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Article: Effect of a non-hydrolyzable analog of diadenosine polyphosphates on NMDA-mediated currents in isolated pyramidal neurons of the rat hippocampus
Title | Effect of a non-hydrolyzable analog of diadenosine polyphosphates on NMDA-mediated currents in isolated pyramidal neurons of the rat hippocampus |
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Authors | |
Keywords | Diadenosine polyphosphates Hippocampus NMDA Purinoceptors Pyramidal neurons Tyrosine kinase Zinc |
Issue Date | 2006 |
Publisher | S U B I S. |
Citation | Neurophysiology, 2006, v. 38 n. 3, p. 169-174 How to Cite? |
Abstract | Using a patch-clamp technique under voltage clamp conditions, we studied the effect of a non-hydrolyzable analog of diadenosine polyphosphates (AppCH2ppAs) on chemoactivated transmembrane currents through NMDA channels (NMDA currents) in isolated pyramidal neurons of the rat hippocampal CA3 zone. In 55.7% of the cases, AppCH2ppAs caused an increase in the peak amplitude of the currents induced by application of aspartate. In 39.5% of the cases, the agent exerted no effect, while in 4.8% these currents were suppressed. When studying the pharmacological effect of an increase in the amplitude of NMDA currents, we found that potentiation of these currents is mediated, first of all, by activation of P2 purinoceptors and is prevented by a blocker of tyrosine kinases, genistein. Receptor-channel NMDA complexes, due to their ability to be blocked by divalent cations, also contribute to the above effect of AppCH2ppA. Based on the data obtained, we conclude that AppCH2ppA influences NMDA receptors via activation of the P2 receptors and subsequent activation of tyrosine kinases; this leads to the modification of receptor-channel NMDA complexes and to the removal of their tonic blocking by zinc ions. © Springer Science+Business Media, Inc. 2006. |
Persistent Identifier | http://hdl.handle.net/10722/124516 |
ISSN | 2021 Impact Factor: 0.813 2020 SCImago Journal Rankings: 0.205 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Tsintsadze, VP | en_HK |
dc.contributor.author | Fedorenko, AL | en_HK |
dc.contributor.author | Tsintsadze, TSh | en_HK |
dc.contributor.author | Wright, M | en_HK |
dc.contributor.author | Tanner, JA | en_HK |
dc.contributor.author | Miller, AD | en_HK |
dc.contributor.author | Lozovaya, NA | en_HK |
dc.date.accessioned | 2010-10-31T10:38:50Z | - |
dc.date.available | 2010-10-31T10:38:50Z | - |
dc.date.issued | 2006 | en_HK |
dc.identifier.citation | Neurophysiology, 2006, v. 38 n. 3, p. 169-174 | en_HK |
dc.identifier.issn | 0090-2977 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/124516 | - |
dc.description.abstract | Using a patch-clamp technique under voltage clamp conditions, we studied the effect of a non-hydrolyzable analog of diadenosine polyphosphates (AppCH2ppAs) on chemoactivated transmembrane currents through NMDA channels (NMDA currents) in isolated pyramidal neurons of the rat hippocampal CA3 zone. In 55.7% of the cases, AppCH2ppAs caused an increase in the peak amplitude of the currents induced by application of aspartate. In 39.5% of the cases, the agent exerted no effect, while in 4.8% these currents were suppressed. When studying the pharmacological effect of an increase in the amplitude of NMDA currents, we found that potentiation of these currents is mediated, first of all, by activation of P2 purinoceptors and is prevented by a blocker of tyrosine kinases, genistein. Receptor-channel NMDA complexes, due to their ability to be blocked by divalent cations, also contribute to the above effect of AppCH2ppA. Based on the data obtained, we conclude that AppCH2ppA influences NMDA receptors via activation of the P2 receptors and subsequent activation of tyrosine kinases; this leads to the modification of receptor-channel NMDA complexes and to the removal of their tonic blocking by zinc ions. © Springer Science+Business Media, Inc. 2006. | en_HK |
dc.language | eng | en_HK |
dc.publisher | S U B I S. | - |
dc.relation.ispartof | Neurophysiology | en_HK |
dc.subject | Diadenosine polyphosphates | en_HK |
dc.subject | Hippocampus | en_HK |
dc.subject | NMDA | en_HK |
dc.subject | Purinoceptors | en_HK |
dc.subject | Pyramidal neurons | en_HK |
dc.subject | Tyrosine kinase | en_HK |
dc.subject | Zinc | en_HK |
dc.title | Effect of a non-hydrolyzable analog of diadenosine polyphosphates on NMDA-mediated currents in isolated pyramidal neurons of the rat hippocampus | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0142-8241&volume=38&issue=3&spage=169&epage=174&date=2006&atitle=Effect+of+a+non-hydrolyzable+analog+of+diadenosine+polyphosphates+on+NMDA-mediated+currents+in+isolated+pyramidal+neurons+of+the+rat+hippocampus | en_HK |
dc.identifier.email | Tanner, JA:jatanner@hku.hk | en_HK |
dc.identifier.authority | Tanner, JA=rp00495 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1007/s11062-006-0041-y | en_HK |
dc.identifier.scopus | eid_2-s2.0-37849188621 | en_HK |
dc.identifier.hkuros | 178699 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-37849188621&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 38 | en_HK |
dc.identifier.issue | 3 | en_HK |
dc.identifier.spage | 169 | en_HK |
dc.identifier.epage | 174 | en_HK |
dc.identifier.isi | WOS:000487337600004 | - |
dc.identifier.scopusauthorid | Tsintsadze, VP=14039705700 | en_HK |
dc.identifier.scopusauthorid | Fedorenko, AL=14828803100 | en_HK |
dc.identifier.scopusauthorid | Tsintsadze, TSh=6602181172 | en_HK |
dc.identifier.scopusauthorid | Wright, M=11139776500 | en_HK |
dc.identifier.scopusauthorid | Tanner, JA=35513993000 | en_HK |
dc.identifier.scopusauthorid | Miller, AD=7406230808 | en_HK |
dc.identifier.scopusauthorid | Lozovaya, NA=6701834046 | en_HK |
dc.identifier.citeulike | 1053406 | - |
dc.identifier.issnl | 0090-2977 | - |