Articles tagged with Bacterial Pathogens
A new study finds that immune cells can die to alert neighboring cells to the presence of infection, making it a potential anti-microbial strategy. Researchers discovered that caspase-8 plays a crucial role in this process, allowing infected host cells to spread the word about an infection.
A study by the FDA found that Paenibacillus alvei significantly reduced Salmonella on contaminated tomato plants, reducing the risk of food-borne illnesses. The beneficial bacterium has no known history of human pathology and is being considered as a biological control agent to prevent outbreaks.
Scientists identified two proteins on fetal membranes that help the body's immune cells recognize and fight GBS bacteria. The study found a genetic risk factor for premature birth in fetuses lacking one of these proteins, highlighting the importance of GBS-siglec crosstalk on placental membranes.
Researchers developed antimicrobial edible films using pullulan and essential oils, which significantly inhibit bacterial pathogens in meat and poultry. The films provide immediate and sustained kill of bacteria, reducing the risk of foodborne illness.
A team at Washington University in St. Louis solved the structure of NolR, a master off-switch for the nodulation process that converts bacteria into nitrogen-fixing organisms. The discovery provides insight into the biological machinery of nitrogen-fixing and may lead to re-engineering crop plants with on-site nitrogen-fixing systems.
A study published in PLOS Pathogens demonstrates that an antimicrobial peptide produced by human immune cells can promote mutations in bacteria that make them more lethal. Researchers found that a specific immune system cell called polymorphonucleocytes can trigger bacterial conversion to a more resistant form.
A study found that certain plant acids invite bacterial infection by focusing the attackers on a specific target. This molecular signal can be used to protect plants and potentially lead to new biofuels and human health applications.
Researchers at the University of Missouri identified a molecular signal that invites bacterial attack in plants. This discovery could lead to natural defenses against harmful bacteria in food-producing plants.
A recent study has identified 80 unique antibiotic resistance genes in cow manure, including a new family of chloramphenicol-resistant genes. These genes have the potential to transfer to bacteria in soil and food, posing a risk for human health if they colonize harmful bacteria.
The study analyzed 224 strains of Yersinia family members, revealing parallel independent evolution of pathogenicity in species like Yersinia pestis and enterocolitica. The researchers found that acquisition of specific genes and loss of metabolic functions are key traits for pathogenic species.
Researchers discover multitarget TB drug SQ109 that attacks tuberculosis and other pathogens, reducing the risk of resistance. The team created chemical analogs with improved effectiveness against various diseases, including malaria and parasites.
Dr. Jon McCullers reviews the co-pathogenesis of influenza viruses with bacteria, highlighting complex interactions leading to severe disease and increased morbidity. He calls for large-scale studies to unlock unanswered questions about co-infections and viruses to prevent future pandemics.
Freiburg researchers identify LRP1 as a key molecule that regulates the intake of toxic bacteria like Clostridium perfringens. This finding opens up new avenues for developing agents against clostridia and may lead to breakthroughs in treating diseases caused by these pathogens.
A research team discovered an interferon-induced GTPase protein family that destroys bacterial camouflage, allowing cells to recognize and eliminate Salmonella. This finding sheds light on the immune system's strategies against bacterial pathogens.
Researchers identify E. coli O157:H7's mechanism of binding to plant cells using flagella structures, allowing it to anchor and multiply on vegetable surfaces. This understanding aims to reduce the risk of food contamination by targeting bacterial attachment.
Bacteria have been found to possess a surprisingly flexible immune system that can recognize and neutralize viruses and other foreign DNA invaders. This adaptive immunity, termed CRISPR-Cas, allows bacteria to store genetic memories of past infections and respond quickly to future exposures.
A study published at The Wistar Institute Cancer Center found that bacterial virulence proteins can suppress DNA repair proteins in epithelial cells, leading to genetic mutations that favor tumor development. This research opens the possibility of modifying colon cancer risk by altering gut bacteria populations.
Novel proteins in gonorrhea bacteria may offer a way to attack the survival and spread of the disease. These proteins are essential for growth and survival, making them a promising target for vaccine development or new drug treatments.
Researchers at Woods Hole Oceanographic Institution identified a core skin bacterial community shared by humpback whales across populations, suggesting a way to assess their overall health. The study's findings could aid in population health monitoring and conservation status of threatened or endangered marine mammals.
Researchers found that humpback whale skin bacterial communities consist mainly of Tenacibaculum and Psychrobacter spp., but differ by geographic location and metabolic state. The study suggests that these bacteria may act as an indicator of whales' health and the environment.
