Tag: "toxins" at biology news
Decoy molecule that fights food poisoning might help defeat other toxins
...ses to spread from cell to cell in the body. Staph toxins
are bacterial "superantigens" that overstimulate t...the toxin from attaching to cells, Gupta said. The toxins
eventually die if they are unable to infect any other cells. The decoys are not expected to upset th...
New reserach shows promise in conquering ulcer-causing H. pylori
... Spleen cells normally help the blood filter toxins
and foreign invaders from the body. The researchers wanted to assess the effect of the spleen cells in the infected, immune-deficient mice. Immune-deficient mice lack ma...
Ill winds carry toxic dust
...were applied 20 years ago can still be there." The toxins
adhere to the soil particles and are carried on th...n dust and other pollutants, including arsenic and toxins
from burning fossil fuel, into air currents headed across the Pacific Ocean. This year, one massive ...
Scientists find genetic basis of insect's resistance to engineered crops
...apidly develop resistance to naturally produced Bt toxins
as well as the transgenic Bt toxins, leaving farmers without a reliable organic pest-control agent. To address these concerns, the Environmental Protection Agency requires that cotton farmers plant at least 4 percent of their fields with non-modifie...
UCSD biologists identify genetic mechanism conferring resistance to 'Bt toxins'
...used biologically produced insecticidecrystalline toxins
from the bacterium Bacillus thuringiensis, or Bt....ol caterpillars and beetles. But as the use of Bt toxins
expands worldwide, scientists fear their long-term effectiveness will be threatened by the developm...
The biological and toxin weapons convention an analysis
...as weapons, these include: the production of venom toxins
in genetically modified bacteria, creating antibiotic resistant superbugs, producing microbes that can not be detected using current diagnostic tests. The authors recognise the importance of an international prohibition regime, which they believe cou...
Forestalling pesticide, antibiotic resistance possible, theory predicts
...ue for the development of negative cross-resistant toxins
and their use in field applications." The researchers say their model shows that using negative cross-resistant biocides could delay resistance for decades, or even more than 100 years in some situations. "Although negative cross-resistance is not 't...
Dust from Africa leads to large toxic algae blooms in Gulf of Mexico, study finds
...f can experience respiratory problems by breathing toxins
from K. brevis that get in the air. Also, eating shellfish poisoned by red tides can lead to paralysis and memory problems. Around the Gulf of Mexico, scientists and others have recorded fish kills totaling in the millions and manatee deaths in the h...
Researchers explore wood smoke's threat to Great Lakes environment
...olychlorinated biphenyls (PCBs), mercury and other toxins
regulated by the federal government. This is believed to be the first study to explore the potential toxicity of the areas recreational smoke. Rebecca J. Sheesley, a graduate student at the University of Wisconsin-Madison and a contributing researche...
Terrorist threats to agriculture studied
...r supply. Bioterrorism, the deliberate release of toxins
or infectious organisms, has been studied by national experts for years. The threat to the U.S. food supply and its underlying agricultural industry has more recently been recognized, heightened by the attacks on Sept. 11. "The efforts in bioterrori...
Plants, insects play cat and mouse game
... and behaviour by releasing specific chemicals and toxins
to defend itself against the particular insect. Insects, in turn, adjust their phenotype - how they look and behave - and their physiological state by adapting the enzymes in their stomach to better digest the plant. This flexible cat-and-mouse strat...
Fred Hutchinson Cancer Research Center, University of Washington join in national effort to study health impact of toxic substances
...nes that influence susceptibility to environmental toxins
that cause breast cancer. Relatively few women diagnosed with breast cancer - between 5 percent and 10 percent - carry BRCA1 and BRCA2, the so-called "breast-cancer genes" that have been linked to an inherited form of the disease. However, up to half...
Duke forum to address medical aspects of terrorism
...tious Diseases; Medical aspects of chemical toxins
used in terrorism Dr. Woodhall "Sandy" Stopford, assistant clinical professor, community and occupational medicine, Department of Community and Family Medicine; Medical aspects of radiation in terrorism Randy Jirtle, professor, Department of...
After hooking toxin behind seafood poisoning, Science researchers may tackle prevention
...s latch on and impact the nervous system. Even the toxins
themselves, supplied by synthesis, can be quite us...o-algae. The dinoflagellates do not always produce toxins
in the wild, and of those that do, some stop production once cultured. Humans acquire the neurotoxin...
NIAID takes next genome step
...ructural proteins compose the framework of a cell, toxins
attack and damage a person's cells, and enzymes direct the hundreds of different chemical reactions a microbe requires for survival. The power of the genome is that it contains a complete, coded list of all the proteins a pathogen makes. Researcher...
Early detection device for exposure to chemical warfare agents being developed
...oling their knowledge about central nervous system toxins
and the electromyogram, or EMG, that records the electrical activity of muscles, to develop an early detection device that may one day be worn by soldiers and rescue workers at risk; it may have applications as well for crop dusters, farmers and othe...
Baxter's HomeChoice Pediatric dialysis system receives market clearance from FDA
...e bodys natural filter for cleaning out wastes and toxins
from the bodya function that is performed by healt...the catheter to the peritoneal cavity. Wastes and toxins
pass from the bloodstream across the peritoneal membrane into the dialysis solution. Then, HomeChoi...
Brain damage from HIV, Alzheimer's, may have similar mechanism, SFVAMC researchers say
... believe that the brain is damaged by inflammatory toxins
that are released as part of the brains immune response. The amyloid plaques of Alzheimers are also believed to cause a toxic inflammatory response, Pulliam said. Certain anti-inflammatory drugs may be able to reduce the damage from these toxins, ac...
UMass study uses microbes to turn mud into electricity
...especially in developing technologies to recognize toxins
and organic contaminants. Lovley cites, for examp...pment that could alert soldiers to the presence of toxins
or biological warfare agents in the immediate environment....
Third piece completes deadly puzzle: Structure of anthrax toxin offers clues to treatment
...sional structure of edema factor, one of the three toxins
that make anthrax so deadly. This finding, publis...tibiotics can kill the bacteria, anthrax produces toxins
that can cause death even after the bacteria have been eradicated. Since some forms of anthrax inf...
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