Tag: "toxins" at biology news
Bt toxins found to kill parasitic roundworms
...ontrol caterpillars and beetles. "Not only are Bt toxins
relatively easy to make, but they are extremely sa...ts the first time scientists have verified that Bt toxins
can widely affect nematodes. "Our finding that there is a family of crystal proteins that can kill n...
Stanford research points to chance as cause of genetic diseases in Ashkenazi Jews
... with these disorders lack enzymes that break down toxins
into harmless compounds. Instead, the toxins
are stored in cellular compartments called lysosomes, where they can build up to high levels and eve...
With toxic crystals, bacterium targets - and takes out nematodes
...earchers examined the impact of seven different Bt toxins
upon six different nematode species, including one...ccording to the PNAS report, "The success of these toxins
is due in large part to their high toxicity towards insects but no/low toxicity toward other animals...
Could Bt transgenic crops have nutritionally favourable effects on insects?
...equired to confirm such nutritional effects of Cry toxins
on resistant insects....
Tiny cell-based chemical detectors have homeland security potential
...cause they can respond to a wide range of chemical toxins
rapidly. NIST's primary contributions to this project involve expertise in microfluidics technology, particularly aspects such as plastics processing. The new device has a novel configuration in which, through the use of lasers, tiny posts are constr...
Free-radical model too radical
...om thinking clearly to tissue repair or removal of toxins
from the blood. Oxygen free-radicals have an extra electron on their oxygen atom, which results in the molecule plucking hydrogen atoms from nearby molecules. However, in biological systems, oxygen free-radicals do their work in complex environments ...
Biological and chemical agents in terrorism examined at AAN Annual Meeting
...l present the historical perspective of biological toxins
used in warfare and global terrorism, from ancient...ntemporary times. He will focus on such biological toxins
as anthrax, smallpox, and botulinum toxin, their use in war and as terrorist weapons of mass destruc...
Fruit consumption related to increased risk of Parkinson's?
... that further research into the role of food borne toxins
may provide clarity as well as insight into the etiology and prevention of Parkinson's."...
UW researchers find second anthrax toxin receptor
...vated, the spores become bacteria and soon release toxins
consisting of three components. One toxic component, protective antigen (PA), must attach, or bind, to a receptor before the rest of the toxin can enter cells. Once attached, PA transports the other components - edema factor and lethal factor - into...
Cholestyramine shows protective effects for marine toxin poisoning
... businesses. HABs produce some of the most potent toxins
known to man. These toxins
are primarily neurotoxins, causing symptoms ranging from numbness and tingling sensations to memory ...
Alzheimer's protein jams mitochondria of affected cells; resulting 'energy crisis' kills neurons
...ns, resulting in an "energy crisis" and buildup of toxins
that causes cells to die. This pathway, the first specific biochemical explanation for pathologies associated with Alzheimer's, is detailed in the April 14 issue of the Journal of Cell Biology. While the normal function of the amyloid precursor prot...
Black water turns the tide on Florida coral
...cosystem was stressed by microscopic organisms and toxins
contained in the dark water. The "black water" event caused alarm among local fishermen, divers, and the public, as the color of the water was unusual and fish seemed to avoid this large area of dark water. Satellite instruments such as the Sea-view...
Small talk--The gabfest of microbial communication
...est starts, and this can lead to the production of toxins
that make us very, very sick. Microscopic organism...nks it is alone in the world, it won't produce the toxins
which make us sick, or, for that matter, make biofilms which lead to ship hull fouling" says ONR spo...
Anthrax: 'A soil bug gone bad'
...nsis a soil bacterium whose plasmids carry insect toxins
uncovered some clues indicating that a relatively recent ancestor of B. anthracis, which infects mammals, may have been an insect pathogen. In addition, researchers found a gene in the anthrax bacillus that is similar to one in the plague bacterium,...
Secrets of drug resistance in bacteria
... cells: the ability to expel a diverse flotilla of toxins
using one pump. In healthy people, these so-called multidrug efflux pumps play important roles. A complex called P-glycoprotein, for example, prevents the entry of toxic molecules across the mucosal surface of the intestinal tract, as well as the blo...
NIEHS, NTP director receives honorary doctorate
...ion of genetic tools to the study of environmental toxins
and by NIEHS researchers partnering to isolate the first breast cancer susceptibility genes, BRCA1 and BRCA2. Many women in breast cancer-prone families are now tested for these genes. In conferring the degree, University officials said, There ...
'Bacteria-eating' viruses may spread some infectious diseases
...teria-eating" virus causes disease by transferring toxins
and other disease-causing genes between bacteria. ... as toxigenic, meaning that these microbes produce toxins
-- transported by phage -- that cause disease. People can carry colonies of bacteria, such as strep,...
Lab, OSU join in new microproducts institute
... biological warfare agents and other environmental toxins
like E. coli, and heat-actuated air conditioning units no bigger than a shoebox that would use waste engine heat to cool automobiles. The institute should help spawn a new industry in the Pacific Northwest based on small, lightweight and more efficie...
Yeast, wormwood & bacterial genes combine in microbial factory to make antimalarial drug
...lls either stopped growing or mutated to avoid the toxins
-- so he stuck in a wormwood gene for an enzyme that converts them to amorphadiene, a chemical precursor of artemisinin that the cells can deal with. Artemisinin has been known to the Chinese for 2,000 years as an herbal medicine, qinghaosu. Though h...
UT Southwestern researchers find immune system stages for eliminating viral infections, cancer cells
... these cells regulate their ability to release the toxins
that kill their targets in very different ways was surprising and has now led us to the point where we can begin to define the molecules that specifically control that process."...
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