Tag: "permeable" at biology news
Popular 'Cure-All' Tea Can Cause Toxic Reactions
...lly an aggregate of yeast and bacteriacovered by a permeable
membrane, available in health food stores) in tea andsugar to create a tonic. Claimed therapeutic powers include: curing cancer,lowering blood pressure, increasing vitality, increasing T-cell counts,relieving arthritis pain, cleansing the gall blad...
Spinal Cord Injury Treatment May Improve With New Findings On Nervous System Damage
...amate receptor, the AMPA receptor, which is not so permeable
to calcium. Second, they observed that even high levels of glutamate or AMPA fail to killoligodendrocytes in culture. Goldberg and McDonald were culturing different types of non-neuronal cells frommouse brains. They observed that one type of cell, t...
USGS Responds to Amphibian Declines With Program In Great Smokey Mountains National Park
...d that certain traits of amphibians--such as their permeable
skin, their ability to live on land and in the water, and their complex life cycles--justify their use as indicators of environmental health. Dodd said that this is the largest field survey undertaken in any eastern U.S. National Park to determine th...
Groundwater Injection Process Filters Out Contaminants
...other remediation method, called a trench and fill permeable
barrier,involves digging trenches to act as barriers. The trenches are filled with ironparticles that react with and filter contaminants. But trenches cannot be dugdeep enough to reach groundwater in many locations, including the Hanford Site. ...
Antibacterial implants could prevent infections, save patients' lives
...lanted in the body, fluids pass through that thin, permeable
outer coating and dissolve the polyethylene glycol, which makes the polyurethane porous. The antibiotic then leaches out of the polyurethane. The coating acts as a barrier to the antibiotic, controlling the rate at which it is released to the surfa...
Antimalarial drug may point way to new class of antibiotics
...the bacteria, making them more permeable
to the gentamicin, which ordinarily don't penetrate the bacterial cell wall very well. The mefloquine compounds enable the gentamicin to enter the bacterium and go to work," he said....
Conservation biologist Michael Lannoo to win Field Museums Parker/Gentry Award
...anaries in the coalmine.Because their thin skin is permeable
to water and grunge, frogs and other amphibians serve as excellent bioindicators. The presence of abundant, healthy amphibians indicates good quality aquatic and terrestrial habitats. Over the past several years, however, the number of amphibians has...
Paradox of groundwater age has implications for hydrology
...gh aquifers that are constrained by layers of less permeable
rock called aquitards. Hydrologists commonly figure that a groundwaters age reflects the time it takes to migrate along the aquifer conceptually like the time it takes for water molecules to flow through a pipe. But water molecules dont see an aqui...
Stressed intestine can give rise to food allergy
... whilst stressed. The intestinal wall becomes more permeable
under stressful conditions. Harmful substances penetrate the permeable
intestinal wall where they then cause a panic response by the immune system. That could be the start...
Anthrax drugs used to treat adults can treat children, too
...ults do and their skin is more permeable
as well. "We don't know the mortality rates in children," Nahata said. "Nor do we know the likelihood of cutaneous anthrax progressing into a systemic infection or, worse yet, meningitis." ...
Beyond patches and pills: the remarkable future of drug delivery
...lief within minutes. The ultrasound makes the skin permeable
in both directions, not just allowing large molecules to enter, but also letting them out. "Not only could you deliver drugs non-invasively, but you could go the opposite direction," Langer says. "You zap yourself for 15 seconds in the morning, put [...
Acoustic technique could disinfect medical instruments without heat or harsh chemicals
...." Ultrasound has been used elsewhere to make skin permeable
enough to admit drug compounds. Cunefare suspects... a similar effect, making the bacterial cell walls permeable
enough to admit the alcohol molecules. Though the researchers studied only the technique's effect ...
More dialysis, highly permeable artificial kidney may not aid some, UT Southwestern researcher finds
...002 Longer dialysis treatment and use of a highly permeable
artificial kidney may not improve survival rates o...may improve survival in women, however, and a more permeable
membrane may reduce the risk for cardiovascular complications in patients on hemodialysis. The find...
Gene may produce drought-resistant plants
...le that is thicker or more rigid so that it's less permeable
to water loss," said Matt Jenks, associate profess...hin the cuticle," he said. "The plant becomes very permeable
to water and overall is less able to withstand drought conditions." The study using the mutant wax2 ...
Models help estimate children's exposure to toxins
...ults, young children have cell walls that are more permeable
to environmental toxins. Babies are born with incomplete liver and kidney functions; the ability to detoxify chemicals matures with age. Children also have higher surface-to-volume ratios. So if a child and an adult are exposed to the same environmen...
New approach limits damage after heart attack and improves survival, say Scripps Research scientists
...bterranean tunnel might cause the tunnel to become permeable
to groundwater, blood vessels become leaky when the mortar that holds these endothelial cells together crumbles. A few years ago, Cheresh and his colleagues discovered that mice born without the ability to make certain proteins belonging to the Src...
Epilepsy: Signals 'brake' in brain impaired
... important ion pore is the Kv4.2 channel, which is permeable
for positively charged potassium ions. This channel is mainly located at the signal inputs of a neutron, the dendrites, and has an important function there: it absorbs incoming excitant signals from other nerve cells. They 'trickle away', so to speak...
New imaging technology at Joslin shown to detect early signs of type 1 diabetes
...pancreas. If these vessels have started to become permeable
as a result of islet inflammation, more CMFN tends to leak out and collect in the surrounding tissue, as can be seen on the MRI. This technique allows researchers to observe this early inflammatory process over time. "Thus, we have the means to non...
DuPont developing new protective suits for military, first responders
...these new, lightweight suits contain a selectively permeable
membrane developed by DuPont that will help protec...ort -- the diffusion of water across a selectively permeable
membrane -- this membrane allows sweat evaporation and body heat to escape to keep wearers cooler wh...