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Enhancement by Hydrogen Peroxide of Calcium Signals in Endothelial Cells Induced by 5-HT1B and 5-HT2B Receptor Agonists
Joint Authors
Goncharov, Nikolay V.
Nadeev, Alexander D.
Avdonin, Pavel V.
Mironova, Galina Yu.
Zharkikh, Irina L.
Avdonin, Piotr P.
Source
Oxidative Medicine and Cellular Longevity
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-11
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Hydrogen peroxide, formed in the endothelium, acts as a factor contributing to the relaxation of blood vessels.
The reason for this vasodilatory effect could be modulation by H2O2 of calcium metabolism, since mobilization of calcium ions in endothelial cells is a trigger of endothelium-dependent relaxation.
The aim of this work was to investigate the influence of H2O2 on the effects of Ca2+-mobilizing agonists in human umbilical vein endothelial cells (HUVEC).
We have found that H2O2 in concentration range 10-100 μM increases the rise of [Ca2+]i induced by 5-hydroxytryptamine (5-HT) and carbachol and does not affect the calcium signals of ATP, agonist of type 1 protease-activated receptor SFLLRN, histamine and bradykinin.
Using specific agonists of 5-HT1B and 5-HT2B receptors CGS12066B and BW723C86, we have demonstrated that H2O2 potentiates the effects mediated by these types of 5-HT receptors.
Potentiation of the effect of BW723C86 can be produced by the induction of endogenous oxidative stress in HUVEC.
We have shown that the activation of 5-HT2B receptor by BW723C86 causes production of reactive oxygen species (ROS).
Inhibitor of NADPH oxidases VAS2870 suppressed formation of ROS and partially inhibited [Ca2+]i rise induced by BW723C86.
Thus, it can be assumed that vasorelaxation induced by endogenous H2O2 in endothelial cells partially occurs due to the potentiation of the agonist-induced calcium signaling.
American Psychological Association (APA)
Avdonin, Pavel V.& Nadeev, Alexander D.& Mironova, Galina Yu.& Zharkikh, Irina L.& Avdonin, Piotr P.& Goncharov, Nikolay V.. 2019. Enhancement by Hydrogen Peroxide of Calcium Signals in Endothelial Cells Induced by 5-HT1B and 5-HT2B Receptor Agonists. Oxidative Medicine and Cellular Longevity،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1202305
Modern Language Association (MLA)
Avdonin, Pavel V.…[et al.]. Enhancement by Hydrogen Peroxide of Calcium Signals in Endothelial Cells Induced by 5-HT1B and 5-HT2B Receptor Agonists. Oxidative Medicine and Cellular Longevity No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1202305
American Medical Association (AMA)
Avdonin, Pavel V.& Nadeev, Alexander D.& Mironova, Galina Yu.& Zharkikh, Irina L.& Avdonin, Piotr P.& Goncharov, Nikolay V.. Enhancement by Hydrogen Peroxide of Calcium Signals in Endothelial Cells Induced by 5-HT1B and 5-HT2B Receptor Agonists. Oxidative Medicine and Cellular Longevity. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1202305
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1202305