Articles tagged with Antibiotic Resistance
Researchers found that antibiotics offer little benefit for patients with acute rhinosinusitis-like complaints. The study suggests that doctors should not prescribe antibiotics to adults with rhinosinusitis symptoms lasting longer than 7-10 days, as there is no clear subgroup of patients who would benefit from treatment.
Researchers have uncovered how Streptococcus pneumoniae builds its penicillin immunity and opened up ways to disrupt this mechanism, potentially restoring penicillin as a weapon against the bacterium. The discovery also offers hope for treating MRSA using penicillin.
The National Institute of Allergy and Infectious Diseases (NIAID) is addressing the growing challenge of antimicrobial resistance through a multifaceted research approach. The institute is investing over $800 million annually in basic and translational research to understand the causes, consequences, and treatments of antimicrobial dru...
Researchers have solved the structure of two proteins that enable bacteria to develop resistance to various types of antibiotics, providing insights into their evolution and design strategies for new drugs. This discovery could aid in developing effective treatments against antibiotic-resistant infections.
Recent reports show antibiotic-resistant E coli strains causing bloodstream infections, with β lactamases contributing to resistance. Rapid identification of these resistant bacteria is crucial to prevent their spread and select effective antibiotics.
The study proposes antimicrobial cycling and patient isolation as effective strategies to curb dual-resistant bacteria in hospitals. The model's results indicate that these methods can reduce the prevalence of dual resistance, making them crucial in combating the growing threat of superbugs.
Researchers found that biofilms composed of resistant microbial cells are the cause of corneal infections fueled by soft contact lens use. They recommend improved testing with modern fungal strains and adherence to lens care best practices.
A new strain of MRSA bacteria has been discovered in sexually active gay men, showing a high rate of transmission through intimate contact and skin-to-skin contact. The study found that these men are 13 times more likely to be infected than the general population, highlighting the need for increased awareness and prevention measures.
Researchers at the University of Manchester have pioneered new methods to modify antibiotics' molecular structure, enabling the development of new types of antibiotics capable of combating increasingly resistant bacteria. This innovation provides access to thousands of lipopeptide variants that cannot be produced easily in any other way.
A new model of HIV dynamics accurately predicts the emergence and growth of recombinant forms of the virus in infected individuals. This framework also establishes scaling relationships between the prevalence of these resistant strains and overall infection extent.
A recent study found that methicillin-resistant Staphylococcus aureus (MRSA) infections are more common than previously thought, affecting certain populations disproportionately. The study estimated that 94,360 invasive MRSA infections occurred in the US in 2005, resulting in 18,650 deaths.
Researchers detected BlaKPC gene in Midwestern patients, indicating spread of antibiotic-resistant bacteria. The gene's presence can impact treatment options and contain its spread through isolation.
A team of researchers at the University of Illinois found that tetracycline resistance genes migrate from hog waste lagoons into groundwater wells, often diluting or amplifying these genes. The study, published in Applied and Environmental Microbiology, tracks the passage of these genes across species and environments.
The study aims to identify effective off-patent antibiotics for treating uncomplicated skin and soft tissue infections caused by MRSA. Researchers hope to find an optimal treatment to stop progression of serious infections or prevent recurrence, with Olive View–UCLA Medical Center as the principal study site.
Research by Dr James Chin and colleagues reveals that antibiotics not only kill bad bacteria but also maintain a pool of resistant genes within microbial communities. This means that subsequent therapy with another antibiotic may be ineffective due to increased resistance.
General Practitioners (GPs) are still over-prescribing antibiotics for common infections like sore throats and sinusitis, hindering efforts to combat antibiotic resistance. The analysis of the world's largest primary care database found that prescriptions for these conditions rose to 80% despite guidance warnings.
A review of type 2 diabetes treatment found older agents have similar or superior effects on glycemic control and intermediate endpoints compared to newer, pricier medications. Gonorrhea is becoming resistant to fluoroquinolone antibiotics, leading to recommendations for alternative treatments.
A study published in JAMA Network found that antibiotic treatment after a first urinary tract infection (UTI) in children may not reduce the risk of recurrent UTIs, but increases the risk of resistant infections. The study identified risk factors for recurrent UTI and estimated the effectiveness of antimicrobials in preventing recurrence.
