Study examines role of helicobacter pylori in esophageal cancer development
...ection may induce gastric atrophy, leading to less acidic stomach fluids that are less harmful to esophageal tissue. In contrast, researchers have speculated that H. pylori infection may increase the risk of squamous-cell carcinoma (cancer that arises in the cells that line the esophagus) by stimulating the...Ontario researchers see increase in taste and odour-causing algae problems
...terns, which we think involves some combination of acidic deposition and climate change," explains Dr. Smol. "The timing indicates that these patterns are the result of one or more human-caused stresses operating at a broad, regional scale," says lead investigator Andrew Paterson, a former doctoral student...JCI table of contents, 15 March 2004
...liferation, inflammation, or cell death. Recently, acidic sphingomyelinase (ASMase) has been shown to play a significant role in hepatocellular apoptosis and liver damage induced by TNF-alpha. In the March 15 issue of the Journal of Clinical Investigation, Jos Fernndez-Checa and colleagues, at the Institut ...Yale researchers discover new potential asthma therapeutic targets related to parasites and insects
An unusual protein called acidic mammalian chitinase (AMCase), is markedly increased in mouse models of asthma, making it an important link in finding the pathways that lead to asthma, Yale researchers report in today's issue of Science. Asthma is a disease produced by chronic infla...Finding the hole in the defenses of cavity-creating microbes
...in the mouth," says Quivey, "but they adapt to the acidic environment and thrive, thanks to the special defe...quickly plummets, becoming 100 to 1,000 times more acidic than normal. Without frequent brushing and flossing, the assault on our teeth results in cavities qu...Protein controls acid in cells by direct detection of volume changes, study finds
...l's acidity. The fewer protons in a cell, the less acidic it is. "The acidity in the cell is a huge signal for the cell," said Dr. Donald Hilgemann, professor of physiology at UT Southwestern and senior author of the study. "The control of acidity regulates cell growth and proliferation." Hormones and man...Research shows oceans are becoming more acidic
... in a high CO 2 world: the ocean would be more acidic globally, and would also be more stratifed in the high latitudes. In addition nutrient concentrations in surface waters of high-latitude regions would be lower, subsurface waters would be less oxygenated, and phytoplankton would experience increased ...Travelers' diarrhea not improved by restricted diet
... is very high in sugar (syrup or honey), is highly acidic (citrus), is able to be peeled (fruit), or is freshly cooked. "Tell the waiter that you're going to require everything served steaming hot," said Dr. DuPont....New way to protect brain from stroke damage
... in nerve cells starved of oxygen and subjected to acidic conditions. That calcium overload, long attributed...ected. The new work identifies a mechanism whereby acidic brain conditions following ischemia spur a portion of the damage. The normal brain requires complete...New hydrothermal vents discovered as 'South Pacific Odyssey' research begins
...nimals that live in total darkness off of the hot, acidic vent water. Many scientists have dubbed the basin "the perfect geologic experiment," an ideal place to study the processes that connect Earth's deep interior to ocean ridge volcanoes and the biological communities they support in the complete absenc...