{"title":"The effects of pretreatment with stomach extract on the incidence of X-ray-induced gastric tumor in ICR mice.","authors":"H Watanabe, M Naito, K Kawashima, A Ito","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>The effect of crude stomach extracts (CSE) on X-ray-induced gastric tumorigenesis was examined. ICR mice were treated with two or four administrations of CSE at one-week intervals then irradiated with 20 Gy of X-rays one week after the final CSE administration. Unexpectedly, the incidence of X-ray-induced tumors was not significantly altered by two CSE pretreatments but was markedly reduced by four CSE pretreatments. Similarly, erosion and squamous metaplasia produced in the glandular stomach a week after X-irradiation were markedly diminished by four CSE pretreatments but not by two CSE pretreatments.</p>","PeriodicalId":12660,"journal":{"name":"Gan","volume":"75 10","pages":"884-8"},"PeriodicalIF":0.0000,"publicationDate":"1984-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gan","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The effect of crude stomach extracts (CSE) on X-ray-induced gastric tumorigenesis was examined. ICR mice were treated with two or four administrations of CSE at one-week intervals then irradiated with 20 Gy of X-rays one week after the final CSE administration. Unexpectedly, the incidence of X-ray-induced tumors was not significantly altered by two CSE pretreatments but was markedly reduced by four CSE pretreatments. Similarly, erosion and squamous metaplasia produced in the glandular stomach a week after X-irradiation were markedly diminished by four CSE pretreatments but not by two CSE pretreatments.
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