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抗血素III可以防止和快速逆转白细胞在缺血/再输血的招募
L Ostrovsky1, R C Woodman, D Payne
1Department of Physiology and Biophysics, University of Calgary, Alberta, Canada.
Circulation
|October 23, 1997
概括
抗血素III (ATIII) 通过向血,有效地减少了中性粒细胞在缺血/再输血期间的滚动和粘附. 这种内源性药物提供了一种治疗策略,可以逆转再输液后的炎症.
科学领域:
- 血管生物学 血管生物学
- 炎症研究 炎症研究
- 血栓形成和血液静止.
背景情况:
- 皮选择素对于白细胞滚动在缺血症后的再输血至关重要.
- 在缺血性微血管中中性粒细胞滚动的媒介尚未完全理解.
研究的目的:
- 研究血栓在缺血引起的白细胞滚动和粘附中的作用.
- 评估抗血素III (ATIII) 在逆转这些反应方面的治疗潜力.
主要方法:
- 在猫间肠道缺血/再输血模型中使用了静脉内显微镜.
- 评估白细胞滚动和粘附动力学.
- 使用人类内皮细胞的流体室实验来测试ATIII对血栓诱导滚动的影响.
主要成果:
- 缺血/再输血显著增加白细胞滚动和粘附.
- 在ATIII注射前和后,中性粒细胞滚动和粘附率降低到基线水平.
- ATIII逆转了由血诱导的,但不是由胰岛素诱导的,在内皮上滚动,表明对血有特定的影响.
结论:
- 血栓是缺血引起的白细胞滚动和粘附的关键媒介.
- 通过向血栓,ATIII证明了对复后炎症的治疗潜力.
- ATIII提供了一种有针对性的方法来减轻白细胞招募,而不会产生抗粘附分子疗法的广泛影响.
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