Articles tagged with Bacterial Strains
Researchers at Duke University found that cooperative growth in bacterial colonies can lead to the emergence of 'cheating' bacteria that exploit others. The study demonstrates how environmental pressures can shape the evolution of microbial communities.
Researchers at Harvard University have developed a new antibiotic compound, cresomycin, that effectively targets and kills multiple strains of drug-resistant bacteria. The breakthrough demonstrates improved ability to bind to bacterial ribosomes, overcoming resistance mechanisms.
Researchers use bacteriophages to target and kill drug-resistant bacteria, with a patient experiencing complete resolution of infection after combination therapy. However, immune response may lead to recurrence, highlighting need for further clinical trials.
A new study at the Hebrew University of Jerusalem sheds light on the role of effector AopW1 in host adaptation, providing new perspectives on bacterial fruit blotch. The research highlights differences between strains of Acidovorax citrulli and their impact on melon and watermelon crops.
Researchers at NIAID have successfully created a strain of Coxiella burnetii without the genetic flaw that makes it virulent, enabling safe use in laboratory settings. The new strain, NMII-E, has implications for diagnostic sensitivity and vaccine development.
Researchers analyzed UK and Norway data on antibiotic-resistant bacteria, finding that antibiotic use amplifies the spread, but genetic makeup and environmental pressures are also crucial factors. The study suggests a more nuanced understanding of antibiotic resistance is needed to inform public health interventions.
A new study using Raman spectroscopy has identified Pseudomonas bacteria from turtle skin in just 5-30 minutes, offering a faster alternative to traditional methods. The technique provides detailed information about bacterial chemical structure and holds great potential for future research on other microorganisms.
Researchers discovered that short- and long-range weapons perform differently depending on the competition scenario, with long-range toxins becoming effective at high density and low initial numbers of competing bacteria. This study could help engineer beneficial microorganisms to out-compete pathogenic strains.
A new bacterial species, Hydrogenimonas cancrithermarum, discovered at a deep-sea hydrothermal vent site provides insights into bacterial evolution. The strain represents the first mesophilic sulfur-oxidizing bacterium in its genus, expanding physiological and metabolic characteristics.
Researchers discover biological mechanisms by which Wolbachia bacteria boost fruit fly fertility, with implications for controlling disease-spreading mosquitoes. The study reveals that Wolbachia infection restores fertility in flies with defects, enabling them to produce more offspring.
A new study reveals a multi-drug resistant strain of E.coli, MDR ST131, can outcompete and displace other strains in the human gut. The research provides evidence that certain types of E.coli are more prone to developing antibiotic resistance, posing significant health risks.
Scientists sequenced nearly 600 Klebsiella samples and found two-thirds are K. pneumoniae, with carbapenem-resistant strains confined to clinical settings. Genomic surveillance informs control measures against treatment-resistant infections.
A recent study by the University of Alabama at Birmingham has identified 19 specific Bacteroides vulgatus genes that are linked to early colonization after fecal microbe transplants. These genes are part of a commensal colonization factor complex that promotes stable and resilient colonization in mice, suggesting their potential role i...
Researchers at the University of Sheffield have discovered a genetic scar that enables pneumonia-causing bacteria to become resistant to antibiotics. The study found that mutations in the pde1 gene act as an evolutionary gateway for this resistance, threatening patient treatment and highlighting the need for control measures.
Researchers have discovered a new plasmid in epidemic Vibrio cholerae samples that introduces genes encoding resistance to multiple antibiotics. The finding underscores the importance of genomic surveillance and suggests that the strain's stability poses a concerning factor for future outbreaks.
A new study by the CDI Lab at NIH has assessed the rise of hypervirulent strains of Klebsiella pneumoniae, a deadly bacteria that can cause pneumonia and UTIs. The study found that a vaccine approach could be effective in combating these new strains.
Researchers have found that certain strains of Klebsiella pneumoniae are more likely to survive in blood and serum than others, while neutrophils are less effective at killing them. The study suggests a vaccine approach for prevention/treatment of infections may be feasible.
Researchers have isolated a new strain of marine bacteria, Poriferisphaera hetertotrophicis, that grows faster in nutrient-rich media and multiplies via a budding mechanism. The bacterium releases a chronic virus, phage-ZRK32, which facilitates nitrogen metabolism and increases growth.
Researchers at ETH Zurich found that Salmonella bacteria can thrive together in the gut and share information about antibiotic survival mechanisms through a metabolic strategy. This exchange of critical information enables the spread of antibiotic-resistant genes, highlighting the impact of dietary components on promoting this phenomenon.
Researchers found that genetic variants of the STING gene and bacterial NADase enzyme activity interact to determine disease severity. People with the risk variant of STING have a higher risk of life-threatening conditions, while those with the protective variant are less affected.
