期刊
JOURNAL OF NEUROSCIENCE RESEARCH
卷 96, 期 3, 页码 335-347出版社
WILEY
DOI: 10.1002/jnr.24116
关键词
spontaneous release; minis; VGCC (voltage-gated calcium channels); calcium
资金
- NIGMS [R01 GM097433]
- U.S. Department of Veterans Affairs [BX002547]
- NHLBI [T32HL083808]
- NINDS [1F31NS083309]
Spontaneous release of neurotransmitters is regulated by extracellular [Ca2+] and intracellular [Ca2+]. Curiously, some of the mechanisms of Ca2+ signaling at central synapses are different at excitatory and inhibitory synapses. While the stochastic activity of voltage-activated Ca2+ channels triggers a majority of spontaneous release at inhibitory synapses, this is not the case at excitatory nerve terminals. Ca2+ release from intracellular stores regulates spontaneous release at excitatory and inhibitory terminals, as do agonists of the Ca2+-sensing receptor. Molecular machinery triggering spontaneous vesicle fusion may differ from that underlying evoked release and may be one of the sources of heterogeneity in release mechanisms.
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