viability

Neuronal 'traffic jam' marks early Alzheimer's disease

...eserve the molecular transport system and thus the viability of brain cells otherwise lost in Alzheimer's. The findings also could ultimately lead to distinctive markers of early Alzheimer's disease that could be used in early diagnostic tests for the disorder, they said. The research team led by Lawrence S. ...

NIH Calls on Scientists to Speed Public Release of Research Publications

...portance of preserving quality peer review and the viability of a diversity of publishing models. Nevertheless, we expect that only in limited cases will authors deem it necessary to select the longest delay period." The NIH policy will achieve several important goals, including: 1. creating a stable arch...

New Scripps Oceanography project to study sediments and ecosystem restoration in Venice lagoon

...unities and carbon cycle * Osmund Holm-Hansen: viability and photophysiology of autotrophic micro-organisms * Hany Elwany: currents, sediment resuspension and turbidity plumes associated with experimental subtidal banks Lisa Shaffer, Scripps director of policy programs and international relations, is...

Bleach found to neutralize mold allergens

...tilled water as a control. They then compared the viability and the allergenicity of the treated and untreated mold. The researchers found that the use of the dilute bleach solution killed the A. fumigatus spores. When viewed using an electron microscope, the treated fungal spores appeared smaller, and lac...

High carbon dioxide levels spur Southern pines to grow more needles

... had been fertilized during her study period. "The viability of leaf area enhancement is really driven by the nitrogen availability," McCarthy said. While nitrogen fertilization enhanced leaf counts in CO2-treated trees, the most heavily fertilized sites conversely suffered the highest needle losses under dro...

Discarded placentas deliver researchers promising cells similar to embryonic stem cells

...stem cells. To this end, they began looking at the viability of amnion as a cell source in late 2001, obtaining discarded placentas from full-term births under an Institutional Review Board-approved protocol. In 2002, the University of Pittsburgh licensed the technology to a company now called Stemnion, LLC, a...

Techniques available to detect soil that inhibits destructive soybean pest

...sed nematode activity. In addition, they know that viability of plants and soil richness, moisture and temperature can affect how active and numerous soybean cyst nematodes are in particular fields. "A key find was that a small amount of suppressive soil or a cyst from a suppressive soil can lower nematode nu...

Bacteria that cause tooth decay able to survive without important biochemical pathway

...but it was not at all necessary for the organism's viability during non-stress conditions," Brady said. Brady's team surmised that two other molecules, called YidC1 and YidC2, might be acting as alternate routes for protein delivery in the absence of the SRP pathway. They tested their hypothesis and found tha...

Computers to save unique type of American red squirrel

... are already in place, concerns about the animal's viability have increased as numbers have more than halved since 1999, dropping from 562 to a recent low of 214. As with the British red squirrel, one of the Mount Graham red squirrel's threats is an introduced species of squirrel. The Abert's tree squirrel l...

Potential heart benefit found in stem cells

...luation, the investigators reviewed the myocardial viability and local wall motion abnormalities, as well as the size of resting and stress-induced perfusion defects. They also measured the global EF and the wall motion score index, which measures the percentage of normal functioning muscle tissue in the hear...

Do plants have the potential to vaccinate against HIV?

...sults have important implications for the economic viability of using plants as bioreactors to produce vaccines against HIV and other diseases. According to Obregon: "Using antibody-antigen fusion molecules may represent a generic strategy to increase the expression of recombinant proteins in plants. It could ...

Study links high levels of nitric oxide to infertility and sperm DNA damage

...an affect human sperm functions, such as motility, viability and metabolism. At low concentrations it can have a positive effect on cells, but a negative effect at high concentrations. "In our study we discovered that there were significantly higher concentrations of nitric oxide in the seminal plasma of infe...

UCSD researchers develop 'smart petri dish'

... of the technique as a complementary tool for cell viability studies." In addition, they add, their method "is noninvasive and can be performed in real time, representing a significant advantage compared to other techniques for in vitro monitoring of cell morphology," that is, for monitoring cells in the labor...

Sperm created in the laboratory from embryonic stem cells produce viable progeny

...een thoroughly tested and many questions about the viability of these cells remain unanswered. Dr. Karim Nayernia and Dr. Wolfgang Engel from the Institute of Human Genetics at the University of Goettingen in Goettingen, Germany and colleagues developed a new strategy for generating mature sperm cells in the l...

Plant diseases threaten chocolate production worldwide

... constraints to cacao production and the continued viability of the world's confectionary trades," said Randy Ploetz, plant pathology professor at the University of Florida, Homestead, FL. Currently, 4 million metric tons of beans worth more than $4 billion are produced each year. The global chocolate market i...

Therapeutic role found for carbon monoxide

...mooth muscle cells without adversely affecting the viability of the endothelial cells. "We discovered that endothelial cells must be present ?and be able to generate NO via nitric oxide synthase [NOS3] -- in order for CO to induce the death of the smooth muscle cells and reverse the symptoms of PAH," explain...

Tearing down the fungal cell wall

...ermeable to water. This has drastic effects on the viability of the spores." Kwang-Hyung Kim, doctoral student and the lead author on the paper, stated: "What we have been able to show is that mutation of the AbNPS2 gene is accompanied by structural changes that occur in the cell wall of the spores, a decre...

Fish growth changes enhanced by climate change

...e change and short-term climate variability on the viability of some species. He said correlations for long-lived shallow and deep-water species suggest that water temperatures have been a primary factor in determining juvenile growth rates in the species examined ?Banded morwong, redfish, Jackass Morwong, ...

Protein may hold key to decreasing organ dysfunction rates in heart transplants

... transplanted tissue, and can seriously impair the viability of replacement organs and jeopardize the health of the patient. The identification of Lcn-2 could be a first step towards reducing this inflammatory response and increasing the success rate of heart transplants worldwide. The study appears in America...

Scientists identify specific enzymes that make meningitis hard to fight

...s added: "The wide importance of DNA repair to the viability of all organisms is well established. However, for the first time this research shows an important role for DNA repair in meningitides fighting off the attack of the body's immune system. "We have examined two enzymes from a family that are known...

Pitt study notes decline in male births in the US and Japan

...her environmental factors that also may affect the viability of a male fetus include the parents?weight, nutrition and the use of alcohol and drugs. In the study, Dr. Davis and her colleagues reported an overall decline of 17 males per 10,000 births in the U.S. and a decline of 37 males per 10,000 births...

Proteasome activator enhances survival of Huntington's disease neuronal model cells

...cally recover proteasome function and improve cell viability in both HD model and patient cells. These remarkable results demonstrate for the first time that it is possible to intervene therapeutically in the proteolytic pathways and organelles that participate in the specific degradation of misfolded and ...

Legal ruling may put endangered species in danger

... existing range, even if that is necessary for the viability of a species." "The proposed rule would have allowed our national symbol, the bald eagle, to become extinct in the lower 48 states, surviving only in Alaska, and it would have allowed the gray whale to become extinct in U.S. waters," Vucetich wen...

Machine preservation may promote more organ sharing

...rgans out of body and provides a way to assess the viability of the organ." Stratta said machine preservatio...ecipient matching through using the pump to assess viability and function. ...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...laughterhouse. Bull sperm will be used to test the viability of cow eggs afterward but human eggs will not be fertilized. Standard cryopreservation has been tried and largely failed in human eggs, says Dr. Emmi, who believes some version of vitrification likely offers a better option for ovarian tissue and ...