Nitric oxide donors increase mucus gel thickness in rat stomach

JF Brown, PJ Hanson, BJR Whittle - European journal of pharmacology, 1992 - Elsevier
JF Brown, PJ Hanson, BJR Whittle
European journal of pharmacology, 1992Elsevier
Instillation of the nitric oxide (NO) generator isosorbide dinitrute (0.1–1 mM) into the nit
gastric lumen in vivo produced a dose-related increase in mucus gel thickness that was
prevented by coadministration of oxyhaemoglobin (10 μM). Isosorbide dinitrate did not
induce epithelial cell damage. S-Nitroso-N-acetyl-penicillamine (0.3 mM) and dihutyryl cyclic
GMP (1 mM) also increased mucus thickness. These findings, along with the presence of NO
synthase in the gastric mucosa, imply a role for NO in vivo in mediation of gastric mucus …
Abstract
Instillation of the nitric oxide (NO) generator isosorbide dinitrute (0.1–1 mM) into the nit gastric lumen in vivo produced a dose-related increase in mucus gel thickness that was prevented by coadministration of oxyhaemoglobin (10 μM). Isosorbide dinitrate did not induce epithelial cell damage. S-Nitroso-N-acetyl-penicillamine (0.3 mM) and dihutyryl cyclic GMP (1 mM) also increased mucus thickness. These findings, along with the presence of NO synthase in the gastric mucosa, imply a role for NO in vivo in mediation of gastric mucus release.
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