Articles tagged with Antibiotics
Researchers developed a mathematical model to predict how specific mutations affect antibiotic resistance. They discovered that small changes can increase resistance by up to 500%, challenging the idea of big effects from big changes.
A study published in JAMA Network reveals a high clinical treatment failure rate of nearly 7% for patients treated with cefixime for gonorrhea infections in Toronto. The researchers found that strains with reduced susceptibilities to cefixime were associated with higher rates of clinical failures.
Researchers discovered that bacteria can survive antibiotic exposure through random pulses of the enzyme KatG, which activates the drug isoniazid. This finding may aid in designing new antibacterial treatments, particularly for drug-resistant tuberculosis.
Researchers at EPFL have developed a new tool using optofluidics to observe individual bacteria, revealing that persistent populations are dynamic and can adapt through mutation. This challenges traditional theories of bacterial resistance, offering new insights into the evolution of antibiotic efficacy.
A large European trial confirms that commonly prescribed antibiotics are ineffective for treating acute uncomplicated respiratory infections. Patients given amoxicillin did not recover much quicker or have significantly fewer symptoms, and the treatment appeared to have a limited effect even in older patients.
A new study published in BMJ Open found that high-dose vitamin D supplementation reduced symptoms of respiratory tract infection by almost a quarter and antibiotic use by nearly half in patients with frequent infections. However, the treatment had no significant impact on otherwise healthy individuals.
Scientists have discovered a wealth of new antibiotic substances in the skin of the Russian Brown frog, expanding on previous findings to identify 76 additional compounds with potential medical activity.
Researchers have discovered a soil bacterium that degrades the common veterinary antibiotic sulfamethazine and uses it for growth. This finding challenges existing theories on antibiotic resistance and suggests that soil bacteria may be capable of breaking down antibiotics more rapidly, potentially reducing their impacts.
A study of over 33,000 outpatient male veterans found that a longer duration of antimicrobial treatment did not reduce the risk of early or late recurrence of urinary tract infections (UTIs). The optimal treatment duration for UTI in men is currently unknown.
Researchers developed a low-cost, high-throughput platform for identifying compounds with novel antibiotic properties using a diagnostic panel of bacterial strains. The new strategy promises to streamline the discovery of new antibiotics from natural sources, providing a solution to the looming antibiotic crisis.
Scientists have engineered Escherichia coli bacteria that can deliberately die to protect their population, promoting the survival of survivors. The altruistic behavior emerges after sufficient time has passed and can be controlled by tuning the extent of programmed cell death.
Robert E.W. Hancock, a UBC microbiologist, has received the Prix Galien 2012 Research Award for his groundbreaking research on complex interactions between antibiotics and bacteria. His work focuses on developing new therapeutic approaches to infectious diseases like malaria.
Researchers found that e-visit patients were more likely to receive antibiotics and less likely to have relevant testing ordered by their physicians before receiving medication. Despite this, the study suggests that e-visits can improve access to care and convenience for patients without compromising quality.
Researchers found that antibiotic-resistant E. coli can survive in soil and recolonize in animal guts through pasture, forage or bedding. They propose potential solutions to limit the spread of resistance by isolating residual antibiotics before they interact with soil bacteria.
Researchers found that antibiotic resistance for urinary tract infections increased by over 30% between 1999 and 2010, making treatment more challenging. The Southeast region had the highest burden of antibiotic resistance, while states in New England and Pacific regions showed lower levels of resistance.
Researchers have discovered how a particular type of carbapenemase enzyme reorients bound antibiotics to destroy their antimicrobial activity. This understanding could lead to the design of new drugs that can resist being broken down by such enzymes, helping combat increasing antibiotic resistance.
Researchers found eight different tetracycline resistance genes among US honeybees, but only two or three in honeybees from countries with banned antibiotic use. This suggests that the use of antibiotics may have weakened honeybee wellbeing and reduced their ability to fight off other diseases.
Researchers discovered that powerful antibiotics can only partly block protein synthesis in bacteria, allowing the cells to continue producing proteins that may ultimately lead to their own demise. This finding has significant implications for antibiotic development and could lead to the creation of more effective treatments.
New research suggests antibiotics do not effectively treat coughs caused by the common cold in children. Peripheral antitussives, such as levodropropizine, appear to be more effective in relieving cough symptoms. The American College of Chest Physicians recommends these treatments for certain types of cough.
Researchers at North Carolina State University have developed a compound that can reactivate antibiotics against methicillin-resistant Staphylococcus aureus (MRSA), making it effective again. The new compound works by short-circuiting the bacteria's ability to mount a defense against the antibiotic.
