Intracellular calcium oscillation in cultured rat hippocampal neurons: a model for glutamatergic neurotransmission.
Neurons can form a synaptic network in culture and show spontaneous oscillation of intracellular Ca2+ concentration ([Ca2+]i). In the present study, spontaneous oscillation of [Ca2+]i was characterized in cultured hippocampal neurons. The oscillation was blocked completely by tetrodotoxin, 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX) and nicardipine, while DL-2-amino-5-phosphonovaleric acid (APV) showed only a partial depression of the increase in [Ca2+]i. These results suggest that the oscillation in [Ca2+]i is mainly mediated by non-N-methyl-D-aspartate (NMDA) type glutamatergic transmission. The oscillation of [Ca2+]i may be a good model for analyzing glutamatergic transmission and synapse formation.
Tanaka
T
T
Department of Chemical Pharmacology, University of Tokyo, Japan.
Saito
H
H
Matsuki
N
N
D015763:2-Amino-5-phosphonovalerate / Q000494:pharmacology; D018750:6-Cyano-7-nitroquinoxaline-2,3-dione / Q000494:pharmacology; D000818:Animals; D002118:Calcium / Q000378:metabolism*; D002121:Calcium Channel Blockers / Q000494:pharmacology; D002478:Cells, Cultured; D018691:Excitatory Amino Acid Antagonists / Q000494:pharmacology; D018698:Glutamic Acid / Q000378:metabolism*; D006624:Hippocampus / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D008959:Models, Neurological; D009474:Neurons / Q000187:drug effects / Q000378:metabolism; D009529:Nicardipine / Q000494:pharmacology; D051381:Rats; D017208:Rats, Wistar; D016194:Receptors, N-Methyl-D-Aspartate / Q000378:metabolism; D009435:Synaptic Transmission / Q000187:drug effects; D013779:Tetrodotoxin / Q000494:pharmacology
D002121:Calcium Channel Blockers; D018691:Excitatory Amino Acid Antagonists; D016194:Receptors, N-Methyl-D-Aspartate; D018698:Glutamic Acid; D013779:Tetrodotoxin; D018750:6-Cyano-7-nitroquinoxaline-2,3-dione; D015763:2-Amino-5-phosphonovalerate; D009529:Nicardipine; D002118:Calcium