Mending broken hearts

时间:2019-03-07 08:05:07166网络整理admin

By Philip Cohen REPAIRING a damaged heart suddenly seems possible. Two teams of scientists report that stem cells can fix some of the damage caused by heart attacks. The techniques could be tested in people as early as next year. The havoc caused by a heart attack comes in two stages. Minutes after a coronary artery is blocked, heart muscle cells begin to suffer from the lack of oxygen and nutrients. If doctors don’t clear the blockage immediately, the cells die and the heart is permanently damaged. Days or weeks later, the heart compensates by “remodelling”,