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Tag: "growth" at biology news

Breakthrough method in nanoparticle synthesis paves the way for new pharmaceutical and biomedical applications

...us structure, while the other is used to limit the growth of the particles to nanometer dimensions. This method can be used to create a variety of nanoparticles with enormous surface areas, and very well-defined pore size and structure. One important application of these nanoporous nanoparticles lies in t...

TEL2 gene cooperates with MYC gene to provoke B-cell lymphomas

...codes for. The gene TEL1, which works to slow cell growth and multiplication, is another member of the ETS family and is a known target of mutations in human leukemia. Grosveld's group previously identified TEL2 and noted its similarity to TEL1, which prompted them to investigate whether TEL2 also played a ...

World's largest rainforest drying experiment completes first phase

...logged with water vapor bubbles, restricting their growth for years to come? These are just some of the questions that will be explored during the final two years of this experiment. Collaborating organizations in this effort include IPAM (Instituto de Pesquisa Ambiental da Amazonia), EMBRAPA (Empresa Bras...

VCU Researchers Identify Networks Of Genes Responding To Alcohol In The Brain

... found to be regulated by alcohol involved a nerve growth factor called Bdnf. Bdnf is found in the brain and is a vital part of nervous system development. "We found that the interaction between the Bdnf gene and several other genes that interact with Bdnf were all regulated in one region of the brain that...

Rush Physicians Using Gene Therapy For Heart Patients With Moderate To Severe Chest Pains Who Do Not Benefit From Other Treatments

... clinical research study uses vascular endothelial growth factor-2 (VEGF-2) in the form of a solution contai...GF-2 expresses itself which in turn stimulates the growth of new blood vessels by promoting the proliferation of endothelial cells in the heart. New blood ve...

How an AIDS-Related Cancer Unleashes Inflammation

... Kaposi's sarcoma (KS) indicated that the abnormal growth of infected cells required the overproduction of cytokines ?immune system proteins that trigger the cell's inflammatory response. A central question, he said, has been how does the Kaposi's sarcoma-associated herpesvirus that causes KS initiate cytok...

Artifical cornea lets woman blind 20 years see

...ough in some cases it is -- but rather progressive growth of blood vessels and scar tissue throughout an implanted natural cornea, according to researchers. The new cornea eventually becomes as opaque as the original. "The cornea is usually just like a clear window in the eye for people to see through, but...

Potential treatments for neurofibromatosis

...the tumors. The mast cells create chemicals called growth factors that enable the creation of blood vessels. The IU investigators now are identifying drugs that can disrupt the function of mast cells and their proteins in ways that they believe will starve the tumors. "It's much easier to develop targets ...

Cricket's finicky mating behavior boosts biodiversity

...vidual choices in the evolution of species and the growth of biodiversity. "Animals with nervous systems and brains have preferences and can make choices," says Tamra Mendelson, an evolutionary biologist at Lehigh. "Changes in these preferences and choices appear to drive speciation. "That raises the ques...

Programmable cells: Engineer turns bacteria into living computers

...lls to the locations where they are needed for the growth of new nerve or bone cells in a process Weiss called "programmed tissue engineering." Even the early step of creating patterns in a Petri dish, however, may be useful as a tool for other scientists, particularly developmental biologists who are tryi...

UCLA launches $20 million stem cell institute to investigate HIV, cancer and neurological disorders

...gator. "If we can learn how they are regulated for growth and development, we can harness this knowledge to ...ecialized laboratory that is critical for the safe growth and manipulation of stem cell lines. Compliance officers oversee all research in the GMP suite, whic...

Live fast, die young true for forests too

...roductive forests -- forests that add the most new growth each year -- also tend to die young, according to a U.S. Geological Survey (USGS) study published in a recent issue of the journal Ecology Letters. This discovery could help scientists predict how forests will respond to ongoing and future environmen...

Researchers discover molecular mechanism that desensitizes us to cold

...ved." Many signals, such as neurotransmitters and growth factors are known to catalyze the breakdown of PIP2. Now that researchers know how PIP2 interacts with this large class of membrane proteins, they can begin to look out how these signals work and what effects they are having in various areas of the b...

Researchers devise way to mass-produce embryonic stem cells

...w mouse embryonic stem cells in a bioreactor. Cell growth increased 193-fold in 15 days. At the end of that period, cell density ?the number of cells that had grown in the bioreactor ?was anywhere from 10- to 100-fold higher than the number of stem cells produced by conventional laboratory methods. That's s...

Epstein-Barr virus protein crucial to its role in blood cancers

... currently underway. Initial studies show that the growth of EBV-associated cancer cells can be inhibited in tissue-culture assays. The investigators are actively pursuing this line of investigation for developing potential therapies. ...

Defensins neutralize anthrax toxin

... currently underway. Initial studies show that the growth of EBV-associated cancer cells can be inhibited in tissue-culture assays. The investigators are actively pursuing this line of investigation for developing potential therapies. ...

Great White shark evolution debate involves WSU Lake Campus geology professor

...reat White and mako sharks have very similar tooth growth trajectories, while those of the great white and megladon are not similar. Analysis of both the root and entire tooth also shows a remarkable similarity in all four tooth positions under study for both the Great White and mako shark. Serration densit...

PGA on a tour under the skin

...er called poly-gamma-glutamate (PGA) to facilitate growth and ensure survival of the bacteria inside the human host. PGA protects the pathogen from innate host defenses during infection. S. epidermidis is the only human pathogen known to produce PGA other than Bacillus anthracis, but several differences exi...

NIH Calls on Scientists to Speed Public Release of Research Publications

...information is on a steady rise. "With the rapid growth in the public's use of the Internet, NIH must take a leadership role in making available to the public the research that we support," said NIH Director Elias A. Zerhouni, M.D. "While this new policy is voluntary, we are strongly encouraging all NIH-s...

No relief for Pacific Northwest drought

...in that region, at least for this year. Vegetation growth that occurs during years with heavier rains, however, can sometimes set the stage for major fires in following years if drought resumes. The models that simulate the droughts and the likelihood of fire are complex and sometimes counter-intuitive, th...

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