Microbes Corrode Steel in Ships, Marine Infrastructure
Washington, DC - September 16, 2016 - Rust is the bane of steel, whether on cars, on ships and boats, or as part of marine infrastructure. Now, contrary to previous thinking, it turns out that the ocean-dwelling, steel-corroding species, Mariprofundus sp. DIS-1, can thrive under aerobic conditions, rather than being limited to “micro-aerobic” or anaerobic conditions. That means steel in marine environments is more vulnerable to bacterial depredations than previously thought. The research is published on Friday, September 16th in Applied and Environmental Microbiology, a journal of the American Society for Microbiology.
Molecules Released by Klebsiella pneumoniae Bacterium Pave the Way for Invasive Infection
Washington, DC – September 13, 2016 – It’s been known that the bacterium Klebsiella pneumoniae secretes small molecules called siderophores that enable it to acquire iron from a host and fuel its spread. Now, Michigan researchers have found that these molecules play additional roles in helping the organism invade. Their report is published this week in mBio®, an online open-access journal of the American Society for Microbiology.
Media Advisory: Longer Contact Times Increase Cross-Contamination of Enterobacter aerogenes from Surfaces to Food; Is the Five Second Rule Real?
Washington, DC – September 6, 2016 – Bacterial cross-contamination from surfaces to food can contribute to foodborne disease. Researchers from Rutgers University evaluated the cross-contamination rate of Enterobacter aerogenes using scenarios including four different surface types, (stainless steel, tile, wood, and carpet) four food types, (watermelon, bread, bread with butter, and gummy candy) four contact times, (<1, 5, 30 and 300 seconds), and two bacterial preparation methods. The researchers found that more bacterial transfer occurred during the longer contact times, but the type of food and surface type also significantly impacted cross-contamination from surface to food, with some transfers taking place instantaneously.
Chinese Investigators Characterize the World of Resistance Gene Exchange Among Bacteria
Washington, DC – September 9, 2016 – Certain antibiotic resistance genes are easily transferred from one bacterial species to another, and can move between farm animals and the human gut. A team led by Chinese researchers has characterized this “mobile resistome,” which they say is largely to blame for the spread of antibiotic resistance. They found that many antibiotic resistance genes that are shared between the human and animal gut microbiome are also present in multiple human pathogens. These findings are published September 9 in Applied and Environmental Microbiology, a journal of the American Society for Microbiology.
Fungi Contribute to Delayed Healing of Chronic Wounds
Washington, DC – September 6, 2016 – Researchers in Pennsylvania and Iowa have discovered that fungal communities found in chronic wounds can form mixed bacterial-fungal biofilms and can be associated with poor outcomes and longer healing times. Their report, the first deep characterization of the fungi found in diabetic foot ulcers, is published this week in mBio®, an online open-access journal of the American Society for Microbiology.
Zika Reference Strain Sequenced--Will Aid in Diagnosis, Screening
Washington, DC - September 1, 2016 - An international team of researchers has sequenced a strain of the Zika virus that will be used as a World Health Organization (WHO) reference strain to identify Zika virus infection in the blood, thus making it easier to diagnose the disease. While the reference material will undergo formal WHO review in October, the agency has given the go-ahead for the strain’s use given the urgent need of medical products to diagnose and treat Zika. The sequence is published September 1st in Genome Announcements, a journal of the American Society for Microbiology.
ICU Patients Lose Helpful Gut Bacteria within Days of Hospital Admission
Washington, DC – August 31, 2016 – The microbiome of patients admitted to the intensive care unit (ICU) at a hospital differs dramatically from that of healthy patients, according to a new study published in mSphere. Researchers analyzing microbial taxa in ICU patients' guts, mouth and skin reported finding dysbiosis, or a bacterial imbalance, that worsened during a patient's stay in the hospital. Compared to healthy people, ICU patients had depleted populations of commensal, health-promoting microbes and higher counts of bacterial taxa with pathogenic strains – leaving patients vulnerable to hospital-acquired infections that may lead to sepsis, organ failure and potentially death.
Researchers Identify Multidrug-resistant E. coli Bacteria from New Jersey Patient
Washington, DC – August 29, 2016 – New Jersey researchers have identified what is believed to be the first strain of Escherichia coli bacteria from a patient in the United States that harbored two mobile genes making it resistant to both broad spectrum carbapenem antibiotics as well as colistin, an older antibiotic increasingly used as a last resort for multidrug-resistant infections. Their report is published this week in mBio®, an online open-access journal of the American Society for Microbiology.
Bacteria in Smokeless Tobacco Products May be a Health Concern
Washington, DC - August 26, 2016 - Several species of bacteria found in smokeless tobacco products have been associated with opportunistic infections, according to a paper published August 25 in Applied and Environmental Microbiology, a journal of the American Society for Microbiology.
Improving Food Quality by Studying the Microbial Composition of Raw Milk
Washington, DC – August 23, 2016 –Findings from a new study, reported in the journal mBio, may help food companies improve the quality of dairy products. The researchers have discovered that bacteria in raw milk arriving at dairy processing facilities are highly diverse and differ according to season, but still contain a core microbiota.