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Tag: "harmful" at biology news

Dartmouth study finds that arsenic inhibits DNA repair

...osure to drinking water arsenic may exacerbate the harmful effects of smoking or other exposures." Andrew explains that in regions of the United States where the rock contains higher levels of arsenic, the greater the likelihood that drinking water sources contain some potential adverse levels of the toxin....

Purdue creates new low-cost system to detect bacteria

... reduce the time it takes for industry to identify harmful organisms in food processing. Scientists in food-p...ethod, it takes less than five minutes to identify harmful organisms after they have grown in a petri dish. The analysis is faster than any other methods in ex...

DNA: Bacteria's survival ration

...rom dead cells in the human body may be sustaining harmful bacteria. One of the pathogens implicated in cystic fibrosis is suspected of feeding on DNA in lung tissue, Finkel said. Biofilms, which have been linked to chronic infections, also may harbor nutritionally competent germs. If researchers succeeded...

Cell phone emissions excite the brain cortex

...ense use of cellular phones in daily life might be harmful or beneficial in brain-diseased subjects," they conclude. "Further studies are needed to better circumstantiate these conditions and to provide safe rules for the use of this increasingly more widespread device." ...

First human study confirms that immune cells can be a primary cause of bone loss in gum disease

...rch validates our hypothesis that immune cells are harmful in gum disease," said Dr. Kawai. "It's a groundbreaking discovery because it truly gives a new understanding of periodontal disease, while also raising interesting questions about immune cells. We hope this work will help us save people's teeth in th...

How plants avoid feeling the burn

Too much sun ?for plants as well as people ?can be harmful to long-term health. But to avoid the botanical eq...n, which acts like sunscreen to ward off the sun's harmful rays. "We knew that biomolecules called carotenoids participate in this process of photoprotection,...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...they also may be used to generate signals to repel harmful bacteria from the surfaces of surgical tools like ...ied to glow fluoresecent green when they contact a harmful chemical or biotoxin. Because such nanostructures are cheap, extremely light and small, and easy t...

Cigarette smoke blocks cell repair mechanism, University of Florida study shows

...maged and sitting there it's going to provide some harmful effect later on." Jose Russo, M.D., a researcher at the Fox Chase Cancer Center in Philadelphia who has studied how breast epithelial cells transform after exposure to the chemical benzo[a]pyrine, which is found in tobacco smoke, called the UF find...

Virtual realities against pain

...of pain, with the amount of attention given to the harmful stimulus affecting the perception of the pain. ...rom the patient to compete with the signals of the harmful stimuli. The advanced distraction techniques (ADTs) recently developed use 3D images combined wit...

The molecular mechanism of a diabetes vaccine revealed

...of T cell that regulates the amount of potentially harmful T cells available. In addition, T cells treated with p277 cause the delinquent T cells to secrete anti-inflammatory substances instead of the inflammation-causing ones that they usually make which lead to autoimmune disease. This double action of the...

For diseases, when it comes to sharing a home, only close relatives will do

...t are needed to better understand and confront the harmful effects of diseases. ...

Research reveals inner workings of immune system 'thermostat'

...ough of the pro-inflammatory warriors that destroy harmful bugs and cause inflammation. This finding established the notion that tyk2 signaling controlled Interleukin 12, the furnace side of the system. But what controlled Interleukin 10, the air conditioner? To find out, Yap and his team conducted a serie...

Nicotine exposure during development leads to hearing problems

...gests to us precisely what aspect of smoking is so harmful in pregnancy when it comes to cognitive hearing de...e well-known physical under-development related to harmful chemicals in cigarette smoke, exposure to nicotine appears to be enough to cause serious problems on...

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

...to contact with beta-amyloid fibrils that form the harmful brain plaque. The primary goal of this study was to evaluate potential signaling intermediates upstream from the oxidation, said the researchers. They had an interest in a group of signaling molecules (guanine nucleotides exchange factors) that a...

Fatty spheres loaded with siRNA shrink ovarian cancer tumors in preclinical trial

... use to silence genes, shutting down production of harmful proteins," Sood says. "It works well in the lab, but the question has been how to get it into tumors." Short pieces of RNA don't make it to a tumor without being injected directly, and injection methods used in the lab are not practical for clinica...

Gold nanoparticles could improve antisense cancer drugs

...ntisense drugs, which prevent genes from producing harmful proteins such as those that cause cancer, have the...erial itself before it is ever made into copies of harmful proteins. One way to target the genetic material is to block the messenger RNA by using 'antisense D...

Cells use mix-and-match approach to tailor regulation of genes

...ranscription factors as a way to short-circuit the harmful effects of diseases, and researchers at the University of California, San Diego on June 16 reported new findings that could aid that effort. Bioengineering researchers at UCSD and two research institutes in Germany report in the June 16 issue of PLo...

EGF receptor activation prevents microbes from going more than skin deep

...skin that can prevent microbial growth and related harmful skin infections. ...

Quitting smoking improves lung function considerably

...trates that there is a reversible component to the harmful effects of smoking on the airways in asthma." "The degree of improvement noted for smoking cessation far exceeds that of high-dose anti-inflammatory treatment, such as oral prednisolone, 40 mg daily for 2 weeks, which had no effect on lung functio...

HIV-1's high virulence might be an accident of evolution

...alation of immune activation to levels that may be harmful to the host," the researchers said. The results also raise the possibility that treatments that could carefully limit the immune system in infected humans--mimicking the tight balance maintained in the other primates--might offer a new approach to H...

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