Articles tagged with Bacterial Infections
A recent Mayo Clinic study found adults with asthma are seven times more likely to develop invasive pneumococcal diseases, a serious and potentially fatal condition. The researchers recommend including asthma as an indication for pneumococcal vaccination in adults, which could significantly reduce instances of this disease.
ETH Zurich researchers discovered a previously unknown protein structure and mechanism for sulfur transfer in E. coli, which could lead to the development of antibacterial drugs targeting urinary tract infections. The unique two-propeller structure of ASST catalyzes a ping-pong mechanism for sulfuryl transfer.
Researchers discovered that phenazine molecules activate the transcription factor SoxR in Pseudomonas aeruginosa, influencing biofilm formation and gene expression. This finding suggests that tampering with phenazine trafficking could make antibiotics more effective against CF patients' infections.
Researchers at Stanford University School of Medicine found that a fruit fly's immune system responds to infections based on its daily cycle and circadian rhythms. The study suggests that understanding the relationship between sleep patterns and immunity could have significant implications for human health.
Research reveals that the immune system's phagocytic response is stronger at night and weaker during the day, with flies infected at night showing improved survival rates. The study suggests that circadian proteins play a crucial role in regulating immunity, particularly during restorative functions like sleep.
Researchers have discovered that manipulating salmonella bacteria in space can reduce their infectiousness. The study found that microgravity alters the expression of genes related to virulence, with pathogenic cells displaying a significant increase in disease potential.
A team of University of Cincinnati researchers has found that zinc plays a crucial role in the formation of biofilms that cause hospital-acquired infections. By removing zinc from bacterial cells, they were able to prevent biofilm formation and growth, offering new hope for preventing these infections.
Researchers have identified genetic clues to Pseudomonas aeruginosa's success that will aid in the design of novel therapeutic strategies for cystic fibrosis patients. The study found that prophage genes contribute to the strain's ability to adapt to specific environments.
The Infectious Diseases Society of America warns that new drugs are desperately needed to treat six drug-resistant bacteria, including MRSA and gram-negative pathogens. The society outlines steps to tackle the shortage and urges cooperation among industry, academia, and government.
Researchers at UCLA found that vitamin D stimulates cathelicidin production in placental tissues, enhancing antibacterial responses and protecting trophoblast cells from infection. The study suggests that pregnant women supplementing with vitamin D may enhance placental innate immunity.
Researchers have uncovered how a bacterial pathogen interacts with blood coagulation protein fibrinogen to cause MRSA infections. They found that agents could be designed to inhibit the ClfA–Fg interaction without interfering with platelet activation, offering new avenues for anti-staphococcal treatment.
An experimental TB drug called PA-824 has been found to work by producing nitric oxide gas, which kills the bacteria. The discovery could lead to the development of new drugs against other disease-causing bacteria, as humans lack the bacterial enzyme needed for the drug's effect.
Researchers discovered that serious gram-negative bacterial infections increase by up to 46% in summer compared to winter. The study found that Pseudomonas aeruginosa and Acinetobacter baumannii are the most affected bacteria.
Researchers found that brown rats in Europe carry several pathogenic species of Bartonella bacteria, including B. elizabethae, which can cause heart disease in humans. The study raises concerns about the existence of other reservoirs and vectors for this emerging infection.
Researchers at the University of Florida and the University of New Mexico have developed microscopic spheres that trap and kill harmful bacteria using conducting polymers and singlet oxygen. The spheres, dubbed 'roach motels,' showed promising results in killing over 95% of nearby bacteria after exposure to light.
Researchers found that Mycobacterium tuberculosis uses foamy macrophage formation to survive in infected individuals. These 'foamy' cells provide a nutrient-rich reservoir for the bacteria, allowing it to persist in a dormant state.
A new research study at Cardiff University aims to understand and regulate a patient's immune response to infections, which is crucial for treating end-stage kidney disease. The three-year grant will enable the multidisciplinary team to investigate the consequences of bacterial infection on patients with peritoneal dialysis.
Researchers from the University of Texas Medical School at Houston have discovered two new clones of antibiotic-resistant bacteria, MRSA and VREF, in Colombia. These super bugs are causing severe skin and soft tissue infections, with 20% mortality rate, and are resistant to common antibiotics.
Between 2002 and 2006, antibiotic use increased significantly at academic medical centers, driven by broader-spectrum agents and vancomycin. This trend is concerning, as it can lead to the development of drug-resistant bacteria, increasing illness, death, and healthcare costs.
