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Tag: "radiation" at biology news

'Smart drug' targets deadly brain cancer

...astoma multiforme is usually treated with surgery, radiation therapy and chemotherapy -- and median survival is...nder way will test the combination of CCI-779 with radiation therapy in patients who have newly diagnosed glioblastoma multiforme. They will also test CCI-779 in...

Whole-body MRI Takes Less Than 20 Min To Scan A Patient's Entire Body For Cancer Spread To Bone

... scan—which means it’s noninvasive and there is no radiation risk to the patient—whole-body MRI can also detect metastases in other parts of the body besides the bones, such as in the brain, lung or liver,?said Dr. Vilanova. Dr. Vilanova will present the full results of the study on May 16 during the American...

Penn Researchers Use Robotic Surgery

...treatments often involve a combination of surgery, radiation therapy, and chemotherapy. In many cases, surgery offers the greatest chance of cure. Conventional cancer surgery can consist of an almost ear-to-ear incision across the throat or splitting the jaw in half. This can result in speech and swallowing de...

Two new retroviruses—transmitted from animals—identified

...treatments often involve a combination of surgery, radiation therapy, and chemotherapy. In many cases, surgery offers the greatest chance of cure. Conventional cancer surgery can consist of an almost ear-to-ear incision across the throat or splitting the jaw in half. This can result in speech and swallowing de...

Chemical Engineer Kao Explores Antibiotic Synthesis With DNA Chips

...to a new strain. Drug companies use chemicals and radiation to damage DNA and induce mutations. But it's not easy to detect these single base-pair mutations in the so-called industrial mutant strains. Kao's group, for example, detected the presence of an unidentified regulator gene altering the timing of eryt...

Atmosphere may cleanse itself better than previously thought

... the team to characterize the minute quantities of radiation absorbed by a substance called methyl hydroperoxide when it breaks up in sunlight and forms OH radicals. Methyl hydroperoxide is one of the substances that can absorb light in the lower UV spectrum, and the team theorizes that the sensitive laser tec...

Woods Hole Research Center plans controlled burn in Amazon rainforest

... prevents all but a tiny portion of incoming solar radiation from reaching the forest interior, keeping the litter layer too moist to sustain a fire. Now large areas of forest are selectively logged prior to being settled, leaving holes in the canopy; longer, more intense dry seasons provoke leaf thinning; and...

Looks matter to female barn swallows

...ate University in Tempe. "Factors like ultraviolet radiation from the sun, soiling and even feather degrading bacteria are known to affect the color of bird feathers once they are grown, and perhaps the best males are those who spend more time preening and protecting their plumage." The paper's other co-autho...

Researchers devise new technique for creating human stem cells

... the embryonic stem cell nucleus with chemicals or radiation would induce the cell's suicide program, called apoptosis, he said. Melton emphasized that "at this at this stage in our understanding, the hard fact is that the only way to create an embryonic stem cell from a somatic cell is by nuclear transfer in...

Compound from Chinese medicine shows promise in head and neck cancer

... allowed some patients to undergo chemotherapy and radiation therapy instead of surgery, this form of cancer is often resistant to chemotherapy. When the cancer does not respond to these powerful drugs, patients must resort to surgery. "Patients really benefit long-term by avoiding surgery because the side ef...

Duke Experiments Boost Radiation's Cancer-Killing Effects

...ncer growth. Blocking a protein called HIF-1 after radiation therapy doubled the length of time it took for hum...n cancers to begin growing again in mice, said the radiation biologists from the Duke Comprehensive Cancer Center. Each therapy alone had limited or no benefit ...

IBM Transforms the Art of Scientific Expeditions

...ncer growth. Blocking a protein called HIF-1 after radiation therapy doubled the length of time it took for hum...n cancers to begin growing again in mice, said the radiation biologists from the Duke Comprehensive Cancer Center. Each therapy alone had limited or no benefit ...

MERIS monitoring tracks planetary photosynthesis levels

...gen we breathe. The fraction of incoming solar radiation useful for photosynthesis that is actually absorbe...ex (MGVI) provides FAPAR values based on reflected radiation from the Earth's land surface. EC-JRC is responsible for the processing algorithm that yields the MG...

Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

...Both of these changes increase the amount of solar radiation that goes into heating rather than being reflected...e is a shorter period of snow on the ground, solar radiation is absorbed by the land surface more readily and contributes to heating, thus accelerating the melti...

Pollution-eating bacteria produce electricity

... for the organism and is highly resistant to heat, radiation and drying. Such characteristics could prove useful in future microbial fuel cell designs where the device need not always be operational but must survive long periods of hazardous conditions before being used. "The generation of electricity is one ...

The ecological effects of the Chernobyl disaster

...go Reactor number 4 at Chernobyl exploded, sending radiation across a large region of what is now the Ukraine, ...tium 90 (90Sr) and Cesium 137 (137Cs). Yet despite radiation levels dangerous to humans, most natural areas in the region have rebounded, and by ecological stand...

New study finds how cells with damaged DNA alert the immune system

...erial -- the DNA damage pathway -- was exposure to radiation and chemotherapy drugs. They found that cells in which the DNA damage pathway was triggered were the ones that exhibited an increase in the expression of special proteins on the cell surface. These "ligands" on the membrane are specific to the NKG2D...

Renewed hope for Parkinson's patients

...erial -- the DNA damage pathway -- was exposure to radiation and chemotherapy drugs. They found that cells in which the DNA damage pathway was triggered were the ones that exhibited an increase in the expression of special proteins on the cell surface. These "ligands" on the membrane are specific to the NKG2D...

NC State researchers redesign life for Mars and beyond

... and life in space - extreme temperatures,drought, radiation and gravity, for example - are not easily remedied...r class to investigate new mechanisms for reducing radiation damage in spring 2007. ...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

... eliminate months of debilitating chemotherapy and radiation treatment, he adds. "The laser we used is a 3-centimeter beam that's held like a flashlight," he notes. "We can take the beam and put anywhere we want. We can shine it on a local area of the skin or inside an internal organ using a fiber-optic devic...

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