All USA & Canada articles – Page 32
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NewsScientists reveal how doxycycline for STI prevention affects the gut microbiome
Taking a dose of the oral antibiotic doxycycline after a high-risk sexual encounter has dramatically reduced the incidence of sexually transmitted infections (STIs) in places where the strategy is being tried. Source: NIAID Capsules of the antibiotic doxycycline Despite its effectiveness, the new strategy, known ...
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NewsGut bacteria engineered to act as tumor GPS for immunotherapies
Cancer researchers have engineered gut derived E. coli bacteria to express immune-activating cytokines on their surfaces, with the idea that the bacteria would move into tumors and induce potent immune responses.
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NewsExperts propose key criteria to classify prebiotics
A group of eight leading international scientists has developed a comprehensive framework that outlines the criteria for establishing prebiotic status, providing much-needed clarity in this evolving field.
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NewsStudy identifies potential novel drug to treat tuberculosis
A new study demonstrates that a novel semi-synthetic compound can be derived from natural compounds to produce potent activity against Mycobacterium tuberculosis, including multi-drug resistant strains.
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NewsZooplankton go ‘Eew!’ to cleaning feces-contaminated water
Scientists were recently surprised to find that the natural community of zooplankton — tiny, aquatic animals known to graze on bacteria — present in freshwater and saltwater do not clean water that is contaminated with fecal microorganisms.
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NewsWastewater bacteria can break down plastic for food
Researchers have discovered how cells of a Comamonas bacterium break down plastic for food. First, they chew the plastic into small pieces, then secrete an enzyme that breaks down the plastic further, and finally use a ring of carbon atoms as a food source.
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NewsPlant compound used in traditional medicine may help fight tuberculosis
A compound found in African wormwood — a plant used medicinally for thousands of years to treat many types of illness — could be effective against tuberculosis, according to a new study.
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NewsNSF to invest $5 million to Biofoundries project
The U.S. National Science Foundation and partner agencies in the U.S., Canada, Finland, Japan, the Republic of Korea (ROK), and the United Kingdom have announced funding awards in their Global Centers competition. One of the centers, the Reliable and Scalable Biofoundries for Biomanufacturing and Global Bioeconomy, includes researchers from the ...
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NewsA tool to enhance taste and texture of sourdough and study the complexity of microbiomes
Researchers explore how acetic acid bacteria shapes emergent properties of sourdough, with implications across complex microbial systems.
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NewsResearchers identify likely culprit that turns classical Klebsiella pneumoniae into a drug-resistant killer
A hypervirulent strain of Klebsiella pneumoniae can infect and severely sicken otherwise healthy people. Researchers have identified a likely culprit that is causing the hypervirulence.
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NewsBovine H5N1 influenza may spread via milking
Milking practices may be linked to the transmission of bovine H5N1 influenza virus, which affects dairy cattle and was first detected in the U.S. in spring 2024.
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NewsPlankton bloom off Madagascar linked to drought in South Africa
Researchers show that dust from drought-stricken Southern Africa caused a bloom of marine phytoplankton off the southeast Madagascar coast from November 2019 through February 2020.
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NewsAntibodies in breast milk provide protection against common GI virus
A study has found that breast milk provides protection against rotavirus, a common gastrointestinal disease that causes diarrhea, vomiting and fever in infants.
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NewsVaccinating the young can save the old in the Tropics
A model suggests that vaccinating children and teens against the flu can help protect the elderly in tropical countries.
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NewsNew mouse models offer valuable window into COVID-19 infection
Scientists have developed six lines of humanized mice that can serve as valuable models for studying human cases of COVID-19 because their cells were engineered to include two important human molecules that are involved in infection of human cells.
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NewsNew images of RSV may expose stubborn virus’s weak points
Using cryo-electron tomography, researchers have revealed details of molecules and structures essential to RSV’s form and function.
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NewsCould a bout of COVID protect you from a severe case of flu?
More than 200 viruses can infect and cause disease in humans; most of us will be infected by several over the course of a lifetime. Does an encounter with one virus influence how your immune system responds to a different one?
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NewsResearchers discover mechanism driving immune perturbations after severe TB infections
Rsearchers have discovered a mechanism that drives the long-term decline in immune response that is observed after tuberculosis (TB) has been successfully treated.
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NewsGetting the flu and then your shot may benefit immunity
In a new study, researchers have found that natural immunity from previous flu infections has a significant impact on how well future influenza vaccinations work.
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NewsPromising TB therapy safe for patients with HIV
A therapy showing promise to help control tuberculosis (TB) does not interfere with combined antiretroviral therapy (cART), according to new research.