機械水蛭吸血效果更佳

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如果您和大多數人一樣,僅僅提到“水蛭”這個詞就會讓您厭惡地皺起眉頭。但想象一下,作為治療方案的一部分,您不得不讓這些寄生蟲附著在您身上。事實上,所謂的醫用水蛭是預防整形外科術後血液凝固的標準工具。然而,科學家們可能已經找到了一種超越大自然凝血劑的方法:一種新開發的機械水蛭比其活體同類吸血效果更好。而且,它還消除了“令人作嘔”的因素。

這種新穎的裝置由威斯康星大學的研究人員建立,由一個微小的玻璃外殼、一個真空和一個將抗凝血劑肝素輸送到受影響組織的管道組成。“真正的水蛭能做到的和我們的機械水蛭能做到的之間有很大的區別,”共同發明人邁克爾·孔福蒂指出。“真正的水蛭只能滲透到一定的深度。我們的裝置可以在皮膚下更深層發揮作用,進入更大的血管,並治療更大面積的組織。” 機械水蛭也沒有一些水蛭在治療過程中可能引入的細菌。

然而,團隊成員納丁·康納對這種吸血小工具的好處有不同的看法。“也許這種機械裝置最大的優勢在於它不是水蛭,”她評論道。“人們不希望這種令人作嘔的生物掛在他們身上。這種額外的心理壓力對於患者和家庭成員來說都加劇了本已困難的局面。”

Kate Wong is an award-winning science writer and senior editor at 大眾科學 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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