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Biology RSS FeedsHow one strain of MRSA becomes resistant to last-line antibiotic - Researchers have uncovered what makes one particular strain of methicillin-resistant Staphylococcus aureus (MRSA) so proficient at picking up resistance genes, such as the one that makes it resistant to vancomycin, the last line of defense for hospital-acquired infections. They report their findings in mBio®, the online open-access journal of the American Society for Microbiology, on Tuesday May 22. ...Feed Source: feeds.biologynews.net Researchers take virus-tracking software worldwide - Associate Professor Daniel Janies, Ph.D., an expert in computational genomics at the Wexner Medical Center at The Ohio State University, is working with software engineers at the Ohio Supercomputer Center A biomedical informatics researcher who tracks dangerous viruses as they spread around the globe has restructured his innovative tracking software to promote even wider use of the program around the world.
... New TB test promises to be cheap and fast - This microfluidic chip invented at UC Davis uses DNA, coated on the gold spots, to test for gamma interferon -- a test for latent TB infection. Biomedical engineers at UC Davis have developed a microfluidic chip to test for latent tuberculosis. They hope the test will be cheaper, faster and more reliable than current testing for the disease.
... Breast-fed babies' gut microbes contribute to healthy immune systems - A new multi-university study reports that differences in bacterial colonization of the infant gut in formula-fed and breast-fed babies lead to changes in the expression of genes involved in the infant's immune system.
... Zooming in on bacterial weapons in 3-D - This image shows bacterial infection of host cells: Pathogens of the type Salmonella typhimurium (orange) establish contact to a human host cell (blue). The plague, bacterial dysentery, and cholera have one thing in common: These dangerous diseases are caused by bacteria which infect their host using a sophisticated injection apparatus. Through needle-like structures, they release molecular agents into their host cell, thereby evading the immune response. Researchers at the Max Planck Institute for Biophysical Chemistry in Göttingen in cooperation with colleagues at the Max Planck Institute for Infection Biology in Berlin and the University of Washington in Seattle (USA) have now elucidated the structure of such a needle at atomic resolution. Their findings might contribute to drug tailoring and the development of strategies which specifically pr... Pollination with precision: How flowers do it - Next Mother's Day, say it with an evolved model of logistical efficiency ? a flower. A new discovery about how nature's icons of romance manage the distribution of sperm among female gametes with industrial precision helps explain why the delicate beauties have reproduced prolifically enough to dominate the earth.
... New technique reveals unseen information in DNA code - This image shows the differences in chemical structure of the
5-methylcytosine (5mC) base (left) from the 5-hydroxymethylcytosine
(5hmC) base in DNA against a background of DNA sequencing imagery. Imagine reading an entire book, but then realizing that your glasses did not allow you to distinguish "g" from "q." What details did you miss?
... Ancient giant turtle fossil revealed - This is a reconstruction of Carbonemys preying upon a small crocodylomorph. Picture a turtle the size of a Smart car, with a shell large enough to double as a kiddie pool. Paleontologists from North Carolina State University have found just such a specimen ? the fossilized remains of a 60-million-year-old South American giant that lived in what is now Colombia.
... Abundance of rare DNA changes following population explosion may hold clues to common diseases - One-letter switches in the DNA code occur much more frequently in human genomes than anticipated, but are often only found in one or a few individuals.
... Elephant seal tracking reveals hidden lives of deep-diving animals - Researchers at the University of California, Santa Cruz, who pioneered the use of satellite tags to monitor the migrations of elephant seals have compiled one of the largest datasets available for any marine mammal species, revealing their movements and diving behavior at sea in unprecedented detail.
... Color of robins' eggs determines parental care - A male robin will be more diligent in caring for its young if the eggs its mate lays are a brighter shade of blue.
... A microRNA prognostic marker identified in acute leukemia - A study has identified microRNA-3151 as a new independent prognostic marker in certain patients with acute leukemia. The study involves patients with acute myeloid leukemia and normal-looking chromosomes (CN-AML).
... Researchers use light to switch on gene expression - Imagine being able to control genetic expression by flipping a light switch. Researchers at North Carolina State University are using light-activated molecules to turn gene expression on and off. Their method enables greater precision when studying gene function, and could lead to targeted therapies for diseases like cancer.
... New 'Map of Life' project aims to show distribution of all animals, plants on planet - A research team involving Yale University and the University of Colorado Boulder has developed a first public demonstration version of its "Map of Life," an ambitious Web-based endeavor designed to show the distribution of all living plants and animals on the planet.
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