Brightsurf Science News & Current Events

August 01, 2010
'Guardian of the genome': Protein helps prevent damaged DNA in yeast
Like a scout that runs ahead to spot signs of damage or danger, a protein in yeast safeguards the yeast cells' genome during replication -- a process vulnerable to errors when DNA is copied -- according to new Cornell research.

Mechanical regulation of cell substrates effects stem cell development, adhesion
Bioengineers at the University of Pennsylvania have created a system to control the flexibility of the substrate surfaces on which cells are grown without changing the surface properties, providing a technique for more controlled lab experiments on cellular mechanobiology, an important step in the scientific effort to understand how cells sense and respond to mechanical forces in their environment.

Epileptic seizures may be linked to an ancient gene family
New research points to a genetic route to understanding and treating epilepsy.

Breeding changing dog brains
For the first time, scientists have shown that selective breeding of domestic dogs is not only dramatically changing the way the animals look but is also driving major changes in the canine brain.

Purple light means go, ultraviolet light means stop
A new membrane developed at the University of Rochester's Laboratory for Laser Energetics blocks gas from flowing through it when one color of light is shined on its surface, and permits gas to flow through when another color of light is used.

UCSD scientists find gas pedal -- and brake -- for uncontrolled cell growth
Researchers at the University of California, San Diego, School of Medicine have identified a new way to regulate the uncontrolled growth of blood vessels, a major problem in a broad range of diseases and conditions.

Negative effects of sleep restriction may linger after 1 night of recovery sleep
Neurobehavioral impairments such as delayed reaction times accumulated across a period of five days when sleep was restricted to less than four hours per night.

SIDS surprise: Study finds that infant boys are more easily aroused from sleep than girls
At 2 to 4 weeks of age, the mean strength of a pulsatile air-jet stimulus that was required to induce arousal during quiet sleep was significantly lower in male infants than female infants.

Short and long sleep durations are independent risk factors for cardiovascular disease
The risk of any cardiovascular disease for adults who reported sleeping five hours per day or less was more than two times higher than that of people who reported a daily sleep duration of seven hours (adjusted odds ratio = 2.20).

15,000 beams of light
One Chicago skyline is dazzling enough. Now imagine 15,000 of them.

Nutritional labeling and point-of-purchase signs influence healthy food choices
Obesity is poised to overtake tobacco use as the leading cause of preventable death in the United States.

New insights into how stem cells determine what tissue to become
Within 24 hours of culturing adult human stem cells on a new type of matrix, University of Michigan researchers were able to make predictions about how the cells would differentiate, or what type of tissue they would become.

Ben-Gurion University of the Negev researcher awarded grant from the Leukemia and Lymphoma Society
Ben-Gurion University of the Negev Professor Varda Shoshan-Barmatz has been awarded a three-year, $600,000 grant from the US Leukemia & Lymphoma Society to develop target-specific, anti-cancer drugs.

Mining bacterial genomes reveals valuable 'hidden' drugs
A new tool to excavate bacterial genomes that potentially hide a rich array of pharmaceutical treasures has led to the discovery of a novel antibiotic.
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