Dangerous Chemical Combination Presents Possible Scenario For Gulf War Illnesses
... and permethrin. "Pyridostigmine bromide actually pumps more of the other chemicalsto the brain," said Abou-Donia. "While PB itself cannot crossthe blood-brain barrier, it magnifies the effects of the other two chemicalsby tying up the available BuChE." Abou-Donia said an additional genetic risk factor a......mp so instead of pumping dopamineinto the cell, it pumps dopamine out of the cell, Caron said. In the knockout mice with no dopamine transporters, amphetamines can stillget into the neuron through the cell membrane and disrupt dopamine vesicles.However, without transporters, dopamine cannot get out of the...Researchers Find Possible New Route to Making Cancer Cells Vulnerable
...cts like a pore in the cell surface.It selectively pumps out toxic chemicals that find their way inside thecell. Normally, the MDR pump protects the cell against poisons, but resistantcancer cells have many times the normal amount of MDR protein to protectthem from chemotherapy drugs. These cells work over...A Drug Pump On A Computer Chip
... "No company wants to build hospital infusion pumps any longer, since the whole health care system is ...ing used each year, in addition to other downsized pumps and sensors. But there are still no closed-loop systems on the market that can regulate themselves w...At Life's Most Sensitive Stage, Embryos Cope With Stress
...py drugs. Recently, Epel and others have found MDR pumps in many organisms, from bacteriato mammals. This defense against toxins almost certainly has been around formillions of years. Unfortunately it's now one of the mechanisms that cancers useto resist treatment, and that disease-causing organisms use to...ASU Scientists Make Major Breakthrough With Photosynthetic Energy
...s. The scientists devised a chemical system that pumps protons across a membrane from the outside of a cell to the inside. The pumping action creates an imbalance in proton concentration across the membrane, causing the protons to flow through a protein and generate biological energy. Gust said, "The f...Purdue Herbarium -- A Noah's Ark For Egyptian Plants
...2001, Egyptians will complete a 40-mile canal that pumps water from Lake Nasser in the south to more than 415,000 acres of desert in the central section of the country. "There are two ways to look at it," says Anthony Swinehart, curator of the Purdue Department of Botany and Plant Pathology's Arthur and Kr......nerve cells, and muscle contraction. All these ion pumps work in the same way as the proton ATPase and are likely to have similar structures. Manfred Auer and Werner Khlbrandt of the Department of Structural Biology at the Max Planck Insitute of Biophysics develope...Breakthrough: Scientists Create 3-D Map Of Cell Membrane Ion Pump At Near Atomic Resolution
...in Frankfurt, Germany. "Membranes and the pumps within them are important because they helpkeep th...,will help researchers better understand how these pumps act to control the flowof ions, or charged particles, of such critical elements as sodium, potassium...The Distinctive Sound Of Cholesterol
...g to the sounds made by the blood. When the heart pumps blood, velocity is high (systolic cycle) and the flow is turbulent even with no stenosis. If the artery is clean, there is no turbulence when the heart does not pump (diastolic cycle), and when the velocity of blood is low. But when cholesterol depos...Veterinarians' Input On Olympics Horse Events Has Had Global Impact
...y of the three-day"triathlon" events. Using steam pumps to create varying levels of heat and humidity, OhioState researchers found that at 90 degrees and 85 percent humidity (a commonJuly morning in Atlanta) a horse would become fatigued in half the timeas in the 45 degrees common to the event's origin in......hers to develop inexpensivesensors and lightweight pumps to simplify operation of Numotech's uniqueoxygen-bath system for healing wounds, pressure sores, and pressure ulcers--quickly and with reduced scarring. The product--helpful to the elderly, paraplegics, diabetics, and victims ofburns and sev...Oil Spill Cleanup Product Made From Sugar Byproduct
...gasse, along with ammonia and air, in areactor and pumps up the pressure to 1,000 pounds per square inch. The highpressure drives the ammonia into the fibers and produces nitrogen compounds themicrobes use to convert the hydrocarbons into humic material. "The ammonia also acts as an oxidizing ag...Gene Identified For Heart Defect That Causes Sudden Death In Young People
...ath occur only in the larger left ventricle, which pumps blood to the rest ofthe body. This ventricle-specific occurrence mystifies researchers. "As far as we know, the same genes are found in the right ventricle as the leftventricle," Roberts says. "The gene may not be present in one of the ventricles,bu...Heart Disease Symptoms Worsen When Body Tries To Adapt
...apacity of heart muscle to contract and relaxas it pumps blood throughout the body. As a result, the wall of the leftventricle -- the heart's main pumping chamber -- thickens, leaving little roominside the chamber for blood to fill. The wall also can stiffen, furtherimpairing the heart's ability to contr...Quarterly News Tipsheet -- Research Highlights From Pacific Northwest National Laboratory
... grazing practices on range land. Pint-sized heat pumps - Pacific Northwest thinks small - when it comes to heatpumps. Researchers at the laboratory are developing a heat-actuated heat pumpsmall enough to fit within the walls or floor of a home to provide efficientspace heating and cooling. Increased e...Seabed Silt In Indian Ocean Consists Of Remains Of Summer Plankton
...n monsoon along the edge of the Indian Ocean. This pumps up the nutrients required for the plankton to bloom, including nitrate and phosphate, from deeper water levels into the well lit surface ocean. Conditions for growth are therefore at their best during the summer in the top 150 metre layer of the ocea......d the world-could significantly improveimplantable pumps currently being tested, according to Doyle. "Our v...mpared to frequent insulin injections, Doyle says, pumps seem to providepatients with improved control of their blood-sugar levels, so that they're lessvulne...DFG to set up 21 new collaborative research centres in 2000
...utch systems, crankshafts for pumps, high-pressure pumps for direct injection car engines -- to discover the tools required for the employment of these materials under thermal-mechanical loads. Speaker: Prof. Dr.-Ing. Karl-Heinz Zum Gahr, Institut fur Werkstoffkunde II, tel.: 07247/82 3897 A new collabor......"It works very much like a human heart. If a heart pumps too fast, it can't really pump any blood before it starts to relax again." Because the scientists were able to describe the biophysical, electrophysiological and behavioral effects of this mutation, they now know every step in the causal chain ...