Tag: "oxygen" at medical news

Penn study finds pro-death proteins required to regulate healthy immune function

...y by-product of energy production, called reactive oxygen species or ROS, were not produced. And because ROS... the release of ROS. It is the release of reactive oxygen species by the mitochondria that actually generate the proliferation. We think that is the basis of ...

Reductive stress linked to heart disease

...free radical molecules are produced in reaction to oxygen intake. Free radicals travel the body, triggering chemical reactions that damage proteins and causing them to form aggregates. Many people take antioxidants to prevent heart and other protein-aggregate diseases, but there actually is scant evidence t...

Inhaled nitric oxide safe for tiny preemie lungs, UCSF study finds

...breathe independently. Mechanical ventilation with oxygen keeps these infants alive but often results in chronic lung disease, or bronchopulmonary dysplasia (BPD), with severe inflammation and retarded development of the lungs. BPD is the most common long-term lung disease in premature infants in the Unit...

New oxidation methods streamline synthesis of important compounds

...thesis, 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 they used to synthesize a der...

Organic farming can feed the world, U-M study shows

... is the chief culprit in creating dead zones---low oxygen areas where marine life cannot survive. Proponents of organic farming argue that conventional farming also causes soil erosion, greenhouse gas emission, increased pest resistance and loss of biodiversity. For their analysis, researchers defined th...

New research spares children the pain of the needle

...ered as quickly, suffered less pain, required less oxygen therapy in hospital and were able to go home sooner than those given injections. Two-and-a-half million children are affected by pneumonia each year in Europe. Until now, most children have been admitted to hospital and treated with injected antibi...

Oxygen trick could see organic costs tumble

A simple, cheap treatment using just oxygen could allow growers to store organic produce for l... simple week long pre-treatment with low levels of oxygen at 20C was shown to prevent scald formation - a type of chilling injury associated with prolonged co...

USC researchers show that molecular markers predict tumor recurrence

...blood vessel formation that provides nutrients and oxygen to cancerous growths. Researchers analyzed blood specimens that were obtained at USC medical facilities between 1999 and 2007, testing whether a specific pattern of polymorphisms in 33 genes involved in cancer progression predicted tumor recurrence. ...

Explaining a link between strokes and Alzheimer's

...he Leeds team has shown how an incident of reduced oxygen to the brain caused by the stroke can leave the ...ed: Our research is looking into what happens when oxygen levels in the brain are reduced by a number of factors, from long-term conditions like emphysema and...

Benefits of school-based fitness programs fade after summer

...reak, average fitness level as measured by maximum oxygen consumptionthe amount of oxygen the body can use, with higher levels indicating better fitnessdecreased by 3.2 milliliters per kilog...

Phase II study shows combination improves survival of metastatic melanoma patients

...ion of new blood vessels to satisfy the increasing oxygen and nutritional needs of the growing tumor. Furthermore, there is evidence that overproduction of VEGF in response to chemotherapy may allow tumors to become more aggressive and resistant to the effects of chemotherapy by different mechanisms. Thus, ...

Journal Sleep: Longer CPAP use at night can normalize one's daytime functioning

...that characterize sleep apnea and restoring normal oxygen levels. ...

Study explains why patients with OSA are at higher risk for cardiovascular disease

... movements, breathing rates, blood pressure, blood oxygen saturation and heart rhythm, as well as direct observation of patients during sleep. The men were comparable in age, blood pressure and metabolic profiles, but the OSA patients had a higher bodymass index, though the difference was not statisticall...

Exercise test may help predict mortality risk in heart failure patients

...t that measures the lungs' efficiency at consuming oxygen and expiring carbon dioxide. The test has been sho...archers measured pulmonary efficiency by analyzing oxygen consumption and carbon dioxide expiration during an exercise session on a stationary bicycle. "Th...

Scripps Research awarded $17 million for adult stem cell use to treat eye diseases

...n response to "ischemia" (decreased blood flow and oxygen delivery due to abnormalities in small blood vesse...dlander says, "we hope to provide the eye with the oxygen it needs so it won't have to grow new and potentially damaging vessels." In groundwork laid over ...

Limiting stroke damage is focus of study

...seconds of a clot or hemorrhage cutting off blood, oxygen and glucose, the neuron's powerhouses, or mitochon...flow is reduced by about 60 percent. "It's enough oxygen and energy for neurons to survive for some time, but not enough to function properly," says Dr. Kiro...

UCLA imaging study reveals how pure oxygen harms the brain

...t growing research suggests that inhaling straight oxygen can actually harm the brain. For the first time, ..., the medical community has championed 100 percent oxygen as the gold standard for resuscitation. But no one has reported what happens inside our brains when...

Sleep apnea increases risk of heart attack or death by 30 percent

...ght for a few years can starve the heart of enough oxygen when it is combined with the bodys decreased oxygen intake due to the frequent breathing stoppages during the night, Dr. Shah says. ...

Sleep apnea may increase risk of diabetes

...ated, can lead to the development of diabetes. Low oxygen levels also appear to play an important role. The impact of diabetes on public health is great, Dr. Botros says. Diet and exercise, along with a medication regimen, are the mainstays of treatment, but unfortunately diabetes remains a major public he...

Commonly used drug offers promise for premature babies

... it's turning out new brain cells, it demands more oxygen and more blood flow, a demand that the body meets ...the blood vessels break, cutting off the supply of oxygen to some brain tissue and directly damaging parts of the brain. Babies most at risk are those born ...

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