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Science News Archive April 2006 - Page 3


Page 3 of 15

Discoveries should aid research into cause of ALS

Researchers discovered a mechanism by which misfolded SOD1 proteins form aggregates that kill motor neurons in ALS. The normal form of SOD1 is recruited to participate in disease formation through intermolecular disulfide bonds, providing potential sites for therapeutic intervention.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateApr 25, 2006

In utero exposure to urban air pollutants can increase risk

Exposure to combustion-related urban air pollutants during pregnancy is linked to lower scores on mental development tests and a higher risk of developmental delay at age three. The study found that children exposed to the highest levels of polycyclic aromatic hydrocarbons (PAHs) scored significantly lower on cognitive tests.

SourceColumbia University's Mailman School of Public Health·JournalEnvironmental Health Perspectives·DateApr 25, 2006

Girls have big advantage over boys on timed tests

Research by Vanderbilt University's Stephen Camarata and Richard Woodcock found females have a significant advantage over males on timed tests and tasks, especially among pre-teens and teens. The study highlights the need for teachers to understand sex differences in processing speed and teaching strategies.

SourceVanderbilt University·JournalIntelligence·DateApr 25, 2006

New research demonstrates bone-marrow derived stem cells can reverse genetic kidney disease

Researchers at Beth Israel Deaconess Medical Center have discovered that bone marrow-derived stem cells can repair damaged kidney tissue in a mouse model of Alport syndrome, leading to improved kidney function and structure. The study offers a promising therapeutic opportunity for children and adults with the disease.

SourceBeth Israel Deaconess Medical Center·JournalProceedings of the National Academy of Sciences·DateApr 24, 2006

Researchers develop detailed design rules for nanoimprint lithography processing

A three-year study by Georgia Institute of Technology and Sandia National Laboratories provides a roadmap for next-generation micron- and nanometer-scale high-resolution imprint manufacturing. The research develops manufacturing design rules that will give future users a predictive tool kit to know what to expect over a broad range of ...

SourceGeorgia Institute of Technology·JournalJournal of Micromechanics and Microengineering·DateApr 24, 2006

Testes to incubate stem cells

Researchers have successfully isolated and cultured sperm-producing stem cells from mouse testes, providing valuable insights into the development of a culture system for human spermatogenic stem cells. The study also reveals the importance of growth factors GDNF and FGF in enhancing cell growth and survival.

NASA's Chandra finds black holes are 'green'

Black holes are surprisingly efficient at producing energy, with most of the energy released by matter falling toward a supermassive black hole going into high-energy jets. The study also shows that these jets create huge bubbles in the hot gas of galaxies, preventing new stars from forming.

SourceChandra X-ray Center·JournalMonthly Notices of the Royal Astronomical Society·DateApr 24, 2006

Study first to show potential of light-activated gene therapy for knee injuries

Researchers have made progress toward a new form of light-activated gene therapy for cartilage repair, which is safe and compatible with existing surgical techniques. The therapy uses UV light to target specific cells and promote tissue growth, offering hope for treating knee injuries and potentially other conditions.

SourceUniversity of Rochester Medical Center·JournalJournal of Bone and Joint Surgery·DateApr 24, 2006

Environmental effects on genetic adaptation and population dynamics

A study on Glanville fritillary butterflies found that genetic variation affects population growth, with different genotypes favored in small versus large meadows due to differences in maturation and egg-laying strategies. The results suggest a complex relationship between genotype, habitat, and population dynamics.

SourcePLOS·JournalPLOS Biology·DateApr 24, 2006

When the cause is right, politics and surgery sometimes mix

In Mississippi, physicians fought back against malpractice insurance crisis by educating patients on the benefits of tort reform, leading to a cap on noneconomic damages. In Alameda County Medical Center, advocacy focused on patient education helped pass a local tax measure to address financial crisis and protect services.

SourceElsevier·JournalSurgery·DateApr 24, 2006

Many breast cancer survivors not getting recommended mammograms

A study of 797 breast cancer survivors found that only 33% received a mammogram each year over the five years after treatment. Regular mammography for breast cancer survivors declines steadily within five years of treatment, highlighting the need to increase awareness among healthcare providers and patients.

SourceWiley·JournalCancer·DateApr 24, 2006

End-of-life treatment preferences may change as health declines

Patients' views on treatments that may worsen their condition shift as their health declines. After experiencing a decline in functional abilities, patients become more willing to accept treatments for mild and severe physical disability. Cognitive impairment and pain remain unacceptable to most participants throughout the study.

SourceJAMA Network·JournalArchives of Internal Medicine·DateApr 24, 2006