imaging 2 8

Tag: "imaging" at biology news

Blood flow in brain takes a twist, affecting views of Alzheimer's

...ptions underlying today's most sophisticated brain imaging techniques and could open a new frontier when it c...he basis for interpretation of sophisticated brain imaging techniques such as PET scans and functional MRI scans. Now the group led by Nedergaard, professor i...

Mice with glowing hearts shed light on how hearts develop

...eart beats approximately 6 to 10 times per second, imaging requires a special high-speed camera that is coole...e University of Pittsburgh contributed the optical imaging work. Using this technique, the researchers were able to track the embryo's developing heart to g...

Face perception is modulated by sexual orientation

...gnition is arguably the most developed. Past brain imaging studies have shown that the brain's cortical network for face perception includes regions in visual cortex that process the identification of individuals as well as social cues, such as gaze direction and speech-related movements; the amygdala and in...

Biologists visualize protein interaction that may initiate viral infection

...ocated on a host cell's surface. Using a powerful imaging tool called cryo-electron microscopy, the biologists took a picture of the virus attached to the CRD shortly after the two joined together. It is the first time scientists have visualized the virus and CRD binding. "We formed the virus-CRD complex, ...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...ins scanned using a powerful functional MRI (fMRI) imaging machine, while they were asked to respond to a series of 360 visual-based tests. Some of the tests carried a monetary reward between 25 cents and $2, while others carried penalties of the same size. Still others carried no reward or penalty. The par...

High-resolution light microscope reveals the fundamental mechanisms of nerve communication

...in diameter, is reduced in surface area within the imaging plane by roughly an order of magnitude using the S... the Science publication by Kittelet al. With STED imaging the scientists discovered that the bruchpilot protein is distributed in rings of ca. 150nm diameter,...

UCLA scientists uncover mechanism of response to targeted therapy

...r high levels of HIF, would take in a standard PET imaging probe at high levels. If that proved true, the PET scan would show that the cancer cells had increased levels of the probe. Using laboratory animals, researchers determined that kidney cancer cells were indeed better at taking up the probe, allowing ...

U of MN researchers develop way to visualize synchronized interactions of nerve cells in the brain

...f evaluation such as functional magnetic resonance imaging (fMRI) are too slow--they take seconds to detect activation. To better evaluate how the nerve networks in the brain communicate and interact with one another, researchers used magnetoencephalography (MEG) to record, with 1- millisecond temporal re...

Movement of chromosome in nucleus visualized

... and Urbana-Champaign campuses now offer the first imaging evidence from live cells of ongoing organization and transport within the cell nucleus. Genes that are active are located mainly in the central region of the nucleus, while inactive genes are at the periphery. But scientists have had no way to trac...

USC, Rice to develop bacteria-powered fuel cells

...ttge will contribute his experimental skills in an imaging technique called Vertical Scanning Interferometry. The technique, which he helped create in the 1990s, combines information from multiple beams of light to resolve sample features as small as one-billionth of a meter. In previous studies with Nealson...

Neuroscientists discover new cell type that may help brain maintain memories of smells

...thor on the study, took advantage of a new type of imaging method called multiphoton microscopy to overcome these hurdles and to discover that Blanes cells talk to granule cells. "The multiphoton microscope allowed me to identify the axon and then follow it for long distances without damaging the Blanes c...

Molecule by molecule, new assay shows real-time gene activity

...brane, sidestepping the longstanding difficulty of imaging single proteins zipping about in cell cytoplasm, w...ical Sciences, which funded the work in part. "His imaging methods open up new possibilities for addressing fundamental questions about the precise events and ...

Sea coral's trick helps scientists tag proteins

...tivatable fluorescent proteins (PAFPs), innovative imaging tools first made possible by Douglas Prasher, who isolated the gene for green fluorescent protein (GFP) from a species of bioluminescent jellyfish in 1992, and Martin Chalfie, who first used GFP for labeling in 1994, said Marc Zimmer, a computational...

Botox could help target resistant tumors for treatment

...tumors. In tests on perfusion, magnetic resonance imaging results (MRI) showed significantly greater perfusion in treated mice after three days. In addition, Botox "pre-treatment" led to significantly greater delays in tumor growth as well as stimulation of apoptosis (programmed cellular death) when compa...

How 'hot' emotional brain interferes with 'cool' processing

... memory tasks. Their functional magnetic resonance imaging (fMRI) images of human volunteers exposed to emoti...directs. That center aims at using genetics, brain imaging and neuropsychological and psychiatric techniques to understand PTSD and related disorders. ...

Formation of cellulose fibers tracked for the first time

...rotein from which microtubules are built. Using an imaging technique that can track the motion of single fluorescent molecules, the researchers found that cellulose synthase moves along "tracks" defined by the microtubules. When the microtubule tracks were disrupted with specific drugs, the cellulose synthas...

Researchers solve mystery of how nuclear pores duplicate before cell division

...nto the nuclear membrane. Using advanced real-time imaging tools the scientists watched as a nuclear membrane ?pores and all ?formed within an hour. "We were able to visualize single nuclear pore complexes," says graduate student and co-first author Daniel Anderson. "This allowed us not only to watch as si...

Aggression-related gene weakens brain's impulse control circuits

... and colleagues report on their magnetic resonance imaging (MRI) study online in the Proceedings of the National Academy of Sciences during the week of March 20, 2006. "These new findings illustrate the breathtaking power of 'imaging genomics' to study the brain's workings in a way that helps us to unders...

How taste response is hard-wired into the brain

...on of one or the other type. They used microscopic imaging through tiny windows in the fly brains to watch neuronal response when they exposed the flies to sweet or bitter chemicals They found that a whole range of sweet substances selectively switched-on the Gr5a neurons, while a range of bitter substances...

New hybrid virus provides targeted molecular imaging of cancer

...virus can target tumors systemically to deliver an imaging or therapeutic gene," says the co-leader of the st...or finding tumors and genetically marking them for imaging on a clinic-ready body scanner. The AAVP hybrid combines the ability of the bacterial virus to targ...

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