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- W2015161804 abstract "There is evidence demonstrating the protective effect of cGMP-specific phosphodiesterase type 5 (PDE5) inhibitors against ischemic injury in certain tissues. In this study, sildenafil, a potent inhibitor of PDE5, was tested for its beneficial effects in the prevention of disrupted ileal contractility and damage to tissue caused by intestinal ischemia-reperfusion in rats. Male Sprague-Dawley rats were divided into four groups: sham-operated; sham-operated with sildenafil pretreatment; ischemia-reperfusion with vehicle pretreatment; and ischemia-reperfusion with sildenafil pretreatment. The superior mesenteric artery was occluded for 45 min to induce ischemia. The clamp was then removed for a 60 min period of reperfusion. Sildenafil (1 mg/kg, i.v.) or saline was administered prior to the surgical procedure in the ischemia-reperfusion and sham-operated groups. Isometric contractions of the ileal segments in response to acetylcholine or electrical field stimulation (120 V, 2 ms pulse for 5 s, 1-20 Hz) were recorded. Additionally, levels of thiobarbituric acid reactive substances and myeloperoxidase activity were measured in addition to a histopathological examination of the ileal tissue. The contractions induced by both acetylcholine and electrical field stimulations were markedly inhibited after ischemia-reperfusion. Sildenafil pretreatment (1 mg/kg, i.v.) abolished the inhibition of responses to acetylcholine. The increased levels of thiobarbituric acid reactive substances and myeloperoxidase activity caused by ischemia-reperfusion were reversed to control levels with sildenafil pretreatment. Intestinal ischemia-reperfusion caused severe ischemic injury in rat ileum, which was prevented by sildenafil. These results suggest that sildenafil pretreatment has a protective effect against ileal dysfunction and damage induced by intestinal ischemia-reperfusion in the rat." @default.
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- W2015161804 date "2009-05-01" @default.
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- W2015161804 title "The effects of sildenafil on the functional and structural changes of ileum induced by intestinal ischemia–reperfusion in rats" @default.
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- W2015161804 doi "https://doi.org/10.1016/j.ejphar.2009.03.038" @default.
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