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Science News for August 3, 2010


Chili peppers come with blood pressure benefits

A recent study found that long-term dietary consumption of capsaicin in chili peppers can reduce blood pressure in genetically hypertensive rats by activating the TRPV1 channel and increasing nitric oxide production. This could lead to potential benefits for humans with high blood pressure.

SourceCell Press·JournalCell Metabolism·DateAug 3, 2010

They shall not pass!

A study by LMU researchers found that neutrophils play a crucial role in blood coagulation and antimicrobial defense, trapping pathogens in small blood vessels. Excessive clotting, however, can lead to life-threatening conditions like heart attack and stroke.

SourceLudwig-Maximilians-Universität München·JournalNature Medicine·DateAug 3, 2010

AGU journal highlights -- Aug. 3

Scientists studied the impact of a prolonged Sun cycle on Earth's conveyor belt and found that it may have led to a longer cycle. Additionally, researchers examined how global water supply sharing affects drought vulnerability, finding that sharing water globally during times of drought can increase societal resilience.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateAug 3, 2010

Faster DNA analysis at room temperature

Paul Li's new technique combines DNA microarrays with microfluidic devices, allowing for faster and more efficient DNA analysis at room temperature. The method uses gold nanoparticles to separate single strands of DNA, enabling quicker detection and identification of specific genetic sequences.

SourceAmerican Institute of Physics·JournalBiomicrofluidics·DateAug 3, 2010

Mobile obstetrics project improves health of mothers in Eastern Burma

A community-based maternal health delivery strategy known as the MOM Project increased access to maternal health care services for internally displaced women in eastern Burma. The study found a ten-fold increase in women assisted at delivery by emergency obstetric care workers, resulting in improved antenatal and postnatal care outcomes.

New tagging technique enhances view of living cells

A new tagging technique developed by researchers at the University of Illinois Chicago provides a clearer and more dynamic view of protein-protein interactions in living mammalian cells. The technique uses luminescence resonance energy transfer to label proteins with differently colored, luminescent molecules, allowing for faster data ...

SourceUniversity of Illinois Chicago·JournalProceedings of the National Academy of Sciences·DateAug 3, 2010

Generating energy from ocean waters off Hawaii

The University of Hawaii at Manoa has identified the Leeward side of Hawaiian Islands as a promising location for ocean-based renewable energy plants using seawater to drive massive heat engines. This technology, known as Ocean Thermal Energy Conversion (OTEC), has the potential to produce steady amounts of renewable energy by harnessi...

SourceAmerican Institute of Physics·JournalJournal of Renewable and Sustainable Energy·DateAug 3, 2010

Quality-adjusted life years lost to US adults due to obesity more than doubles from 1993-2008

A new study found that the US adult obesity burden has significantly increased since 1993, with quality-adjusted life years (QALYs) lost due to morbidity and mortality from obesity more than doubling. The prevalence of obesity for US adults rose from 14.1% to 26.7%, and obesity-related QALYs lost followed a similar pattern.

SourceElsevier Health Sciences·JournalAmerican Journal of Preventive Medicine·DateAug 3, 2010

Innovative MOM program may improve maternal health in eastern Burma

A community-based maternal health delivery strategy, MOM, implemented in eastern Burma improved access to antenatal and postnatal care, skilled birth attendants, and family planning. The project increased women's participation in these services by up to tenfold, with modern contraception use rising from 24% to 45%.

SourcePLOS·JournalPLOS Medicine·DateAug 3, 2010

Marine Pied Piper leads Nemo astray

A new study found that short exposure to artificial noise makes fish attracted to inappropriate sounds, putting their survival at risk. The researchers used underwater experiments to show that baby reef fish can learn and remember specific sounds, including those made by humans.

SourceUniversity of Bristol·JournalBehavioral Ecology·DateAug 3, 2010

Is your hemoglobin 'trending'?

Researchers at Tel Aviv University discovered that low hemoglobin levels can indicate a potential for colon cancer years before it's diagnosed. A continuous long-term decline of more than 0.28 grams per decilitre over a four-year period may serve as a warning of illness on the horizon.

SourceAmerican Friends of Tel Aviv University·JournalEuropean Journal of Cancer Prevention·DateAug 3, 2010

Scientists develop the first model for investigating the origins of testicular cancer in humans

Researchers have created a human testicular tissue model to study testicular germ cell cancer (TGCC) origins. The model, developed by Dr. Rod Mitchell and Professor Richard Sharpe, enables testing of environmental chemicals' impact on fetal development and may help identify treatments for disorders like Frasier or Denys-Drash syndrome.

New inexpensive solar cell design

Scientists at University of Toronto have developed a new inexpensive solar cell design that uses nickel instead of gold, reducing material costs by 40-80 percent. The design employs low-cost electrical contacts, including nickel, to gather the electrical current produced by colloidal quantum dot solar cells.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateAug 3, 2010

Cells use water in nano-rotors to power energy conversion

A team of scientists has provided the first atomic-level glimpse of the proton-driven motor from ATP synthases, enzymes central to cellular energy conversion. The study revealed a water molecule in the critical rotor element of a bacterial nano-motor that shares common features with human mitochondria and bacteria.

SourcePLOS·JournalPLOS Biology·DateAug 3, 2010

More detailed picture of asthma may yield dramatically improved treatment

Researchers at the University of Texas Medical Branch have developed new techniques to identify specific asthma subtypes using protein patterns in airway lining fluid. This allows for targeted medication and potentially improved treatment outcomes. The study aims to reduce trial and error in asthma diagnosis and treatment.

SourceUniversity of Texas Medical Branch at Galveston·JournalClinical and Translational Science·DateAug 3, 2010