From mild-mannered to killer plague: New study explains plague's rapid evolution
In the evolutionary blink of an eye, a bacterium that causes mild stomach irritation evolved into a deadly assassin responsible for the most devastating pandemics in human history. How did the mild-mannered Yersinia pseudotuberculosis become ...
500 years ago, yeast's epic journey gave rise to lager beer
(PhysOrg.com) -- In the 15th century, when Europeans first began moving people and goods across the Atlantic, a microscopic stowaway somehow made its way to the caves and monasteries of Bavaria.
Stomach acid-powered micromotors get their first test in a living animal
Researchers at the University of California, San Diego have shown that a micromotor fueled by stomach acid can take a bubble-powered ride inside a mouse. These tiny motors, each about one-fifth the width ...
Chip-in-a-pill may be approved in 2012
Scientists solve a sticky problem
(Medical Xpress)—Scientists have uncovered how an ulcer causing stomach bacteria, that has been linked to gastric cancer, sticks to and infects the lining of the stomach and gut.
The floppy protein: When being out of shape finally pays off
(Phys.org) —A protein that acts as a chaperone and escorts pathogenic bacteria through the acid bath of the human stomach actually needs to lose its shape in order to work.
Scientists uncover secrets of starfish's bizarre feeding mechanism
Scientists have identified a molecule that enables starfish to carry out one of the most remarkable forms of feeding in the natural world.
Clogged pores for increased effectiveness: Whey protein stabilizes nanotransporter, controls pH-dependent drug release
(Phys.org)—How can pharmaceuticals be safely carried through the acidic environment of the stomach and into the intestines? A team of Canadian and Australian researchers has developed a novel nanotransporter ...
The NutriSmart system would put RFIDs into your food for enhanced information
Researchers find animals that evolve to have no stomach have same missing genes
Atomic-resolution view of a receptor reveals how stomach bacterium avoids acid
University of Oregon scientists have discovered how the bacterium Helicobacter pylori navigates through the acidic stomach, opening up new possibilities to inactivate its disease-causing ability without using ...
X-rays pinpoint drug target for Helicobacter pylori
(Phys.org)—Experiments at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have revealed a potential new way to attack common stomach bacteria that cause ulcers and significantly ...
Closing in on an ulcer- and cancer-causing bacterium
A research team led by scientists at the Chinese University of Hong Kong is releasing study results this week showing how a bacterium, Helicobacter pylori, that causes more than half of peptic ulcers worldw ...
Location, location, location: Membrane 'residence' gives proteases novel abilities
Johns Hopkins scientists have discovered a new mode of action for enzymes immersed in cellular membranes. Their experiments suggest that instead of recognizing and clipping proteins based on sequences of ...