Tag: "toxins" at biology news
UPenn Cancer Center offers prosate cancer prevention trial using selenium & vitamin E
...itamin E are antioxidants, capable of neutralizing toxins
known as free radicals, that might otherwise damage the genetic material of cells and possibly lead to cancer. These two naturally occurring nutrients were chosen for study because of the inadvertent results of two other large cancer prevention trial...
Stanford researchers uncover possible approach to attack HIV-infected cells
...ion of infected CD4+ T cells could release harmful toxins
into the body, and further testing will be required to know for sure....
Tips from the Journals of the American Society for Microbiology: February 2002
.... This protein is a required component of anthrax toxins
and vaccines based on PA teach the body to recognize and neutralize the anthrax toxins, preventing the toxic effects of infection, but not preventing the infection itself. According to the researchers, the inclusion of formaldelhyde-inactivated anth...
NIAID unveils bioterrorism research agenda
...tant biochemical features of two different anthrax toxins
that have provided promising leads for new anthrax drugs. Over the past several years, NIAID scientists and grantees have made tremendous strides in understanding the complex physiology of the bacteria that cause anthrax and plague, for example. Th...
Study tracks health of rescue dogs, handlers involved in searches at World Trade Center and Pentagon
... "These dogs were exposed to huge amounts of known toxins
and unthinkable amounts of unknown ones," Otto said. Melissa Hunt, associate director of clinical training in Penns Department of Psychology, will lead the associated study of dog handlers. Patterns of depression or post-traumatic stress disorder am...
Researchers narrow search for structure of cholera toxins extracellular transport signal
... transmission," said Connell. "If you know how the toxins
are secreted, you can stop the disease." Techniques for determining protein function by causing mutations through sequential elimination of amino acids and portions of protein are used widely in microbiology, Connell noted. During initial studies...
Caterpillar saliva beats plant defenses
...e saliva of caterpillars and helps to suppress the toxins
that plants produce when chewed on by insects, according to a team of entomologists."The saliva of herbivorous insects has been overlooked as a factor in overcoming host defenses," the researchers report in today's issue of Nature. "Our results show ...
Gene mutation influences filtering of blood by kidneys
...ainers. Slit diaphragms allow water and dissolved toxins
like urea to leave the bloodstream while holding back protein molecules the body needs in the blood, says Miner. Much of the water is reabsorbed by the kidney and the rest, along with the urea, is collected and expelled as urine. The study showed th...
Mechanics of bacteriums toxin being unraveled
..., Wilson discovered that the Pasteurella multocida toxins
target is a protein known as Gq, which regulates a...t even as they die some bacteria still can release toxins
into the body. In many cases, just one toxin can enter a cell and alter its structure or kill it. ...
'Trojan horse' technology destroys blood supply to cancer tumors in mice
...t cause damage to normal blood vessels as do other toxins
that have been explored for use in anti-tumor therapies, Dr. Rosenblum said. Genetically engineered gelonin was developed in a research program at M. D. Anderson, and related intellectual property rights are owned by Research Development Foundation (...
Clemson researchers create biosensors to protect nation's food and water supplies
...o-alarm, when key and lock fit. Most pathogens and toxins
have a unique "lock," and by attaching the matching "key" on the surface of a luminescing nanoparticle, a nanosensor can be created. The sensor signal can be rapidly detected and be a first line of defense in identifying food or water that has been c...
New witchweed-fighting method, presented by CIMMYT and Weizmann Institute scientist
...nutrients and water, while poisoning the crop with toxins
and stunting its growth. Until now, other methods to control this parasitic weed have been long-term and often impractical and, hence, have not been widely adopted by farmers. African farmers commonly remove the witchweed by hand, but by the time it...
URI biological oceanographers study potentially toxic microalgae on the northeast coast
...or more strains of the species is known to produce toxins
affecting humans, the species in strongly implicated or proven to cause human illness or fatality, or the species has produced a positive reaction in mammalian toxicity tests. They also included species harmful to marine life if one or more strains a...
Surprising role for Staphs toxic shock toxin
...e Staph strains producing these potentially lethal toxins
generally produce few of the other proteins normal...e anticipated." "There are lots of bacterial toxins
around but none has been shown to regulate or repress genes in the bacterial cell," says Dr. Novick....
'Rock-paper-scissors' preserves biodiversity in bacterial neighborhoods
...st observed the dynamic. The strategy of producing toxins
to kill or slow the growth of a competitor is call...i and essentially every major bacterial group. The toxins
that one population of bacteria uses to poison others are exploited in medicine as antibiotics. "The...
Viruses help strep bacteria turn deadly
...searchers identified several that encode bacterial toxins
and enzymes that may contribute to the highly infe... nature of M3 GAS bacteria. Amazingly, one of the toxins
resembles an enzyme found in potent snake venoms. Those molecules may prove to be useful targets fo...
Guns, bats, and cash
...o the disorders. Earlier studies that showed the toxins
of the cycad plant caused neurological disorders. The Chamorros knew of the plant's toxicity as well. Although they ate part of the cycad in the form of flour in tortillas, the plants were washed repeatedly, and the amount of toxin they were expose...
Reversing the sounds of silence
...efenses, making the ear more resistant to noise or toxins
or infection," Dr. Kopke says. "And, we're also exploring strategies to regenerate the inner ear sensory hair cells and nerve endings. We've had some initial success at the basic science level, and we've had some success with rescuing the hearing o...
UW scientists find genetic pathway to potent anticancer agents
...elling bacteria that are responsible for producing toxins
that are among the most effective anticancer agent...g been intrigued by the potential of these natural toxins
produced by soil bacteria. But enediynes' complicated chemical structure (first elucidated in 1985) ...
Dipsticks for water testing, right whale future grim, marine law center established
...s to new testing methods that detect cyanobacteria toxins
more easily. New York Sea Grant scientist Gregory... has recently finished extensive testing for these toxins
in Lake Champlain, Lake Ontario and other freshwater sources. Current methods of detecting anatoxin...
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