factors 2 10

Tag: "factors" at biology news

MIT researcher presents new view of how the cortex forms

...," Sur and Rubenstein point out that transcription factors are key. A transcription factor is a protein that ... brain's early prenatal development, transcription factors control the birth and growth of new neurons, neurons' movement and connectivity within the brain, an...

How E. coli bacterium generates simplicity from complexity

...said Barrett. "Our simulations show that these two factors are key determinants of how the bacterium organizes itself." Barrett, Palsson, and their colleagues simulated the "functional states" of E. coli's metabolic and transcriptional regulatory networks in the 15,580 environments of food sources and elect...

UCLA discovery will aid in treatment of patients with a deadly brain cancer

...to these drugs. There had to be critical molecular factors that determined response, Mischel said. He and his team set out to find the molecular determinants that indicated which patients would respond best to EGFR blockers. Previous UCLA research in brain and other cancers suggested that the key might be t...

Research: Snails were overlooked contributors to marsh destruction

...rought's impacton what scientists call "bottom-up" factors such as increased salinity. But, they say, decades of scientific tradition emphasizing only these types of influences resulted in overlooking "top down" ones ?in this case, top-down controls potentially spurred by climate change. "For ecology in gen...

OHSU discovery sheds light into how stem cells become brain cells

...supporting the neurons. We wanted to find out what factors cause this switch in differentiation. We also wanted to determine if the process can be controlled and used as a possible therapy. What amazed us is that it turns out a single gene may be responsible for this incredibly important task." The key gene...

Researchers discover new form of cancer gene regulation

...tion or repression through action of transcription factors in the nucleus of the cell. The altered gene expression profile then results in cellular differentiation, cellular proliferation or cellular death as pattern formation proceeds. An important signal transduction pathway critical to early developme...

In SAD patients, autumn antidepressants can prevent winter depression

... the fall and winter in northern latitudes-genetic factors likely play a role as well. As in the current study, many patients with SAD are not treated with antidepressant medications, despite having many previous episodes of seasonal depression. Starting antidepressant treatment in the fall offers a new op...

New research examines genetics of successful aging

...Zubenko. "Identifying such genetic and behavioral factors may hold promise for better understanding the aging process and perhaps one day enriching or extending the lives of other individuals." ...

Scientists crack code for motor neuron wiring

...ch involves members of the family of transcription factors encoded by the Hox genes -- could also govern the establishment of other spinal cord circuits. This circuitry includes interneurons that control motor neuron firing patterns and sensory neurons that transmit feedback information on muscle action. Th...

Forgotten by evolution?

...process they used was that they did not add growth factors to the culture medium; the goal was to prevent the cells from differentiating prematurely. By doing so, the scientists discovered that the two cell lines were different in the expression of typical stem cell markers. The researchers thus suspect that...

Targeted drug delivery achieved with nanoparticle-aptamer bioconjugates

... it is the cause of 85,000 deaths annually.2 Risk factors associated with prostate cancer include family history of the disease, age (predominantly men over 50 years of age) and a diet high in red meat and dairy products.3 Once the cancer has been diagnosed it is graded and staged to assess the aggressiven...

Researchers use 'trickery' to create immune response against melanoma

... it is the cause of 85,000 deaths annually.2 Risk factors associated with prostate cancer include family history of the disease, age (predominantly men over 50 years of age) and a diet high in red meat and dairy products.3 Once the cancer has been diagnosed it is graded and staged to assess the aggressiven...

Drunken elephants: The marula fruit myth

...cative of inebriation. "Assuming all other model factors are in favour of inebriation, the intoxication would minimally require that the elephant avoids drinking water, consumes a diet of only marula fruit at a rate of at least 400 percent normal maximum food intake, and with a mean alcohol content of at l...

Why the Amazon rainforest is so rich in species

...ter role in the evolution of species than external factors like prehistoric climate change. After conducting ...the scientists were able to conclude that external factors can only have had a limited impact on evolution. This study's remit was not to put forward new theo...

New maps reveal true extent of human footprint on Earth

... use around the world, including a look at related factors such as global crop yields and fertilizer use. Distilling that information into computer-generated maps, the scientists will present their early findings during the fall meeting (Dec. 5-9, 2005) of the American Geophysical Union. "In the act of maki...

Contagious obesity? Identifying the human adenoviruses that may make us fat

...sts, Whigham said. And yet, there is evidence that factors other than poor diet or lack of exercise may be at...history has spread so rapidly, and the etiological factors producing this epidemic have not been clearly identified." "It makes people feel more comfortable t...

Embryos tell story of Earth's earliest animals

...ilization of early animal embryos, as well as what factors are not likely to affect fossilization. They used two sea urchin species as models, Heliocidaris erythrogramma and Lytechinus pictus. "We wanted to find what conditions would allow a dead embryo to be preserved for about a month, enough time for it...

Study ties 'new' cell-death mechanism to developmental and degenerative brain disorders

... first time they have been identified as causative factors ?and potentially therapeutic targets ?in neurodegenerative diseases. "Very recent neurophysiological studies of bursting neurons have led to speculation that voltage-gated potassium channels could be involved in human neurodegenerative disease, but ...

HIV/AIDS rates in Tijuana, Mexico increasing at alarming rate

...rise in HIV infection may be linked to a number of factors including Tijuana's proximity to the United States... work to fill the perceived void ?all contributing factors that can lead to increased vulnerability to HIV infection. Although homosexual/bisexual men conti...

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

...h the highest risk. In an effort to identify risk factors with a genetic foundation, the researchers took the unconventional approach of starting from scratch and not looking at genes already known or suspected to be involved in heart rhythm. "Studying individual genes is not going to open new areas of re...

1 2 3 4 5 6 7 8 9 10