News tagged with nitric oxide
New study sheds light on evolutionary origin of oxygen-based cellular respiration
Researchers at the RIKEN SPring-8 Center in Harima, Japan, have clarified the crystal structure of quinol dependent nitric oxide reductase (qNOR), a bacterial enzyme that offers clues on the origins of our ...
Jan 22, 2012 |
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Heart drug may be effective for managing certain cancers: study
Researchers at Queen's University have identified a new mechanism that could potentially explain why the body's immune system sometimes fails to eliminate cancer. The new findings shed light on the possible cause of immune ...
Dec 14, 2011 |
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L-arginine: Supplement tested on fit, athletic men shows no advantage
One of the most recent, popular supplements for athletes looking to boost performance comes in the form of a naturally-occurring amino acid called L-arginine.
Nov 22, 2011 |
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'Moonlighting' enzyme unravels arginine paradox
(Medical Xpress) -- Nearly 20 years ago, the journal Science tagged nitric oxide as the "molecule of the year." Since that time, researchers have tried to study and target this simple molecule that is involved in virtually every ...
Nov 13, 2011 |
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Reversing smoke-induced damage and disease in the lung
By studying mice exposed to tobacco smoke for a period of months, researchers have new insight into how emphysema and chronic obstructive pulmonary disease (COPD) develops. In the October 14th issue of Cell they also report ...
Oct 13, 2011 |
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Bacteria forge nitrogen from nitric oxide: Scientists unravel key pathway in the nitrogen cycle
The anaerobic oxidation of ammonia (anammox) is an important pathway in the nitrogen cycle that was only discovered in the 1980s. Currently, scientists estimate that about 50 percent of the nitrogen in the atmosphere is forged ...
Oct 05, 2011 |
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Inflammatory mediator enhances plaque formation in Alzheimer's disease
Alzheimer's disease (AD) is a devastating neurodegenerative disorder that causes progressive cognitive impairment and memory loss. Now, a new study published by Cell Press in the September 8 issue of the journal Neuron identi ...
Medicine & Health / Neuroscience
Sep 07, 2011 |
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Newly discovered cell mechanism uses amplified nitric oxide to fight C. diff
Groundbreaking research encompassing Case Western Reserve University School of Medicine and University Hospitals Case Medical Center, has uncovered a natural defense mechanism that is capable of inactivating the toxin that ...
Aug 21, 2011 |
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Antioxidants of growing interest to address infertility, erectile dysfunction
A growing body of evidence suggests that antioxidants may have significant value in addressing infertility issues in both women and men, including erectile dysfunction, and researchers say that large, specific clinical studies ...
Jul 28, 2011 |
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Researchers work to take the pressure off newborns' lungs
Children born with heart defects that pummel their lungs with up to three times the normal blood volume quickly find their lungs in jeopardy as well.
Jul 27, 2011 |
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New target found for nitric oxide's attack on salmonella bacteria
A new target for nitric oxide has been revealed in studies of how it inhibits the growth of Salmonella. This bacterium is a common cause of food-poisoning.
Jul 23, 2011 |
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To combat deadly brain cancer, target the stem cells
Researchers have uncovered a new target that could stop the growth of glioblastoma, a deadly form of brain cancer. In the July 8th issue of the journal Cell, a Cell Press publication, a new study identifies an enzyme found ...
Jul 07, 2011 |
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Scientists discover new molecular pathway involved in wound-healing and temperature sensation
Scientists from The Scripps Research Institute have identified a surprising new molecular pathway in skin cells that is involved in wound-healing and sensory communication.
Jun 28, 2011 |
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Drug boosts snakebite survival time by half: study
Rubbing snakebites with an ointment that slows the functioning of lymph glands could boost survival times by 50 percent, according to a study released Sunday.
Medicine & Health / Medications
Jun 26, 2011 |
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Environmentally friendly rockets
(PhysOrg.com) -- Many rockets, satellites, and spacecraft are driven by hydrazine, sometimes with an oxidizing agent like nitric acid or dinitrogen tetroxide. When filling tanks with these highly toxic substances, ...
May 27, 2011 |
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Nitric oxide
Nitric oxide or nitrogen monoxide is a chemical compound with chemical formula NO. This gas is an important signaling molecule in the body of mammals, including humans, and is an extremely important intermediate in the chemical industry. It is also an air pollutant produced by cigarette smoke, automobile engines and power plants.
NO is an important messenger molecule involved in many physiological and pathological processes within the mammalian body both beneficial and detrimental. Appropriate levels of NO production are important in protecting an organ such as the liver from ischemic damage. However sustained levels of NO production result in direct tissue toxicity and contribute to the vascular collapse associated with septic shock, whereas chronic expression of NO is associated with various carcinomas and inflammatory conditions including juvenile diabetes, multiple sclerosis, arthritis and ulcerative colitis.
Nitric oxide should not be confused with nitrous oxide (N2O), a general anaesthetic and greenhouse gas, or with nitrogen dioxide (NO2) which is another air pollutant. The nitric oxide molecule is a free radical, which is relevant to understanding its high reactivity.
Despite being a simple molecule, NO is a fundamental player in the fields of neuroscience, physiology, and immunology, and was proclaimed “Molecule of the Year” in 1992.
For more information about Nitric oxide, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
