2009年2月17日 星期二

棉花糖可變人造組織移植體內

棉花糖可變人造組織移植體內
16.02.2009 18:32


【商台互動生活副刊組】既輕盈又甜美的棉花糖,除了「只溶喺口」之外,原來,還可以融為人體內的軟組織,成為人體其中一部分,可說是「一糖兩用」,有着完全想像不到的用途。

據了解,兩位分別來自美國紐約威爾康乃爾醫學院的史柏達(Jason Spector)醫生及康乃爾大學的研究員貝蘭(Leon Bellan),早前進行了一項嶄新破格的研究,並將之發表在《Soft Matter》刊物的網站中。他們指出,軟綿綿的棉花糖,適用於實驗室培植的骨骼、皮膚、肌肉,或可重建乳房的脂肪,製造人造血管等等,即為科學家培育出軟組織植入人體。

科學家會先把一種具黏性的化學液體,混在一團棉花糖中,讓這堆液體凝結成塊狀,然後將它放進溫水裏,使棉花糖逐漸溶解;目的是要令這塊物質內所遺留的棉花糖化解,再形成無數的細管;接着,在細管內填滿細胞,便會製造出「人造血管」。如果將這個塊狀物放進成長中的細胞當中,例如骨骼、皮膚等組織,它便會轉化成人體組織;由於該物質具有「生物分解性」(Biodegradable),所以它會逐漸被成長中的組織所取代,並且消失,科學家因此成功培育出獲得一塊完整的血管組織。

在現階段,研究員已製成此種組織,並嘗試植入實驗老鼠體內,以便進行觀察和研究。不過,關於是次棉花糖的研製也只是初步實驗,因隨着科學日新月異的演變,棉花糖或很快會被其他物質所取替;但棉花糖大有可能是當中最便宜、最化算的物料。

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