HOME >> MEDICINE >> NEWS
Spiral waves break hearts: Importance of communication between cardiac cells is demonstrated

MONTREAL, CANADA (February 5, 2002)--Who says physicists don't have heart? In an effort to study the factors that lead to fatal cardiac rhythms, a team of Canadian researchers has shown that the importance of communication applies not only to people, but also to their heart cells. The researchers report their results in this week's issue of the journal Physical Review Letters.

Sudden cardiac death kills more than 250,000 people each year in the US alone. Physicists have been studying the important role that electricity plays in the heart's health--and how it may be a culprit in disease.

Electrical impulses regularly circulate through cardiac tissue and cause the heart's muscle fibers to contract. In a healthy heart, these electrical impulses travel smoothly and unobstructed, like a water wave that ripples gently in a pond. However, for reasons that have not been perfectly understood, these waves can sometimes develop into troublesome, whirlpool-like spirals of electrical activity that can circulate through the heart.

Investigating these "spiral waves," scientists at McGill University in Montreal studied chick-embryo cardiac cells grown as a sheet of tissue. In the first two days after this arrangement of cells is created, spiral waves often form in the tissue. When the researchers sprinkled the sheet of cardiac tissue with a drug that impairs communication between the cells, they observed that the rotating spiral waves broke up into multiple rotating spirals.

This breakup of spiral waves in the two-dimensional sheet is believed to be similar to the 3D electrical patterns that cause human hearts to undergo ventricular fibrillation, a potentially fatal cardiac rhythm that often occurs when communication between cells is impaired. In a real-world situation, reduced intercellular communication may be caused by a heart attack or by other cardiac diseases, which can produce diseased or damaged heart tissue.

Developing a
'"/>

Contact: Ben Stein
bstein@aip.org
301-209-3091
American Institute of Physics
5-Feb-2002


Page: 1 2

Related medicine news :

1. Spiral scan sees stroke blockage more clearly
2. UCLA researchers check brain waves to predict effectiveness of antidepressants
3. Microwaves May Provide Early Detection Of Breast Cancer
4. International gathering of experts to share retinoblastoma breakthroughs
5. A new method for early detection of disease outbreaks
6. Leukemia drug breakthrough study in New England Journal of Medicine
7. HIV vaccine trial breaks ground for future research
8. Consumers to benefit from organic potato breakthrough
9. Anniversary of one of the largest hepatitis A outbreaks in the US brings experts together
10. Grab n go breakfast better serves middle school children
11. Researcher breaks down cholesterol mystery

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/19/2019)... ... April 19, 2019 , ... AXIOM ... and prosthetic implant dentistry, will host a free dental implant seminar at their ... with valuable information related to dental implants, including; procedure explanation, health and lifestyle ...
(Date:4/19/2019)... (PRWEB) , ... April 18, 2019 , ... Edens Garden ... to expand. The deodorants combine the power of 100% pure essential oils and non-toxic ... , Not only is Edens Garden’s latest product release all-natural but baking soda- ...
(Date:4/18/2019)... ... 2019 , ... Catalent, a global leader in clinical supply ... Supplies Group (GCSG) 2019 US Annual Conference at the Hyatt Regency Hill Country ... , Erin Vlack, Project Manager, will present a workshop titled “Bridging the Cultural ...
(Date:4/18/2019)... Fla. (PRWEB) , ... April 18, 2019 , ... ... Max, focusing on enhancing energy, concentration, memory, relaxation and restful sleep to support ... product were formulated to provide mental clarity, focus and vitality. , The portfolio ...
(Date:4/18/2019)... ... 18, 2019 , ... She went from learning disabled to honor roll – ... Cheryl Reilly. Those “goofy tests,” performed by Deborah Zelinsky, O.D. , founder of ... had such narrow range of visual awareness, she could only see what was directly ...
Breaking Medicine News(10 mins):
(Date:4/17/2019)... ... April 17, 2019 , ... To better address opioid ... and Gateway Health have launched a new program that takes a novel, holistic ... Enhanced Pain Management Program brings together a range of alternative, non-opioid therapies and ...
(Date:4/17/2019)... ... , ... Clinical trials of new cancer treatments have historically focused on disease ... advances in medical oncology and genomic characterization of tumors, we are now able to ... “basket trials.” This ability has created a paradigm shift in oncology trials. , In ...
(Date:4/17/2019)... ... April 17, 2019 , ... AdventHealth University (AHU) ... students to degrees in both a Master of Healthcare Administration in Strategy & ... to be completed in as little as two years with a total of ...
Breaking Medicine Technology:
Cached News: