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Science News for May 2, 2012


Freezing Parkinson's in its tracks

Researchers at Tel Aviv University develop a peptide therapy that mimics DJ-1's normal function, protecting dopamine-producing neurons and reducing mobility dysfunctions. The treatment has shown promising results in pre-clinical trials on mice, indicating a viable option for Parkinson's patients.

SourceAmerican Friends of Tel Aviv University·JournalJournal of Neural Transmission·DateMay 2, 2012

Gas development linked to wildlife habitat loss

A study by the Wildlife Conservation Society found that intense gas development is driving away wildlife from their traditional wintering grounds. In Wyoming's Jonah and PAPA gas fields, researchers discovered an 82% decline of high-quality habitat for pronghorn, a sharp increase in infrastructure, and behavioral shifts among the animals.

SourceWildlife Conservation Society·JournalBiological Conservation·DateMay 2, 2012

Long-term outcome similar with thrombus aspiration and stents in PCI

A study published in Catheterization and Cardiovascular Interventions found that thrombus aspiration during PCI provides similar long-term outcomes to conventional stent use in STEMI patients. The analysis of the PASSION trial data reported no significant difference in major adverse cardiac events between the two groups.

SourceWiley·JournalCatheterization and Cardiovascular Interventions·DateMay 2, 2012

Dry heat increases bark beetle bite

A new study found that rising temperatures and reduced rainfall in European Alpine spruce forests led to more frequent and severe bark beetle attacks. The study suggests that sustainable forest management strategies are necessary to mitigate the impact of climate change on these ecosystems.

SourceSpringer·JournalClimatic Change·DateMay 2, 2012

New path of origin for macrophages

Researchers at TUM discovered that macrophages can originate from two distinct cell lines: one from hematopoietic stem cells and the other from yolk sac cells. The study reveals that yolk sac-derived macrophages migrate to organs during embryonic development and remain there, while blood-circulating macrophages are replaced by stem cells.

Female cowbirds prefer less intense male courtship displays

A new study by the University of California Santa Barbara found that female brown-headed cowbirds prefer less intense wing-spreading displays as courtship behavior. This suggests that current physical condition may not be the most reliable measure of male quality for females to use when choosing a mate.

SourcePLOS·JournalPLOS ONE·DateMay 2, 2012

Black hole caught red-handed in stellar homicide

A team of astronomers led by Suvi Gezari has identified a star rich in helium gas that was ripped apart by the gravitational forces of a supermassive black hole. The star's remains were seen falling into the black hole, while the rest was ejected at high speeds, providing insights into the harsh environment around black holes.

SourceJohns Hopkins University·JournalNature·DateMay 2, 2012

Retirement plans after the Great Recession

A U-Mich study tracks changes in retirement plans after the Great Recession, finding that people who postponed retirement also expected to leave less for their heirs. Most respondents planned to work an additional 1-3 years due to financial losses, but few aimed to recoup their entire economic loss

Desperate fishwives

A team of scientists from Norwegian University of Science and Technology found that during the mating season, female gobies become increasingly aggressive and eager to mate, while males become more coy. As a result, females assume the dominant role in courtship, with males often surrounded by harems of willing partners.

Bladder tests before urinary incontinence surgery in women may be unnecessary

A new study suggests that pre-operative bladder function tests are not necessary for women undergoing surgery for stress urinary incontinence. Women who had only an office check-up had equally successful outcomes as those with both tests, indicating that these tests provide no added benefit for surgical treatment success.

Wheelchair breakdowns becoming more common, reports AJPM&R

A study published in American Journal of Physical Medicine & Rehabilitation found that over 50% of wheelchair users experience a breakdown within six months, with a significant increase in health and safety consequences. The researchers suggest that changes in reimbursement policies and lax standards testing may be contributing factors.

SourceWolters Kluwer Health·JournalAmerican Journal of Physical Medicine & Rehabilitation·DateMay 2, 2012

New study finds dengue fever costing nearly $40 million in US territory of Puerto Rico

A new study published in the American Journal of Tropical Medicine and Hygiene finds that dengue fever inflicts a $37.8 million burden on Puerto Rico each year, with households accounting for almost half of the costs. The study suggests that investing in traditional surveillance and prevention could save $5 for every $1 invested.

SourceBurness·JournalAmerican Journal of Tropical Medicine and Hygiene·DateMay 2, 2012

Mining for heat

A study by McGill University researchers calculates that each kilometer of a deep underground mine could produce 150 kW of heat, enough to warm 5-10 Canadian households. The team develops a general model for predicting geothermal energy potential in other mines.

