Presynaptic Acetylcholine Receptors Modulate the Time Course of Action Potential-Evoked Acetylcholine Quanta Secretion at Neuromuscular Junctions.

Autor:	Bukharaeva EA; Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre 'Kazan Scientific Centre of Russian Academy of Sciences', 2/31 Lobatchevsky Street, 420111 Kazan, Russia., Skorinkin AI; Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre 'Kazan Scientific Centre of Russian Academy of Sciences', 2/31 Lobatchevsky Street, 420111 Kazan, Russia., Samigullin DV; Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre 'Kazan Scientific Centre of Russian Academy of Sciences', 2/31 Lobatchevsky Street, 420111 Kazan, Russia.; Department of Radiophotonics and Microwave Technologies, Kazan National Research Technical University named after A.N. Tupolev, 420111 Kazan, Russia., Petrov AM; Kazan Institute of Biochemistry and Biophysics, Kazan Federal Scientific Centre 'Kazan Scientific Centre of Russian Academy of Sciences', 2/31 Lobatchevsky Street, 420111 Kazan, Russia.; Institute of Neuroscience, Kazan State Medical University, 49 Butlerova Street, 420012 Kazan, Russia.
Jazyk:	angličtina
Zdroj:	Biomedicines [Biomedicines] 2022 Jul 22; Vol. 10 (8). Date of Electronic Publication: 2022 Jul 22.
DOI:	10.3390/biomedicines10081771
Abstrakt:	For effective transmission of excitation in neuromuscular junctions, the postsynaptic response amplitude must exceed a critical level of depolarization to trigger action potential spreading along the muscle-fiber membrane. At the presynaptic level, the end-plate potential amplitude depends not only on the acetylcholine quanta number released from the nerve terminals in response to the nerve impulse but also on a degree of synchronicity of quanta releases. The time course of stimulus-phasic synchronous quanta secretion is modulated by many extra- and intracellular factors. One of the pathways to regulate the neurosecretion kinetics of acetylcholine quanta is an activation of presynaptic autoreceptors. This review discusses the contribution of acetylcholine presynaptic receptors to the control of the kinetics of evoked acetylcholine release from nerve terminals at the neuromuscular junctions. The timing characteristics of neurotransmitter release is nowadays considered an essential factor determining the plasticity and efficacy of synaptic transmission.
Databáze:	MEDLINE
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