Articles tagged with Bacterial Strains
Researchers identified hypervirulent strains of Listeria monocytogenes associated with human infections, which are more invasive and infect central nervous system and fetus more often than those linked to food. The study used large-scale analysis of epidemiological, clinical, and microbiological data.
A University of Houston researcher is investigating the effect of dispersants on bacterial movement towards oil spills, aiming to understand natural cleaning processes and inform future spill cleanup strategies. The study will answer fundamental questions about human intervention's impact on bacteria's role in biodegradation.
Researchers found a new gene, mcr-1, that enables bacteria to resist polymyxins, the last line of defence against infections. The gene is widespread in E coli and K pneumoniae strains from pigs and patients in south China, suggesting its potential to spread rapidly into human pathogens.
Researchers at the Salk Institute identified a strain of E. coli bacteria in mice capable of improving tolerance to infections by preventing muscle wasting. The bacteria activate the IGF-1 pathway in fat tissues, maintaining normal levels and preserving muscle mass during pathogenic infections.
A study published in Immunity suggests that dietary fat impacts the severity and duration of autoimmune flare-ups in mice. Short-chain fatty acids were found to alleviate symptoms by promoting regulatory T cells, while long-chain fatty acids exacerbated inflammation.
Researchers believe ancient bacteria found in 20 million-year-old fossil may be related to Yersinia pestis, the bubonic plague. The discovery suggests plague may have been around for millions of years before humans existed.
Scientists have discovered that antibacterial soap is ineffective in reducing bacterial contamination when used under 'real life' conditions. The study found that triclosan, the active ingredient in antibacterial soap, has significant effects only after more than nine hours of exposure.
Researchers at Joslin Diabetes Center found that certain gut bacteria strains are associated with insulin resistance and metabolic syndrome in mice models. The team identified three common mouse strains with different microbiota populations, which were affected by diet and genetic background.
A new microfluidic technology enables rapid separation of antibiotic-resistant from susceptible bacteria, offering a game-changing solution for patients. This breakthrough could lead to faster and more effective treatment, reducing mortality rates and improving patient outcomes.
Jae Kyoung Kim's research uses mathematical modeling and synthetic biology to understand how biological circuits generate and sustain stable rhythms. The study found that a novel bacterial circuit generates robust rhythms under various conditions, providing insights into the fundamental mechanism of rhythm generation in biological syst...
Scientists have discovered that an infection caused by the Burkholderia bacteria transforms non-farming social amoebae into farmers. These farmer amoebae gather bacteria, carry them to new sites and seed the soil with them, showcasing a complex symbiotic relationship between all three partners.
A recent study by IU biologist Farrah Bashey-Visser found that microorganisms are constantly evolving due to competition with other microorganisms, leading to the development of antibiotic-resistant bacteria. This can catch humans off guard, requiring them to play catch-up in treatment efforts.
A recent study published in Applied and Environmental Microbiology suggests that dairy products can boost the effectiveness of probiotics. The researchers found that mice fed milk with the probiotic Lactobacillus casei BL23 had reduced symptoms compared to those without the probiotic.
Researchers at Rutgers University found a strain of bacteria that can breathe uranium, which makes it immobile and prevents contamination of drinking water. The discovery holds promise for cleaning up polluted groundwater at sites where uranium ore was processed to make nuclear weapons.
Researchers at the University of Iowa have found that prolonged exposure to Staphylococcus aureus bacteria causes insulin resistance and glucose intolerance in rabbits, mirroring the symptoms of type 2 diabetes. Anti-bacterial therapy or vaccines may hold promise for preventing or treating the disease.
Researchers at UC Davis are receiving $5 million in grants from the US Department of Agriculture's National Institute of Food and Agriculture. The funding will be used to develop new technologies and methods to prevent cross-contamination in produce processing, identify genetic traits of lactic acid bacteria found on fruits and vegetab...
Researchers have made significant progress in understanding the complex relationship between bacteria and the deadly frog disease chytrid fungus. The study found that only a small proportion of bacteria inhibited all forms of the disease, highlighting the need for diverse probiotic treatments to combat its shifting targets.
Research found that a more virulent group of S. suis strains causing disease in pigs worldwide are also implicated in human diseases like meningitis and septicaemia. The study suggests that changes in pig rearing practices may have led to the emergence of these strains.
Researchers found that nasal drops of harmless bacteria can inhibit the spread of meningococcal disease-causing bacteria. The study suggests a possible new approach for preventing outbreaks using a related but harmless type of bacteria, which appeared to prevent the disease-causing pathogen from colonizing the upper airway.
