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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): 13-24


Peculiarities of distribution of nos-con-taining neurons in the medullary cardio-vascular centers of dogs and rats

V.V. Datsenko, V.B. Pavlyuchenko, A.A. Moibenko,A.I. Pilyavskii, A.I Kostyukov, V.A. Maisky

    А.А.Bogomoletz Institute of Physiology, National Academyof Sciences of Ukraine, Kiev


Abstract

The aim of the study was to characterize species-related differences in the distribution of nitric oxide synthase (NOS)-containing neurons in the medullary structures of dogs and rats involved in the regulation of the sympathetic or parasympathetic drives. Two main results have been obtained, namely: (i) the average number of NOS-containing neurons in the dorsomedial and ventrolateral medulla per section in dog was larger than that in rat, while the density of the positive cells in the both regions in dog was less than that in rat. (ii) Within the dorsal motor nucleus of vagus a lot of NOS-containing cells (preganglionic vagal neurons) were observed only in dog. Differences in the distribution of NO-generating neurons in the medullary cardiovascular centers, and heterogeneity in the basal level of NO release may contribute to the peculiarities of the hemodynamic responses induced by NOS inhibitors in these species.

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