News tagged with pacemaker cells
Shine a light instead of changing the battery
(PhysOrg.com) -- Pacemakers and other implanted medical devices require electric current to operate. Changing the battery requires an additional operation, which is an added stress on the patient. A Japanese team led by Eijiro ...
Dec 01, 2011 |
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Cobblestones fool innate immunity
Coating the surface of an implant such as a new hip or pacemaker with nanosized metallic particles reduces the risk of rejection, and researchers at the University of Gothenburg, Sweden, can now explain why: they fool the ...
Nanotechnology / Bio & Medicine
Nov 29, 2011 |
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Researchers create first human heart cells that can be paced with light
In a compact lab space at Stanford University, Oscar Abilez, MD, trains a microscope on a small collection of cells in a petri dish. A video recorder projects what the microscope sees on a nearby monitor. The cells in the ...
Sep 20, 2011 |
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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 ...
Medicine & Health / Cardiology
Sep 09, 2011 |
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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, a jour ...
Aug 09, 2011 |
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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 an ...
Aug 02, 2011 |
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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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Why caffeine can reduce fertility in women
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 ...
May 26, 2011 |
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Researchers control zebrafish heart rate with optical pacemaker
(PhysOrg.com) -- UCSF researchers have for the first time shown that an external optical pacemaker can be used in a vertebrate to control its heart rate.
Chemistry / Analytical Chemistry
Nov 16, 2010 |
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Carbon monoxide reverses diabetic gastric problem in mice
Mayo Clinic researchers have shown that very low doses of inhaled carbon monoxide in diabetic mice reverses the condition known as gastroparesis or delayed stomach emptying, a common and painful complication for many diabetic ...
Jun 01, 2009 |
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