Broken hearts mend with 'patch' 心脏损伤“补片”修复
文章来源:未知 文章作者:meng 发布时间:2009-08-25 03:12 字体: [ ]  进入论坛
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A team of Israeli scientists has developed a potential way to fix the damage from heart attacks.

一组以色列科学家发现了一种可能修复心脏病造成的损伤的方法。

Patches may repair the damage from heart attacks
Patches may repair the damage from heart attacks

A "patch" has been made from heart muscle that can be used to fix scarring left over from a heart attack.

Writing in the journal PNAS, the scientists describe how the technique strengthened the hearts of rats that had suffered heart attacks.

The "patch" was grown in abdominal1(腹部的) tissue first, then transplanted to damaged areas of the heart.

This experiment is the first to show that such patches can actually improve the health of a heart after it has been damaged.

The scientists measured an increase in the size of the muscle in damaged areas, and improved conduction of the electrical impulses needed for the heart to pump normally.

Heart failure

Heart attacks usually cause irreversible(不可逆转的) damage to heart muscle. If people survive, then the damaged muscle can cause another serious condition called heart failure.

It is hoped that the procedure may eventually lead to treatments in humans because of its "simplicity2 and safety", the authors - led by Tal Dvir from Ben-Gurion University of the Negev in Beer-Sheva - wrote in Proceedings3 of the National Academy of Sciences (PNAS).

However, they added that "because most patients with heart attacks are old, and multiple surgery can pose a large risk to them, our strategy is not currently an option".

Ellen Mason, senior cardiac(心脏的) nurse at the British Heart Foundation (BHF), told BBC News: "In the last decade there has been significant research into injecting cells, including stem cells, into the heart to try and repair the damaged area.

"This study was in animals, but may help scientists better understand how to repair damaged human hearts in the future."

The technique is also being developed for livers and bladders(膀胱).



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1 abdominal VIUya     
adj.腹(部)的,下腹的;n.腹肌
参考例句:
  • The abdominal aorta is normally smaller than the thoracic aorta.腹主动脉一般比胸主动脉小。
  • Abdominal tissues sometimes adhere after an operation.手术之后腹部有时会出现粘连。
2 simplicity Vryyv     
n.简单,简易;朴素;直率,单纯
参考例句:
  • She dressed with elegant simplicity.她穿着朴素高雅。
  • The beauty of this plan is its simplicity.简明扼要是这个计划的一大特点。
3 proceedings Wk2zvX     
n.进程,过程,议程;诉讼(程序);公报
参考例句:
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
TAG标签: heart patch mend
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