Articles tagged with Bacterial Infections
Scientists have identified specific bacterial strains contributing to inflammatory bowel disease and developed a cocktail of specialized viruses to target them. The approach harnesses the precision of phages to selectively eliminate harmful gut bacteria, showing promise for treating Crohn's and ulcerative colitis.
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.
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.
A new study from the University of Sheffield suggests that giving antibiotics to those at high risk of developing a life-threatening heart infection significantly reduces their risk. Current UK guidelines against routine use of antibiotics for these patients may be putting them at unnecessary extra risk.
Researchers at Cedars-Sinai Medical Center have developed a new method to identify which human gut microbes contribute to inflammatory diseases. By analyzing protein levels in blood serum, the team discovered specific bacteria that trigger immune activation and inflammation.
A new study published in PNAS found that angiotensin-II, a blood pressure hormone, can enhance bacterial killing functions, increase bacterial clearance, and modulate systemic inflammatory responses in sepsis. The treatment improved immune function without increasing inflammatory injury.
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.
A new study published in AJIC suggests that a combination of betadine and silver colloidal gel is more effective than either material alone for inhibiting the growth of common infection-causing bacteria. The findings could help medical professionals better treat and prevent serious infections in large wounds, including burns.
Researchers at MIT discovered a peptide that sequesters heme, an iron-containing molecule, and sends bacteria into an iron-starvation mode, potentially treating diseases like periodontal disease and sickle cell disease. This finding could translate to therapeutic applications for patients with excessive heme in their blood.
Researchers have discovered a new molecule, fabimycin, that effectively treats over 300 drug-resistant bacteria in lab experiments and mice with pneumonia and urinary tract infections. The compound reduces the amount of drug-resistant bacteria to pre-infection levels or below, outperforming existing antibiotics at similar doses.
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.
A study by the University of the Basque Country detected Arcobacter species in 22.3% of analyzed food samples, with A. butzleri being the most abundant. The bacteria were found to possess virulence genes and could cause gastrointestinal disorders. Biofilm formation on food contact surfaces was also observed.
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 from NUS Medicine developed a probiotic that detects antibiotic-induced microbiome imbalance and regulates bile salt metabolism to prevent Clostridioides difficile infection. The probiotic significantly reduced CDI in laboratory models, demonstrating a 100% survival rate and improved clinical outcomes.
Researchers discovered that giant viruses, known as bacteriophages, construct a shielded compartment that acts like a nucleus in human cells, protecting their genetic material. The nuclear-like structure allows certain components inside while serving as a defense mechanism against bacterial threats.
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.
Researchers studied the immunogenic potential of the 4CMenB vaccine in hematopoietic stem cell transplant recipients, finding 90% of patients developed protective antibody levels after two doses. The trial supports including meningococcal B vaccination alongside A, C, W, and Y vaccines from 6 months post-transplant to improve protection.
Researchers at TUM have developed a cell-free production method for bacteriophages, which can be used to target and combat specific types of antibiotic-resistant bacteria. The new technology has the potential to produce personalized therapeutic phages for clinical trials, addressing multi-resistant germ infections.
The new phage T4-COVID-19 vaccine elicits superior mucosal immunity in mice, inducing robust humoral and cell-mediated immune responses. The vaccine provides complete protection against SARS-CoV-2 variants with minimal lung lesions and no impact on gut microbiota.
Scientists identified that retrons encode toxin proteins kept inactive by a small DNA fragment, unleashing them upon viral attacks. The EMBL team discovered how retrons form antitoxins and found natural switches to trigger growth inhibition complexes.
Researchers at Johns Hopkins Medicine found that Clostridioides difficile (C. difficile) bacteria may cause colorectal cancer in younger adults. The bacterium causes serious diarrheal infections and is linked to approximately 500,000 infections annually in the US.
Researchers found that breastfeeding provides an immune boost to infants, reducing the risk of respiratory infections such as pneumonia. However, milk also mounts responses to beneficial gut bacteria, which can be disruptive and increase the risk of gastrointestinal infections.
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.
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 identify key enzyme CbrR and cyclic-di-GMP as crucial for Campylobacter jejuni's motility and biofilm formation. By targeting these elements, scientists aim to develop a safe molecule to prevent infection.
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.
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.
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.
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 highly antibiotic-resistant strain of MRSA has emerged in livestock over the past 50 years, primarily due to widespread antibiotic use in pig farming. The CC398 strain has maintained its resistance and is capable of rapidly adapting to human hosts, posing a significant threat to public health.
Bacteria's extreme lifestyle change during UTI infection cycles may hold clues to combating antimicrobial resistance and damage. Researchers used advanced microscopy to study the reversal of filamentation, shedding light on a previously unknown mechanism.
Researchers discovered how Mycobacterium tuberculosis can evolve efficiently by forming complex biofilms due to genetic mutations. The study sheds light on the bacterium's robustness and identifies potential vulnerabilities for developing more effective treatments.
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.
The study reveals that the 16th-century E. coli acquired novel genes and antibiotic resistance over time, posing a significant threat to human health despite not causing pandemics. The reconstructed genome provides valuable insights into its evolution and potential role as an opportunistic pathogen.
