Biology News Net
Bioinformatics

A potent combination of powerful new analysis methods and abundant data from genomics projects is carrying microbiology forward into a new era. Bacteria in particular are shedding light on fundamental molecular and signalling processes of interest not just within microbiology, but across the whole spectrum of life sciences embracing higher organisms, including plants and vertebrates. Medical research will benefit through improved knowledge of how bacteria behave when inside host organisms such as humans, both in benevolent symbiotic relationships and when causing infectious diseases such as TB.

Environment

Striped bass in the San Francisco Estuary are contaminated before birth with a toxic mix of pesticides, industrial chemicals and flame retardants that their mothers acquire from estuary waters and food sources and pass on to their eggs, say UC Davis researchers.

Health & Medicine

Findings from one of the largest cancer chemoprevention trials ever conducted have concluded that selenium and vitamin E taken alone or in combination for an average of five and a half years did not prevent prostate cancer, according to a team of researchers coordinated by the Southwest Oncology Group (SWOG) and led by scientists at The University of Texas M. D. Anderson Cancer Center and Cleveland Clinic.

Health & Medicine

Treating patients who have chronic hepatitis C and advanced liver disease with long-term pegylated interferon significantly decreased their liver enzymes, viral levels and liver inflammation, but the treatment did not slow or prevent the progression of serious liver disease, a study finds.

Molecular & Cell Biology

Researchers from the Ludwig Institute for Cancer Research at the University of California, San Diego School of Medicine have identified a key step required for cell division in a study that could help improve therapies to treat cancer. Their work describing the mechanism of the contractile ring – a structure that pinches the mother cell into two daughter cells – has been published in the December 5 issue of the journal Science.

Microbiology

A team of researchers from Penn State University and the University of Chicago has uncovered clues that may explain how and why a particular virus, called N4, injects an unusual substance -- an RNA polymerase protein -- into an E. coli bacterial cell. The results, which are published in the current issue of the journal Molecular Cell, contribute to improved understanding of the infection strategies used by viruses that attack bacterial cells. Such viruses are known as bacteriophages, or phages. The results also may help other researchers to come up with new ideas about ways to kill E. coli bacteria, which can be dangerous to humans.

Microbiology

Researchers from Purdue and Stony Brook universities have determined the precise atomic-scale structure of the poliovirus attached to key receptor molecules in human host cells and also have taken a vital snapshot of processes leading to infection.

Health & Medicine

Experts are recommending that a malaria vaccine progress to Phase 3 trials following the successful trial of the RTS, S/AS01E malaria vaccine among 5-17 month old children in Korogwe, Tanzania and coastal Kenya, which is reported today in the New England Journal of Medicine (NEJM).

Microbiology

An international team of biologists has discovered a new species of microsporidia, a single-celled parasite of animals, in a roundworm used in genetic laboratories around the world.

Health & Medicine

Rather than testing for individual marker genes or proteins, researchers at the University of California, San Diego (UC San Diego) and the Moores UCSD Cancer Center have evidence that groups, or networks, of interactive genes may be more reliable in determining the likelihood that a form of leukemia is fast-moving or slow-growing.

Health & Medicine

New data from The Kinsey Institute at Indiana University demonstrate that many women think condoms undermine sexual pleasure, but those who use both hormonal contraception and condoms report higher overall sexual satisfaction.




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