Articles tagged with Bacterial Infections
Researchers discovered that neutrophils can form web-like structures called NETs outside cells, composed of nucleic acid and enzymes that catch bacteria and kill them. This process is equally effective as devouring bacteria, showcasing the neutrophil's role in defense even after death.
Researchers at the University of Cincinnati have created genetically modified skin cells that produce higher levels of human beta defensin 4 (HBD4), which killed more bacteria than normal skin cells. These cells may help combat infections in burn patients and reduce dependence on topical antibiotics.
Researchers at Purdue University have developed a new technique called desorption electrospray ionization (DESI) to rapidly detect and precisely identify bacteria. This method enables the analysis of living bacteria in under a minute, with high accuracy and specificity.
A systematic review found that over half of health-care workers in low- and middle-income countries have latent TB. The disease rates among HCWs were substantially higher than those in the general population. Research is needed to determine if control measures that reduced transmission in high-income countries will work elsewhere.
Researchers have developed pharmaceuticals that prevent E. coli from assembling pili, rendering it non-pathogenic and susceptible to elimination. This approach aims to slow the growth of antibiotic-resistant infections and minimize the development of resistance.
A team of University of Iowa researchers has made significant progress in understanding how the deadly Francisella tularensis bacterium evades the human immune system. The study found that the bacteria can inhibit the ability of white blood cells called neutrophils to kill it, allowing it to replicate and cause harm.
Researchers at UCSD have identified the internal compass that allows neutrophils to detect and migrate towards chemoattractants. This discovery could lead to novel anti-inflammatory drugs for treating chronic inflammatory diseases.
A new study by the University of Michigan found that the construction of new highways in rural Ecuador is linked to higher rates of diarrheal diseases and a breakdown of traditional social structures. The roads, which connect previously isolated villages, bring new people and bacteria, leading to increased infection rates.
Researchers at UT Southwestern Medical Center found that pregnant women who developed an infection of the placenta or nearby membranes have twice the risk of getting it in their second pregnancy. The study analyzed 28,410 women and found a genetic component that predisposes women to intrauterine infection.
Researchers discovered a new immune defense mechanism that produces a highly effective antibacterial compound called hypothiocyanite. However, this process is defective in airway tissue and cells containing the CF gene mutation, suggesting that thiocyanate levels may be low in CF patients.
A team of researchers at the University of Illinois has successfully synthesized an antibiotic called fosfomycin in a non-native host, paving the way for new treatments against bacterial infections. The development is significant as it addresses the rising threat of antibiotic resistance.
A new study led by Dr. Deborah Dean suggests that Chlamydia trachomatis is evolving rapidly through recombination, creating new strains and potentially new diseases. The bacterium's ability to customize its attack increases the risk of emerging diseases.
Scientists have discovered that the Chlamydia bacterium shares a common ancestry with plants, which could lead to the development of an effective new treatment for chlamydia. The discovery highlights similarities in genetic sequences and functions between the two organisms, providing a potential target for antibiotics.
Researchers at Children's Hospital of Pittsburgh have identified interleukin-23 (IL-23) as the key molecule causing destructive lung inflammation in cystic fibrosis patients. This discovery provides a specific target for developing new therapies to improve quality of life for these patients.
A study found that 92% of ear infection cases were caused by bacteria, while 70% were caused by viruses. Viruses can impair antibiotic efficacy, leading to partial effectiveness in treating AOM.
Researchers have exonerated Panton-Valentine leukocidin (PVL) as the primary virulence factor for community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) disease. The study found that CA-MRSA strains are equally effective at destroying human white blood cells with or without PVL present.
Research suggests that common antacids like lansoprazole can interfere with bacteria that cause plaque buildup and gingivitis. By disabling these bacteria, the compounds may prevent inflammation and damage to gums. If confirmed in future studies, these compounds could be widely available in oral care products.
Researchers at the University of Chicago have developed a vaccine that protects mice against multiple, drug-resistant strains of Staphylococcus aureus. The combined vaccine, based on four bacterial surface proteins, provided significant protection against five virulent strains and reduced bacterial load to undetectable levels.
A new Staphylococcus aureus vaccine has been developed by combining four proteins that generated the strongest immune response in mice, providing significant protection against various strains of the bacterium. The vaccine showed complete protection when tested against a human strain of S. aureus.
Researchers compared two microbial killing mechanisms: chemical toxins and viral parasites. Chemical toxins are superior for resident defense against invaders, while viral parasites facilitate faster invasion when carriers are rare.
