Tag: "irradiation" at biology news
New evidence of radiation risk in childhood leukaemia
...utation rate many cell divisions after the initial irradiation
damage. Yuri Dubrova, Professor of Genetics at the University of Leicester, obtained the first experimental evidence that germ-line mutation rates in unexposed offspring of irradiated male mice do not return to the mutation rates seen in unexposed i...
The truth about organic food
... Are pesticide risks real or imagined? Does food irradiation
pose health risks? Is genetically modified food unsafe? Is organic food more nutritious? Are free-range chickens safer? Is organic farming really better for the environment? How do the media portray organic food issues? Detailed symposium...
FSU scientists develop new tests to detect nut allergens in processed food
...evant to human allergies. They then aimed, through irradiation
alone or in combination with other thermal treatme... proteins remained mostly unchanged throughout the irradiation
and thermal processing, dashing hopes that the treatments would render the healthy snacks safer for ...
Tips from the Journals of the American Society for Microbiology
...er quality is high," say the researchers. Solar irradiation
is the process by which sunlight eradicates bacter...ds that of other tested units, thus maximizing the irradiation
time." (L.F. Caslake, D.J. Connolly, V. Menon, C.M. Duncanson, R. Rojas, J. Tavakoli. 2003. Disi...
Other highlights in the February 4 issue of JNCI
...rradiation The growing interest in partial-breast irradiation
(PBI) and accelerated partial-breast irradiation
(APBI) for treatment of early-stage breast cancer make clear the need for ongoing dialogue and well-...
JCI table of contents, December 15 2003
...host disease (GVHD). Using established bone marrow irradiation
chimeras across multiple miHA-disparate mice, Robert Korngold and colleagues from the Kimmel Cancer Center studied the occurrence of lethal GVHD mediated by donor CD4+ T cells in recipient mice expressing only hematopoietically derived alloantigens. ...
Ultraviolet irradiation in ventilation systems could reduce office sickness
... colleaguesassessed whether ultraviolet germicidal irradiation
(UVGI) of drip pans andcooling coils within office ventilation systems would reduce microbialcontamination, and thus occupants' work-related illness. Employees from three offices in Montreal participated in the study. UVGI wasoff for 12 weeks, then o...
Northern climate, ecosystems driven by cycles of changing sunlight
... Earth's climate," Hu said. "Will changes in solar irradiation
in the future mitigate or exacerbate global warming in the future? They may do both," said Hu, a professor in the plant biology and geology departments at Illinois. "A period of high solar irradiance on top of high levels of greenhouse gases could re...
NASA announces space radiation research grants
... on Long Island, N.Y. The SRL is a new $34 million irradiation
facility scheduled to start delivering beams for experiments in Fall/Winter of 2003. Dr. Raj Kaul, a materials scientist in the Engineering Directorate at NASA's Marshall Space Flight Center in Huntsville, Ala., received his second grant to investig...
Vitamin D analog found to boost radiation
...trates a clear advantage in combining EB 1089 with irradiation
in the control of breast tumor growth, state the researchers. "We're always trying to find drugs that will prevent cancer from recurring, yet be less toxic to the patient than the current chemotherapy regimens," said study co-author David A. Gewirtz,...
Gene defect produces lupus-like disorder
... contributes to the resistance of the bacterium to irradiation
with ultraviolet light. That finding suggested that the Ro/Y RNA complex plays a role in protecting against damage from ultraviolet radiation and could be compromised in lupus patients. Importantly, said Wolin, studies of the immune systems of the kn...
Microbes related to infant lung infections reduced using specialized ventilation system device
...d markedly by installing an ultraviolet germicidal irradiation
device in the ventilation system of its neonatal i...study. "It appears than ultraviolet germicidal irradiation
may decrease the mortality and morbidity associated with hospital-acquired infections. This device ...
Bone marrow generates new neurons in human brains
... regardless of a person's age. It is possible that irradiation
or other treatments that the four patients received might have increased the ability of marrow cells to enter the brain. However, other studies have suggested that bone marrow cells circulating in the blood enter the brain even in healthy subjects w...
Highlights of American Chemical Societys national meeting in Boston
...roccoli pill" to help prevent breast cancer How irradiation
affects our food and packaging Developing needle-free diabetes monitors Discussions on chemical and biological terrorism by leading researchers News releases on these topics and others will be posted on EurekAlert throughout the week of the m...
Making the most of lymphopenia
...uld be initiated immediately after chemotherapy or irradiation
because the reduction in the body's T cells is actually an advantage. "If you have only a small number of T cells," says Theofilopoulos, "It is very likely that, during their subsequent expansion, you will develop a strong T cell response [to the can...
Gene therapy corrects sickle cell disease in mice, Science authors report
...lood-forming stem cells of mice that had undergone irradiation
to kill off their old bone marrow. Ten months afte...ating a way to introduce the therapy without toxic irradiation
to existing bone marrow would be desirable before the method can be used in clinical trials, say the...
Penn researchers explore the role of cell suicide in the development and treatment of cancer
...suspected for several years: that chemotherapy and irradiation
work to treat cancer by tricking the cancer cell into committing suicide. This study is the third of a series of articles that researchers have published in recent months exploring the functional role of the Bcl-2 family of proteins of which Bax a...
Laser treatment reduces scarring after heart attack
... NEW YORK, N.Y., April 16, 2001 - Low-energy laser irradiation
may reduce the severity of scarring of heart tissu...n-Israel Institute of Technology. Low-energy laser irradiation
has been shown to reduce biological "overreaction" to trauma in cell cultures and animal studies, bu...
Obese do not process vitamin D from sunlight as well as lean individuals
...ean and one obese. All were exposed to whole-body irradiation
in a phototherapy unit (tanning bed), and follow-up blood samples were obtained to ascertain serum vitamin D levels. One month later the subjects were challenged with an oral dose of 50 000 IU of vitamin D, and follow-up blood samples again obtained....
Common spices protect bacteria during irradiation
...ding that the spices protect some bacteria against irradiation
was "contrary to expectations," according to the a... to help protect the bacteria's DNA from damage by irradiation
during the study. "However," the article notes, "these compounds may not be the sole protecting agen...