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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. 2011; 57(1): 21-28


Mechanisms ofcontractile action of acetylcholine on hepatic veins

P.I. Yanchuk, T.P. PR.khodko, O.M. Pasichnichenko, A.A. Terekhov, V.O.tsybenko

    Київ. нац. ун-т ім. Тараса Шевченка


Abstract

In acute experiments on anesthetized rats, acetylcholine (Ach) constricts hepatic venous vessels, causing blood mobilization from the liver, and dilates the sphincters of hepatic veins at the exit from this organ, contributing to the intensification of the outflow of blood deposited in the liver. Vasoconstrictor reactions of capacitive vessels of the liver to Ach are realized through M-cholinoreceptors on endotheliocytes with further involvement of messenger, possibly noradrenaline, which ac­tivates a-adrenoreceptors on smooth muscle cells (SMC) of capasitive vessels. Dilation of Hv sphincters is carried out due to Ach-induced release of messenger in the vessel wall, prob­ably adrenaline, which in turn activates b-adrenoreceptors on SMC of the Hv. It is possible, that in such reaction partially involved NO.

Keywords: acetylcholine, hepatic veins, contractile reactions,M-cholinoreceptors, ?- and ?-adrenoreceptors.

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