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Scientists at the Victor Chang Cardiac Research Institute in Sydney have discovered a critical new gene that it is hoped could help human hearts repair damaged heart muscle after a heart attack. Researchers have identified a genetic switch in zebrafish that turns on cells allowing them to divide and multiply after a heart attack, resulting in the complete regeneration and healing of damaged heart muscle in these fish. It’s already known that zebrafish can heal their own hearts, but how they performed this incredible feat remained unknown, until now. In research recently published in the prestigious journal, Science, the team...

Conceptual illustration of breast cancer cells. (MedicalRF.com/Getty Images) Researchers in Australia have discovered a gene responsible for a particularly aggressive type of hormone-sensitive breast cancer which has tragically low survival rates. "Hopefully this will dramatically improve the poor outcomes these patients currently suffer," said Harry Perkins Institute of Medical Research epigeneticist Pilar Blancafort. It's hard to overstate just how different cancers can be from one another. Even under the umbrella of 'breast cancer' lie several types, such as hormone receptor sensitive, HER2 positive, or non-hormone sensitive breast cancer; within those groups, there are even more types that can respond to...

BOSTON—Having a lower percentage of body fat may not always lower your risk for heart disease and diabetes, according to a study by an international consortium of investigators, including two scientists from the Institute for Aging Research of Hebrew SeniorLife, an affiliate of Harvard Medical School (HMS). The Institute researchers, Douglas P. Kiel, M.D., M.P.H., and David Karasik, Ph.D., who are working with the Framingham Heart Study, identified a gene that is linked with having less body fat, but also with an increased risk of type 2 diabetes and heart disease, examples of so-called "metabolic diseases." "We've uncovered a truly...

The Danish Council of Ethics has proposed a set of rules to deal with the prospective possibility that human and animal genes will be combined The first hybrid sheep-goat was created some 20 years ago, and science has since used cell and gene research to put a baboon heart into an infant and use other animal organs to save human lives. But where this technology will eventually lead to is of great concern to both the Danish Council of Ethics and the Council for Animal Ethics, who Tuesday presented their proposals for dealing with the unnerving prospect of combining human...