New computer-based models describe how bacteria act within blood vessels and can be filtered out, offering insights into treatment options for bacteremia and sepsis. The models validate laboratory experiments in mice and have implications for developing new treatments for deadly bacterial infections.
A new national survey by Queen's University shows that despite increased investment in infection control since the SARS crisis, the number of resistant bacterial infections has multiplied. The study highlights a need for continued investment in infection control resources and programs to combat the growing threat of superbugs.
Researchers at Columbia University Medical Center have discovered that elevated levels of interleukin-1 beta can initiate the progression towards stomach cancer. The study found that IL-1β works by activating myeloid derived suppressor cells, which are pro-inflammatory and contribute to gastric inflammation.
A study found that disease-causing bacteria exploit the killing machinery of immune cells by increasing the production of an enzyme called arginase. This allows them to survive within macrophages, a type of white blood cell. The researchers observed improved outcomes in mice lacking this enzyme when infected with certain pathogens.
A review of commonly used C. difficile test kits found inaccurate results, leading to misdiagnosis and severe consequences. A new two-stage testing system is proposed to improve diagnostic accuracy and reduce false positives and negatives.
Researchers found a positive correlation between learning performance and immune response in bumblebees, contradicting previous predictions. Bumblebee colonies with strong learning abilities also showed improved resistance to bacterial infection.
A potent bacterial toxin targets human cells expressing Neu5Gc, a sugar incorporated from diet, making humans susceptible to disease. Red meat and dairy products are richest dietary sources of Neu5Gc, increasing the risk of E. coli infection.
A new model predicts that vaccinating infants with PCV7 can prevent over 357,000 deaths during an influenza pandemic while saving $7 billion in costs. The research also shows routine pneumococcal vaccination can reduce flu-related deaths and costs in a typical season.
A study found that individuals taking statins before hospitalization for pneumonia had a lower risk of death within 90 days, particularly among those older than 80 and with bacteremia. The benefits were seen primarily in the early phase of infection, suggesting that statin use is beneficial primarily in the initial stages of infection.
Phase III trials demonstrate iclaprim's effectiveness in treating complicated skin and skin structure infections caused by Gram-positive bacteria, including MRSA. The antibiotic showed a high clinical cure rate similar to linezolid and was well-tolerated with a favorable safety profile.
A Salmonella infection has been used to study the immune system of Drosophila melanogaster flies, revealing a key role for growth factor Decapentaplegic (Dpp) in regulating immune responses. Dpp mutant flies have impaired immune cell production and are unable to fight off pathogens.
MRSA infections cause only 14 percent of hospital infections, making targeted screening programs less effective. A study by VCU epidemiologists suggests that hospital-wide infection control practices can prevent more infections than focusing on a single pathogen.
NIAID scientists will present research on various infectious diseases, including noroviruses, Crohn's disease, and antibiotic-resistant infections. The talks aim to advance our understanding of these conditions and develop effective treatments.
Researchers found that Sharpie tips do not spread infection due to alcohol-based ink. In contrast, sterile markers with non-alcohol base ink were contaminated after 24 hours. The study suggests that reusable Sharpies can be used safely with proper cleaning and disinfection.
A new blood test has been shown to identify patients at risk of developing active tuberculosis (TB) with greater precision than the traditional skin test. The ELISpot blood test can pinpoint those who need preventative treatment, reducing unnecessary treatments and associated risks.
Researchers at Rutgers University have identified a new antibiotic target and mechanism that may lead to new treatments for tuberculosis. The study found that three antibiotics block the action of bacterial RNA polymerase, an enzyme essential for bacterial survival.
New research identifies key factor in treatment delay: flock management philosophy. Early identification and individualized treatment of footrot can reduce lameness incidence by up to 80%. The study suggests farmers have the skills to follow best practices but may need resources to implement them.
Researchers at UT Southwestern found that adding corticosteroids to traditional antimicrobial therapy can help people with pneumonia recover faster and have less inflammation in their lungs. The study also suggests a potentially more effective therapy for asthma attacks triggered by bacterial pneumonia.
Scientists have developed a rapid new technique called Rapid Virulence Annotation (RVA) to identify toxins and virulence factors made by bacteria that allow it to infect different types of organisms. This discovery could lead to new vaccines and anti-bacterial drugs, as well as help prevent diseases caused by disease-causing bacteria.
Researchers have discovered how bacteria respond to stress, shedding light on their infectious potential and the development of new drugs to combat bacterial infections. The stressosome molecule protects cells from external danger, triggering a response to adapt to changes in environment.
