Articles tagged with Bacterial Pathogens
Researchers have discovered a novel signaling pathway critical to the immune response of cells associated with allergic asthma. Increasing cAMP levels inhibited the cells' inflammatory response, suggesting a potential target for new therapies.
A broadly neutralizing cross-reactive antibody targets multiple virulence factors of Staphylococcus aureus, including alpha-hemolysin. The antibody shows high protective efficacy in animal models and is being developed as Arsanis' ASN100 product candidate.
Researchers have discovered that hoophoe birds cover their eggs with a secretion containing beneficial bacteria that increase successful hatching rates. The bacteria produce antimicrobial compounds that protect the embryo from pathogens and facilitate its development.
Researchers at Northeastern University have discovered a novel antibiotic called teixobactin that eliminates pathogens without developing detectable resistance. This breakthrough presents a promising new opportunity to treat chronic infections caused by staphylococcus aureus and tuberculosis, two highly resistant bacterial strains.
Research shows that defensins can disable bacterial toxins by binding to specific locations on these proteins, triggering misfolding. This discovery offers a promising model for developing drugs that could mimic the activity of defensins and reduce pathogens' infectious power.
Researchers have identified distinct gene pathways altered by infection and diet in vascular tissue, suggesting future therapies may need to be tailored. This discovery sheds light on the complex development of atherosclerosis and its association with infections like Porphyromonas gingivalis and Chlamydia pneumoniae.
A team of scientists led by UC Riverside expert Richard Vetter analyzed spider bite data to conclude that the evidence for spider-vectored infections is scarce. The study found that bacterial infections are often misattributed to spider bites, and spiders should not be blamed for human skin infections.
The cholera bacterium uses a tiny spear to stab and kill neighboring bacteria, then steals their DNA through horizontal gene transfer. This mechanism allows the bacterium to become more resistant to threats, including antibiotics.
Fat cells in the skin produce antimicrobial peptides that help protect against bacterial infections, contradicting previous assumptions about the immune response. The study's findings suggest that these peptides can provide a crucial first line of defense against infection.
A study found that leafy greens can be contaminated with E. coli O157:H7 up to 180m away from a cattle feedlot, highlighting the need for revised buffer zone guidelines. The research suggests that airborne transport of bacteria can contribute to contamination, particularly in dry and dusty conditions.
Researchers found that endogenous retroviruses play a critical role in the body's immune defense against common bacterial and viral pathogens. The ERV DNA can activate B cells to produce protective antibodies, suggesting that these viruses have an 'physiological' function.
Researchers investigated how Pseudomonas aeruginosa bacteria swarm in groups containing millions of cells. They found that appendages called 'pili' link together to alter group motion and give swarming groups braking power, helping them avoid toxins.
Researchers explore how bacteria survive destruction from antimicrobial peptides and uncover a strategy that can be disabled. A two-component system helps bacteria remove antimicrobial peptides, blocking their bactericidal effect.
A study published in Science highlights the importance of nutritional immunity in fighting infectious diseases. The research reveals that humans have developed a defense mechanism to starve bacteria by hiding circulating iron, but pathogens have adapted to steal this resource.
A Danish research team has gained a new understanding of the diarrhea-causing bacteria, ETEC, and is exploring its potential for developing an entirely new class of vaccines. The research aims to create a vaccine that can activate the immune system to recognize the agent as foreign and destroy it.
Researchers at UT Southwestern Medical Center found that enterohemorrhagic E. coli (EHEC) uses Bacteroides thetaiotaomicron to worsen its own infection by stealing scarce resources from other gut bacteria. This discovery opens up new avenues for understanding how microbiota composition impacts infection outcomes.
Researchers at Brown University have developed a new strategy to combat antibiotic-resistant bacteria by using molecular decoys. By administering fragments of antimicrobial agents alongside the full compounds, the researchers were able to increase their effectiveness against efflux pumps that stand guard along bacterial cell membranes.
A team of scientists has created a synthetic surface that can control the adhesion of E. coli bacteria using light. By switching on and off specific wavelengths, researchers can reverseorientate carbohydrate structures to influence bacterial bonding.
Microbial succession in restrooms begins with gut and vaginal bacteria, followed by skin and outdoor microbes. Skin and outdoor taxa comprise most of the cultured communities, suggesting restrooms are not significantly unhealthy or healthy.
Scientists have discovered that animals, including ticks and mites, have stolen bacterial toxin genes to defend against microbial infections. The transfer of these genes has been found in various animal species, including the deer tick, which can transmit Lyme disease.
