Articles tagged with Bacteria
Researchers at the University of Chicago have discovered a light-sensitive signaling cascade in Pseudomonas aeruginosa that suppresses biofilm formation and virulence. The study, published in Nature Communications, identifies a small protein called DimA as the key trigger for this process.
Researchers used a mathematical framework to analyze bacterial energy investment strategies in aquatic environments, shedding light on how antimicrobial resistance genes spread. The study found that bacteria allocate limited energy resources among multiple physiological functions under environmental stress.
Researchers found that bacteria, such as Salmonella and E. coli, use a 'run-and-tumble' movement pattern to move through different environments, despite the complexity of their surroundings. This behavior is similar to walking through mud, where the underlying movement pattern remains the same, but with changes in speed and efficiency.
Researchers discovered that GBS interacts with C. albicans, increasing the risk of severe and fatal infections in newborns and making standard treatments less effective. The co-infection can also reduce the effectiveness of existing GBS treatments.
A new study found that population bottlenecks can fundamentally reshape how cooperation evolves and persists in complex microbial societies. The researchers discovered that stringent bottlenecks favored fruiting body formation and growth, while relaxed bottlenecks led to an overall increase in competitive fitness.
A recent study published in Gut journal revealed that Streptococcus anginosus produces methionine metabolites, which significantly contribute to the development of gastric cancer. The research opens new paths for microbiota-targeted prevention strategies.
The study will select the exact phage that is appropriate for each patient's bacteria, and aims to reduce antibiotic use and healthcare costs. Bacteriophages have been shown to be effective against resistant bacteria causing urinary tract infections.
Scientists at Leibniz-HKI discovered an enzyme called BurK that cleaves the toxic molecule malleicyprol in human pathogenic bacteria. This mechanism regulates toxin levels and renders it harmless to humans, offering a potential therapeutic approach for antibiotic-resistant infections.
The ERC Consolidator Grant will support advanced microscopy and spectroscopic analysis to examine bacteria's interaction with light, potentially leading to new imaging technologies. This research may inspire Living Photonic Circuits where organelles control and guide light paths within living cells.
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 discovered that a bacterium isolated from Japanese tree frogs has complete tumor-eliminating properties. The study found that this bacterium attacks cancer through two mechanisms, selectively accumulating in tumors and evading the immune system.
Research suggests soil microbial communities are a top predictor of childhood allergic disease rates, with certain assemblages appearing linked to better health outcomes. The study found that specific soil microbes promote health, while others negatively impact disease prevalence.
A nationwide study found that water treatment methods using chlorine as a primary disinfectant increase the risk of Legionnaires' disease. Chlorine used as a secondary disinfectant also increases disease rates, whereas monochloramine reduces the risk.
A Northwestern University study found that airplane and hospital air mostly contain harmless microbes from human skin, with some potentially pathogenic species in extremely low abundance. The study used worn face masks as a passive tool to monitor indoor air, revealing the invisible world of microbes floating in our shared air.
A new study found that black carbon formed during wheat straw burning can significantly reduce the spread of antibiotic resistance genes in soil and soybean crops. Black carbon altered nutrient availability, modified the physical and chemical aging of mulch films, contributing to reduced gene transfer.
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 discovered P. angustum selectively targets colorectal cancer, inducing direct tumor lysis and robust immune activation. The therapy promotes intratumoral infiltration of immune cells and enhances production of inflammatory cytokines, significantly prolonging survival in treated mice.
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.
Scientists have developed a new strategy to combat antibiotic resistance by studying the competition among plasmids within bacterial cells. By isolating individual cells and measuring intracellular plasmid competition, researchers discovered basic properties of plasmid and bacteria fitness and evolution.
A novel nanogel technology has been developed to kill drug-resistant bacteria, including Pseudomonas aeruginosa and Escherichia coli, with high selectivity and efficiency. The technology uses a heteromultivalent nanogel that binds to specific proteins on the bacterial surface, disrupting the membrane and leading to rapid bacterial death.
