A New Tellurium- and Selenoorganic Compound as an Inhibitor of Acetylcholinesterase in Brain
- Authors: Klichkhanov N.K.1, Dzhafarova A.M.1, Ramazanova P.A.1, Ali A.M.1, Abakarov G.M.1, Dzharaeva M.M.1
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Affiliations:
- Department of Biochemistry and Biophysics, Dagestan State University
- Issue: Vol 168, No 2 (2019)
- Pages: 229-232
- Section: Biophysics and Biochemistry
- URL: https://journals.rcsi.science/0007-4888/article/view/242375
- DOI: https://doi.org/10.1007/s10517-019-04680-0
- ID: 242375
Cite item
Abstract
We studied the effect of a new cyanine dye containing selenium and tellurium on acetylcholinesterase activity in synaptic membrane in rat brain. The cyanine dye dose-dependently inhibits activity of this enzyme, and the concentration of half-maximal inhibition of acetylcholinesterase activity was 20.46 μM. The cyanine dye instantly inhibits the enzyme; the degree of inhibition depends on acetylthiocholine concentration: the lower is acetylthiocholine concentration, the higher is the degree of inhibition. On the Lineweaver—Burk plot, the concentration dependence curves of acetylcholinesterase with and without cyanine dye intersect in one point on the abscissa axis. In this case, the cyanine dye reduces the maximum inhibition rate (Vmax) and does not affect Michaelis constant (Km). The calculated inhibition constant Ki for the cyanine dye is 7.74 μM. Thus, the cyanine dye is a non-competitive inhibitor of acetylcholinesterase.
About the authors
N. K. Klichkhanov
Department of Biochemistry and Biophysics, Dagestan State University
Author for correspondence.
Email: klich-khan@mail.ru
Russian Federation, Makhachkala, Republic of Dagestan
A. M. Dzhafarova
Department of Biochemistry and Biophysics, Dagestan State University
Email: klich-khan@mail.ru
Russian Federation, Makhachkala, Republic of Dagestan
P. A. Ramazanova
Department of Biochemistry and Biophysics, Dagestan State University
Email: klich-khan@mail.ru
Russian Federation, Makhachkala, Republic of Dagestan
A. M. M. Ali
Department of Biochemistry and Biophysics, Dagestan State University
Email: klich-khan@mail.ru
Russian Federation, Makhachkala, Republic of Dagestan
G. M. Abakarov
Department of Biochemistry and Biophysics, Dagestan State University
Email: klich-khan@mail.ru
Russian Federation, Makhachkala, Republic of Dagestan
M. M. Dzharaeva
Department of Biochemistry and Biophysics, Dagestan State University
Email: klich-khan@mail.ru
Russian Federation, Makhachkala, Republic of Dagestan