研究人员发现能够在数秒钟内止血的新物质

 
一项最新研究发现，一种简单的生物降解液体能够在数秒钟之内止住受伤嗫齿类动物的出血，该研究能够显著提高重症患者的预后，减少手术时间。

麻省理工学院(MIT, Cambridge, USA)和香港大学(HKU)的研究人员发现，该液体由蛋白片断(肽类)组成，可以用于开放性伤口，这些肽类可以自我排列形成纳米级的保护胶，可以封闭伤口而止血。一旦伤口愈合，这种无毒的胶就分解成为氨基酸，周围的细胞可以利用这些物质进行组织修复。研究人员将这种液体用于仓鼠和大鼠的开放性伤口，检测的组织包括：脑、肝脏、皮肤、脊髓和肠道。

 
New Material Stops Bleeding in Seconds
 
A new study has found that simple biodegradable liquids can stop bleeding in wounded rodents within seconds, a development that could significantly improve critical care and lessen surgery time.

Researchers from the Massachusetts Institute of Technology (MIT, Cambridge, USA) and Hong Kong University (HKU) have found that when the liquid, composed of protein fragments (peptides), is applied to open wounds, the peptides self-assemble into a nanoscale protective barrier gel that seals the wound and halts bleeding. Once the injury heals, the nontoxic gel is broken down into amino acids that the surrounding cells can use as building blocks for tissue repair. The researchers applied the liquid to open wounds in hamsters and rats, testing different types of tissue: brain, liver, skin, spinal cord, and intestine.