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Tag: "change" at biology news

New comparative toxicogenomics database

...ne their shape. It also can show how thatshape can change when the protein interacts with another molecule.“This work required that we develop new NMR methods in order todetermine the shape of this protein, which undergoes changes as itinteracts with pIgR,?said Rensheng Luo, Ph.D., a post-doctoral fellowin ...

UCSD researchers maintain stem cells without contaminated animal feeder layers

...for several weeks under these conditions showed no change in cell form and structure. The team then eliminated each factor and pluripotency was assessed. At first, the results were narrowed to three molecules, with activin A, a protein that participates in cellular growth and differentiation, as well as hor...

Scientists develop new color-coded test for protein folding

...ydrochloric acid were added, the solution began to change color, turning purple when the pH reached 5.8 and ...her--a process that caused the solution to quickly change from red to blue as the acidity increased. The researchers were surprised to discover that, when th...

Open microfluidic and nanofluidic systems

... nanometer scale. These devices will significantly change the way in which research is performed in the life sciences since they offer the ability to work with much smaller reagent volumes, much shorter reaction times, and the possibility of massive parallel processing. In general, this should lead to incre...

Highly adaptable genome in gut bacterium key to intestinal health

...t of." The dietary switch also caused B. theta to change the activity of genes that code for components of its outer surface cell capsule. This change in the face of this friendly, or symbiotic, species may be an important mechanism to avoid causing a...

Same mutation aided evolution in many fish species, Stanford study finds

... times scientists have shown that the same genetic change is responsible for an evolutionary adaptation in d..." Instead, the group found the exact same genetic change in each of the 15 freshwater sticklebacks they studied, including one local species the group collec...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

...to keep a good quality of life. It would be a huge change in the way treatment is done,?said Mandel, a neuroscientist in UF's College of Medicine. “We know the GDNF protects the neurons in primates from the model that we use, so that's good. We now know we can use very low doses that are still effective, so...

Researchers trace evolution to relatively simple genetic changes

...own the genetic mechanism that controls a dramatic change in skeletal pattern, a change that occurs naturally in the wild," he noted. "And it turns out that the mechanisms are surprisingl...

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

...own the genetic mechanism that controls a dramatic change in skeletal pattern, a change that occurs naturally in the wild," he noted. "And it turns out that the mechanisms are surprisingl...

Alcohol's effects on gene expression in the central nervous system

...de said that researchers now know that alcohol can change gene expression in the brain, and that these changes are likely responsible for many of the 'symptoms' of addiction, such as tolerance, physical dependence, and craving, as well as the 'consequences' of alcoholism, such as brain damage. "The challen...

Research Gives Hope For Liver Damage

...ve ofimmune cells, produced only a few days later, change function to breakdown and reabsorb the scarring. These findings, published in theJanuary edition of Journal of Clinical Investigation, will help doctorsto understand the mechanisms by which the liver is damaged and repairedand may lead to future trea...

Estrogen-like Component of Plastic Stimulates Growth of Certain Prostate Cancer Cells

...monstrates that the actual dose of BPA exposuremay change the biological response,?Dr. Knudsen said.The safety of BPA has been under intense debate for several years, withsome arguing that exposure to the chemical among humans is safe, withothers contending that it may promote the growth of human tumor cell...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

...ted with stem cells, and how these optical signals change as they differentiate into nerve, muscle, and other tissues. "At present, there's no rapid method for identifying the transitional states [of a stem cell] with the functional cell type it eventually becomes. That process is a mysterious sequence of m...

Bird Brains Show How Trial and Error May Contribute to Learning

...f electricity would show up a few notes later as a change in volume or pitch at a particular time in the song. The variations are usually too subtle for human ears, Kao said, but sensitive recording equipment can detect them. The systematic trials were possible with the aid of a computer program that could...

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

...s are compromised by the global problem of climate change while local pollution, habitat destruction and nar...on to other land uses." "Moreover, global climate change poses great environmental threats to wetlands," according to the analysis, "fundamentally altering t...

Falling ants glide back to trunk to avoid dangers of forest floor

...in ?usually with success. What allows the ants to change direction so quickly is still a mystery. They have long, slightly flattened hind legs which, when combined with abdominal movements, might allow the ants to reorient in midair. They also have an unusual flattened head with flanges that could act as a...

Affymetrix and the Karolinska Institutet Announce Translational Medicine Strategic Alliance

...looking statements contained herein to reflect any change in Affymetrix' expectations with regard thereto or any change in events, conditions, or circumstances on which any such statements are based. ...

World's largest rainforest drying experiment completes first phase

...his finding has important implications for climate change since the amount of carbon removed from the atmosp...e carbon emissions -- and could accelerate climate change processes already in place. But beyond these global effects, drought and fire, which is a tool of ch...

Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals

...ar biology tools we can now enable living cells to change their MRI contrast via genetic instructions." "The new imaging method is a platform technology that can be adapted for many tissue types and for a range of preclinical uses in conjunction with emerging molecular therapeutic strategies," Ahrens said....

Gene therapy for Parkinson's disease moves forward in animals

...to keep a good quality of life. It would be a huge change in the way treatment is done," said Mandel, a neuroscientist in UF's College of Medicine. "We know the GDNF protects the neurons in primates from the model that we use, so that's good. We now know we can use very low doses that are still effective, s...

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