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Tag: "radiation" at biology news

Primates take weather into account when searching for fruits

...iod of cold and cloudy days. Temperature and solar radiation are known to accelerate maturation of fruits and i... of the relationship between temperature and solar radiation and the maturation rate of fruit and insect larvae. The findings are also consistent with the idea t...

Combined treatment extends life expectancy for lung cancer patients

Combining thermal ablation with radiation therapy extends average life expectancy and decrea...rate at three years increased from 20 months after radiation alone to 42 months when thermal ablation was followed by radiation for treatment of non-small-cell l...

'Pinball protons' created by ultraviolet rays and other causes can lead to DNA damage

...rt how protons, knocked away by such mechanisms as radiation or chemical exposure, can cause lesions in DNA. The work was done entirely on computers in the Center for Computational Chemistry, part of the Franklin College of Arts and Sciences at UGA. "This kind of damage in DNA subunits is about as basic as yo...

One therapeutic dose of radiation causes 30 percent spongy bone loss in mice

Mice receiving just one therapeutic dose of radiation lost up to 39% of the spongy portion of their inne...hysiology, has implications for patients receiving radiation therapy and astronauts traveling on long space flights. "We were really surprised at the extent of...

Snakes' virtual glasses, leopard spots and all-optical transistors

...t organs. The organs are sensitive to the infrared radiation emitted by warm prey such as rats, rabbits, and Samuel L. Jackson. An optical analysis of pit organs suggests that snakes shouldn't be able to use the organ to track prey very well because the pit aperture is large and the organ is not very deep. How...

Prozac's target revealed

...evels of exposure to a particular kind of damaging radiation that's prevalent in space. ...

Major initiative proposed to address amphibian crisis

...today on contaminants and the effects of UVB solar radiation that may amplify the impacts of the fungus which causes chytridiomycosis. Amphibian declines have been documented in North and South America, Europe, Asia and Africa. Several species in the Pacific Northwest are listed as candidates for the endang...

Protein's role in regulating cell death sets direction for cancer research

...t improve the ability of chemotherapeutic drugs or radiation treatment to specifically kill tumour cells in cancer patients. ...

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

...lar Imaging." "Patient health considerations and radiation safety standards limit the radiation dose that can be administered for the purpose of diagnostic imaging," said Patton. "In addition to t...

Weizmann Institute scientists discover a molecular security mechanism for keeping mutations in check

...stickler for accuracy ?if it runs into damage from radiation or exposure to harmful substances on the DNA strand, it can stop in its tracks, unable to continue copying. A stoppage of this sort spells death for the cell. But not all damage to DNA is critical and, to avoid the wholesale death of cells, a second ...

Thermal imaging shatters arousal gender gap myth

...ed imaging using thermographic cameras that detect radiation emitted by objects based on their temperature. Because of its usefulness in detecting warm objects in the dark, most people know it as the technology used in night vision goggles for military operations. Previously, sex researchers have mea...

Mayo Clinic Cancer Center: Harnessing the measles virus to attack cancer

...a multiforme that has progressed after surgery and radiation therapy, and be candidates for surgery. They also must be immune to measles, either having had the disease or been vaccinated against it. In the 1970s, measles infections were observed to cause regression of pre-existing cancer tumors in children....

Scientist works to improve treatment for brain tumors

...surgery, a knifeless approach to brain surgery and radiation therapy. ...

Stem cell expansion

... is defective or has been destroyed (often through radiation or chemotherapy of cancer). HSCs are very rare, and it is often hard to obtain enough of them for a successful transplant. To overcome this limitation, Hans-Peter Kiem and colleagues have developed a way to expand HSCs in the laboratory prior to tran...

Jumping gene could provide non-viral alternative for gene therapy

..., such as making the cell resistant to damage from radiation therapy. They found the piggyBac transposon was ... gene into the cell," says Dr. Joseph M. Kaminski, radiation oncologist at the Medical College of Georgia Cancer Center and a corresponding author on research pu...

MIT nanoparticles may help detect, treat tumors

... medicines that could kill cancer cells, replacing radiation or chemotherapy treatments that cause negative side effects such as hair loss or nausea. The researchers hold a provisional patent on their work. ...

Second opinion yields treatment changes for half of patients

...oted to treating breast cancer, including surgery, radiation oncology, medical oncology, radiology and patholog...r the case was reviewed by medical oncologists and radiation oncologists prior to surgery. Results of the study appear in the Nov. 15 issue of the journal Can...

Buildup of damaged DNA in cells drives aging

...dition. Extreme sensitivity to ultraviolet (UV) radiation from sunlight is a hallmark of diseases caused by defective DNA repair—an important mechanism by which skin and other cell types normally cut out, or excise, damage to their DNA caused by UV light. Defects in one DNA repair mechanism, nucleotide exci...

Cancer stem cells linked to radiation resistance

...ls, help brain tumors to buffer themselves against radiation treatment by activating a "repair switch" that ena...s' ability to activate the repair switch following radiation treatment. This finding may lead to the development of therapies for overcoming radiation resistance...

Bacteria that use radiated water as food

... of years old -- and depend not on sunlight but on radiation from uranium ores for their existence. Coauthors... but rather from decomposition of water exposed to radiation from uranium-bearing rocks. High density DNA microarray analysis revealed a vast number of bacteri...

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