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Tag: "introduced" at biology news

Solvent exposure linked to birth defects in babies of male painters

...pposedly less harmful water-based paints that were introduced to replace traditional solvent-based paints formerly common in the Netherlands. "We need to evaluate and compare the influence of resulting solvent exposures on reproductive health," said Dr. Burstyn, who collaborated previously on a study showing th...

Gene therapy study takes aim at prostate cancer

... in the prostate," said Kadmon. When the gene is introduced into the tumors of animals lacking RTVP-1, it suppresses the formation of new blood vessels. It causes what is known as "apoptosis" or programmed cell death in prostate cancer cells and also activates the immune system to fight cancer cells. "We ar...

New data from NIH lab confirms protocol to reverse type 1 diabetes in mice

...that destroy islets in type 1 diabetes. They also introduced donor spleen cells to retrain the immune system no...insulin-producing islet cells, indicating that the introduced spleen cells contribute to islet recovery. The current study also showed that the degree of spleen c...

Parkinson's mutation stunts neurons

...activity compared to the normal version. When they introduced the mutant forms into cultures of neurons, they sa...ell cultures. What's more, when the researchers introduced the mutant form of LRRK2 into the adult rat brain, they saw the same stunting of growth of dopamine-...

Too mellow for our predatory world

...ts their ability to successfully escape from newly introduced predators (Proceedings of the Royal Society, FirstCite Early Online Publishing December 2006). Who of us has not dreamt of living on an island" Apparently, island life has certain advantages. This is also true for the marine iguanas. For millions o...

Gene therapy for hereditary lung disease advances

...patients' blood that the higher doses successfully introduced the vector DNA. In one patient we saw evidence for a very brief period that some of the alpha-1 protein was being produced, but not at a high enough level to be beneficial." The findings appear online today (Nov. 21) in the journal Human Gene Ther...

Researchers find docking sites for glucocorticoid receptor and Hsp90

...ites, Darimont's team investigated 49,000 randomly introduced GR mutants and 11 specifically designed Hsp90 mutants for their binding and activation abilities. Finding and confirming the two binding sites were boosted by the recently published crystallized structures of both Hsp90 and GR, Darimont said. "Our...

Professors to develop hand-held pathogen testing device

...ganisms present in the sample. The DNA can then be introduced into the device where it will undergo polymerase chain reaction for the selected harmful pathogens. Polymerase chain reaction is a process that takes a small amount of DNA and makes billions of copies so the pathogens can be easily detected, Hashsham...

How ants find their way

...he predicted place when a patterned background was introduced as a retrieval cue. Professor Collett said: "To know which cylinder was which ants needed the patterned background to be in a different position on the retina when they faced one or other cylinder. Accurate memory retrieval often relies on ants stori...

Pressured by predators, lizards see rapid shift in natural selection

...n minuscule islands, or cays, in the Bahamas. They introduced to six of these cays a larger, predatory lizard (Leiocephalus carinatus) commonly found on nearby islands and known as a natural colonizer of small cays. The scientists kept six other control cays predator-free and exhaustively counted, marked, and m...

Faster, more accurate tuberculosis test developed

... Lowenstein-Jensen culture. The researchers also introduced isoniazid, rifampin, ethambutol and streptomycin--TB antibiotics--to the cultures in order to detect drug-resistant TB. Compared to standard culture reference methods, drug-resistant susceptibility agreement for MODS was 100 percent for rifampin, 97 ...

Nanoparticle assembly enters the fast lane

...mbly process. In the Brookhaven study, researchers introduced partially rigid, double-stranded DNA, which forces interacting linker segments of DNA to extend away from the gold surface, allowing for more efficient assembly. "By using properties of DNA, we can increase assembly kinetics, or speed, by relati...

Developing uses for sugar-cane bagasse: Biotechnology applied to the paper industry

...l. Moreover, it appeared that little or no ethanol introduced was consumed by the fungus which preferentially uses other sources of carbon, resulting from the bagasse (saccharose) or put in with the substrate (maltose, yeast extracts and so on). It can therefore be recycled in the system or eliminated in a seco...

Virus may control Australia's

...ting Koi herpesvirus as a means of controlling the introduced fish. Project leader Dr Mark Crane says the viru...e been termed the 'rabbit of the river'."Carp were introduced into Australia in the early 1900s as a food and sporting fish. During extensive flooding in the 1970...

Fast-freeze snapshot yields new picture of nerve-muscle junction

... Paris. Richmond's graduate student Elena Gracheva introduced the technique at UIC. "It's a new technique that allows us to take a snapshot of what's going on at the neuromuscular junction and actually physically view the consequences of losing these proteins," said Richmond. The conventional technique is to ...

Selecting life: Scientists find new way to search for origin of life

...cientists suspect that organic material was likely introduced to Earth from many complementary sources. Abundant biomolecules form in molecular clouds in deep space, and these extraterrestrial compounds must have rained down on the early Earth. Other molecular synthesis was driven by lightning and ultraviolet r...

Rearing an army to save wheat

... enclosed wheat with wheat stem sawflies, and then introduced the parasitic wasps. His research explored whether supplemental food provided as nectar from flowering plants or as honey water increases the number of parasitic wasps produced in each cage. Another part of his thesis project examined whether using s...

New technique boosts size of proteins that can be analyzed

...s of five to 20 amino acids. These pieces are then introduced into the mass spectrometer where researchers can match masses of those pieces to known sequences and identify the proteins. However, this approach reveals less information concerning modifications to proteins. Such important cellular processes as o...

Transplanted photoreceptor precursor cells restore visual function in mice with retinal degeneration

...based on a novel technology in which the cells are introduced at a particular stage in their development. It was...hey would develop into photoreceptors, researchers introduced cells at a somewhat later stage. These cells are referred to as "precursors": they are immature cell...

New findings could lead to vaccine for severe malaria

... placenta is formed, however, a new environment is introduced with a different set of receptors. This means that a new growth niche is made available to a subpopulation of the parasites. Earlier studies have suggested that each protein from the parasite attaches to only one specific protein, a receptor, in the...

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