Abstract
Mossy fiber synaptic transmission at hippocampal CA3 pyramidal cells and interneurons was compared in rat brain slices to determine whether mossy terminals are functionally equivalent. Tetanic stimulation of mossy fibers induced long-term potentiation in pyramidal neurons but was either without effect or it induced depression at synapses onto interneurons. Unlike transmission onto pyramidal neurons, transmission onto interneurons was not potentiated after adenosine 3′,5′-monophosphate (cAMP) activation. Furthermore, metabotropic glutamate receptor depression of transmission onto interneurons did not involve cAMP-dependent pathways. Thus, synaptic terminals arising from a common afferent pathway do not function as a single compartment but are specialized, depending on their postsynaptic target.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 27, 2002, 5:42 a.m.) |
Deposited | 1 year, 7 months ago (Jan. 13, 2024, 12:56 a.m.) |
Indexed | 1 month, 3 weeks ago (July 8, 2025, 12:08 a.m.) |
Issued | 27 years, 6 months ago (Feb. 27, 1998) |
Published | 27 years, 6 months ago (Feb. 27, 1998) |
Published Print | 27 years, 6 months ago (Feb. 27, 1998) |
@article{Maccaferri_1998, title={Target-Specific Expression of Presynaptic Mossy Fiber Plasticity}, volume={279}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.279.5355.1368}, DOI={10.1126/science.279.5355.1368}, number={5355}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Maccaferri, Gianmaria and Tóth, Katalin and McBain, Chris J.}, year={1998}, month=feb, pages={1368–1371} }