Articles tagged with Bacteriology
Researchers have identified a previously unknown mechanism that can reduce the risk of allergies and asthma in children. Certain bifidobacteria produce a substance called 4-hydroxyphenyl lactate (4-OH-PLA), which dampens immune responses to allergens, reducing the production of IgE antibodies.
Cyanobacteria can absorb and break down guanidine, using it as their sole nitrogen source, according to a new study. The ability to utilize guanidine is an advantage for colonization, despite its previous classification as a toxic substance.
Bacteria move through liquids using propellerlike tails called flagella, which alternate between clockwise and counterclockwise rotation. Researchers propose a tug-of-war mechanism instead of the traditional equilibrium 'domino effect' model, where proteins lining the tail exert pressure on their neighbors.
Research reveals that single-celled organisms are among the first to colonize newly formed lava environments, thriving in scarce water and nutrient conditions. As diversity stabilizes over time, rainwater plays a critical role in shaping microbial communities, suggesting an unexpected link between weather phenomena and life on Earth.
A UCLA study found that gut microbes are evolving differently in industrialized and non-industrialized parts of the world. Gene variants associated with starch digestion have
Researchers have created a novel synthetic enzyme that efficiently converts CO2 into formic acid, opening up new possibilities for biotechnological production of valuable chemicals and fuels. The enzyme, FAR, tolerates high concentrations of formate and is stable in both living cells and cell-free systems.
Researchers at Chalmers University of Technology have developed a new material that uses metal-organic frameworks to physically injure and kill bacteria, preventing biofilm formation without antibiotics or toxic metals. This innovation eliminates the risk of antibiotic resistance and has potential applications in various industries.
The discovery of five new bacteriophages in Lund University's Botanical Gardens' ponds has significant implications for phage research and treatment of bacterial infections. The newly-discovered phages were isolated using a motile E. coli strain, which was specifically designed to attract the viruses.
Researchers have catalogued a new collection of bacteria-eating viruses to combat the growing threat of hospital superbug Klebsiella pneumoniae. The open-source phage library offers scientists a valuable resource to develop new treatments and improve understanding of phages and bacteria interactions.
The AMR portal connects bacterial genomes, resistance phenotypes, and functional annotations, providing a central hub for global AMR research. It brings together experimental and computational data types, allowing researchers to investigate how genetic variants translate into antimicrobial resistance.
Researchers at Institut Pasteur found that aminoglycosides use sugar transporters to enter bacteria, increasing their effectiveness and potentially reducing the need for high doses. By doubling the number of transporters, they improved antibiotics' penetration rate and efficacy in even the most resistant E. coli strains.
Researchers have identified a novel principle in biology that mathematically explains why the growth of organisms slows as nutrients become more abundant. The global constraint principle unifies two classic biological laws and provides a fresh perspective for looking at growth across all forms of life.
Researchers at Arizona State University discovered two new forms of bacterial movement: swashing and shifting strategies. Bacteria can move across moist surfaces using currents created by fermentation, while other types use the type 9 secretion system to glide across surfaces.
Researchers used an experimental evolution approach to map genetic mutations in A. baumannii treated with tigecycline and colistin, confirming and extending existing knowledge on major mechanisms of resistance. The study's findings aim to develop genomics-based predictions of drug resistance and susceptibility.
Researchers found that early clindamycin administration significantly improved recovery rates in patients with invasive Group A Streptococcus (iGAS) infections. The study also showed that M1uk strain does not worsen prognosis in critically ill adults, but prompt treatment remains crucial.
A literature review of cheese fermentation and ripening identified five underused, evidence-based measures to improve efficiency and sustainability in cheese production. By exploiting whey and encapsulating lactic acid bacteria, dairies can reduce waste and optimize production processes.
Research discovered that meerkat's social group membership has the greatest influence on their gut microbiome, even more than age, sex, or environmental conditions. The study found that social interactions lead to the sharing of beneficial gut bacteria, which is vital for an animal's immunity and overall fitness.
A molecular system called PrrAB helps the TB bacterium generate energy and breathe, making it a promising target for new treatments. Researchers have identified an experimental compound DAT-48 that kills several strains of TB, including clinical ones, with potential synergy when combined with existing drugs.
Researchers from Ateneo de Manila University have identified key proteins produced by Helicobacter pylori that can trigger a strong immune response. By analyzing these proteins using immunoinformatics, the team has pinpointed potential vaccine targets to prevent stomach ulcers and cancer.
A new study by the University of Arkansas System Division of Agriculture reveals that water quality can significantly impact the type of microbial populations in poultry drinking water lines and litter. The study found a Bacillus species with probiotic properties was more prevalent in biofilms from poultry houses with normal sulfur-iro...
