veratrine has been researched along with 4-desmethoxyverapamil* in 1 studies
1 other study(ies) available for veratrine and 4-desmethoxyverapamil
Article | Year |
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Participation of intracellular sites in the action of Ca2+ channel blockers.
The action of phenylalkylamine Ca2+ channel blockers D890 and D888 on Ca2+ uptake and neurotransmitter amino acid release were studied. D890, the quaternary derivative of D600, did not inhibit veratrine-induced 45Ca2+ uptake or the release of neurotransmitter amino acids from rat cerebrocortical synaptosomes, except at high concentrations (200 microM) when it was probably acting extracellularly in a non-specific manner. This contrasted with the more potent (10-50 microM) inhibitory actions of D600 and D888, and may be due to the inability of D890 to cross the synaptic plasma membrane. (-)D888 was shown to cross cell membranes and accumulate in the intracellular compartment of cerebrocortical slices and synaptosomes, where it was associated predominantly with the soluble cytoplasmic fraction. Topics: Amino Acids; Animals; Calcium Channel Blockers; Calcium Radioisotopes; Cerebral Cortex; Gallopamil; In Vitro Techniques; Potassium; Rats; Synaptosomes; Verapamil; Veratrine | 1986 |