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Science News Archive 2009 - Page 239


Page 239 of 277

Researchers generate functional neurons from somatic cells

Scientists successfully generated functionally mature motor neurons from induced pluripotent stem cells, paving the way for new treatments of amyotrophic lateral sclerosis and spinal cord injury. This study offers a promising alternative to embryo-derived cells for regenerative medicine.

SourceWiley·JournalStem Cells·DateFeb 24, 2009

Damon Runyon Cancer Research Foundation awards prestigious fellowships to 13 top young investigators

The Damon Runyon Cancer Research Foundation has awarded prestigious three-year fellowships to 13 outstanding postdoctoral scientists conducting basic and translational cancer research. The fellowships aim to encourage promising young investigators to pursue careers in cancer research, providing independent funding for innovative projects.

Living wills have an impact on pre-hospital lifesaving care

A study found significant confusion among pre-hospital healthcare providers regarding living wills and DNR orders, which can compromise lifesaving care. Implementing clearly defined code status designations within living wills can clarify this confusion and ensure patient safety.

SourceElsevier·JournalJournal of Emergency Medicine·DateFeb 24, 2009

Widespread stress among vets

A study of 1060 vets in north Germany found that psychosocial stress increased with working hours, leading to demoralization and substance abuse. The research suggests a complex relationship between stress, tobacco consumption, problem drinking, and drug use.

SourceBMC (BioMed Central)·JournalJournal of Occupational Medicine and Toxicology·DateFeb 24, 2009

Diabetes a risk factor for postpartum depression

A new study published in JAMA found that low-income women with diabetes have a more than 50% increased risk of experiencing postpartum depression. The research suggests that healthcare facilities and clinicians should pay attention to managing mental health concerns in women with diabetes during pregnancy and the postpartum period.

SourceHarvard Medical School·JournalJAMA·DateFeb 24, 2009

Also in the Feb. 24 JNCI

Researchers found that gene expression profiles differed between tumor samples from patients who had taken vitamin E, selenium, or both supplements compared to those on placebo. The study provides insight into the effects of preoperative supplement use on prostate cancer gene expression, a potential area for future investigation.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateFeb 24, 2009

Bizarre bird behavior predicted by game theory

Researchers used game theory to explain juvenile ravens' unusual foraging behavior, finding that it occurs when searching individually is less efficient. The study suggests that abundant food and social advancement drive the adoption of 'gang' foraging, potentially improving their social status.

SourceUniversity of Exeter·JournalPLOS ONE·DateFeb 24, 2009

Jordan's fossil water source has high radiation levels

Researchers at Duke University discovered that ancient groundwater in Jordan's Disi aquifer contains up to 20 times the safe level of radiation, threatening long-term human consumption. To make it safe, experts recommend diluting or treating the water with technologies like ion exchange and desalination.

SourceDuke University·JournalEnvironmental Science & Technology·DateFeb 24, 2009

Saving wheat crops worldwide

Researchers at CSIRO Australia have discovered a key to overcoming three major cereal diseases, providing long-lasting protection against multiple pathogens. The Lr34 gene sequence offers broad-spectrum control of leaf rust, stripe rust, and powdery mildew, with tests showing constant protection for over 80 years.

SourceCSIRO Australia·JournalScience·DateFeb 24, 2009

Gestures lend a hand in learning mathematics

A study published in Psychological Science reveals that hand movements can aid in creating new math concepts and aid learning. Fourth-grade students who repeated a specific gesture during a lesson solved more problems correctly than those who only spoke the words or partially correct gestures.

SourceUniversity of Chicago·JournalPsychological Science·DateFeb 24, 2009

Growing danger from post-birth bleeding

A recent study found that post-partum haemorrhage is a significant threat to new mothers in high-income countries, resulting in severe outcomes including infertility and death. The authors recommend increased access to active management of the third stage of labour to reduce PPH rates.

SourceBMC (BioMed Central)·JournalBMC Pregnancy and Childbirth·DateFeb 24, 2009

Commercial yeasts upgraded with an enzyme for biofuel production

Researchers at Goethe University Frankfurt have discovered an enzyme that enables yeast cells to ferment xylose into ethanol, a waste sugar in the cellulosic ethanol production process. This single-step conversion technology has the potential to increase biofuel production efficiency and reduce competition with food and feed production.

SourceGoethe University Frankfurt·JournalApplied and Environmental Microbiology·DateFeb 24, 2009

Treating drug-addicted doctors is good medicine

A national-level analysis confirms that Physician Health Programs, which couple referral to treatment with rapid responses to noncompliance, are successful in helping doctors stay drug-free. The study found that over three-quarters of enrolled doctors stayed sober for five years and were able to return to medical practice.

SourceUniversity of Florida·JournalJournal of Substance Abuse Treatment·DateFeb 24, 2009

Chili peppers help to unravel the mechanism of pain

Researchers discovered that capsaicin, found in chili peppers, triggers a desensitization process in pain receptors, allowing them to adapt to painful stimuli. This adaptive response enables the receptor to continuously respond to varying stimuli, leading to a shift in responsiveness threshold.

SourcePLOS·JournalPLOS Biology·DateFeb 23, 2009

Metastasis-promoting protein identified; could provide a prognostic test or target for breast cancer

A study by Boston Children's Hospital researchers has identified lipocalin 2 as a protein that triggers the epithelial to mesenchymal transition in human breast cancer cells, increasing invasiveness and metastasis. The protein is detectable in urine samples, suggesting it may be used for prognostic testing.

SourceBoston Children's Hospital·JournalProceedings of the National Academy of Sciences·DateFeb 23, 2009

Social patents

Experts explore using social networking tools to identify prior art in patent applications, streamlining the process for the US Patent and Trademark Office. The Peer-to-Patent pilot project demonstrates a promising approach to reducing backlog, with similar initiatives being investigated by UK and European offices.

SourceInderscience Publishers·JournalInternational Journal of Technology Transfer and Commercialisation·DateFeb 23, 2009

Immune system 'atlas' will speed detection of kidney transplant

A new immune-system 'atlas' will improve doctors' ability to monitor transplanted organs and shed light on the mechanisms of gradual, cumulative kidney malfunction after transplant. The atlas allows for inexpensive, noninvasive blood tests that show whether a donated kidney is infected or accruing chronic injuries.

SourceStanford Medicine·JournalProceedings of the National Academy of Sciences·DateFeb 23, 2009