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Sci Transl Med:伤口愈合,只需不到60秒?

2017-10-10 佚名 “中国生物技术网”微信号

一种有弹性带粘性的外科黏合凝胶将给抢救治疗带来革命性的变化,它能够在几秒钟内封闭严重的伤口。

一种有弹性带粘性的外科黏合凝胶将给抢救治疗带来革命性的变化,它能够在几秒钟内封闭严重的伤口。

澳大利亚和美国的科学家合作开发出了这种能够救命的外科黏合凝胶,将其命名为MeTro。其实科学家们并不是第一次考虑开发这种东西,但是问题在于,这些外科黏合凝胶与人类组织相互排斥。MeTro的重要创新在于它的弹性,它是一种混合弹性蛋白,非常适合为持续扩张和放松的身体组织“打补丁”,比如肺、心脏和动脉。这项研究发表在近日的《Science Translational Medicine》上。

MeTro可以直接作用于内部或外部的伤口。

美国东北大学的Nasim Annabi是研究团队成员之一,他说:“MeTro配方的优点在于,只要将其接触组织表面,它就会凝固成凝胶状态。”之后,使用紫外线照射MeTro,使其密封住。这种治疗伤口的方法比如缝针等传统治疗方法快两倍。

Annabi补充说:“我们在现场治疗的时候使用光调节交联疗法进一步使其固定。密封剂可以被非常精确地放置,并紧密地与组织表面的结构绑定。”

悉尼大学教授Anthony Weiss将MeTro类比成浴室和厨房磁砖使用的硅酮密封胶。但是与硅酮密封胶不同的是,MeTro的降解过程没有毒性。MeTro中含有一种降解酶,它能够决定MeTro分解的时间,从而使伤口可以愈合。

Weiss说:“MeTro像液体一样,可以填平缝隙,兼容于伤口的形状。它的生物反应很好,可以与人体组织紧密地对接,从而促进治疗。而且,MeTro还很容易存储,可以直接喷涂于伤口。”

目前为止,这项技术只用于动物试验,暂时还没有安排人类试验。MeTro已成功地治疗了小鼠的动脉和肺部切口,以及猪的肺部切口,这些伤口都需要得到及时的治疗。考虑到该技术的潜力已经得到证明,研究人员对于人类试验非常乐观。

Weiss说:“我们证明,MeTro在多种环境中都起作用,可以解决其他黏合剂解决不了问题。我们正在计划进行人体试验,希望MeTro可以很快被用于临床,拯救人类的生命。”

原始出处:

Annabi, N., et al., Engineering a highly elastic human protein-based sealant for surgical applications. Sci Transl Med, 2017. 9(410).

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