Articles tagged with Bacterial Pathogens
A single strain of plague bacteria caused the Black Death in Europe and later led to multiple outbreaks on the continent before spreading to China, triggering a global pandemic. The researchers sequenced ancient DNA from mass graves and compared them to modern strains to reveal a link between the Black Death and modern-day epidemics.
Researchers found that fluid shear forces regulate disease progression in multidrug-resistant Salmonella ST313 strains, accelerating disease onset and enhancing survival. The study's findings have significant implications for the development of therapeutics against these deadly bacteria.
Recent research reveals that antibiotic-resistant strains may be fitter and more virulent, complicating the fight against bacterial infections. The discovery challenges the long-held paradigm of a fitness cost associated with antibiotic resistance.
A new vaccine identifies strains by proteins attached to the surface of pneumococcus, promoting an immune response that targets specific threats. The vaccine is 100% effective in defending against more than 12 strains and may one day stamp out pneumonia, meningitis, and other illnesses.
Researchers at Zhejiang University have developed a potential biomarker for bacterial pneumonia using breath analysis. The study found a link between volatile organic compounds in exhaled air and patients diagnosed with bacterial pneumonia.
A study published at the American Society of Clinical Oncology Annual Meeting found bacteria in women's ovaries and fallopian tubes. Women with ovarian cancer have distinct bacterial profiles, suggesting potential links to cancer development or progression.
Researchers have found that tromethamine, a drug approved to treat metabolic acidosis, can raise the pH of the airway surface liquid (ASL) and enhance bacterial killing activity in cystic fibrosis patients. This suggests that tromethamine may be beneficial in treating CF airway disease.
Researchers found that tobacco smoke increases the likelihood of certain bacteria like Porphyromonas gingivalis colonizing the body. Biofilms formed by these pathogens can be difficult to eradicate and promote antibiotic resistance.
David Low's innovative project targets enteric pathogen-specific T2 bacteriophage to combat antibiotic-resistant bacterial infections. The Bill & Melinda Gates Foundation funded $100,000 GCE grant will support his research on a new approach using bacteriophage targeting essential outer membrane protein BamA.
Taxonomer analysis software rapidly identifies pathogens and profiles gene expression, revolutionizing infectious disease diagnosis. This technology can help reduce mortality rates of children in resource-limited settings by quickly detecting treatable infections.
Scientists have identified a novel metal scavenger, staphylopine, produced by the pathogenic bacterium Staphylococcus aureus. This discovery could lead to the development of new antibiotics targeting the bacteria's addiction to metals.
Researchers discovered a bacteriophage virus in Connecticut that targets multi-drug resistant Pseudomonas aeruginosa, making it susceptible to existing antibiotics. This 'phage' therapy has the potential to treat life-threatening infections and preserve medical options against deadly bacteria.
Research at Osaka University reveals Lypd8's role in preventing intestinal bacteria invasion, shedding new light on ulcerative colitis pathogenesis and potential therapeutic targets. The study found that Lypd8 decreases in patients with ulcerative colitis, leading to increased susceptibility to inflammation.
Bacterial spore formation is triggered by the slowdown of cellular growth, according to a new study published in Molecular Systems Biology. The research reveals that stressed-out bacteria make life-or-death decisions to form spores due to the concentration of a key protein, which builds up during starvation.
A team of researchers identified a single enzyme that can independently control ubiquitination, a crucial cellular process. This finding has the potential to lead to the development of new therapeutic targets for diseases, including infection.
Researchers found that low temperatures trigger genes involved in biofilm formation, toxin production, and cold adaptation in Vibrio cholerae. Expression of virulence factors is reduced at low temperatures, suggesting a link to environmental lifecycle.
A new study found that triclosan exposure causes rapid changes in the gut microbiome of zebrafish, compromising its function. This disruption may contribute to disease development or severity.
Researchers have identified a specific gene mutation in Staphylococcus aureus that reduces the bacterium's ability to destroy human immune cells, making it more likely to cause life-threatening diseases. This discovery provides new insights into the complex relationships between bacteria and their hosts.
A study found that pathogenic bacteria use Opa proteins to bind human CEACAM proteins on mucosal cells, making them stickier and less likely to detach. This prevents exfoliation, allowing the bacteria to gain extra time to colonize or penetrate the mucosa.
Scientists have created a synthetic molecule that mimics the sugar coating on C. difficile bacteria, triggering an immune response and protecting against infection. The potential vaccine could be cost-effective and used to boost the immune system in patients.
