Articles tagged with Bacterial Pathogens
A new treatment option for multi-resistant bacteria has been identified by a UNIGE team, which uses the drug edoxudine to weaken the defence mechanisms of Klebsiella pneumoniae, making it easier to eliminate. This approach could be a game-changer in the fight against antibiotic resistance.
A large listeriosis outbreak in southern Spain was linked to contaminated stuffed pork, which led to a public health alert and the implementation of post-exposure prophylaxis for pregnant women. The outbreak resulted in 207 confirmed cases and five miscarriages, highlighting the risk of Listeria contamination in ready-to-eat foods.
Research found that the Black Death drove changes in immune-related genetic variants, affecting disease susceptibility. A specific gene variant, ERAP2, was associated with increased protection against the plague, but also linked to autoimmune diseases like Crohn's disease.
Researchers have successfully blocked the adhesion mechanism of Bartonella henselae bacteria, preventing cell infection. The discovery offers a promising new approach to combat highly resistant infectious agents like Acinetobacter baumannii.
Researchers at ITQB NOVA extract bactericidal mixtures from tomato peels using a fast, simple, and sustainable process. The extracts show effectiveness against pathogenic bacteria, including Staphylococcus aureus and Escherichia coli. This breakthrough has the potential to provide antimicrobial properties to biomaterials.
A study by Osaka University researchers has revealed the molecular details of how Vibrio cholerae secretes its colonization factor TcpF. The mechanism involves the Toxin-coregulated pilus (TCP) system, which allows the bacterium to colonize the human intestine and initiate infection.
The WHO European Region sees high mortality rates due to antimicrobial resistance, with countries implementing national actions plans showing lower AMR burden. Developing new treatments and improving hygiene are crucial strategies to combat this growing health threat.
A recent study by Zhenzhen Zhao and colleagues found that Arabidopsis plants lacking Acyl Carrier Protein 1 (ACP1) are more resistant to bacterial pathogen Pseudomonas syringae. ACP1 is essential for maintaining hormone homeostasis, which affects plant stress responses.
A WVU biomedical engineer is working on a rapid diagnostic tool that can detect tick-borne infections such as Lyme disease via a blood sample on a single chip. The tool uses dielectrophoresis and machine-learning to detect diseases within one to two weeks after onset, reducing the risk of hospitalization and chronic conditions.
Researchers at La Jolla Institute for Immunology have discovered a rare T cell defect tied to the risk of developing MAC disease. People with this defect have fewer specialized Th1* cells, which robs them of an effective immune response to MAC bacteria.
A study by MedUni Vienna's Department of Dermatology reveals that tick saliva inhibits the skin's defense function, making it easier for pathogens to multiply. Climate change increases the danger from ticks, which now pose a threat in higher-altitude regions of Austria and well into late autumn.
Research reveals that symbiotic bacteria, Burkholderia gladioli, produce antifungal compound lagriamide to protect Lagria beetles' eggs, larvae, and pupae from fungal infections. The bacterial community remains intact during molting stages, providing crucial defense against pathogens.
A new study led by NYU researchers has developed a topical gel that targets the succinate receptor to suppress inflammation, reduce bacterial imbalance, and prevent bone loss. The treatment has shown promise in reducing gum disease symptoms, including inflammation and tooth loss.
A new study developed an analytical model that can predict Lyme disease bacteria distribution and abundance on the landscape. The research found that climate and habitat disturbance were key factors in determining infectivity rates.
Researchers at Imperial College London discovered a 'silent' mutation in bacteria that helps them evade antibiotics. The mutation alters the structure of an mRNA intermediate, preventing ribosomes from producing protein, and has arisen independently several times globally.
Researchers at Duke University have discovered a protein called GarD that cloaks Chlamydia bacteria from the host cell's immune system, allowing it to evade detection and elimination. Mutating this protein makes the bacteria vulnerable to destruction, offering new avenues for treatment.
Scientists at Aston University developed a new treatment combining manuka honey with the widely used antibiotic amikacin to treat drug-resistant lung infections. The study found that this combination improved bacterial clearance and reduced side effects, benefiting patients with cystic fibrosis.
Research at Karolinska Institutet reveals the glymphatic system malfunctions during bacterial meningitis, causing a buildup of toxic garbage that damages brain cells. The study found increased signs of neuroinflammation and neuronal damage in rats infected with Streptococcus pneumoniae.
A new study from the University of South Australia shows that captive frogs can be protected from the deadly fungus Batrachochytrium dendrobatidis (Bd) through natural skin shedding processes. However, captivity also reduces skin bacteria diversity and richness, potentially affecting the frogs' resilience to pathogens.
Researchers at Rice University have created a new optical tool called homo-FRET that allows them to observe the real-time activity of two-component systems in bacteria. This breakthrough enables scientists to study the behavior of deadly pathogens and antibiotic-resistant bacteria, shedding light on their mechanisms and potential targe...
