摘要
目的 :了解粒细胞集落刺激因子 (G -CSF)动员的CD3 4 +细胞的心肌细胞分化潜能。方法 :用异丙肾上腺素 (ISO)复制急性心肌梗死大鼠动物模型 ,于 3h后用G -CSF动员骨髓造血干细胞进行心肌梗死动物模型的“自身干细胞移植” ,用免疫组化和HE染色方法检测动物模型心梗区的CD3 4 +细胞浸润以及心肌细胞再生情况。结果 :用ISO后 2 4h ,G -CSF处理组大鼠心梗区可见大量CD3 4 +单个核细胞浸润 ,并有CD3 4 +的新生心肌细胞生长 ,2周后疤痕组织不明显 ;而对照组心梗坏死区有大量以中性粒细胞为主的炎症细胞浸润 ,无CD3 4 +细胞浸润及新生心肌细胞生长 ,2周后出现较大量的疤痕组织。结论 :G -CSF动员CD3 4 +细胞具有向心肌细胞分化的潜能 ,用G -CSF动员造血干细胞的“干细胞自身移植” ,可治疗急性心肌梗死。
AIM:To investigate the potential of differentiatng into myocytes of the granulocyte colony-stimulating factor(G-CSF)-mobilized CD34 + cells. METHODS: Three hours after intraperitoneal injecction of isoprenaline(ISO) to develop acute ischemic model, rats' bone marrow hematopoietic stem cells were mobilized to the site of myocardial infarction by G-CSF. The techniques of immunohistochemisty and HE stain were used to detect the infiltration of CD34 + cells and the regeneration of myocytes in the infarct zones. RESULTS: 24 hours after administration of ISO , a large amount of infiltrative monocytes and regenerative myocytes which were CD34 positive expression could be found in the infarct zones of the G-CSF treatment group, while majority of the infiltrative inflammatory cells in control group were neutrophils and there was no infiltrative cells and myocytes which were CD34 positive expressio, 2 weeks after administration of ISO, there were a plenty of scar in control group, but not in the G-CSF treatment group. CONCLUSION: G-CSF-mobilized CD34 + cells possess the potential to differentiate into myocytes and it may be used in treating acute myocardial infarction.
出处
《中国病理生理杂志》
CAS
CSCD
北大核心
2002年第2期117-119,共3页
Chinese Journal of Pathophysiology
基金
国家攀登专项计划项目 ( 95 -专 - 10 )
广东省科技厅团队项目 ( 0 190 12 )
广东省"五个一"科教兴医工程重点项目 (粤卫 1996- 186号 )
关键词
CD34^+细胞
心肌梗死
细胞分化
粒细胞集落刺激因子
CD34 + cells
Myocardial infarction
Cell differentiation
Granulocyte colony-stimulating factor
Rats