A recent study from Henry Ford Hospital found that effective treatment for MRSA-related pneumonia can be achieved within 8-13 days, significantly reducing antibiotic exposure and side effects. Researchers evaluated 115 patients' medical charts and discovered that this shorter treatment duration resulted in the highest survival rate.
Researchers at Henry Ford Health found a novel therapy that uses donated human stool to treat C.diff infection safe and highly effective, with 43 of 49 patients recovering swiftly. The treatment involves administering the stool mixture through a nasogastric tube or colonscopy.
Researchers at Simon Fraser University have discovered a Trojan horse-like mechanism that enables antibiotics to deliver directly into a bacterial cell. The method uses pilus filaments to transport antibiotics into bacteria, offering a new approach to treat deadly bacterial infections like cholera and Pseudomonas aeruginosa.
Two new tests, Corba NP test and ESBL NDP test, can rapidly detect resistant bacteria in under 2 hours, revolutionizing antibiotic treatment. These tests have excellent sensitivity and reliability, offering a simple and inexpensive solution to combat antibiotic resistance.
Urinary tract infections are a common cause for antibiotic prescriptions, but overusing powerful quinolone antibiotics can lead to bacterial resistance. Experts recommend using targeted older drugs instead, unless necessary, to conserve the effectiveness of all medications.
Researchers have made progress in tackling C. difficile infections using mouse models and human patients, with potential treatments including an oral medication and genetic mutation detection. The studies found that administering an oral supplement can prevent CDI, while detecting a specific gene mutation may predict recurrent infections.
Scientists at Queen's University Belfast have developed a new technique using a cold plasma jet to kill bacteria in biofilms, making it effective against complex organised communities of bacteria. The approach has the potential to control hospital superbugs, including multidrug-resistant bacteria like MRSA.
Researchers have developed a new class of antibiotics that disarm pathogens instead of killing them, effectively treating antibiotic-resistant infections. By blocking the synthesis of endotoxin, a toxic product shed by bacteria, these antibiotics prevent inflammation and protect against potentially lethal infections.
A study of Medicare data found wide variation in antibiotic prescribing for older adults based on region and season, with the South having the highest use and West the lowest. The study highlights the need for targeted quality improvement initiatives to reduce unnecessary antibiotic use.
A hands-on project for high school students in Portugal increased understanding of bacteria, antibiotics, and the dangers of antibiotic resistance. Students found the experience both enjoyable and useful, highlighting the benefits of incorporating hands-on activities into science education.
New guidelines from Infectious Diseases Society of America recommend penicillin or amoxicillin for confirmed strep throat infections. The guidelines also advise against tonsillectomy for children with recurrent strep throat unless in specific cases.
A multicenter trial found that antibiotic treatment with amoxicillin/clavulanate significantly improved clinical cure rates and prolonged the median time to next exacerbation in patients with mild-to-moderate COPD. Patients with elevated capillary C-reactive protein (CRP) levels were more likely to be cured without antibiotics.
Bacteria exhibit social behaviors similar to plants and animals, including cooperation and competition. The study found that certain individuals produce antibiotics to defend against competitors, while others benefit from association with these producers.
Researchers found that a few marine microbes produce natural antibiotics that protect their populations from competitors and neighboring populations. This cooperative behavior, where some individuals act as protectors of the many, is a surprising example of social organization in microbial populations.
Researchers found that high doses of vitamin D, given with antibiotic treatment, accelerate recovery in TB patients by dampening down the body's inflammatory response. Vitamin D supplementation may also benefit patients recovering from pneumonia.
A statistical review of four studies on Lyme disease retreatment suggests flaws in design, analysis, and interpretation that challenge the evidence against treatment. The review found inconclusive results and potential benefits from antibiotics, leading experts to question the guidelines' recommendation against retreatment.
Researchers found that antibiotic concentrations set by regulators are high enough to slow fermentation, allowing pathogens like Salmonella and E. coli to proliferate. Boosting lactic-acid-producing bacteria survival can help mitigate the issue.
A new study suggests that nicotinamide, a form of vitamin B3, can increase the ability of immune cells to kill staph bacteria by 1,000 times. This could offer a new tool in the fight against 'superbugs' and potentially reduce dependence on antibiotics.
Researchers at Université de Montréal have discovered a novel strategy to combat antibiotic-resistant superbugs by targeting virulence factors. By removing these proteins, the body's immune system can eliminate the bacteria, making them harmless.
Researchers develop smart catheter that senses infection and releases nitric oxide to stop bacterial growth, reducing healthcare-associated infections. The device has shown promising results in lab experiments, with the ability to extend NO release for up to weeks.
