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Study debunks common misconception that urine is sterile

Researchers from Loyola University Chicago Stritch School of Medicine found bacteria in the bladders of healthy women, contradicting the long-held belief that normal urine is sterile. This discovery has significant implications for understanding bladder health and disease, particularly lower urinary tract disorders.

SourceLoyola Medicine·JournalEuropean Urology·DateMar 30, 2015

How the human immune system keeps TB at bay

Researchers developed a tissue culture model to study latent tuberculosis infection, finding that the human immune system generates an early response that protects against active disease. However, some bacteria can adapt and survive in these high-pressure environments, increasing the risk of reactivation.

SourceOhio State University·JournalmBio·DateMar 26, 2015

NIH-funded researchers find off-patent antibiotics effectively combat MRSA skin infections

Researchers have found that clindamycin and TMP-SMX are equally effective in treating uncomplicated skin infections caused by community-associated MRSA. The study's findings suggest that these off-patent antibiotics can be used successfully to combat MRSA skin infections acquired outside of hospitals.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalNew England Journal of Medicine·DateMar 19, 2015

Joint fluid harbors bacterial clumps after replacement despite pre-surgery antibiotics

Despite pre-surgery antibiotics, bacterial clumps persist in joint fluid, forming protective mesh of proteins that slow growth and make them resistant to treatment. The study identified a key reason for the difficulty in curing joint infections: biofilm-like clumps of bacteria that harbor antibiotic-resistant superbugs.

SourceThomas Jefferson University·JournalAntimicrobial Agents and Chemotherapy·DateMar 17, 2015

A high-salt diet could protect against invading microbes

A study published in Cell Metabolism reveals that a high-salt diet can increase sodium accumulation in the skin, boosting the immune response to skin-infecting parasites. This finding suggests that dietary salt may have therapeutic potential in promoting host defense against microbial infections.

SourceCell Press·JournalCell Metabolism·DateMar 3, 2015

Multicenter study finds respiratory viruses most common cause of pneumonia in children

A multicenter study found that respiratory viruses, particularly RSV and human rhinovirus, are the leading causes of pneumonia in children. The study, which included over 2,300 hospitalizations, revealed that viral infections accounted for 81% of cases, while bacterial infections were responsible for only 8%. The findings suggest that ...

SourceVanderbilt University Medical Center·JournalNew England Journal of Medicine·DateFeb 25, 2015

Bacterial memories

The study found that Listeria monocytogenes adapts its metabolism specifically to the host genotype, correlating with the severity of symptoms in infected mice. Bacteria retain a 'memory effect' that reverts to a common metabolic fingerprint after laboratory cultivation.

Diabetes drug spurs host defense

Researchers found that pioglitazone enhances ROS production in white blood cells, killing difficult-to-treat pathogens. This finding demonstrates a relevant contribution to host defense in mouse and cellular models of chronic granulomatous disease.

SourceNational Jewish Health·JournalJournal of Allergy and Clinical Immunology·DateFeb 11, 2015

Novel non-stick material joins portfolio of slippery surface technologies

A novel liquid-infused polymer technology has been developed to prevent bacterial biofilm formation on medical surfaces, reducing the risk of infections. The technology uses a combination of silicone oil and polymer to create a slippery surface that repels bacteria, making it suitable for use in medical devices.

SourceWyss Institute for Biologically Inspired Engineering at Harvard·JournalACS Biomaterials Science & Engineering·DateFeb 10, 2015

Identification of much-needed drug target against MRSA, gram-positive infections

Scientists at the University of Utah and Georgia have discovered a pharmacological target that could enable development of novel drugs against antibiotic-resistant pathogens, including MRSA. The target is based on a unique pathway for making heme, an essential iron-carrying molecule specific to Gram-positive bacteria.

SourceUniversity of Utah Health·JournalProceedings of the National Academy of Sciences·DateFeb 2, 2015

Findings do not support chlorhexidine bathing in ICUs

A study of critically ill patients found that chlorhexidine bathing did not decrease the incidence of health care-associated infections. The study involved over 9,300 patients and found no significant difference between groups in infection rates, suggesting that such bathing may not be necessary.

SourceJAMA Network·JournalJAMA·DateJan 20, 2015

Predicting superbugs' countermoves to new drugs

Duke University researchers develop software to predict genetic changes in bacteria that will allow it to evade new experimental drugs. The team successfully identified four mutations that would confer resistance, with over half of surviving colonies carrying the predicted mutation.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateJan 2, 2015