Articles tagged with Bacterial Infections
A subset of CD4 T cells create an anti-inflammatory environment within the lung tissue, protecting against TB reinfection by limiting bacterial growth and disease severity. The discovery complements previous research on protective immune T cells in controlling TB infection, suggesting a potential key to improving existing vaccines.
Scientists have created a new chemical probe to visualize the distribution of sphingomyelin and its degradation by sphingomyelinase during infections. The researchers observed increased metabolization of sphingomyelin molecules during Chlamydia infection, paving the way for targeted strategies against infectious diseases.
Researchers have successfully infected gastrointestinal epithelial cells with Chlamydia trachomatis using lab-grown human organoids. This finding supports the theory that Chlamydia can form a reservoir in the human gut, highlighting the importance of further investigation into this potential reservoir.
Researchers developed a new 'pan-pathogen' deep sequencing approach to capture multiple bacterial strains simultaneously. This method enables faster and more comprehensive tracking of antibiotic-resistant bacteria, potentially preventing and managing common hospital infections quicker.
A team of researchers at UC Davis Health discovered a novel bioelectrical mechanism that allows Salmonella bacteria to navigate the gut lining and find vulnerable entry points. The study found that Salmonella bacteria detect electric signals in FAE, which helps them move towards openings in the gut where they can enter.
Researchers have discovered that oleic acid, a naturally occurring oil in the body, restores a healthy balance of vaginal microbes in a laboratory model of BV. Oleic acid inhibits growth of detrimental bacteria and promotes healthier species associated with a stable microbiome.
Researchers at The University of Warwick created a realistic model of ventilator-associated pneumonia (VAP) to better understand the infection. The study found that combining antibiotics with enzymes that break down biofilm slime layers could successfully eradicate the bacteria, offering new hope for treatments.
A genetic analysis of Lyme disease bacteria has created a powerful resource for identifying specific bacterial strains, enabling more accurate diagnostic tests and treatments. The study reveals how these bacteria evolve and exchange genetic material, providing insights for predicting and responding to changes in their behavior.
A study analyzing 5.5 million EU/EEA infectious disease cases over 10 years found significant sex differences in notified male versus female cases for several diseases. The proportion of males ranged from 40-45% for pertussis and Shiga toxin-producing Escherichia coli infections to 75-80% for HIV/AIDS.
A study published in PLOS Water found associations between weather, geographic location, and urban/rural settings with waterborne infectious disease hospitalizations. Hospitalization rates were higher for enteric and biofilm-forming bacterial pathogens in areas using groundwater, while precipitation increased parasitic infections.
A study found that hospitalization of a relative increases the risk of MRSA infection in household members. The longer the relative's hospital stay, the higher the risk. Researchers recommend enhanced infection control practices to track and mitigate transmission.
Researchers at WashU Medicine have developed a novel compound that effectively clears bacterial infections in mice, including those causing rare and potentially fatal 'flesh-eating' illnesses. The compound targets gram-positive bacteria, reducing virulence and speeding up post-infection healing.
A new study found that heteroresistance, a phenomenon where a tiny fraction of bacteria remain resistant to antibiotics, is also present in fungal bloodstream infections in bone marrow transplant patients. The research identified the specific species of fungi responsible and developed a machine learning model to detect this type of inf...
A study identified a protein called IL-22BP that affects the composition of gut microbiota and the body's response to bacterial infection. The absence of this protein results in stronger defenses against intestinal infections, including increased production of short-chain fatty acids that promote an anti-inflammatory environment.
Researchers analyzed ancient DNA from an 8,000-year-old sheep bone and found evidence of Brucella melitensis, a pathogen causing significant harm to livestock. The study suggests that brucellosis evolved around the same time as farming development, with early farmers creating conditions for pathogen host-jumping.
Human lung organoids can form lifelike models for tuberculosis infection, enabling the testing of anti-tuberculosis drugs. These models may also facilitate the development of host-directed therapies.
A new study reveals that Cutibacterium acnes can persist in biofilms on implants for weeks, invading deep bone networks and causing chronic infections. The bacteria's ability to invade osteocyte lacuno-canalicular networks provides a novel mechanism for treating difficult-to-treat bone infections.
A study by Michigan State University reveals that certain proteins and peptides in the nasal and oral environments create lubricants for bacterial colonies to move towards vulnerable sites. The discovery provides new insights into how staphylococcus bacteria spread, shedding light on conditions that accelerate their movement.
A study by Dr. Takanori Sekito and colleagues reveals a strong association between vaginal pathogenic Escherichia coli and recurrent cystitis in postmenopausal women, suggesting that targeting both the urinary bladder and vagina is crucial for effective treatment.
Emerging antimicrobial resistance in Salmonella isolates found in retail chicken meat poses a significant threat to public health. The study found a dramatic increase in multidrug-resistant S. Infantis, which has been linked to high levels of antimicrobial resistance and virulence genes.
