Articles tagged with Antibiotics
Researchers at Houston Methodist have identified a new strain of bacteria, Streptococcus dysgalactiae subspecies equisimilis (SDSE), linked to increasingly severe human infections. The study used integrative analysis to investigate the genome, transcriptome, and virulence of SDSE strains, shedding light on their molecular pathogenesis.
Researchers have found that MRSA has a double defence mechanism against antibiotics, involving an alternative division mechanism that allows it to replicate in the presence of antibiotics. This new insight offers hope in treating the life-threatening superbug and other infectious diseases. Understanding this process is crucial for deve...
A recent study by Mizzou researchers found that infections are a significant problem for white-tailed deer on Missouri farms. The study identified the three most common types of bacteria causing pneumonia in farmed deer, providing actionable data for veterinarians and farmers to make informed decisions.
Doctors at Mayo Clinic used a new catheter-based approach to draw out resistant pockets of infection in the heart without surgery. Over 90% of participants had their infection cleared, with lower in-hospital mortality compared to those whose infections remained.
The study found that P. aeruginosa adapts to the lung's mucus by relying on sugars and lactate, but also needs to synthesize essential nutrients through metabolic independence. Biofilm formation imposes a metabolic burden, slowing down the bacteria's ability to spread, while disrupting biofilms makes them more vulnerable to antibiotics.
Researchers at Aarhus University have decoded part of the bacterial defense mechanism against antibiotics, providing a crucial step towards treating resistant MRSA infections. Understanding the molecular composition of the biofilm-forming protein PSMα1 could lead to new strategies and treatments to prevent biofilm formation.
Researchers developed a nanomedicine that attacks bacteria at the molecular level, reducing antibiotic resistance and side effects. The technology releases medication only when required, ensuring patients take exact amounts to fight infections.
A new study has found that rifaximin, an antibiotic commonly prescribed for liver disease patients, is driving the emergence of a deadly superbug. The antibiotic triggers specific changes in bacteria that make them resistant to last-resort antibiotics like daptomycin.
Researchers develop click-to-release technique to activate colistin in targeted manner, killing bacteria without harming kidneys. The approach reduces side effects and makes antibiotics more tolerable for patients.
Researchers at University of Zurich used AI to analyze antibiotic resistance using GPT-4 model, creating EUCAST-GPT-expert system for accurate interpretation of antimicrobial resistance mechanisms. The AI system performed well in detecting certain types of resistance but had limitations, while human experts were more accurate but slower.
A team of researchers from the University of Florida Health has been awarded a significant grant to explore the use of combination antibiotics to combat antibiotic-resistant bacteria. The study aims to understand the molecular mechanisms behind bacterial resistance and develop new treatment strategies to tackle deadly superbugs.
Researchers from Duke University have discovered the mechanism behind the discrepancies in how resistant infections react to combination treatments. The study found that bacteria with a higher level of 'selfishness' are more likely to thrive after treatment, while less selfish strains benefit more.
A new study from UCSF has found that ChatGPT overprescribes in emergency care situations, providing unnecessary x-rays and antibiotics. The AI model was less accurate than resident physicians, with a tendency to err on the side of caution. Researchers emphasize the need for better frameworks to evaluate clinical information before AI c...
Scientists have found a way to pinpoint single bacteria that are resistant to antibiotics, making it easier to choose the right treatment. This breakthrough could lead to improved treatment outcomes for patients with Staphylococcus aureus infections.
A study found that doxycycline post-exposure prophylaxis (doxy-PEP) did not significantly alter the overall composition of gut bacteria in individuals who took it for six months. However, the researchers noted signs of resistance building against tetracycline, a class of antibiotics to which doxycycline belongs.
A new study has discovered a novel semi-synthetic compound derived from natural compounds that exhibits potent activity against Mycobacterium tuberculosis, including multi-drug resistant strains. The compound, BPD-9, provides a promising chemical scaffold for developing new anti-tuberculosis drugs.
Researchers at Texas Biomedical Institute have developed a TB therapy that does not interfere with combined antiretroviral therapy (cART) in patients with HIV. The host-directed therapy blocks an immune system protein and has shown improved control of TB when used with antibiotics.
