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Blood, Heart and Circulation

New Role Discovered for Red Blood Cells: Blood Vessel Creation

Red blood cells are the most abundant cell type in the human body, yet little is known about them apart from their ...

Platelets modulate clotting behavior by "feeling" their surroundings

By Quinn Eastman - Platelets, the tiny cell fragments whose job it is to stop bleeding, are very simple. They don’t have ...

Variability Keeps The Body In Balance

Although the heart beats out a very familiar "lub-dub" pattern that speeds up or slows down as our activity increases or decreases, the pattern itself isn't as regular as you might think. In fact, the amount of time between heartbeats can vary even at a "constant" heart rate—and that variability, doctors have found, is a good thing. ... Full story

Patient’s question triggers important study about blood thinners

OTTAWA — Physicians around the world now have guidelines to help them determine the best oral blood thinners to prescribe to patients suffering from venous blood clots, thanks to an Ottawa Hospital patient who asked a question his doctor couldn’t answer. ... Full story

One-minute point-of-care anemia test shows promise in new study

A simple point-of-care testing device for anemia could provide more rapid diagnosis of the common blood disorder and allow inexpensive at-home self-monitoring of persons with chronic forms of the disease. ... Full story

Banked blood grows stiffer with age, study finds

CHAMPAIGN, Ill. — It may look like fresh blood and flow like fresh blood, but the longer blood is stored, the less it can carry oxygen into the tiny microcapillaries of the body, says a new study from University of Illinois researchers. ... Full story

A new stent graft made from a 3-D image of the patient’s anatomy is an option for people suffering from an abdominal aortic aneurysm

A new minimally-invasive surgery involving a stent graft made from a 3-D image of the patient’s anatomy eliminates the need for open surgery for some patients suffering from abdominal aortic aneurysms. ... Full story

Plant-based Research at Penn Prevents Complication of Hemophilia Treatment in Mice

While healthy people have proteins in their blood called clotting factors that act quickly to plug wounds, hemophiliacs lack these proteins, making even minor bleeds difficult to stop. ... Full story

Researchers Discover Natural 'Barricade' to Red Blood Cell Development

Madison, Wisconsin - This probably isn’t something you want to hear, especially if you’re suffering from an anemia: your body has barriers to slow down red blood cell production. Researchers at the University of Wisconsin-Madison have discovered a naturally occurring hurdle amid the many steps of developing stem cells into red blood cells within the bone marrow. ... Full story

Protein in plasma may one day change transfusions

By Geoff Koehler - In injured mice, the naturally occurring protein fibronectin is instrumental in stopping bleeding but interestingly also at preventing life-threatening blood clots – according to new research published today in Journal of Clinical Investigation. ... Full story

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