Scientists discovered that bacteria use direct connections to exchange nutrients, rather than releasing them into the environment. The study found that gut microbe E. coli forms unique nanotubes to connect with other bacteria.
The study found that Listeria monocytogenes adapts its metabolism specifically to the host genotype, correlating with the severity of symptoms in infected mice. Bacteria retain a 'memory effect' that reverts to a common metabolic fingerprint after laboratory cultivation.
Research by Professor Peter Young and his team reveals that bacterial strains are unique, with different genes and capabilities, similar to human individuals having unique genetic makeup. This study sheds light on the importance of understanding bacterial communities and their functioning through metagenomics.
Gut bacteria produce cephalosporinases that protect themselves and beneficial bacteria from antibiotics, while also giving protection to harmful bacteria. The researchers found genes in Bacteroides bacteria that produce an enzyme destroying certain antibiotics.
A treatment pioneered at the University of Pittsburgh Center for Vaccine Research is far more effective than traditional antibiotics in inhibiting the growth of drug-resistant bacteria. The new drug, called engineered cationic antimicrobial peptides (eCAPs), inhibited growth in about 90% of test bacterial strains.
Researchers at Brigham Young University have identified a potentially life-saving antibiotic produced by good bacteria found in turkeys. The MP1 antibiotic has shown promise in targeting staph infections, strep throat, and severe gastrointestinal diseases.
Researchers mapped ETEC bacteria's genetic composition to reveal its spread and identify potential vaccine targets. The study suggests a single bacterium has divided worldwide, leading to the development of a globally beneficial vaccine.
Researchers boosted bacteria's ability to produce isopentenol, a compound with desirable gasoline properties, by identifying and overexpressing genes that improve tolerance to solvent stress. The findings suggest a promising approach to developing a bacterial strain that can yield industrial quantities of renewable bio-gasoline.
A study by the University of Edinburgh found that MRSA bacteria from farm animals has been detected in UK hospitals, highlighting the need for strict biosecurity practices and responsible antibiotic use. The strain, CC398, is resistant to some common antibiotic drugs and can be transmitted to humans through contact with livestock.
Researchers used test tube experiments to measure growth rates and DNA mutations of 8 different Pseudomonas bacteria species. They found that populations within the same strain evolved in parallel despite genetic differences.
Researchers found a potent antibiotic and a gene that confers immunity to it in Staphylococcus epidermidis Strain 115. The discovery could lead to large-scale production of the antibiotic, potentially solving the growing antibiotic crisis.
A highly resistant strain of E. coli was associated with an outbreak at a hospital in Illinois, where contaminated duodenoscopes were found to be the source of transmission. The study suggests that current reprocessing methods may not be sufficient to prevent the spread of antimicrobial-resistant organisms.
Researchers have discovered a bacterial mechanism that prevents MRSA from thriving on human skin. By producing toxic compounds, MRSA inhibits its own growth and persistence on the skin.
Researchers discovered bacteria can develop antibiotic resistance through hidden genetic changes, using complex environmental gradients to promote rapid evolution. The findings reveal a diverse arsenal of genetic 'weapons' bacteria can employ to fight antibiotics, making them more versatile and difficult to defeat.
Researchers adapted the Ames test to assess mainstream cigarette smoke's toxicity, showing concentration-dependent mutations in bacteria. The modified test uses multiple bacterial strains and whole-smoke aerosol exposure, providing a more complete picture of the toxic profile.
Researchers found genetically identical bacteria respond differently to sugars, exhibiting a wide range of behaviors. The study highlights the complexity of bacterial behaviors and their response to environmental conditions.
A study published in mBio suggests that the virulent US fish epidemic emerged from an Asian source, with the bacterium Aeromonas hydrophila causing serious infections in catfish. Researchers identified a common ancestor responsible for the virulent strains of A. hydrophila affecting both China and the United States.
Researchers found that fish with a diverse diet had less bacterial diversity in their guts than those with a specialized diet. This discovery could impact the use of probiotics and diet in treating diseases associated with gut bacteria.
Researchers at Princeton University discovered that bacteria curve shape is crucial for flourishing as a group. Curvature helps swarmer cells attach to surfaces, ensuring next generation stays close to nutrients and progenitors. The study highlights the importance of naturalistic settings for studying bacteria.
A comprehensive genomic analysis of Bordetella pertussis bacteria reveals the impact of vaccination on its spread and diversification. The study shows that vaccination has dramatically reduced rates of infection and loss of life from whooping cough, but strategies used to date have not completely eradicated strains of the bacteria.
Research found that a particular strain of Pseudomonas aeruginosa survived in contact lens cleaning solution for over four hours, posing a risk to eye health. The study suggests that standard disinfectant solutions may not be robust enough to kill all bacteria associated with microbial keratitis.
