All USA & Canada articles
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NewsFood scientists develop new antimicrobial for cleaning and sanitizing dry-food processing equipment
New research describes a novel chemical mixture for sanitation in low-moisture environments. Scientists found that a formulation containing cyclomethicone combined with vinegar-based acetic acid was the most effective against Salmonella and Cronobacter bacteria.
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NewsMulti-strain probiotic therapy shows promise in preventing bacterial vaginosis recurrence
A global team of experts has identified a promising new approach to prevent recurrence of bacterial vaginosis (BV). In a phase 1 randomized clinical trial, researchers found that a short course of a multi-strain probiotic restored protective bacteria to the vagina, significantly reducing disease recurrence.
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NewsStudy shows breath test can confirm bacterial infection
A study shows how molecules that are only broken down by infecting bacteria, and not by gut bacteria, can be used to confirm infection. By enriching these molecules with a naturally occurring carbon isotope, the researchers found that carbon dioxide produced when they break down is easily detected in a breath test.
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NewsTarget behind cancer drug shown to help fight influenza in mice
A protein already targeted by FDA-approved cancer drugs may also help the body fight influenza. A study found that Programmed Death-Ligand 1 (PD-L1), best known for helping tumors evade immune attack, instead helped immunocompromised mice clear flu-infected lung cells and survive infection.
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NewsScientists uncover how HPV-positive cancers hide from the immune system — and how to make them visible again
A new study solves a major mystery in cancer immunology by uncovering how HPV hides cancer cells from the immune system by using MARCHF8 to destroy MHC-I, which serves as a warning flag for the immune system.
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NewsPrototype breath tests spot bacterial infections in minutes
Researchers have adapted the long-used breath test for Helicobacter pylori, a bacterium that causes a common stomach infection, expanding the technology’s capabilities to detect a broader range of bacterial infections.
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NewsA newly identified disease of corn and sorghum may be mistaken for iron deficiency
A newly identified bacterial disease affecting corn and sorghum can closely resemble iron deficiency, potentially leading farmers to apply costly nutrient treatments that do not address the underlying problem.
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NewsFantastic fungi found with ability to freeze water
An international group of researchers has discovered the identity of fungal proteins that can catalyze ice formation at high subzero temperatures. One potential application of this discovery could be to engineer weather.
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NewsTrace levels of food pathogen do not always translate to health risk, says study
Ultra-sensitive food safety tests may drive food waste and unavailability with limited public health benefit, according to a study. These food safety measures and ultra-sensitive tests may drive edible food being thrown away, excessive packaging, and extra costs for consumers.
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NewsInappropriate antibiotic use for COVID-19 is linked to resistance
Taking azithromycin for as little as one day triggers antibiotic resistance in the respiratory tract, according to a first-of-its kind look by scientists at the changes that occur in the microbiome of hospitalized patients who were treated for COVID-19.
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NewsEngineered yeast gives the US a green edge in the critical minerals market
A new, U.S.-based, environmentally friendly method for mining rare-earth elements used in consumer electronics, clean energy, defense and biomedical imaging uses oxalic acid made by sugar-eating engineered yeast, extracting almost all the rare-earth elements from low-grade ore.
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NewsStudy identifies causes of potato dry rot in Colorado
Researchers have identified multiple fungal species causing dry rot in Colorado. By analyzing structural and molecular features, plant pathologists identified four Fusarium species associated with potato dry rot – including one that hadn’t previously been found in the U.S.
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NewsStudy maps how tuberculosis bacteria power themselves
A new study provides the first detailed 3D structure of a protein called EtfD, which the bacterium Mycobacterium tuberculosis uses to extract energy from lipids (fats), along with the first laboratory test capable of directly measuring its activity.
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NewsHeart disease risk tied to certain molecules made by gut microbes
In a study involving data from thousands of people, the risk of a new coronary heart disease diagnosis was statistically associated with bloodstream levels of nine specific molecules that are produced by gut microbes.
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NewsNew study fills research gap in food safety to better protect pregnant women from Listeria
Researchers developed new biologically plausible dose-response models — one for maternal infection and one for stillbirth — built on data from guinea pigs and gerbils, which share key biological traits with humans relevant to listeria pathogenesis.
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NewsOcean bacteria team up to break down biodegradable plastic
Researchers uncovered the role of individual ocean bacteria in the breakdown of a widely used biodegradable plastic. They also showed the complementary processes microbes use to fully consume the plastic, with one microbe cleaving the plastic into its component chemicals and others consuming each chemical.
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NewsClimate change is fueling disease outbreaks
Researchers analyzed the connection between a cyclone in Peru and a massive outbreak of dengue fever, a mosquito-borne viral disease that can cause fever, rash, and life-threatening symptoms like hemorrhage and shock. Their findings reveal that warmer, wetter weather linked to climate change is making disease epidemics more likely.
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NewsHigh-fat diets cause gut bacteria to enter brain, study finds
A new study, performed using mouse models, establishes that live bacteria from an imbalanced gut microbiome can enter the brain via the vagus nerve. The vagus nerve connects the brainstem to the heart, lungs, and major abdominal organs, including the stomach, intestines, liver and more.
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NewsShell game: How oysters enlist help from microbes
Researchers have discovered that oyster microbes might help with the “heavy lifting” of calcification that forms oyster shells. These microbes and the oysters co-express – or coordinate – the expression of certain genes that hint at a chemical “dialogue” between the host and these microbes.
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NewsNew gel-based system allows bacteria to act as bioelectrical sensors
Researchers have developed a safe bioelectronic sensor that allows for effective electronic communication even in liquid environments. The system uses the naturally occurring polymer chitosan, acting as a kind of shell to keep the bacteria from escaping.