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Science News for April 28, 2003


Getting the whole picture

A study evaluated online resources for breast cancer clinical trials in Canada, finding that only 29% were listed. The US National Cancer Institute's PDQ Clinical Trials Database identified 86% of trials globally.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateApr 28, 2003
CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Scientists report discovery of cancer-causing gene in childhood kidney tumor

A team of scientists has identified a cancer-causing gene in childhood kidney tumors, which may lead to more precise diagnoses and effective treatments. The discovery was made using molecular tests on tumor cells from patients with papillary renal cell carcinoma, a disease difficult to treat due to its unclear molecular origins.

SourceDana-Farber Cancer Institute·JournalProceedings of the National Academy of Sciences·DateApr 28, 2003

Roadsigns for rodents

In a groundbreaking study, researchers discovered that wood mice employ a sophisticated navigation system involving 'portable signposts'. These signs, created by moving small objects, help the mice orient themselves and efficiently explore their home-ranges. The findings provide new insights into the complex behavior of non-human species.

SourceBMC (BioMed Central)·JournalBMC Ecology·DateApr 28, 2003

SARS could have less serious effects on young children

A study of 10 young children with SARS found that they exhibited milder symptoms such as cough and runny nose, unlike teenagers who showed symptoms similar to adults. The clinical course was also shorter and less aggressive among younger patients.

SourceThe Lancet_DELETED·JournalThe Lancet·DateApr 28, 2003

Sesame oil helps reduce dose of blood pressure-lowering medicine

Researchers found that consuming sesame oil as the sole cooking oil for 60 days lowered patients' blood pressure levels from 166/101 mm Hg to 134/84.6 mm Hg, with a reduced dose of nifedipine from 22.7 mg/day to 7.45 mg/day. The effect may be attributed to polyunsaturated fatty acids and sesamin in sesame oil.

SourceAmerican Heart Association·DateApr 28, 2003
Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Purification of signaling protein may boost tissue engineering

Researchers have purified Wnt protein, a potent trigger of development and cell proliferation, to activate blood-forming stem cells. The discovery offers novel ways to enhance stem cells for cancer patients whose immune systems are compromised by chemotherapy.

SourceHoward Hughes Medical Institute·JournalNature·DateApr 28, 2003

Four gene 'micronet' found to regulate social behavior in female mice

Researchers found that oxytocin and estrogen receptor genes play a crucial role in social recognition in female mice. Female mice lacking these genes failed to recognize normal females after repeated introductions, indicating a 'micronet' necessary for complex behavior.

SourceRockefeller University·JournalProceedings of the National Academy of Sciences·DateApr 28, 2003

Gene discovery may shed light on carpel tunnel syndrome and Lou Gehrig's disease

Researchers discovered the GARS gene responsible for Charcot-Marie-Tooth disease type 2D and distal spinal muscular atrophy type V, providing insights into neurological diseases. The study may lead to new treatment approaches and a better understanding of peripheral nerve diseases.

SourceNIH/National Human Genome Research Institute·JournalAmerican Journal of Human Genetics·DateApr 28, 2003
AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

Researchers discover method of predicting drug resistance in hepatitis-B patients

A new predictive system identifies two DNA polymorphisms that distinguish between HBV-positive patients who respond well to lamivudine treatment and those who develop resistance. The study's findings have significant implications for the treatment of chronic hepatitis B, potentially saving millions from liver disease and cancer.

SourceGeorgetown University Medical Center·DateApr 28, 2003

Staph infection process leading to B cell suicide described by UCSD researchers

UCSD researchers found that the Staph protein SpA triggers a pre-emptive attack on B cells, leading to their death and preventing them from developing memory cells. This process may explain why staph infections are common and recurring. The study's findings have potential applications in treating autoimmune diseases and cancers.

SourceUniversity of California - San Diego·JournalJournal of Experimental Medicine·DateApr 28, 2003

Depression may worsen high blood pressure

Researchers linked poorly controlled hypertension with a higher risk of depression in patients. The study highlights the importance of treating depression to prevent poor blood pressure control and related health risks.

SourceAmerican Heart Association·DateApr 28, 2003
SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Leading minds of tomorrow recognized today

The American Psychiatric Association and AstraZeneca have launched an international awards programme to support young psychiatry researchers working in the fields of bipolar disorder and schizophrenia. The programme aims to provide vital career development support to help advance innovative research and treatment options for patients.

SourceShire Health International·DateApr 28, 2003

Searching for meaning in life may boost immune system

Women who placed more importance on life goals showed higher levels of natural killer cell activity, and writing about a stressful event was not associated with changes in immune activity. The study aims to uncover the ways in which finding meaning influences the immune system.

SourceCenter for Advancing Health·JournalAnnals of Behavioral Medicine·DateApr 28, 2003

Drugs in the news

A study by Alan Cassels and colleagues analyzed newspaper coverage of 5 different prescription drugs in 24 Canadian newspapers. The findings showed that a majority of articles failed to mention potential side effects or harms, while only a small minority provided quantitative information on benefits and harms.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateApr 28, 2003

Meal skipping helps rodents resist diabetes, brain damage

In a study, mice fasted every other day had lower blood glucose and insulin levels than control or calorically restricted groups. Meal-skipping also improved nerve cell resistance to neurotoxin injury, suggesting potential benefits for neurological disorders such as Alzheimer's disease.

SourceNIH/National Institute on Aging·JournalProceedings of the National Academy of Sciences·DateApr 28, 2003
Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Doctors without borders

A survey of international medical graduates who applied to the CaRMS match found that almost half (49.2%) would prefer to practice in communities with a population of less than 100,000 people. However, only 7.8% would choose rural areas with populations under 10,000.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateApr 28, 2003

TSRI scientists show that rare genetic mutations increase susceptibility to sepsis

TSRI scientists have identified rare genetic mutations in the TLR4 gene that increase susceptibility to meningococcal sepsis, a devastating disease with a 12% case fatality rate. The study suggests that individuals with these mutations may be protected from severe sepsis through prophylactic treatment.

SourceScripps Research Institute·JournalProceedings of the National Academy of Sciences·DateApr 28, 2003

SLAC experiment identifies new subatomic particle

The SLAC experiment has discovered a new subatomic particle called the Ds (2317), which combines a charm quark with an anti-strange quark. This unusual configuration has unexpected properties that will provide insight into the force binding quarks together, challenging current understanding of quark forces.

SourceDOE/SLAC National Accelerator Laboratory·JournalPhysical Review Letters·DateApr 28, 2003

U of T research holds promise for optical chip

Researchers at University of Toronto have developed a material that converts electrical current into photons, holding promise for directly linking computers with networks transmitting information in light. The study demonstrates the conversion of electrical current into light using a promising class of nanocrystals, paving the way for ...

SourceUniversity of Toronto·JournalApplied Physics Letters·DateApr 28, 2003
GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

Wake Forest scientists develop colony of mice that fight off virulent cancer

Researchers have created a colony of mice that can fight off aggressive cancer cells, shedding light on a previously unrecognized mechanism of host resistance. The discovery may hold promise for developing better therapies or prevention methods against cancer in humans.

SourceAtrium Health Wake Forest Baptist·JournalProceedings of the National Academy of Sciences·DateApr 28, 2003

US Physics olympiad team

The US Physics Olympiad team consists of 24 high school students from 14 different states who were selected to compete in the International Physics Olympiad. The team will undergo a week-long physics 'boot camp' and attend lectures by prominent scientists before traveling to Taipei, Taiwan for the competition.

SourceAmerican Institute of Physics·DateApr 28, 2003