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Tag: "stability" at biology news

Genes affecting blood pressure change as children become adults

... children are growing, hormones are raging and the stability of adulthood has not yet been reached," says Dr. Snieder. Those factors prompted him and his colleagues to look at what happens to blood pressure and related hemodynamics ?such as heart rate and how much blood the heart pumps with each beat ?near the...

Salmonella bacteria use RNA to assess and adjust magnesium levels

...l, responds to magnesium ions, key elements in the stability of cell membranes and reactants in an energy-makin...most cells. "Magnesium ions are essential to the stability of several different critical processes and structures in the cell, so there has to be a fairly intr...

Wisconsin scientists grow two new stem cell lines in animal cell-free culture

...at further work is needed to understand chromosome stability of stem cells during long-term culture." In early 2005, WiCell scientists reported that they were able to culture stem cells in the absence of mouse feeder cells, the most prominent animal product in stem cell culture systems. The new work effecti...

Afghanistan to protect wildlife and wild lands

...decade. "Conservation is critical for recovery and stability in a country where so many people directly depend on local natural resources for their survival. Conservation can also inspire local communities and even neighboring countries to work together to protect the region's natural heritage." Afghanistan's...

DNA: Bacteria's survival ration

...icance of inorganic processes, citing the chemical stability of genetic material. If a thick layer of DNA were exposed to the sun, he said, only molecules at the top would break down chemically, while bacteria would eat the rest from the bottom up. Nevertheless, Finkel said, DNA remains a backup nutrient for ...

NASA technology helping injured US troops

...A's technology in the walker's harness gave me the stability to do squats and knee raises I could never do before." Physical therapists at Kindred Hospital of Greensboro, N.C., have discovered yet another use for the technology. "We use SAM with bariatric patients ?individuals who are remarkably overweight,"...

Survivors of childhood polio do well decades later as they age

...f weakness later in life, they can expect years of stability without the need for major lifestyle modifications." ...

Connect the Quantum Dots

...or researchers to further improve its sensitivity, stability and reproducibility for biomedical applications. "Our method has a long-term impact on biomedical diagnostic applications which currently rely on the fluorescence of organic dyes," says Francisco Raymo, Ph.D., associate professor of chemistry in th...

Study identifies new role for breast cancer susceptibility gene

...le in tumor suppression beyond maintaining genomic stability by regulating intercellular signaling within the tissue microenvironment. This view will extend BRCA1's tumor suppression function to the surroundings that influence the fate of neighboring cells and fortify the pathogenic relevance of its defect to ...

Brain-computer link lets paralyzed patients convert thoughts into actions

...e, can control a cursor with significantly greater stability than the first two. He can stop cursor movement at will, "click" on icons and type messages using assistive software. "We believe these advances could ultimately enable a paralyzed person to control communication devices, medical devices, computer...

Proteins as parents

...eletal muscle and it gives the heart the necessary stability to resist the pressure of the inflowing blood. A...f the A'/G section was critical for the mechanical stability of the domain, whereas other parts of the domain, including the C, D, and E strands, only played a l...

A splice of the action: Translational role for WT1 isoform

...t mRNAs by aiding in the transport and cytoplasmic stability of unspliced, intron-containing mRNA. Dr. Hammarskjold explains that "the general impact of this study is that it highlights the links that exist between transcription and post-transcriptional gene regulation and the importance of alternative splicin...

Stormy days ahead for coral reefs

...cidity of the ocean. This is likely to reduce the stability of coral reefs, and amplify the damage done by tropical storms in coming decades. Moreover, other effects of global warming and human activity could impair reefs' capacity to bounce back from periods of high wave forces, say the researchers. T...

A simple feedback resistor switch keeps latent HIV from awakening

...hat explained Tat circuit shutoff and possibly the stability of HIV's latent state. In the Tat resistor model, as in the cell, Tat deacetylation occurs at a much faster rate than acetylation. Deacetylated (inactive) Tat can take one of two paths--reconversion in to acetylated (active) Tat, or destruction o...

Coral reefs are increasingly vulnerable to angry oceans

...cidity of the ocean. This is likely to reduce the stability of coral reefs, and amplify the damage done by tropical storms in coming decades. Other effects of global warming could limit the capacity of the reefs to bounce back from periods of high wave forces, according to the researchers. For example, episo...

Two-faced protein can stop metastasis or promote it, researchers say

...us, p120 acts as a "rheostat" that promotes either stability when associated with E-cadherin or motility when it interacts with mesenchymal cadherins, he says. The investigators say that further research is needed to see if p120 functions the same way in living tissue as it does in laboratory cell culture, an...

Protein folding: Building a strong foundation

...owledge-based, statistical approach to predict the stability cores of proteins," Ma said. "Our results suggest ...olved for optimizing both the folding rate and the stability of proteins." Wittung-Stafshede's group, which specializes in experimental studies related to prot...

Regulating the nuclear architecture of the cell

...atures of nuclear architecture, maintaining genome stability in the fruit fly Drosophila melanogaster. Their re...t continues to point to an understanding of genome stability in humans," says Karpen, who heads Berkeley Lab's Department of Genome and Computational Biology. Ka...

Heavy smoking cuts women's chance of pregnancy -- even with donated oocytes

... cell. It could be that heavy smoking disrupts the stability of cells in the lining of the uterus differently in some women to others or triggers a response in the embryo itself, resulting in a reduced general pregnancy rate overall, but an increased chance of multiple pregnancy in those who do become pregnant...

Bones at the nanoscale

...chrotron X-rays. This study explains the enor-mous stability and deformability of bones. The hierarchical structure of bones makes them able to sustain large strains without breaking, de-spite being made of essentially rigid units at the molecular level. The re-sults are published this week in the PNAS online ...

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