具有氨基侧链的多化γ-环氧氨酸为高效的抗肝素凝固剂
Wen-Jin An1, Zhuo Lei1, Xiao-Yong Yu1
1College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China.
Advanced healthcare materials
|January 6, 2025
概括
一种新型的循环素衍生物,PyA-γ-CD,有效地中和未分离和低分子量肝素. 这种生物相容化合物在临床环境中显示出作为安全有效的肝素解毒剂的巨大潜力.
科学领域:
- 生物化学 生物化学
- 制药化学 制药化学 制药化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 多重电荷的环极在制药和生物应用中至关重要.
- 氨酸及其衍生物是广泛使用的抗凝剂,需要有效的逆转剂.
- 目前的肝素抗毒剂,像质氨酸一样,在治疗窗口和特异性上有局限性.
研究的目的:
- 开发和评估一种用于氨酸中和的新型多价值凝固剂.
- 为了描述新剂与肝素的结合亲和力.
- 评估该药物作为肝素抗毒剂的疗效和安全性,在体外和体内.
主要方法:
- 合成氨基乙氧基---基改性γ-环极 (PyA-γ-CD).
- 紫外线定位以确定PyA-γ-CD和肝素之间的结合常量.
- 在猪血中进行激活部分血栓形成时间 (aPTT) 测定,以评估未分离氨酸 (UFH) 和低分子量氨酸 (LMWHs) 的中和.
- 在小鼠体内血液逆转研究.
主要成果:
- PyA-γ-CD表现出强烈的与肝素结合,其明显结合常数 (K) 为9.85 × 10 M−1.
- PyA-γ-CD实现了对UFH (94%),达尔特巴林 (91%),埃诺沙巴林 (99%) 和纳德罗巴林 (85%) 的高中和活性.
- 该药物与质氨酸相比,具有更广泛的治疗窗口,并且在体内有效逆转氨酸诱导的出血,具有良好的生物相容性.
结论:
- PyA-γ-CD是各种形式的肝素的高效凝固剂.
- 该化合物提供有效的肝素中和,具有有利的安全性.
- PyA-γ-CD具有显著的潜力,可以作为肝素过量治疗的临床解药.
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