Related Experiment Video
Updated: Jul 10, 2026

Registration of Calcium Transients in Mouse Neuromuscular Junction with High Temporal Resolution using Confocal Microscopy
Published on: December 1, 2021
Effect of L-type calcium channel blockers on activity of newly formed synapses in mice
O P Balezina1, P O Bogacheva, T Yu Orlova
1M. V. Lomonosov Moscow State University. balezina@mail.ru
Abstract:
Verapamil (5 microM), nifedipine (10 microM), and ryanodine (10 microM) potentiated rhythmic activity of newly formed synapses, while apamin produced no effect on this potentiation. Ryanodine (1 microM) suppressed synaptic activity, and this effect can be prevented with nifedipine. It was hypothesized that in newly formed synapses Ca2+ entry through L-type channels triggers the release of stored Ca2+, which inhibits secretion of the neurotransmitter.
Related Concept Videos
Ligand-Gated Ion Channel Receptor: Gating Mechanism
Antihypertensive Drugs: Action of Calcium Channel Blockers
Chemical Synapses
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Chemical Synapses
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Antiepileptic Drugs: Calcium Channel Blockers
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
Long-term Potentiation
Hebbian LTP
LTP can occur when presynaptic neurons...

