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Tag: "introduced" at biology news

New approach to BSE successful in lab

.... However, it will take years for the method to be introduced to medicine, the researchers warn. Their findings are published in the next issue of the Journal of Clinical Investigation (Vol. 116, No. 12, December 2006). Scrapie, Creutzfeld-Jakob and BSE are among the most unusual diseases known to medical res...

Evolution of Old World fruit flies on three continents mirrors climate change

...cies of fruit fly that is native to Europe and was introduced into North and South America about 25 years ago. ...d vice versa. The fruit flies were accidentally introduced to the Pacific Coast of Chile in the late 1970s and to the North American West Coast in the early 19...

Invasive ants territorial when neighbors are not kin

...e significantly smaller. When Argentine ants were introduced to California 100 years ago, they spread widely because they did not encounter other colonies of Argentine ants. The biologists think that the distinct supercolonies in southern California arose from separate introductions of the ants, possibly in t...

Global map shows new patterns of extinction risk

...or threatened birds because of the danger posed by introduced rats and cats. Mammals are highly threatened across eastern Africa due to hunting and the bush meat trade The tropical, rainforest-clad mountains of northern Australia are home to many declining frog species, although the precise causes of these ...

A sweet step toward new cancer therapies

...to analyze proteins. In this process, proteins are introduced into the mass spectrometer and fragmented by heating until the weakest bonds break. "It's the 'shake-it-til-it-breaks' approach," Hakansson said. Together, the masses of the various fragments provide a sort of fingerprint that reveals the genetic...

Human preference for other species could determine whether they survive

...ven invasive species. He noted that mountain goats introduced to Olympic National Park in Washington state have damaged park ecosystems, but because of their popularity it has been difficult for park managers to remove them. Likewise, while groups of conservationists gather on weekends to pull invasive English ...

Does evolution select for faster evolvers?

...ansfer. It occurs when the DNA from one species is introduced into another. The idea was ridiculed when first proposed more than 50 years ago, but the advent of drug-resistant bacteria and subsequent discoveries, including the identification of a specialized protein that bacteria use to swap genes, has led to w...

Novel laboratory technique nudges genes into activity

... in isolated breast cancer cells. Once the RNA was introduced into the protein mix, the gene was activated, ulti...anism. Although the RNA strands the researchers introduced ?dubbed antigene RNA ?were manufactured, Dr. Corey said the process by which they interact with the ...

Creating new life forms that may help eradicate cancer affecting women

...se that is lethal to cancer. When Listeria is introduced in the body, it has a powerful, direct stimulatory effect on the activities of tumor-killing T cells. "Essentially the modified Listeria vaccines harness the power of the immune system against this infectious agent," explains Dr. Shabahi, "and then d...

Cancer scientists create 'human' leukemia process to map how disease begins, progresses

...of Frederic Barabe, James Kennedy and Kristin Hope introduced a specific leukemia gene into normal human stem cells and injected the genetically altered cells into mice that lacked immune systems. The result? 100% of the mice developed fatal leukemia that displayed the same characteristics and patterns of human...

UCLA/Toronto researchers unlock key to memory storage in brain

...esis. They implanted CREB into a virus, which they introduced into some of the cells in the animal's amygdala, a brain region critical to emotional memory. Next they tested the mouse's ability to recall a specific cage it had visited before. The cage was outfitted with patterned walls and a unique smell. ...

Small molecule dervived from Rb2/p130 could act as cancer therapeutic

...t was synthetically produced in the laboratory was introduced into mice that had been injected with tumor cells. "Tumor growth was inhibited and the tumors began to reduce in size until they disappeared," Giordano said. Giordano said because of the intrinsic nature of the compound, it can be easily reprod...

Stem cells decrease ischemic injury and restore brain function

...as underlined a possible mechanism of action. Once introduced in the area of the brain hit by a stroke, stem cells induce the development of a protective effect in this same area," explains De Simoni. "Therefore, it is not necessary, as proposed in past studies, for stem cells to turn into neurons in order to p...

Application of Genomatix in silico methods reveals novel cancer associated genes

...icer at Genomatix. He continues:" Two years ago we introduced our own concepts of an annotation and biology driven microarray analysis pipeline, and were heavily contested in the beginning. Today it is so rewarding to our scientists and developers to see the impact of our own ideas and research to cutting edge ...

QUT scientists on the way to sifting out a cure for HIV

...in wasted membranes. "With this in mind we have introduced radical changes to the membrane texture because it is the membrane texture which is crucial to the separation efficiency of the material," he said. "It is scientifically known that a mesh structure is the most efficient form of filtration and we a...

Gene therapy for blindness clears hurdle in mice

...erapy in which healthy versions of the gene can be introduced into the eye using an apparently harmless virus to deliver the genetic material. "If we reduce the amount of protein formed by mutated rhodopsin, that may be sufficient to maintain vision in people who are affected by retinitis pigmentosa," Gorbat...

Instruction manual for creating a molecular nose

...zed in-vitro directly from the genetic information introduced to the cell extract. Previous attempts to create biosensors from membrane proteins failed due to an idiosyncrasy of these proteins: they are not water soluble. In the past, researchers tried to remove the proteins from their biological membranes b...

Wheat can fatally starve insect predators

...e Hessian fly, which German mercenaries apparently introduced into North America during the Revolutionary War, causes catastrophic losses if not controlled by resistant plants. During the 1980s the state of Georgia suffered $28 million in lost wheat in one year after the fly overcame the plants' resistance gene...

New mechanism for nutrient uptake discovered

...led phosphorylation, where a phosphate molecule is introduced to another molecule, changing the latter, and preparing it for a chemical reaction. They have found a site for phosphorylation and are looking at this possibility further. A leading expert in transporters, Professor Dale Sanders, head of the biol...

Molecular differences between early and advanced melanomas could provide new drug targets

...askaran Govindarajan, PhD. When the scientists introduced the gene for Akt into radial growth melanoma cells...owth. When melanoma cells overexpressing Akt were introduced into immunocompromised (nude) mice, the mice developed aggressive tumors that expressed high levels ...

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