title: N-methyl-D-aspartate (NMDA) receptors are inactivated by trypsin.
abstract: Acute isolation of hippocampal CA3 pyramidal cells using trypsin produces neurons which respond to kainate and quisqualate but not N-methyl-D-aspartate (NMDA). Incubation of 6- to 12-day-old cultured hippocampal neurons or slices of pyriform cortex with trypsin irreversibly removes the NMDA responses normally present without significant effect on responses to kainate or quisqualate. These data indicate that the NMDA receptor has a trypsin-sensitive component which is necessary for agonist recognition or ion channel activation.
authors.affiliation: Wadsworth Center for Laboratories and Research, New York State Department of Health, Albany 12201-0509.
authors.forename: C N
authors.initials: CN
authors.lastname: Allen
authors.forename: R
authors.initials: R
authors.lastname: Brady
authors.forename: J
authors.initials: J
authors.lastname: Swann
authors.forename: N
authors.initials: N
authors.lastname: Hori
authors.forename: D O
authors.initials: DO
authors.lastname: Carpenter
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001921:Brain / Q000187:drug effects / Q000502:physiology*; D002478:Cells, Cultured; D004622:Embryo, Mammalian; D005071:Evoked Potentials / Q000187:drug effects; D006624:Hippocampus / Q000187:drug effects / Q000502:physiology*; D009474:Neurons / Q000187:drug effects / Q000502:physiology*; D011712:Pyramidal Tracts / Q000187:drug effects / Q000502:physiology; D051381:Rats; D016194:Receptors, N-Methyl-D-Aspartate; D017981:Receptors, Neurotransmitter / Q000187:drug effects* / Q000378:metabolism; D012016:Reference Values; D014357:Trypsin / Q000494:pharmacology*
chemical_list: D016194:Receptors, N-Methyl-D-Aspartate; D017981:Receptors, Neurotransmitter; D014357:Trypsin