Biomaterial Database

Roles of NMDA receptor NR2A and NR2B subtypes for long-term depression in the anterior cingulate cortex. 2005

Hiroki Toyoda, and Ming-Gao Zhao, and Min Zhuo

Department of Physiology, University of Toronto, 1 King's College Circle, Toronto, Ontario M5S 1A8, Canada.

The anterior cingulate cortex (ACC) is thought to be important for the establishment, consolidation and retrieval of permanent memory. In many brain regions, including the hippocampus, it is suggested that long-term potentiation (LTP) and long-term depression (LTD), the cellular mechanisms for learning and memory, require the activation of glutamate N-methyl-D-aspartate receptors (NMDARs). In the hippocampus, the NR2A subunit is believed to be involved in the induction of LTP, whereas the NR2B subunit contributes to the formation of LTD. However, LTD has been less well studied in the ACC as compared with the hippocampus and little is known about the role of NMDA subtype receptors in cingulate LTD. Here we show that LTD can be induced by the combination of presynaptic stimulation with postsynaptic depolarization ('pairing training') in adult mouse ACC neurons. This form of LTD is an NMDAR- and voltage-dependent mechanism and a postsynaptic Ca2+ increase is required for the induction of LTD. Furthermore, our studies provide direct physiological evidence that both NR2A and NR2B subunits are involved in the induction of LTD in the ACC.

UI	MeSH Term	Description	Entries
D008810	Mice, Inbred C57BL	One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases.	Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D009474	Neurons	The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.	Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D011810	Quinoxalines		Quinoxaline
D002614	Chelating Agents	Chemicals that bind to and remove ions from solutions. Many chelating agents function through the formation of COORDINATION COMPLEXES with METALS.	Chelating Agent,Chelator,Complexons,Metal Antagonists,Chelators,Metal Chelating Agents,Agent, Chelating,Agents, Chelating,Agents, Metal Chelating,Antagonists, Metal,Chelating Agents, Metal
D004307	Dose-Response Relationship, Radiation	The relationship between the dose of administered radiation and the response of the organism or tissue to the radiation.	Dose Response Relationship, Radiation,Dose-Response Relationships, Radiation,Radiation Dose-Response Relationship,Radiation Dose-Response Relationships,Relationship, Radiation Dose-Response,Relationships, Radiation Dose-Response
D004347	Drug Interactions	The action of a drug that may affect the activity, metabolism, or toxicity of another drug.	Drug Interaction,Interaction, Drug,Interactions, Drug
D004558	Electric Stimulation	Use of electric potential or currents to elicit biological responses.	Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D006179	Gyrus Cinguli	One of the convolutions on the medial surface of the CEREBRAL HEMISPHERES. It surrounds the rostral part of the brain and CORPUS CALLOSUM and forms part of the LIMBIC SYSTEM.	Anterior Cingulate Gyrus,Brodmann Area 23,Brodmann Area 24,Brodmann Area 26,Brodmann Area 29,Brodmann Area 30,Brodmann Area 31,Brodmann Area 32,Brodmann Area 33,Brodmann's Area 23,Brodmann's Area 24,Brodmann's Area 26,Brodmann's Area 29,Brodmann's Area 30,Brodmann's Area 31,Brodmann's Area 32,Brodmann's Area 33,Cingulate Gyrus,Gyrus Cinguli Anterior,Retrosplenial Complex,Retrosplenial Cortex,Anterior Cingulate,Anterior Cingulate Cortex,Cingular Gyrus,Cingulate Area,Cingulate Body,Cingulate Cortex,Cingulate Region,Gyrus, Cingulate,Posterior Cingulate,Posterior Cingulate Cortex,Posterior Cingulate Gyri,Posterior Cingulate Gyrus,Posterior Cingulate Region,Superior Mesial Regions,24, Brodmann Area,Anterior Cingulate Cortices,Anterior Cingulates,Anterior, Gyrus Cinguli,Anteriors, Gyrus Cinguli,Area 23, Brodmann,Area 23, Brodmann's,Area 24, Brodmann,Area 24, Brodmann's,Area 26, Brodmann,Area 26, Brodmann's,Area 29, Brodmann,Area 29, Brodmann's,Area 30, Brodmann,Area 30, Brodmann's,Area 31, Brodmann,Area 31, Brodmann's,Area 32, Brodmann,Area 32, Brodmann's,Area 33, Brodmann,Area 33, Brodmann's,Area, Cingulate,Body, Cingulate,Brodmanns Area 23,Brodmanns Area 24,Brodmanns Area 26,Brodmanns Area 29,Brodmanns Area 30,Brodmanns Area 31,Brodmanns Area 32,Brodmanns Area 33,Cingulate Areas,Cingulate Bodies,Cingulate Cortex, Anterior,Cingulate Cortex, Posterior,Cingulate Gyrus, Anterior,Cingulate Gyrus, Posterior,Cingulate Region, Posterior,Cingulate Regions,Cingulate, Anterior,Cingulate, Posterior,Cinguli Anterior, Gyrus,Cinguli Anteriors, Gyrus,Complex, Retrosplenial,Cortex, Anterior Cingulate,Cortex, Cingulate,Cortex, Posterior Cingulate,Cortex, Retrosplenial,Gyrus Cinguli Anteriors,Gyrus, Anterior Cingulate,Gyrus, Cingular,Gyrus, Posterior Cingulate,Posterior Cingulate Cortices,Posterior Cingulate Regions,Posterior Cingulates,Region, Cingulate,Region, Posterior Cingulate,Retrosplenial Complices,Retrosplenial Cortices,Superior Mesial Region
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor