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Science News for September 12, 2007


Scientists eye secrets of retinal regeneration

Researchers at Weill Cornell Medical College have discovered a crucial mechanism driving the growth of light-sensing discs in rod cells, shedding new light on retinal health and disease. The study's findings could lead to significant advances in understanding and treating eye diseases such as retinitis pigmentosa.

SourceNewYork-Presbyterian·JournalCell·DateSep 12, 2007

Genes and drugs team up to lower blood pressure

Researchers identified single nucleotide polymorphisms (SNPs) in the adducin 2 gene that influence blood pressure regulation among people with hypertension. The study found associations between SNPs and differential responses to different antihypertensive drugs, highlighting potential for tailored treatment regimens.

SourceBMC (BioMed Central)·JournalBMC Medical Genetics·DateSep 12, 2007

Loneliness is a molecule

Researchers at UCLA identified a distinct pattern of gene expression in immune cells from chronically lonely individuals. This finding suggests that social isolation affects the activity of genes driving inflammation and may provide a molecular framework for understanding its link to heart disease, viral infections, and cancer.

SourceUniversity of California - Los Angeles·JournalGenome Biology·DateSep 12, 2007

DNA analysis shows true dispersal of protozoa

A study published in BMC Evolutionary Biology found that some protozoa are globally dispersed, while others are geographically restricted, suggesting a moderate degree of endemicity. The analysis used a new fast-evolving DNA marker to reveal higher biodiversity than previously thought.

SourceBMC (BioMed Central)·JournalBMC Evolutionary Biology·DateSep 12, 2007

Righting the balance: energy for health

The Lancet Series on Energy and Health highlights the critical link between energy and health, calling for global control of greenhouse gases and affordable technologies to reduce indoor air pollution. The series advocates for a low-carbon, low-energy transportation system and economic policies that mitigate harmful energy practices.

SourceThe Lancet_DELETED·JournalThe Lancet·DateSep 12, 2007

Taxol bristle ball: a wrench in the works for cancer

Researchers at Rice University have discovered a way to load dozens of molecules of the anti-cancer drug paclitaxel onto tiny gold spheres, creating a uniform delivery system that targets cancer cells more effectively. The new approach aims to reduce side effects and improve the effectiveness of chemotherapy.

SourceRice University·JournalJournal of the American Chemical Society·DateSep 12, 2007

Lighter gas reduces damage to optics in extreme ultraviolet lithography

Scientists have developed a technique to generate light and reduce damage in extreme ultraviolet lithography by adding a lighter gas to the plasma. This reduces the number and energy of xenon ions reaching the collector surface, extending its lifetime while maintaining minimal impact on light production.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalIEEE Transactions on Plasma Science·DateSep 12, 2007

Physicists pin down spin of surface atoms

UC Berkeley physicists have successfully measured the spin of an individual atom on a surface, a key achievement for both quantum computing and spintronics. By employing low-temperature spin-polarized scanning tunneling spectroscopy, researchers were able to determine the spin of isolated adatoms atop cobalt nanoislands.

SourceUniversity of California - Berkeley·JournalPhysical Review Letters·DateSep 12, 2007

The molecular signature of loneliness

A new study found that chronically lonely individuals have altered gene-expression patterns, including increased inflammatory signalling. This molecular signature may provide a framework for understanding the link between social isolation and diseases like heart disease, infection, and cancer.

SourceBMC (BioMed Central)·JournalGenome Biology·DateSep 12, 2007

Putting stem cell research on the fast track

Researchers created methods to study millions of stem cells on devices the size of a microscope slide, enabling thousands of individual stem cell experiments to be carried out quickly. A platform was also developed to understand how different genes impact stem cell function or development, allowing for rapid screening of genetic sequen...

SourceRensselaer Polytechnic Institute·JournalStem Cells·DateSep 12, 2007

Can consumers be confused into buying? Yes -- and more easily than you think

Researchers found that disrupting consumers with confusing sales pitches can increase sales by restating in a familiar way, boosting student interest groups and tuition increases. The 'disrupt-then-reframe' technique exploits the need for cognitive closure, making susceptible consumers more likely to freeze their judgments.

SourceUniversity of Chicago Press Journals·JournalJournal of Consumer Research·DateSep 12, 2007

Thousands of starving children could be restored to health with peanut butter program

A new peanut butter-based program has shown remarkable success in treating severe malnutrition in children in Malawi, with 89% of severely malnourished children and 85% of moderately malnourished children recovering after treatment. The treatment, known as Ready-to-Use Therapeutic Food (RUTF), was implemented at 12 rural health centers...

SourceWashington University in St. Louis·JournalMaternal and Child Nutrition·DateSep 12, 2007

Study by Pittsburgh researchers identifies possible vaccine target for chlamydia

Scientists at Children's Hospital of Pittsburgh have identified a plasmid-deficient strain of Chlamydia that fails to cause disease in animal models. This finding represents a major step forward in developing a vaccine against chlamydial disease, with potential to protect against damage to reproductive organs and infertility.

SourceChildren's Hospital of Pittsburgh·JournalThe Journal of Immunology·DateSep 12, 2007

Hospital bugs get from bottom to bedrail

Research finds that Staphylococcus aureus bacteria can contaminate hospital surfaces and patient hands through stool samples, increasing the risk of infections. The study also reveals a significant link between intestinal colonization and S. aureus skin presence in hospitalized patients.

SourceBMC (BioMed Central)·JournalBMC Infectious Diseases·DateSep 12, 2007