Brightsurf Science News & Current Events

May 17, 2005
Protein targets tumor vasculature, delays tumor growth in animal study
Treatment with a protein fused to an antibody in tumor-bearing mice led to coagulation of the blood within the tumor blood vessels, tumor tissue death, and tumor growth delay, according to a new study in the May 18 issue of the Journal of the National Cancer Institute.

Sustainable energy technologies: Efford announces national panel members
The Honourable R. John Efford, Minister of Natural Resources Canada (NRCan), today announced the formation of a panel of distinguished experts in the field of energy science and technology (S&T).

MDCT overtakes ventilation-perfusion lung scan for diagnosing pulmonary embolism
MDCT pulmonary angiography is replacing the ventilation-perfusion lung scan to diagnose suspected pulmonary embolism in hospitalized patients, say researchers from Rhode Island Hospital in Providence.

Birth factors associated with risk for autism
Prenatal environmental factors and parental mental health may be associated with a risk of autism, according to an analysis conducted by researchers at the Aarhus University in Denmark, Johns Hopkins Bloomberg School of Public Health and the Centers for Disease Control and Prevention.

Study shows Erbitux may fight colorectal cancer after other therapies fail
Cetuximab, also known as Erbitux, can battle cancer and prolong life in many patients with advanced colorectal cancer who have exhausted all other treatments, according to research presented at ASCO.

New research finds children understand the emotional benefits of following the rules
In this study, children between the ages of 4 and 7 increasingly predicted feeling negative or mixed emotions when they break a rule, and feeling positive or mixed emotions when they follow a rule.

Children of incarcerated mothers exhibit poor attachment to caregivers, mothers
This is the first study to empirically demonstrate that children of incarcerated mothers generally have insecure relationships with their mothers and caregivers.

Breast cancer chemotherapy regimen associated with life-threatening complications
The chemotherapy regimen of doxorubicin plus docetaxel, used to treat breast cancer in a clinical trial, was associated with an increased risk of serious complications, resulting in the premature termination of the trial, according to a study in the May 18 issue of JAMA.

Nutrition gene key in regulating immune system
A gene that signals a yeast cell to make bread rise and mice to eat a better diet also helps selectively silence the immune system, researchers have found.

Managing maternal depression during pregnancy presents significant challenge to clinicians
Women who take antidepressants during the final trimester of pregnancy increase the risk of

Mayo researchers seek methods to make new cancer therapies available more quickly
In their efforts to explore more effective and efficient ways to conduct clinical trials, Mayo Clinic cancer researchers will present new recommendations about how long studies should track results when evaluating new cancer therapies.

Combo drug controls hypertension in hard-to-treat patients
A multi-center study of a tablet that combines two hypertension drugs shows significant benefit for people with hard-to-control blood pressure.

Patients with suspicious axillary breast lymph nodes should undergo fine-needle aspiration
Patients with suspicious axillary lymph nodes in their breasts should first undergo ultrasound-guided fine-needle aspiration to avoid unnecessary surgery, according to researchers from the Evangelico Valdese Hospital in Turin, Italy.

Leading patient safety advocates assess progress in reducing medical error
It has been five years since the release of the Institute of Medicine's landmark report on medical errors,

Too much knowledge can be bad for some types of memory, study finds
Sometimes knowledge can be a bad thing, especially when it comes to exact remembering of certain things.

Ancient immune defense mechanism is no match for HIV-1
Researchers have discovered that mammalian cells infected with HIV-1 engage a primitive defense mechanism that was previously observed only in plants and invertebrates.

Richard A. Meyer, MD, receives the 2005 AIUM William J. Fry Memorial Lecture Award
The American Institute of Ultrasound in Medicine (AIUM) will present Richard A.