Scientists have found a key weakness in the enzyme that helps bacteria swap genes for drug resistance, allowing them to block the spread of antibiotic-resistant microbes. Bisphosphonates, widely prescribed for bone loss, can annihilate antibiotic-resistant bacteria in laboratory cultures.
Research suggests that food can be an important avenue for antibiotic-resistant bacterial evolution and dissemination through horizontal gene transfer with commensal bacteria. Many food samples tested contained antibiotic-resistance gene-carrying bacteria, highlighting the prevalence of these microbes in the retail food supply.
A study found XDR-TB accounts for 8% of multi-drug-resistant cases in India, compared to 4% in the US. The disease leaves patients virtually untreatable with currently available anti-TB drugs, with a high mortality rate of 42%.
A University of Georgia study reveals high levels of antibiotic-resistant bacteria in chickens raised on antibiotic-free farms and lab conditions. The resistances don't come from antibiotic use, suggesting that banning farm use won't help, but may require new management practices to reduce the risk of human illness.
The MOSAR project aims to control and study antimicrobial resistance in hospitals, with a focus on four types of microorganisms. IDIBAPS-Hospital Clínic participates in the network, led by INSERM, and has expertise in bacteriology and public health.
A randomized double-blind trial found that macrolide antibiotics increased resistance in oral streptococcal flora, with azithromycin showing a higher effect. The study highlights the ecological side-effects of antibiotics and suggests a causal link between antibiotic use and resistance.
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.
The global epidemic of multi-drug resistant tuberculosis (MDR-TB) may be larger than previously thought, with an estimated 424,000 cases worldwide in 2004. High levels of resistance were found in countries such as China, India, and Russia.
The study reveals that asymptomatic carriers played a crucial role in the evolution and global transmission of Typhi, leading to antibiotic resistance and hindering treatment efforts. The research also highlights the importance of healthy carriers in facilitating the spread of the bacteria.
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 three-year study funded by the CDC found a link between consuming poultry, handling raw poultry, and increased risk of antibiotic-resistant bacteria. The investigation focused on the use of virginiamycin in poultry, which is linked to an increased risk of developing Synercid-resistant E. faecium.
A study by Indiana University researchers found that hospitals implementing specific measures to control antibiotic use were more likely to succeed in controlling antibiotic resistance. Measures such as limiting broad-spectrum drug availability and restricting formularies were associated with lower rates of antibiotic resistance.
Two studies reveal that contaminated carrots are a source of Yersinia pseudotuberculosis infection, while exposure to antibiotic-treated poultry increases the risk of antibiotic-resistant gut bacteria. The findings highlight the need for improved food safety regulations and hygiene practices to prevent such outbreaks.
Researchers at Cardiff University have been awarded £800,000 to commercially develop a protein-based therapeutic for treating infectious diseases. The 'Resolution Therapeutics' approach aims to enhance the body's natural defence mechanisms to promote infection clearance and reduce inflammation.
Key findings highlight the need for rapid screening programs and strict contact precautions in hospitals to prevent MRSA transmission. Community-acquired MRSA poses a critical public health priority, requiring immediate action to control outbreaks and prevent the spread of antibiotic-resistant bacteria.
Twenty-four scientists honored for developing life-saving antibiotics, chemotherapy treatments, eco-friendly refrigerants, and safer toxic gas transport methods. Their innovations have significantly improved human well-being and the environment.
Patients with highly resistant Pseudomonas aeruginosa are twice as likely to die from hospital-acquired pneumonia. Inappropriate antibiotic treatments contribute to higher mortality rates.
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.
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.
A study published in the Journal of the Royal Society of Medicine found that reducing antibiotic prescribing was associated with an increase in hospital admissions for respiratory infections. The research analyzed data from over 15 million hospitalizations and suggested that limiting antibiotic use may not be beneficial in all cases.
The overuse of antibiotics in fish farming can lead to increased bacterial resistance and disease risk. Consuming contaminated fish products can transfer these resistant bacteria to humans, posing a significant health threat.
Research reveals that non-pathogenic bacteria from cow manure share antibiotic-resistance genes with multi-drug resistant Salmonella strains on the same farm. Ecology appears to play a major role in the spread of drug resistance, rather than therapeutic antibiotic use.
A new treatment using fosfomycin has shown promise in treating Listeria infections, which cause severe food-borne diseases. The drug was ineffective in laboratory tests but proved effective in the body, highlighting the need to revise testing methods.