Researchers found that blocking angiogenesis can reduce bacterial numbers, limit their spread and increase survival rates in infected lab animals. The study suggests a potential new therapeutic approach targeting the body's response to tuberculosis rather than directly attacking the bacteria.
Research found that Pseudomonas aeruginosa uses a sense of touch to detect hosts, allowing it to initiate infection without relying on chemical signals. The bacteria's ability to infect is linked to the PilY1 protein, which can be targeted for treatment.
Researchers found that bacterial infections due to Staphylococcus aureus aggravate neurodermatitis by triggering the formation of myeloid-derived suppressor cells, which suppress both harmful and beneficial immune responses in the skin. This can lead to chronic inflammation, itching, and social stigmatization in patients.
Researchers used whole genome sequencing to track and control an Acinetobacter baumannii outbreak at Queen Elizabeth Hospital Birmingham, identifying transmission hotspots and implementing new decontamination protocols. The study demonstrates the effectiveness of real-time genome sequencing in controlling hospital outbreaks.
Scientists have identified three proteins - GapA, CrmA and Mgc2 - essential for the gliding mechanism of Mycoplasma gallisepticum. This discovery could lead to developing a vaccine by targeting non-motile, non-pathogenic bacteria.
A recent report reveals that Vibrio coralliilyticus is not only more widespread and deadly than previously believed but also infects various fish, shellfish, and oysters, including rainbow trout and larval brine shrimp. Researchers have developed a rapid diagnostic assay for this bacteria to assess problems in oyster and coral health.
The Carnegie Institution has received Phase II Grand Challenges Explorations funding to develop a transformative strategy for controlling rice blight, a major challenge to food security. The project aims to achieve broad, durable resistance to the disease and apply its findings to existing rice breeding initiatives.
The UCI team has created a new technology called Integrated Comprehensive Droplet Digital Detection (IC 3D) that can detect bacterial invaders in blood samples with unprecedented speed and accuracy. In as little as 90 minutes, IC 3D can identify bacteria at single-cell sensitivity without the need for cell culture.
Researchers found that salivary mucin MUC5B limits biofilm formation by keeping S. mutans suspended in the liquid medium, preventing cavities. Boosting native defenses may be a better way to fight dental caries than relying on exogenous materials.
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 from RIKEN found that a subtle change in the Lon enzyme allows bacteria to quickly adapt between low-oxygen gut environments and high-oxygen outside conditions. This discovery could lead to new therapeutic targets for enteric diseases.
A new UCSB study reveals that a fungal pathogen in amphibians disrupts the skin microbiome, leading to dramatic changes in bacterial communities. The research has significant implications for understanding infectious disease dynamics and developing responses to diseases causing amphibian extinction.
Researchers at ETH Zurich have discovered a new agent in fungi that kills bacteria, known as copsin, which has the same effect as traditional antibiotics but belongs to a different class of biochemical substances. The substance was found in the common inky cap mushroom Coprinopsis cinerea and is responsible for its antibiotic effect.
Researchers have found that bats carry the bacterial species Bartonella mayotimonensis, which causes deadly human infections in the USA. Bats are ideal reservoirs for pathogenic viruses and play a vital role in natural ecosystems.
A study found that a gut bacterium, Csp_P, can reduce infection of mosquitoes by malaria parasites and dengue virus. The bacterium directly inhibits these pathogens in test tubes and shortens the life span of mosquitoes that transmit both diseases.
Researchers have developed a system to detect and monitor dangerous Gram-negative bacteria in real-time using PET scans. The approach uses a chemical tracer that selectively tags specific types of bacteria, providing rapid feedback on how they respond to antibiotics.
Researchers found that antibiotics can exacerbate Salmonella infection in mice, turning non-superspreaders into superspreaders. The study highlights concerns about the routine use of sub-therapeutic doses of antibiotics in livestock.
Antibiotic-resistant staph bacteria can exchange nutrients with each other and even with normal microbes to increase virulence during an infection. This challenges existing dogma on infectious diseases and may inform new treatment strategies.
Scientists identify tannic acid as a potential treatment for bacterial lung infections in cystic fibrosis patients, counteracting the harmful effects of the Staphylococcus aureus enzyme SMaseC. The discovery suggests that tannic acid may improve therapeutic outcomes for CF patients.
Researchers at The University of Nottingham have shed new light on the interaction between two proteins, laminin receptor (LAMR1) and galectin-3, and the human pathogen Neisseria meningitidis. This study provides critical components that cause the formation of pairs of molecules targeted by the bacterium.
