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Tag: "been" at biology news

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...le and obvious as “going gray,?yet scientists have been unableto explain the precise cause of this usually...re is a major risk factor in the disease, whichhas been increasing in the past several decades.Melanocytes, which manufacture and store the pigment that com...

Experiments provide proof of how traveling in groups protects insects

...r their sins. A more recent, scientific theory has been the "safety-in-numbers" idea -- that the small ani...issue of Nature, is unique since previously it has been too difficult to monitor what happened to specific insects among untold millions. "With these remar...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

...tumors. Technological breakthrough Bernstein has been studying chromosome wrappings for five years as a ... a major role. Until now, however, it had not even been known which regions of the genome carry such tags. A complete surprise Most regions of the chromat...

First 'atlas' of key brain genes could speed research on cancer, neurological diseases

...lls. Until now, braintranscription factors had not been systematically isolated and theirlocations within different parts of the brain pinned down.The map should tell scientists studying different parts of the brain,which transcription factor (TF) genes regulate the development of thatbrain region, and wh...

New research questions basic tenet of neuron function

...autism, depression and epilepsy, all of which have been linked to abnormal neurotransmitter function, said Dr. Kavalali. In neuronal cell cultures, the researchers labeled synaptic vesicles with a fluorescent dye and observed how and when the vesicles released neurotransmitters, both when the neurons wer...

Vital step in cellular migration described by UCSD medical researchers

... body's immune response to invading pathogens, has been demonstrated by researchers in the University of California, San Diego (UCSD) School of Medicine. Published in the March 27 online edition of Nature Cell Biology and the journal's upcoming April print edition, the study describes how a the interactio...

U-M scientists find genes that control growth of common skin cancer

...role in normal development,and its dysfunction has been implicated in a number of different humandiseases and neoplasms, including BCCs in skin and cancers arising inbrain, lung, prostate, pancreas and other gastrointestinal organs.Dlugosz and colleagues focused on the function of uncontrolled Hhpathway s...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

... speed of endocytosis." "This had literally never been done before, which is one of the reasons the journal editors are so excited about this study," he said. The new technology really paid off in terms of results, he added. "It turns out that clathrin regulates endocytosis in a manner we never suspect...

Experiments provide proof of how traveling in groups protects insects

...r their sins. A more recent, scientific theory has been the "safety-in-numbers" idea -- that the small ani...issue of Nature, is unique since previously it has been too difficult to monitor what happened to specific insects among untold millions. "With these remar...

New Study from Affymetrix Laboratories Points to Changing View of How Genome Works

...that were exclusively found in the nucleus had not been previously detected. Any single base in the genome...uman chromosomes. GeneChip tiling microarrays have been used by Gingeras and his collaborators, as well as the NHGRI publicly funded ENCODE project, to stud...

First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers

... College in New York City. The findings have just been published in Proceedings of the National Academy of Sciences. For decades, doctors have fought cancer by using surgery, chemotherapy, or radiation to excise or shrink the primary tumor. "However, in too many cases it's simply impossible to complete...

Critical role in programmed cell death identified

...ochondrial involvement in worms had not previously been shown. The new work, led by Dr. Barbara Conradt, ...is a requirement for cell death or a byproduct has been unclear, until now. Conradt and her colleagues determined that mitochondrial fragmentation is requi...

Study: Soap And Water Work Best In Ridding Hands Of Disease Viruses

...ed States," Rutala said. "Hand hygiene agents have been shown to reduce the incidence of health-care associated infections, and a variety of hand hygiene agents are now available with different active ingredients and application methods. "Our study showed that the anti-microbial hand washing agents were ...

Taking Aim With Nanoparticle PEBBLEs

...be the research that he and his collaborators have been doing over the past seven years, including encouraging preliminary results using PEBBLEs to treat a virulent form of brain cancer in rats. PEBBLEs are polymer spheres, typically 20 to 200 nanometers in diameter—about the size of a virus. The spheres...

ASU researchers finds novel chemistry at work to provide parrot's vibrant red colors

... so strikingly colorful," McGraw said. McGraw has been studying the colors of birds for seven years. He first became interested in the behavioral significance of bird colors as a form of visual communication within a species (e.g. to denote status or attractiveness). As he studied these aspects, he wante...

Genetically modified natural killer immune cells attack, kill leukemia cells

...s in adapting NK cells to the treatment of ALL had been significantly hampered because researchers were not able to grow large numbers of these immune cells in the laboratory, and because NK cells normally have only weak anti-leukemic activity. The key breakthroughs made by the St. Jude team were the dev...

UCSD researchers maintain stem cells without contaminated animal feeder layers

...in the absence of contaminated animal products has been demonstrated by University of California, San Dieg...arious growth factors and chemicals had previously been shown to modulate cellular growth and differentiation in human pancreatic cells. Human embryonic ste...

Transport System Smuggles Medicines Into Brain

... so strikingly colorful," McGraw said. McGraw has been studying the colors of birds for seven years. He first became interested in the behavioral significance of bird colors as a form of visual communication within a species (e.g. to denote status or attractiveness). As he studied these aspects, he wante...

Scientists develop new color-coded test for protein folding

...ur knowledge, however, gold nanoparticles have not been previously used to investigate the folding and unfolding of proteins." The initial batch of gold-cytochrome solution had a rosy red hue and a pH value of 10--about the same as an over-the-counter heartburn medication. But when drops of hydrochloric ...

Placenta Is A Rich Source Of Blood Stem Cells

... No role was suspected for the placenta, which has been seen as simply a place for nutrient exchange and w... is surprising that this role for the placenta has been overlooked for so many years.'' The study, published in the March issue of the journal Developmenta...

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