Reversing a heart attack: scientists reprogram scar tissue into working muscleChristie Wilcox
Cardiomyocytes, the cells responsible for the beating of the heart, are essential to repairing the heart after injury. But after injury, such as a heart attack, many of these cells are irreversibly lost; they've been turned into scar tissue cells. The replacement of these lost cells with pat...
The prognosis for patients who survive a heart attack depends largely on the degree of injury to the heart and the associated decline in heart function. Reduced heart function following an attack is caused by the formation of scar tissue that interferes with the normal electrical activity of the...
Symptoms of a heart attack or MI may include chest discomfort often described as apain, pressure, or tightness associated with shortness of breath, sweating, andnausea. The goal for medical care is to restore blood supply back to the heart as soon as possible -- that time is measured in ...
It is estimated that during a heart attack, one billion cells in the heart are lost. In the wake of the heart attack, the lost tissue is replaced by scar tissue, which can lead to heart failure, arrhythmia and death. In a new study, researchers from the University of Tsukuba have shown...
Your heart muscle starts to heal soon after a heart attack. This takes about 8 weeks. Just like askin wound, a scar forms in the damaged area. But the new scar tissue doesn’t move the way it should. So your heart can’t pump as much after a heart attack. How much that ability ...
In other words, insight into the recovery of the heart after a heart attack and how this leads to the formation of scar tissue is extremely important. However, much is still unknown. Reason enough for researchers from the lab of Eva van Rooij to examine this further. They studied how the...
Unlike other tissues, heart muscle cells do not regenerate after a heart attack. Instead, fibroblasts create scar tissue that can impair the heart's ability to pump blood. Although the immune system's response to heart damage plays a crucial role in recovery, when the inflammation triggered by...
After reading through this lesson you will be able to define what a heart attack is. You willl learn the signs and symptoms as well as underlying...
When a heart attack occurs, part of the heart muscle dies and is ultimately replaced with scar tissue. This leaves the heart weaker and less able to meet the needs of the body. This will lead to exerciseintolerance including early fatigue or shortness of breath on exertion. The amount of ...