Researchers found that specific bacteria, such as Haemophilus parainfluenzae and Fusobacterium species, are associated with AIG-related neuroendocrine tumors. The study suggests that changes in host metabolism occur before alterations in the gastric microbiota, potentially creating a microenvironment that favors tumor growth.
Researchers at the University of Houston discovered that T. phoenicis can enter dormancy to evade detection, highlighting the resilience of spacecraft-associated microbes and raising concerns about planetary protection. The findings may lead to better detection methods and more effective sterilization strategies in various industries.
A new study reveals rising rates of invasive SDSE infections across Australia, particularly among older Australians and those from remote regions. The research highlights disparities in health outcomes between regions and populations, emphasizing the need for improved surveillance and prevention strategies.
Researchers have developed a new technique called Dual transposon sequencing to rapidly identify genetic interactions in bacteria. This method reveals vulnerabilities that could be targeted by future antibiotics.
The University of California - Riverside is receiving a $2 million grant to investigate how gut microbes interact with their human hosts to influence health. The research aims to create next-generation probiotics that strengthen the gut microbiome, improve vaccine effectiveness, and prevent infections.
Researchers at DTU have discovered a way to combat antibiotic-resistant bacteria by nourishing special bifidobacteria that is naturally occurring in the gut. Special lactic acids produced by bifidobacteria play a key role in keeping antibiotic-resistant bacteria at bay.
A new review in Microbial Biotechnology highlights microbes as allies in various industries, from food fermentation to biofuels. Films such as French Kiss and The Martian showcase microbes as positive forces, challenging the traditional villain stereotype.
The human microbiome influences cancer growth and treatment outcomes through specific microbial signatures, metabolites, and biomarkers. The review highlights emerging interventions such as probiotics and engineered microbial therapies to improve precision oncology and non-invasive diagnostics.
Research reveals Salmonella Dublin, a cattle and human pathogen, is increasingly resistant to antibiotics, with similar genetic makeup across animal, human, and environmental samples. The study's findings highlight the need for a One Health approach to control its spread and evolution.
Researchers discovered that mitochondria use folate to prevent infection by competing with invading pathogens. In a study on Toxoplasma gondii, scientists found that the parasite grew more slowly when mitochondrial metabolism consumed folate, a critical nutrient for its survival.
Researchers use surface-enhanced Raman spectroscopy to analyze vaginal fluid biochemical fingerprints, detecting specific bacterial species like Lactobacillus iners. The portable device produces comparable results to high-end lab equipment, suggesting its potential for point-of-care monitoring.
Researchers found that a compound produced by Lactobacillus bacteria can reverse liver and gut damage caused by aflatoxin exposure. The molecule, 10-hydroxystearic acid, activated PPARα signaling to repair liver tissue and support gut health.
Researchers found that heavy use of copper antimicrobials can drive antibiotic resistance in bacteria, but switching to copper with other measures can help mitigate this effect. Copper-resistant bacteria also become resistant to antibiotics, suggesting a common evolutionary pathway.
Researchers at Nara Institute of Science and Technology reveal the essential role of LptM in maturing and stabilizing the LptDE complex, a key component of Gram-negative bacteria's outer membrane. This finding provides fundamental insights that may support antibiotic design and advances understanding of bacterial virulence.
Research reveals that Faecalibacterium prausnitzii inhibits the growth of Fusobacterium varium, promoting a balance in the gut microbiota. This interaction is likely to occur through direct contact between the bacteria, and may have implications for improving intestinal health.
Japanese scientists have identified a novel genetic mutation in Streptococcus pyogenes associated with severe invasive infections. The mutation weakens bacterial growth in human blood and has been found unique to Japanese isolates, indicating a new pathogenic mechanism.
A recent study found that bacteria employ amyloids, a key driver of Alzheimer's disease, as a molecular suit of armor against predatory bacteria. By understanding this mechanism, scientists may develop new strategies to combat antibiotic-resistant microbes and potentially even neurodegenerative diseases like Alzheimer's.
Researchers at Hiroshima University have found that fermenting stevia leaf extract with bacteria kills off pancreatic cancer cells without harming healthy kidney cells. The study identified chlorogenic acid methyl ester as the active anti-cancer compound, which exhibits stronger toxicity to cancer cells than chlorogenic acid alone.
The Buck Institute is pioneering a cloud-based platform to simulate the dynamic behavior of microbial cells, overcoming current whole-cell models' limitations. The SIMBA project aims to advance our understanding of bacterial behavior and address critical challenges in biomanufacturing and national security.
Scientists identified a unique protein in bacteria that can trap parts of the membrane, causing damage to other bacteria. This discovery reveals a new 'superfamily' of lipid-trapping proteins, which could have implications for antibacterial development and synthetic biology.
