619 Articles with the topic: Microbiology & Virology
New Biosensor Detects Extremely Low Bacteria Concentrations Quickly, Easily And Reliably
sea-maid submitted, created time 1 year 1 month (www.sciencedaily.com)
Bacterial diseases are usually detected by first enriching samples, then separating, identifying, and counting the bacteria. This type of procedure usually takes at least two days after arrival of the sample in the laboratory. Tests that work faster, in the field, and without complex sample preparation, whilst being precise and error-free, are thus high on the wish list. A Spanish research team headed by Jordi Riu and F. Xavier Rius at the University Rovira i Virgili in Tarragona has now developed a new technique to make this wish come true. 
Ancient Microorganisms Helped Build 3.4-billion-year-old Stromatolite Rock Structures
sea-maid submitted, created time 1 year 1 month (www.sciencedaily.com)
Stromatolites are dome- or column-like sedimentary rock structures that are formed in shallow water, layer by layer, over long periods of geologic time. Now, researchers from the California Institute of Technology (Caltech) and the Jet Propulsion Laboratory (JPL) have provided evidence that some of the most ancient stromatolites on our planet were built with the help of communities of equally ancient microorganisms, a finding that "adds unexpected depth to our understanding of the earliest record of life on Earth," notes JPL astrobiologist Abigail Allwood, a visitor in geology at Caltech.
Pandemic flu viruses brew for years before going global
sea-maid submitted, created time 1 year 1 month (www.nature.com)
Monitoring more viral genes could provide early warning of dangerous outbreaks.
Pests could overcome GM cotton toxins
sea-maid submitted, created time 1 year 2 months (www.nature.com)
Laboratory studies suggest that it may be possible for insects to overcome two disparate toxins produced by genetically modified cotton. The results strike a cautionary note at a time when developers are racing to create crops that produce many different pesticides.
Virus-gene Therapy Combination Against Melanoma Under Testing
sea-maid submitted, created time 1 year 2 months (www.sciencedaily.com)
Researchers at the Moores UCSD Cancer Center are injecting a modified herpes virus into melanoma tumors, hoping to kill the cancer cells while also bolstering the body's immune defenses against the disease.
Swine flu reaches into the lungs and gut
sea-maid submitted, created time 1 year 2 months (www.nature.com)
The swine flu virus can reach deep into the respiratory system and even as far as the intestines — findings which could explain why the disease's symptoms are different from those of seasonal flu.
Newly Discovered Interferon Response May Offer Early Control Of H5N1 Influenza Virus
sea-maid submitted, created time 1 year 2 months (www.sciencedaily.com)
Researchers from Georgia suggest that the cell-signaling protein, interferon type 1, reduced H5N1 influenza virus replication in mice and may offer some degree of protection in the early stages of infection.
Origins of the swine flu virus
sea-maid submitted, created time 1 year 2 months (www.sciencenews.org)
Researchers use evolutionary history to trace the early days of the pandemic
US ramps up swine flu protection
sea-maid submitted, created time 1 year 3 months (www.nature.com)
The United States has awarded a US$90-million contract to biotech company MedImmune to produce a new live attenuated virus vaccine against influenza A (H1N1) swine flu. The 1 June announcement follows the placing of almost $1 billion in vaccine-supply contracts to pharmaceutical companies a fortnight ago.
Yeast missing sex genes undergo unexpected sexual reproduction
piggy submitted, created time 1 year 3 months (www.eurekalert.org)
An emerging form of the pathogenic yeast Candida is able to complete a full sexual cycle in a test tube, even though it's missing the genes for reproduction. And it may also do so while infecting us, according to Duke University Medical Center researchers.
"Sex contributes to the Candida yeast species' evolutionary success," said Joseph Heitman, M.D., Ph.D., director of the Center for Microbial Pathogenesis in the Duke Department of Molecular Genetics and Microbiology and co-author of two papers that tell the story in Nature and Current Biology
TB Vaccine Gets Its Groove Back
sea-maid submitted, created time 1 year 3 months (www.sciencedaily.com)
A team of Vanderbilt University Medical Center investigators has cracked one of clinical medicine's enduring mysteries – what happened to the tuberculosis vaccine. The once-effective vaccine no longer prevents the bacterial lung infection that kills more than 1.7 million people worldwide each year.
Old seasonal flu antibodies target swine flu virus
sea-maid submitted, created time 1 year 3 months (www.nature.com)
Lab results could explain why young patients are hardest hit by current H1N1 strain.
Designer Antibodies Derail Monkey AIDS Virus
sea-maid submitted, created time 1 year 3 months (sciencenow.sciencemag.org)
Researchers are reporting that a new antiviral strategy powerfully protects monkeys from SIV, the simian cousin of HIV. The approach combines elements of vaccines and gene therapy, and experts say the development could eventually lead to a vaccinelike weapon against AIDS--a goal that has thus far proved elusive.
New Therapies Mean HIV Patients Gain Longer Lives, Face New Challenges
sea-maid submitted, created time 1 year 3 months (www.sciencedaily.com)
New HIV therapies have prolonged lives and improved health for patients with HIV, but the treatments have also brought the longer-term effects of the disease into sharper focus.
Veterinarians at high risk for viral, bacterial infections from animals
sea-maid submitted, created time 1 year 3 months (www.eurekalert.org)
The recent H1N1 influenza epidemic has raised many questions about how animal viruses move to human populations. One potential route is through veterinarians, who, according to a new report by University of Iowa College of Public Health researchers, are at markedly increased risk of infection with zoonotic pathogens -- the viruses and bacteria that can infect both animals and humans.
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