Introducing the Gizmag Store

Heart Disease

A beating rabbit's heart, fitted with one of the membranes (Photo: Igor Efimov)

When it comes to monitoring the electrical activity of the heart, or delivering electrical stimulation to it (as in the case of pacemakers), most current technologies rely on electrodes that make contact with the organ in just a few locations. That doesn't necessarily provide a very detailed picture of what's going on, nor does it deliver stimulation all that evenly. Now, scientists have created a sensor-laden three-dimensional elastic membrane that can be pulled over the whole heart, to provide a large number of contact points.  Read More

An injection of polymer nanoparticles could save the lives of heart attack victims (Image:...

After a heart attack has occurred, inflammatory cells known as monocytes rush to the damaged tissue. This causes the heart to swell, reducing its ability to pump blood, and further damaging the tissue – a potentially lethal situation. Now, however, scientists have discovered that injectable microparticles can help stop that from happening.  Read More

The ZIO Patch is worn on the chest for up to two weeks (Photo: Scripps)

Ordinarily, when doctors wish to monitor an ambulatory patient for heartbeat irregularities, they have them wear what is know as a Holter monitor. The device is fairly cumbersome, so it's usually worn for no more than 24 hours. A recent study, however, indicates that the relatively new ZIO Patch provides more accurate readings, while being considerably less obtrusive.  Read More

Heart muscle cells aligning and stretching within the MeTro gel material (Image: Khademhos...

One of the things that makes heart disease so problematic is the fact that after a heart attack occurs, the scar tissue that replaces the damaged heart tissue isn’t capable of expanding and contracting – it doesn’t “beat,” in other words. This leaves the heart permanently weakened. Now, however, scientists from Harvard-affiliated Brigham and Women's Hospital (BWH) have developed artificial heart tissue that may ultimately provide a solution to that problem.  Read More

Ordinary heart cells have been transformed into working replicas of SAN cells, which allow...

Scientists at the Cedars-Sinai Heart Institute have successfully reprogrammed ordinary heart cells to become exact replicas of so-called “pacemaker” heart cells. Such replica cells could conceivably one day be used instead of electronic pacemakers, in patients with heart disease.  Read More

Micro-bubbles have been used to identify inflamed sites in arteries, which can lead to dan...

Heart attack and stroke-causing plaque deposits in the arteries are typically preceded by an inflammation of the arteries in those same areas. Therefore, if doctors could be aware of those inflamed regions before plaque deposits formed and problems such as chest pains arose, a lot of hardship could potentially be avoided. Well, that soon may be possible, thanks to some tiny bubbles.  Read More

Genetically-modified tomatoes and a type of probiotic bacteria have both been claimed to h...

Atherosclerosis, more commonly known as hardening of the arteries, can have very serious consequences such as heart attacks and strokes. While there are medications that remove some of the offending plaque from the inside of the affected arteries, not everyone wants to take drugs unless absolutely necessary. Lifestyle improvements can certainly help, but soon two other options may be available – probiotics and genetically-engineered tomatoes.  Read More

A new understanding of the immune system may be paving the way for the development of a va...

Most people probably know that plaque buildup in the arteries surrounding the heart is one of the major causes of heart disease. The reason that the plaque does accumulate, however, is often due to an inflammation of the artery walls. Recently, scientists from California’s La Jolla Institute for Allergy & Immunology were able to identify the type of immune cells responsible for that inflammation. With this knowledge in hand, they now hope to be able to develop a vaccine for heart disease.  Read More

Assistant professor Kee-Hong Kim from Purdue University is testing a compound that is comm...

Researchers from Purdue University in Indiana are testing a compound found in red wine that has the ability to block the processes of fat cell development. The research into the compound known as piceatannol may lead towards finding a simple method to combat obesity.  Read More

Flakes of heart tissue are spun in a beaker, as part of the hydrogel production process

Universities and scientific organizations all over the world are currently looking into ways of growing functioning heart cells on the heart, to replace the tissue that dies when a heart attack occurs. As things currently stand, the body replaces that tissue with non-beating scar tissue, leaving the heart permanently weakened. Most of the experimental techniques for generating new tissue involve introducing some sort of micro-scaffolding to the affected area, providing a framework for new cells to grow on. That scaffolding has consisted of materials such as carbon nanofibers and gold nanowires, which would have to be surgically applied to the heart, sort of like a Band-Aid. Now, however, researchers from the University of California, San Diego are reporting success in animal trials, using an injectable hydrogel.  Read More

Looking for something? Search our 26,500 articles