NEUROCHRMICAL MECHANISMS OF DISTURBANCES OF THE MENTAL PROCESSES UNDER LONG-TERM ADMINISTRATION OF GLUCOCORTICOIDS AND POSSIBLE ROUTES OF ITS CORRECTION

  • Ю. В. Сидорова M. Gorky Donetsk national medical university
  • Д. В. Евдокимов M. Gorky Donetsk national medical university
  • И. И. Абрамец M. Gorky Donetsk national medical university

Abstract

Chronical administration with drinking-water of dexamethasone at dose 0,5 mg/kg/day–1 throughout 7 days rendered anxiogenic and prodepressive action and inhibited acquirement and retrieval of attainment of active avoidance conditioned reaction. It was revealed at experiments on horisontal slices of the medial prefrontal cortex decreasing of amplitudes of the field EPSPs of pyramidal neurons of cortical V layer and amplitudes of its NMDA components. It was revealed moreover an inhibition of long-term potentiation expression but facilitation of development of long-term depression. The psychopharmacological drugs used in our experiments only partially attenuated behavioral and neurochemical disturbances produced by dexamethasone. Only Ca2+ antagonist verapamil removed the manifestation of dexamethasone neurotoxicity at cellular and systemic levels at moderate degree. The obtained data allow to counsel
verapamil for attenuation of mental manifestation of side action of dexamethasone massive doses.

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Published
2020-07-01
How to Cite
СИДОРОВА, Ю. В.; ЕВДОКИМОВ, Д. В.; АБРАМЕЦ, И. И.. NEUROCHRMICAL MECHANISMS OF DISTURBANCES OF THE MENTAL PROCESSES UNDER LONG-TERM ADMINISTRATION OF GLUCOCORTICOIDS AND POSSIBLE ROUTES OF ITS CORRECTION. Архив клинической и экспериментальной медицины, [S.l.], v. 25, n. 1, p. 27-35, july 2020. ISSN 1605-9360. Available at: <http://journal.dnmu.ru/index.php/akem/article/view/548>. Date accessed: 16 oct. 2025.
Section
Оригинальные исследования