Pharmacological Sciences
J Physiol. 588(Pt21)
Pages: 4117-4129
Ann N Y Acad Sci. 1200
Pages: 149-161
J Mol Neurosci. 43(2)
Pages: 155-161
J Mol Neurosci. 42(1)[Epub ahead of print]
Pages: 106-111
J Physiol.
Volume: 588(Pt 21) Pages: 4117-4229
Volume: 43(2) Pages: 155-161
Ann N Y Acad Sci.
Volume: 1200 Pages: 149-161
J.Mol.Neurosci. (in press)
Acta Physiol (Oxf) (in press)
Cell Metab Dec 10(6)
Pages: 466-480
Respir Physiol Neurobiol. 168(3)
Pages: 295-302
Brain Res. 25;1262
Pages: 25-37
J.Neurosci. 29(12)
Pages: 3705-3714
CNS Neurol Disord Drug Targets. 8(4)
Pages: 281-295
Proc.Natl.Acad., Sci., USA. 106(11)
Pages: 4456-4464
PLoS ONE. 4(1)
Cell Metab. 7;9(1)
Pages: 64-76
Pharmacol Rev. 61(2)
Pages: 162-176
Cell Metab 10
J. Neurosci. 29
Proc. Natl. Acad., Sci., USA. 106
Pages: 3930-3934
Pages: 4459-4464
PLoS ONE. 4
Cell Metab. 9
Eur J Neurosci. 28(7)
Pages: 1382-1393
Sleep 31(8)
Pages: 1119-1126
Proc.Natl.Acad., Sci., USA. 105
Pages: 10227-10232
J Clin Invest. 118(7)
Pages: 2471-2481
120001130328
Brain Res. 1205
Pages: 47-54
Biochem Biophys Res Commun 369(4)
Pages: 1012-1016
Diabetologia. 51(4)
Pages: 657-667
J Neurosci. 28
Pages: 11814-11818
Eur J Neurosci. 31
Regul Pept. 151
Pages: 147-152
Proc. Natl. Acad., Sci., USA. 105
J Clin Invest 118
Biochem Biophys Res Commun 369
Diabetologia. 51
http://web.kanazawa-u.ac.jp/~med05/