In this study, researchers from Tokyo Institute of Technology found that hydrogen sulfide-dependent transcription factor YgaV regulates iron uptake dynamics in Escherichia coli. The team observed elevated intracellular H2S levels resulting in increased antibiotic resistance and upregulated genes involved in sulfur metabolism.
The European capacity for antibiotic research and development requires sustained investment to combat growing resistance. Collaboration and risk-sharing can help keep companies in anti-infective drug development, as a temporary funding strategy may lead to lost efforts.
Researchers argue that placental pathology is underutilized clinically and deserves routine obstetric and neonatal care, as well as more research attention.
A new study estimates that more than 1 million people died each year due to antibiotic-resistant infections between 1990 and 2021. The study predicts that this number could increase to nearly 2 million by 2050, with a significant age-related shift in the impact of AMR on children under five years old.
Research from Edith Cowan University highlights the need for accurate testing to prevent antibiotic allergies in children. Most suspected antibiotic allergies are inaccurate, with symptoms often caused by underlying illness. Testing once the child is well enough can help identify true allergies and ensure timely treatment.
Repeated antibiotic use can cause defects in the gut's protective mucus barrier, even months after treatment. This is due to changes in the microbiota or direct effects of antibiotics on the mucus layer. The findings suggest that antibiotics should be used responsibly to prevent long-lasting damage.
Researchers have discovered a new class of natural antimicrobials called microcins that can target specific strains of bacteria causing cholera, inflammatory bowel disease, and colon cancer. Microcins are highly selective and can potentially remove unwanted bacteria without disrupting the human gut microbiome.
A study by Virginia Tech undergraduate Megan O'Hara found that surface properties significantly influence bacterial twitching motility, allowing for rapid colonization and infection. By manipulating surface properties with detergents like bile salts, researchers can alter the functionality of type IV pili, a critical virulence factor.
A study found that medical clowns can reduce hospital stays by an average of 43.5 hours and decrease IV antibiotic use for children with pneumonia. The clowns' visits also led to lower respiratory rates, heart rates, and inflammatory markers.
Researchers at Gladstone Institutes have developed a streamlined way to engineer bacteriophages, viruses that naturally kill bacteria. The new technique uses retrons to edit phage genomes, allowing for the creation of numerous variants and paving the way for alternative treatments for antibiotic-resistant infections.
The new guideline updates treatment recommendations for Helicobacter pylori infection, shifting away from proton pump inhibitor-clarithromycin triple therapy. Bismuth quadruple therapy and other alternatives are now recommended for treatment-naïve patients.
A new narrow-spectrum antibiotic, FP 100, has been found to effectively eliminate Fusobacterium nucleatum without harming the oral or gut microbiomes. This breakthrough discovery holds significant implications for treating severe gum disease and preventing related systemic conditions such as colon cancer and Alzheimer's disease.
Researchers have identified two compounds with strong antivirulence activity from actinobacteria in the Arctic Sea, targeting EPEC bacteria that cause severe diarrhea. The compounds inhibit virulence factor formation and binding to host cells, reducing disease severity and potential for resistance.
Researchers found that Chlamydia bacteria can persist in the intestines of humans, where they form a permanent reservoir and evade antibiotic treatment. The bacteria preferentially infect the inner cell layer of intestinal organoids, but not the outer epithelial layer.
Researchers at the University of Virginia School of Engineering and Applied Science have designed a drug-carrying molecule that can slip past the lung's natural defenses. The nanocarrier, called PEG-BB, is shaped like a bottlebrush and mimics the properties of mucus, allowing it to move quickly through the airway.
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 have identified dozens of potential new antibiotics in the human gut microbiome, with one candidate showing promise against multidrug-resistant infections. The discovery uses artificial intelligence to analyze vast amounts of biological data and mine the world's biological information as a source of antibiotics.
Using Explainable AI (XAI), researchers analyzed AI model predictions for antibiotic candidates, identifying critical molecular structures and variables. This helped improve predictive models, which can now be trained on what's truly important for activity.
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.