Researchers have found metallopolymers that can evade MRSA's defensive enzymes and destroy its protective walls, causing the bacteria to burst. The metallopolymers mostly left red blood cells alone, suggesting minimal side effects.
Researchers discovered that bacteria use indole to communicate and plan ahead for lean periods, leading to new ways to combat dangerous bacteria. The study could help scientists find new ways to control MRSA and other harmful bacteria.
Researchers at Joint BioEnergy Institute have successfully introduced a pair of genes into E. coli bacteria to confer tolerance to ionic liquids, enhancing the production of terpene-based biofuels. This breakthrough could eliminate a bottleneck in biofuels production and pave the way for more economical fermentation conditions.
Researchers create novel antimicrobial peptides (AMPs) that burst through bacterial cell walls, killing resistant strains. The discovery could lead to new therapies against tuberculosis and other deadly diseases.
A new strain of E. coli bacteria has been engineered to detect and record environmental signals in the mouse gut, remembering what it 'saw' for up to a week. The approach, which uses a genetic switch from a virus, could lead to a radically new screening tool for human gut health and living diagnostics.
Researchers at TUM have developed two new mechanisms of action that can permanently deactivate ClpP proteases, essential for bacterial survival. The newly discovered inhibitors target the protein's structure and function, potentially leading to more effective treatment options.
Researchers at North Carolina State University have developed a novel approach to eliminate specific strains of bacteria using the CRISPR-Cas system. This method has shown promise in lab tests, eliminating targeted bacteria without affecting good bacteria and demonstrating precision in targeting different species.
Researchers identified components of the C. difficile bacteria that can be used to develop a rapid diagnostic test, potentially leading to more timely initiation of antibiotics and improved outcomes for patients. The study's technology can also help quickly detect and identify hypervirulent strains of the bacterium.
Researchers have discovered a new type of bacterium in sponges that produces bioactive substances, including polyketides and peptides. The discovery, published in Nature, sheds light on the complex symbiotic relationships between sponges and bacteria, and could lead to breakthroughs in medical treatment.
Researchers at Princeton University discovered that bacteria like Vibrio cholerae have a system to prevent freeloaders from enjoying the fruit of others' hard work. By producing a thick coating or using natural fluid flow, these microbes deny access to nutrients generated by productive community members.
Researchers at the University of Iowa have developed a new vaccine that targets staph toxins, providing almost complete protection against staph infections. The vaccine was tested in an animal model and found to be effective even against high doses of bacteria.
Researchers have identified diverse strains of Wolbachia bacteria that offer strong antiviral protection against diseases like dengue, but may come with a cost to the host's lifespan. The study found that certain strains replicate more quickly and reach higher concentrations in flies, potentially reducing their lifespan.
In a groundbreaking study, researchers found that benign E. coli bacteria can evolve to become pathogenic within 500 generations or 30 days when confronted with macrophages. The bacteria adapted by developing resistance to being killed by immune cells and acquiring traits similar to those of deadly pathogens.
A new technique uses whole genome sequencing to identify pathogens in patient samples in just 18 hours, allowing for rapid diagnosis and treatment of urinary tract infections. This approach also enables the detection of emerging infections and prevention of hospital-acquired diseases.
Researchers discovered that bacteria that complement each other's nutritional needs grow faster and are more fit than solo individuals. This finding supports the widespread model of cooperation in nature.
Researchers create handheld, battery-operated device that can rapidly identify harmful bacteria like E. coli O157:H7, which causes 2,000 hospitalizations and 60 deaths in the US each year. The device uses dielectrophoresis to sort microbes based on their unique electrical properties.
Researchers from Helmholtz Centre for Infection Research have discovered a new dual-RNA guided enzyme Cas9 that enhances the potential of exploiting bacterial immune systems for genome engineering. The CRISPR-Cas system has been shown to be faster, more precise and cheaper than existing technologies.
Researchers have characterised the coat of a potential poultry probiotic, Lactobacillus johnsonii, which consists of two exopolysaccharides that play important roles in colonisation and adhesion. The unique EPS structures may help the bacteria compete with pathogenic C. perfringens.
A study found that different strains of gut bacteria use mucins in the human gut at varying rates. The ability to break down mucins is linked to specific gene clusters, and these differences can affect which bacteria thrive in the gut. This research may provide new insights into maintaining a healthy gut microbiome.
A new microfluidic device can quickly identify harmless bacteria and those that produce biofilms, which are associated with disease. This breakthrough could enable faster diagnosis and more effective treatment of conditions such as cystic fibrosis.