复合性线核毒素基本纤维细胞生长因子 - - 沙林可减少动脉静脉静脉静脉内膜增生在动脉静脉移植的
C Chen1, S G Mattar, J D Hughes
1Department of Surgery, Emory University School of Medicine, Atlanta, Ga, USA.
Circulation
|October 15, 1996
概括
再组合合物化学甲基毒素rFGF2-SAP显著降低了静脉解静脉内膜增生和细胞增殖,没有系统性毒性. 这项研究提出了一种新的策略,通过选择性地杀死繁殖的光滑肌肉细胞来减少内脏增生.
科学领域:
- 血管生物学 血管生物学
- 再生医学是一种再生医学.
- 生物技术是生物技术.
背景情况:
- 沙波林 (SAP) 是一种植物性细胞毒素和核糖体失活蛋白.
- 将SAP与基本纤维细胞生长因子 (FGF2) 相结合,产生一种线粒毒素,选择性地准具有高调 FGF 受体的增殖细胞.
- 静脉解静脉性亲密增生是动脉静脉 (AV) 移植失败的主要原因.
研究的目的:
- 为了评估复合合物仿制性线粒毒素rFGF2-SAP在治疗静脉静脉动静脉内膜增生症中的疗效.
- 评估局部rFGF2-SAP输注的安全性和全身毒性.
主要方法:
- 在狗身上植入了扩展聚四乙烯 (ePTFE) AV导管.
- rFGF2-SAP在静脉静脉解剖处持续局部输注14天,载体控制在相反侧.
- 使用形态学分析和氧氨 (BrdU) 指数测量了内极性增生和细胞增殖.
主要成果:
- 所有动物都通过专利移植幸存下来,并且在肝脏,脏或大脑中没有观察到系统性毒性.
- rFGF2-SAP治疗没有显著地影响动脉动脉瘤的内脏增生或细胞增殖.
- 在静脉瘤中,与对照组相比,rFGF2-SAP减少了32%的亲密厚度,40%的亲密面积和33%的细胞增殖指数 (P < .05).
结论:
- 局部输注rFGF2-SAP有效地降低了静脉静脉动脉内膜增生和相关的细胞增殖.
- 治疗没有表现出系统性毒性,这表明了有利的安全性.
- 这种方法提供了一种新的策略,通过局部输液装置通过嵌合性线粒毒素准增殖的光滑肌细胞来管理内脏增生症.
相关概念视频
Regulation of Angiogenesis and Blood Supply
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Tissue Renewal without Stem Cells
After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
However, failure of such a system...


