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Tag: "date" at biology news

Mechanical 'artificial hearts' can remove need for heart transplant by returning heart to normal

...ved was far greater than what has been reported to date for any other therapy in patients with severe, but less advanced, forms of heart failure. "The study also highlights the fact that 'end stage' heart failure can be reversed and that the heart has the capacity to regenerate itself. It therefore sti...

Novel laboratory technique nudges genes into activity

...strate the most effective and consistent method to date for coaxing genes into making the proteins that carry out all of life’s functions ?a process formally called gene expression. In any medical specialty, Dr. Janowski said, there are conditions where increased gene expression would prove beneficial...

Genes and genius: Researchers confirm association between gene and intelligence

...Louis, has gathered the most extensive evidence to date that a gene that activates signaling pathways in the brain influences one kind of intelligence. They have confirmed a link between the gene, CHRM2, and performance IQ, which involves a person's ability to organize things logically. "This is not a...

Fish growth changes enhanced by climate change

...imilar characteristics to the growth rings used to date the age of trees. The work was done in collaboration with the Victorian Marine and Aquatic Fisheries Research Institute, which has specialist skills in analysing otoliths. Water temperatures have been obtained from a 60-year-long record at Maria ...

A revolution in the monitoring of unborn babies

...the device to go on sale in October this year. “To date we have successfully completed over 33 per cent of the clinical trial. We expect to complete clinical trials in July 2007. This represents a tremendous achievement to turn a research device into a medically approved product in only two years ?an expe...

'Terror bird' arrived in North America before land bridge, study finds

...researcher worldwide has applied this technique to date the age of fossils: professor Clive Trueman from the University of Southampton in England. "It is very difficult to assess the age of fossil bones directly as they are too old to be carbon dated," Trueman wrote in an e-mail. "Bones can also be move...

Gene study shows three distinct groups of chimpanzees

The largest study to date of genetic variation among chimpanzees has found that the traditional, geography-based sorting of chimps into three populations—western, central and eastern—is underpinned by significant genetic differences, two to three times greater than the variat...

UF scientists discover new genus of frogmouth bird in Solomon Islands

Your bird field guide may be out of date now that University of Florida scientists discovered a new genus of frogmouth bird on a South Pacific island. New genera of living birds are rare discoveries ?fewer than one per year is announced globally. David Steadman and Andrew Kratter, ornitho...

Eating less salt could prevent cardiovascular disease

...ovides some of the strongest objective evidence to date that lowering the amount of salt in the diet reduces the long term risk of future cardiovascular disease, say the authors of the report. Researchers followed up participants from two trials completed in the nineties which had been conducted to ana...

Applied scientists create wrinkled 'skin' on polymers

...rinkles--along desired paths. Specific examples to date include "S" shapes, circular patterns, and long horizontal channels akin to the repeating tines of a closed zipper. "Irradiation by the ion beam alters the chemical composition of the polymer close to its surface and forms a thin stiff skin which ...

Global 'sunscreen' has likely thinned, report NASA scientists

...esigned to observe clouds and weather systems that date back to 1978. The resulting data show large, short...eam conducted the most comprehensive experiment to date using computer simulations of Earth's 20th-century climate to investigate the dimming trend. The com...

Researchers first to map gene that regulates adult stem cell growth

...n that has been examined for effects of Latexin to date is in bone marrow. Van Zant said it is possible, even probable, that other stem cell populations in tissues such as the liver, skin, pancreas or brain may be similarly affected by Latexin. This could open up new therapeutic strategies such as using s...

Smithsonian scientists discover new marine species in eastern Pacific

... fishes. Since most studies of the Eastern Pacific date back 100 years, it is vital to obtain current data from the area. ...

LIAI completes world's most comprehensive analysis on influenza virus data

... A virus antibody and T cell epitopes published to date worldwide, drawing from the NIAID's Immune Epitope Database, a new worldwide scientific resource that went public last summer. LIAI researchers developed the database ?which is the world's largest repository of scientific data on how the body's immu...

New details on how the immune system recognizes influenza

... have completed the most comprehensive analysis to date of published influenza A virus epitopes--the critical sites on the virus that are recognized by the immune system. The findings, reported by researchers at the La Jolla Institute for Allergy and Immunology (LIAI), are being published online this week...

Female chimps keep the bullies at bay

...ogy and Sociobiology. Most studies of primates to date have suggested that females synchronize their reproductive activities. However, it has been very difficult to demonstrate this analytically. Matsumoto-Oda and colleagues have developed a new index ?the estrus synchrony index* - to analyze whether f...

Researchers identify ovarian cancer biomarkers

...he study analyzed the largest number of samples to date in tumor vasculature, or blood vessel, profiling. While many of the genes identified in this analysis have been shown previously to be involved in tumor vasculatures for other cancer types, several of the markers appear to be new. In addition, the...

Researchers from the University of Navarra analyze new kinds of cancer-fighting antibodies

...se in patients began a year and a half ago, and to date no conclusions as to their effectiveness has been published. ...

Tundra disappearing at rapid rate

...ast 300 years. Using tree rings, they were able to date the year of establishment and death of spruce trees and reconstruct changes in treeline vegetation. The study is published in the "Journal of Ecology." They found that a rapid change in response to climate warming during the early mid 20th century...

Rare soft-shell turtle, nesting ground found in Cambodia

... relaxed in the late 1990s. “Our survey work to date has documented some of the highest freshwater biodiversity values in the entire Lower Mekong Basin,?said Mark Bezuijen of WWF’s Living Mekong Program, who led the team. “We discovered an entirely new plant species, Amorphophallus Sp., along with surv...

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