Researchers at Scripps Research Institute determined the x-ray structure of EmrD, a multidrug transporter protein in E. coli, which could help understand its mechanism and develop new drugs. The study revealed an internal cavity composed primarily of hydrophobic residues that contribute to drug specificity.
Researchers found that bacteria gain resistance through only a small fraction of the 120 possible mutational paths in a key gene. Most pathways fail to continuously improve resistance, contradicting traditional views on evolution by natural selection.
Researchers successfully synthesized a novel vancomycin analogue with enhanced binding ability, showing promise in treating vancomycin-resistant infections. The new compound could potentially lead to the development of more effective antibiotics against these resistant strains.
Researchers discovered that bacteria can export molecules similar to communication signals, blocking the effectiveness of drugs. This process, called quorum sensing, allows bacteria to evade treatment and develop resistance to multiple drugs, making infections harder to treat.
Researchers genetically engineered E. coli to lack its outer protective layer, making it more vulnerable to antibiotics. Synthetic versions of natural substrates for gram-positive bacteria's membrane formation are also being developed, potentially leading to new antibiotic designs.
Researchers screened 480 strains of soil bacteria for resistance to 21 antibiotics and found that all were multi-drug resistant. The study suggests that studying resistance in the soil can help predict future clinical problems and guide the development of new therapies.
A team of scientists discovered a massive genomic island containing a large number of antibiotic resistance genes in the A. baumannii bacterium, which has become a major public health concern globally. The island was found to contain new and previously unknown resistance genes that have enabled the bacterium to acquire resistance quickly.
The emergence of methicillin-resistant Staphylococcus aureus (MRSA) and other drug-resistant bacteria has been increasing in intensive care units nationwide. Researchers found a decrease in MRSA strains resistant to multiple drugs, which they attribute to community MRSA strains replacing hospital-associated strains.
A clinical decision system (CDSS) helped decrease inappropriate antimicrobial prescribing rates by 10% in communities with the intervention. The CDSS tool guided diagnosis and management of acute respiratory infections, reducing the use of macrolides and antibiotics for viral respiratory tract infections.
The prevalence of drug-resistant gonorrhoea is increasing in South Africa, with reports of treatment failure coinciding with the emergence of ciprofloxacin-resistant isolates. The country's health department has been urged to take action and conduct nationwide surveillance to assess the extent of the problem.
A review by Stephen Gillespie and Philippe Gay finds no evidence of antibiotic resistance from GM crops being transferred to bacteria, which would be dwarfed by the impact of human antibiotics use. The authors conclude that while it's possible for transfer to occur, its contribution to antibiotic resistance is low.
Researchers discovered four mutations that increase the efficiency of a bacterial enzyme rendering penicillin and cephalosporin antibiotics useless. The mutations influenced the enzyme's active site, allowing it to survive on a drug dose 64 times higher than the original enzyme.
Researchers found DDT-resistant fruit flies confer a two-fold advantage when inheriting the resistance gene, allowing them to thrive even without pesticide use. This discovery has implications for antibiotic resistance in bacteria, suggesting measures may not halt its spread.
Research by University of Bath scientists shows that DDT resistance confers an advantage when inherited through females, leading to its global spread. This discovery challenges the common assumption that genetic resistance always carries a fitness cost.
A new study shows that taking antibiotics within two months increases the likelihood of developing resistant bacteria. GPs are responsible for most antibiotic prescriptions in the UK, but may underestimate the individual risk.
California continues to experience cases of multi-drug resistant tuberculosis (MDR-TB), which requires prolonged treatment and poses significant public health risks. The majority of MDR-TB cases are foreign-born, highlighting the need for international TB control measures.
Researchers at Scripps Institute find a protein called LexA promotes mutations in bacteria, enabling them to evolve resistance to antibiotics. By inhibiting this protein, the bacteria's ability to evolve can be halted, potentially prolonging the potency of existing antibiotics.
Researchers propose that antibiotic-mediated DNA damage triggers a bacterial repair mechanism, increasing the likelihood of mutations leading to antibiotic resistance. Blocking this pathway could provide a promising strategy for controlling the spread of superbugs.
Two studies document a significant rise in superbugs, including methicillin-resistant Staphylococcus aureus (MRSA), affecting people worldwide. The prevalence of MRSA has more than doubled, with 76% of community-acquired isolates being resistant to antibiotics.