MONDAY, Nov. 24, 2003 (HealthDayNews) -- The blizzard of new findings presented at the American Heart Association's recent annual meeting show just how far science is progressing: There are now defibrillators that are easier to use than a VCR and techniques that may enable a damaged heart to repair itself.
"It's always exciting. We're always moving forward," says Dr. Edwin C. Weiss, a clinical assistant professor of medicine at New York University School of Medicine in New York City, who attended the meeting. "We've got to move forward. If we just stay stable, we're moving backwards."
Highlights of the meeting also signal the direction of future research:
Now, however, researchers can inject stem cells derived from a person's own bone marrow into a damaged heart to see if the cells will generate the heart.
"These strategies are designed to alter the repair process so that lost muscle cells are replaced by cells that have the potential to lead to a new generation of new muscle cells and preserve function," says Grant, co-director of the Heart Station and professor of medicine at Duke University Medical Center in Durham, N.C.
Researchers are taking stem cells from a person's vein and placing them on the scaffold of a valve donated by someone else. The donated valve has been stripped of its lining and consists only of the collagen that holds it together. The stem cells grow on the valve so that it soon is covered by the person's own cells. That valve does not actually go in the heart, but rather replaces a pulmonary valve, which services the lung. The pulmonary valve, in turn, goes into the aortic valve.
"You want a more durable valve in the aortic position," Weiss explains. After a while, the collagen base also is replaced by the recipient's own collagen. The procedure has been done in a small number of people, with promising results.
"This is very good news because it is supporting what the early research data did show: a significant reduction in restenosis of the stent area," Weiss says.
Despite such optimistic reports, the meeting also presented troubling news -- namely, figures on a rising tide of obesity, diabetes and metabolic syndrome, especially in children.
"The number of people that need stents and pacemakers are a small proportion of the people who have gathering obesity [and] who are putting themselves at risk of diabetes, stroke and kidney failure," Weiss says.
One in eight children has metabolic syndrome, a precursor to diabetes, heart disease and other troubles, researchers report. More and more adults and children alike are obese.
"Doctors really need to be on target," Weiss says. "We need to emphasize healthy lifestyle. It may not be new, but it's the most important thing that came out of the meeting."
More information
Check out the American Heart Association for more information on prevention, metabolic syndrome and high blood pressure.