Cardiology
Researchers envision switching a heart beat on and off with light
With a few flicks of a light switch—on-off-on-off—Stanford University's Oscar Abilez is one step closer to changing the lives of millions.
Sep 19, 2013
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News tagged with pacemaker cells
Medical research
Researchers aim to use light—not electric jolts—to restore healthy heartbeats
When a beating heart slips into an irregular, life-threatening rhythm, the treatment is well known: deliver a burst of electric current from a pacemaker or defibrillator. But because the electricity itself can cause pain, ...
Aug 28, 2013
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Cardiology
Team discovers an unknown channel in the heart could illuminate unsolved cases of arrhythmia
The heart's regular rhythm is crucial to the delivery of oxygenated blood and nutrients to all the organs of the body. It is regulated by a bundle of cells called "the pacemaker," which use electrical signals to set the pace ...
Jun 11, 2013
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Psychology & Psychiatry
Success in patients with major depression: For the first time, physicians stimulated patients' medial forebrain bundles
Researchers from the Bonn University Hospital implanted pacemaker electrodes into the medial forebrain bundle in the brains of patients suffering from major depression with amazing results: In six out of seven patients, symptoms ...
Apr 9, 2013
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Cardiology
Study finds possible link between diabetes and increased risk of heart attack death
Having diabetes doubles a person's risk of dying after a heart attack, but the reason for the increased risk is not clear. A new University of Iowa study suggests the link may lie in the over-activation of an important heart ...
Feb 15, 2013
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Medical research
Ordinary heart cells become 'biological pacemakers' with injection of a single gene
Cedars-Sinai Heart Institute researchers have reprogrammed ordinary heart cells to become exact replicas of highly specialized pacemaker cells by injecting a single gene (Tbx18)–a major step forward in the decade-long search ...
Dec 16, 2012
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Cardiology
Rhythm is it: Ion channels ensure the heart keeps time
The heartbeat is the result of rhythmic contractions of the heart muscle, which are in turn regulated by electrical signals called action potentials. Action potentials result from the controlled flow of ions into heart muscle ...
Sep 9, 2011
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Medical research
Technique to stimulate heart cells may lead to light-controlled pacemakers
(Medical Xpress) -- A new technique that stimulates heart muscle cells with low-energy light raises the possibility of a future light-controlled pacemaker, researchers reported in Circulation: Arrhythmia & Electrophysiology, ...
Aug 9, 2011
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Medical research
Sea squirt pacemaker gives new insight into evolution of the human heart
An international team of molecular scientists have discovered that star ascidians, also known as sea squirts, have pacemaker cells similar to that of the human heart. The research, published in the JEZ A: Ecological Genetics ...
Aug 2, 2011
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Medical research
Researcher finds caffeine consumption, female infertility link
Caffeine reduces muscle activity in the Fallopian tubes that carry eggs from a woman's ovaries to her womb. "Our experiments were conducted in mice, but this finding goes a long way towards explaining why drinking caffeinated ...
Jul 20, 2011
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