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Scientists discover how to regrow heart muscle

Scientists from Australia and Israel have proudly discovered a technique to regrow heart
muscle cells, a breakthrough that may have major implications for heart
attack victims. According to World Health Organization (WHO) stats, coronary heart disease is the number one cause of death in the Israel state.
Researchers at the Weizmann Institute of Science in Rehovot and the
Victor Chang Institute in Sydney managed to regrow 45 percent of a mouse’s heart muscle cell numbers
by manipulating the activity of a hormone ‘neuregulin’  that regulates cell growth. 
This is very important, because the heart is not able to rebuild itself
after an injury, so right now, the only solution for a broken heart is a
“Unlike blood, hair or skin cells, which can renew themselves throughout
life, cell division in the heart virtually comes to a standstill
shortly after birth, which means the heart can’t fully regenerate if it
is damaged later in life,” said by Richard Harvey, one of the team from UNSW
Medicine in Australia.

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Harvey, explains that just after birth, the growing heart
cell mechanisms become dormant, and for years, scientists have been working hard for finfing how to turn them back on. According to Craig Butt at The Sydney Morning Herald, the team managed to stimulate the neuregulin pathway during a heart attack, which led to the replacement of damaged tissue.
“Previous studies have demonstrated that it is possible to coax heart
muscle cells to proliferate again, but only at very trivial levels,” said Harvey. “What the research team has been able to do is boost heart muscle cell numbers by as much as 45 percent after a heart attack.”
The research has been published in the journal Nature Cell Biology.
dream is that one day we will be able to regenerate damaged heart
tissue, much like a salamander can regrow a new limb if it is bitten off
by a predator,” Harvey said in the press release. “Just imagine if the heart could learn to regrow and heal itself. That would be the ultimate prize.”