New specially coated 'non-stick' tips stents help keep blood vessels open for cirrhosis patients
Stents coated in polytetrafluoroethylene, the same substance used in non-stick cooking utensils, improves their ability to keep blood vessels open in TIPS procedures, decreasing occurrences of relapse and avoiding intervention, say a group of researchers led by Vina C.

Several factors can increase risk for recurrent blood clot
Patients who have a blood clot are at high risk of having another one, and men have more than twice the risk as women, according to a study in the May 18 issue of JAMA.

Unrestrained retina too much of a good thing
When primitive nerve cells begin forming an eye in the mouse embryo, they are programmed to build a retina.

Digital mammography decreases 'call-back' appointments, reducing patient anxiety and cost
The use of digital mammography instead of conventional screen film mammography can lead to significant decreases in the number of patients called back to the hospital for further mammograms, making it easier on the patient and saving money, says a new study.

New collision looks imminent for B-15A iceberg
The mammoth B-15A iceberg appears poised to strike another floating Antarctic ice feature, a month on from a passing blow that broke off the end of the Drygalski ice tongue.

Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage
Cells of the immune system follow a career path that forks at various points in their development.

Over-feeding in infancy might set the stage for childhood obesity
The way obese women feed and interact with their children early in infancy might lay the foundations for obesity later in childhood.

Genetic factors partly influence differences in language development
Data from a longitudinal study involving 4 ½ year old twins has shown that genetic factors appear to influence individual differences in language development among children.

Newly discovered 'branding' process helps immune system cells pick their fights
Scientists have uncovered a new method the immune system uses to label foreign invaders as targets to be attacked.

Teen's ability to multi-task develops late in adolescence
New research shows that the part of the brain responsible for multi-tasking continues to develop until late adolescence.

Ultrasound images transmitted over phone allow real-time diagnosis of patients in poorer countries
Over-the-phone transmission of diagnostic-quality ultrasound images is possible, potentially paving the way for ultrasound examinations to be performed in poorer areas of the world, inexpensively transmitted via the Internet, and read by experienced radiologists elsewhere, a new study shows.

Smoking increases risk for liver, pancreatic and colorectal cancers
Smoking may have a devastating effect on gastrointestinal health and increase a person's risk of developing pancreatic and liver cancer, according to new research presented today at Digestive Disease Week® 2005 (DDW).

Maladapted children change goals during conflicts
New research on how children's goals change when in conflict showed that aggressive and submissive children who had problems with their peers exhibited several antisocial changes to their goals.

Mother birds increase progesterone to hatch females
Cornell University researchers Stephanie Correa, Elizabeth Adkins-Regan and Patricia Johnson have published a study that found that several bird species use progesterone during the first meiosis to bias the sex ratio of offspring to female in The Royal Society's Biology Letters (Vol.

Iodine deficiency, supplements affect thyroid cancer risk in children exposed to radioactive iodine
Exposure to radioactive iodines, mainly iodine 131 (I-131), in childhood is associated with an increased risk of thyroid cancer.

The AIUM celebrates 50 years at the 2005 AIUM Annual convention and preconvention
The American Institute of Ultrasound in Medicine (AIUM) will be holding its 2005 AIUM Annual Preconvention and Convention and 50th Anniversary Celebration in Orlando, Florida, June 18-22, at the Walt Disney World Swan and Dolphin Hotel.

New stomach cancer therapy potentially more convenient and better tolerated
A new combination chemotherapy appears to battle advanced stomach cancer harder than other platinum-based therapies, while offering patients more convenience and potentially less discomfort.

Other highlights in the May 18 JNCI
Other highlights in the May 18 JNCI include a study of the effect of increasing the recall rate in a breast cancer screening program, a study of hormone levels and breast cancer risk in premenopausal women, the elucidation of a novel strategy for inducing cell death in p53-defective tumors, and a commentary on the strengths and weaknesses in cancer prediction models.

