PMID- 25788684 OWN - NLM STAT- MEDLINE DCOM- 20150615 LR - 20181113 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 35 IP - 11 DP - 2015 Mar 18 TI - Brain-derived neurotrophic factor inhibits calcium channel activation, exocytosis, and endocytosis at a central nerve terminal. PG - 4676-82 LID - 10.1523/JNEUROSCI.2695-14.2015 [doi] AB - Brain-derived neurotrophic factor (BDNF) is a neurotrophin that regulates synaptic function and plasticity and plays important roles in neuronal development, survival, and brain disorders. Despite such diverse and important roles, how BDNF, or more generally speaking, neurotrophins affect synapses, particularly nerve terminals, remains unclear. By measuring calcium currents and membrane capacitance during depolarization at a large mammalian central nerve terminal, the rat calyx of Held, we report for the first time that BDNF slows down calcium channel activation, including P/Q-type channels, and inhibits exocytosis induced by brief depolarization or single action potentials, inhibits slow and rapid endocytosis, and inhibits vesicle mobilization to the readily releasable pool. These presynaptic mechanisms may contribute to the important roles of BDNF in regulating synapses and neuronal circuits and suggest that regulation of presynaptic calcium channels, exocytosis, and endocytosis are potential mechanisms by which neurotrophins achieve diverse neuronal functions. CI - Copyright (c) 2015 the authors 0270-6474/15/354676-07$15.00/0. FAU - Baydyuk, Maryna AU - Baydyuk M AD - National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20892. FAU - Wu, Xin-Sheng AU - Wu XS AD - National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20892. FAU - He, Liming AU - He L AD - National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20892. FAU - Wu, Ling-Gang AU - Wu LG AD - National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20892 wul@ninds.nih.gov. LA - eng GR - Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Calcium Channel Agonists) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Calcium Channel Agonists/*pharmacology MH - Endocytosis/drug effects/*physiology MH - Excitatory Postsynaptic Potentials/drug effects/physiology MH - Exocytosis/drug effects/*physiology MH - Female MH - Male MH - Mice, Transgenic MH - Organ Culture Techniques MH - Presynaptic Terminals/drug effects/*physiology MH - Rats MH - Rats, Wistar PMC - PMC4363393 OTO - NOTNLM OT - BDNF OT - calcium channels OT - calyx of Held OT - endocytosis OT - exocytosis EDAT- 2015/03/20 06:00 MHDA- 2015/06/16 06:00 PMCR- 2015/09/18 CRDT- 2015/03/20 06:00 PHST- 2015/03/20 06:00 [entrez] PHST- 2015/03/20 06:00 [pubmed] PHST- 2015/06/16 06:00 [medline] PHST- 2015/09/18 00:00 [pmc-release] AID - 35/11/4676 [pii] AID - 2695-14 [pii] AID - 10.1523/JNEUROSCI.2695-14.2015 [doi] PST - ppublish SO - J Neurosci. 2015 Mar 18;35(11):4676-82. doi: 10.1523/JNEUROSCI.2695-14.2015.