Discovered in 1982, Helicobacter pylori (H. pylori) is a disease-causing bacterium that survives in our stomachs despite the harsh acidic conditions. It is estimated that one in two people have got it, though most won't ever ...
Cell & Microbiology
Aug 14, 2015
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993
Nanoengineers at the University of California San Diego have demonstrated for the first time using micromotors to treat a bacterial infection in the stomach. These tiny vehicles, each about half the width of a human hair, ...
Bio & Medicine
Aug 16, 2017
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626
Tiny "submarines" that speed independently through the stomach, use gastric acid for fuel (while rapidly neutralizing it), and release their cargo precisely at the desired pH: Though it may sound like science fiction, this ...
Biochemistry
Jan 23, 2017
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685
An analysis of data on stomach acidity and diet in birds and mammals suggests that high levels of stomach acidity developed not to help animals break down food, but to defend animals against food poisoning. The work raises ...
Evolution
Jul 29, 2015
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23
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 of a human hair, ...
Bio & Medicine
Jan 27, 2015
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81
(Phys.org) —A small team of international researchers has found that every type of jawed vertebrate they tested that has over time lost its stomach to evolution, such as chimaeras, numerous teleosts, lungfish and the platypus, ...
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 worldwide and that has ...
Biochemistry
Dec 7, 2011
1
0
(Phys.org) —Conditions such as celiac disease, phenylketonuria, lactose intolerance and exocrine pancreatic disease involve abnormal enzyme activity. Enzymes administered orally could help sufferers. However, because enzymes, ...
(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 increase the odds ...
Biochemistry
Dec 10, 2012
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0
(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.
Cell & Microbiology
Mar 5, 2013
0
0
Gastric acid is secretion produced in the stomach. It is one of the main ditotonic solutions secreted, together with several enzymes and intrinsic factors. Chemically it is an acid solution with a pH of 1 to 2 in the stomach lumen, consisting mainly of hydrochloric acid (HCl) (around 0.5%, or 5000 parts per million), and large quantities of potassium chloride (KCl) and sodium chloride (NaCl).
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