A new study suggests that statins, commonly used to lower cholesterol, can reduce the burden of infection in Lyme disease reservoir hosts, potentially leading to a decrease in human cases. Researchers hope to modify statins to primarily affect the survival of Lyme disease bacteria.
Researchers at Denver Health have developed a new diagnostic tool to identify multidrug-resistant organisms in combat-related infections, allowing for faster treatment. The test can characterize multiple pathogens within 2 hours, including MRSA, and determine antibiotic susceptibility with high accuracy.
Researchers identified a novel tuberculosis pathogen, Mycobacterium mungi, transmitted through environmental urine and anal gland secretions in banded mongooses. This discovery radically changes the understanding of TB transmission, with implications for wildlife and livestock health.
Antibiotics disrupt gut microbiome communication with the immune system, impairing immune function. New approaches aim to restore balance by targeting infectious bacteria or modifying the microbiota, such as using bacteriocins, CRISPR-CAS9 gene editing, or fecal material transplants
Researchers discovered that genetic mutations in certain genes can impair the immune-enhancing effects of beneficial bacteria, leading to reduced efficacy of probiotic therapies in treating Crohn's disease. The study suggests a new potential cause for the disorder and may lead to advances in personalized medicine.
A UGA study found that Saharan dust increases iron levels in ocean surface water, leading to large blooms of Vibrio bacteria. These bacteria can cause serious illness in humans and other marine organisms, and their rapid growth rate short circuits the theory of phytoplankton as the first responders to nutrient plumes.
A targeted antibiotic, Debio 1452, was found to minimize disruptions to the gut microbiome in mice compared to broad-spectrum antibiotics. The study suggests that pathogen-selective approaches to antibiotic development can help preserve beneficial bacteria and prevent secondary infections.
New research reveals Saharan dust enriches underwater plants in the Caribbean with iron and other nutrients. However, this increase in nutrients also supports an explosive bloom of toxic bacteria such as Vibrio.
A new antibiotic, Debio 1452, shows promise in selectively targeting Staphilococcal pathogens while sparing the gut microbiome. Conventional broad spectrum antibiotics cause significant damage to the gut microbiome.
A Massachusetts General Hospital team has developed a compact system that rapidly diagnoses bacterial infections in under two hours, bringing testing to the point of care. The PAD system uses genetic testing and optical components to identify key pathogens, offering improved diagnosis and treatment options.
New research from the University of Oxford used bacteria to show that acquiring duplicate copies of genes can provide a template for developing new traits. Gene duplication has been proposed as playing a key role in innovation since the 1970s, but these findings add important empirical evidence to support this theory.
Researchers at Wellcome Trust Sanger Institute have catalogued over 130 human intestine bacteria, enabling them to study the microbiome's role in health and disease. The discoveries hold promise for creating tailored treatments with specific beneficial bacteria.
Researchers at Washington State University and Harvard University have discovered a critical mechanism that enables bacteria to efficiently infect the gut. The 'type III secretion system' directs bacterial traffic, controlling whether bacteria become trapped inside vacuoles or break out into cell fluid.
Researchers developed a computer model to explain how antibiotic-resistant microbes develop and spread. The study reveals that even after antibiotic therapy, more bacteria may be sensitive to the effects of antibiotics than resistant ones.
A study found that gut bacteria can predict the risk of life-threatening blood infections following high-dose chemotherapy in cancer patients. The researchers created an algorithm that uses bacterial DNA sequencing to identify good and bad bacteria, predicting infections with around 85% accuracy.
Scientists at UC Riverside discovered a strain of beneficial nitrogen-fixing bacteria that has spread across California, forming tumor-like nodules on plant roots. The epidemic strains were found to be highly successful in the soil and in competition to infect plants, explaining their persistence and dominance.
Researchers discovered that Pseudomonas aeruginosa can multiply within human fluids from burn wounds, leading to increased virulence factors. Exudates from burns contain immune molecules and enzymes that favor P. aeruginosa growth, making it difficult to treat infections.
Researchers discovered Vibrio cholerae attraction to bile taurine, shedding light on its survival and pathogenicity. The finding may lead to prevention of infection and development of new drugs for cholera.
Molecular microbiologists at UMass Amherst identify a distinct domain on the plasma membrane of Mycobacterium smegmatis, crucial for bacterial growth. The discovery provides insight into lipid metabolism and regulatory mechanisms in mycobacteria, potentially leading to new methods of inhibiting bacterial growth.
Researchers at University of Guelph found that soy isoflavones and peptides can effectively inhibit the growth of certain bacterial pathogens, including Listeria and Pseudomonas. This natural alternative could benefit the food industry by reducing reliance on synthetic additives and addressing growing concerns about antibiotic resistance.
