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Tag: "growth" at biology news

Cerebral navigation: How do nerve fibers know what direction to grow in?

...rtant insights into how inhibitory cues affect the growth cone, and identify possible targets within axons t...which binds to a receptor called Eph on the axon's growth cone. But how this triggers the axon to change course or stop growing has been a mystery. "Very lit...

Brain-injury rehabilitation depends on acetylcholine circuitry

...acetylcholine or those that encourage brain wiring growth "may enhance cortical plasticity and improve functional recovery following nervous system injury." The researchers also noted that brain circuitry that depends on other types of neurotransmitters such as noradrenalin, dopamine, or serotonin have als...

New tumor-suppressor gene discovered

... discovery extends our understanding of how tissue growth is controlled both during normal development and d...als and plants may regulate cell number and tissue growth by restricting the proliferation of cells and promoting their timely death," Lai says. This is the ...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...form on earth as these compounds limit the overall growth rate. The researchers discovered this type of bacteria for the first time a few years ago in the oxygen poor Black Sea and now also in the open ocean. This discovery has major consequences for our understanding of the global nitrogen cycle. The Beng...

Researchers discover underwater volcano

...st at Woods Hole Oceanographic Institution. With a growth rate of at least eight inches per day, the volcani...uises," said Staudigel. Within decades, continued growth of Nafanua could bring the summit of this volcano from its current depth of 600 meters to a depth of...

Novel gene-silencing nanoparticles shown to inhibit Ewing's sarcoma

...NA to block the activity of genes that promote the growth of tumors. Harnessing the power of this new techno...ing the oncogene EWS-FLI1 which triggers the tumor growth characteristic for this cancer. In their experiment, siRNA was delivered to this growth-promoting r...

Researchers find promising cancer-fighting power of synthetic cell-signaling molecule

...anti-cancer compounds called Enigmols suppress the growth of human cell lines representing cancers of the pr..., the researchers found that Enigmols suppress the growth of human prostate tumors implanted in mice, which is a commonly used model to test new anti-cancer d...

Are rice and wheat behind China's population boom?

The rapid growth of the earliest cities in northern China starting as far back as 2400 to 2000 BC is the result of successful rice farming combined with other crops, says University of Toronto anthropologist Gary Crawford. Although we often associate rice with Chine...

At long last, scientists figure out how plants grow

.... Scientists have known since 1885 that the plant growth hormone auxin exists. They've known of its dramatic effects on plant growth and development since the 1930s. But only now do scientists know how it works. In this week's Natur...

What's really making you sick? Plant pathologists offer the science behind Sick Building Syndrome

... now have the technological ability to detect mold growth in its infancy to control it." Apart from mold, d...sts and mycologists to study building-related mold growth and development and SBS syndrome in real-world conditions. More on this topic will be presented dur...

New project aims to make large-scale lobster farms feasible

...o collect larvae from the wild. The lobster larval growth cycle is extremely complicated and as yet reproduction and growth to adulthood has not been accomplished in captivity in reliable numbers. Development of collection ...

Scientists discover that three overlapping signals in embryo help get the backbone right

...h group, has been used in cultures to maintain the growth of neural stem cells. The new UC Berkeley experiments, on frogs, show that some steps in early embryonic development are so critical that many overlapping signals are needed to ensure that cells go down the right path. The formation of the back and ...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...he surface, stimulating the rapid reproduction and growth of microscopic algae called phytoplankton. These algal blooms are natural events that benefit life in the gulf by generating tons of phytoplankton-a major source of food for larger organisms. But some phytoplankton species produce harmful blooms, kn...

Measuring Enzymes At End Of Cancer Pathway Predicts Outcome Of Tarceva, Taxol

...ng cancer cells have a mutation in their epidermal growth factor receptor (EGFR), but that does not predict response to the targeted therapy in other forms of cancer, Ueno says. "We find here that as long as CDK2 is suppressed, the drug works, so developing an accurate test for CDK2 activity would be a boo...

Bevacizumab Combined With Chemotherapy Improves Progression-Free Survival for Patients With Advanced Breast Cancer

...er therapy, an angiogenesis inhibitor prevents the growth of blood vessels from surrounding tissue to a soli...signed to bind to and inhibit vascular endothelial growth factor (VEGF). VEGF is a protein that plays a critical role in tumor angiogenesis. “It is noteworth...

Could microbes solve Russia's chemical weapons conundrum?

...dergo transformation by the microbial cells when a growth substrate (MEA/EG) is present. However as the cells did not grow in the presence of PHT alone, the authors conclude that the bacteria cannot use them for growth. The group hopes that the bacterial strain can be used in the context of plant-microbial...

MUHC researchers make cancer target breakthrough

... week, the researchers document a reduction in the growth of both colon and lung cancer tumors with inhibiti...s of methionine--a critical nutrient necessary for growth of cancer cells," explains Dr. Rima Rozen, principal investigator of the new study, and Deputy Scien...

Disease progression model of pancreatic cancer developed by Penn researchers

...a driving force in the transition from local tumor growth to metastases of cancers. According to Hingorani, ...cancer. Often, the expression of molecules such as growth factors and their receptors will offer possible targets for treatment. The researchers were surprise...

Man-made wetland's effectiveness similar to natural marsh

... accumulate in a body of water and cause excessive growth of algae and algal blooms. These blooms thrive on the nutrients and deplete the water of nearly all of its oxygen. Wetlands experts estimate that the American Midwest has lost about 80 percent of its wetlands in the last two centuries, compared to a...

Master gene controls healing of skin in fruit flies and mammals

...at very little is known how wound tissue stops its growth behavior when the wound is healed. In addition, cancer cells evade this "stop" program, but how they do it is not well understood. ...

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