血液探秘

华盛顿—在最发达国家,病人对输血安全性有信心。问题是保持稳定的无污染献血源有时并不容易。有没有希望保证随时随地都有安全血液的充足供应?

当今血液供给——通常来自志愿捐献——可能被艾滋病和其他病原污染。献血者献的血必须冷藏,保质期为28天。出于污染担忧——以及更持久血源的军事利益——血液的合成替代品研究长期以来一直是医学的优先发展项目。

使用血液替代品的思想起源于17世纪,至今仍吸引着研究者。在寻找储藏稳定、携带便捷、普遍是用的血液替代品(以便在战场等极端环境中代替标准输血操作)的过程中,一些可能引起输血医学革命的产品已经被开发出来。

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