Researchers have discovered the key components in plant cells that trigger 'wartime' protein production in response to pathogens. This mechanism allows plants to rapidly produce defense proteins while balancing resources between growth and defense, a delicate process that could inform strategies for creating disease-resistant crops.
A new class of light-activated hemithioindigo molecules developed by Rice University scientists kill specific Gram-positive bacteria and their biofilms. The molecules induce reactive oxygen species that chemically attack and destroy drug-resistant cells, offering a safer alternative to conventional antibiotics.
A recent study led by Eliza Loo found that plant immune receptors and signaling components confer salt tolerance even in plants challenged by non-pathogenic microbes. This suggests that plants can sense and initiate adaptive responses to abiotic stresses upon detecting alterations in cues presented by plant-inhabiting microbes.
Researchers have discovered how Acinetobacter baumannii bacterium attaches to surfaces using ultrathin stretchy fibers, enabling it to colonize medical devices and infect patients. The unique zigzag structure of the fibers plays a crucial role in their secretion and attachment to surfaces.
Researchers captured first image of antigen-bound T-cell receptor complex with bound antigen at atomic resolution. The study reveals no significant structural changes in the receptor after antigen binding, sparking further investigation into the signaling pathway activation mechanism.
A Rutgers scientist has developed a highly sensitive DNA test that can detect Lyme disease in horses, a condition that can cause long-term complications. The test, called genomic hybrid capture assay, was tested on a sick horse and successfully identified the pathogen, allowing for early diagnosis and treatment.
A newly identified species of Liberibacter, a family of bacteria known for causing citrus greening disease, is rapidly evolving its ability to infect insect hosts. The research team found 21 genes associated with infectious qualities and identified mutations affecting pilus proteins that allow the bacteria to move into host insects.
Researchers discovered a novel role for an E. coli enzyme in reducing the toxic effects of hypothiocyanite, a key antimicrobial released by the human immune system. This finding has implications for diseases like cystic fibrosis and inflammatory bowel disease, as it suggests that various bacteria can evade this powerful oxidant.
A new study by Johns Hopkins Medicine researchers reveals a promising genetic method for identifying hundreds of disease agents using next-generation sequencing. The Respiratory Pathogen Infectious Diseases/Antimicrobial Resistance Panel (RPIP) system shows near-comparability to traditional diagnostics in identifying pathogens.
Research shows higher concentrations of pathogenic dust landing at lower elevations in the Sierra Nevada mountains, carrying fungi and bacteria that can cause crop failures and human respiratory disease. The study highlights the increasing threat of microbe-laden dust as the Earth dries out.
A new study published in Applied and Environmental Microbiology suggests that oil formulations with food-grade organic acids can kill dried Salmonella on stainless steel surfaces. This approach has the potential to replace water-based cleaning methods, which promote microbial growth and are often challenging to use.
Researchers have designed a phage combination therapy that precisely targets and suppresses gut bacteria associated with inflammatory bowel diseases (IBD). The team identified effective phages against IBD-contributing Kp strains, which attenuated inflammation and tissue damage in mice models.
Researchers discovered a genetic switch in group B streptococcus that helps it resist metal stress, including zinc and copper. This 'cross-talk' mechanism allows the bacterium to survive in the human body's immune system.
A newly published framework outlines steps for administering probiotics to wildlife, prioritizing native species, effective dosages, and delivery systems. The goal is to restore beneficial bacteria and protect key symbiotic relationships, while considering potential risks and side effects.
Researchers have designed a nano-copper coating with zinc that kills bacteria by rupturing their cell wall, reducing the incidence of bacterial infections on high-touch surfaces.
Researchers have discovered a new mechanism that some bacteria use to evade rifamycin antibiotics, showing antimicrobial resistance is more complex and evolved than previously recognized. The discovery has implications for finding new antibiotics and combating the growing global health threat of antimicrobial resistance.
A study reveals urban waters exhibit distinct microbial signatures compared to rural lakes, indicating humanization and eutrophication's effects on ecosystems. This shift may increase the risk of pathogens and contamination in urban areas.
A new study by Flinders University experts warns that some drinking water treatment methods may be ineffective against certain waterborne pathogens, posing a threat to immune-compromised individuals. Regular maintenance checks and cleaning of shower and tap faucets can help reduce the risk of waterborne infections in home care.
A new study suggests that a unique gene variant supporting cognitive health in older humans may have first emerged to protect against infectious pathogens like gonorrhea. This variant, linked to CD33, allows brain immune cells to break down damaged brain cells and amyloid plaques associated with Alzheimer's disease.
Rice University bioscientists have developed a novel approach to control the expression of 'silent' genes in bacteria using CRISPR technology. This strategy could lead to the discovery of new antibiotics and has potential applications in antifungal and anticancer agents, as well as agriculture.
