Radical in Biological News

Freezing prostate cancer does a man's body good

... in the breast-sparing surgery that replaced radical mastectomy as the preferred treatment for breast ... dysfunction (impotence) that result from more radical prostate cancer treatments. It also represents an ... or thinking about getting a 'nerve-sparing' radical prostatectomy, get mapped. If TRUS doesn't show ...

Case Western Reserve researchers looking at light-induced toxins in air and water

... these compounds can release a nitric oxide (NO) radical when exposed to light. Crespo says one of the ... of this research is to harness the power of these radical compounds for biological applications. "Once ... as light-triggered, time- and site-controlled NO radical donors for therapeutic applications," he says. ...

Pitt, NETL researchers report molecular chain reaction thought to be impossible

... of one molecule, creating a highly reactive free radical that attacked the sulfur-sulfur bond of the neighboring molecule. The radical split the bond, resulting in a new molecule and a new radical that proceeded to the sulfur-sulfur bond of the ...

Berkeley researchers identify photosynthetic dimmer switch

... ground state and turning the zeaxanthin into a radical cation which, unlike an excited chlorophyll ... demonstrate that the generation of the zeaxanthin radical cation occurs exclusively in the three minor ... the charge-transfer with zeaxanthin that produces radical cations. Furthermore, it appears that this ...

Button mushrooms contain as much anti-oxidants as expensive ones

... boost the bodys immune system by acting as free radical scavengers, helping to mop up cell damage caused ... when they measured the respective mushrooms free radical scavenging ability. The French team also found ... white button mushrooms have as much, if not more, radical scavenging power as mushrooms currently touted ...

Boston University biomedical engineers find chink in bacteria's armor

... the endpoint of this pathway is excessive free radical production. Free radicals -- such as hydroxyl ... This hidden pathway and resultant free radical overload appears to help current antibiotics do ... the bacterial defense mechanisms to hydroxyl radical damage, you can potentiate or enhance the ...

Carnegie Mellon's Kris Matyjaszewski recieves EPA's Presidential Green Chemistry Challenge Award

... for the development of an environmentally low-impact form of Atom Transfer radical Polymerization (ATRP), a widely used method for preparation of functional ... is among the most effective and most commonly used methods of controlled radical polymerization (CRP). It allows scientists to easily form polymers by ...

Rumbaugh's theory links positions of Wilson, Skinner

... In E.O. Wilson and B.F. Skinner: A Dialogue Between Sociobiology and radical Behaviorism (Springer 2009, Hardcover ISBN: 978-0-387-89461-4), Naour uses ... description of the place occupied by rational behaviorism relative to radical behaviorism within the larger evolutionary framework, suggesting a 'kind ...

Biomedical engineers' detective work reveals antibiotic mechanism

... had this same underlying pathway that caused over-production of hydroxyl radical molecules which contributed to bacterial cell death. The group's new ... needed to discover how these antibiotics specifically triggered hydroxyl radical production. The researchers found that the gene clusters of interest ...

Methane gas levels begin to increase again

... and coal industries, and is destroyed by reaction with the hydroxyl free radical (OH), often referred to as the atmosphere's "cleanser." One surprising ... At present, however, it is uncertain whether such a drop in hydroxyl free radical concentrations did occur because of the inherent uncertainty in the ...

NIEHS invests $21.25 million to find environmental causes of Parkinson's disease

... toxicants may contribute to Parkinson's disease by producing free radical stress that mimics or enhances the effects of known genetic mutations. The ... new lead compounds that can preserve protein function by reducing free radical stress. "The UCLA and Emory CNS grants will extend the exciting lines ...

Multitasking nanotechnology

... image of a self-assembled monolayer of a polychlorotriphenyl methyl radical patterned on a quartz surface. This multifunctional molecule behaves as an ... be used as read-out mechanisms. "The ultimate goal is to employ these radical building blocks to construct nanometre-scale devices addressed to specific ...

Rosemary chicken protects your brain from free radicals

... report that the herb rosemary contains an ingredient that fights off free radical damage in the brain. The active ingredient in rosemary, known as carnosic ... Lipton (Burnham Institute), found that CA becomes activated by the free radical damage itself, remaining innocuous unless needed, exactly what is wanted ...

