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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. 2012; 58(5): 22-27


The changes of the activity of NO-synthases and oxidative processes under conditions of 5-HT receptors activation in the stomach and large intestine in streptozocin-induced diabetes mellitus

Skliarov OIa, Detsyk OI.

    Danylo Halytsky Lviv National Medical University, Ukraine


Abstract

We investigated the activity of NO-synthases, lipoperoxida-tion processes, antioxidant defense enzymes in the muscular layers of stomach and large intestine. The L-arginine concen­tration in blood plasma was also monitored under conditions of 2-weeks activation of 5-HT4 receptors by mosaprid in streptozocin-induced diabetes mellitus. We showed that the onset of diabetes mellitus is accompanied by a 2.4-2.8-fold increase in the activity of inducible NO-synthase and a 23-40% increase in the SOD activity. The nitric oxide content and TBA products in the muscular layers of stomach and large intestine were increased, whereas the motor-evacuational func­tion of the stomach and large intestine decreased. Activation of 5-HT4 receptors by mosaprid under conditions of diabetes mellitus decreased the activity of inducible NO-synthase, the lipoperoxidation processes, nitrite anion content and TBA products in muscular layers of stomach and large intestine by 23%. At the same time, we observed an increase in the motor-evacuational function of stomach and large intestine without affecting the blood sugar level.

Keywords: NO-synthase activity, lipoperoxidation processes,nitrite anion, muscular layers of the stomach and large intestine,streptozocin-induced diabetes mellitus, 5-HT4 receptors, mosaprid.

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