Opioid Enhancement of Calcium Oscillations and Burst Events Involving NMDA Receptors and L-Type Calcium Channels in Cultured Hippocampal Neurons

This work was supported by National Institutes of Health Grants AA06420 (D.L.G.), DA03665 (G.R.S.), and Fullbright Fellowship 18619 (R.P.). We thank Jody Caguioa for technical assistance and performing some of the experiments, Floriska Chizer for secretarial assistance, Pfizer for the gift of ω-agatoxin IVA, and Novartis for the gift of CGP55845A.

Correspondence should be addressed to Dr. Donna Gruol, Department of Neuropharmacology, CVN 11, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037.

Dr. Przewlocki's present address: Department of Molecular Neuropharmacology, Institute of Pharmacology, SMETNA 12, 31-343 Krakow, Poland.