A significant proportion of people with no recent exposure to antibiotics developed community-acquired C. difficile infection, suggesting other risk factors may be at play. Researchers recommend considering C. difficile testing in community patients with diarrhea without a history of antibiotic use.
Researchers found that commensal bacteria DNA binds to receptors on immune cells, boosting protective T cells and clearing pathogens. This natural adjuvant mechanism enables the immune system to distinguish between harmful and beneficial microbes.
TB bacteria coat themselves with mannose, making them attractive to lung cells that clean up unwanted sugar. This allows the bacteria to slip by the immune system, leading to latent infection. Two strains of TB have been found that do not use this sugar coating, suggesting specific interactions between strains and human immune systems.
A study by the University of Nottingham aims to identify bacterial antigens that could lead to an effective vaccine against Bovine Mastitis. The researchers will use state-of-the-art molecular technology to determine which proteins are essential for infection.
Research funded by the Wellcome Trust suggests that inflammation in the brain resulting from infection or injury may accelerate the progress of dementia. Systemic inflammation can cause changes in memory and learning, leading to accelerated progression of dementia.
Research found that only 8.5% of patients accounted for 98% of guinea pig TB infections, highlighting the high infectiousness of inadequately treated drug-resistant TB patients. Implementing TB infection control measures can prevent airborne transmission in healthcare facilities.
Researchers found that multiple viral genomes can increase overall viral gene expression, leading to a nonlinear effect on gene networks controlling cell fate. This can result in the host cell entering a latent state rather than immediately being killed by the virus.
A study at UT Southwestern Medical Center found that a bacterial molecule must be inactivated, not just killed, for an animal to regain full health after infection. The 'signal' molecule, lipopolysaccharide (LPS), triggers the immune response and causes inflammation, but also suppresses it temporarily.
Despite medical progress, infective endocarditis death rates are rising again, driven by antibiotic-resistant bacteria and degenerative heart valve disease. Early surgery can save lives but requires expert care and precise timing.
Scientists have identified a direct role for the missing protein CFTR in cystic fibrosis, allowing it to recognize and clear lung-damaging bacteria. This breakthrough could lead to new treatments and prolong the lives of patients, who currently face a high risk of death before their 35th birthday due to chronic lung infections.
A new light-activated antimicrobial treatment has shown promise in killing a wide range of bacteria, including drug-resistant MRSA, in infected wounds and burns. The treatment uses indocyanine green dye activated by near-infrared light to produce toxic molecules that rapidly kill the bacteria.
Sticky glue secreted by Staphylococcus aureus bacteria may hold the key to creating an effective vaccine against MRSA. Researchers have found that manipulating this natural compound can stimulate the right immune response, offering a potential solution to the growing problem of antibiotic-resistant infections.
Scientists have discovered that milk may help prevent Staphylococcus bacteria from being killed by low concentrations of antibiotics. This could lead to a better control of mastitis, reduce disease costs, and lower the risk of antibiotic-resistant bacteria spreading.
Researchers found 15% of amniotic fluid samples harbored bacteria or fungi, contributing to premature birth. The heavier the burden, the more likely a baby was born younger and sicker.
Researchers at Johns Hopkins Bloomberg School of Public Health identified a new virus, AgDNV, infecting Anopheles gambiae mosquitoes. The virus, a densovirus, could be used to pass on genetic information to control malaria transmission.
Researchers discovered that Leishmania major parasites exploit the body's wound-healing response to sand fly bites, evading death and establishing long-term infection. Neutrophils play a critical role in the development of the disease, allowing parasites to survive inside them before escaping into macrophages.
Researchers at the University of California, San Diego, have discovered that flesh-eating bacteria can survive and spread in the body by degrading a key immune defense molecule. By inactivating this molecule, white blood cells become slower and weaker, allowing infections to spread out of control.
Scientists discovered a new Prevotella species in the mouth, which could help understand oral diseases. The finding confirms that oral bacteria can invade tissues and individual cells, paving the way for new prevention measures and treatments.
Researchers have made significant progress in understanding how Staphylococcus aureus bacteria bind to human proteins fibronectin, shedding light on serious heart infections. The study could lead to the development of new treatments for rare but life-threatening conditions like infective endocarditis.
A two-year study by UT Houston researchers found that 53% of women who tested positive for GBS during their first pregnancy were also positive during their second. The study suggests that retesting women in subsequent pregnancies may not be cost-effective due to the high recurrence rate.
A recent study published in the peer-reviewed journal AIDS found a significant association between bacterial vaginosis and an increased risk of HIV infection. The analysis of over 30,700 women from around the world showed that women with BV were more likely to acquire HIV than those without it.