Procedure setting, technique and cost are key for effective colorectal cancer screening
Current guidelines recommend that anyone over the age of 50 years be screened for colorectal cancer (CRC) using one of the standard available technologies, including colonoscopy, flexible sigmoidoscopy, air contrast barium enema and fecal occult blood testing.

Sugar beet virus mutation requires Texas touch
The only sugar beets growing in Texas are in the laboratory.

Bee mites suppress bee immunity, open door for viruses and bacteria
A non-native bee mite is causing the dramatic and sudden collapse of bee colonies across the country, but Penn State researchers believe they have found the combination of factors that triggers colony deaths which includes suppression of the bee immune system by the mites.

Mayo researchers to announce new findings about promising early-stage breast cancer treatment
During a poster discussion session at the 2005 American Society of Clinical Onscology (ASCO) Annual Meeting on Tuesday, May 17, Dr.

Zevalin safe and effective for non-Hogdkin's lymphoma patients with advanced disease
According to a University of Pittsburgh Medical Center study, patients with advanced non-hodgkin's lymphoma (NHL) previously treated with chemotherapy and adult stem cell transplantation can safely tolerate ZevalinTM (ibritumomab tiuxetan), a radiolabeled monoclonal antibody that targets radiation directly to a tumor.

Jefferson researcher's results show promise for metastatic eye melanoma
When melanoma of the eye spreads to the liver, patients have few good options.

Exercise reduces risk of recurrence and death in early stage colon cancer patients
Patients treated for early stage colon cancer fared significantly better if they exercised regularly at the level of an hour's walk six times a week, according to a study led by Dana-Farber researchers.

NYU Child Study Center presents third Annual Adam Katz Memorial Lecture series
The New York University Child Study Center is pleased to announce the Third Annual Adam Katz Lecture Series, which includes two lectures on Thursday, May 19 and Friday, May 20, 2005.

Yale immunologist studying host responses to infection named 2005 Searle Scholar
John D. MacMicking, an assistant professor in the Section of Microbial Pathogenesis at Yale School of Medicine, has been named as a 2005 Searle Scholar in support of his research program on novel host defense pathways to infection.

AIUM to honor ultrasound pioneers at the 2005 AIUM 50th Anniversary convention
The American Institute of Ultrasound in Medicine (AIUM) will present awards to several individuals who have significantly contributed to the field of medical diagnostic ultrasound at the 2005 AIUM 50th Anniversary Convention in Orlando, Florida, on June 19, 2005.

Expandable electrodes safe and effective for radiofrequency ablation of liver tumors
The use of expandable electrodes with multiple tips in the treatment of liver tumors by radiofrequency ablation (RFA) is safe and effective, making it a useful alternative to surgery in selected patients, say researchers from the University of Brescia in Italy.

Timing of introduction of gluten into infant's diet associated with appearance of celiac disease
Children with gluten exposure from cereal grains at 4 to 6 months of age have a lower risk of celiac disease than children with exposure before or after this time period, according to a study in the May 18 issue of JAMA.

Epilepsy by the numbers
Scientists at the Evelyn F. and William L. McKnight Brain Institute of the University of Florida report they have found a mathematical way to translate complicated brain wave readings into simple terms to help doctors and nurses more easily identify babies at risk for epilepsy.

Language cues provide 'glue' for visual learning in children
Language cues can provide the

Cancer like colonisation for Aboriginal women
Aboriginal women from rural Queensland are uncertain about seeking medical help for cancer because they believe the disease is fatal and another form of colonisation, according to a new study.

Children's peer group influences ethnic/racial prejudice
Children's tendency to show ethnic/racial prejudice is greater when their friends exclude individuals on the basis of race and when their peer groups feel threatened by outsiders.

Researchers find way to streamline new non-Hodgkin's lymphoma treatment
Researchers at USC and colleagues have found a way to streamline a new form of treatment for patients with non-Hodgkin's lymphoma.

News tips from The Journal of Neuroscience
Newsworthy topics include an article about subthalamic nucleus stimulation in the Parkinsonian rat, published by the Journal of Neuroscience.

