Thursday, 10 February 2011
Who is your Valentine; Cupid or a fish?
However, after about ten days the fish were back to their normal routines, swimming vigorously. Of the ten fish with broken hearts, eight fully recovered. Another microscope inspection revealed that the recovered fish had regenerated their heart tissue with virtually no scarring.
How, exactly, zebra fish mend their broken hearts is of great interest to scientists. When people recover from a heart attack their hearts are never quite the same. A healing heart normally accumulates scar tissue instead of muscle growth. The scarred, weakened heart cannot contract and pump blood as efficiently as an undamaged heart.
Since zebra fish and humans share many of the genes responsible for cell regeneration, further study may lead to techniques for scar-free human heart repair.