Researchers Find Vaginal Bacteria Imbalance Might Boost AIDS Risk
...may protect against infectionsthrough secretion of acidic chemicals, she said. When women's genital tractsbecome more alkaline, HIV apparently can survive in greater amounts. Last month, Royce and her colleagues reported in a study of 819 pregnantN.C. women that overall, 15 percent of subjects show...Salamanders may one day monitor degradation in small streams
...nto streams. AMD streams are always acidic and contain metals that are toxic to manyaquatic a...ncluding amphibians. The fourth stream type is not acidic butflows through a watershed fragmented by urbanization or agriculture. Theresearchers sampled ea...Even in the Amazon jungles, treatment for heat exhaustion is the same as it is right here at home
...void carbonated beverages, which tend to be highly acidic and contain toomuch sugar. Wear loose, light-colored clothing that will help reflect the sun and allowperspiration on your skin to evaporate. Use and take along a sunscreen. Getting a sunburn will impair your ability todissipate heat. WHILE THE H......ck of water, or water that ranges from alkaline to acidic or salty; non-carbon foods; and a lack of oxygen. One of the tricks that less durable lifeforms use to survive such tough times is to hibernate as spores. Such was the case with Streptococcus mitus discovered inside a TV camera recovered by the Apoll......ea is hydrolyzed, the groundwater will become less acidic and more basic, which will reduce the amount of calcium carbonate the water can hold. More calcium carbonate will then precipitate out as calcite. Growing calcite deposits should draw strontium and other metals out of the groundwater because stron...UT Southwestern to study effect of low-carbohydrate diet on kidney-stone formation and bone loss
...ney-stone risk in the low-carbohydrate diet is the acidic content of animal flesh and the lack of alkaline foods in the diet, Reddy said. In the first phase of the study subjects will be asked to eat a regular diet for two weeks followed by two weeks of a highly restrictive diet that has less than 20 grams...Sea slug's shopping habits dictated by hunger, scientists report
...s also were more likely to try to attack a noxious acidic stimulus, researchers found. However, satiated snails avoided the noxious stimulus, and even hungry snails with previous exposure were more likely to avoid it. "This could reflect the need of the starving sea slug to pay a higher cost for a meal, i...Chemical 'crumbs' from microbes' snacks provide a trail to ancient, remote life
...he ocean, far from any light source, and in highly acidic environments. With each of these findings, the possibility that life exists or once existed in a harsh or remote outpost of our solar system, like Mars or one of Jupiter's moons, moves up a notch. Says Anbar: "Life can exist in a much wider variety o...New genes protect trees from insects, disease
...s Podila. " By breaking down minerals locked up by acidic soils caused by the decomposition of needles, leaves, and other forest litter, fungi facilitate the passage of those nutrients from the soil to the tree. The fungus, in turn, draws food from the tree, enhancing its own survival. Another benefit of th...Pouch's newfound role tied to potential new treatment for malaria
... organelle an acidocalcisome in recognition of its acidic and calcium components. They also found that it c... that pyrophosphate analogs concentrate into these acidic calcium organelles and become toxic against the parasite but not the other host cells," Docampo said...New mechanism of drug resistance found in cancer cells
...c fibroblast growth factor and acidic fibroblast growth factor -- were present in drug-resistant tumors. Furthermore, they found that while each of these growth factors by themselves had little or no effect on drug resistance, ...Deadly for bacteria, great for consumers
... water. The electrolytic process produces very acidic water. Hung believes the water's low pH (acidity) and potential for oxidation-reduction contribute to its effectiveness. Essentially, oxidation-reduction involves the exchange of electrons. In the case of bacteria like E. coli, salmonella and listeri...... up to 63C and being able to adapt to an extremely acidic ecological niche with a range of pH 0.5-4. In comp... genes of another, distantly related inhabitant of acidic environments, Sulfolobus solfataricus. The related genes are not involved in vital processes in the ...Genetic basis of Alexander disease discovered
...ations in a gene called GFAP - or glial fibrillary acidic protein - are associated with nearly all cases of Alexander disease. Messing said the mutation triggers production of an abnormal protein, which causes a buildup of fibers that damage the nervous system. "Finding this gene would have been a shot in t...New group of microorganisms discovered in the open sea
...tal hot springs and fumeroles, and highly salty or acidic waters. Now, scientists funded by the National Science Foundation (NSF) have found unexpected, astounding numbers of archaea living in Earth's largest biome, the open sea. The researchers--David Karl and Markus Karner of the University of H...Glennda Chui and Richard Stone win AGU journalism awards
...tory, published March 28, 2000, describes the most acidic water ever found in nature, registering pH -3.6, o...both the chemical processes that make the water so acidic and the societal impact of acidic runoff from the mountain. Stone, who is European News Editor for S...Reducing primary chemical emissions does not always reduce pollution
...the past decades, there are still episodes of very acidic rain in the Northeastern United States. Stein and Dr. Dennis Lamb, professor of meteorology, looked at the variety of pollutants that figure into the formation of sulfate particles. These emissions include sulfur dioxide, nitrogen oxides and volat...Tips from the Journals of the American Society for Microbiology: July 2001
...though, the bacteria must first survive the highly acidic environment of the stomach, and it is the use of antacids that may help these bacteria get past the stomach and to the intestines where they can cause disease. "Presence of antacid in the gastric compartment of the model greatly increased the abilit...Chemicals in frying pan a potential hazard to environment
...nwater. However, the rainwater can contain TFA, an acidic byproduct that takes many decades to degrade. "By measuring TFA levels in rainwater over the last three to four years, researchers estimated there should be 100 to 120 parts per trillion in the water by the year 2020," says David Ellis, lead author o...The skin's acid coating: SFVAMC researchers explain its origin and how it maintains skin integrity
...own that the outer layers of the skin are about as acidic as a bowl of crushed tomatoes. This acidity was believed to help ward off infections by preventing the growth of bacteria. But the source of all this acid and how it helped to maintain the skin's strength and integrity, remained a mystery. In their...