An extended family living in the American mid-west state of lowa has helped scientists to find the first gene that unequivocally causes heart attacks in late middle age. The family has an extensive history of heart attacks with the risk highest at about the age of 60. A heart attack becomes almost inevitable in members of the family who have inherited a defect in gene known to be involved in the formation of blood vessels. Eric Topol Cleveland Clinic Foundation on Ohi said that although the genetic defect has only been found in this family, its discovery could lead to a better understanding of heart attacks in the general population. "This stands out because of its potential impact. It's a great first step towards understanding the basis of coronary artery disease at its genetic studies that once you get the first gene it starts to unlock whole story". Doctors eventually traced 26 closed family members with heart problems. The researcher took blood samples for DNA analysis in the hope of finding a common genetic link to the discover. The study found that a region of chromosome 15 - one of the 23 pairs of chromosomes in the human genome - contained a linkage "hotspot" that was known from previous studies to include a gene called MEF2A. |
No comments:
Post a Comment