Articles tagged with Bacterial Pathogens
Researchers have identified a new family of bacteria, Deianiraeaceae, which belongs to the order Rickettsiales and exhibits a unique extracellular lifestyle as a predator. This discovery reveals a significant departure from previously known intracellular parasites.
Researchers have developed a mutant version of the RhlR quorum-sensing receptor, which does not require an autoinducer to function. This discovery provides new insights into cell-cell communication and virulence in Pseudomonas aeruginosa, a globally important pathogen.
Researchers found that the LUX gene regulates stomata opening and closing, as well as activating defense mechanisms. The study could lead to more resistant crops and better treatment for human diseases.
Researchers discovered a grappling hook-like appendage called type IV pili that enables Vibrio cholerae to take up DNA, bind to nutrient-rich surfaces and recognize 'family' members. The findings reveal a multifunctional toolkit for the bacterium's survival in ocean environments.
Princeton researchers found that learned avoidance behavior in C. elegans can be inherited for multiple generations through the germline, with the behavior remaining elevated for up to four generations before returning to normal levels. This study provides new insights into transgenerational epigenetic inheritance and its potential rol...
Researchers discovered a new class of antibiotics produced by the microbiome that kill bacteria by disrupting their energy metabolism. Fibupeptides, such as lugdunin, have shown promise in treating multidrug-resistant infections, including those caused by MRSA.
Researchers have discovered a molecule called LL-37 that changes cell behavior when infected with bacteria, triggering the production of neutrophils to destroy bacterial threats. The study's findings could lead to new approaches in treating multi-drug resistant infections.
Researchers at Virginia Commonwealth University have discovered that certain antidepressants, known as FIASMAs, can halt the growth or kill four different intracellular bacterial pathogens. These drugs target cholesterol trafficking in cells, bypassing direct bacterial targeting and potentially providing an alternative to antibiotics.
Deer keds, a type of parasite fly that occasionally bites humans, have been found in more locations than previously thought, according to Penn State researchers. The team mapped their distribution across North America, documenting new state and county records, and warned that they may transmit disease-causing bacteria.
Researchers discovered that Rqc2 marks protein fragments with a flag, allowing proteases to cut up bad fragments. The study sheds light on the ancient mechanism used by bacteria to recycle incomplete proteins, which has implications for understanding life's origins and developing new treatments for diseases.
Researchers at Rockefeller University developed small molecules that inhibit cGAS, an enzyme implicated in misguided immune responses. These compounds could lead to new treatments for people with certain autoimmune disorders and shed light on autoimmunity.
A new genetic engineering approach removes a specific component of human-made DNA to make it invisible to bacterial defenses, allowing for more efficient and time-saving gene editing. This breakthrough enables researchers to engineer clinically relevant bacteria with reduced resources and increased flexibility.
A new study has found that cranberry extract makes bacteria more sensitive to antibiotics, reducing resistance and allowing for lower doses to be effective. This breakthrough could help combat the growing threat of antibiotic resistance.
Using paper stickers to collect pathogens is more effective and less expensive than swabbing for monitoring in food processing plants. Researchers found that stickers can trap both bacterial and dead pathogens, providing a record of contamination over several weeks.
Under hypoxic conditions, fewer metabolites are produced in the citric acid cycle, reducing bacterial reproduction in macrophages. This discovery provides a new method for pathogen control that doesn't rely on oxygen levels.
Dr. Ana Rita Brochado's research focuses on gram-negative bacteria, which are difficult to treat due to their complex cellular envelope. Her work has shown that certain bacterial strains can be effectively combated using antibiotic combinations and food compounds, like vanillin.
Researchers discovered that previously drug-sensitive bacteria can survive exposure to antibiotics long enough to express resistance genes, rendering them immune. The mechanisms underlying this process involve a drug-jettisoning pump and horizontal gene transfer mechanisms like bacterial conjugation.
A Finnish study proves that 79% of thrombus aspirates from stroke patients contain DNA from oral pathogens. This research highlights the importance of oral health and good dental hygiene in preventing serious health damage.
A new study finds that extracts from three Civil War-era plants have antimicrobial activity against multi-drug resistant bacteria, which were commonly used in treating wound infections. The research suggests these plant-based remedies may have saved limbs and lives during the war.
A new study reveals that restoring degraded landscapes to biodiverse ecosystems favors more stable and specialist bacteria over opportunistic ones. This shift in bacterial composition has potential immune-boosting effects, suggesting a connection between healthy ecosystems and human health.
Researchers have created a system that can systematically rewire two-component systems in bacteria, allowing them to identify the function of an unknown sensor. This technology has wide-ranging implications for medical diagnostics, pathogen study and environmental monitoring.
