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Tag: "closely" at biology news

Study finds adult stem cells can replicate

...owing that mice deficient in cathepsin G and other closely related proteases failed to develop arthritis after the injections. This led them to look for the mechanisms by which these proteases regulate inflammation. Observations made by Pham's lab and other groups had linked the earliest stages of inflammat...

Certain fish have a special mating preference

...acters that taxonomists use to distinguish between closely related species. Striking diversity Researchers have thought for about 20 years that the striking diversity of genital form results from post-mating sexual selection, such as sperm competition or cryptic female choice. That is, most evolutionists h...

IMF Launches World’s First DNA Database for Myeloma Patients

...acters that taxonomists use to distinguish between closely related species. Striking diversity Researchers have thought for about 20 years that the striking diversity of genital form results from post-mating sexual selection, such as sperm competition or cryptic female choice. That is, most evolutionists h...

Scientists inhibit cancer gene

...umors. Topham says his team will now examine more closely the mechanism behind how DGK iota works to inhibit tumor formation. ...

Study: Well-known protein helps stem cells become secretory cells

...epidermis, its skin-like outer layer. CrebA, or a closely related human gene, might play the same role in certain human cells, too, the researchers say. In juvenile (type I) diabetes, for example, pancreatic cells that normally produce and secrete insulin don't work, and stem cells might be able to help fi...

UNC plant researchers discover proteins interact to form hair-trigger protection against invaders

...amount about all other flowering plants, which are closely related genetically, Dangl said. The new genomics technology, developed by Patrick Brown and David Botstein at Stanford University, has been applied to yeast, fruit flies and humans but not to plants in a large, systematic way. Arabidopsis was the fi...

FDA approves more generic AIDS drugs

...amount about all other flowering plants, which are closely related genetically, Dangl said. The new genomics technology, developed by Patrick Brown and David Botstein at Stanford University, has been applied to yeast, fruit flies and humans but not to plants in a large, systematic way. Arabidopsis was the fi...

Researchers extend mouse lifespan by protecting against free radicals

... UW School of Medicine, examined a method that was closely connected to the free-radical theory. He and his colleagues focused their study on catalase, an enzyme in the body that helps convert hydrogen peroxide into water and oxygen. Hydrogen peroxide is a waste product of metabolism and it can be a the prec...

Genetic links could unlock clues to leading cause of blindness

...e disease, Dawson said. "It's difficult to follow closely the aging of a human over a specific period of time," he said. "People wouldn't tolerate a controlled (living) environment for weeks and years." One of the biggest problems researchers have faced is determining how much of a role genetics plays vers...

Biologists determine genetic blueprint of social amoeba

...um occupies in the hierarchy of life. "It is more closely related to fungi and animals than we had previousl...ately 6,000 found in fungi. And its genes are more closely related to human genes than are the genes from fungi. "That really speaks to how much we will relat...

International Team Determines Geographic Origin of Leprosy

...ant in West Africa. Because type 4 leprosy is more closely related to type 3 than it is to either type 1 or 2, the researchers concluded that North Africans or Europeans probably brought the disease to West Africa. Compared with other disease-causing organisms, M. leprae has very few SNPs ?only one in every...

New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids

...which are targeted against bacterial proteins that closely resemble "self" proteins, leading to crossreactivity with healthy tissues. Dr. Gennaro De Libero from University Hospital in Basel, Switzerland, and colleagues identified a different mechanism where bacterial infections promote activation of T cells ...

Novel plague virulence factor identified

... Research. "Our experiments have demonstrated how closely the Y. pestis-C. elegans model we developed mimics what happens when Y. pestis infects mammals," said Duke microbiologist Alejandro Aballay, Ph.D., lead researcher of the team. "This system should help speed the characterization of both pathogen and ...

New Look at DNA Hints at Origin of UV Damage

... Research. "Our experiments have demonstrated how closely the Y. pestis-C. elegans model we developed mimics what happens when Y. pestis infects mammals," said Duke microbiologist Alejandro Aballay, Ph.D., lead researcher of the team. "This system should help speed the characterization of both pathogen and ...

Compound might defeat African sleeping sickness, clinical trial beginning this month

...en Meshnick and J. Ed Hall of UNC. Scientists also closely involved are Drs. Simon Croft at the London School of Hygiene and Tropical Medicine and Reto Brun and Christian Burri at the Swiss Tropical Institute. "New drugs for illnesses in developing countries often fly beneath the profit radar of large pharm...

Why are coyotes getting more aggressive?

...e been reported in California. Coyotes, which are closely related to dogs and wolves, are ubiquitous in North America, but they rarely have been a danger to humans. Fearful of being hunted and trapped, these large carnivores have typically stayed in wooded areas and away from humans. But now that coyotes ha...

'Punctuated' evolution in the human genome

...er of comparisons of pericentromeric regions among closely related primates suggests extraordinary dynamism, where duplication, deletion, and rearrangement of large segments of DNA occur at an unprecedented scale. Eichler's group performed a comprehensive structural and evolutionary analysis of a 700-kiloba...

Looks matter to female barn swallows

...ample, classic studies have shown that in the very closely related European barn swallow ( H. rustica rustica) , males with long tail feathers attract more mates. Although many previous studies have investigated mating patterns in birds and other animals, this is the first study of its kind to meticulously ...

'Jumping genes' contribute to the uniqueness of individual brains

...istinct antigens. In their study, the researchers closely tracked a single human mobile genetic element, a so-called LINE-1 or L1 element in cultured neuronal precursor cells from rats. Then they introduced it into mice. Every time the engineered L1 element jumped, the affected cell started glowing green [W...

Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses

...morrhagic fever (found in western Siberia) and the closely related Kyasanur forest disease (found in western India). "These diseases are spread by the same tick that carries Lyme disease in the U.S.," says Dr. Bloom. "So, the fact that West Nile virus first appeared or emerged in the U.S. in 1999 should war...

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