SourceAmerican Institute of Physics·JournalJournal of Renewable and Sustainable Energy·DateMay 2, 2012

Health, prognosis not taken into account when treating older lung cancer patients, study finds

A study of over 20,000 older patients with non-small-cell lung cancer found that younger patients were more likely to receive treatment than their older counterparts. The research suggests that age alone is not a reliable indicator for cancer treatment decisions, and other health factors should be considered.

SourceUniversity of California - San Francisco·JournalJournal of Clinical Oncology·DateMay 2, 2012

Tiny channel cleanses blood

Researchers at MIT and NUS have developed a microfluidic system that uses natural margination to separate red blood cells from unwanted cellular components. The system demonstrates highly efficient removal of bacteria and inflammatory cells, with potential applications in treating sepsis.

SourceAmerican Institute of Physics·JournalBiomicrofluidics·DateMay 2, 2012

Study finds emotion reversed in left-handers' brains

Researchers found that motivation, a basic building block of human emotion, is computed mainly in the right hemisphere of the brain for left-handers, contrary to previous studies. This discovery has significant implications for the treatment of depression and anxiety disorders, which often involve targeting the left hemisphere.

SourceThe New School·JournalPLOS ONE·DateMay 2, 2012

Flash-heating breastmilk to inactivate HIV is feasible for women in resource-poor countries

A new study from the University of California - Davis Health found that flash-heating breastmilk can reduce the risk of HIV transmission to infants in sub-Saharan Africa. The technique involves heating breastmilk to a high temperature without destroying its nutritional properties, making it safe for babies beyond six months.

SourceUniversity of California - Davis Health·JournalJAIDS Journal of Acquired Immune Deficiency Syndromes·DateMay 2, 2012

A small cut with a big impact

Researchers discovered how ARTD1's DNA recruitment is regulated during inflammation, influencing gene expression and inflammation. The protein is cleaved by caspase 7 into two pieces that can no longer bind to DNA, leading to more efficient gene expression.

SourceUniversity of Zurich·JournalMolecular Cell·DateMay 2, 2012

Aspirin and warfarin equally effective for most heart failure patients

A landmark clinical trial found that aspirin and warfarin are equally effective in preventing a combined risk of death, stroke, and cerebral hemorrhage in heart failure patients. The WARCEF trial, which involved over 2,300 patients, showed that the overall risks and benefits of the two medications are similar.

SourceColumbia University's Mailman School of Public Health·JournalNew England Journal of Medicine·DateMay 2, 2012

Genes can affect how much you enjoy pork in a meal

A study found that genetic variations in an odor receptor gene affect responses to cooked meat, shedding light on controversies surrounding androstenone content. Researchers investigated participants' responses to different pork samples, revealing a significant impact of the gene variant on taste perception.

SourcePLOS·JournalPLOS ONE·DateMay 2, 2012

Childhood emotional maltreatment causes troubled romantic relationships -- Ben-Gurion U. researchers

Researchers found that people who experienced childhood emotional maltreatment tend to have unstable and unsatisfying romantic relationships. This is due to self-criticism stemming from the abuse, which can lead to internalized behaviors and symptoms of Post-Traumatic Stress Disorder (PTSD).

SourceAmerican Associates, Ben-Gurion University of the Negev·JournalJournal of Social and Clinical Psychology·DateMay 2, 2012

Better plants for biofuels

Recent research suggests that plant-derived biofuels could meet 30% of the global demand for liquid transportation fuels without affecting food production. Scientists have identified non-edible plants as a promising area of research to produce biofuels sustainably.

SourceFaculty of 1000·JournalF1000 Biology Reports·DateMay 2, 2012

Genetically modified T cell therapy shown to be safe, lasting in decade-long study of HIV patients

Researchers from the University of Pennsylvania report that genetically modified T cells remain healthy up to 11 years after initial therapy in a decade-long study of HIV patients. The approach provides a framework for gene therapy as a powerful weapon in treating HIV, cancer, and other diseases.

SourceUniversity of Pennsylvania School of Medicine·JournalScience Translational Medicine·DateMay 2, 2012

Electronic nose out in front

A new DNA-based chemical sensor has been developed, capable of discriminating between very similar molecules, even at low concentrations. The system uses carbon nanotubes and fine-tuned DNA strands to produce a measurable electrical signal when exposed to target chemicals.

SourceAmerican Institute of Physics·JournalAIP Advances·DateMay 2, 2012

Why research should be hacked

Australian researchers advocate for open source software principles to be applied to clinical trials, aiming to reduce biases and self-interest. They propose that clinical trial data could be re-analyzed and pooled, leading to more efficient and trustworthy evidence for pressing health problems.

SourceUniversity of New South Wales·JournalScience Translational Medicine·DateMay 2, 2012