Researchers at UTMB discovered that blocking aldose reductase can short-circuit sepsis, protecting heart function and reducing deaths. The compound is similar to an existing diabetes drug in stage three clinical trials.
A study found that patients who stayed in rooms previously occupied by MRSA carriers were more likely to acquire the bacteria, with an increased risk of 4.5% compared to 2.8%. Similarly, VRE acquisition was linked to prior occupant contamination, highlighting the importance of effective cleaning practices.
Researchers have developed a laser-based technology that can rapidly detect and identify many types of bacteria, making it three times faster and one-tenth as expensive as current methods. A second innovation uses chlorine dioxide gas to kill pathogens on produce, offering a highly effective and efficient solution.
A 4-year project called CONTENT is investigating the effects of gut infections on growth and development in young children in Latin America. The project aims to develop new diagnostic tools and prevention methods for gut infections, which cause significant deaths and health issues globally.
A study published in the Journal of Clinical Investigation has identified four proteins crucial for Entercoccus faecalis to form biofilms and cause endocarditis. Rats infected with E. faecalis lacking these proteins suffered less severe infections, suggesting potential new treatments.
The efficacy of AVELOX in treating complicated intra-abdominal infections was highlighted at ICAAC. The study showed that once-daily AVELOX monotherapy was as effective as combination therapy, with overall clinical cure rates of 80.9% and comparable duration of therapy.
A population-based surveillance study found that treatment with Tamiflu (oseltamivir) significantly reduced mortality from seasonal influenza in severely ill adults. The study, conducted in Ontario, Canada, showed a 71% reduction in death from influenza among treated patients.
Researchers have identified a protein, STM3117, that helps Salmonella evade immune cells, allowing the bacteria to multiply inside macrophages. The discovery presents a promising target for developing new drugs, vaccines, and rapid diagnostics to combat food poisoning caused by Salmonella.
A team of researchers led by Emanuel Hanski discovered a protein called SilCR that blocks the immune system's distress calls, making Group A Streptococcus bacteria more virulent. The findings could lead to new strategies for treating necrotizing fasciitis and halting its rapid destruction of tissue.
Scientists have discovered a natural protein produced by Bacillus thuringiensis that is highly effective at treating hookworm infections and curing anemia. The protein, called Cry5B, targets both developing and adult parasites, and can be produced inexpensively and safely for humans.
A new study reveals that the world's most widely used organic insecticide, Bacillus thuringiensis, requires the assistance of other microbes to perform its lethal work. The research demonstrates that the bacterium needs the presence of other bacteria in the insect gut to exert its influence.
Researchers at Baylor College of Medicine report a significant increase in MRSA muscle infections in children, highlighting the need for awareness and proper treatment. The study found that more than 75% of community-acquired staphylococcal infections are now resistant to commonly used antibiotics.
Researchers at EPFL discovered a new metabolic pathway that helps cells survive bacterial pore-forming toxins. The pathway triggers an inflammatory response and lipid metabolism to repair the cell membrane and protect against further damage.
Researchers have found a compound that can act like a bed of nails, fending off microbes from colonizing wound dressings and other implantable devices. Coating these devices with the compound could help prevent thousands of bacterial and yeast infections annually.
Researchers at the University of Wisconsin-Madison have created 'conversation stoppers' that can block bacterial communication signals, offering a new approach to combat deadly bacterial infections. These small organic molecules can be combined with antibiotics to deliver a powerful one-two punch and minimize resistance development.
A group of tannins found in cranberries can transform E. coli bacteria into spheres, alter cell membranes and make it difficult for them to bind to cells. The results suggest whole cranberry products may have the greatest health effects against certain infections.
A study published by Infectious Diseases Society of America found that antibiotic-resistant bacteria are causing an increase in muscle infections, particularly among children. The researchers discovered a specific strain of Staphylococcus aureus associated with more severe disease, and emphasized the need for physicians to consider ini...
The Pall eBDS System is a highly sensitive culture-based test that detects bacterial contamination of red blood cells, reducing the risk of sepsis and death from transfusion. The system's novel approach to detection measures oxygen consumption as a marker for bacteria, allowing for effective detection of commonly found contaminants.
St. Jude researchers have solved a 25-year mystery by discovering the first biochemical step that many disease-causing bacteria use to build their membranes. The discovery holds promise for effective, new antibiotics against these bacteria, which would not cause dangerous side effects.
Researchers developed a novel approach to assessing the risk of water-borne diseases, including leptospirosis, by measuring bacterial DNA in environmental waters. The method provides a quantitative risk assessment for human disease and has implications for health departments monitoring water safety.
