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    Nitrendipine and stress-induced ulcers: Preliminary tudy
    (1997) Inalöz S.; Ozaydin M.; Sari I.; Cicek R.; Guney B.; Yenice N.
    Nitrendipine is a derivative of the dihydropyridine of calcium channel blockers and released for angina and hypertension. The therapeutic effect of nitrendipine was observed histologically against stress-induced gastric and duodenal ulcers in rats. Twenty-four male Wistar-albino rats were separated into three groups (n = 8), a control (non-stress) and two stress groups. The stressed group rats were exposed to starvation and cold-restraint in this study. The first stress group was given only a placebo whereas the second stress group was treated with nitrendipine. After treatment with nitrendipine, the total rea of the affected lesional mucosa was considerably reduced in both duodenal and gastric mucosa. Macroscopically, the surface area of the affected lesional mucosa was measured as 1/5 of the total duodenal mucosa. Moreover, the surface area of the affected lesional mucosa was measured as 1/8 of the total surface area in the stomach. In microscopic examination, tissue regeneration was conspicuous particularly in the gastric epithelium. A few hyperchromatic epithelial cells were noticed in some fields of the duodenal mucosa. Furthermore, tissue regeneration was not conspicuous as in the gastric mucosa. So we think that nitrendipine can be used in both gastric and duodenal stress ulcer treatment. However, in the healing process, therapeutic effect of nitrendipine was superior in stomach with conspicuous tissue regeneration.