期刊
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 369, 期 1633, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rstb.2013.0133
关键词
long-term potentiation; interneurons; anti-Hebbian
类别
资金
- Wellcome Trust
- European Research Council
- MRC [MR/L01095X/1, MR/K000608/1, G0501424, G116/147, G0802158, G0801316] Funding Source: UKRI
- Medical Research Council [G116/147, G0801316, G0802158, G0501424, MR/L01095X/1, MR/K000608/1] Funding Source: researchfish
Several types of hippocampal interneurons exhibit a form of long-term potentiation (LTP) that depends on Ca2+-permeable AMPA receptors and group I metabotropic glutamate receptors. Several sources of evidence point to a presynaptic locus of LTP maintenance. The retrograde factor that triggers the expression of LTP remains unidentified. Here, we show that trains of action potentials in putative oriens-lacunosum-moleculare interneurons of the mouse CA1 region can induce long-lasting potentiation of stimulus-evoked excitatory postsynaptic currents that mimics LTP elicited by high-frequency afferent stimulation. We further report that blockers of nitric oxide production or TRPV1 receptors failed to prevent LTP induction. The present results add to the evidence that retrograde signalling underlies N-methyl-D-aspartate (NMDA) receptor-independent LTP in oriens interneurons, mediated by an unidentified factor.
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