E. coli

The immune system may open the door to recurrent urinary tract infections (UTIs) by overdoing its response to an initial infection, researchers at Washington University School of Medicine in St. Louis have found.

The schematic in the center shows how a drug molecule (in the circle) prevents UTIs by stopping pili formation.A different approach to treating urinary tract infections (UTIs) could defeat the bacteria that cause the infections without directly killing them, a strategy that could help slow the growth of antibiotic-resistant infections. Instead of trying to wipe out bacteria, researchers at the School of Medicine have been working to create pharmaceuticals that essentially “defang” the bacteria by preventing them from assembling pili, microscopic hairs that enable the bacteria to invade host cells and defend themselves against the host’s immune system.

The schematic in the center shows how a drug molecule (in the circle) prevents UTIs by stopping pili formation.A different approach to treating urinary tract infections (UTIs) could defeat the bacteria that cause the infections without directly killing them, a strategy that could help slow the growth of antibiotic-resistant infections. Instead of trying to wipe out bacteria, researchers at Washington University School of Medicine in St. Louis have been working to create pharmaceuticals that essentially “defang” the bacteria by preventing them from assembling pili, microscopic hairs that enable the bacteria to invade host cells and defend themselves against the host’s immune system.

While the U.S. Food and Drug Administration has lifted the ban on fresh spinach and the produce is back on many grocery store shelves and restaurant plates, some consumers may not be so eager to return to eating the leafy greens that left at least three people dead and 199 others sickened across 26 states after an E coli O157:H7 outbreak. A dietitian at Washington University in St. Louis offers advice on finding new sources of the nutrients offered by spinach for those who are avoiding the leaf vegetable because they are still concerned about its safety. More…

Red blood cells damaged by inflammation caused by food poisoning.A protein that helps keep immune system cells from mistakenly swallowing and destroying healthy cells has been linked to an inherited disorder with symptoms similar to severe food poisoning, according to researchers at the Washington University School of Medicine and the University of Newcastle in the United Kingdom. John Atkinson, M.D., the Samuel Grant Professor of Medicine at Washington University School of Medicine in St. Louis, says the results make it possible to genetically screen patients for one form of atypical hemolytic uremic syndrome (HUS), a rare but potentially life-threatening condition linked to excessive cell damage, blood clots and kidney failure. Normal HUS, often in the headlines because of food-related outbreaks, is caused by consumption of a toxic form of the bacteria E. coli.