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Science News for August 7, 2006


Alzheimer's medication shows promise in treating nerve agent and pesticide poisoning

A study published in the Proceedings of the National Academy of Sciences found that galantamine, an Alzheimer's medication, can effectively counteract the toxic effects of nerve agents and certain insecticides. The treatment was shown to protect the brain from organophosphorus compounds, even when administered after exposure.

SourceUniversity of Maryland Medical Center·JournalProceedings of the National Academy of Sciences·DateAug 7, 2006

Infants, as early as six months, do see errors in arithmetic

Researchers have confirmed that infants can detect arithmetic errors, challenging the idea that executive attention systems develop later in childhood. The study used brain-monitoring technology to analyze infant responses to math problems, finding that they looked longer at screens with incorrect solutions.

SourceUniversity of Oregon·JournalProceedings of the National Academy of Sciences·DateAug 7, 2006

Ultrasound affects embryonic mouse brain development

Researchers at Yale University found that prolonged and frequent ultrasound exposure on pregnant mice causes brain abnormalities, including scattered neurons in inappropriate cortical layers. The study suggests caution against non-medical ultrasound use on human fetuses, but supports its medical applications.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateAug 7, 2006

Tailored HIV-prevention program effective for Latino youth

A tailored HIV prevention program was found to decrease risky sexual behavior among Latino adolescents, increasing condom use and abstinence. The program incorporated aspects of Latino culture into sexual health education messages, resulting in significant reductions in unprotected sex and multiple partners.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateAug 7, 2006

Young teens see pregnancy as a way to enhance relationships

Researchers found that young teens see pregnancy as an opportunity to enhance relationships, but also express concerns about the impact on their education, finances, and overall well-being. The study highlights the need for tailored intervention strategies to address teen-pregnancy prevention.

SourceLifespan·JournalPEDIATRICS·DateAug 7, 2006

Test drive your e-type

A nationwide neighbourhood classification system has been developed using Experian data warehouse and public sources. The system allows users to tap in their postcodes to find out about the likely use of ICTs in their neighbourhoods or those of their friends. Members can also email comments and suggestions.

Meals high in saturated fat impair 'good' cholesterol's ability to protect against clogged arteries

Eating a single high-fat meal can reduce the body's ability to protect itself against heart disease and stroke by impairing the 'good' cholesterol's protective qualities. In contrast, consuming polyunsaturated fat-rich meals can increase the anti-inflammatory properties of HDL, helping to prevent plaque buildup.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateAug 7, 2006

Immune responses in trachoma, and more

Researchers found different types of immune response in children with varying levels of infection, including pro-inflammatory and regulatory responses. These findings may help design vaccines to prevent trachoma infection.

SourcePLOS·JournalPLOS Medicine·DateAug 7, 2006

Mayo Clinic links allergies to Parkinson's disease

Researchers at Mayo Clinic have discovered an association between allergic rhinitis and the development of Parkinson's disease. The study found that people with allergic rhinitis are 2.9 times more likely to develop Parkinson's, highlighting a potential link between inflammation and the disease.

SourceMayo Clinic·JournalNeurology·DateAug 7, 2006

Scientists solve sour taste proteins

Researchers identified PKD1L3 and PKD2L1 proteins in human taste buds responsible for detecting sour tastes. The discovery could lead to developing ways to alter the perception of sour tastes, such as in children's medicines or health foods that currently taste sweet.

SourceDuke University Medical Center·JournalProceedings of the National Academy of Sciences·DateAug 7, 2006

Scientists reverse evolution

University of Utah scientists reverse evolution by reconstructing a 530-million-year-old gene from two modern mouse genes. By combining key portions of Hoxa1 and Hoxb1, they effectively recreated a gene with the function that the original Hox1 performed more than 530 million years ago.

SourceUniversity of Utah Health·JournalDevelopmental Cell·DateAug 7, 2006

Appropriateness criteria issued for cardiac computed tomography, cardiac magnetic resonance imaging

The American College of Cardiology has released new appropriateness criteria for cardiac computed tomography (CCT) and cardiac magnetic resonance imaging (CMR). These guidelines aim to help clinicians, patients, and payers determine when these advanced imaging tests are necessary. The criteria assess the risks and benefits of each test...

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateAug 7, 2006

Socially isolated children may become unhealthy adults

Research suggests that social isolation in childhood is linked to a higher risk of cardiovascular disease and poorer adult health outcomes. Even after adjusting for established risk factors, socially isolated children were more likely to be unhealthy adults with increased cardiovascular risk factors.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateAug 7, 2006

Standard developed for collection of suspicious powders

A new national standard for collecting suspicious powders has been developed by AOAC International, providing a uniform procedure for emergency responders and federal agencies. The standard addresses the need for safe handling, transportation, and analysis of samples from visible powders suspected to be biological threat agents.

SourceAOAC International·JournalJournal of ASTM International·DateAug 7, 2006

Parents of teens more likely than parents of younger children to store firearms unsafely

A study found that parents of teenagers are more likely to store firearms unsafely in their homes compared to parents of younger children. The researchers surveyed 392 parents and found that nearly 42% of parents with teenage children had an unlocked firearm at home, whereas only 28.8% of parents with children under 12 had the same issue.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateAug 7, 2006