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Tag: "changing" at biology news

Growth in the sea comes down to a struggle for iron

... waters is a wise tool in any attempts to manage a changing climate. ...

Drug That 'Tags' Decision-making Areas Of The Brain May Aid

... membrane proteins,called nicotinic receptors, and changing the electrical properties ofthe cell. The human brain coordinates billions of neurons to mediatecomplex behaviors such as an infant learning to recognize his or herparents, a senior citizen learning to play piano, or the process ofaddiction following...

Gene therapy converts dead bone graft to new, living tissue

... "It's at that point that the body actually begins changing the dead, foreign bone splint, into the body's own, whole, living bone." Such a transformation can occur because mammals use their skeletons for both support and as a kind of "calcium bank." If calcium, which is necessary for such important function...

Molecular machine may lead to new drugs to combat human diseases

.... Normal genes then can take over without actually changing the genetic code. The results of the Purdue study are published in the January issue of the journal Nature Structural and Molecular Biology. "In terms of human health, Group I introns are interesting because they cause their own removal and also s...

Scientists rid stem cell culture of key animal cells

...three days. Xu started by evaluating the effect of changing stem cell growth conditions - using less feeder cell material, or no serum replacement, for instance. Unexpectedly, Xu found that the presence of serum replacement promoted stem cell differentiation. Digging deeper, he found that serum replacement m...

Essential mangrove forest threatened by cryptic ecological degradation

...porary mangrove assemblages in southern Sri Lanka, changing water runoff patterns, and archival material from the Dutch East-India company, the researchers show that over the past few decades contemporary irrigation projects have abused the long-standing Sri Lankan tradition of freshwater management that once...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

...thing' proposition, we were able to understand how changing different amounts of clathrin changed the 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 r...

Critical role in programmed cell death identified

.... Mitochondria are dynamic structures, constantly changing shape, budding and fusing. In cells instructed to die, the mitochondria tend to become smaller or fragment, but whether this fragmentation is a requirement for cell death or a byproduct has been unclear, until now. Conradt and her colleagues determi...

Highly adaptable genome in gut bacterium key to intestinal health

...ly allows the bacterial species to survive rapidly changing nutrient conditions but also helps maintain the fu...digest the host-produced mucus carbohydrates. "By changing its digestive enzymes and surface proteins, the bacterium changed its dining room seating from food ...

Researchers trace evolution to relatively simple genetic changes

...evolution can occur quickly, with just a few genes changing slightly, allowing newcomers to adapt and populate...and say it's an obvious candidate for dramatically changing skeletal structures in wild animals that end up completely viable and healthy,' he said. "Eda gene m...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...evolution can occur quickly, with just a few genes changing slightly, allowing newcomers to adapt and populate...and say it's an obvious candidate for dramatically changing skeletal structures in wild animals that end up completely viable and healthy,' he said. "Eda gene m...

Scientists discover unique microbe in California's largest lake

... Evolutionary Biology. She has played a key rolein changing the scientific world's understanding of how ocean food websare based on much smaller organisms than previously believed.Wood is an adjunct scientist at the Bigelow Laboratory for OceanSciences and the Harbor Branch Oceanographic Institution. In 2004,...

Ice core 'dipstick' indicates West Antarctic ice has thinned less than believed

...ince, which is key to understanding how climate is changing today, Waddington said. "To make climate judgments based on the past requires knowing the past climate accurately," he said. ...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...maintenance or enhancement of these stores under a changing climate will in turn potentially affect future cli...ch as altering the flood pulse by building dams or changing water quality by increasing the sediment load in rivers." "As economic development proceeded rapidl...

Rats infected as newborns grew up vulnerable to memory problems during an immune challenge

...at neonatal infection can create later problems by changing how well the body can respond to future immune challenges. Those changes affect how well memories are stored. The early alterationS may be to the basic architecture of glial cells called astrocytes within the hippocampus, which in turn help the centr...

Potential treatments for neurofibromatosis

...s are stable, while malignant cells are constantly changing due to the genetic instability common to tumors. By using drugs that target the mast cells' ability to promote blood vessel growth, Clapp and his colleagues hope to prevent tumors from getting larger. Eventually, with continuing treatment, they hope...

How the environment could be damaging men's reproductive health

...on, suggest that environmental pollutants could be changing the ratio of sperm carrying the X or Y (sex determ...ed testes) in Lithuania could be occurring because changing environmental factors are affecting the reproductive development of male foetuses. Babies born with...

New online portal merges vast data on Gulf of Maine ecosystem

...of the Gulf, and how abundance and distribution is changing over time. And the data can be mined and combined to examine more complex relationships, such as the way the abundance of one species may vary with another, or how species may be affected by variations in temperature and currents. To illustrate, one...

Controlling protein diversity

...n information from a gene is left out or included, changing the format of the resulting protein. In other words, if the information in a gene is like the elements of a computer code, leaving out some of the code results in a very different program than what would have resulted if all the components had been ...

Stem cells from brain transformed to produce insulin at Stanford

...eurons, islet cells respond to external signals by changing their electrical properties and releasing packages of proteins. In the case of islets, that protein is insulin. What's more, some neurons in mice and humans take the first steps toward producing insulin. In insects such as fruit flies, the cells tha...

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