Research Project
Grant-in-Aid for Scientific Research (B)
In the present study, I studied on the molecular mechanisms regulating critical period development of the mouse somatosensory cortex using gene knockout mice. In particular, I focused on the roles played by NMDA-type glutamate receptor subunits GluRe2 (NR2B) and GLuRe4 (NR2D) and also by glutamate transporter GLAST and GLT1 in developmental appearance, critical period termination, critical period plasticity of somatosensory barrel structures. Here I found that, compared to wild-type control mice, heterozygous GlnRe2+/-mice showed one-day retardation in developmental appearance and critical period termination, whereas homozygous GluRe4-/-mice did on-day facilitation. No significant change was seen in the magnitude of critical period plasticity, as determined by row-C whisker cautery. In contrast, homozygous GLAST-/-and GLTI-/-mice displayed significant reduction in the magnitude of critical period plasticity, with normal developmental appearance and critical period termination. These results provide experimental evidence that N3IDA receptor activation regulates temporal properties of somatosensory development in a subunit-dependent manner, while transporters regulating extracellular glutamate concentration magnify critical period plasticity. Therefore, armed with the two mechanisms, synaptic refinement during development is shaped normally in a activity-dependent manner.
All 2007 2006 2005 Other
All Journal Article (98 results)
Mol. Cell. Biochem. (in press)
J. Neurosci. (in press)
Eur. J. Neurosci. (in press)
J. Neurobiol. (in press)
J. Physiol. (in press)
Biomed Res (in press)
130004903731
Biomed Res, (in press)
J. Comp. Neurol. 496
Pages: 303-313
Mol. Cell. Neurosci. 31
Pages: 326-333
J Neurosci. Methods 153
Pages: 276-282
J. Neurosci. 26
Pages: 2991-3001
120007186992
J. Neurochem. 97
Pages: 1431-1446
Eur. J. Neurosci. 23
Pages: 1427-1435
Pages: 4740-4751
J. Chem. Neuroanat. 31
Pages: 243-262
Autophagy 2
Pages: 200-208
Cell Tissue Res. 326
Pages: 35-42
EMBO J. 25
Pages: 2867-2877
Eur. J. Neurosci. 24
Pages: 750-760
Proc. Natl. Acad. Sci. USA 103
Pages: 10811-10816
FEBS Lett. 580
Pages: 4057-4064
Pages: 2177-2190
120000955769
Pages: 2246-2252
Pages: 12161-12166
Pharmacol. Res. 23
Pages: 1235-1242
J. Neurosci. 27
Pages: 496-506
Eur. J. Neurosci. (Corresponding author) 24
Proc. Natl. Acad, Sci. USA 103
Mol.Cell.Neurosci. (in press)
J.Comp.Neurol. (in press)
J.Neurosci.Methods (in press)
Proc.Natl.Acad.Sci.USA (in press)
EMBO report 6
Pages: 90-95
J. Comp. Neurol. 484
Pages: 249-259
Glia 52
Pages: 47-52
Eur. J. Neurosci. 21
Pages: 1432-1436
J. Neurosci. 25
Pages: 2146-2156
Pages: 8788-8793
Genes to Cells. 10
Pages: 785-792
Neuron 47
Pages: 201-213
J. Neurochem. 95
Pages: 294-304
Epilepsia 46
Pages: 152-158
Eur. J Neurosci. 22
Pages: 1445-1455
Pages: 9213-9226
Neurosci. Res. 53
Pages: 376-383
10017131285
Pages: 9782-9793
Nature Neurosci. 8
Pages: 1534-1541
Biomed. Res. 26
Pages: 271-278
130004903697
Proc. Natl. Acad. Sci. USA 102
Pages: 19180-19185
Clinical Neuroscience 23
Pages: 158-160
医学のあゆみ 212
Pages: 911-916
Pages: 1357-1360
Cilia 52
Proc. Natl. Acad. Sci., USA 102
J.Comp.Neurol. 484
Eur.J.Neurosci. 21
J.Neurosci. 25
Pages: 2143-2156
Genes to Cells 10
J.Neurochem. 95
Eur.J.Nerosci. 22
Neurosci.Res. 53
Biomed.Res. 26