Researchers found that MP196 peptide disrupts bacterial cell wall biosynthesis and cell respiration, preventing growth. The study suggests MP196's potential in developing new antibiotics without harming human cells.
Roy Curtiss, a pioneer in recombinant DNA era gene cloning and novel bacterial pathogenesis research, has made significant contributions to developing attenuated Salmonella-based vaccines. His work has improved human health through combating infectious diseases, particularly pneumonia, tuberculosis, and influenza.
Researchers at UCL have created a new antibacterial material using simple dyes and nanogold particles, showing potent bactericidal effects even in total darkness. The innovative surface technology has potential to reduce hospital-acquired infections.
An international team of academics has identified a single bacteria as the cause of sepsis through genetic evidence. The study found that in most cases, a single pneumococcal cell was responsible for causing sepsis.
Researchers found that even with large doses of bacteria, sepsis often starts with just one bacterium. The immune system efficiently clears most bacteria, but sometimes a single founder bacterium survives and multiplies to cause disease. Macrophages play a key role in this process.
A new type of single-dose vaccine that doesn't require refrigeration is being developed to combat emerging and re-emerging diseases in remote areas. The 'nanovaccine' can be stored at room temperature for up to six months and works by triggering both humoral and cell-mediated immune responses.
Researchers create novel antimicrobial peptides (AMPs) that burst through bacterial cell walls, killing resistant strains. The discovery could lead to new therapies against tuberculosis and other deadly diseases.
Researchers at Salve Regina University discovered that honey has multiple mechanisms to combat bacterial infections, including the osmotic effect, acidity, and polyphenols. The study found that honey inhibits biofilm formation and disrupts quorum sensing, making bacteria more susceptible to conventional antibiotics.
A study published in PLOS Pathogens found that a family of fungi called Pichia suppresses the growth of disease-causing fungi like Candida. This antagonism is thought to be responsible for reducing the severity of oral candidiasis in HIV-infected individuals.
Researchers at the University of Geneva have discovered a new class of molecules that target the heat shock protein 90 in Plasmodium falciparum, a key factor in malaria resistance. The study reveals five candidate molecules toxic to the parasite but not human red blood cells.
Gut bacteria help develop immune cells that can fight infections, study finds. The beneficial bugs also increase immune cell populations and enhance survival rates when mice are infected with harmful bacteria.
Research at the University of Copenhagen reveals that cosmetic fillers can act as incubators for bacterial infection, causing lesions and tough film-like material resistant to antibiotics. Prophylactic antibiotic treatment during procedures can prevent these complications.
The gut microbiota's complex relationships with different microorganisms contribute to both health and disease, according to recent advances in DNA sequencing technology. Non-bacterial microbes like viruses and meiofauna also play a crucial role in shaping the gut ecosystem.
A new study found that more than 80% of raw chicken used in hospitals was contaminated with antibiotic-resistant bacteria, posing a significant risk to patients and staff. However, robust food safety measures taken by hospital kitchen staff were able to prevent the spread of these pathogens.
Research reveals that seminal plasma enhances bacterial movement, promoting infection; increased bacterial density on human epithelial cells also facilitate infection. More than 100 million new gonorrhea cases annually worldwide.
A team of French investigators discovered viruses containing antibiotic resistance genes in a fossilized fecal sample from 14th century Belgium. The findings suggest that the viral community plays a fundamental role in maintaining human health, unchanged over centuries.
Researchers found that byproducts of two bacteria causing gum disease promote the growth of Kaposi's sarcoma-related lesions and tumors in the mouth. High levels of these bacteria are associated with periodontal disease, while healthy gums show lower levels.
A study by University of Massachusetts Amherst researchers found that flowers are ideal venues for the transmission of microbes among plants and animals. The authors identified eight major groups of animal pathogens potentially transmitted at flowers, including fungi, bacteria, and RNA viruses.
Tc toxin complexes, used by bacteria like Yersinia pestis and Photorhabdus luminescens, have been imaged with atomic detail. The complexes use an elastic band-like protein chain to penetrate cell membranes, depositing toxic enzymes. This mechanism has potential applications in medicine, including selectively targeting cancer cells.
A new hypothesis suggests that leprosy has existed for millions of years, with roots dating back to around 10 million years ago. The disease is believed to have evolved from a common ancestor of two known leprosy bacteria, which underwent reductive evolution resulting in a lean genome and loss of free-living ability.
