title: Long-term potentiation and 4-aminopyridine.
abstract: Long-term potentiation (LTP) of excitatory postsynaptic potentials (epsp's) was investigated with extracellular field potential recording in hippocampal slices from rats. In the presence of 100 microM 4-aminopyridine (4-AP) the probability of eliciting LTP was unchanged or increased; the extent of potentiation was not significantly different from normal. During LTP saturation, 4-AP further enhanced the epsp. These data are inconsistent with an involvement of A-current reduction in LTP.
mesh_terms: D015761:4-Aminopyridine; D000631:Aminopyridines / Q000494:pharmacology*; D000818:Animals; D004558:Electric Stimulation; D005071:Evoked Potentials / Q000187:drug effects*; D006624:Hippocampus / Q000502:physiology*; D051381:Rats; D011919:Rats, Inbred Strains; D013997:Time Factors
chemical_list: D000631:Aminopyridines; D015761:4-Aminopyridine