Researchers report first case of total suppression of male killing in a butterfly, revealing genetic conflict between elements promoting life and death. Breeding experiments show that counteracting elements can spread quickly through the population, potentially leading to widespread disappearance of male-killing bacteria.
Researchers have demonstrated the effectiveness and safety of a new drug, daptomycin, for treating bloodstream and heart infections caused by Staphylococcus aureus bacteria. The FDA has approved the drug for these types of infections, offering an alternative to vancomycin.
A study by Penn State researchers found that breaks in hibernation may be an evolutionary mechanism to combat bacterial infections. Regular wake-ups help animals avoid serious infection while minimizing energy loss.
Researchers are investigating antioxidants for preventing or treating rickettsia bacteria, a deadly tick-borne illness. The study, funded by the National Institute of Allergy and Infectious Disease, aims to identify novel therapeutic targets for rickettsial diseases.
Researchers found different types of immune response in children with varying levels of infection, including pro-inflammatory and regulatory responses. These findings may help design vaccines to prevent trachoma infection.
Patients with highly resistant Pseudomonas aeruginosa are twice as likely to die from hospital-acquired pneumonia. Inappropriate antibiotic treatments contribute to higher mortality rates.
Scientists have identified two genes that Wolbachia manipulates when infecting the fruit fly Drosophila simulans, shedding light on the genetic basis of Wolbachia infection. This discovery could lead to the development of genetically modified mosquitoes that can help control malaria transmission.
A recent study published in Annals of Surgery found AVELOX to be equally effective as a multi-dose combination therapy for treating intra-abdominal infections, with improved cure rates among hospital-acquired infections. The treatment showed a significantly higher cure rate and better safety profile compared to the standard regimen.
Researchers developed a vaccine using irradiated Listeria monocytogenes bacteria, providing better protection against disease than traditional heat-killed vaccines. The irradiated vaccine retained the ability to activate the immune system through Toll-like receptors, promoting long-term immunity.
The launch of Tygacil (tigecycline) in the UK marks a significant step forward in the fight against antibiotic-resistant bacteria, including MRSA and Escherichia Coli. The new antibiotic has been developed to overcome common mechanisms of resistance and offers a single effective therapy for complicated skin and soft tissue infections.
Researchers have identified a possible mechanism used by an important motor protein that enables bacteria to travel through the bloodstream and infect organs such as the heart. The discovery may lead to the development of new pharmacological therapies that can target and kill bacteria, preventing or minimizing damage to the heart muscle.
A new study found a significant link between periodontal bacteria and the risk of heart disease, specifically acute coronary syndrome. The research suggests that specific bacteria, including T. denticola, T. forsythia, and streptococci spp, may contribute to inflammation and increased white blood cell counts.
Researchers from Michigan State University have uncovered a key bacterial protein that disables plant defense proteins, allowing bacteria to invade and destroy crops. This discovery has the potential to inform novel disease control strategies, particularly for human bacterial pathogens.
A groundbreaking study found that nearly all children with chronic otitis media have resistant biofilm bacteria in their middle ears, rendering antibiotics ineffective. This discovery sheds new light on the treatment of chronic ear infections and suggests alternative approaches such as probiotics.
A $2.8M NIH grant enables researchers to explore a harmless bacteriophage, nicknamed the 'Bronx Bomber,' that disrupts the biofilm coating of Mycobacterium smegmatis, potentially leading to more effective TB treatments.
Researchers at Brown University have developed a technique to coat implants with zinc or titanium oxide nanosurfaces, significantly reducing bacterial growth and promoting bone growth. The new method has the potential to lead to safer, longer-lasting implants for millions of Americans undergoing joint replacements.
Researchers discovered that listeria bacteria first infect the placenta before using it as a breeding ground and then infecting other organs. The bacteria proliferate rapidly in the placenta before pouring out to cause infections.
A study found that external 'condom' catheters reduced the risk of urinary tract infections by 80% compared to indwelling catheters. The condom catheters were also associated with lower rates of discomfort and pain, making them a more comfortable option for patients.
Researchers at UT Southwestern Medical Center identified the QseC receptor used by a diarrhea-causing strain of E coli to initiate infection. By using phentolamine, an alpha blocker drug, they successfully impeded signaling to the receptor, blocking bacterial infections.
Researchers have discovered a bacteriophage with a structure similar to human rotavirus, providing new information on the formation of viral particles and genetic distinction. This finding sheds light on the evolutionary origins of viruses, which likely share common ancestors across species.