Use of the most recent reagent (CuF) for stimulation of NO synthesis by the medicinal leech salivary cell secretion in the cultures of human endothelium сells (HUVEC) and in rat cardiomiocytes

Baskova I.P.1 , Alekseeva A.Yu.1, Kostyuk S.V.2 , Neverova M.E.2 , Smirnova T.D.2 , Veiko N.N.2

1. Biological Faculty, Lomonosov Moscow State University
2. Medical Genetic Research Center, Moscow
Section: Experimental/Clinical Study
DOI: 10.18097/pbmc20125801065      UDK: 57.085.19;57.033      PubMed Id: 22642153
Year: 2012  Volume: 58  Issue: 1  Pages: 65-76
The medicinal leech salivary cell secretion (SCS) may stimulate NO-production in cultures of human endothelium cells (HUVEC) and rat cardiomiocytes (RCM). This effect was detected using a NO specific reagent, - the complex Cu2+ with a fluorescein derivative (Cu-Fl). NO had also been detected in the cells by fluorescent electronic microscopy and determined quantitatively in the cells and in culture fluid by the fluorescence method. SCS stimulated NO synthesis in HUVEC cells (but not in RCM) is accompanied by NO release into intercellular space. Localization of NO synthesis сenters is presented and it is shown that the increase in NO levels during the SCS action on HUVEC and RCM is associated with the increase in the activity of eNOS/nNOS, but not iNOS. In endothelial cells SCS activates nitrosylation processes, assessed by the increase of nitrite-ions in the culture medium. It is therefore important to use Cu-Fl, other than Griss-reagent, during the first hour of analysis of NO synthesis. The NO-depended mechanism of SCS action on endothelial cells might be a factor in providing of its positive action in hirudotheraphy.
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Baskova I.P., Alekseeva A.Yu., Kostyuk S.V., Neverova M.E., Smirnova T.D., Veiko N.N. (2012) Biomeditsinskaya khimiya, 58(1), 65-76.
This paper is also available as the English translation:10.1134/S1990750813010022
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