More USA & Canada News – Page 55
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NewsScientists uncover key step in how diazotrophs ‘fix’ nitrogen
There are only two ways of fixing nitrogen, one industrial and one biological. To better understand a key component of the biological process, researchers took a multi-pronged approach.
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NewsElderberry juice shows benefits for weight management, metabolic health
Elderberry juice may be a potent tool for weight management and enhancing metabolic health, according to a recent study.
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NewsBacteria produce molecules that help viruses infect competing bacteria
In a new study, researchers have discovered a new way that bacteria can kill their competitors in complex microbial communities, revealing novel approaches to leverage viruses to kill harmful bacteria.
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NewsClimate change linked with worse HIV prevention and care
Researchers find that climate change and extreme weather events impact HIV prevention and care through numerous pathways, including increased HIV exposure, reduced testing, and worse health outcomes for people living with HIV.
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NewsWhat we eat affects our health — and can alter how our genes function
New research identifies the direct epigenetic effects of two common byproducts of fiber digestion and finds that some of the alterations in gene expression have anti-cancer actions.
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NewsUC San Diego to lead data hub of CDC-funded pandemic preparedness network
The CHARM Network will leverage expertise from across the country to help the nation better prepare for respiratory virus outbreaks.
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NewsPlant cells gain immune capabilities when it’s time to fight disease
New research reveals how plant cells switch roles to protect themselves against pathogens. When a threat is encountered, the cells enter a specialized immune state and temporarily become PRimary IMmunE Responder (PRIMER) cells.
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NewsScientists advance nanobody technology to combat deadly Ebola virus
Researchers have developed the first nanobody-based inhibitors targeting the Ebola virus. Their small size allows them to access areas of the virus and human tissues that larger antibodies cannot.
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NewsAgricultural scientists call for removal of more than 120 ‘phantom agents’ from pathogen regulatory lists
Wiping “phantom agents” from a list of suspected plant pathogens would improve agricultural efficiency and food security by updating regulations on international shipment of pathogen-free plant materials destined for countries where they are needed.
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NewsStudy shows head trauma may activate latent viruses, leading to neurodegeneration
Researchers have uncovered mechanisms that may connect the dots between trauma and the emergence of disease, pointing to latent viruses lurking in most of our brains that may be activated by the jolt, leading to inflammation and accumulating damage.
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NewsAs prevention strategy for sexually transmitted infections rolls out, experts highlight both promise and knowledge gaps
Real-world evidence demonstrates that the postexposure strategy of doxy PEP is reducing the rate of syphilis and chlamydia, but has had little to no effect on gonorrhea and needs close monitoring for signals of antibiotic resistance.
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NewsNew study shows plummeting STIs with doxyPEP use
A new study has found that rates of chlamydia and syphilis plummet among people prescribed doxycycline for sexually transmitted infection prevention in routine clinical care.
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NewsSome bacteria evolve like clockwork with the seasons
The longest natural metagenome time series ever collected, with microbes, reveals a startling evolutionary pattern on repeat.
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NewsHerpes virus might drive Alzheimer’s pathology, study suggests
Researchers have uncovered a surprising link between Alzheimer’s disease and herpes simplex virus-1 (HSV-1), suggesting that viral infections may play a role in the disease.
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NewsStudy traces Ebola’s route to the skin surface
Researchers have traced a cellular route the Ebola virus uses to traverse the inner and outer layers of skin and emerge onto the skin’s surface. The study identifies new cell types within the skin that are targeted by EBOV during infection.
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NewsNew study suggests RNA present on surfaces of leaves may shape microbial communities
Biologists have shown that the surfaces of plant leaves are coated with a diverse array of RNA molecules, suggersting this may play a role in shaping the microbial communities that inhabit them, potentially influencing plant health and interactions within their environment.
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NewsMediterranean diet changes gut bacteria, boosting memory and cognition
A new study suggests the Mediterranean diet’s brain-boosting benefits may work by changing the balance of bacteria in the gut.
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NewsThese bacteria perform a trick that could keep plants healthy
Researchers have shown that some types of soil bacteria can influence a plant’s balance of growth and defense. The bacteria produce an enzyme that can lower a plant’s immune activity and allow its roots to grow longer than they would otherwise.
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NewsStudy links vaginal microbiome differences to higher cervical cancer rates in Native American women
Researchers found that protective microorganisms were present at higher rates in non-Native women compared with Native American women.
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NewsResearch points the way to lifesaving antiparasitic drugs while unlocking a scientific mystery
A breakthrough in understanding how a single-cell parasite makes ergosterol (its version of cholesterol) could lead to more effective drugs for human leishmaniasis, a parasitic disease that kills about 30,000 people around the world every year.