Researchers discovered that slimmer, more traditionally attractive men tend to have fewer potentially pathogenic species of bacteria in their noses compared to heavier men. This link between body mass index (BMI) and bacterial colonization has significant implications for reproductive health.
Researchers find new type of P. acnes bacterium adapting to grapevines, with evidence suggesting human origin and loss of DNA repair function. The emergence of P. Zappae around 7,000 years ago is linked to human intensive practices in grape domestication.
Researchers found that sweet taste receptors on solitary chemosensory cells control the release of AMPs, which kill bacteria and viruses. This discovery may lead to new treatments for chronic sinusitis and other respiratory infections.
Researchers at Lawrence Livermore National Laboratory have characterized two novel proteins from the tularemia bacteria Francisella tularensis that may contribute to its virulence. These proteins, REP24 and REP34, are responsible for induction of rapid encystment in amoebae, which allows the bacteria to survive unfavorable conditions.
Researchers have sequenced the genome of Tannerella BU063, a bacterium found in healthy human mouths. The study reveals potential targets for treating gum disease periodontitis and sheds light on the genetic differences between this bacterium and its disease-causing relative.
Researchers at TUM have developed two new mechanisms of action that can permanently deactivate ClpP proteases, essential for bacterial survival. The newly discovered inhibitors target the protein's structure and function, potentially leading to more effective treatment options.
Researchers found that Wolbachia reduced malaria parasite infection and oocyst intensity at 82 degrees Fahrenheit. However, its effect varied across different temperatures, with increased oocyst intensity at 75 degrees Fahrenheit.
Researchers discovered how gut bacteria produce an enzyme that modifies signaling in cells lining the gut and breaks down phytate, a crucial nutrient. The enzyme is packaged in outer membrane vesicles (OMVs) which allow for cross-kingdom communication with human cells, influencing calcium signaling and potentially improving health.
Researchers used live ticks to detect Lyme disease bacteria in people with persistent symptoms after antibiotic treatment, but found only two positive results. The study suggests that larger studies are needed to determine the significance of these findings.
Researchers discovered a genetic mechanism controlling the production of a large spike-like protein on staph bacteria that prevents clumping and reduces disease-causing ability. The study suggests targeting clumping behavior for therapy, potentially reducing staph infections.
A new study reveals a previously undefined immune pathway in humans that provides vital information for designing vaccines and medicines to combat bacterial infections. The research found that T-cells can respond defensively to bacterial attacks without specific antigens, leading to a maximal response and improved survival.
A study by researchers at the University of California, Irvine found that interleukin-22 enhances the growth of dangerous bacteria like Salmonella while curbing the growth of healthy gut bacteria. This unexpected finding suggests that a protective immune response can actually aid the growth of harmful pathogens.
A new study examines Avian pathogenic Escherichia coli (APEC) and finds that bacterial fibers, such as common pilus, play a crucial role in its ability to cause infection and form biofilms. The research also highlights the importance of understanding the virulence traits shared between APEC and human ExPEC strains.
The study reveals that the internal bacterial diversity of the red postman butterfly is halved during pupal stage and doubles after emergence as an adult. This discovery highlights the importance of the microbiome in insect health and behavior, with potential implications for pest control and understanding the evolution of unique traits.
Scientists have developed a faster and more specific method to detect bacteria-tainted food, using nanomechanical cantilevers that can identify eight different types of Salmonella. The technique has the potential to prevent food poisoning and save thousands of lives annually.
A team of biologists and architects found that building design influences microbial communities, with variations depending on architectural choices. The study analyzed DNA from over 30,000 types of bacteria, revealing distinct communities in different rooms, such as bathrooms and offices.
Researchers at VIB have identified a chemical substance that can disarm pathogenic bacteria, allowing them to treat urinary tract infections without destroying beneficial bacteria. This approach could provide a lower risk of resistance development and spread.
Researchers uncover that two devastating plagues were caused by distinct strains of the same pathogen, which may lead to a better understanding of modern infectious disease dynamics. The study also raises questions about why a highly deadly pathogen died out and could potentially inform responses to future pandemics.
Researchers at Rice University have developed a novel biosensor that can detect multiple strains of salmonella pathogens in food quickly and easily. The sensor uses microcantilevers decorated with peptides to identify the presence of specific bacteria, delivering results within minutes and outperforming existing standard tests.
Researchers at the University of Basel have discovered how Salmonella bacteria outsmart the host's immune cells, allowing them to survive and spread infection. This knowledge may lead to new treatments for typhoid fever, a life-threatening disease affecting millions worldwide.