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Science News Archive 2008 - Page 49


Page 49 of 240

Seeing a brain as it learns to see

A Duke University research team observed a naïve brain organizing itself to interpret images of motion for the first time. The study revealed that individual neurons develop specific responses and become organized into functional assemblies called cortical columns.

SourceDuke University·JournalNature·DateOct 22, 2008

Streamlining brain signals for speed and efficacy

Researchers at the Salk Institute discovered that the signal transmission between neurons in the brain stem, which controls balance and breathing, is linear, unlike most other signals. The study sheds light on the mechanisms controlling these vital functions and may lead to new biotherapeutic agents.

SourceSalk Institute·JournalNeuron·DateOct 22, 2008

UK teen suicide rates on the decline

Suicide rates among UK teens aged 10-19 decreased by 28%, particularly among males, who experienced a 35% drop. Young males are more likely to commit suicide than females, with three times the rate of female adolescents.

SourceWiley·JournalJournal of Child Psychology and Psychiatry·DateOct 22, 2008

Gene mutation in worms key to alcohol tolerance

Researchers discovered that a naturally occurring gene mutation in worms leads to reduced sensitivity to alcohol's effects, enabling the body to consume more without adverse reactions. The study suggests potential applications in identifying individuals with a predisposition to alcoholism.

SourceUniversity of Liverpool·JournalMolecular Biology of the Cell·DateOct 22, 2008

How eating fruit and vegetables can improve cancer patients' response to chemotherapy

A new study published in the Proceedings of the National Academy of Sciences found that apigenin, a naturally occurring compound in fruits and vegetables, improves cancer cells' response to chemotherapy. By localizing tumor suppressor p53 in the cell nucleus, apigenin facilitates cell death and stops tumor growth.

SourceUniversity of California - Riverside·JournalProceedings of the National Academy of Sciences·DateOct 22, 2008

NC State study shows limits of using 'war on terror' to promote government policies

A new NC State University study reveals that ordinary people can work together to oppose the government's definition of a crisis and show how its actions undermine their American way of life. The study shows that defined as patriotic, common-sense citizens, opponents built a more credible connection to a patriotic American ethos.

SourceNorth Carolina State University·JournalSouthern Communication Journal·DateOct 22, 2008

Building a better bee

A UC Davis researcher has crossed New World Carniolans with Old World bees to create a more productive, winter-hardy, and resistant strain. This genetic research aims to increase resistance to pests and diseases, which are major contributors to the decline of honey bee colonies.

Study documents safety problems for biological products

According to a study published in JAMA, approximately one in four approved biological medicinal products had at least one safety-related regulatory action issued 10 years after their approval. The average time to a safety-related regulatory action was 3.7 years, with 70.7% of actions occurring within five years after approval.

SourceJAMA Network·JournalJAMA·DateOct 21, 2008

Markers of inflammation and blood-clotting tied to hazards of intermittent HIV treatment

Researchers found strong associations between intermittent HIV treatment and higher levels of inflammation and blood-clotting biomarkers, leading to a higher risk of death from non-AIDS diseases. Interleukin-6 (IL-6) and D-dimer levels rose significantly in the intermittent-treatment group after one month.

Fertilizers -- a growing threat to sea life

A new study by Professor Grace Brush highlights the negative impact of fertilizer use on water quality and fish populations in Chesapeake Bay. The imbalanced nitrogen cycle has led to eutrophication, reducing oxygen concentrations and affecting aquatic life.

SourceSpringer·JournalEstuaries and Coasts·DateOct 21, 2008