Dr. Fiona J. Andrews

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The mechanisms of gastric mucosal injury following a period of ischemia remain unclear. The aim of this study was to determine the relative contributions of ischemia, reperfusion, and reactive oxygen metabolites to mucosal injury induced by temporary occlusion of the celiac artery. Rats were subjected to 30 min of gastric ischemia in the presence of 100 mM(More)
Nitric oxide appears to play an important role in maintaining gastric mucosal integrity. This study aimed to investigate whether a nitric oxide donor (sodium nitroprusside) or stimulation of endogenous nitric oxide synthesis (with acetylcholine) protects against gastric ischemia-reperfusion injury. Rats were subjected to 30 min of ischemia followed by 15(More)
Clinical studies have suggested that treatment with the prostaglandin E1 analog, misoprostol, leads to significant healing of ulcers in patients taking regular nonsteroidal antiinflammatory therapy. This study aimed to investigate mechanisms involved in this healing using a rat model. Gastric ulcers were induced by application of acetic acid using a(More)
Nonsteriodal antiinflammatory drugs initiate gastric ulceration and delay gastric ulcer healing. This study aimed to investigate the role of epithelial cell proliferation in delayed ulcer healing and to identify the most reproducible technique for measuring cell proliferation. Rats with acetic acid-induced gastric ulcers were treated for two weeks with(More)
This study aimed to investigate the effect of age on natural ulcer healing and delayed ulcer healing induced by nonsteroidal antiinflammatory drugs, using a rat model. Gastric ulcers were induced in young, adult, and aged rats using serosal or mucosal (kissing ulcers) application of acetic acid. Rats were treated with indomethacin 1 mg/kg/day subcutaneously(More)
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