Researchers find that Acinetobacter baumannii can achieve significant functional modifications in protein complexes over short evolutionary time spans, particularly in hair-like cell appendages. This diversity may affect the pathogen's interaction with its environment and inform personalized therapies.
A recent study discovered the complex circadian clock mechanisms in soil bacteria Bacillus subtilis, regulating multiple genes and behaviors. The findings have significant implications for industrial applications, human health, and plant science.
A combination of Lactobacillus acidophilus and Lacticaseibacillus rhamnosus strains successfully inhibited the production of superantigens causing toxic shock syndrome. Probiotics may also prevent growth of Staphylococcus aureus, a virulent strain that produces proteins triggering the disease.
Researchers at KAUST have isolated a desert microbial strain that enhances drought resilience in Arabidopsis and alfalfa, promoting water use efficiency without affecting crop yields. The microbes modify epigenetic status of drought stress genes and actively change plant root architecture.
Researchers at Tokyo University of Science successfully synthesized tanzawaic acid B in large amounts, paving the way for new antibiotic development. The breakthrough method could lead to creation of various compounds for pharmaceuticals, including new antibiotic candidates.
Plant microbiomes have the potential to make agriculture more sustainable, but understanding their complex interactions is crucial. Researchers have developed models that use metabolic capabilities of bacteria to predict how these microbial communities compete or cooperate.
A new study by researchers at Baylor College of Medicine found that an orally administered probiotic bacterial strain improved dry eye disease in an animal model. The probiotic, Limosilactobacillus reuteri DSM17938, enhanced corneal health and increased goblet cell production in the eyes, suggesting potential treatment benefits.
Researchers discovered three 4,000-year-old cases of Yersinia pestis in human remains from mass burials in Somerset and Cumbria. The findings indicate the plague may have been easily transmitted across Britain, contradicting previous assumptions that it was brought by fleas.
A recent study has identified the specific gut bacteria that pose a threat to neonatal babies, particularly those with necrotising enterocolitis. Researchers analyzed genomic similarities in Clostridium perfringens and found a set of strains with lower disease-causing capacity, lacking genes responsible for toxin production.
A novel method combines biosensors and microfluidics to quickly identify mutant bacterial strains that produce industrially useful proteins. The approach enables the extraction of high-performing strains in a fraction of the time required by traditional methods.
Researchers have identified microorganisms in the Alpine and Arctic regions capable of degrading biodegradable plastics at 15°C, including polyethylene, polyester-polyurethane, and polybutylene adipate terephthalate. The discovery could reduce costs and environmental burden associated with enzymatic recycling processes.
A study published in The Lancet Regional Health - Western Pacific found that carbapenem-resistant Acinetobacter baumannii (CRAB) contaminated the entire ICU, with samples detected on bed units, ventilators, and equipment. The researchers highlight the urgent need for targeted infection prevention and control measures to stem the global...
A study by University of Helsinki researchers identifies specific Desulfovibrio bacterial strains as a primary cause of Parkinson's disease in most cases. The findings suggest that these bacteria can trigger aggregation of the alpha-synuclein protein, potentially leading to disease progression.
Researchers from NUS Medicine discovered that specific CPS structures and sugar combinations help Streptococcus pneumoniae colonize the human respiratory tract. The study sheds light on the importance of CPS structure in bacterial survival, which will inform future vaccine development.
Researchers tracked the evolution of Staphylococcus aureus in patients with eczema, discovering rapid mutations in a gene that enables the bacteria to grow faster on the skin. These findings could lead to targeted treatments by targeting variants of S. aureus associated with eczema symptoms.
A study found that mutant strains of Salmonella cause more severe infections in commercial poultry than wild-type bacteria. The deletion of genes ttrA and pduA led to increased immune response and pathogenicity, emphasizing the importance of animal health measures and proper food conservation.
Researchers have identified a probiotic that can protect Caribbean corals from stony coral tissue loss disease (SCTLD), a deadly and rapidly spreading affliction. The probiotic treatment has been shown to stop or slow the progression of the disease in infected coral fragments, offering an antibiotic-free alternative.
The study found that antibiotics slow down biofilm growth and QS molecule production across both strains, with surface type having a significant effect on the non-mucoid strain. The patterned structure was associated with longer latencies before expression of QS molecules were at their peak.
The study reveals that more than 70% of patients developed urinary tract infections caused by endogenous E. coli strains from their own gut microbiota. The researchers also found that non-lactose-fermenting E. coli strains, less common in other countries, were present in the gut microbiota of some patients.
Researchers developed synthetic peptide nanonets that selectively entrap bacteria, rendering them vulnerable to antimicrobial components. The nanonets displayed both trapping and killing functionalities, demonstrating potential as an anti-infective strategy.