Researchers at Caltech have unveiled the 3D molecular architecture of Legionella pneumophila's Type IV secretion system, a sophisticated machinery used by dangerous pathogens to infect human cells. The discovery could enable the development of precisely targeted antibiotics to combat diseases like Legionnaires' disease and whooping cough.
A recent study has found that endosymbionts in amoebae significantly influence the proliferation and spread of Legionella pneumophila. The researchers discovered that these bacteria weaken the infectivity of Legionella by competing for nutrients, ultimately leading to slower multiplication and reduced virulence.
A study published in mSystems found that stress caused changes in intestinal bacteria that stimulated immune cells, increasing the likelihood of an autoimmune attack. The researchers also identified specific bacterial species and genes associated with autoimmunity.
Researchers at Princeton University have engineered Pseudomonas bacteria to sense the speed of flowing fluids, which can be used as a flow sensor. The bacteria's genetic response is tuned to the speed, allowing it to detect and measure fluid flow in real-time.
A new study reveals that several species of bacteria reside in bladder tissue of postmenopausal women who experience recurrent urinary tract infections. The findings provide a better understanding of the interaction between bacteria and host tissue, which may lead to more effective treatment strategies for this chronic condition.
A recent study from UT Southwestern Medical Center reveals that several species of bacteria can invade the bladder walls in postmenopausal women with urinary tract infections. The findings suggest that antibiotic treatment may not be effective due to high levels of bacterial resistance and a lack of targeted therapies.
A joint study reveals that plants utilize their root-derived chemicals to shape and maintain diverse microbial communities. The findings provide a gateway to engineering plant root microbiota in major crops, potentially leading to improved productivity and sustainability.
Researchers at Cornell University have identified a new stealthy, jumping gene called mcr-9, which resists the world's last-resort antibiotic colistin, threatening global health. The discovery enables early detection and isolation of resistant bacteria in hospitals and food products.
Researchers developed a microchannel trapping device to detect bacteria in patient samples quickly, reducing testing time from days to minutes. The device can classify bacteria into three main shapes and identify antimicrobial susceptibility directly from clinical samples.
Researchers discovered that H. pylori exploit a specialized niche within gastric glands to maintain stable bacterial reservoirs. This allows the bacteria to serve as stable populations and prevents incoming bacteria from establishing themselves.
Researchers at the University of Sheffield have discovered a mechanism used by bacteria E. faecalis to hide from the immune system, paving the way for new treatments. The study found that the bacteria modifies its cell surface to evade recognition by host immune cells.
Researchers from La Trobe University and the University of Queensland discovered how UpaB protein in bacteria sticks to human body parts, enabling new anti-microbial development opportunities. The study provides fundamental science that could inform future solutions to the global problem of antibiotic resistance.
A team of scientists, led by microbiologist Marjon de Vos, conducted a review to explore the application of evolutionary theory in clinical microbiology. By analyzing microbial communities and genetic data, they identified potential solutions for treating cystic fibrosis patients and limiting the spread of antibiotic resistance.
Researchers describe violacein's mechanism of action against bacteria, including its ability to kill drug-resistant pathogens and disrupt membrane organization. The study's findings suggest violacein's potential as a target for future antimicrobial research.
Three Rochester Prep High School seniors, working in the RIT Genomics Lab, isolated and genetically sequenced a Yimella bacterium that produces antibiotic compounds against Escherichia coli and Bacillus subtilis. The discovery is significant in addressing antibiotic resistance, a growing concern worldwide.
Researchers developed a dispersion method to effectively kill biofilm bacteria by depleting pyruvate, making resident bacteria susceptible to antibiotics. The method showed improved treatment of infected wounds and enhanced efficacy of conventional antibiotic therapy.
Researchers at ETH Zurich discovered that bacteria in a microfluidic T-maze exhibit diverse chemotactic sensitivity due to genetic variations, allowing some individuals to outperform others. This phenotypic heterogeneity may provide an evolutionary advantage for the bacteria, enabling them to adapt to changing environments.
Researchers analyzed over 850 drug-resistant E. coli genomes to identify survival strategies, finding that clones use niche separation and NFDS to evolve and succeed in the host environment. The study's findings highlight the importance of understanding bacterial ecology to develop effective prevention methods.
Researchers tested spore-forming bacteria on antimicrobial paint surfaces and found that most died, but a few strains, like Bacillus timonensis, survived. This raises concerns about the effectiveness of these paints and potential risks to human health.