Scientists discovered that Cpf1, a CRISPR-associated enzyme, can cut both RNA and DNA. This dual activity enables efficient targeting of multiple sites in parallel, or multiplexing, for sequence-specific genome engineering.
Researchers have mapped the core set of genes that enable strep bacteria to acquire new genes for antibiotic resistance and escape the immune response. The study identifies 83 specific genes in 29 regions of the strep chromosome that are required for DNA uptake.
Researchers develop a new mathematical framework to compare different treatment therapies, including aggressive and moderate approaches. The model considers the role of the host immune system in infection clearance, suggesting that optimized treatments can minimize drug resistance without compromising patient health.
The pandemic E. coli strain H30 causes persistent and deadly infections, often undetected until severe complications arise. Researchers found that patients with underlying conditions and those in healthcare facilities are at higher risk for infection.
Researchers discovered that TB bacteria trick immune cells into building up fat to feed them, rather than destroying them. This finding provides new insights into the mechanisms of TB infection and potential treatment approaches using antisense oligonucleotides.
A researcher at Lehigh University is pioneering a unique approach to treat bacterial infections by targeting outer membrane vesicles, which can deliver toxins to healthy cells. Her work has the potential to develop broad-range antibacterial molecules and improve antibiotic stewardship.
Bacteria's ability to form membrane vesicles and biofilms, crucial for disease-causing abilities and antibiotic resistance, has been linked to explosive cell lysis. The study reveals that a previously unknown enzyme disrupts the cell wall, releasing essential cellular components.
Researchers at Wayne State University are developing novel aminoglycoside antibiotics with reduced toxicity and decreased resistance, aiming to combat multidrug-resistant diseases. The project, led by David Crich, will evaluate synthetic compounds in vitro and animal models for efficacy and antibacterial activity.
Research by Michigan State University found that large-scale swine farms in China and the US are breeding ground for multidrug-resistant bacteria. Partner genes, which can confer resistance to multiple antibiotics, were discovered in Chinese soils and manure, highlighting the need for prudent agricultural antibiotic use.
Research reveals typhoid toxin promotes long-term colonization without disease in infected hosts, reducing intestinal inflammation and altering gut microbiome. Chronic infection was not linked to cancer development, highlighting a novel immune modulating role for the toxin.
Researchers used electron cryotomography to visualize bacterial 'motors' in three dimensions, revealing the complexity of type IVa pilus machine and flagellum structures. The study provides insights into pilus assembly, structure, and function, as well as correlations between motor strength and torque-generating protein complexes.
Research finds that botulism in waterbirds is spread by an invasive species of freshwater snail carrying Clostridium botulinum, which thrives in polluted wetlands. Global warming is expected to exacerbate outbreaks due to increased temperatures and drought.
Researchers propose using 'sticky molecules' like IgA to target good bacteria in the gut, preventing pathogenic species from taking hold. This approach has the potential to reduce inflammation and prevent diseases such as Crohn's and ulcerative colitis.
Researchers at Osel have engineered Lactobacillus jensenii to stably express broadly neutralizing antibody fragments against the HIV-1 virus, offering a cost-effective and long-lasting new barrier to HIV-1 transmission. The engineered bacteria reduced vaginal HIV transmission in a primate animal model by over 63%.
Researchers identified a human enzyme called fibrillarin as crucial for henipavirus infection, suggesting it as a potential therapeutic target. The study's findings have implications for the development of an anti-henipavirus drug, and may also offer broader use against other paramyxoviruses.
A new study reveals that bacteria in biofilm form are stronger than single-celled bacteria and outcompete them for nourishment. This challenges the traditional view of bacterial infections and highlights the importance of treating biofilms as a distinct entity.
A large-scale genomic study found that the Shigella dysenteriae pathogen, responsible for life-threatening bloody diarrhea, originated in Europe. The bacterium was transmitted to other continents via human migration and military operations, leading to devastating epidemics worldwide.
Researchers found that all ticks contained symbiotic bacterial species, while over half were infected with multiple pathogens. The study highlights the importance of accounting for interactions between symbionts and pathogens in tick-borne disease diagnosis and treatment.
Research shows that aging alters antibody responses to oral bacteria, with significant positive correlations observed across the population. Specifically, antibody levels to Porphyromonas gingivalis and Treponema denticola increased with age, while those to Aggregatibacter actinomycetemcomitans did not.
The gut microbiome remains healthy due to functional redundancy among microbe species, which ensure stability in the face of constant disturbance. This study highlights the importance of understanding the role of these bacteria in the human body and their contribution to clinical symptoms.