PMID- 9464634 OWN - NLM STAT- MEDLINE DCOM- 19980424 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 238 IP - 3 DP - 1997 Dec 5 TI - Contributions of AMPA and GABA(A) receptors to the induction of NMDAR-dependent LTP in CA1. PG - 119-22 AB - The contributions of (+/-)-alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) and gamma-aminobutyric acid (GABA[A]) receptors in the induction of long-term potentiation (LTP) have been studied in the CA1 region of the rat hippocampus. The results suggest that: (1) in physiological conditions, AMPARs are necessary for the induction of N-methyl-D-aspartate receptor (NMDAR)-dependent LTP since LTP cannot be elicited in the presence of the AMPAR antagonist, 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX). Although a NMDAR-dependent LTP occurs in the presence of a GABA(A) antagonist and high concentrations of divalents cations, blockade of AMPARs leads to a voltage-dependent calcium channels (VDCC)-dependent LTP since its induction is blocked by nifedipine and not by APV. (2) The bicarbonate-induced GABA(A) receptor-mediated depolarizing response is not necessary in the induction of NMDAR-dependent or VDCC-dependent LTP since induction of these two types of LTP were not blocked by acetazolamide or in a nominally bicarbonate-free solution. FAU - Debray, C AU - Debray C AD - Institut National de la Sante et de la Recherche Medicale U-29, Paris, France. FAU - Diabira, D AU - Diabira D FAU - Gaiarsa, J L AU - Gaiarsa JL FAU - Ben-Ari, Y AU - Ben-Ari Y FAU - Gozlan, H AU - Gozlan H LA - eng PT - Journal Article PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Receptors, AMPA) RN - 0 (Receptors, GABA-A) RN - 6OTE87SCCW (6-Cyano-7-nitroquinoxaline-2,3-dione) RN - 76726-92-6 (2-Amino-5-phosphonovalerate) RN - I9ZF7L6G2L (Nifedipine) RN - Y37615DVKC (Bicuculline) SB - IM MH - 2-Amino-5-phosphonovalerate/pharmacology MH - 6-Cyano-7-nitroquinoxaline-2,3-dione/pharmacology MH - Animals MH - Bicuculline/pharmacology MH - Excitatory Postsynaptic Potentials/drug effects MH - Hippocampus/drug effects/*physiology MH - In Vitro Techniques MH - Long-Term Potentiation/*drug effects MH - Male MH - Nifedipine/pharmacology MH - Rats MH - Rats, Wistar MH - Receptors, AMPA/*physiology MH - Receptors, GABA-A/*physiology EDAT- 1998/02/17 00:00 MHDA- 1998/02/17 00:01 CRDT- 1998/02/17 00:00 PHST- 1998/02/17 00:00 [pubmed] PHST- 1998/02/17 00:01 [medline] PHST- 1998/02/17 00:00 [entrez] AID - S0304-3940(97)00865-3 [pii] AID - 10.1016/s0304-3940(97)00865-3 [doi] PST - ppublish SO - Neurosci Lett. 1997 Dec 5;238(3):119-22. doi: 10.1016/s0304-3940(97)00865-3.