Tag: "hydrogen" at medical news
New oxidation methods streamline synthesis of important compounds
...n, at a late stage in the synthesis, we remove the hydrogen
and replace it with oxygen or nitrogen right where we need it for the next chemical reaction. In the June 13 issue of the Journal of the American Chemical Society, White and graduate student Kenneth J. Fraunhoffer describe the catalytic pathway th...
Green tea may protect the bladder from becoming inflamed
...lls from inflammation when we exposed the cells to hydrogen
peroxide," said Michael B. Chancellor, M.D., profe...ignificantly protected cell lines from exposure to hydrogen
peroxide, which damages or kills cells. The concentrations of EGCG and ECG used in the study were at...
UW study tests topical honey as a treatment for diabetic ulcers
...t (which effectively dehydrates bacteria), and the hydrogen
peroxide secreted by its naturally-occurring enzymes make it ideal for combating organisms that have developed resistance to standard antibiotics. "This is a tremendously important issue for public health," explains Eddy, adding that the Centers f...
'Wrapping' Gleevec fights drug-resistant cancer
... proteins, KIT has packing defects that leave some hydrogen
bonds poorly shielded from water attack," Fernandez said. "These bonds, which are called dehydrons, are in the twilight zone between order and disorder." In KIT, there is a dehydron near the active site that plays a key role in drug resistance. WBZ...
Northwestern chemists develop new method for synthesizing anti-cancer flavonoids
...that sparks this impressive transformation through hydrogen
bonding, which is used frequently in nature. "Nature is the ultimate synthetic chemist and pharmacist," said Scheidt, who looks forward to synthesizing and evaluating new compounds with Bergan. "We may not be quite as sophisticated as nature, but o...
Sustainability of energy, food and water theme of ACS national meeting
... Monday, March 26 MIT chemist seeks to produce hydrogen
fuel by reacting sunlight with water Plants have...ight to split water molecules into its components hydrogen
and oxygen for a renewable source of hydrogen
fuel. Nocera is developing novel, powerful catalysts ...
Using nanomagnets to enhance medical imaging
...gnetic ions, which alter the nuclear properties of hydrogen
in water, offer the advantage of consistent identical design but provide low contrast. The second category encompasses particles of thousands of atoms or crystals, which alter local magnetic fields; they provide contrast variation in a larger region ...
Tooth whiteners do not cause cancer
...ated with increased oral cancer risk. Exposures to hydrogen
peroxide, generally the effective ingredient in to...sks for oral cancer development. Concentrations of hydrogen
peroxide rapidly decline to near undetectable levels usually within 15 to 60 minutes. Given the l...
The smell of iron
...of a phosphine molecule in which one or two of the hydrogen
atoms are replaced with methyl (CH3) groups....
Orange juice is better than lemonade at keeping kidney stones away
...n lemonade and cranberry juice is accompanied by a hydrogen
ion. Ions of hydrogen, but not potassium, countera...d to consider the accompanying positive charge [of hydrogen
ions] whenever one assesses the citrate content of a diet," Dr. Odvina said. ...
Researchers discover how acid reflux leads to esophageal cancer
... exposed to acid, leading to the overproduction of hydrogen
peroxide, and offering a possible explanation for ...his enzyme was removed, acid-induced production of hydrogen
peroxide was reduced, confirming that NOX5 is responsible. Also, when calcium was removed, the preva...
Study identifies potential drug target for Huntington's disease
...s to oxidative stress caused by the application of hydrogen
peroxide with the reactions of normal cells. Although all of the cells reacted with a loss of ATP, a key source of cellular energy, the HD cells which had much lower ATP levels to begin with were much more vulnerable to stress-induced energy loss....
Lessening the impact of climate change on health
...ple that a study suggests that vehicles powered by hydrogen
from renewable energy sources could save 3700-6400 lives a year in the US from reduced air pollution, as well as benefiting climate change. They call for more sustainable transport systems that make more use of public transport, walking, and cycling ...
UCI scientists find chlorine may contribute to ozone formation
...H is a highly reactive molecule made of oxygen and hydrogen
that forms photochemically in air. "For the last 30 years, we've known that the hydroxyl radical is the primary cause of ozone," Saltzman said. "Chlorine plays a similar role. It doesn't take much chlorine to affect ozone chemistry." This study is ...
Gut microbes' partnership helps body extract energy from food, store it as fat
...target for study because of its ability to consume hydrogen
and other byproducts of bacterial digestion of polysaccharides. Accumulation of such byproducts slows polysaccharide digestion. Samuel and Gordon speculated that M. smithii could improve the overall efficiency of digestion of dietary polysaccharides,...
Different options produce similar results
...used whitening strips. One group used a 10 percent hydrogen
peroxide whitening strip and the other group used a 6.5 percent hydrogen
peroxide strip that had a thicker gel layer. The patients used the strips for 44 consecutive days, f...
OHSU research reveals possible future target for delaying or stopping Alzheimer's
...addition, the scientists found increased levels of hydrogen
peroxide in the Alzheimer's mice, likely produced ... function. This results in increased production of hydrogen
peroxide, resulting in a progression of the disease and higher levels of beta amyloid," said Reddy. ...
Researchers discover new disease-causing bacterium in patients with rare immune disorder
...lls called neutrophils use this enzyme to generate hydrogen
peroxide that the cells need to kill bacteria and fungi. Because people with CGD cannot effectively fight off bacterial and fungal invaders, these individuals are at greater risk of developing serious infections of the skin, lungs, lymph nodes and bo...
The case of the 'second tongue'
...giene was increased (frequent use of mouthwash and hydrogen
peroxide mouthwash) and the tongue stud was replaced with a shorter shaft. "Keep the wound clean. Make sure the bar is short so food and bacteria won't enter the site," advises Ellis Neiburger, DDS, lead author of the study. "Replace the metal barbel...
Reduce bloating and excess gas with a common antibiotic
...xcess gaseousness by way of reducing the amount of hydrogen
gas produced in the large intestine. And because rifaximin is non-absorbable, there are no side effects, making it suitable for chronic use. Research has shown that these symptoms are common and often more disturbing to IBS patients, as well as be...