Articles tagged with Bacterial Strains
Researchers found that travelers to the tropics are exposed to a wide range of superbacteria, including 83 different strains, during their trip. Daily stool samples revealed that all participants contracted superbacteria within the first week abroad, with some carrying multiple strains over time.
A recent study reveals that international travellers are highly susceptible to virulent strains of drug-resistant bacteria, often acquiring multiple types during a single trip. Researchers found that 70% of European volunteers colonised with MDR-GN bacteria, highlighting the need for improved infection control measures.
A single strain of Bacteroides fragilis significantly reduced graft-versus-host disease by protecting gut integrity, according to a proof-of-concept study. The bacteria increased overall gut microbial diversity and reduced donor T cell proliferation, which triggers GVHD.
Researchers found gulls carrying resistant strains of Campylobacter and Salmonella, causing gastroenteritis in humans. The study highlights the importance of wildlife fauna as a reservoir for antibiotic-resistant bacteria, emphasizing the need for a one health approach.
Researchers in Costa Rica have found that some bacteria on amphibian skin can prevent growth of the fungus responsible for mass amphibian die-offs. The study identified a number of bacteria with inhibitory capacity against the pathogenic fungus Batrachochytrium dendrobatidis, which has led to the extinction of 90 species.
Research by Michigan State University finds that livestock workers are at high risk of acquiring antibiotic-resistant bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). The study highlights the importance of good hygiene practices and policies in minimizing the spread of livestock-associated MRSA.
Researchers used CRISPR/Cas9 genome editing to increase formicamycin production in Streptomyces formicae bacteria, which could lead to new antibiotics against MRSA. The over-producing strain can be used to purify enough formicamycins to study their mode of action and development as antibiotics.
Researchers developed new bacterial culture approaches, isolating 254 strains from the Tabernas Desert, including 60% previously unreported and possibly new bacteria species. The study highlights the potential for simple strategies to obtain higher microbial diversity from extreme environments.
Researchers found a gene cluster in Vibrio cholerae that helps the bacteria acquire unique traits needed to become pandemic strains. The discovery sheds light on how environmental strains of V. cholerae evolve into deadly pathogens.
Researchers at UC San Diego found that weaker E.coli strains outcompete stronger ones in a microbial game of rock-paper-scissors, challenging the traditional notion that strength prevails. The study's findings have implications for understanding microbiome imbalances and potentially developing new life-saving treatments.
Researchers found that slower-moving bacteria outcompete faster-moving cells in densely packed groups, allowing them to spread across surfaces. This discovery sheds light on how bacteria spread within the body during infections.
Researchers found that plant-secreted coumarins elicit nutritional assistance from bacterial commensals under iron limitation. Adding synthetic communities of root-associated bacteria improves plant performance on unavailable iron, but not with readily available iron.
A new study reveals that decaying jellyfish blooms fuel the rapid growth of specific strains of seawater bacteria, keeping organic material within the water column food web. This process temporarily alters the food web, with bacteria consuming detritus and providing food for other marine animals.
A strain of oral bacteria has been found to be associated with severe ulcerative colitis. The discovery offers new avenues for research into the prevention and treatment of IBD. Researchers believe that targeting the oral cavity could help reduce the load of the bacteria, potentially leading to new therapies.
Researchers discovered a two-component system in the Butters prophage that blocks entry of some phages, but not others, from attacking a strain of mycobacteria. The study advances phage therapy development and may lead to engineering phage-resistant bacteria.
A recent study provides genetic insights into Bifidobacterium infantis strains, revealing that strain EVC001 has a unique mechanism of action to optimize human milk metabolism and maximize health benefits in infants. The findings suggest that strain selection is crucial for maximizing impact on short- and long-term health outcomes.
The University of Guam is surveying and monitoring invasive pests of solanaceous crops, including Tuta absoluta, a moth that can destroy entire crops, and Ralstonia solanacearum race 3 biovar 2, a bacterial wilt that infects through the roots. The work aims to prepare the island for management if these pests arrive.
Researchers from RUDN University discovered that non-pathogenic Xanthomonas bacteria can acquire virulence genes from other species, making them deadly to plants. The study found that the key factor in pathogenicity is the VirE protein, which was likely borrowed through lateral gene transfer.
Helper bacteria, such as Mycetocola tolaasinivorans, protect white button mushrooms from the bacterial pathogen Pseudomonas tolaasii by enzymatically disabling its toxin and motility. This mechanism involves a lactonase enzyme that linearizes the tolaasin toxin into a non-toxic structure.
