INTRODUCTION Since 1982,Helicobacter pylori(Hp) has been successfully isolated and cultured,and the fact many diseases such as gastritis,peptic ulcer,gastric carcinoma
In most publications,animal models of diabetes have mainly been investigated for their multiple etiologies as well as for changes leading to diabetes and their genetic derivation.Aspects which seem important and need ...In most publications,animal models of diabetes have mainly been investigated for their multiple etiologies as well as for changes leading to diabetes and their genetic derivation.Aspects which seem important and need a special research endeavor are the mechanism of the causes of diabetes and the lapse into complications in different species,their molecular basis and possible arrest and prevention.A concise list and and short discussion of the intensively studied rodents is present ed of spontaneous or nutritional background causing Type 2 diabetes but omitting diabetes evoked by transg enic manipulations or gene knockout techniques.展开更多
目的通过乳香胶对幽门螺杆菌(H P)的体外和体内试验来判定其疗效。方法用琼脂稀释法确定乳香胶对H P的最小抑菌浓度(M IC)及最小杀菌浓度(M BC),以H P感染沙鼠4周后给予药物治疗,疗程14d。结果乳香胶对H P M 13适用株的M IC为0.125m g m...目的通过乳香胶对幽门螺杆菌(H P)的体外和体内试验来判定其疗效。方法用琼脂稀释法确定乳香胶对H P的最小抑菌浓度(M IC)及最小杀菌浓度(M BC),以H P感染沙鼠4周后给予药物治疗,疗程14d。结果乳香胶对H P M 13适用株的M IC为0.125m g m/L,M BC为0.5m g m/L;口服治疗7,14d及停药20d后H P清除率,3.75m g剂量组分别为25%,100%,25%,7.5m g剂量组分别为0,100%,50%,15m g剂量组分别为50%,100%,100%。结论乳香胶在体内和体外对H P感染都有效,但在体内试验中,停药后低剂量组有复发,可能是因为低剂量乳香胶只能抑制H P生长而不能完全清除细菌。展开更多
旨在探索应用长爪沙鼠(Meiiones unguiculataus)构建戊型肝炎病毒(hepatitis E virus,HEV)动物模型的可行性,从猪粪便稀释悬液中提取HEV RNA并鉴定,经腹腔和口服接种HEV于长爪沙鼠,并每周采集血液、相关器官(心、肝、脾、肺、肾、肠系...旨在探索应用长爪沙鼠(Meiiones unguiculataus)构建戊型肝炎病毒(hepatitis E virus,HEV)动物模型的可行性,从猪粪便稀释悬液中提取HEV RNA并鉴定,经腹腔和口服接种HEV于长爪沙鼠,并每周采集血液、相关器官(心、肝、脾、肺、肾、肠系膜淋巴结、脾脏)及粪便。用反转录PCR(RT-PCR)和免疫组化等检测方法分析各个样品。结果表明,感染后第7天开始,可从血液、肾脏、脾脏、肠系膜淋巴结、肝脏、肺、粪便中检测到HEV RNA;通过免疫组化和组织病理学观察,发现HEV可在肝脏中进行表达,并且能引起肝组织病理变化,但感染HEV后长爪沙鼠均缺乏较明显的临床表现症状。结果提示,长爪沙鼠对HEV具有易感性,感染后肝脏出现小叶性肝炎的病理变化,具有作为HEV感染动物模型的潜在价值。展开更多
文摘INTRODUCTION Since 1982,Helicobacter pylori(Hp) has been successfully isolated and cultured,and the fact many diseases such as gastritis,peptic ulcer,gastric carcinoma
文摘In most publications,animal models of diabetes have mainly been investigated for their multiple etiologies as well as for changes leading to diabetes and their genetic derivation.Aspects which seem important and need a special research endeavor are the mechanism of the causes of diabetes and the lapse into complications in different species,their molecular basis and possible arrest and prevention.A concise list and and short discussion of the intensively studied rodents is present ed of spontaneous or nutritional background causing Type 2 diabetes but omitting diabetes evoked by transg enic manipulations or gene knockout techniques.