Researchers from Rice University discovered that viruses achieve precise timing in cell lysis by balancing the buildup and breakdown of holin proteins. This balance ensures optimal cell bursting, essential for viral replication, despite underlying randomness in biological processes.
Scientists from Hackensack Meridian Health have identified a new potential pathway for developing vaccines against tuberculosis by targeting marginal zone B (MZB) cells, a natural response to TB infection. The discovery suggests that boosting MZB cell activity could provide reliable and durable protection against the disease.
Researchers at Hokkaido University have developed a comprehensive derivative synthesis method to find new antimicrobial drugs. They identified eight analogs possessing strong MraY inhibitory and antibacterial activity, with one showing promising effectiveness in mouse infection models.
Researchers have discovered how Haemophilus influenzae turns off the body's immune responses to persist in respiratory tissues. The bacterium convinces the immune system there is no threat, inducing a state of tolerance, and can worsen symptoms in vulnerable groups like cystic fibrosis patients and asthma sufferers.
Research reveals native plants and non-native crops attract pests that spread diseases, causing harm to both plant populations. The studies also found viruses transmitted from crops to wild plants, which can have devastating effects on native ecosystems.
Researchers at Trinity College Dublin have made a breakthrough in understanding how to improve vaccine responses against the potentially deadly MRSA bacterium. By targeting the immune-suppressive molecule IL-10, they improved the ability of vaccines to protect against infection and reduce bacterial clearance.
Researchers at University of Cambridge developed machine-learning tool to identify drug-resistant Salmonella Typhimurium bacteria from microscopy images. The algorithm correctly predicted resistance or susceptibility without culturing the bacteria, reducing diagnosis time from days to hours.
A recent study mapped the evolution of Pseudomonas aeruginosa, a deadly bacterium that causes devastating infections in people with underlying lung conditions. The researchers found that almost seven in ten infections are caused by just 21 genetic clones, which have rapidly evolved and spread globally over the last 200 years.
A new study finds that antimicrobial peptide mixtures can delay the evolution of antibiotic resistance in Pseudomonas aeruginosa. The mixtures, which are synthesized in a lab, were found to prevent cross-resistance and maintain drug sensitivity.
Researchers have detected anaerobic and aerobic bacteria in commercial tattoo and permanent makeup inks, indicating a potential source of human infections. The study found that around 35% of tattoo or permanent makeup inks sold in the US were contaminated with bacteria, highlighting the importance of monitoring these products.
A new study suggests taxing certain antibiotics could help manage the threat of antibiotic resistance in humans. By making narrow-spectrum drugs cheaper and broad-spectrum ones more expensive, GPs may be incentivized to prescribe narrower options.
Dr. Harish Manyam has developed a groundbreaking system that addresses potentially dangerous problems associated with traditional pacemakers and defibrillators. The leadless pacemaker, in combination with a novel subcutaneous defibrillator, eliminates the need for lead extraction procedures.
A study at Umeã University reveals that an enzyme breaks down the bacteria's protective outer layer, facilitating the transfer of genes for resistance to antibiotics. The researchers identified that only the SLT domain was active in PrgK, but it has an important role in regulation.
Research by a University of Virginia undergraduate may help explain recurrent Crohn’s disease in children and open the door to new ways to treat or even cure the devastating condition. Children with relapsing Crohn’s had persistent disruptions of their microbiomes even after inflammation was successfully controlled.
Researchers have designed a novel 3D hydrogel culture system that accurately mimics the mammalian lung environment, allowing for the study of tuberculosis bacteria infection and therapeutics. The system successfully tracks infection progression and demonstrates the efficacy of pyrazinamide in clearing out TB bacteria.
A study of over 10,000 people found that those with fewer butyrate-producing bacteria in their gut were more likely to develop serious infections. The research suggests a strong link between the microbiome and the immune system, opening up new possibilities for preventing serious infections.
A recent study found that antibiotic-resistant strains of bacteria endemic to the UK and Norway are not prevalent in Pakistan despite widespread use of antibiotics. The study used genomic surveillance to map different strains of Escherichia coli, highlighting the importance of understanding bacterial threats in specific regions.
Researchers have gained insight into how a deadly strain of salmonella adapts to invasion, flourishing in hostile environments and evading immune defenses. The study sheds light on the role of fluid shear forces in bacterial behavior, which may accelerate the design of new therapies for life-threatening infections.
Researchers have identified two distinct types of dysbioses in cystic fibrosis, which differ in their ecological organization and response to treatment. These findings suggest that antimicrobial drugs may be more effective in hierarchically organized microbiota, potentially leading to improved treatment outcomes for patients.
A new study has found that patients diagnosed with schizophrenia or another psychotic disorder are three times more likely to have Bartonella DNA in their blood than adults without these disorders. The study suggests a potential role for vector-borne pathogens, such as fleas and ticks, in mental illness.
