This photomicrograph depicted a number of Gram-positive, endospore-forming Bacillus anthracis bacteria. B. anthracis is the pathologic microorganism responsible for the disease “anthrax”, an acute infectious disease, which most commonly occurs in wild and domestic vertebrates (cattle, sheep, goa... Read More
Under a very high magnification of 12000X, this colorized scanning electron micrograph (SEM) revealed the presence of a large grouping of Gram-negative Salmonella typhimurium bacteria that had been isolated from a pure culture. See PHIL 10982 for a black and white version of this image.
How d... Read More
When I was a graduate student at the Medical College of Virginia, many of the microbiologists in my department were very active in the local ASM. Our local ASM provided opportunities to graduate students and postdocs to present their work to an outside audience of scientists from the surroundin... Read More
Flu season may be a bad time to check into a California hospital--and probably everywhere else in the country as well.
In a demonstration of what many experts would call appalling medical ethics, only slightly more than half of healthcare workers in California hospitals received a flu shot la... Read More
Where better to look for a sunscreen formula than in cyanobacteria – organisms that thrived on Earth before there was enough oxygen to block harmful ultraviolet light? The genes and enzymes responsible for producing sunscreen molecules in one such cyanobacterium have now been identified, a step ... Read More
A harmful algae bloom takes off in Kathryn Coyne's Lewes laboratory, turning a sample of saltwater yellow.
Then she adds the secret ingredient: a common bacterium called Shewanella.
Within 24 hours, dinoflagellates, the microbes that caused the bloom, are history.
When Coyne looks under... Read More
One of the most difficult aspects of working at the nanoscale is actually seeing the object being worked on. Biological structures like viruses, which are smaller than the wavelength of light, are invisible to standard optical microscopes and difficult to capture in their native form with other ... Read More
Perhaps no flu season in recent memory has been as hyped and harrowing as last year's, when swine flu infected millions and vaccine shortages led to long lines and frustration. As a new flu season dawns, and students head back to school, the latest vaccine—which protects against three strains of... Read More
Scientists at the Welsh School of Pharmacy say the first human clinical trials on a new drug to treat infections caused by the Hepatitis C virus have been successful.
Researchers say the new medication could now become an approved treatment.
300,000 people suffer from Hepatitis C in the UK... Read More
The 30-year-long search for a cure for AIDS, the world’s deadliest viral infection, may get a renewed boost from an unlikely source: a little-used Merck & Co. cancer drug.
Researchers at the University of North Carolina in Chapel Hill plan to test Merck’s drug, Zolinza, next year in about 20 ... Read More
Researchers have discovered how a microbe that can withstand sizzling doses of radiation builds its protective shield. Small complexes of manganese and other substances slurp up dangerous chemicals caused by radiation, protecting Deinococcus radiodurans bacteria from radiation’s ill effects, a s... Read More
The next cures for bacterial infections may come from an unlikely place: cockroach brains.
Tissues from cockroach and locust brains and nervous systems killed off 90% of E. coli and MRSA bacteria without harming the human cells they were attacking, according to researchers from the University... Read More
America has some of the cleanest drinking water on earth, but in many developiong countries, clean water is oftentimes hard to come by. Bacteria and other nasty organisms give rise to such waterborne illnesses as cholera, typhoid and hepatitis.
Many scientists are working on inexpensive and s... Read More
In the news last week: Two microbes helping us out.
You may think that the world is all about humanity, our place on the evolutionary scale, our position at the top of the food web, and, for better or worse, our domination of the planet. Or, you may view such ideas as being oh-so-terribly ret... Read More
A new automated test to detect tuberculosis infections and the presence of an antibiotic-resistant TB strain can shave days to weeks off the time it takes to identify new infections, allowing treatment to be started immediately to prevent further spread of the bacterium. The new test, which can ... Read More
After a smooth cruise into San Diego, where Atlantis would be embarking on her next expedition, the science teams went their separate ways, cars brimming with cooler-packed samples. We’ve had a couple of weeks to sort things out (a process which involved many brushes with frostbite, as samples w... Read More
Your discarded Christmas tree might help researchers fight the flu. Some evergreen tree leaves bristle with shikimic acid, an important starter material for the antiflu drug Tamiflu, scientists reported August 26 at the American Chemical Society’s fall meeting. The compound is a precursor for ma... Read More
Purdue University researchers have developed a new type of pump for drug-delivery patches that might use arrays of microneedles to deliver a wider range of medications than now possible with conventional patches.
The current "transdermal" patches are limited to delivering drugs that are made ... Read More
Earlier this summer, scientists reported the success of an unusual medical transplant; a woman with a life-threatening Clostridium difficile infection was treated, and apparently cured, with an injection of some of her healthy husband's gut bacteria. Researchers are now exploring the effects of... Read More
Duke University Medical Center researchers have found two genes in mice which might help identify why some people are more susceptible than others to potentially deadly staph infections.
The researchers uncovered important genetic clues that ultimately could help inform patient management and... Read More