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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. 2003; 49(5): 52-57


Effects of modulator of sygnaltransmission from opioid receptorto sodium channels on self-stimula-tion of hypotalamus

I.P. Bytkevich, V.A. Michaylenko, B.V. Krylov,V.N. Kazakov, T.I. Panova

    I.P.Pavlov Institute of Physiology RAN, St.Petersburg;Donetsk Medical University


Abstract

We investigated effects of different doses of a new preparation comenic acid as a modulator of the transmission of signals from an opioid receptor to slow sodium channels on the hypothalamic rewarding system in male Wistar rats. Comenic acid has been shown to inhibit the reaction of the hypothalamic self-stimulation (SS) in a dose-dependent fashion with the strongest effect at doses of 28,8 - 30 mg/kg. We observed a decrease in the rate of lever-pressings , induced by the threshold for SS current intensity, and an increase in the threshold for the response of SS, or its cessation. The similar suppressing effect of the preparation was found at its repeated injections. Thus, those results showed that comenic acid failed in both activation of the rewarding system of the lateral hypothalamus and adaptation to it.

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