A new study identifies a type of protein in bacteria that can trap parts of the membrane, causing damage to other bacteria. The discovery challenges existing knowledge of bacterial proteins and may lead to new ways to target harmful bacteria.
Researchers have elucidated the molecular composition of a pigment produced by anaerobic bacteria, revealing its role in cellulose degradation. The pigment shows mild antibiotic activity against Gram-positive bacteria.
Researchers have identified genetic bottlenecks that explain the emergence of pandemic cholera strains. These specific combinations of genes and allelic variants grant an advantage in human intestinal colonization, allowing a small subset of Vibrio cholerae to become deadly pathogens.
The study identified two new families of natural compounds, syrilipamides and secimides, produced by the bacterium. These molecules show remarkable toxicity against competing microorganisms, particularly fungi and amoebae. The discovery also highlights the importance of the SecA enzyme in expanding the chemical repertoire of Pseudomona...
Researchers identified two natural products, pandorabactin A and B, produced by Pandoraea bacteria to complex iron. These molecules may play a role in the survival of these pathogens in iron-poor environments.
Researchers have developed a two-step fermentation technique that controls acidification without allowing bacteria to grow, reducing the use of starter culture by up to 80%. This method extends shelf life, eliminating post-acidification issues and improving planning and logistics for dairy production.
Researchers created patterns on plastic surfaces that trap bacteria, preventing biofilm formation and making it easier for the host's immune system to clear infecting cells. This breakthrough could help reduce healthcare-associated infections linked to medical devices.
A team of researchers at Binghamton University has developed a dissolvable battery using probiotics, which can provide a safe and sustainable energy source for transient applications. The battery utilizes electricity-producing bacteria that are commonly found in the human digestive system and are considered biocompatible.
Researchers discovered that bacteria can utilize fluid pockets created by yeast cells to speed up their movement and spread. This new mechanism reveals a key role for physical properties in microbial interactions, potentially enhancing bacterial colonization of environments with limited moisture.
A team of scientists has identified a new type of antimicrobial peptide found in human proteins that selectively eliminate multidrug-resistant gram-negative bacteria. The discovery could pave the way for more effective treatments against infections resistant to conventional antibiotics.
Researchers at Politecnico di Milano have developed a system that allows bacteria to sense light and convert it into electrical signals without genetic modification. This method has the potential to develop next-generation antimicrobial platforms and biocompatible 'bacterial robots' for targeted drug delivery.
Researchers discovered microbial communities thriving in glacier habitats on the Tibetan Plateau, interacting with intra- and extra-glacial ecosystems. Human activities and pollution pose a threat to these microorganisms, highlighting the need for conservation efforts.
Researchers discovered biomarkers in gut bacteria and metabolites that can help diagnose and treat gastrointestinal diseases. The study found that certain biomarkers could predict multiple diseases, including gastric cancer and inflammatory bowel disease.
A recent study found that Metagenomic next-generation sequencing (mNGS) can detect pathogens in 86% of cases, outperforming conventional microbiological tests which identified pathogens in only 67% of cases. mNGS guides treatment decisions and improves patient outcomes by detecting rare/atypical pathogens.
Researchers found that Salmonella bacteria target iron-rich regions within immune cells to survive and spread. The pathogens exploit these niches, where the remaining iron is still enough for them to grow, driving infection.
Researchers found that x-ray sterilization effectiveness differs depending on dose rate and bacterial nutrient conditions. Long-term low-dose irradiation was more effective in nutrient-poor environments, while short-term high-dose irradiation achieved higher efficiency in nutrient-rich environments.
Researchers detected widespread contamination of retail chicken meat in Bangladesh with antibiotic-resistant E. albertii, a lesser-known but deadly pathogen. The study highlights the need for improved hygiene measures and stricter regulations to prevent foodborne infections.
A novel selective medium was developed to isolate Escherichia albertii, a previously uncharacterized species. The CT-PS-XR-MacConkey agar selectively differentiated E. albertii from other bacteria, including those in food samples. This finding has significant implications for the identification and study of this pathogen.
Tulane University scientists developed a handheld device to deliver rapid and accurate tuberculosis diagnoses in under an hour. The device, called the lab-in-tube assay (LIT), can detect Mycobacterium tuberculosis DNA in saliva, blood, and sputum samples, offering a cost-effective tool for improving TB diagnoses in resource-limited areas.
Researchers developed a triplex real-time quantitative fluorescence PCR method for detecting three major drug resistance genes, mcr-1, bla NDM-1, and vanA. The new method offers improved detection sensitivity and accuracy compared to existing single-gene analysis.