Penn Robotics Lab receives $5 million grant to develop robot swarms from MARS
University of Pennsylvania engineers have received a $5 million grant from the Department of Defense to develop large-scale

Mayo Clinic researchers develop new treatment for incurable recurring form of adult brain cancer
A study led by Mayo Clinic researchers and conducted by the North Central Cancer Treatment Group (NCCTG) reports that a new

Misinformation: Seeing is believing
On Sunday, Newsweek magazine retracted an earlier report that U.S.

The dark side of adolescent popularity
For teenagers, popularity itself has a downside. A recent study that followed 185 eighth graders for a year observed that over time, popular adolescents showed greater increases in levels of delinquency and drug use.

What makes someone your sister or brother? No easy question in 2005
Researchers delving into today's complicated range of family set-ups must recognise that 'brother and sister' relationships are now about far more than blood ties and living in the same home, warns a new study sponsored by the ESRC.

Referees's decisions are influenced by spectator pressure
A tartan track separating the soccer pitch from the spectators' stands reduces the home advantage to a spectacular extent.

Too stressed to think?
Chronic stress can be harmful to your health and also to your brain, according  to researchers at the Douglas Hospital Research Center in Montreal.

Latest generation lineal accelerator for radiotherapy
The Cancer Department at the la University of Navarra University Hospital has acquired a Siemens, latest-generation lineal accelerator.

Research shows upbringing affects discipline choices
Parent's upbringing plays a large role in how they decide to discipline their own children, according to new research at Wake Forest University Baptist Medical Center.

Genes may influence nutritional composition of breast milk
The nutritional composition of a mother's breast milk may depend not just on her diet - but on her genes - according to new research at Wake Forest University Baptist Medical Center.

Study shows grapefruit extract can heal stomach ulcers
Extracts of the popular diet item grapefruit have strong antioxidant properties that can have healing effects on stomach ulcers, according to a new study presented today at Digestive Disease Week® 2005 (DDW).

Like the famous doughboy, nanotubes give when you poke 'em
Researchers find nanotubes exhibit radial elasticity, an important finding for the development of nanoelectronics.

Yoga takes a bite out of eating disorders
Exercises that encourage body awareness may promote healthy eating patterns and higher body satisfaction.

Wake Forest scientists find new combination vaccine effective against plague
Plague, a bacterium that ravaged Europe in the Middle Ages and is today one of the most feared potential agents of bio-terrorism, may have met its match, according to Wake Forest University School of Medicine scientists.

Tobacco brands still common in PG-13 movies, despite '98 Master Settlement
Seven years after tobacco companies signed the Master Settlement Agreement prohibiting them from paying for tobacco brand appearances in movies, the number of tobacco brand appearances in PG-13 rated movies has not experienced a statistically significant decrease, according to a study by Dartmouth Medical School researchers.

Whole-body MRI takes less than 20 min to scan a patient's entire body for cancer spread to bone
Whole-body MRI with an automatic moving table is effective for evaluating the entire skeleton in patients with suspected bone metastasis (cancer that has spread to the bone from other parts of the body) in a single imaging scan--and it only takes between 15 and 18 minutes, say two different European studies.

Data confirm panitumumab single-agent antitumor activity in patients with mCRC
Amgen Inc. (Nasdaq: AMGN), the world's largest biotechnology company, and Abgenix, Inc.

CSIRO defends its intellectual property
Some of the world's most significant suppliers of Wireless Local Area Network (Wireless LAN) devices have initiated legal action in the US to try to stop Australia's Commonwealth Scientific and Industrial Research Organisation (CSIRO)* obtaining reasonable royalties on its key US WLAN patent, it was confirmed today.

Cutting-edge technologies signify a new era for colorectal cancer screening
This year, more than 145,000 people will be diagnosed with colorectal cancer (CRC).
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