More USA & Canada News – Page 3
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NewsNew test distinguishes vaccine-induced false positives from active HIV infection
A new device correctly identified those with active HIV-1 infection 95% of the time and those without active infection but with vaccine-induced molecules that could trigger a false positive, 98% of the time.
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NewsResearchers confirm new rickettsia species found in dogs
Researchers have confirmed that a species of Rickettsia first seen in dogs in 2018 is a new species of bacteria. The new species is associated with symptoms similar to those of Rocky Mountain spotted fever (RMSF) in dogs, but has not yet been found in humans.
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NewsCedars-Sinai and Exobiosphere partner to launch biomedical research aboard the Haven-1 Space Station
Cedars-Sinai is partnering with Exobiosphere, a company that has developed scientific hardware to automate biomedical research in space and on Earth, and will send experiments to Haven-1, set to become the world’s first commercial space station.
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NewsPlant ‘first responder’ cells warn neighbors about bacterial pathogens
Researchers have found that a subset of epidermal cells in plant leaves serves as early responders to chemical cues from bacterial pathogens and communicate this information to neighbors through a local traveling wave of calcium ions.
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NewsAntibiotics could trigger immune response through gut microbiome metabolites
Researchers report how one of the most abundant gut bacteria responds to tetracyclines, a class of commonly prescribed antibiotics. Newly characterized signals released by the bacterium could aid the host’s immune response, inhibit pathogens and restructure the gut microbiome.
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NewsAlgae show how to make two proteins from one messenger RNA
Scientists have uncovered a hidden feature of protein translation in green algae, offering a new perspective on the basic rules of gene expression.
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NewsStudy links childhood vaccination to lower risk of drug-resistant bacteria
Children in Guatemala who received a common vaccine that helps prevent pneumonia were less likely to carry antibiotic-resistant bacteria, according to a new study examining whether rotavirus (RV) and pneumococcal (PCV13) vaccines reduce gut colonization by a group of bacteria.
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NewsPresurgical vaccine may prevent orthopedic device infections
Researchers have developed a novel presurgical vaccine strategy that may prevent dangerous infections in patients receiving hip, knee, and other joint replacements, creating an injectable scaffold designed to stimulate the immune system.
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NewsAll life copies DNA unambiguously into proteins. Archaea may be the exception.
A study shows how a methane-producing member of the Archaea, interprets one three-letter sequence — normally a stop codon that signals the end of a protein — in two different ways, synthesizing two different proteins seemingly at random, though biased by conditions in the environment.
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NewsGroundbreaking technique unlocks secrets of bacterial shape-shifting
Scientists have long known that bacteria come in many shapes and sizes, but understanding what those differences mean has remained a major challenge, especially for species that can’t be grown in the lab. A groundbreaking method could change how researchers study bacterial diversity.
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NewsA molecule opens a breach in HIV, providing access to its reservoirs
An international team has unveiled how a molecule capable of opening the “shell” of HIV improves the elimination of infected cells. The study demonstrates how a new CD4-mimetic compound, CJF-III-288, modifies the HIV envelope protein structure to allow for a better immune response.
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NewsResearchers identify why some people with HIV achieve remission after antibody treatment
Researchers have discovered why some people living with HIV who are given broadly neutralizing anti-HIV antibodies (bNAbs) can safely stop taking standard, lifelong HIV medications and maintain control of the virus for years, while others given the same treatment do not achieve this remission.
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NewsNew global guidelines streamline environmental microbiome research
A team of nearly 250 researchers from 28 countries has developed a new set of reporting guidelines for environmental microbiomes called STREAMS. The guidelines are organized by the structure of a scientific manuscript and help ensure that important details aren’t overlooked.
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NewsTreatment and prevention of HIV/AIDS: infectious disease experts talk unfinished business
As the world marks World AIDS Day, world-renowned infectious disease expert Anthony Fauci, MD, and Greg Folkers, MS, MPH, highlight advances made in the treatment and prevention of HIV, but caution ’History will judge us harshly should we squander this opportunity’.
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NewsLong-term HIV control: Could this combination therapy be the key?
A new study shows it may be possible to control HIV without long-term antiviral treatment — an advance that points the way toward a possible cure for a disease that affects 40 million people around the world.
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News Lack of dietary iron may impair immune cells’ ability to fight influenza
New research suggests that a lack of dietary iron can negatively affect the ability of immune cells to respond to viral infection in the lungs. In mice with dietary iron deficiency and influenza, immune cells struggled to produce a key signal needed to fight viruses and did not regain this ability.
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NewsNew guideline on pre-exposure and postexposure HIV prevention
Multiple pre-exposure (PrEP) and postexposure (PEP) treatments are now available to prevent HIV infection. An updated Canadian guideline contains 31 recommendations and 10 good practice statements to help clinicians and other health care professionals offer these options to patients.
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NewsUS- & Argentina startup Michroma wins €250k investment with The Future is Fungi Award 2025
A new frontier in biotechnology just crowned its next pioneer. Out of 187 groundbreaking startups from 59 countries, Michroma wins the The Future is Fungi Award 2025, taking home €250,000 / USD 289 000 in investment.
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NewsMetabolites produced in the intestine play a central role in controlling obesity and diabetes
A study has identified a group of metabolites that travel from the intestine to the liver and then to the heart, where they are pumped throughout the body. These metabolites play an important role in controlling metabolic pathways in the liver and insulin sensitivity.
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NewsGlobal Virus Network issues warning on the Marburg virus outbreak in Ethiopia
The Global Virus Network (GVN) has issued a statement on the newly confirmed outbreak of Marburg virus disease (MVD) in southern Ethiopia. This represents the country’s first documented outbreak of Marburg virus and raises urgent public health, research, and surveillance imperatives.