Researchers used human lung microtissues to uncover the strategy used by Pseudomonas aeruginosa to invade lungs. The pathogen targets goblet cells, which it uses as Trojan horses to breach the defense line. Lung organoids also enabled the development of a sensor to monitor bacteria and track their behavior during infection.
A novel antibacterial lipopeptide produced by Serratia marcescens has been shown to be highly effective in killing Staphylococcus aureus. The lipopeptide targets the cell membrane, causing lesions and cell death.
A molecule produced by gut bacteria, indole-3-propionic acid (IPA), has been found to reduce viral load and inflammation in mice infected with influenza virus. Researchers at the State University of Campinas and Pasteur Institute discovered that supplementing IPA supplementation reduced symptoms and improved outcomes.
A recent study has identified over 300 distinct types of bacteria in Roman Baths water, including those with antibiotic-producing capabilities. These microorganisms show promise as a potential source of novel natural products to combat antibiotic resistance.
Researchers tested seven antibiotics in combination with various natural compounds, finding synergistic effects against multidrug-resistant bacteria. The study suggests combining antibiotics with plant extracts or phytochemicals could be a promising strategy to combat antimicrobial resistance.
A new study demonstrates personalized phage therapy's effectiveness in treating antibiotic-resistant infections in animals, with a case of a cat healing from a persistent wound. The treatment combines a specific anti-Pseudomonas aeruginosa phage with ceftazidime, achieving full healing after 14 weeks.
A novel real-time PCR method has been developed to detect and identify the emerging zoonotic foodborne pathogen E. albertii, which is often misidentified as E. coli. The study found that E. albertii can survive in the human intestinal tract for approximately four weeks.
The new nanodevice shows significant efficacy against pathogenic microorganisms such as Escherichia coli, Staphylococcus aureus, and Candida albicans. It improves the efficacy of encapsulated cinnamaldehyde by up to 52-fold for E. coli and 60-fold for S. aureus.
A new Lancet Series estimates that over 750,000 deaths associated with antimicrobial resistance (AMR) could be prevented annually through improved prevention methods. AMR poses significant threats to newborns, elderly individuals, and those with chronic illnesses, causing nearly 5 million deaths globally each year.
The study found a 5.7% blood culture positive rate among eligible Hem-Onc patients, with 56% having an absolute neutrophil count greater than 500 µL at presentation. Gram-positive organisms were the most common isolates, highlighting the diversity of bloodstream infection causes in this patient population.
New studies by University of Michigan physicians highlight the need for improved diagnosis coding to target efforts to optimize antibiotic use and reduce risk. Inappropriate prescriptions occur in up to 35% of adults treated in emergency departments, with similar rates seen in clinics serving Medicaid patients.
Researchers characterized the microbial composition of oral fluid, feces, and environment of nursery piglets on commercial farms in Brazil. The study found distinct oral fluid bacterial profiles differing from those in feces and environment, with potential implications for swine health and production.
Researchers discovered that coumarin glycosides inhibit the growth of Salmonella Typhimurium by competing for iron, reversing enterococci-mediated infections. The study validates diet-based strategies to mitigate enteric polymicrobial infections.
A new study found that treatment with piperacillin/tazobactam increased 90-day mortality by 5% compared to cefepime. The antibiotic depletes the gut microbiome, which plays a crucial role in metabolism, immunity, and preventing infections.
Researchers identified a unique two-part defense system that destroys plasmids, protecting the bacterial strain from evolution and contributing to its longevity. This discovery could lead to new treatments or prevention strategies against severe symptoms.
Researchers have identified new cellular targets for a vaccine to treat eczema in children, which may limit the severity of symptoms and reduce antibiotic use. The study uncovered specific immune signatures in children with infected flares of eczema, providing a potential blueprint for future therapies.
A new study suggests that countries should prioritize tuberculosis treatment for exposed individuals with evidence of TB infection, regardless of age—except in high-burden settings, where all exposed individuals should be considered for treatment. Preventive treatment can stop latent TB infections from developing into deadly TB disease.
Researchers have identified a subset of intestinal epithelial cells that act as both the major target and responder in a mouse model of gut infection by Citrobacter rodentium. These cells, known as distal colonocytes, trigger a unique gene-expression program when infected with the bacteria.
Researchers identify critical genes and transport systems in E. coli that enable rapid growth despite sterile urine environment. ABC transporters appear crucial for infection, with inhibitors potentially slowing bacterial growth and complementing antibiotic efforts.
Researchers at George Mason University have developed a urine test for Lyme disease that detects the bacteria causing the infection, leading to earlier treatment and prevention of long-term debilitating effects. The test has shown high sensitivity and specificity, and will be made available through telehealth to increase accessibility.