ScienceDaily: Top News

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• Brain glia cells increase their DNA content to preserve vital blood-brain barrier
• Energy within the cell: Energy-saving chaperon Hsp90
• Dark side of the moon revealed: Lunar Reconnaissance Orbiter's LAMP reveals lunar surface features
• Most recent European great ape discovered
• Tiny transmitter sets frequency record: Revolutionary terahertz transmitter developed
• Charges going astray: New transfer paths for electrons discovered
• Cancer sequencing project identifies potential approaches to combat aggressive leukemia
• Gene identified as a new target for treatment of aggressive childhood eye tumor
• Give support to repulsion, and you'll see attraction. We know why
• Concept of 'overactive bladder' serves commercial interests rather than patient interests, experts say
• Opioids erase memory traces of pain
• Major environmental study finds traces of many drugs in Swedish waters

Brain glia cells increase their DNA content to preserve vital blood-brain barrier Posted: 13 Jan 2012 06:10 PM PST Scientists report that as the developing larval fruit fly brain grows by cell division, it instructs subperineurial glia (SPG) cells that form the blood-brain barrier to enlarge by creating multiple copies of their genomes in a process known as polyploidization.

Energy within the cell: Energy-saving chaperon Hsp90 Posted: 13 Jan 2012 06:06 PM PST A special group of proteins, the so-called chaperons, helps other proteins to obtain their correct conformation. Until now scientists supposed that hydrolyzing ATP provides the energy for the large conformational changes of chaperon Hsp90. Now a research team has demonstrated that Hsp90 utilizes thermal fluctuations as the driving force for its conformational changes.

Dark side of the moon revealed: Lunar Reconnaissance Orbiter's LAMP reveals lunar surface features Posted: 13 Jan 2012 06:06 PM PST New maps produced by the Lyman Alpha Mapping Project aboard NASA's Lunar Reconnaissance Orbiter reveal features at the moon's northern and southern poles in regions that lie in perpetual darkness. LAMP uses a novel method to peer into these so-called permanently shadowed regions, making visible the invisible.

Most recent European great ape discovered Posted: 13 Jan 2012 06:03 PM PST Based on a hominid molar, scientists from Germany, Bulgaria and France have documented that great apes survived in Europe in savannah-like landscapes until seven million years ago.

Tiny transmitter sets frequency record: Revolutionary terahertz transmitter developed Posted: 13 Jan 2012 06:02 PM PST A terahertz transmitter has generated the highest frequency ever attained by a microelectronic device. The innovative device is also minuscule and operates at room temperature, which could lead to it paving the way for new applications in, e.g., nondestructive testing or medical diagnostics.

Charges going astray: New transfer paths for electrons discovered Posted: 13 Jan 2012 05:59 PM PST In the development of materials for energy production and distribution, knowledge of molecular processes in electrical charge transfer is fundamental. Scientists have once more discovered that nature provides interesting templates for long-range electron transfer.

Cancer sequencing project identifies potential approaches to combat aggressive leukemia Posted: 13 Jan 2012 05:56 PM PST Researchers have discovered that a subtype of leukemia characterized by a poor prognosis is fueled by mutations in pathways distinctly different from a seemingly similar leukemia associated with a much better outcome. The findings highlight a possible new strategy for treating patients with this more aggressive cancer.

Gene identified as a new target for treatment of aggressive childhood eye tumor Posted: 13 Jan 2012 05:54 PM PST New findings help solve mystery of retinoblastoma's rapid growth in work that also yields a new treatment target and possible therapy.

Give support to repulsion, and you'll see attraction. We know why Posted: 13 Jan 2012 05:54 PM PST When two objects repel each other under the action of one force, we usually expect that addition of another force, also repulsive one, will accelerate separation. This intuitive view is, however, not always true. Researchers have now managed to explain surprising results of experiments with mixtures, where two repulsive interactions have lead to a strong attraction.

Concept of 'overactive bladder' serves commercial interests rather than patient interests, experts say Posted: 13 Jan 2012 05:54 PM PST Experts question the concept of the 'overactive bladder syndrome'. According to researchers, the definition of this syndrome is mostly beneficial to those with commercial interests, while from the patient perspective and for the development of treatments, it may be detrimental.

Opioids erase memory traces of pain Posted: 13 Jan 2012 05:49 PM PST Medical researchers have discovered a previously unknown effect of opioids. The study shows that opioids not only temporarily relieve pain, but at the right dose can also erase memory traces of pain in the spinal cord and therefore eliminate a key cause of chronic pain.

Major environmental study finds traces of many drugs in Swedish waters Posted: 13 Jan 2012 05:49 PM PST High levels of the anti-inflammatory substance diclofenac are released from wastewater plants, according to a new study.

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