Abstract
In the framework of the kinetic model, the functioning of the cholinergic synapse is considered. The results of mathematical modeling of changes in the level of acetylcholine, induced pH impulse, the influence of the frequency of impulse transmission and inhibition of acetylcholinesterase are presented. Physicochemical explanation for a number of important physiological phenomena, such as neuromuscular paralysis, the molecular mechanism of neurological memory, and actions of nerve poisons and toxins, is given.
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REFERENCES
Rozengart, E.V., Basova, N.E., Moralev, S.N., et al., Research on cholinesterases in the Soviet Union and Russia: a historical perspective, Chem.-Biol. Interact., 2013, vol. 203, no. 1, pp. 3–9.
Nemukhin, A.V., Grigorenko, B.L., Morozov, D.I., et al., On quantum mechanical-molecular mechanical (QM/MM) approaches to model hydrolysis of acetylcholine by acetylcholinesterase, Chem.-Biol. Interact., 2013, vol. 203, no. 1, pp. 51–56.
Rosenberry, T.L., Mallender, W.D., Thomas, P.J., et al., A steric blockade model for inhibition of acetylcholinesterase by peripheral site ligands and substrate, Chem.-Biol. Interact., 1999, vols. 119–120, pp. 85–97.
Reed, M.C., Lieb, A., and Nijhout, H.F., The biological significance of substrate inhibition: a mechanism with diverse functions, BioEssays, 2010, vol. 32, pp. 422–429.
Shi, L., Fu, A.K.Y., and Ip, N.Y., Molecular mechanisms underlying maturation and maintenance of the vertebrate neuromuscular junction, Trends Neurosci., 2012, vol. 35, no. 7, pp. 441–453.
Tai, K., Bond, S.D., Macmillan, H.R., et al., Finite element simulations of acetylcholine diffusion in neuromuscular junctions, Biophys. J., 2003, vol. 84, no. 4, pp. 2234–2241.
Hasselmo, M.E., The role of acetylcholine in learning and memory, Curr. Opin. Neurobiol., 2006, vol. 16, no. 6, pp. 710–715.
Pirazzini, M., Rossetto, O., Eleopra, R., and Montecucco, C., Botulinum neurotoxins: biology, pharmacology, and toxicology, Pharmacol. Rev., 2017, vol. 69, pp. 200–235.
Papapetropoulos, S. and Singer, C., Botulinum toxin in movement disorders, Semin. Neurol., 2007, vol. 27, no. 2, pp. 183–194.
Lushchekina, S., Gubaydullina, A., Polomskih, V., et al., QM/MM of ChE-catalyzed reactions with special attention to OP inhibition, FEBS J., 2013, vol. 280, no. SI, suppl. 1, pp. 164–174.
Kassa, J., Review of oximes in the antidotal treatment of poisoning by organophosphorus nerve agents, J. Toxicol.: Clin. Toxicol., 2002, vol. 40, no. 6, pp. 803–816.
Varfolomeev, S.D., Semenova, N.A., Bykov, V.I., et al., Kinetics of chemical processes in the human brain. Modeling a BOLD signal in fMRI study, Dokl. Akad. Nauk, 2019, vol. 488, no. 2, pp. 157–161.
Komersova, A., Kovarova, M., Komers, K., et al., Why is the hydrolytic activity of acetylcholinesterase ph dependent? Kinetic study of acetylcholine and acetylthiocholine hydrolysis catalyzed by acetylcholinesterase from electric eel, Zeitschrift fur Naturforschung. C,J. Biosci., 2018, vol. 73, no. 10, pp. 345–351.
Aidoo, A. and Ward, K., Spatiotemporal concentration of acetylcholine in vertebrate synaptic cleft, Math. Comp. Model., 2006, vol. 44, pp. 952–962.
Dunant, Y. and Gisiger, V., Ultrafast and slow cholinergic transmission. Different involvement of acetylcholinesterase molecular forms, Molecules, 2017, vol. 22, no. 8, pp. 1300–1315.
Li, L. and McNamee, M.G., Modulation of nicotinic acetylcholine receptor channel by pH: a difference in ph sensitivity of torpedo and mouse receptors expressed in Xenopus oocytes, Cell. Mol. Neurobiol., 1992, vol. 12, no. 2, pp. 83–93.
Palma, A., Li, L., Chen, X., et al., Effects of pH on acetylcholine receptor function, J. Membr. Biol., 1991, vol. 120, pp. 67–73.
ACKNOWLEDGMENTS
This work was supported by the Russian Science Foundation (project no. 18-13-00030).
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Translated by M. Batrukova
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Varfolomeev, S.D., Bykov, V.I. & Tsybenova, S.B. Kinetics of Chemical Processes in the Human Brain. The Cholinergic Synapse—Mechanisms of Functioning and Control Methods. Dokl Biochem Biophys 492, 147–151 (2020). https://doi.org/10.1134/S1607672920030126
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DOI: https://doi.org/10.1134/S1607672920030126