Tag: "radical" at biology news

Gene therapy delivery of nerve growth factors reverses erectile dysfunction in animal model

...g procedure during surgery, recovery from ED after radical prostatectomy may take a long time. In this study, which was led by Joseph C. Glorioso, III, Ph.D., chair of the department of biochemistry and molecular genetics, and Joel Nelson, M.D., chair of the department of urology, University of Pittsburg...

A cherry on top: Tart cherries may alter heart/diabetes factors

...g means better ability to neutralize damaging free radical molecules produced in the body during metabolism. The rats that received cherries had higher antioxidant capacity, indicating lower oxidative stress in their bodies, than those that did not. In addition to blood measures, the researchers measured ...

No magic tomato? Study breaks link between lycopene and prostate cancer prevention

... other important molecules in the cell. Since free radical damage increases with age, there has been a long-h...ld suspicion in the scientific community that free radical damage could increase the risk of prostate cancer, a disease that has been clearly associated with a...

Studies force new view on biology of flavonoids

..., which are more readily used up during their free radical scavenging activity and require constant replenishment through diet, scientists say. However, Frei said, it’s also true that such mechanisms require only relatively small amounts of flavonoids to trigger them ?conceptually, it’s a little like a v...

Need oxygen? Cells know how to spend and save

...are designed to produce energy without excess free radical production at normal oxygen levels. Semenza's team noticed that one particular component of the COX protein complex, COX4, comes in two different forms, COX4-1 and COX4-2. Under normal oxygen conditions, the cells' mitochondria contain mostly CO...

Stress may help cancer cells resist treatment, research shows

...d explain the finding. Another study of men after radical prostatectomy reported increased mood disturbances, which are often associated with elevated stress hormones. Although these studies do not directly address the role of stress hormones, they suggest that stress hormones may play an important role in ...

Loss of a universal tRNA feature reported

...ria was particularly surprising as it represents a radical departure from previously known identity rules for the histidine-carrying tRNAs." He added: "This result implies that tRNA recognition by the enzyme adding histidine to tRNA differs considerably from similar enzymes in other organisms. We have indeed...

QUT scientists on the way to sifting out a cure for HIV

...embranes. "With this in mind we have introduced radical changes to the membrane texture because it is the membrane texture which is crucial to the separation efficiency of the material," he said. "It is scientifically known that a mesh structure is the most efficient form of filtration and we are the f...

Strawberry daiquiris -- the extra-healthy cocktail?

...ed to an increase in antioxidant capacity and free radical scavenging activity within the fruit. While such a boost helped the berries resist decay, the same compounds would also be expected to make the strawberries healthier to eat. Dr Korakot Chanjirakul and colleagues at Kasetsart University in Thailan...

A healthier start to a pig's life

...the increase in resistant strains of bacteria. A radical solution has been found by using a lectin obtained from the red kidney bean plant. Lectins are proteins with the ability to bind cells together; typically red blood cells. The EUREKA Healthy Weaning project coordinator, Professor Stefan Pierzynowski ...

Meat and two neutrons -- the key to a longer life

...more resistant to detrimental processes, like free radical attack. The isotopes replace atoms in susceptible bonds making these bonds stronger. 'Because these bonds are so much more stable, it should be possible to slow down the process of oxidation and ageing,' Shchepinov says. The isotopes could be use...

Cryoablation -- A new treatment option for some kidney tumor patients

...to seek less invasive methods than the traditional radical nephrectomy (removal of cancerous kidney) for the treatment of small tumors, and percutaneous cryoablation is now on the list. With the incidence of kidney cancer steadily increasing over the last 20 years, and the American Cancer Society predicting...

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

...s. The revolutionary improvement in atom transfer radical polymerization (ATRP) now enables large-scale production of many specialty plastics, according to the scientists, whose work appears in a special issue of the Proceedings of the National Academy of Sciences (PNAS) devoted to materials science. This e...

Scientists win grants to develop $1,000 genome sequencing technology

...n is a non-profit institute dedicated to fostering radical breakthroughs in space and technology for the benefit of humanity. "The $10 million prize may be a nice incentive to researchers, but our group at UCSD is more excited about the challenges of overcoming the daunting technical obstacles that must b...

Older men treated for early prostate cancer live longer than those who are not

...earliest stages makes treatment options, such as a radical prostatectomy (surgical removal of the prostate) and radiation therapy, controversial with unpredictable outcomes. Often, recently diagnosed men of this group were advised to just "watch and wait" to see how their situation progressed. "For this s...

Patients to benefit from novel technology revolutionizing high-speed molecular imaging

... larger than in existing technology, constitutes a radical departure from the conventional Anger camera," he detailed. Besides providing improved statistics leading to better image quality and the potential for better and earlier diagnosis of diseases, the D-SPECT camera reduces the time a patient spends on ...

UCI scientists find chlorine may contribute to ozone formation

...y cause of urban ozone is the reaction of hydroxyl radical (OH) with hydrocarbons and nitrogen oxides. OH is ...r 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 ...

Natural vitamin E tocotrienol reaches blood at protective levels

...c acid, which can directly stimulate damaging free radical activity. Fatty acids are related to stroke: They rapidly accumulate when a clot in a vessel stops blood flow to the brain, and play a role in irreversible brain injury. To observe the TCT's effectiveness, rodent neural cells were pretreated with ...

Case Western Reserve University researchers find protein associated with brain cell death

...ascade of reactions that produces unregulated free radical production that eventually leads to the neural cel...limination of the protein resulted in reduced free radical production. Wilkinson said by understanding this biological component in the disease process, it h...

Key stress protein linked to toxicities responsible for Parkinson's, Alzheimer's

...ound in a number of degenerative diseases and free radical stress in nerve cells," said Stuart A. Lipton, M.D...olleagues shows that molecules related to the free radical NO, which is present in elevated levels in neurodegenerative diseases, attacks PDI via a chemical S-...

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