Good news!
"New UCLA research conducted in mice could explain why some people suffer more extensive scarring than others after a heart attack. ... “Two individuals with the same degree of heart attack can end up with different amounts of scar tissue,” ... To determine the role this collagen plays in scarring, the researchers genetically engineered a mouse model that was incapable of producing type 5 collagen in scar tissue following a heart injury. The results were surprising.
“Normally if you delete a collagen, you would expect the scar tissue size to decrease because collagen forms scar tissue. We found, paradoxically, that the scar size actually increased by 50%,” ... found that type 5 collagen was regulating the stiffness of scar tissue. Without it, the scar tissue was less stiff and therefore prone to expansion from the force of the blood within the heart."
How the body regulates scar tissue growth after heart attacks | UCLA A single protein may determine how much scarring occurs
Here is the link to the underlying paper:
Type V Collagen in Scar Tissue Regulates the Size of Scar after Heart Injury
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