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Tag: "thwart" at biology news

Spider Venom Could Yield Eco-Friendly Insecticides

...King's spider-venom cocktails could be designed to thwart the resistance of specific insect pests by locking on to novel molecular targets in the insect nervous system. Because the insects have never encountered chemicals that behave like spider toxins, they will most likely lack resistance to bioinsecticid...

Studies reveal methods viruses use to sidestep immune system

...r sheds light on the mechanisms used by viruses to thwart a host's immune defenses and may aid in the development of more effective drugs to fight hepatitis C and West Nile viruses, as well as the flu and the common cold. In a study to appear in a March issue of the Journal of Virology and currently availa...

UCSD discovery may help extend life of natural pesticide

...can work through more than one receptor type could thwart the development of resistance. "This paper presents an intriguing question," said Griffitts. "In light of findings by insect biologists that certain proteins function as important Bt toxin receptors in some cases, how might glycolipid and protein re...

To control germs, scientists deploy tiny agents provocateurs

Aiming to thwart persistent bacterial infections and better control group behaviors of certain microorganisms, scientists are creating artificial chemicals that infiltrate and sabotage bacterial "mobs." Reporting the work here today (March 13) at the 229th national ...

Turning viruses into allies against cancer

...lex virus, built with a potent immune stimulant to thwart the spread of cancer cells, is being tested in patients with a variety of tumor types, including melanoma, breast, head and neck, and colorectal cancer. In early clinical studies, the engineered virus -- developed by Biovex Ltd. under the trade name...

Gladstone investigators discover how resting T cells avoid HIV infection

...s some CD4 T cells -- the main target of HIV -- to thwart the virus. The discovery, reported on April 13 in the online version of Nature, could open the door to an entirely new strategy for preventing the spread of HIV infection in the body's cells, according to the senior author of the study, Gladstone Ins...

USC researchers determine mechanism of action of chemotherapy drug

...rin, manufactured by Pharmacyclics, Inc.) works to thwart cancer cells by disrupting key enzymes involved in cellular metabolism, according to a team of researchers led by Joseph Hacia, Ph.D., assistant professor of biochemistry and molecular biology at the Keck School of Medicine of the University of South...

Say what? Bacterial conversation stoppers

...ra might interfere with cell-cell communication to thwart bacterial invaders." Using a chemical communication process called quorum sensing, bacteria converse among themselves to count their numbers and to get the population to act in unison. A synchronized group of bacteria can mimic the power of a multi...

Researchers uncover E. coli's defense mechanism

... mechanism with which disease-causing bacteria may thwart the body's natural defense responses. The findings, which could ultimately lead to the development of more effective antibiotics, appear in the September 29, 2005 issue of the journal Nature. "Nitric oxide is produced by the body to fight infections...

UIC developing drug for SARS

...at digest proteins, have been successfully used to thwart the human immunodeficiency virus, which causes AIDS. "Data from SARS patients indicate that replication of the virus peaks 10 days after the onset of fever," said Michael Johnson, director of the Center for Pharmaceutical Biotechnology in the UIC Co...

Techniques available to detect soil that inhibits destructive soybean pest

...arch focuses on soybean cyst nematodes and ways to thwart them, said that using nematode-suppressive soils is an easily implemented, environmentally friendly weapon in fighting the parasites, which are found worldwide in soybean-producing areas. "Using plants bred to resist pests is not the complete answer...

Wisconsin scientists discover a master key to microbes' pathogenic lifestyles

...nts and might even help underpin a vaccine able to thwart infection entirely, according to Klein. "This could lead to therapeutics, better treatment for this class of diseases," Klein explains. "And with this finding, vaccines might now be possible. That's a strategy with promise." The discovery of a mast...

Invasive species harms native hardwoods by killing soil fungus

...esearchers suspected that the invasive plant might thwart this symbiotic relationship. To test this possibility, they collected soil from five forests in Ontario dominated by four species of native hardwoods. First, the researchers tested seedlings' ability to form mycorrhizal relationships in soil with a...

How sperm crack the whip

... male infertility and design new contraceptives to thwart sperm entry into the egg. What's more, they said, the exquisitely delicate analytical technique they used to eavesdrop on the electrical currents inside the squirming sperm cell could literally open a new window into its largely mysterious inner wor...

Unique dual target specificity of kinase inhibitor key for success against cancer

...thways involved in malignant transformation and to thwart to the ability of cancer cells to adapt to stress. Lipid kinases belonging to the PI3 kinase family, made up of different isoforms, promote cell growth and survival. Aberrant regulation and activation of PI3 kinases has been implicated in several h...

Nice guys do finish first in lizards' evolutionary race

...n't family. The tag-team approach does effectively thwart the orange-throat bullies, albeit at a personal cost. The term "greenbeard" refers to an evolutionary term of a trait so obvious that others can recognize The greenbeard in this case, McAdam said, is more than just a blue throat. The mechanism of se...

Inflammation markers identify fatigue in breast cancer survivors

...egies that decrease this inflammatory response and thwart the fatigue that these patients endure." One component of the marker, Dr. Irwin explained, is a measure of the amount of interleukin-6 receptor (IL-6R) free-floating in the blood of breast cancer survivors compared to the amount of that receptor rem...

Scientists find a key to immune system's ability to remember

...ks -- how it acts at the finest level of detail to thwart the pathogens that invade our bodies -- is not well understood. Now, however, an international team of scientists has ferreted out an important clue to how the key cells of the immune system are able to remember old foes and quickly mount a response ...

Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack

... workers and close contacts would be sufficient to thwart an epidemic, according to lead author Ira M. Longi...pox cases and vaccinate their close contacts could thwart the containment of an epidemic. These findings emerge from a committee of smallpox experts ?includ...

Statin plus cancer drug deliver combo punch to brain cancer cells

...causing B-cell lymphomas," he says. "Cancer cells thwart suicide by overproducing Bcl-2, assuring them a long life." When the Hopkins researchers noticed that Bcl-2 and hedgehog expression increased in tandem in medulloblastoma cells, they tried adding hedgehog-blocking cyclopamine to the cells and found...

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