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 identified a set of proteins called antiactivators that prevent signal short-circuiting in quorum sensing, allowing bacteria to communicate effectively as a group. This finding opens the door to potential new antibiotics and provides background knowledge for synthetic biology applications.
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.
Researchers have discovered proteins that mediate intimate contacts between bacteria, enabling DNA transfer and resistance to antibiotics. Understanding this process can help develop new approaches to slow the spread of antimicrobial resistance.
A new preclinical study by Weill Cornell Medicine researchers shows that naturally-produced IgG antibodies in breast milk can protect infants from infection-induced diarrheal illness. These antibodies enhance infant immunity against bacterial pathogens causing gastrointestinal diseases.
A new study reports on 20 case studies of phage therapy, showing the therapy's success in over half of patients and no adverse effects. The treatment has been shown to be effective against treatment-resistant Mycobacterium infections, with some patients experiencing spectacular outcomes.
Researchers used bacteriophage therapy to treat 20 complex, antibiotic-resistant lung infections in a clinical trial, resulting in no adverse reactions. More than half of treated patients experienced symptom improvement or reduced bacterial presence. The study's findings advance the promise of phage therapy as an alternative to traditi...
Researchers developed CRISPR-SeroSeq technology to identify multiple strains of salmonella in live bird samples, revealing three serotypes known to cause human illness. The study provides a framework for poultry producers to inform their salmonella control practices and reduce the risk of contamination.
A study published in eLife has shown that fast-growing bacteria can resist antibiotics by displaying higher ribosome expression, allowing them to avoid macrolide accumulation. This finding highlights a new survival strategy for bacteria and offers potential avenues for developing improved antibiotic compounds.
A new study from University of Minnesota Medical School suggests Fecal Microbiota Transplantation (FMT) is an optimal and cost-effective treatment option for the first recurrent Clostridioides difficile infection. The research model indicates it's effective and cost-effective when used in patients after a single episode of recurrent CDI.
Researchers at Karolinska Institutet have identified a new vaccine candidate based on nano-sized membrane vesicles that provide protection against multiple pneumococcal strains. The vaccine target two conserved lipoproteins MalX and PrsA, showing serotype-independent cross-protection.
A study found that Brazil's Salmonella vaccine for poultry contributed to the emergence of antibiotic-resistant strains. However, these resistant bacteria have not increased food poisoning cases in humans in the UK.
The article reports on the rapid transmission of monkeypox in Europe, with cases detected in Italy, Portugal, the UK, and Australia. Human-to-human transmission has been confirmed, particularly in sexual networks, raising concerns about the virus's epidemiology and control.
Researchers at Rice University have developed molecular machines that can kill bacteria using visible light, targeting gram-negative and gram-positive bacteria. The breakthrough study uses rotors spinning at millions of times per second to break up biofilms and persister cells, making these infections more treatable.
Researchers from Arizona State University investigate autoantibodies in healthy individuals, revealing their pervasiveness and role in human health and disease. The findings aim to improve diagnostics and therapeutics for a range of illnesses.
A new study found that microgravity analog culture profoundly affects the microbial infection process in 3-D human tissue models. This is critical for ensuring astronaut health on extended space missions and sheds light on mysterious processes of infection on Earth.
A new class of antibiotics has been discovered that is highly effective against drug-resistant tuberculosis, with low toxicity and a high level of safety. The new drugs, called PPs, are targeted at the PE_PGRS57 gene and show promise as an alternative to current treatments.
A new platform and genomic database has been developed to monitor and control multidrug-resistant bacteria, with over 500 human pathogens already available. The database aims to provide strategic information on microorganisms classified as a “critical priority” by the World Health Organization.
A recent study published in JAMA Network Open found that more than 70% of primary care physicians reported prescribing antibiotics to treat asymptomatic bacteria in urine tests, defying medical guidelines. This practice can lead to adverse health effects and contribute to antibiotic resistance.
Researchers at Aston University have developed a new antibiotic combination that successfully treated a cystic fibrosis patient's deadly lung infection. The combination of imipenem/relebactam with amoxicillin eradicated the infection, enabling the patient to receive a lifesaving lung transplant.
A new study found that unnecessary antibiotic prescriptions for nonhospitalized children resulted in 2.8 million cases of avoidable infections, costing the US at least $74 million. Children prescribed inappropriate antibiotics were up to eight times more likely to develop complications such as diarrhea and skin rashes.
New data analyses from RedHill's Talicia H. pylori eradication clinical trials program showed high eradication rates and favorable safety and efficacy profiles in patients with diabetes. The study found that Talicia maintained high eradication rates of 91.7% and 84.1% in patients with and without diabetes, respectively.
Researchers found that birds infected with lipopolysaccharide from bacteria reduced their body temperature by 2°C to conserve energy. In contrast, chicks fed and warm did develop fever. The study suggests that regulated hypothermia is an energy-saving response during severe infection, prioritized over maintaining a fever.
Researchers have found that light-based therapies such as photobiomodulation and photodynamics can effectively treat a range of post-COVID complications, including muscle and joint damage. The studies, conducted in Brazil, utilized laser irradiation, negative pressure, and other technologies to improve symptoms and promote healing.