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Tag: "under" at biology news

Single molecule extends fat mice lives by reversing gene pathways associated with disease in obese

...wines and produced by a variety of plants when put under stress. It was first discovered to have an anti-aging properties by Sinclair, other HMS researchers, and their colleagues in 2003 and reported in Nature. The 2003 study showed that yeast treated with resveratrol lived 60 percent longer. Since 2003, ...

ASU researchers test antibacterial effects of healing clays

...s a toxin, lesions, and destroys the fatty tissues under the skin. "The toxin is immunosuppressant; the patients feel no pain and the body mounts no response to infection. It leads to disfigurement, isolation, not unlike that seen in leprosy," Haydel explains. "Traditional antibiotics can only make a di...

Global map shows new patterns of extinction risk

...tirely may affect mammals such as tigers which are under threat from poachers, and amphibians which are being diminished by diseases brought into their habitat by non-native fish. "This means that even if a mountainous area has a real problem with endangered amphibians in its creeks and rivers, mammal ...

Mutant gene causes severe kidney disease in infants

...unding the glomerulus. Podocytes are currently under intensive study, because scientists believe they play a vital role in the blood filtration process. Identifying genes and proteins that are active in podocytes will help scientists understand how they work. "We found that PLCE1 is expressed in dev...

Chronic jet-lag conditions hasten death in aged mice

... found that the young mice generally survived well under the various conditions. In contrast, the light-cyc...ip of the old mice. While 83% of old mice survived under the normal schedule, 68% survived under the backward-shift regimen and 47% survived under the forwar...

Record ozone loss during 2006 over South Pole

...ill not vanished from the air despite being banned under the Montreal Protocol (1987). During the southern hemisphere winter, the atmospheric mass above the Antarctic continent is kept cut off from exchanges with mid-latitude air by prevailing winds known as the polar vortex. This leads to very low temp...

German researchers develop first non-invasive test to measure skin aging

...move a sample of tissue and analyze it in the lab, under a microscope or by other methods. In particular, it is impossible to monitor variations in the very same spot as aging progresses. "You would like to measure changes in collagen content over time," Dr. Koehler said. "Moreover, current techniques prov...

Gold nanoparticles prove to be hot stuff

...power is used, the heat could damage the molecules under study. Thus, gold beads would not be useful for temperature-sensitive experiments or applying force to molecules. But the heating effect could be useful in raising local temperatures in certain experiments, such as heating a protein just enough to al...

Protein structure initiative launches new resources for the scientific community

.... With $5.4 million in funding over five years and under the direction of Joshua LaBaer, M.D., Ph.D., the new PSI-MR will store and ship PSI-generated clones, which can be used to make specific proteins for studies on their structure and function. Researchers will be able to order clones for a minimal fee ...

Tearing down the fungal cell wall

...mination rate, lower survival rates for the spores under adverse environmental conditions, and a reduced ability of the fungus to damage the host plant. These observations may open up a route to develop new and innovative research strategies aimed at understanding the host-pathogen interaction for this des...

Fight weeds with plant pathogens

...ore than 200 plant pathogens that have been or are under evaluation for their potential as bioherbicides. ...

New findings could lead to vaccine for severe malaria

...." The research group from Karolinska Institutet, under the leadership of Professor Mats Wahlgren, has been working with colleagues from KI's partner university in Uganda to study in detail how the parasite infects the placenta. Their results, which are published in the American scientific journal PNAS, c...

Bones at the nanoscale

...norganic components at a micro and nanoscale level under tensile stress. The scientists realised that when strain/pressure is applied to a bone, this is ab-sorbed by soft layers at successively lower length scales, and less than a fifth of the strain is actually noticed in the mineral phase. The soft st...

Two nerve cells in direct contact

...rs. The Neuronal Information Processing department under the leadership of Alexander Borst has recently participated in the graduate training program "School of Systemic Neurosciences" at the Ludwig Maximilian University in Munich. ...

New clues to how sex evolves

...ditic and grows to maturity in only three days, is under a lot of competitive pressure to reproduce quickly...produce, and mature more slowly." Evolution under the microscope The tandem arrangement and structural similarities of the him and zim genes sugge...

New study finds chocolate chip cookies lower cholesterol

...even for individuals with total cholesterol levels under 200 mg/dl. The randomized, double blind study researched 33 healthy adults with moderately high cholesterol between the ages 35?5 at the University of Connecticut, Storrs, CT. Participants were randomly assigned to the Right Direction Cookie group...

Global changes alter the timing of plant growth, scientists say

... two groups to overlap in their seasonality, where under current conditions they flower at separate times. ...he growing season is extended, slower plant growth under elevated carbon dioxide could reduce the overall productivity of the ecosystem," said Cleland. Sai...

Designer babies - what would you do for a 'healthy' baby?

...ventions as "design acts" more readily than people under 25. Because of "parental uncertainty" - the idea than women know for certain if a child is their's whereas men do not ?men show a significantly greater preference than female parents for their children to inherit their own characteristics. Parents se...

A buffet for early human relatives

...th, similar to tree rings. Perikymata are produced under the gums during the animal's juvenile years, when teeth are growing. Each laser sampling vaporized enamel that formed during several months and thus represented what Paranthropus ate during that period. By taking several samples off the length of...

Gene signature assesses breast cancer outcomes

...of patients 55 years or younger with breast tumors under 5 cm. The 231 genes were reduced to a core group of 70 that make up a genetic signature to predict outcomes in a separate group of patients from the same institution. To determine whether the 70-gene signature performed better than traditional risk ...

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