Tag: "sodium" at biology news
OT, VP studied as novel psychiatric drug sources; consider gender-specific drug models
... vasopressin V1a/V2 antagonist conivaptin on serum sodium
concentration and effective water clearance in hyponatremia clinical trials."...
Researchers make headway in mystery of migraines
...y which our brain cells communicate." By expelling sodium
from the cell, and drawing potassium from outside, the sodium
pump maintains a gradient of potassium, which is critical for the propagation of electrical signals ...
Breakthrough: Structure of membrane protein described by Hebrew University, German researchers
...s and ends at the point at which it binds with the sodium
or the hydrogen deep within the cell membrane. Near that point two chains of the protein unite into a unique structure." The researchers believe that this unique structure is the basis for the activity of the protein. The protein operates as a kind ...
University of Nevada, Reno research team discovers hormone that causes malaria mosquito to urinate
...quito causes the mosquito to excrete fluid rich in sodium
chloride, the main salt in blood. "Only DH31 causes the massive loss of sodium
chloride which causes the mosquito to pee," Schooley said. "Stimulation of this process when the mo...
TV ads market junk food to kids, new study finds
...n the child-audience ads "would exceed the RDV for sodium
and provide nearly a cup of sugar," said Harrison, a professor of speech communication at Illinois and an expert on media effects on children and adolescents. "How many kids actually eat a diet like that, I can't say," she said. "But it's important t...
Roadways and parking lots threaten freshwater quality in the northeastern US
... are hardening the watershed and feeding it a high sodium
diet that is detrimental to the health of aquatic ecosystems." The changes observed were not subtle. By accumulating in ground water and aquifers, road salt was linked to year-round increases in freshwater salinity. In New York and Maryland, freshwat...
Gene therapy to lower blood pressure just enough
...improves the manner in which the kidney eliminates sodium
or salt from the body and inhibits other systems, such as the sympathetic nervous system, believed linked to development of high blood pressure. "This makes ANP an attractive agent for use in treating blood pressure," said O'Malley. "However, its u...
VCU researchers design new receptor and enhance bioassay to advance drug discovery process
...cessive amounts of electrolytes such as potassium, sodium
and chloride, resulting in electrolyte abnormalities. Two potential outcomes of Bartter's syndrome are kidney failure and inner-ear defects resulting in deafness....
Hormone might cause dangerous pregnancy complication
...take of a wide range of essential nutrients. The sodium
pump contains the target or "binding site" of a gr...ws," said Dr. Lingrel, "and they all worked on the sodium
pump binding site."It turns out that almost all species, from fruit flies to humans, have a site tha...
New genetic link to high blood pressure found
... surface could alter someone's ability to regulate sodium
levels, and therefore blood pressure, Weder explains. The new finding is published by a team that includes Weder and his Tecumseh study team -- but also researchers whose specialties are psychiatry and the genetics of human behavior. Co-author Margi...
Modifications render carbon nanotubes nontoxic
...chment of the chemical subgroups hydrogen sulfite, sodium
sulfite and carboxylic acid. The cytotoxicity of undecorated SWNTs was 200 parts per billion, which compares to the level of 20 parts per billion identified last year for undecorated buckyballs. The modified nanotubes were non-cytotoxic. While cell d...
New discoveries about neuron plasticity linked to learning and memory
...te membrane and allow the passage of potassium and sodium
ions into and out of the neuron, are altered during learning. "The h-channels undergo plasticity, not near the synapse but probably throughout the dendritic tree," says Johnston. To record the changes during learning, cells from the rat hippocampus ...
Mechanism of new 'sudden-death' arrhythmia detailed
...um exchanger protein (NCX1), which trades incoming sodium
for outgoing calcium. The sodium
is then pumped out by the protein enzyme Na/K ATPase. Both of these protein "molecular pumps," NCX1 ...
A meaty, salty, starchy diet may impact chronic lung disease
...nds that eating mostly meat, refined starches, and sodium
may increase the likelihood of developing chronic ...whose diets are rich in meat, refined starches and sodium
are 1.43 times more likely to report new onset of persistent coughs with phlegm than those who consu...
A salty tale: New bacterial genome sequenced from ancient salterns
...plasm, keeping an osmotic balance against the high sodium
chloride concentration outside. That's where evolutionary strategy comes in. Analyzing the bacterium's genome, researchers found that S. ruber's proteins are typically rich in acidic amino acids and relatively poor in hydrophobic (water-repellent) a...
Hearing loss from chemotherapy underestimated
...r chemotherapy compounds to tumors, has shown that sodium
thiosulfate (STS) decreased hearing loss in patients with malignant brain tumors who were treated with carboplatin chemotherapy, which is given with the blood-brain barrier disruption technique. When STS was given four hours after carboplatin, ototox...
Storing carbon to combat global warming may cause other environmental problems, study suggests
...ained. During these chemical exchanges, "you leave sodium
behind, which builds up in the soil to make it saltier," he said. Jackson's former postdoctoral scientist Esteban Jobbgy, now at the Universidad Nacional de San Luis in Argentina, and Kathleen Farley of The Nature Conservancy, also investigated anot...
Common food preservative might provide treatment for cystic fibrosis
...t susceptible to destruction by slightly acidified sodium
nitrite, a common chemical that is widely used in ...re easily destroyed by slightly acidified (pH 6.5) sodium
nitrite. Part of the problem with early and chronic cystic fibrosis, Dr. Hassett explained, is that...
DNA-wrapped carbon nanotubes serve as sensors in living cells
...s of certain atoms -- such as calcium, mercury and sodium
-- the negative charges become neutralized and the DNA changes shape in a similar manner to its natural shape-shift from the B form to Z form. This reduces the surface area covered by the DNA, perturbing the electronic structure and shifting the nano...
Gene variation increases SIDS risk in African Americans
...on contribute to SIDS? The SCN5A gene codes for a sodium
channel, a pore found in cardiac muscle cells that controls the passage of sodium
ions in and out of the cell. "This seemed like a good candidate for a genetic difference that coul...
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