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Tag: "underlying" at biology news

Rutgers researchers scientifically link dancing ability to mate quality

... attractiveness, therefore indicates an organism's underlying quality as a potential mate. The study showed that higher-rated dancers were typically people with greater body symmetry. "At least since Darwin, scientists have suspected that dance so often plays a role in courtship because dance quality tracks wi...

Multiple genes permit closely related fish species to mix and match their color vision

...al of seven "cone" (color-sensing) visual pigments underlying color vision in these cichlids. They have measured the sensitivities of the cones to different wavelengths of light and isolated the seven genes that give rise to the pigment proteins. The seven cone types have maximum sensitivities ranging from the ...

Researchers quantify more noise in gene expression

...) to devised computer algorithms that identify the underlying sources of variation at the basic level of life: unscripted fluctuations within individual cells and variations between identical cells. "Scientists might assume that natural selection would prune any sloppiness at the level of gene expression, but ...

Machinery of the 'marijuana munchies'

...e had little understanding of the neural circuitry underlying this effect. Understanding this circuitry has important practical implications because blocking the cannabinoid receptor, CB1, offers a promising approach to treating obesity. One such compound, rimonabant (trade name Acomplia TM ) is already underg...

Underlying cause of massive pinyon pine die-off revealed

...h heat that accompanied the recent drought was the underlying cause of death for millions of pinyon pines throughout the Southwest, according to new research. The resulting landscape change will affect the ecosystem for decades. Hotter temperatures coupled with drought are the type of event predicted by global...

Gene controls whether fear is a factor

...ng, little is known about the molecular mechanisms underlying fear reactions," said lead author of the study by .... As a first step to unravel the molecular events underlying fear learning, Shumyatsky's group recently identified several genes present at particularly high lev...

Bigger brain size matters for intellectual ability

... has provided some of the clearest evidence on the underlying basis of differences in intelligence. The study involved testing of intelligence in 100 neurologically normal, terminally ill volunteers, who agreed that their brains be measured after death. It found bigger is better, but there are differences bet...

Regenerating worms help elucidate stem cell biology

...her this humble worm can illuminate the mechanisms underlying the unique biology of stem cells. ...

Researchers learn how blood vessel cells cope with their pressure-packed job

...embranes in a manner similar to how they attach to underlying blood vessel tissue in the body. The researchers isolated endothelial cells from the bovine aorta, grew the cells in culture flasks, and seeded them onto the silicone membranes. After the cells grew into confluent layers, a piston-like "indenter" was...

Housecat-sized Siberian tiger cubs get collared

...en our patients and identify the genomic mechanism underlying this important disease," says Morrow. Contact: Bernice Morrow, Ph.D. Professor, Albert Einstein College of Medicine Phone: 718-430-4274 E-mail: morrow@aecom.yu.edu Looking for genes in all the right places Geneticists rely on variation, o...

Studies on human genome variation provide insight into disease

...en our patients and identify the genomic mechanism underlying this important disease," says Morrow. Contact: Bernice Morrow, Ph.D. Professor, Albert Einstein College of Medicine Phone: 718-430-4274 E-mail: morrow@aecom.yu.edu Looking for genes in all the right places Geneticists rely on variation, o...

Purdue's gold nanorods brighten future for medical imaging

...niques that use light to analyze blood vessels and underlying tissues. "One obstacle is that light in the visible spectrum does not pass through tissue very well," said Alexander Wei, an associate professor of chemistry who worked with Cheng and other Purdue researchers, including Philip S. Low, a professor of...

Tissue regeneration operates differently than expected

...eriments were focussing on the molecular mechanism underlying the cell fusion process. In these investigations, so-called "chimeric" mouse embryos were produced from mesenchymal stem cells and several mouse mutants: Obviously, the stem cells are recruiting the IL-4/NFAT signalling pathway which also is involved...

A step toward the $1,000 personal genome using readily available lab equipment

...enome requires a significant paradigm shift in our underlying approach to the DNA polymer," write the Harvard scientists. The new technique calls for replicating thousands of DNA fragments attached to one-micron beads, allowing for high signal density in a small area that is still large enough to be resolved t...

NYU biologists map out early stages of embryo formation

...ing us to begin to visualize the molecular network underlying a complex process like early embryogenesis as a whole." These analyses suggest that out of the almost 20,000 genes in C. elegans, the embryo requires a core set of less than 1,000 genes to coordinate the early events that guide the development of th...

Enzyme affects hypertension by controlling salt levels in body

... Center have found. The findings shed light on the underlying mechanisms that cause hypertension, and may also help explain why patients with hypertension linked to salt intake often need to take potassium supplements in order to keep their high blood pressure in check. The study will appear in an upcoming iss...

Molecular mechanism of feather formation found

...n of Bmp2 in feather buds as they first grew. The underlying assumptions of the model were found to be true in developing feathers. These findings suggest that simple relationships between developmental genes can provide the basis for the formation of complex forms. The researchers predict that a more complic...

NYU chemists use computer simulation to enhance understanding of DNA transcription

... gene expression. However, the molecular mechanism underlying this process remains unclear. The research team, which included NYU chemists Tamar Schlick, Jian Sun (now at the Cornell Medical School), and Qing Zhang, analyzed a 12-nucleosome array. Using a variety of salt conditions, the researchers found that ...

Methamphetamine Abuse, HIV Infection Cause Changes in Brain Structure

...t the same brain regions, so understanding how the underlying mechanisms interact also may lead to more effective therapies and the information should be useful in guiding future studies,?Dr. Volkow concludes. ...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

...n such high- risk patients as those with diabetes, underlying renal disease, and the elderly. In the kidneys, such "insults" lead to destruction of kidney tubular and vascular cells, initiating a significant inflammatory response. Recovery of kidney function that is adequate for patient survival depends primari...

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