A new variety of zebra chip disease has been identified in potatoes grown in the Klamath Basin of southwestern Oregon, posing a significant threat to local potato production. The disease, caused by Candidatus Liberibacter solanacearum, can result in yield losses of up to 100% and economic damage estimated at millions annually.
Researchers found that specific strains of Staphylococcus aureus delay healing and that some bacteria can even improve wound outcomes. Monitoring microbiomes may help doctors tailor treatments to enhance healing and prevent amputations.
Researchers at Emory University found that Ginkgo seed extracts inhibit the growth of skin pathogens like Cutibacterium acnes, Staphylococcus aureus, and Streptococcus pyogenes. The study suggests ginkgo seeds could be used as a topical antimicrobial treatment for skin disorders.
Researchers at the University of Sydney developed a method to predict salmonella outbreaks and found that future epidemics are likely to be more severe. The study suggests that genetic networks of salmonella pathogens are linked through just a few degrees of separation, indicating an increasing severity of future epidemics.
Researchers at Florida International University have discovered a new broad-spectrum antibiotic, arsinothricin, which is the first natural product containing arsenic to be found effective against various bacteria. The compound has shown promise in treating infections caused by E. coli and carbapenem-resistant Enterobacter cloacae.
A new study identifies a particular bacterial genus, Brevibacterium, and its genetic pathways that likely govern histamine degradation. The research suggests harnessing strains that break down histamine to reduce allergy-like reactions in people who are susceptible to histamine reactions when consuming ripened cheese.
Scientists have created a genetically engineered bacterium that can specifically kill multiple antibiotic-resistant bacteria without harming beneficial bacteria. The novel tool, based on the CRISPR-Cas9 system, has shown a minimal rate of emergence of new resistance and has potential applications in treating infectious diseases.
A new study suggests that a simplified three-step hand rub technique for 15 seconds is as effective as the six-step, 30-second technique recommended by WHO. This could improve hand hygiene compliance among healthcare workers. The study found that shorter application times do not compromise bacterial reduction.
A new study reveals that petting zoos can harbor highly virulent, drug-resistant bacteria that can be transmitted to visitors, mostly children. The study found that animals in petting zoos are a potential source of shedding these pathogens, which can cause serious illnesses.
Researchers at Technical University of Munich discovered that plant cells recognize bacteria through small fatty acid molecules, rather than complex molecular compounds. This finding could lead to breeding or genetically engineering plants with improved immune responses and increased resistance to pathogens.
A new study reveals how Salmonella bacteria flip an electric switch within immune cells, causing them to migrate out of the gut and into the bloodstream. This mechanism contributes to the severity of food-borne illnesses, with over 400,000 deaths worldwide each year.
Researchers found that three closely related species of bacteria outlived other oral bacteria in a 'doomsday' experiment, surviving for over 100 days without nutrients. The discovery sheds light on how certain pathogens persist in hospital environments and can cause infections.
Researchers found evidence of gum bacteria in brain samples from people with Alzheimer's disease, suggesting a link between the two conditions. A study using mice showed that the bacterium can migrate from the mouth to the brain, and an experimental drug is currently being tested for its potential to treat Alzheimer's.
Researchers isolated cyphomycin from leafcutting ant microbiota, killing fungi resistant to existing drugs. The compound was tested against Aspergillus fumigatus and Candida species, showing promise as a novel antibiotic
Researchers have identified a fungal compound that may inhibit the causative bacteria of citrus greening disease, which has reduced juice orange yields by half in the last 15 years. The compound, radicinin, was isolated and purified from a fungus that inhibits the growth of the bacteria.
Scientists found that certain antibiotics trigger the generation of toxic molecules called reactive oxygen species (ROS), which can lead to new mutations and antibiotic resistance. ROS-reducing drugs like edaravone can prevent these mutations, suggesting a potential new strategy to combat resistance evolution
Researchers studied viruses that infect pathogenic bacteria called bacteriophages to develop a vaccine against bacterial infection. They found that some bacteriophages induce an anti-viral response in humans, which can hinder the clearance of bacterial infections.
Researchers have identified bacteria with promising antibiotic activity against known pathogens in the protective mucus that coats young fish. The study found five bacterial extracts strongly inhibited methicillin-resistant S. aureus and three inhibited Candida albicans, a fungus pathogenic to humans.
University of Arizona immunobiologist Michael Johnson is using a $1.9 million grant to explore copper's potential as an antibiotic. He hopes to create therapeutics that target the copper-sensing protein CopY, which helps bacteria fight off copper stress.
Researchers develop drugs targeting specific component of folate pathway, potentially addressing drug resistance and treatment time. The compounds are more effective than existing antifolate medication PAS, offering hope for new treatment options.