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作 者:赵瑛[1]
机构地区:[1]重庆师范学院生物系
出 处:《重庆师范学院学报(自然科学版)》1998年第2期19-23,共5页Journal of Chongqing Normal University(Natural Science Edition)
摘 要:应用胰岛素、胰高血糖素和生长抑素抗血清,通过免疫组化染色对正常(对照组)和STZ诱导的糖尿病大鼠(实验组)胰岛的病理形态进行了观察。结果显示:实验组胰岛B细胞发生明显变性坏死。对照组与实验组表达胰岛素呈阳性的胰岛分别为924%、233%,二者之间有显著性差异(P<0.001)。实验组胰岛表达胰高血糖素的A细胞出现明显增生,而D细胞未见变化。结果提示,STZ对胰岛B细胞具有直接损伤作用;A细胞的增生可能与STZ有关,并参与了升高血糖和胰岛素含量降低效应。Pathological morphology of pancreatic islets in normal (control group) and the streptozotocin induced diabetic rats (expermental group) were investigated by immunohistochemical method using insulin、glucogan and somatostatin antisera.The results showed that pancreatic Bcell degeneration and necrosis occurred seriously in experemental group.The pancreatic islets of positive staining for insulin antiserum in control and experemental group were 92.4% and 23.3% respectively,which was a significant difference between control and experemental group(P<0.001).Hyperplasia was seen in the pancreatic Acells of experemental group,but no pathological change was shown in the pancreatic Dcells.The results suggest that streptozotocin can cause direct damage to the Bcells.Hyperplasia of the Acells may be related to administered streptozotocin and involved in hyperglycemia in wistar rats.
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