A new study reviewing nearly 70 antimicrobial resistance studies suggests that aggressive treatment may not always be the best way to prevent resistant pathogens. The review found that varying drug dosages and treatment durations may affect resistance emergence, and moderate treatment could be a more effective strategy for some diseases.
Researchers found that MRSA biofilms form in joint fluid, making infections resistant to antibiotics. Pre-treatment with an enzyme can inhibit biofilm formation and increase bacterial susceptibility to antibiotics.
A new genetic test developed by scientists can detect canine fecal contamination in water, providing insights into the scale of the problem. The test identified 11 genetic markers common to most dog samples but absent from human ones, revealing the significant role dogs play in contaminating US waterways.
Sick mice produce specialized sugars to feed their gut microbiota and resist infection. Healthy recovery requires both L-fucose production and intact gut microbiota. The study suggests a potential role for L-fucose in preventing or tolerating Crohn's disease.
Researchers discover six unique states of pneumococcus bacteria, which can help develop tailored vaccines. The study found that each state has distinct DNA methylation patterns and alters gene expression, virulence, and disease severity.
Researchers found that plant seeds can be pre-colonized with beneficial bacteria, providing enhanced microbial protection. This discovery has significant implications for creating food-safe antimicrobials and understanding the importance of early colonization in establishing a healthy microbiome.
A research team from George Washington University has developed a new method for diagnosing pneumonia that uses DNA sequencing to identify bacterial pathogens. This approach could lead to more targeted and effective treatment, reducing healthcare costs and improving patient outcomes.
Researchers found that critically ill ICU patients lose almost all of their gut microbes and those left are mostly pathogenic, leading to life-threatening sepsis. The study suggests that minimizing antibiotic use and stabilizing remaining microbes could improve patient outcomes.
Researchers discovered that Streptococcus pneumoniae, the cause of most cases of bacterial pneumonia, can invade the heart and cause death of heart muscle cells. The study found that the pneumolysin toxin is responsible for this damage, and that an experimental vaccine formulation protected mice against cardiac invasion and heart damage.
Researchers at Duke Medicine and Duke-NUS Graduate Medical School Singapore detail how Yersinia pestis bacteria hitchhike on immune cells in lymph nodes to spread the bubonic plague. New therapies that block host immune function show promise in preventing infection and improving survival.
Researchers at the University of Cambridge used a new technique to study the immune response to live Salmonella vaccines, finding they enhance the ability to prevent bacterial replication and spread. This is crucial for preventing conditions like bacteraemia, a major killer in Africa.
Pathogens specifically target highly networked proteins with multiple functions to weaken their host. The plant model Arabidopsis thaliana shows that different pathogens attack the same proteins, suggesting a convergent targeting strategy.
A recent study published in Proceedings of the National Academy of Sciences reveals a vast array of bacteria living on tropical tree leaves, including over 400 species found on a single tree. The discovery has significant implications for understanding forest health, disease resistance, and the impact of climate change.
Research reveals that 57 Panamanian tree species have distinct bacterial communities on their leaves, with some bacteria linked to nitrogen fixing and methane consumption. The study provides a comparable understanding of the host attributes that explain patterns of microbial diversity in the plant microbiome.
Researchers at VIB/VUB have created a detailed three-dimensional image of the pores through which curli building blocks cross the bacterial cell wall, shedding light on biofilm formation. This breakthrough could lead to the development of small molecules that inhibit unwanted biofilm growth and pave the way for new applications in fiel...
Researchers have discovered Ixodes scapularis ticks in North Dakota, which vector Lyme disease, and are concerned about the potential spread of other tick-borne diseases. The ticks were found in six counties with established populations, raising concerns for public health.
Research in mice demonstrates that commensal bacteria enhance the immune system's ability to kill Klebsiella pneumoniae by boosting alveolar macrophage production of reactive oxygen molecules. The study suggests that signals from these beneficial bacteria play an active role in regulating immune function, even in the absence of infection.
Researchers have developed a molecule that can silence the NDM-1 resistance gene in bacteria, restoring susceptibility to carbapenem antibiotics. This approach could be a viable strategy for treating resistant infections.
Researchers identified lactic acid bacteria in honey that effectively counteracted severe human wound pathogens and persistent horse wounds. The bacteria produce a broad spectrum of antimicrobial compounds as needed, depending on the threat.
Scientists at Case Western Reserve University have found that a leaky gut is the underlying cause of non-AIDS complications in HIV-positive patients. The study, published in PLOS Pathogens, reveals that bacterial products seep out of the colon and trigger inflammation throughout the body.