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Tag: "killing" at biology news

New discovery: If it weren't for this enzyme, decomposing pesticide would take millennia

...n residues of a common powerful pesticide used for killing worms on potatoes, researchers have found. That may be expensive for farmers but lucky for the environment because University of North Carolina at Chapel Hill scientists have now discovered that if that particular enzyme weren't there, it would take...

Once-dreaded leprosy 'replaced' by tuberculosis, say researchers

...osis, a far more deadly disease, overtook leprosy, killing millions throughout Europe. Their conclusion is based upon the examination of DNA from human remains from the ancient and medieval periods in Israel and Europe. In these examinations, the scientists found traces of both leprosy and tuberculosis bact...

Biotech cotton 8: Bugs 0

...sts are not so much of a problem because we're not killing their natural enemies with insecticides." Dennehy added, "These soft toxins plus the good bugs acting together have driven pesticide use to historic low levels ... this is a wonderful success of integrated pest management." Since widespread adoptio...

New genetic test can detect clam disease

...n have a significant impact on a local economy by killing clams and devastating shellfish harvests and comme...n Provincetown, MA and spread to nearby clam beds, killing nine of ten clams in many of the beds. The disease spreads from clam to clam, infecting the clam by ...

University of Delaware researchers develop cancer 'nanobomb'

...omb holds great promise as a therapeutic agent for killing cancer cells, with particular emphasis on breast cancer cells, because its shockwave kills the cancerous cells as well as the biological pathways that carry instructions to generate additional cancerous cells and the small veins that nourish the dise...

NIAID researchers show how promising TB drug works

...y by searching for M. tb mutants that resisted the killing power of PA-824. The team confirmed previous research suggesting that resistance usually occurs when M. tb lacks components called FGD1 and F420, neither of which interacts directly with the drug. Next, the investigators screened for PA-824-resistan...

Why Christmas trees are not extinct

...ut also prevent air from entering the conduits and killing trees. The Structure of Water Valves in Trees Sperry says the range of conduit diameters vary but overlap for conifers and flowering trees. The conduits or tracheids in conifers range from 10 to 50 microns (millionths of a meter) in diameter, whi...

Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer

...peptide on the ironoxide particle was effective at killing cancer cells, suggesting that the cell-killing pep...de-Hecate combination worked best in targeting and killing breast cancer cells, including metastatic cells. According to Leuschner, the approach using nanopa...

Scientists observe how a close bond activates the immune system

...pies of itself. These T cell clones are capable of killing invaders outright and marshaling other cells to destroy them. In the new study, Gabriele Campi, a graduate student in Dr. Dustin's laboratory, and Kaspar Mossman, a graduate student of Dr. Groves's, created a synthetic dendritic cell using purifie...

New possibilities for flu antiviral and vaccine research emerge from 'Spanish flu' virus

...ethal. The 1918 Spanish flu was a global disaster, killing an estimated 20 to 50 million people, many of them otherwise healthy adults. By partially reconstructing the Spanish flu virus, researchers have now discovered at least part of what made the virus so lethal, thus providing essential information for i...

Wild birds help to create human flu vaccine

...s, collected in the midst of an outbreak in August killing wild ducks, geese and swans in northern Mongolia have unique genetic characteristics which make them a valuable addition to a human vaccine based on a variety of strains of influenza. Working in Mongolia for a health survey of wild bird populat...

UCLA scientists discover immune response to HIV differs, even in identical twins

...nd other antigens to receptors on their surface, killing the invader. HIV escapes this action by changing shape so that it does not fit into those receptors. "These boys are as similar as two humans can be, yet we see differences in how they fight the virus," said Dr. Paul Krogstad, professor of pediatri...

Preclinical study of a new brain tumor therapy

...ategy to treat tumors by selectively targeting and killing the malignant cells. A new preclinical study, publ...g very quickly before symptoms are experienced and killing most patients within a year of diagnosis. Working in mice, Alexander Levitzki and colleagues (of T...

Plants give pests sock in the gut

...he insects' ability to digest food, and ultimately killing them, according to researchers. The enzyme could be used in tandem with other biological pesticides such as the Bt toxin to prevent the pests from developing resistance and making the toxin more effective. "The enzyme is found in insect-resistant st...

Newly identified mechanism helps explain why people of African descent are more vulnerable to TB

... new and potentially important human mechanism for killing intracellular pathogens," said Philip Liu, postdoctoral scholar in the Department of Immunology and Molecular Genetics at the David Geffen School of Medicine at UCLA and co-lead author of the paper. African Americans have significantly lower levels...

Genetic study shows humans have pushed orangutans to the brink of extinction

...tation development and forest destruction. Illegal killing also contributes to this decline." Sixty percent of orangutans found in Sabah are living outside the network of protected areas. "The largest population of the East Bornean orangutan subspecies existing on Earth occurs in the forests of the Sabah ...

Invasive species harms native hardwoods by killing soil fungus

...allies of its main competitors," Stinson says. "By killing off native soil fungi, the appearance of this weed in an intact forest could stifle the next generation of dominant canopy trees. It could also invite other native and nonnative weedy plants that currently grow in low-AMF habitats, such as those dist...

Driver of anthrax toxicity could lead to late-stage therapy

... method to prevent the toxin from infiltrating and killing cells. "Our discovery of the role of LRP6 in anth...of LRP6 can protect cells grown in culture against killing by anthrax toxin suggest that the immunological targeting of LRP6 may prove useful in protecting aga...

GlycoFi announces the first production of antibodies with human glycosylation in yeast

...wed significantly increased antibody mediated cell killing compared to Rituxan®. "By controlling the sugar structures on antibodies we have shown that the antibodies ability to kill cancer cells can be significantly improved and that therapeutic proteins can be optimized by controlling their sugar structure...

Experimental TB drug effective against resistant and latent mycobacterium tuberculosis

... working to bring the drug to market. The potent killing activity of FAS20013 is directed specifically agai... to FAS20013 in clinical isolates,. The short-term killing power of FAS20013 is greater than currently used drugs; for example, FAS20013 will kill more organis...

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