Researchers at Ben-Gurion University have found a phytochemical derived from broccoli that breaks down biofilms protecting antibiotic-resistant pathogens, enabling eradication rates of up to 94% when combined with antibiotics. The compound also accelerates wound healing and is being further developed for commercialization.
Gut bacteria produce inositol lipids, vital for cellular processes in humans, and these substances impact the symbiosis between bacteria and their hosts. The discovery sheds light on how gut bacteria thrive in their human hosts.
Scientists have found that prior exposure to Staphylococcus aureus prevents effective vaccination due to immune response memory. To overcome this, the research suggests targeting only the protective component of the protein IsdB, generating a more effective vaccine against MRSA.
Researchers have designed a new vaccine candidate using bacterial vesicles coated on gold nanoparticles to deliver antigens and stimulate an immune response against tuberculosis. The use of outer membrane vesicles has shown promise in inducing a better immune response compared to traditional subunit vaccines.
Research at Johannes Gutenberg University Mainz reveals Photorhabdus luminescens can protect plants from fungal infection, colonizing the fungus's hyphae and breaking down its cell wall. This secondary cell form also promotes plant growth and offers new potential for biological crop protection.
A heat-loving bacterium's Cas13 protein enables specific detection of SARS-CoV-2 and other viruses in a one-pot assay. The technology has been patented and clinically validated, with the aim of mass production and commercialization.
Researchers explore the emergence of antibiotic resistance genes in bioaerosols, including sources and detection strategies. The study highlights the need for monitoring and understanding the relationship between human, animal, and environmental microbiomes to counter the spread of AR.
A research group has discovered that a coral pathogen, Vibrio coralliilyticus, kills non-pathogenic competitors in the coral microbiota through prophage induction. This process involves the generation of hydrogen peroxide, which eliminates harmless bacteria and allows the pathogen to outcompete and colonize the coral.
Researchers have deciphered the exact bacterial adhesion mechanism using Bartonella henselae, revealing a key role for trimeric autotransporter adhesins and their interaction with fibronectin. Experimental blocking of these processes almost entirely prevents bacterial adhesion.
A new therapeutic target for melioidosis has been identified by researchers at the Leibniz Institute for Natural Product Research and Infection Biology. The enzyme BurG synthesizes a toxic molecule central to infection, and inhibiting it could make bacteria less virulent.
New research reveals that specific proteins in plant cells explain why plant defenses falter under high temperatures, leaving them susceptible to infections. Scientists have also discovered a way to reverse this effect by constantly activating the CBP60g master switch gene, which bolsters plant defenses without stunting growth.
Researchers from the University of Würzburg have developed precision antibacterials using mRNA technology, targeting specific genes in uropathogenic Escherichia coli. The study shows that these active agents can effectively block only one specific gene, and reducing their size to nine base pairs can minimize non-specific binding.
A new biodegradable food packaging system reduces microbial contamination and extends shelf life, reducing waste and foodborne illness. The system uses pullulan-based fibers with natural antimicrobial agents, demonstrating a significant reduction in contamination and an increase in avocado shelf life.
SeqScreen, an open-source software toolkit, accurately characterizes short DNA sequences to detect pathogenic sequences. The program uses a curated database of thousands of gene sequences representing 32 types of virulence functions.
Researchers at Kyoto University have discovered the skin's natural protection from nighttime bacterial invasion in mice, which may provide a basis for developing a drug treatment. The team found that epidermal CXCL14 is produced in a circadian rhythm-dependent manner, providing antimicrobial function against Staphylococcus aureus.
Researchers developed a new medical instrument called CAST-R-HP to diagnose and treat Helicobacter pylori infections. The tool performs rapid pathogen identification, metabolism inhibition-based antimicrobial susceptibility tests, and high-quality single-cell whole-genome sequencing.
Researchers at Harvard's Wyss Institute identified genes and molecular pathways that control tolerance to pathogens in frog embryos, which are also found in mammals. The study suggests that increasing tolerance to pathogens could be an effective way to prevent death and disease without exacerbating antibiotic resistance.
Scientists detect a highly resistant strain of Neisseria gonorrhoeae in Austria, causing treatment failure with current antibiotics. The discovery highlights the urgent need for enhanced antimicrobial surveillance and development of novel treatments to combat this growing public health concern.
Researchers have found a negative correlation between Helicobacter pylori infection and inflammatory bowel disease (IBD) prevalence, suggesting the bacterium may protect against IBD. This is supported by studies showing improved gut microbiota diversity and increased abundance of beneficial bacteria in H. pylori-infected individuals.
Researchers developed a nanoparticle sensor that can accurately distinguish between viral and bacterial pneumonia within two hours using a simple urine test. The sensor uses the host's immune response to infection, detecting specific protease patterns that serve as signatures of bacterial or viral infection.