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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2001; 47(5): 47-53


Specific gaba binding in the adrenals, and bloodand adrenal content of catecholamines under stress in intact rats and rats with inhibition offunctional activity of hypothalamo-pituitary-adrenocortical axis

T.M. Mishunina, O.V. Kalinichenko



Abstract

Forced swimming of intact rats was accompanied by an activation of the hormonal link in sympatho-adrenal system and by a decrease in the level of specific binding of 14C-GABA by adrenal plasma membranes; the former was prevented with the administration of GABAergic preparations (baclofen, GABA-taurine) before stress. Under inhibition of the function of hypothalamo-pituitary-adrenocortical axis following multiple hydrocortisone administration and, in presence of developing metabolic disorders and adrenal secretion of catecholamines, the latter reacted to stress by a decrease in adrenalin, noradrenaline and dopamine secretion without changing the intensity of specific binding of GABA. Administration of GABAergic preparations before stress prevented the development of stress disorders of noradrenaline and dopamine secretion partially or completely, and sodium thiosulphate administration increased acutely specific binding of GABA with adrenal plasma membranes simultaneously preventing the accumulation of adrenal noradrenaline and the decrease in blood DOPA level.

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