Scientists Find New Trigger For Nerve Cell Death
... But Yu's experiments suggest that amass exodus of potassium may be just as important as changes in calcium. ...use drugs called potassiumchannel blockers to stem potassium loss and prevent nerve cells from dying. Thismight restrict damage to the initially injured area of ...Researcher Discovers Plant Genes For Phosphate Uptake
...he big three nutrients -- nitrogen, phosphorus and potassium -- phosphorus is the hardest for plants to get out of soil. The degree of phosphorus availability varies from place to place, but many soils jealously guard their phosphorus supplies. The very acid soils of the tropics contain many molecules of iron ......this newtechnique. Potential uses include removing potassium chloride from pulp and paper processingstreams to protect equipment and reduce costs, treating water to guard against contamination incomputer chip manufacturing operations, removing magnesium in sugar-refinery processingplants to y ield more high-gr...Molecular Memory Tunes Adrenaline To Stress
...il of the donut-shaped channel proteins that allow potassium electrical signals to cross the cell membrane. An... that steroid stress hormones dictate whether the potassium channels controlling adrenaline release are constructed with or without an optional piece called STR...Researchers Discover Novel Gene Family Responsible For Pacemaker Activity In Brain And Heart
...li andallow the positively charged ions sodium and potassium to cross the cellmembrane and initiate an electrical impulse. Specifically, these pacemakerchannels keep a stimulated cell active when it would otherwise return to aresting state. "A pacemaker channel senses that a cell has just fired and te...Tiny Molecular Channels Key To Protecting Heart During Attack
...potassiumflow into the cells. The drug opened the potassium channels in the mitochondriabut had no effect on other channels. The team also found that when oxygensupply to the heart cells was stopped, as happens during a heart attack,diazoxide halved the rate of cell death. Results of the study, suppo...Groundwater Injection Process Filters Out Contaminants
...um dithionite -- diluted in waterand buffered with potassium carbonate and potassium bicarbonate -- into a wellfor about 10 hours. Once it reached the groundwater, the sodium dithionit...Rock-Eating Microbes Could Signify Life On Mars
...they are seekingmicronutrients in the rock - iron, potassium or sulfur - which they need insmall amounts. "They may also be dissolving the rock to get a certain chemical reactionto provide them energy." The researchers believe the microbes were originally carried beneath theocean floor in seawa......he axon. "The mechanism of that might berelated to potassium ion movement through the gap junctions, but this is just ahypothesis right now," states Scherer. "Certainly in the narrowest sense this research ought to lead to sometreatments for CMTX," adds Scherer. "We ought to be able to someday designth...Brief Exposure To High Temperature Has Lasting Effect On Nervous System
...lcium from the neurons, but instead, we found that potassium outflow fromthe neurons of heat-shocked locusts wa...sdefinitely adaptive significance to the change in potassium levels, althoughmore investigation is required to determine exactly how the changes influencethe loc...Quarterly News Tipsheet -- Research Highlights From Pacific Northwest National Laboratory
... in the pulp and paper industry is the presence of potassium andchloride ions in the process stream. A technol... radioactive waste is being adapted toseparate the potassium and recover valuable sodium. Electrically Switched Ion Exchange, or ESIX, uses membranes coated with...Mixing Radiation, Minerals, Toxic Waste Could Be Cleanup Boon -- Or Kaboom
...The same reaction does not occur inthe presence of potassium bromide, a simple salt-like compound not found insoil. HCB, which is a common pollutant in its own right, also serves as a modelcompound for its less prevalent but more toxic chemical cousins, the PCBs anddioxins. When mixed, HCB and similar chemical...Striking A Healthy Balance For The Elderly
...se and can help maintain thebalance of calcium and potassium in the body. Copper is believed to reduce therisk of cardiovascular disease, osteoporosis and anemia. Together, the fourmicronutrients are instrumental in reducing the risk of morbidity in lateryears. The U.S government recommends adults consume 10...Cardiac surgery patients at higher risk
...ical institutions in the United Statesexamined the potassium levels of more than 2,400 patients undergoing card...ng andafter surgery doubled when a patient's serum potassium level fell below 3.5millimoles per liter (mmol/L). At levels below 3.3 mmol/L, the need forcardiopul...Mathematics reveals inner workings of potassium pipeline
...--Many of the body's cells need a reliable flow of potassium toperform their daily tasks. One key to potassium flow, now revealed toresearchers, appears to be the energetic effect of a pool of approximately 50wa...Cinnamon is lethal weapon against E. coli O157:H7
...combinedwith either 0.1 percent sodium benzoate or potassium sorbate, preservativesapproved by the Food and Drug Administration, the E. coli were knocked out to anundetectable level. The number of bacteria added to the test samples was 100times the number typically found in contaminated food. "This ...Even in the Amazon jungles, treatment for heat exhaustion is the same as it is right here at home
...ration. Sweat contains minerals, including sodium, potassium and magnesium, that yourbody needs. But Dr. Hardy says many people make the mistake of replacing sweatwith water or juice that do not replenish these necessary nutrients. Shesuggests drinking a sport drink that contains about 100 milligrams of sodium...Gene mutation tied to deafness found in African-Americans and Caucasians
...endupon the flow of potassium. Gap junctions allow potassium to flow from haircells to neighboring cells. As hair cells are the first to respond to soundvibrations, a connexin mutation that interferes with efficient potassiumtransport could result in a hearing loss. UNC is a leader in the treatment o...Explaining how ozone "chokes up" plants
... form, into and out of the cells. "We monitored potassium because it is a major component in the osmotic process," she says. "If the potassium ion concentration is increased, water comes into the cell by osmosis and the guard cells surrounding......get any node at all," Popko explained.In addition, potassium channels were scrambled out of position and the lateral myelin loops that normally adhere tightly to the axon appeared unwound. Moreover, a protein thought to play an important role in myelin adhesion was not concentrated in its usual location. "In ...