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Tag: "these" at biology news

Novel Therapy Tested in Mice Could Chase Away Cat Allergies

... online now. In the future, the investigators say, these promising results could lead to a new therapy not ... for millions of cat-allergic Americans. Moreover, these results provide proof-of-concept for using this approach to develop therapies to prevent deadly food...

Sea skate experiment sheds light on human cell transport

...th the red blood cells of skates to understand how these skinny, graceful fish can swim from salt water to ... water. Vesicles, or tiny fluid-filled sacs, carry these gates up to the cell membrane. The vesicles are inserted into the membrane and a chemical process kn...

Clam embryo study shows pollutant mixture adversely affects nerve cell development

...e scientists have previously studied the effectsof these pollutants individually, this is the first time anyone hasdemonstrated that BCE's components can work together to adverselyaffect neuron growth in a model organism.The study, which is reported in the January 2005 issue of EnvironmentalToxicology and ...

Female sex hormones play a vital role in defense against sexually transmitted diseases

...ms against them." One of the many implications of these findings she says, is that if future studies can f... not understand why, and our hope is that by doing these kind of mouse studies, we can understand the mechanisms." In the first study, female mice received ...

Yale Scientists Find MicroRNA Regulates Ras Cancer Gene

...he nematode round worms, C. elegans. He found that these worms require let-7 RNA for normal development to occur. Without it, cells do not stop dividing and fail to differentiate into the normal structures of the worm ?instead they make an excess of their cells. After identifying let-7 as a cell division ...

Study identifies predictors of HIV drug resistance in patients beginning triple therapy

...e scientists have previously studied the effectsof these pollutants individually, this is the first time anyone hasdemonstrated that BCE's components can work together to adverselyaffect neuron growth in a model organism.The study, which is reported in the January 2005 issue of EnvironmentalToxicology and ...

An HIV Protein Plays a Surprising Role in Gene Activation

... gene activation and viral replication. It affects these processes, the current model holds, by stimulating...—that recruits the TAF-deficient TBP. Altogether, these results show a surprising new role for Tat in stimulating assembly of a transcription complex. What'...

Mouse brain tumors mimic those in human genetic disorder

...r latest paper shows that brain tumor formation in these mice hasseveral of the same distinguishing clinica... occurs before actual tumorformation suggests that these events are important for the developmentof tumors," Gutmann says. "These findings raise the possibil...

New Clues Add 40,000 Years to Age of Human Species

...earch. “It’s fascinating that we can now see that these two rather different individuals were living at the same time and in the same region,?he adds. The researchers also discovered the fossil-rich strata can be linked to sapropels, sediment layers found in the eastern Mediterranean, which, along with i...

Enzyme allows B cells to resist death, leading to leukemia

...lation between high Lynactivity and the ability of these B cells to resist apoptosis. Theauthors suggest that Lyn is involved in the development of B-CLL andthat this enzyme therefore represents an attractive target for therapy.The study will appear online on January 13 in advance of publication inthe Febr...

A bacterial genome reveals new targets to combat infectious disease

...ew antifilarial has been developed in two decades, these results may quickly lead to new therapeutic strategies against these parasites. ### Citation: Foster J, Ganatra M, Kamal I, Ware J, Makarova K, et al. (2005) The Wolba...

Spider Venom Could Yield Eco-Friendly Insecticides

...ore than five years in captivity, a small group of these spiders yields plenty of toxins for King's chemica...mechanism of action at the cellular level. Because these toxins do not affect the mammalian nervous system, it may be possible to use them to create environm...

Solution to Pollution: New Bacteria Eats Toxic Waste

... disposal practices and accidental spills have put these carcinogens in our environment, and nature has fig...made chemicals to clean up contaminated sites, but these microbes will provide a natural solution, said Sims. Bioremediation cleans up the environment by all...

Scientists collaborate to assess health of global environment

...ealth are scheduled for July. According to Mooney, these topics were chosen because the organizations that oversee major international treaties dealing with biological systems requested the information. The lack of adequate data to uphold such treaties is what helped convince the United Nations to initiate...

Poplar trees redirect resources in response to simulated attack

...al and physiological processes within plants using these powerful imaging tools," said Richard Ferrieri, wh.../photos/2005/Jasmonate-300.jpg Scientists produced these positron radiographs by administering discrete pulses of carbon-11-labeled carbon dioxide gas to a s...

Purdue proves concept of using nano-materials for drug discovery

... amount of protein. "It's been very hard to study these proteins because they are difficult to produce in large quantities," Lee said. "The devices we have created offer the promise of making chips capable of running thousands of reactions with the same amount of protein now needed to run only about 10 re...

In the sea slug's defense against lobsters, confusion is key

...ound in the food of spiny lobsters and that indeed these chemicals serve to activate nervous-system pathways that control feeding behaviors of the lobster. The inky secretion also stimulates other behaviors in the lobster, including grooming and avoidance. Ironically, the slug's ability to trick the lobste...

Researchers identify target for cancer drugs

...with called rictor, but he wasn't yet sure of what these two proteins do together. In this latest paper, Sarbassov reports that when mTOR and rictor bind and form a complex, they help activate Akt by adding a phosphate group to a sequence of its amino acids (a process called "phosphorylation"). This proce...

Plant hemoglobins: Oxygen handlers critical for nitrogen fixation

...oglobins are the symbiotic hemoglobins of legumes; these hemoglobins accumulate in root nodules and give these specialized organs their distinctive red color. Legume root nodules accommodate bacteria, called rhi...

Essential mangrove forest threatened by cryptic ecological degradation

...earchers show that, increasingly, the magnitude of these modern irrigation projects has been such that enti...ve been diverted to those of other rivers. Whereas these projects certainly develop the ability to grow crops inland, at the same time such practices drastic...

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