Carnegie Mellon scientists develop nanogels that enable controlled delivery of carbohydrate drugs

... drugs. The scientists created the nanogels using atom transfer radical polymerization (ATRP), which will ultimately enable the nanogels to ... of the American Chemical Society in Boston. ATRP, a controlled living radical polymerization process, allows chemists to precisely regulate the ...

Wolf reintroduction proposed in Scottish Highland test case

... are gradually lowered. The idea of reintroductions and large-scale ecological restoration seems too intractable, complex, open-ended, confronting or radical to be feasible." In light of that, the scientists are proposing a substantial test case on a Scottish island or a major fenced area that would ...

Laboring without the labor bed: It's a good thing

... Nursing Research at the University of Toronto, PLACE included 62 women at two Toronto teaching hospitals. Hodnett devised a set of simple, but radical modifications to the standard hospital labour room, with the intention of surrounding the women and their caregivers with specific types of auditory, ...

Green tea may affect prostate cancer progression

... good prognostic indicators of metastatic disease. The study included 26 men, aged 41 to 72 years, diagnosed with prostate cancer and scheduled for radical prostatectomy. Patients consumed four capsules containing Polyphenon E until the day before surgery four capsules are equivalent to about 12 cups of ...

Agent Orange exposure increases veterans' risk of aggressive recurrence of prostate cancer

... to Agent Orange are at increased risk of aggressive recurrence of prostate cancer, researchers report. A study of 1,495 veterans who underwent radical prostatectomy to remove their cancerous prostates showed that the 206 exposed to Agent Orange had nearly a 50 percent increased risk of their cancer ...

ASBMB Annual Meeting to feature talks on the biochemistry of aging

... which DNA damage can drive the tissue degeneration associated with aging as well as a platform to test anti-aging therapies like stem cells and free radical scavengers. ...

Fluorescent cancer cells to guide brain surgeons

... tumor cells can form satellites in surrounding tissue. Therefore, it is almost impossible to remove the tumor tissue completely by surgery. Yet, radical surgical removal of the tumor would substantially improve the prognosis of patients. Surgeons are confronted with the difficulty of discriminating ...

Source of major health benefits in olive oil revealed

... and colleagues compared the effects of four related polyphenolic compounds on red blood cells subjected to oxidative stress by a known free radical generating chemical. DHPEA-EDA was the most effective and protected red blood cells even at low concentrations. The researchers say the study ...

Recession Puts Focus on Business Optimisation and Excellence to Strengthen Business Core

... The usual strategy of following the "order of practice of the industry" would be to review headcount, freeze and reduce budgets and other radical cost-cutting measures. The consequence of overreacting to this, is that it may handicap a company’s future potential when demand recovers ....

Covering the bases: Quantum effect may hold promise for low-cost DNA sequencing, sensor applications

... think of placing on a device is sensitive on a length scale that is longer than the separation between bases." Lindsay believes there may be a radical solution. The rules of attraction Dr. Lindsay's technique for observing DNA sequences relies on devices known as scanning tunneling- (STM) ...

Pulmonary hypertension in children may result from reduced activity of gene regulator

... uses arginine to make nitric oxide and ADMA, an arginine analogue, can bind to the nitric oxide precursor so it instead becomes a source for free radical generation. Genes that regulate transfer of carnitine, an amino acid that regulates energy metabolism in the cell, also are out of whack so the ...

CO2 drop and global cooling caused Antarctic glacier to form

... in the ice sheets of Antarctica. And, there are many questions regarding the glacier's stability, the temperature thresholds that would cause radical glacier melting, and the rate at which it would change, according to Pagani. "Our findings point to the difficulty of modeling accurate temperatures ...

New MegaMatcher Accelerator Boosts Speed for High-Volume Biometric Identification and Database Duplicate Searching

... in voter databases and border control, among others," said Dr. Algimantas Malickas, CEO of Neurotechnology. "MegaMatcher Accelerator provides a radical increase in matching speed, enabling implementation of applications that were difficult or even impossible to implement before." Neurotechnology ...

