Biochimica et biophysica acta · 1996
Nitric oxide enhances cytotoxicity of cultured rabbit gastric mucosal cells induced by hydrogen peroxide.
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Hata Y, Ota S, Hiraishi H, Terano A, Ivey K J
Аннотация
While NO has been reported to act as a protective factor to gastric mucosa, it has been shown to be cytotoxic to various cells. NO also has been demonstrated to stimulate prostaglandin (PG) release and mucous glycoprotein secretion which could result in the activation of gastric defensive mechanisms. We examined the effect of NO on cytotoxicity induced by hydrogen peroxide, and mucous glycoprotein secretion and PGE2 release from cultured rabbit gastric mucosal cells. NO enhanced cytotoxicity induced by hydrogen peroxide. Defensive prostaglandin E2 release and mucous glycoprotein secretion were not altered by NO. Under certain circumstances, NO might behave as an aggressive factor in gastric mucosal injury.