The Applied Microbiology International (AMI) society has issued a warning about the threat of antimicrobial resistance in viruses and other pathogens. AMI is urging policymakers to strengthen the revised Global Action Plan on Antimicrobial Resistance, including all types of pathogenic organisms.
A study published in Nature Communications found that while some municipal wastewater samples select for antibiotic-resistant E. coli, most instead suppress their growth, suggesting wastewater treatment plants may not be breeding grounds for resistance as commonly thought.
Scientists have discovered a method to induce the production of colanic acid, a compound found to promote longevity in animals, by exposing their gut microbiota to low doses of antibiotic cephaloridine. This approach shows promise for leveraging bacteria-targeting drugs to enhance lifespan.
Researchers demonstrate that bacteria can produce fabric and dye it in every color of the rainbow using a single vat. The approach uses bacterial cellulose as a potential alternative to petroleum-based fibers, reducing greenhouse gas emissions and environmental harm. The developed method yields vibrant colors that survive washing and h...
Scientists have created a comprehensive picture of bacterial stator evolution, revealing how these ancient proteins propelled bacteria 3.5-4 billion years ago.
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 are searching for cellular vulnerabilities in 'superbugs' like E. coli and P. aeruginosa to find new, effective therapeutics. The $5.3 million project aims to develop new ways to deliver lifesaving drugs directly into resistant pathogens.
A breakthrough study from Aarhus University identified two amino acid changes that allow plants to switch off their immune system and form symbiosis with nitrogen-fixing bacteria. This discovery could lead to breeding crops like wheat, barley, and maize that can fix nitrogen themselves, reducing the need for artificial fertilizer.
Researchers developed a composite hydrogel that integrates antibacterial, immunomodulatory, and regenerative functions to promote faster wound closure. The hydrogel demonstrated over 98% antibacterial efficacy and improved fibroblast and endothelial cell growth.
Researchers developed a highly efficient cell-free enzyme system that achieves remarkable increases in catalytic performance, reduces cofactor consumption, and produces high yields of 1-alkenes. The system overcomes challenges of whole-cell biocatalysts by mimicking the biological reaction environment.
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.
Researchers at California NanoSystems Institute discover how Pseudomonas aeruginosa uses mechanical sensing to detect and bind to sugar trails, forming deadly biofilms that are resistant to antibiotics. This breakthrough could lead to new treatments for cystic fibrosis patients and other biofilm-related infections.
Researchers have discovered a promising new antibiotic, pre-methylenomycin C lactone, which is over 100 times more active than the current antibiotic methylenomycin A. This finding provides hope in the fight against antimicrobial resistance (AMR), which affects millions of people worldwide.
Researchers at Rice University have engineered living cells to use a 21st amino acid that illuminates protein changes in real time, providing a new perspective on the inner workings of life. This breakthrough addresses a long-standing challenge in biology by allowing scientists to track subtle protein changes within living systems.
A new study reveals that a specific E. coli strain can block the gut's defense mechanism by injecting a protein called NleL, allowing it to spread more easily. This discovery could lead to new treatments that target how bacteria cause disease.
Researchers found high floral scent chemodiversity attracts a wider variety of pollinators but reduces bacterial richness on flowers. The discovery supports the 'Filthy Pollinator Hypothesis', which proposes that diverse scents prevent detrimental microbial colonization.
Researchers at University of Hawaiʻi at Mānoa identified Caulobacter inopinatus, a previously unknown species found in seawater collected near Oʻahu's south shore. The discovery highlights the connection between land and sea ecosystems through microbial exchanges.
Researchers at UMC Utrecht discovered that converting monoclonal antibodies from IgG to IgM isotype can significantly broaden their ability to recognize and bind multiple human-relevant bacterial pathogens. This finding could guide the future design of antibody therapies against bacterial infections.
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 at the University of Oregon have discovered a new treatment approach using a two-drug combination that is 10,000 times more effective than single-drug antibiotics in killing bacterial cells in lab tests. This promising method could help shorten treatment time and reduce toxicity in patients with chronic wound infections.
Researchers have identified a minority of plasmids as the primary cause of multidrug resistance in bacteria, evolving to gain resistance through selective pressure from antibiotics. The study developed a model for plasmid evolution, highlighting pathways and predicting future outbreaks.