Queen's chemist sheds light on health benefits of garlic

... "Basically the allicin compound has to decompose in order to generate a potent antioxidant," explains Dr. Pratt, who is Canada Research Chair in Free radical Chemistry. "The reaction between the sulfenic acid and radicals is as fast as it can get, limited only by the time it takes for the two molecules to ...

2009 Damon Runyon-Rachleff Innovation Awards granted for pioneering ideas in cancer research

... concept will be able to be developed with full vigor." Ivan Maillard , MD, PhD, and Yi Zhang, MD, PhD, both of the University of Michigan: for radical Improvements of Bone Marrow Transplant Safety Bone marrow transplantation is frequently used to treat cancer, mainly leukemias and lymphomas. ...

Study: Did early climate impact divert a new glacial age?

... backed by powerful simulations on the world's most advanced computer climate models, is reshaping that view and lending strong support to the radical idea that human-induced climate change began not 200 years ago, but thousands of years ago with the onset of large-scale agriculture in Asia and ...

An essay proves that vegetation could recover in the ski resort of Sierra Nevada

... successfully in the laboratory. According to Serrano, the effectiveness of the regulators has been tested in aspects such as the formation of the radical system, stem elongation, cotyledon expansion (simple leaves which feed the plant) or leaves appearance. Once the treatments are applied to the ...

Snowy owl -- a marine species?

... Wildlife satellite studies could lead to a radical re-thinking about how the snowy owl fits into the Northern ecosystem. "Six of the adult females that we followed in a satellite study spent most ...

Vitamin C lowers levels of inflammation biomarker considered predictor of heart disease

... who might benefit from taking vitamin C. The study led by Block, currently online and scheduled to appear in the Jan. 1 issue of the journal Free radical Biology and Medicine , shows that for healthy, non-smoking adults with an elevated level of CRP, a daily dose of vitamin C lowered levels of the ...

Avian flu threat: New approach needed

... emphasising access and equity as well as questions of organisational architecture and governance. "The One World, One Health initiative is a radical departure from the conventional sectoral approaches to health. It is essential, but presents many challenges. We have identified 10 challenges for ...

Caltech geobiologists discover unique 'magnetic death star' fossil

... Kopp of Princeton University, who first began working on the project while a graduate student at Caltech. "These fossils may be telling a story of radical environmental transformation: imagine a river like the Amazon flowing at least occasionally where the Potomac is today." ...

Study finds genetic variant plays role in cleft lip

... currently a post-doctoral fellow at the University of Southern California and a recent graduate of the University of Iowa Graduate Program in Free radical and Radiation Biology, who worked in Domann's lab. That lab was studying the role of AP2 in cancer, and so, already had developed research technology ...

Carbon dioxide 'scrubber' captures greenhouse gases

... doing things we know how to do, like wind power nuclear power and 'regular' carbon capture and storage, it's also vital to start thinking about radical new ideas and approaches to solving this problem." Energy-efficient and cost-effective air capture could play a valuable role in complementing ...

Researchers note differences between people and animals on calorie restriction

... diets to improve health and lengthen life, they should control not only calories and fat but also keep an eye on protein. Fontana isn't proposing radical low-protein diets. Instead, he is suggesting the current recommended daily allowance (RDA) for protein, which is 0.82 grams of protein per kilogram ...

'1-hit' event provides new opportunity for colon cancer prevention, say Fox Chase researchers

... with the function of the APC protein as a tumor suppressor, including how the cell moves, interacts with other cells, divides, responds to free radical damage and, ultimately, self-destructs when growth threatens to go out of control. "The two-hit hypothesis is applicable to most cancers because ...

National security remedies among topics at surveillance confab

... lead the discussion about the "open review" experiment, a concept being introduced for the first time this year at the AVSS conference. This is a radical innovation in the scholarly review process aimed at addressing some of the issues facing the traditional "closed review" system in the jurying ...

TVA fertilizer technology used worldwide -- but few new products since 1970s

... to the world far outweigh the public investment that the United States made in fertilizer research and development. "It's time to launch a radical initiative to develop a new generation of energy-efficient fertilizers to help avert hunger and famine." TVA Achievements TVA developed ...