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Tag: "bug" at biology news

First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers

...eam noticed that the Streptomyces bacterium -- the bug that gives us the antibiotic streptomycin -- also produces a natural compound called migrastatin, which appears to inhibit cell migration. Natural migrastatin's effect is relatively weak, but Dr. Huang suspected the molecule might be manipulated int...

Alien woodwasp, threat to US pine trees, found in N.Y.

...t would be loblolly pines in Georgia. Finding one bug in a trap is no small matter. Where there's one, there's likely to be more, says E. Richard Hoebeke, a Cornell senior extension associate in entomology. "Whenever you find an insect in a trap, it probably is established." Hoebeke was sifting through...

Life detection instrument passes key test on road to Mars

... In a place that hadn't seen a blade of grass or a bug for ages, and contending with dust and temperature extremes that left her either freezing or sweating, Skelley ran 340 tests that proved the instrument could unambiguously detect amino acids, the building blocks of proteins. More importantly, she and...

Immune system's distress signal tells bacteria when to strike back

...ese could signal the bug," said Alverdy, "then the bug strikes back and then the inflammation process snowballs." Because the bacteria in this case are "normal flora," people with no real infection develop a chronic disease. The battles between pathogens and their hosts have been going on for millions o...

Two studies document rise of superbugs in the environment

...ee of them--including Escherichia coli, a familiar bug that can cause urinary tract infections--were involved in the upswing. The spread of multidrug resistance in bacteria appears to have two main causes, according to Aurora Pop-Vicas, MD, lead author of the Massachusetts study. The first is the intrin...

Bacteria are key to 'green' plastics, drugs

Engineered bug makes key chemical precursor from grain sorghum T...es succinate as it's only metabolic byproduct. The bug contains more than a half-dozen genetic modifications. It was created over the past four years by th...

A radical solution for environmental pollution

...ut the first step is understanding exactly how the bug breaks down toluene. "The challenge is that the chemical reactions these bacteria use are very unusual---not the standard chemical reactions that chemists usually think about," said Marsh. "It turns out that the solution to metabolizing these very i...

North & South American researchers find architectural abnormalities in T. cruzi ribosome

... which is transmitted to humans by a blood-sucking bug usually found in poor areas with substandard housing. An estimated 16 to 18 million people in Latin America are infected, and another 100 million are at risk. Some cases have spread through blood transfusion. Screening blood for the disease is mandat...

Penicillin, amoxicillin: Step aside for strep throat treatment

...mmon medications used to treat the strep germ, the bug that causes millions of sore throats in U.S. child...ihood that a less powerful medication can kill the bug just as well as a more powerful drug. In the case of throat infections, doctors try to preserve thei...

Gene increases risk of tuberculosis

...ually. But not all people who are exposed to this bug become ill -- a phenomenon largely explained by genetic differences that make some individuals more prone to developing disease than others. Indeed, a recent scientific study found that a particular region on the human chromosome 17 was associated w...

Poison + water = hydrogen. New microbial genome shows how

...rapidly on carbon monoxide than other species: The bug boasts at least five different forms of a protein machine, dubbed carbon monoxide deyhydrogenase, that is able to manipulate the poisonous gas. Each form of the machine appears to allow the organism to use carbon monoxide in a different way. Most o...

Scientist uses dragonflies to better understand flight

...two and an unusual pitching stroke that allows the bug to hover and even shift into reverse, the slender, elegant insect is a marvel of engineering. Z. Jane Wang, professor of theoretical and applied mechanics at Cornell University, presented her research on flying systems and fluid dynamics today (Feb....

Flu not the only germ threat this time of year

...en though flu gets all the press, RSV is a stealth bug worthy of attention too. Ann Falsey, M.D., and Ed...s die annually from an RSV infection, and that the bug is responsible for more than 177,500 hospitalizations of adults each year. In addition, pediatrician...

Outsmarting the smartie bug

...systems ?like a Smartie changing its colour. "The bug has a polysaccharide coat which can take any one of 90 different forms, known as serotypes," said Stephen Bentley, leader of the project at the Wellcome Trust Sanger Institute. "The coat is essential for its ability to cause disease and its interacti...

U-M researchers take new approach to defeating Gram-negative bugs

... on the outside of the cell. "Unfortunately, the bug didn't die," Woodard said. The researchers found t...y smart," Woodard said. "It's not a matter of if a bug will become antibiotic resistant, but when. We have to work hard to get ahead of them." ...

Mosquito spray increases toxicity of pyrethroids in creek, study finds

...rket in California, ranging from cans of household bug killer to commercial pest control sprays. Prior studies by Weston and colleagues have shown that pyrethroids exist in agricultural and urban streams at levels toxic to sensitive aquatic life. General urban pesticide use, such as applying insecticid...

Methane-belching bugs inspire a new theory of the origin of life on Earth

... of the earliest true microbes. "We know that this bug is very ancient indeed," Ferry told the Penn State Astrobiology Research Center's annual meeting earlier this week. "There is strong phylogenetic evidence that acetate kinase is a very ancient enzyme." No such evidence can pinpoint the age of Pta, "b...

Biotech cotton provides same yield with fewer pesticides

...y (Bemisia tabaci) and the western tarnished plant bug (Lygus hesperus), growers use broad-spectrum insecticides and other types of insecticides known as insect growth regulators. Carrière and his colleagues studied how Arizona farmers actually planted their crops and applied pesticides. The research...

Pesticides need sunscreen to beat the heat

...t the heat in crop protection. This means that the bug sprays last longer, as they are protected from the strong rays of sunshine, reports Chemistry & Industry, the magazine of the SCI. This is becoming increasingly important as temperatures rise, with the Met Office announcing that several heat reco...

The biggest bug in gut discomfort

... just starting to answer basic questions about the bug that is the leading cause of bacterial food-borne ... large size suggested to Watson and Galan that the bug had evolved a special mechanism to induce its uptake into these nonphagocytic cells and establish it...

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