Researchers create device to grow highly oxygen-intolerant bacteria in lab studies, revealing protective effects on human colon. They found that Faecalibacterium prausnitzii produces butyrate, which reduces inflammation and calms immune response.
Four simple criteria have been established to accurately use the term 'probiotic': purity, safety, clinical trial support, and maintenance of viability in products. This clarity will provide consumers with better transparency about expected benefits and allow them to make informed choices.
A study by Max Planck Institute researchers found that multicellular clusters can promote cooperative interactions between organisms, leading to a previously unknown mechanism driving the evolution of mutual aid. This discovery challenges the traditional view of evolution as a competition for resources.
Scientists have identified a specific protein mutation in E. coli that increases bacterial virulence, leading to increased resistance to antibiotics and antibacterial substances. The mutation affects the lipopolysaccharide transporter, causing the bacteria to produce more outer membrane vesicles and become more deadly.
A new study found that specific gut bacteria in worms can modify their behavior, directing them to choose certain food sources. The bacteria influence neural circuit activity by producing chemicals like tyramine, which increase tolerance for certain smells.
A new study found that probiotics with top-performing Lactobacillus strains can improve vaginal health and reduce the risk of bacterial vaginosis, a disruption in the optimal microbiota. The research suggests that these strains could lead to better treatment options for this condition.
Researchers discovered that superworms can degrade polystyrene plastic with the aid of a specific strain of bacteria in their gut. The bacteria, Pseudomonas aeruginosa, produce an enzyme called serine hydrolase that breaks down the plastic.
A study published in Cell Reports suggests that lactobacilli have a niche in the human nose and may play a role in preventing chronic nasal and sinus inflammation. Researchers developed a proof-of-concept nasal spray that delivered lactobacillus to the nose, colonizing healthy volunteers' upper respiratory tracts without adverse effects.
A new dataset and diagnostic platform have been developed to help tomato growers detect and prevent bacterial canker, a disease caused by Clavibacter michiganensis. The platform uses genetic regions specific to the pathogen, reducing false positives and making it easier for growers to screen infected plant and seed materials.
Researchers at Texas A&M University have created a dual-action coating that repels and kills bacteria, reducing the risk of cross-contamination in fresh produce. The coating, made from silica and lysozyme, retains its germicidal action longer due to its water-repelling property.
Researchers identified the origin source of lactic acid bacteria responsible for kimchi fermentation, revealing that ingredients such as ginger and red pepper do not contribute to fermentation. The study found three unique fermentative microbes specific to each ingredient, resulting in distinct flavor profiles.
Research at Shinshu University found that green tea consumption increases Flavonifractor plautii bacteria in the gut, leading to a suppressed Th2 immune response to food allergies. This study suggests that drinking green tea may be a potential anti-allergy probiotic.
Researchers identified a strain of bacteria capable of degrading some chemical building blocks of polyurethane, a thermosetting polymer difficult to recycle or destroy. The discovery represents an important step in reusing hard-to-recycle PU products and reducing toxic waste.
Researchers at University of Illinois and Mie University discover salt-loving bacteria secret a peptide that rapidly kills lung cells, leading to acute exacerbation. The finding offers a potential new target for treating pulmonary fibrosis, a disease affecting millions worldwide.
Scientists at Penn State identified key genetic regulators controlling the expression of a vital gene required for luminescent bacteria to compete and form symbiosis with Hawaiian bobtail squids. The findings shed light on molecular mechanisms underlying animal-microbe interactions, which may be applicable to human microbiomes.
Researchers sequenced the genomes of 24 strains of Burkholderia bacteria from the ISS water dispenser and found them highly similar to Earth-based strains. The bacteria are susceptible to common antibiotics, making them treatable in the event of an infection.
The study found good protection against meningococcal disease in vaccinated individuals, but no overall reduction in bacterial carriage. The findings highlight the importance of individual vaccination and identify high-risk behaviors associated with bacterial transmission.
Researchers developed an engineered probiotic that promotes mucosal healing and reduces inflammation in IBD patients. The 'Probiotic Associated Therapeutic Curli Hybrids' (PATCH) approach uses genetically programmed bacteria to create a biocompatible, mucoadhesive coating that facilitates healing.
Researchers discovered a fear-greed tradeoff in bacteria that use ancient respiratory quinones for aerobic respiration, leading to oxidative stress and growth limitations. The study provides fundamental insights into microbial bioenergetics evolution and potential strategies for modulating bacterial growth and survival.
Researchers have found an effective and environmentally sustainable way to block the transmission of dengue virus using a new strain of Wolbachia bacteria. In trials carried out in Malaysia, the strain reduced cases of dengue by 40% and established itself even in hot temperatures.
