Caterpillars tell us how bacteria cause disease
...afer method for researchers working with dangerous strains of bacteria as they are working with fragments rather than the whole bacteria." The next stage of Dr Waterfield's work will involve working with other research teams across the UK to screen other harmful bacteria using RVA in an attempt to identify...Longer-lived rodents have lower levels of thyroid hormone
...etabolism and warm the body, he explained. "Mice strains that exhibit extended longevity tend to have lower thyroid hormone concentrations than shorter living strains," the authors wrote. "Significant declines in thyroid hormone correlate well with enhanced maximum lifespan." The study compared the level...Study reveals mechanism for cancer-drug resistance
...ubulin. Further studies will focus on the other strains of mutant worms to determine whether the anti-cancer drugs that attack tubulin use mechanisms similar to hemiasterlin. These types of studies can reveal how a drug works, perhaps picking up side effects before it becomes used widely, Dr. Roth said....Scientists discover toxin that causes gastro disease
... food poisoning. The toxin, produced by certain strains of E. coli bacteria, has been found to be responsible for an outbreak of haemolytic uraemic syndrome, a dangerous disease that causes acute kidney failure, in South Australia in 1998. The research team was led by Dr Adrienne Paton from the Univers...Discovery of the first resistance gene to rice yellow mottle virus
...possible to carry out laboratory selection of RYMV strains that break the gene's resistance and that the process involved was determined by mutations in one of the viral proteins. The two approaches are now being combined in order to determine the molecular mechanisms of resistance or susceptibility on the b...... related to their life cycle. Sexually-reproducing strains are more pollution sensitive than hermaphroditic strains. This in turn has a negative effect on the population growth rate. Alda Alvarez also observed that following the pollution, the toxicity of the nematodes does not increase but is variable. G...'Protecting virus' offers instant flu protection and converts flu infections into their own vaccines
... has been shown to protect animals against various strains of flu, and could offer protection against the ful...s, including H5N1 and any new pandemic or epidemic strains infecting humans. The 'protecting virus' provides instant protection, and completely prevents flu sy...'Failed' experiment yields a biocontrol agent that doesn't trigger antibiotic resistance
...osed to harmful agents like antibiotics, resistant strains emerge. Nothing with the killer plasmid survived." The next step was to engineer a strain of bacteria that could suppress over-replication of the key plasmid. This so-called "Trojan horse" could then be used to spread the killer plasmid via conjug...UGA researchers discover cell-wall carbohydrate that is crucial to anthrax bacterium
...nthrax are enormous. There are more than 100 known strains of B. anthracis, and one of the most virulent is c...the research team examined four Bacillus anthracis strains Ames, Pasteur, Sterne and UT60 and compared them to two related strains of Bacillus cereus, a soil...Solved: The mystery of flesh-eating bacteria's relentless attack
...ure," said Hanski. This may be one reason why some strains are less virulent than others; they might make mor...to study the amount of SilCR produced by the other strains and to determine their degree of tissue invasiveness." said Hanski. The link between SilCR and a h...Fire ant-attacking fly spreading rapidly in Texas
... sites. In addition to Brazilian and Argentinean strains of P. tricuspis, two other phorid species were introduced since 2004, and Gilbert says the smallest one, P. curvatus, is also on the march. Gilbert says these initial successes should be seen as "getting to first base" in the attempt to control re...... when it comes to human faces, Winkielman said, it strains credulity when applied to inanimate objects or animals of a different species, which we are presumably not assessing for reproductive purposes. So Winkielman, with colleagues from the University of Otago, New Zealand, and the University of Denver,...A new understanding of how cells defend themselves against bacterial pore-forming toxins
...try to develop drugs to fight antibiotic-resistant strains of bacteria that use these toxins as part of their hijacking strategy....A wolf in sheep's clothing: Plague bacteria reveal one of their virulence tricks
...s then injected mice with the wild-type and mutant strains of Yersinia. All the mice infected with the wild-type bacteria died within nine days of exposure. But the group that received the YpkA mutant had an 80 percent survival rate, showing that Prehna's mutation drastically lowered Yersinia's harmful effec...The sweet science: Viruses switch grip to gain upper hand
...less MVMp and three potentially dangerous, mutant strains of MVMp. Scientists found MVMp proteins stuck to the same three glycans on the plate. However, one of the mutant MVMp viruses also bound to an additional glycan - one associated with the more dangerous MVMi strain. "A single amino-acid change in...Aussie team makes landmark insulin discovery
... Relenza TM , the world's first drug to combat all strains of flu. Dr Graeme Woodrow, the Chief of CSIRO Molecular and Health Technologies says: "This team has been at the forefront of research on the structural biology of the insulin receptor family for a long time and with their collaborators at the Ludwig...Replacing insulin is top-ranked breakthrough foreseen for health in developing world
... a person's ability to fight off infection and new strains of HIV/AIDS, tuberculosis, hepatitis, malaria and other common diseases. The full Top 10 list is appended. About the study Some 44 international experts and clinicians from relevant fields three quarters of them from developing countries were ...Promising preclinical results with live attenuated H5N1 vaccines
...an H and N from artificially weakened (attenuated) strains of influenza. These were combined with H and N pro... viruses from which they were derived, the vaccine strains did not cause death when injected into the bloodstream of chickens, and did not even cause persisten...Study illuminates how the plague bacteria causes disease
...e arisen from the evolution of multidrug-resistant strains of the plague bacterium found in patients from several locations. The plague bacterium Yersinia pestis is closely related to Y. enterocolitica and Y. pseudotuberculosis, which are food-borne agents that cause inflammation of the stomach and intestin......he effectiveness of Koi herpesvirus in controlling strains of carp present in Australia and will examine whether the virus will have any impact on certain native fauna. "All testing will be done within the secure biocontainment facilities at CSIRO AAHL," Dr Crane says. Dr Crane says while carp are a valuabl...