Researchers found that early exposure to antibiotics can alter the gut microbiome, leading to increased fat mass and percent body fat in mice. The study suggests a potential link between antibiotic use in childhood and later development of obesity. Further research is needed to confirm this theory.
A groundbreaking clinical trial is underway to test the safety and efficacy of fecal transplantation as a treatment for relapsing C. difficile infection. The study aims to demonstrate that fecal transplant is a viable, safe, and curative option for patients suffering from recurring C. difficle.
A study of over 10,000 children found a correlation between early antibiotic exposure and increased body mass percentile in childhood. Children exposed to antibiotics from birth to 5 months old were more likely to be overweight by 38 months of age.
Cefazolin outperforms vancomycin in preventing hospitalizations and deaths from specific bloodstream infections, a study reveals. The antibiotic was found to be 48% more effective at preventing sepsis.
Researchers have identified a promising new treatment for non-cystic fibrosis bronchiectasis, which reduces the frequency of exacerbations and increases time to first exacerbation. The treatment, azithromycin, has shown benefits persisting for six months after completion, offering a new option for patients with this debilitating disease.
Scientists develop substances targeting bacteria virulence factors to prevent UTI development and emergence of resistant microbes. A low dose reduced bacteria in the bladder by almost 10,000 times.
Researchers demonstrate that bacteria can form antibiotic-resistant clumps in a short time, even in a flowing liquid such as the blood, leading to severe infections. These clumps persist even when two different types of antibiotics are added, suggesting that sticking together protects the floating bacteria from the drugs' effects.
Resistant tuberculosis is a serious threat to world health, with 'multiresistant' cases now making up 1 in 3 new TB cases. A new approach using vital staining with fluorescein diacetate detects resistant bacilli early, allowing for timely treatment and preventing further spread.
Physicians can improve antibiotic prescribing habits by paying attention to contextual clues, reducing flu season prescribing rates. The authors recommend equal evaluation of HbA1c levels for diabetes diagnosis in all racial groups, as black patients have higher levels at the same blood glucose levels.
Researchers at WashU Medicine found that administering antibiotics before cesarean section surgery cuts infection rates in half. The study, published in Obstetrics & Gynecology, followed over 8,000 women and found significant reductions in surgical site infections after policy change.
A training tool called DECISION+2 helps physicians involve patients in decision-making, reducing the need for antibiotics for acute respiratory infections. The study found that patients who used DECISION+2 were significantly less likely to report using antibiotics immediately after consultation.
A multidisciplinary team from VCU suggests a three-times-a-week dose of azithromycin may benefit patients with COPD by eliminating one-third of severe exacerbations each year. However, the approach carries potential risks such as hearing loss and antibiotic resistance.
Researchers have developed a new fluorescent labeling strategy that enables the examination of bacterial biofilm structure, leading to potential drug targets. The study has provided new insights into the development of complex structures and may pave the way for new approaches to fighting infectious disease.
Researchers developed a silk-based stabilizer that maintains potency of live vaccines and antibiotics even at high storage temperatures. This innovation has the potential to eliminate the need for refrigeration, saving billions in costs and increasing accessibility to third-world populations.
A new study reveals that seasonal changes in outpatient antibiotic use can significantly alter drug resistance patterns. The findings suggest that reducing inappropriate antibiotic use requires coordinated efforts between hospitals and the broader community to be most effective.
Researchers found that antibiotic treatment reduced the number of live spirochetes in infected mice but left behind fluorescent bacterial debris. This debris triggered an inflammatory immune response and may contribute to arthritis-like symptoms in some patients.
Scientists identify WNT signaling pathway as potential therapeutic target for obesity. Antibiotic treatment after Lyme disease shows fluorescent bacterial debris remains without causing infection. Oxidative stress contributes to parasite persistence in host tissues, opening new avenue for anti-Trypanosoma cruzi drugs.
Researchers have developed a new class of antimicrobials that target bacteria virulence factors, reducing the risk of antibiotic resistance. The most potent substance prevented UTIs from developing in mice for over eight hours and reduced bacterial growth by nearly 10,000 times.
A study found that patients with chronic rhinosinusitis have a depleted nasal microbiome and an overgrowth of Corynebacterium spp., which can induce pathophysiology consistent with sinusitis. Probiotics, such as Lactobacillus sakei, may inhibit the growth of harmful bacteria and prevent infection.
Research found no increase in infective endocarditis among dental patients following updated guidelines, which restrict antibiotic use to those at greatest risk of complications. The study's results are reassuring but suggest further research is needed to support the findings.