All USA & Canada articles – Page 44
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NewsBiologists and engineers follow goopy clues to plant-wilting bacteria
Slippery, drippy goop makes Ralstonia bacteria devastating killers of plants, causing rapid wilting in tomato, potato and a wide range of other crops, according to new research.
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NewsAncient DNA pushes back record of treponemal disease-causing bacteria by 3,000 years
Scientists have recovered a genome of Treponema pallidum from 5,500-year-old human remains in Sabana de Bogotá, Colombia. The research expands knowledge about the history of this infectious disease and its occurrence in human populations.
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NewsNew research suggests gut bacteria may be linked to memory decline in mild cognitive impairment and Alzheimer’s disease
A new review is shedding light on the growing evidence that gut microbiome imbalances—known as dysbiosis—may play a key role in the development and progression of mild cognitive impairment (MCI) and Alzheimer’s disease.
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NewsScientists illuminate ancient plant-fungus partnership at molecular level
Researchers have coupled two powerful tools that allow scientists to identify which proteins work together to make plant-fungi partnerships function—and to verify those interactions in living plant roots, where the collaboration actually occurs.
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NewsResurrected ancient enzyme offers new window into early Earth and the search for life beyond it
By resurrecting a 3.2-billion-year-old enzyme and studying it inside living microbes, researchers have created a new way to improve our understanding of the origins of life on Earth. The study uses synthetic biology to reverse-engineer modern enzymes and rebuild their possible ancestors.
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News‘Trojan horse’ may deliver toxic dose of copper to bacterial colonies, including drug-resistant MRSA infections
A research team is developing a drug that works in combination with copper to kill bacteria, including those that cause MRSA, a type of staph infection that is resistant to usual treatments.
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NewsHow a single gene shapes gut health and IBD risk
Two recent studies highlight the role of a gene called PTPN2 in protecting the gut from harmful bacteria linked to inflammatory bowel disease (IBD). When PTPN2 does not function properly, the gut becomes more vulnerable to infection and inflammation.
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NewsHow a potential antibiotics ban could affect apple growers
Antibiotic resistance in human and animal health is on the forefront of public debate, but it’s a less well-known issue in plant agriculture. However, antibiotics are important tools in fruit production, and their efficacy hinges on avoiding resistance in disease-causing bacteria. Source: Tianna DuPont, WSU Extension Apple ...
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NewsSecret of youth: New study shows gut microbiota directly regulates intestinal stem cell aging
A new study reveals that age-related changes in the gut microbiota directly impair intestinal stem cell (ISC) function and that restoring a youthful microbial environment can reverse this decline.
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NewsBreath carries clues to gut microbiome health
Researchers have shown that disease-associated bacteria in the gut can be detected through exhaled breath. They found that chemicals released by gut microbes and captured from the breath of children and mice can reveal the composition of the bacteria living in the intestines.
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NewsEvidence of ‘lightning-fast’ evolution found after dino-killing asteroid impact
The asteroid that struck the Earth 66 million years ago devastated life across the planet, wiping out the dinosaurs and other organisms. But new research shows new species of plankton appeared fewer than 2,000 years after the world-altering event.
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NewsScientists solve 66 million-year-old mystery of how Earth’s greenhouse age ended
Experts studying foraminifera fossils have discovered that concentrations of calcium in the sea dropped by more than half across the last 66 million years, which likely caused Earth’s massive drop in temperature.
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NewsOral bacterium may promote breast cancer development and spread
Researchers found that Fusobacterium nucleatum, an oral bacterium commonly associated with periodontal disease, can promote breast cancer initiation, tumor growth and spread by inducing DNA damage and altering cancer cell behavior.
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NewsResearch team identifies species of brucellosis-causing bacteria in Cameroon
Researchers have identified the specific species of the Brucella bacterium that causes illness in animals in Cameroon. A study of more than 4,600 livestock animals found that the only Brucella species present was Brucella abortus, a species primarily associated with cattle that causes pregnancy loss and infertility.
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NewsPositive interactions dominate among marine microbes, six-year study reveals
Researchers have found that marine microbes interact in ways that benefit one another more often than they eat each other or compete. Periods of elevated ocean temperatures, usually times of stress for these microbes because of a dearth of nutrients, resulted in even more of these positive interactions.
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NewsMost would recommend RSV immunizations for older and pregnant people
A US survey found an increase in awareness of immunizations that are available for RSV. The survey of 1,637 U.S. adults also found that about 6 in 10 respondents would recommend the vaccine or antibody injections to the groups recommended by the CDC, an increase from past years.
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NewsLithium study yields insights in the fight against HIV
Lithium, a widely used treatment for bipolar disorder and other mood disorders, has shown early promise in suppressing HIV. A new study found lithium can prevent infected cells from reactivating, and that it does so through an unexpected biological mechanism.
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NewsEarly translational study supports the role of high-dose inhaled nitric oxide as a potential antimicrobial therapy
Researchers report that high-dose inhaled nitric oxide (iNO) demonstrates potential antimicrobial activity in preclinical models and is safe and feasible in early human studies, supporting further clinical investigation.
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NewsEngineered nanobodies improved respiratory defenses in preclinical study
Engineered nanobodies improved protection against multiple viruses by bolstering respiratory mucus. The bispecific design of the nanobodies works against viruses, like influenza, which can normally evade mucosal defenses.
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NewsNew study shows how light suppresses virulence in antibiotic-resistant pathogen
Researchers uncover a light-sensitive signaling cascade in Pseudomonas aeruginosa that suppresses biofilm formation and virulence, offering a potential new strategy to combat antibiotic-resistant infections.