Research Project
Grant-in-Aid for Scientific Research on Innovative Areas (Research a proposed research project)
Output neurons of the striosome compartment of the striatum are one of the important components the neural pathway responsible for development and execution of stereotyped behaviors. They are exclusively equipped with μ-opioid receptors in the striatum. We found that prior blockade of protein kinase C (PKC) augments the suppressive effect of μ-opioid receptors (MORs) on the GABAergic inhibitory postsynaptic current (IPSC) in the MOR-rich striosomes of the striatum. Interestingly, Striatal medium spiny neurons have muscarinic acetylcholine receptor subtypes M1 and M4, among which M1 activates the phosphoinositide signaling pathway yielding PKC. We examined whether acetylcholine regulates MOR’s effects on presynaptic IPSC by binding to the M1 receptor, and found that IPSC suppression by the MOR agonist DAMGO was significantly augmented and prolonged by the PKC inhibitor chelerythrine and attenuated by the PKC activator PDBu. These results suggest that PKC activity modulates MOR’s effect via muscarinic receptors in the striosomes.
All 2012 2011 2010 2009 Other
All Journal Article (11 results) (of which Peer Reviewed: 7 results) Presentation (18 results) Remarks (3 results)
European Journal of Neuroscience
Volume: 35 Pages: 1396-1405
doi:10.1111/j.1460-9568.2012.08065.x
NeuroReport
Volume: 23(3) Pages: 184-188
DOI:10.1097/WNR.0b013e32834faab0
Clinical Neuroscience
Volume: Vol. 30 No.6 Pages: 697-699
https://www.chugaiigaku.jp/modules/shop/index.php?main_page=product_info&cPath=3_73&products_id=1260
Volume: 34 Pages: 1355-1367
doi:10.1111/j.1460-9568.2011.07873.x
Sleep and Biological Rhythms
Volume: 8(2) Pages: 114-119
DOI: 10.1111/j.1479-8425.2010.00435.x
Learning and Memory
Volume: 17 Pages: 176-185
doi: 10.1101/lm.16659010
Geriatrics and Gerontology International
Volume: 10(Suppl.1) Pages: 148-157
doi: 10.1111/j.1447-0594.2010.00588.x
生体の科学
Volume: 60(5) Pages: 4123-413
http://ej.islib.jp/ejournal/2425100895.html?
Nature Genetics
Volume: 41(6) Pages: 688-695
doi:10.1038/ng.344
Human Molecular Genetics
Volume: 18(4) Pages: 723-736
doi:10.1093/hmg/ddn403
Brain and Nerve
Volume: 61(4) Pages: 373-380
http://ej.islib.jp/ejournal/ 1416100461.html?
http://www.tmig.or.jp/