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Tag: "many" at biology news

Human genetic 'deserts' are teeming with significant life

...ond will say. He and his team are among the many international collaborators working together on a pilot project to use as a ‘reference set’ by the ENCODE consortium, launched in 2003 by the National Human Genome Research Institute, part of the US National Institutes of Health, with the aim of iden...

CU study reveals why starling females cheat

...sue. While it has long been known that males of many species cheat and mate widely to produce as many offspring as possible to spread their genes, the reasons behind female infidelity appear more comple...

The mouflons of the Kerguelen archipelago

...enetic variety in a population. The environment of many animal and plant populations has been modified by human activity. In many cases, we are witnessing a loss of biodiversity. While scientists ask themselves about our impact on...

Researchers develop buckyballs to fight allergy

... at the VCU School of Medicine. “Researchers in many fields are aware of the potential fullerenes have, however, we are the first to show they can turn off the allergic response and basic immune reactions,” he said. According to Kepley, who is the principal author of the paper, the buckyballs are ab...

Study identifies 5 genetic themes key to keeping stem cells in a primitive, flexible state

...etic techniques have become increasingly powerful, many scientists have sought a more molecular definition of stem cells, based on the genes they express. Now, a team of Canadian scientists has identified 1,155 genes under the control of a gene called Oct4 considered to be the master regulator of the st...

Male circumcision overstated as prevention tool against AIDS

...reason is that Africa as a whole has four times as many prostitutes as the rest of the word and they are m...s infected. Some southern Africa countries have as many as 7% of their adult females infected and working as prostitutes while in the developed world typica...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...gene therapy agents into human clinical trials for many devastating brain disorders,” said Paul Greengard, PhD, chairman of the Neurologix Scientific Advisory Board and recipient of the 2000 Nobel Prize for Physiology or Medicine for his work related to how brain cells communicate. “The significant and su...

Ancient retrovirus sheds light on modern pandemic

...hat retroviruses have been entering the genome for many millions of years, and so humans share many retroviral DNA fragments with their primate cousins. Such vestiges of primitive infection, rendered ...

Ice Age extinction claimed highly carnivorous Alaskan wolves

The extinction of many large mammals at the end of the Ice Age may have p...egafaunal” extinction because of the large size of many of its victims) is controversial. It has been variously blamed on human hunting or climate change, o...

Smoking rate has plummeted in New York City

...s leading the way on tobacco control. There aren’t many programs that can prevent 80,000 premature deaths this quickly.” Ads from the 2006 campaign graphically depicted tobacco smoke’s effects on the brain, lungs and arteries, showing testimonials from sick and dying smokers and their children, inclu...

St. Jude study shows genes play an unexpected role in their own activation

...how this single transcription factor can stimulate many different genes, depending on which tissues are using it and which signaling molecule caused cAMP to put CREB to work,” Brindle said. “It is another clue to how CREB might activate the genes for enzymes that make glucose in the liver, while activatin...

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

...lood, lung and liver progenitor cells that perform many of the functions needed to help replace cells and tissues injured by many diseases, the paper notes. Among the insights into cell and tissue engineering gained from work with...

Experimental gene therapy 'abolishes' arthritis pain and lessens joint damage

...nerve cells involved in pain transmission, with so many more receptors on their surfaces, became drastically more responsive to the naturally occurring painkiller, researchers found. Gene therapy inserts tailor-made genes into cells that can, for instance, direct cells to build more of a needed pr...

Genome of Clostridium botulinum reveals the background to world's deadliest toxin

...s, is a range of genes that allow it to attack the many insect and other small creatures that live in the soil. The ‘chitinases’ produced by these genes can degrade the casing of insects and small crustaceans. It is not only animals that can feel the wrath of C. botulinum, explains Dr Sebaihia: "The s...

'Nurse cells' make life and death decisions for infection-fighting cells

...These nurse cells have been reported to take up as many as 50 destined-to-die thymocytes into their own ce...vered in 1980. Their existence was debated because many scientists found it difficult to believe that a cell could internalize another cell, said Jerry Guyd...

Eavesdropping comes naturally to young song sparrows

...e found the first evidence that young birds choose many of their songs by eavesdropping on the tuneful int...utors, the young birds acquired more than twice as many songs from the tutor on which they eavesdropped, said Michael Beecher, lead author of the study and ...

New research shows sharks use their noses and bodies to locate smells

... are known to have a keen sense of smell, which in many species is critical for finding food. However, acc...lex, dynamic, three-dimensional structures used by many animal species to locate food, mates, and home sites. However, odor itself has no directional proper...

First confirmed common genetic risk factors for breast cancer

...ast cancer risk. "Breast cancer likely involves many risk genes, and each gene only confers a moderate risk for disease," Dr. Liu explained. While the findings of the international research collaboration hopefully will fuel the development of more effective ways of preventing and treating breast can...

Cytomegalovirus exacerbates atherosclerosis through an autoimmune mechanism

...ot only of genes involved in apoptosis but also of many other genes that encode for proteins involved in different aspects of the atherosclerotic process (lipid metabolism, inflammation, adhesion molecules, etc.). For the first time, the study shows that one of these proteins is very important because of ...

New designer lipid-like peptide with lipid nanostructures for drug delivery systems

...y of biological active materials.” Currently, many anticancer drugs are difficult to deliver to patie...s been studied since 2000. In the near future, many colloidal aqueous dispersions, which are similar to milk and some paints, with confined inner nanost...

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