- Effects of calcium chelators on intracellular calcium and excitotoxicity.
Effects of calcium chelators on intracellular calcium and excitotoxicity.
In an attempt to probe the relationship between excitotoxicity and increases in intracellular calcium ([Ca2+]i), BAPTA-AM and its analogs were applied to cultured hippocampal neurons. Chelation of [Ca2+]i depressed and prolonged transient responses to glutamate and did not effect elevation of [Ca2+]i by prolonged exposure. This explains the inability of the chelators to prevent glutamate-induced toxicity.