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Effect of TRPV1 on Activity of Isoforms of Constitutive Nitric Oxide Synthase during Regulation of Bicarbonate Secretion in the Stomach

  • V. A. ZolotarevEmail author
  • Yu. V. Andreeva
  • R. P. Khropycheva
Article
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Application of mild irritants (1 M NaCl; pH 2.0) on the gastric mucosa potentiates the protective secretion of bicarbonates by epithelial cells. This response is mainly mediated by capsaicin-sensitive afferent nerve endings located in the submucosa. It was shown that activation of vanilloid type 1 receptors (TRPV1) induced by exogenous acidification of GM is not sufficient to potentiate the production of HCO3, including production depending on neuronal NO synthase. However, the effect of exogenous acid on TRPV1 leads to activation of endothelial NO synthase that restrict the gastric secretion of \( {\mathrm{HCO}}_3^{-} \).

Key Words

stomach bicarbonate secretion endothelial and neuronal NO synthases capsaicin TRPV1 

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • V. A. Zolotarev
    • 1
    Email author
  • Yu. V. Andreeva
    • 1
  • R. P. Khropycheva
    • 1
  1. 1.I. P. Pavlov Institute of Physiology, Russian Academy of SciencesSt. PetersburgRussia

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