聚氨酸药物苏拉明可以中和质子,防止内皮病变
Nuria Villalba1, Adrian M Sackheim1, Michael A Lawson1
1Department of Emergency Medicine, University of Vermont, Burlington, VT.
Journal of immunology (Baltimore, Md. : 1950)
|July 5, 2023
概括
苏拉明药物可以防止中性粒细胞组素诱导的内皮损伤,这是创伤和败血症的关键因素. 这项研究表明,苏拉明可以中和有毒的组织蛋白,为炎症病症提供治疗潜力.
科学领域:
- 药理学 药理学是指药理学的学科.
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
背景情况:
- 中性粒细胞衍生的组织蛋白在急性炎症状况中引起内皮损伤,如创伤和败血症.
- 像肝素这样的现有治疗方法在剂量和副作用上有局限性,例如出血.
- 需要有效的药物来中和组织蛋白和保护血管系统.
研究的目的:
- 为了研究一种聚离子药物苏拉明在中和有毒组织蛋白质中的有效性.
- 评估苏拉明对内皮细胞和血管功能的保护作用,在体外和体内.
- 为了探索苏拉明的治疗潜力,用于素诱导的血管损伤.
主要方法:
- 评估了suramin对单个和素基因素的中和作用.
- 研究了suramin在培养内皮细胞中对组织素诱导的血栓生成的影响 (Ea.Hy926).
- 研究了suramin对内皮细胞信号和隔离的小鼠血管中的血管扩张的影响.
- 评估了suramin对ICAM-1表达,中性粒细胞招募和细胞毒性 in vivo 和 in vitro 的影响.
- 在小鼠中评估了苏拉明对组织素诱导的肺,出血和死亡的保护作用.
主要成果:
- 苏拉明完全中和了单个基因组的毒性作用,但不能中和基因组.
- 苏拉明显著降低了内皮细胞中由组素诱导的血栓生成.
- 苏拉明消除了异常的内皮细胞信号,并挽救了小鼠血管中受损的血管扩张.
- 苏拉明降低了肺内皮细胞ICAM-1表达和中性粒细胞的活体招募.
- 苏拉明在小鼠中预防了组织素诱导的内皮细胞细胞毒性,肺,出血和死亡.
结论:
- 苏拉明有效地中和有害的组织蛋白,并保护血管内皮功能.
- 苏拉明在炎症性疾病中表现出显著的治疗潜力,而炎症性疾病与升的基因素水平有关.
- 保护对组织素诱导的血管损伤代表了新的作用机制为suramin.
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