Brightsurf Science News & Current Events

March 07, 2001
Calcium signals found to guide nerve cell development
Biologists at the University of California, San Diego have discovered that growing nerve cells in the developing embryo are guided to their proper targets by bursts of intracellular calcium that probe what's ahead and send back information to the cells in a kind of biological Morse code.

'Promiscuous prion' yields clues to infection across species barrier
Working with yeast, HHMI researchers have discovered a possible mechanism by which infectious prion proteins can hop the species barrier.

A new class of nanostructure: semiconducting 'nanobelts' offer potential for nanosensors and nanoelectronics
Researchers at the Georgia Institute of Technology have created a new class of nanometer-scale structure that could be the basis for inexpensive ultra-small sensors, flat-panel display components and other electronic nanodevices.

Second bacterium confirmed as cause of tooth decay, shows different pattern of virulence than S. mutans
Investigators at the University at Buffalo and the University of Connecticut have confirmed that a second bacterium, Streptococcus gordonii, induces tooth decay in an animal model, but that it is less virulent than Streptococcus mutans, a previously known cavity-inducing organism.

Museum dinosaur labs draw international researchers
Dinosaur researchers from all over the world use the 3-D Imaging Lab and Histology Lab at the Museum of the Rockies at Montana State University-Bozeman.

NIAAA launches COMBINE clinical trial
The National Institute on Alcohol Abuse and Alcoholism (NIAAA) today announces the start of Combining Medications and Behavioral Interventions (COMBINE), a nationwide study that targets persons with the diagnosis alcohol dependence, commonly known as alcoholism.

Violence and aggression: University of New Orleans researchers offer provocative insights
Violence and aggression. University of New Orleans researchers offer provocative insights into violence and aggression of children, adolescents and adults.

New multiprotein AIDS vaccine prevents disease in monkeys
Researchers at Yerkes Regional Primate Research Center at Emory University and the Emory Vaccine Research Center have developed a multiprotein AIDS vaccine that has prevented the development of AIDS in monkeys infected with a highly virulent HIV analogue seven months after vaccination.

University of New Orleans archaeologist unearths relics in oldest African American neighborhood
What do you think of when you hear the word archaeology?

PTSD patients damage teeth through involuntary grinding, clenching, UB study finds
As if persons with posttraumatic stress disorder (PTSD) didn't have enough to worry about, research now shows their stress-related symptoms could be damaging their teeth.

A nasty disease and a spunky kid: donation from Cody Unser sparks national network of transverse myelitis centers
A Johns Hopkins neurologist, inspired by the plight of a young patient, has established a nationwide consortium of Centers of Excellence for research and treatment of the often-paralytic neurological disease transverse myelitis (TM).

Do old glaciers cause new earthquakes in New Madrid, Missouri?
The ghost of past glaciers may still rattle the American Midwest.

UCSF HIV/AIDS expert and international women's health leader insist HIV/AIDS prevention efforts address gender inequity
A international call to action asserting that HIV/AIDS prevention programs must include economic and educational initiatives for women is being issued by Nancy Padian, PhD, director of International Programs at UCSF's AIDS Research Institute and Geeta Rao Gupta, PhD, President of the International Center for Research on Women.

Antarctic sea urchin shows amazing energy-efficiency in nature's deep freeze
Scientists at the University of Delaware and the University of Southern California have discovered an important reason why the Antarctic sea urchin can function so well in the polar seas.

Researchers identify 170 genes involved in Crohn's disease and ulcerative colitis
Researchers have developed the first genetic profile for Crohn's disease and ulcerative colitis, two types of inflammatory bowel diseases (IBD).

Isle Royale wolves fewer, but thriving
There are fewer wolves on Isle Royale National Park this year than last, but those that remain are experiencing the best of times.

Gene-trapping method powers discovery of new brain-wiring signals
HHMI researchers have developed a powerful screening method to identify genes that produce proteins that guide the wiring of the trillions of connections in the mammalian brain.

Depression seems to hinder regulation of heart rate after heart attack
Investigators at Washington University School of Medicine in St. Louis have found that depression appears to interfere with the heart's ability to speed up or slow down in response to stress or exertion.

The Frozen Zoo: the University of New Orleans and the new world of saving endangered species
University of New Orleans scientists are working on several programs aimed at preserving genetic diversity, increasing endangered animal populations, and saving animals on the brink of extinction--by stockpiling the genetic material (eggs, embryos, and sperm).

Researchers find new clues to nerve cell development
Similar to an insect's antennae, filopodia are finger-like projections on the tips of developing nerve cells that extend out to detect environmental clues and help direct axons to their proper destinations.

New prime-boost HIV vaccine strategy shows promise in monkeys
A promising new

Mayo Clinic study supports move to mercury-free blood pressure checks
Hospitals concerned about possible environmental hazards of mercury can switch to mercury-free devices for monitoring blood pressure without sacrificing accuracy, according to a Mayo Clinic study published in the March issue of the Archives of Internal Medicine.

University of Pennsylvania study finds evidence of telephone-based discrimination in housing rentals
Voice mail has become a way for some housing rental agents to discriminate on the basis of race, class and gender. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to