Researchers at Aarhus University have found an enzyme, C-P lyase, in E. coli bacteria that can degrade highly stable chemicals, including pesticides like RoundUp. The enzyme uses energy from ATP to open and close a 'nutcracker' mechanism that traps and breaks down troublesome chemicals.
Researchers at the University of Montreal Hospital Research Centre identified two bacterial strains that can either increase or decrease the risk of intestinal leakage after surgery. Modifying patients' gut microbiota before surgery may reduce postoperative complications and improve recovery.
A study by researchers at TUM found that gut bacteria play a crucial role in liver regeneration. The microbiome produces short-chain fatty acids, which are essential for liver cell growth and division. In mice treated with antibiotics, liver regeneration was delayed or not possible, but a
Researchers identified two Blastocystis strains, ST4 and ST7, with contrasting effects on the gut microbiome, promoting or disrupting a healthy balance. The study's findings suggest that geographical prevalence may influence the strain's impact on intestinal disease.
A new study found that E. coli K-12 has accumulated numerous genetic changes compared to its original isolated bacteria, making it less suitable as a model organism. This discovery highlights the rapid evolution of bacterial genomes and challenges the long-standing use of a single strain in research.
A study published by Ruhr-University Bochum found a significant increase in multidrug-resistant Klebsiella pneumoniae in German hospitals since the Ukraine war. Patients from Ukraine are at risk and should be screened prior to hospital admission, researchers recommend.
Researchers analyzed how immunological memory gets generated and maintained to understand its role in cancer and inflammatory diseases. They found that increased inflammation can actually reduce immunological memory, highlighting the need for regulation.
Researchers have isolated two new bacterial species from patients with inflammatory bowel disease (IBD), which break down the protective mucus layer of the gut. The bacteria, Allobaculum mucilyticum and Allobaculum fili, are highly efficient at degrading intestinal mucus, leading to potent immune responses.
A recent study published in Nature Communications has found a significant imbalance in the gut microbiome of individuals with Parkinson's disease. The researchers discovered that over 30% of micro-organisms and bacterial genes tested had altered abundances, indicating a widespread imbalance in the microbiome.
A new Legionella species, Legionella bononiensis, has been identified in a hotel facility in northern Italy. The discovery was made by researchers from the University of Bologna using genetic sequencing and mass spectroscopy techniques.
A recent study discovered a legume locus that stimulates promiscuous interaction with soil bacteria, forming nitrogen-fixing nodules with up to 30 different rhizobial strains. This finding opens the door for crop improvement by naturally promoting plant growth through symbiotic associations.
A study finds that microbial communities can rapidly respond to temperature fluctuations by re-activating latent species adapted to thrive at different temperatures. This 'species sorting' mechanism allows communities to survive in response to changing environmental conditions.
Researchers at Harvard University developed a Human Vagina Chip to study the effects of microbiome on vaginal health. The chip replicated the human vaginal tissue microenvironment, including its microbiome, and showed that certain strains of bacteria can help maintain an acidic environment and reduce inflammation.
A recent study found that superbugs in the environment rarely transmit to humans, contrary to previous fears. The researchers discovered high levels of antimicrobial-resistant bacteria in livestock, pets, and environmental samples, but surprisingly little overlap between hospital and environmental strains.
Researchers have found that hypermucoviscous K pneumoniae strains carry higher rates of virulence genes and are less responsive to conventional drugs. These strains are thicker and stickier than previous strains, making them more challenging to treat with antibiotics.
A new treatment option for multi-resistant bacteria has been identified by a UNIGE team, which uses the drug edoxudine to weaken the defence mechanisms of Klebsiella pneumoniae, making it easier to eliminate. This approach could be a game-changer in the fight against antibiotic resistance.
Researchers developed a 'clean-label' method to minimize spoilage problems in fresh pasta, adding 30 days to its shelf life. The technique uses modified atmosphere packaging and bioprotective probiotic cultures to control microbial growth.
A large listeriosis outbreak in southern Spain was linked to contaminated stuffed pork, which led to a public health alert and the implementation of post-exposure prophylaxis for pregnant women. The outbreak resulted in 207 confirmed cases and five miscarriages, highlighting the risk of Listeria contamination in ready-to-eat foods.
Scientists at the University of Bath have discovered a novel polyamine that destroys MRSA superbug Staphylococcus aureus by disrupting its cell membrane, rendering it susceptible to antibiotics. The compound is also effective against biofilm and has shown promise as a potential new treatment option for antibiotic-resistant infections.
Researchers at KAUST have identified thermophilic bacteria with potential to degrade oil contamination. The study reveals that certain bacteria can secrete surfactants and absorb emulsified petroleum into their cells for degradation via enzymatic activity.