ScienceDaily Top Science Headlines
for Sunday, November 7, 2010
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Cosmic curiosity reveals ghostly glow of dead quasar (November 6, 2010) -- Astronomers have discovered that the strange-looking object discovered two years ago as part of the Galaxy Zoo citizen science project, called "Hanny's Voorwerp," is a large cloud of glowing gas illuminated by the light from a quasar that died out up to 70,000 years ago. ... > full story
'Nano-drug' hits brain-tumor target: Unique triggering device delivers antitumor drugs (November 6, 2010) -- Employing new drug-engineering technology that is part of an advanced science called nanomedicine, a research team has created a "nanobioconjugate" drug that may be given by intravenous injection and carried in the blood to target the brain tumor. It is engineered to specifically permeate the tumor cell wall, entering endosomes, mobile compartments within cells. ... > full story
PET scans reveal estrogen-producing hotspots in human brain (November 6, 2010) -- A new study demonstrated that a molecule "tagged" with a radioactive form of carbon can be used to image aromatase, an enzyme responsible for the production of estrogen, in the human brain. The research uncovered that the regions of the brain where aromatase is concentrated may be unique to humans. ... > full story
Math professor illuminates cellular basis of neural impulse transmission (November 6, 2010) -- A new mathematical model shows that the calcium current through an N-type channel is larger than calcium channels that are not involved in synaptic transmission, contrary to the currently accepted channel conductance hierarchy. ... > full story
'Prima donna' protein doesn't work well in pairs (November 6, 2010) -- Bioengineers have found that the workhorse proteins that move cargo inside living cells behave like prima donnas. These molecular-scale machines called kinesin are two-legged mechanical motor proteins. Using an especially sensitive set of tools, scientists measured the pulling power of kinesin both singly and in pairs. It seems that kinesins don't work well together -- in part because they are so effective on their own. ... > full story
Self awareness can help people navigate rocky seas of relationships (November 6, 2010) -- Knowing something about the way you communicate attraction says something about challenges you might have had in your past dating life, says a researcher. Hopefully, this awareness can help people avoid those mistakes and succeed in courtship. ... > full story
DNA fingerprinting traces global path of plague (November 6, 2010) -- Scientists have traced major plague pandemics such as the Black Death back to their roots using DNA fingerprinting analysis. ... > full story
Breakthrough in cancer vaccine research (November 6, 2010) -- Researchers hope to revolutionize cancer therapy after discovering one of the reasons why many previous attempts to harness the immune system to treat cancerous tumors have failed. ... > full story
Luminous cells from jellyfish could diagnose cancers deep within human body (November 6, 2010) -- Scientists have developed a process that uses the luminous cells from jellyfish to diagnose cancer tumors deep within the human body. The researchers have used an altered form of the green fluorescent protein (GFP) so that it shows up as red or blue, rather than its original green. Color is important in disease diagnosis, as most colors in the spectrum are rapidly absorbed, and tumors deep within the body become invisible. ... > full story
Illnesses, injuries greatly increase chances of older adults developing new or worsening disability (November 6, 2010) -- In a study examining the factors that play a role in an older adult's transition to disability, intervening illnesses and injuries that led to hospitalization or activity restriction were associated with worsening functional ability, especially among those who were physically frail. ... > full story
X-ray crystallography reveals structure of precursor to blood-clotting protein (November 6, 2010) -- Using state-of-the-art robotic and x-ray crystallographic equipment, researchers have revealed for the first time the molecular structure of the zymogen, or inactive, form of a blood-clotting enzyme. ... > full story
Compulsive eating and the holiday season can lead to serious weight gain (November 6, 2010) -- Dealing with extended family, increased commitments and even celebratory occasions can cause a compulsive overeater to gain too much weight during the holiday season. ... > full story
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