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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. 2014; 60(2): 51-56


Parameters of NO synthase system of gastric mucosa in rats under stress conditions and inhibition of cyclooxygenase

Fomenko IS, Bondarchuk TI, Bilets'ka LP, Panasiuk NB, Skliarov OIa

    D. Halytskyi National Medical University, Lviv, Ukraine
DOI: https://doi.org/10.15407/fz60.02.051

Abstract

In experiments on rats with modeled water-restrained stress, the influence of nonsteroidal anti-inflammatory drugs of different genesis on morphological status of gastric mucosa and changes of NO-synthase system parameters have been studied Administration of nonselective cyclooxygenese inhibitor naproxen in the water-restrained stress model in rats potentiated the increase of severity of damage of gastric mucosa. At the same time, the activity of both inducible and constitutive isoforms of NO-sythase decreased. The parameters of lipoperoxidation remained at the level observed during water-restrained stress. It was shown the advantages of the use of H2S-releasinfg nonsteroidal anti-inflammatory drug ATB-346, which are associated with its cytoprotective effect of the drug manifested by a decreased total area of gastric damage. However, parameters of lipoperoxidation and NOsyntase system did not differ substantially from those in the group treated with napoxen, indicating the prevalence of parent molecule (naproxen) in regulation of function of NO-system Administration of dual COX/LOX inhibitor, the compound 2A5DHT, caused a decrease of gastric damage as compared to the effect of naproxen. The activity of iNOS remained much higher than under condition of the naproxen action.

Keywords: NSAIDs, stress, nitric oxide, gastric mucosa.

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