Abstract
The contributions of two subclasses of excitatory amino acid transmitter receptors to the induction and expression of long-term potentiation (LTP) were analyzed in hippocampal slices. The quisqualate/kainate receptor antagonist DNQX (6,7-dinitroquinoxaline-2,3-dione) blocked 85% of the evoked field potential, leaving a small response that was sensitive to D-AP5 (D-2-amino-5-phosphonopentanoate), an N -methyl-D-aspartate (NMDA) receptor blocker. This residual D-AP5-sensitive response was of comparable size in control and previously potentiated inputs. High-frequency stimulation in the presence of DNQX did not result in the development of robust LTP. Washout of the drug, however, revealed the potentiation effect. Thus NMDA-mediated responses can induce, but are not greatly affected by, LTP; non-NMDA receptors, conversely, mediate responses that are not needed to elicit LTP but that are required for its expression.
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Dates
Type | When |
---|---|
Created | 18 years, 10 months ago (Oct. 5, 2006, 5:21 p.m.) |
Deposited | 1 year, 7 months ago (Jan. 13, 2024, 5:29 a.m.) |
Indexed | 2 days, 16 hours ago (Aug. 22, 2025, 12:47 a.m.) |
Issued | 36 years, 8 months ago (Dec. 23, 1988) |
Published | 36 years, 8 months ago (Dec. 23, 1988) |
Published Print | 36 years, 8 months ago (Dec. 23, 1988) |
@article{Muller_1988, title={Contributions of Quisqualate and NMDA Receptors to the Induction and Expression of LTP}, volume={242}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.2904701}, DOI={10.1126/science.2904701}, number={4886}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Muller, Dominique and Joly, Michel and Lynch, Gary}, year={1988}, month=dec, pages={1694–1697} }