Presynaptic voltage-gated calcium channels in the auditory brainstem.
Presynaptic voltage-gated calcium channels in the auditory brainstem.
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DOI:
10.1016/j.mcn.2021.103609
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发表时间:
2021-04
期刊:
影响因子:
--
通讯作者:
Veeraraghavan P
中科院分区:
文献类型:
--
作者:
Young SM Jr;Veeraraghavan P
Sound information encoding within the initial synapses in the auditory brainstem requires reliable and precise synaptic transmission in response to rapid and large fluctuations in action potential (AP) firing rates. The magnitude and location of Ca2+ entry through voltage-gated Ca2+ channels (CaV) in the presynaptic terminal are key determinants in triggering AP-mediated release. In the mammalian central nervous system (CNS), the CaV2.1 subtype is the critical subtype for CNS function, since it is the most efficient CaV2 subtype in triggering AP-mediated synaptic vesicle (SV) release. Auditory brainstem synapses utilize CaV2.1 to sustain fast and repetitive SV release to encode sound information. Therefore, understanding the presynaptic mechanisms that control CaV2.1 localization, organization and biophysical properties are integral to understanding auditory processing. Here, we review our current knowledge about the control of presynaptic CaV2 abundance and organization in the auditory brainstem and impact on the regulation of auditory processing.
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