A new study investigates the dynamics among strains of Aeromonas hydrophila, which can lead to life-threatening infections. Researchers hope that understanding these interactions will enable the development of new therapeutic interventions.
New research reveals that antibiotic-resistant bacteria carry dormant genes that can quickly become active, making them resistant to treatment. This study highlights the complexity of the fight against superbugs and the need for improved screening processes.
Researchers discovered that neutrophils can eliminate MRSA bacteria on human skin, preventing them from invading the body. This finding could help explain why some people are only transient carriers of MRSA.
Researchers discovered a diverse range of bacterial symbionts in deep-sea mussels, with each strain fulfilling different functions and enabling the mussel to adapt quickly to changing environments. This diversity challenges current evolutionary theories and suggests that similar symbionts can coexist.
A new study at the University of Copenhagen reveals that bacteria prioritize cooperation over competition, leading to stronger and more resilient communities. This discovery challenges Darwin's theory of evolution and has significant implications for biotechnology and disease treatment.
Researchers have developed engineered viruses to target specific strains of bacteria, reducing the risk of antibiotic resistance. The new approach could provide a targeted alternative to traditional antibiotics.
MIT researchers developed engineered bacteriophages that can kill different strains of E. coli by making targeted mutations in a viral protein. The new approach creates a large number of phage variants and tests them against resistant strains, showing promise for overcoming multidrug resistance.
A team of researchers discovered that single-celled organisms like protozoa can protect pathogenic bacteria and prime them for human infection. The bacteria are expelled into the environment after being ingested by protozoa and become more infectious in humans, potentially threatening public health.
Researchers found that strains predicted to be more sensitive to T6SS were able to coexist with aggressor strains, challenging the traditional assumption of a 'winner-take-all' result. The study suggests that genetics and environmental factors play a significant role in determining competition outcomes.
Scientists have developed a new metabolic engineering technique that enables cells within microbial consortia to regulate their own composition through autonomous cell-to-cell communication. The approach utilizes the universal QS signal AI-2, allowing for tunable growth rates and improved coordination among subpopulations.
A new strain of group A streptococcus bacteria, M1UK, has been identified as the dominant cause of Strep A infections in England and Wales since 2010. The strain produces more toxin than existing strains, potentially leading to increased cases of invasive infections.
Scientists have identified a new strain of Streptococcus pyogenes causing more serious Strep A infections, including invasive diseases like bloodstream infections. The emm1 clone, M1UK, produces nine times more toxin than other strains, and its increased production may contribute to the severity of these infections.
Researchers developed a single-layer separator using bacterial cellulose nanofiber, achieving 80% capacity retention after 1,000 cycles. The new separator's cycle-life is superior to commercial multilayer separators with a more sustainable manufacturing process.
A comprehensive catalogue of human digestive tract bacteria has been identified, revealing novel interactions and associations between bacterial strains and health outcomes. The study provides a foundation for future research into the mechanisms underlying microbiome dynamics and their impact on human health.
A large-scale study by Kyushu University researchers found that E. coli bacteria from cattle exhibit characteristics similar to those causing human food poisoning. The findings suggest that these bacterial adaptations may help them thrive in a cattle's intestine, leading to the emergence of new, harmful strains.
Researchers at Penn State have discovered that the genomes of luminescent bacteria contain two copies of a gene required for the type VI secretion system (T6SS), which is used to kill neighboring cells. Disabling either copy of the gene still allows the T6SS system to function, but not both, revealing functional redundancy.
A WVU researcher is working to preserve pertussis vaccines' effectiveness by exploring ways to improve their recognition of emerging bacterial strains. By incorporating iron-acquisition proteins into the vaccine, Barbier hopes to boost its protection.
Researchers at UNC School of Medicine find that adding rhamnolipids enhances the potency of aminoglycoside antibiotics against Staph infections, including MRSA. The study suggests a new strategy to overcome antibiotic resistance and has implications for treating various bacterial species.
Scientists at the Wyss Institute successfully manipulated four bacterial strains to exhibit beneficial interactions and balance in complex environments. By modifying their genomes, they encouraged the bacteria to adopt a live-and-let-live approach, promoting resilience and diversity within the consortia.
New research from Dartmouth College uncovers how cholera bacteria change shape to aid short-term survival in nutrient-poor environments. This strategy supports the growth of bacterial communities and allows pathogens to compete effectively.
Researchers engineer bacteria to target CD47 on cancer cells, inducing local inflammation and boosting T cell activation. The therapy leads to complete tumor regression and reduced metastasis in mouse models.