Antisecretory effect of hydrogen sulfide on gastric acid secretion and the involvement of nitric oxide

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Abstract

The present study was designed to investigate the effect of H2S on distention-induced gastric acid secretion. Fifty-two rats were randomly assigned to seven experimental groups. The gastric acid secretion was stimulated by gastric distention. Two groups of rats received L-cysteine or saline for 5 days before stimulation of the gastric acid secretion. Two groups of animals also received NaHS or saline just prior to stimulation of the gastric acid secretion. The effect of L-NAME and propargylglycine was also investigated. The mucosal levels of the gene expression of cyclooxygenase-2 (COX-2), endothelial nitric oxide synthase (eNOS), and H+/K+-ATPase α-subunit were quantified by qPCR and luminal concentrations of NO were determined. NaHS and L-cysteine decreased the gastric acid output in response to distention. The mRNA expression of H+/K+-ATPase α-subunit decreased by NaHS and L-cysteine as compared with the control group while gene expression of eNOS and COX-2 was upregulated. The inhibitory effect of NaHS on distention-induced gastric acid secretion was mitigated by pretreatment of L-NAME. These findings suggest the involvement of NO in mediating the antisecretory effect of H2S. © 2014 Seyyed Ali Mard et al.

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APA

Mard, S. A., Askari, H., Neisi, N., & Veisi, A. (2014). Antisecretory effect of hydrogen sulfide on gastric acid secretion and the involvement of nitric oxide. BioMed Research International, 2014. https://doi.org/10.1155/2014/480921

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