Brightsurf Science News & Current Events

July 05, 2001
Experiments indicate normal visual experience necessary for proper brain development
Duke University Medical Center researchers have developed evidence in animal experiments indicating that - while the brain's structures are prewired to enable development of the visual system - normal visual experience is required for complete maturation.

Benefits from Alzheimer's plaque-producing reaction? Science study proposes role in gene expression
The molecule that spawns

New study shows normal-looking clones may be abnormal
Scientists have found the first evidence to show that even seemingly normal-looking clones may harbor serious abnormalities affecting gene expression that may not manifest themselves as outward characteristics.

Doubt over appropriateness of conventional epidurals
Epidural techniques which use low-dose anaesthetics reduce the need for assisted vaginal delivery in childbirth, casting doubt over the future use of conventional epidurals, conclude authors of a study in this week's issue of THE LANCET.

Evidence that Alzheimer's protein switches on genes
HHMI researchers have found the first evidence that indicates a cellular function for the protein that produces the brain- clogging amyloid plaque deposits that cause Alzheimer's disease.

Nano-transistor switches with just one electron, may be ideal for molecular computers, Science study shows
A single electron makes the difference between

Science researchers report 'extremely unstable' gene expression in cloned mice
Extremely unstable gene expression in mice cloned from embryonic stem cells may shed light on why cloning is such an inefficient process.

Highlights from July Stroke: Journal of the American Heart Association
For the first time, research has shown that high doses of acetaminophen can lower body temperature and may limit the debilitating effects of stroke, even in patients who don't have a fever, researchers report in the July issue of Stroke.

Diabetic neurological disease could affect central nervous system
Damage to the nervous system associated with diabetes could influence the central nervous system in addition to the peripheral nervous system, suggest authors of a pilot study published in this week's issue of THE LANCET.

Meet 'Henry and Nick,' seals featured in Science study
A new experiment shows how harbor seals use their hyper- sensitive whiskers to detect hydrodynamic fish trails, a unique way to track prey in murky waters.

Destruction in Mesopotamia: Ancient mysteries fall prey to looters in Iraq, Science feature reveals
In the northern Iraqi town of Khorsabad four years ago, looters sawed the massive stone head from a statue, sliced it to bits, then tried to spirit the remains to cash-heavy Western collectors.

Penn State researchers investigate glass corrosion
Scientists know how iron rusts, copper turns green and galvanized metal develops that zinc oxide coating, but now Penn State researchers are investigating how glass corrodes.

With first comparative look at human and mouse DNA, joint genome institute team confirms gene estimate
Earlier this year, researchers mapping the human genome estimated that human DNA contains about 30,000 genes.

Global warming linked to increase of tick-borne encephalitis in Sweden
The increase in incidence of tick-borne encephalitis in Sweden reported over the past two decades is directly related to the country's increasingly mild climate over the same period, conclude authors of a study in this week's issue of THE LANCET.

Arctic Oscillation has moderated northern winters of 1980s and '90s
The Arctic Oscillation has been linked to wide-ranging climate effects in the Northern Hemisphere, but new evidence by researchers at Colorado State University and the University of Washington shows that in recent decades it has been the key in preventing freezing temperatures from extending as far south as they had previously.

Extended prophylactic treatment after hip or knee replacement reduces risk of venous thrombosis
Patients are at a substantially reduced risk of venous thrombosis after hip or knee replacement if they are given extended anti-clotting prophylactic treatment after surgery and discharge from hospital, conclude authors of a meta-analysis published in this week's issue of THE LANCET.

Risk of uterine rupture during labor higher for women with a prior cesarean delivery
Women with a prior cesarean section, who undergo labor for their second child, are at increased risk of a rupture of the uterus, compared with women who elect another cesarean section birth.

Plasma treatment solves sticky problem for plastic car components
Replacing metal car parts, such as bumpers, with plastic gives automotive manufacturers significant benefits in fuel economy, reduced manufacturing costs, and increased opportunities for recycling, but getting such components to from a strong adhesive bond to the frame of a vehicle has been a major challenge.

Drug war strategy: First fund enforcement then switch to treatment, says O.R. paper
Rejecting a single strategy in the war against drugs, researchers recommend emphasizing law enforcement at the early stage of a new drug epidemic, then shifting funds to treatment when drug use flattens, according to a study published in a journal of the Institute for Operations Research and the Management Sciences (INFORMSĀ®).

Regenerative medicine to be focus of new institute at University of Pittsburgh School of Medicine and UPMC Health System
To realize the vast potential of tissue engineering and other techniques aimed at repairing damaged or diseased tissues and organs, the University of Pittsburgh School of Medicine and UPMC Health System have established the McGowan Institute for Regenerative Medicine (MIRM).

Meditation may cut stress, improving mental and physical health
An intensive program that teaches meditation skills may help people reduce the psychological and physical effects of high stress, according to a new study.

Stroke damages spouses' sense of well-being
The effects of a stroke are all in the family, according to a study that indicates spouses suffer psychological ill-effects immediately after their mate has a stroke, researchers report in the July issue of Stroke: Journal of the American Heart Association. 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