Scientists studying environmental bacteria have determined a protein's essential role in maintaining the germ's shape. Loss of the protein OpgH disrupts the bubble-like cell envelope, resulting in the cell's death. This finding could lead to new drug targets and advance the search for better antibiotics.
A recent study found that C-section antibiotics have a subtle impact on the infant gut microbiome, whereas diet has a significant impact. The study analyzed data from 172 infant samples and found that feeding mode explained 12% of variation in overall infant gut microbiome composition.
MIT chemists have developed a new way to synthesize complex oligocyclotryptamines found in plants, which could hold potential as antibiotics, analgesics, or cancer drugs. The approach allows for precise assembly of the rings and control of the 3D orientation of each component.
Two classes of commonly prescribed oral antibiotics are associated with the greatest risk for severe drug rashes that can lead to emergency department visits, hospitalizations, and even death. Researchers suggest using lower-risk antibiotics when clinically appropriate.
Commonly prescribed oral antibiotics increase risk of serious cutaneous adverse drug reactions compared to macrolides. Sulfonamides and cephalosporins carry the highest risk, prompting prescribers to opt for lower-risk alternatives when clinically appropriate.
A new study from the University of Surrey found that higher faecal bacterial diversity at one month old is positively associated with the athletic performance of Thoroughbred foals. Lower bacterial diversity in early life also increases the risk of respiratory disease and soft-tissue issues.
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...
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.
Researchers have identified a group of molecules called callyaerins that can act against tuberculosis by targeting a specific membrane protein of the bacterium Mycobacterium tuberculosis. These substances inhibit bacterial growth without affecting human cells, offering a promising new approach to treating the disease.
Researchers at the University of Texas at Austin have leveraged AI to develop a new, safer antibiotic that targets specific bacterial membranes while minimizing harm to human cells. The AI-powered approach has identified a promising lead compound with potential for treating multidrug-resistant bacterial infections.
Researchers at Ben-Gurion University of the Negev have developed a new compound, PL-18, which disrupts bacterial quorum sensing and biofilm formation. This compound has shown promise in reducing bacterial virulence and inhibiting iron uptake, suggesting potential applications in combating antibiotic-resistant bacteria.
Research found higher bacterial concentrations in keloid tissue, especially in deep layers, leading to increased inflammation and fibroblast production. Antibiotics and phage treatments may help reduce bacteria and improve treatment outcomes for keloids.
Researchers at the University of Illinois Chicago have developed a new dual-action antibiotic that targets two different cellular targets, making it nearly impossible for bacteria to evolve resistance. The antibiotic works by disrupting protein production and DNA structure, rendering random mutations ineffective.
Random antimicrobial peptide mixtures significantly reduce the risk of resistance evolution compared to single peptides. These findings support the development of new antimicrobial strategies to tackle growing antibiotic-resistant threats and safeguard public health.
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.
Researchers found that rotifers acquire genes from bacteria and produce resistance weapons, such as antibiotics and antimicrobial agents. The team's findings suggest that rotifers could give important clues in the hunt for new antibiotics to treat human infections.
Researchers have identified a mechanism in dogs that may render multiple antibiotic classes ineffective due to the loss of function of specific genes. This discovery opens up new avenues for therapies to treat both animals and humans, and establishes clinical infections in dogs as a surveillance approach for public health.
Researchers developed a strategy to identify new antimicrobial drugs with therapeutic promise from bacterial datasets. PHAb10 and PHAb11 showed robust antibacterial activity against various bacterial species, including those resistant to traditional antibiotics.
Research from Monash University found that early exposure to antibiotics can trigger long-term susceptibility to asthma. A molecule called IPA, produced by healthy gut bacteria, has the potential to prevent asthma in children at risk.
Researchers analyzed genomic data and human travel patterns to understand the spread and evolution of Streptococcus pneumoniae. The study found that a pneumococcal vaccine reduced antibiotic resistance but allowed non-targeted strains to gain a competitive advantage, suggesting short-lived protection.
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.
The University of Texas at Arlington's Junha Jeon is developing transition metal-free cross-coupling technologies using arynes to deliver medications safely and effectively. This project aims to improve the production of drugs, particularly for cancer treatment, by reducing impurities left behind by metals.
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.
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.