The research team developed multifunctional nanocomposites that demonstrate excellent tumor-targeting capability through the EPR effect. Irradiation with near-infrared laser light achieved multidimensional therapeutic effects, including complete elimination of transplanted mouse cancers within 5 days.
A yeast commonly found in the gut, Candida albicans, can make salmonella infections worse by binding to bacteria and triggering a chain reaction that allows it to invade cells. Removing Candida's ability to create arginine, an amino acid involved in protein synthesis, also reduces salmonella's ability to infect.
Researchers have discovered how Fusobacterium nucleatum binds to human cell receptors CEACAM1 and CEACAM5, which are frequently overexpressed on many types of cancer cells. This binding mechanism is crucial for developing novel antitumor therapies.
Researchers identified 27 species of bacteria and fungi that collectively increase the risk of pancreatic cancer by 3.5 times. The study analyzed saliva samples from 122,000 healthy individuals and found that boosting the mouth's microbiome may protect against cancer.
Prochlorococcus, a cyanobacteria and photosynthesizing organism, is threatened by ocean warming. The microbe's optimal temperature range is between 66 and 86 degrees, but rising temperatures may lead to reduced productivity and impact the marine food web.
A team of scientists has estimated that an average cell line acquires and retains roughly 13 percent of its genes every million years through lateral gene transfer. This process enables microbes to adapt to new environments and access essential nutrients. The study provides the first quantitative analysis of gene transfer rates across ...
Researchers at RIKEN Center for Sustainable Resource Science identified ancient protein SCORE to help plants defend against various pathogens. By engineering synthetic SCORE variants, plants can be made resistant to multiple pathogen types.
Researchers discover how heme bound proteins catalyze hydrogen sulfide signaling in bacteria, leading to stress tolerance and antibiotic resistance. Disrupting this mechanism could inspire new antibiotic strategies against drug-resistant infections.
Researchers have discovered that prolonged stress in Escherichia coli bacteria leads to the formation of aggresomes, which store mRNA and enhance survival and recovery from stress. This breakthrough highlights a new target for disrupting the protective mechanism, potentially reducing the risk of infection relapse.
Researchers studied a microscopic alliance between algae and cyanobacteria to understand how bacteria lose genes and adapt to increasing host dependence. The study found that the level of integration between the symbionts affects genome size, gene content, and metabolic pathways.
A new study reveals bacteria can survive inside dust particles transported through desert storms, carrying new genes that may affect human health. The research team identified a beneficial bacterium from the Bacillus subtilis family, which could enhance applications in agriculture, construction, and medicine.
A new species of bacteria of the genus Bartonella has been found in the Amazon National Park, Brazil. The DNA is similar to that of two other Andean species, B. bacilliformis and B. ancashensis, which cause Carrión's disease. No evidence suggests this new species can cause disease, but further studies are needed.
Researchers discovered that single bacterial cells carry a 'memory' of their past environments, passing it down through generations. This finding could explain why antibiotics and vaccines sometimes fail and may point to more precise treatments.
A new study found that probiotics significantly reduced the presence of antibiotic-resistant bacteria and multidrug-resistant bacteria in the infant gut, while also promoting a more typical gut microbiome. This breakthrough has major implications for the global AMR crisis, particularly for preterm infants.
Researchers identified peptidoglycan hydrolases in archaea that kill bacteria, highlighting the importance of surveying diverse microbes to discover new antimicrobials. These proteins were found in 5% of surveyed archaeal species and show promise as novel antibacterial compounds.
A National Institutes of Health (NIH)-supported clinical trial found that two intravenous doses of the antibiotic dalbavancin seven days apart are as good as daily IV doses of conventional antibiotics over four to six weeks for treating complicated Staphylococcus aureus bloodstream infections. The study results provide clear evidence f...
Researchers have discovered that combining antimicrobial peptides from bees and frogs can prevent bacteria from mutating quickly, making them a promising alternative to traditional antibiotics. This finding could lead to safer disease control in livestock and agricultural settings.
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.