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Science News for September 6, 2004


'Planned-care method' of asthma care reduces kids' symptoms

A new planned-care method for children with asthma has been shown to reduce symptoms by 13 days per year, need for rescue medication by a third, and improve adherence to medication as prescribed. The method involves regularly scheduled visits with specially trained nurses and extra education for physicians in asthma management.

SourceNorthwestern University·JournalArchives of Pediatrics and Adolescent Medicine·DateSep 6, 2004

Heart gene yields insights into evolution, disease risk

A study of 2,400 British middle-aged men found that the positive selection for a gene variant in the MMP3 gene resulted in a 43% lower incidence of coronary artery heart disease. The researchers suggest that this variation is not just harmless mutation, but rather a process contributing to population health.

SourceDuke University·JournalCurrent Biology·DateSep 6, 2004

Common cold virus can cause polio in mice when injected into muscles

A study by Duke University Medical Center found that Coxsackievirus A21 can cause polio-like symptoms in genetically engineered mice, as it bypasses the usual nasal cavity route and infects muscle cells instead. The findings have significant implications for the understanding of viral behavior and potential vaccine development.

SourceDuke University Medical Center·JournalProceedings of the National Academy of Sciences·DateSep 6, 2004

Mitochondrial genes cause nuclear mischief

Researchers found over 200 mitochondrial genetic fragments integrated into nuclear genome, potentially disrupting human health. These fragments, known as NUMTs, were more likely to insert themselves within active genes, causing disease.

SourcePLOS·JournalPLOS Biology·DateSep 6, 2004

The doctors' view of flu vaccines for infants and toddlers

Pediatricians and family physicians surveyed by researchers from the University of Rochester Medical Center support expanding flu vaccination to healthy infants and toddlers. The study found that 58% of doctors would favor this expansion, despite citing high costs and parental concerns about vaccine safety as major barriers.

SourceUniversity of Rochester Medical Center·JournalArchives of Pediatrics and Adolescent Medicine·DateSep 6, 2004

Do genes respond to global warming?

A recent study published in PLOS Biology found that climate change can shape genetic diversity in mammals. Researchers analyzed fossil samples and contemporary data from two mammal species, the Montane vole and northern pocket gopher, and discovered that climate-induced habitat alterations influenced variation in genetic diversity.

SourcePLOS·JournalPLOS Biology·DateSep 6, 2004

Genetic map of important tree genes outlined

A groundbreaking study reveals a comprehensive genetic map of important tree genes, enabling scientists to unlock the secrets of tree biology. The database contains over 102,000 gene sequences from the Populus genus, allowing researchers to explore the genetic functions of trees and their responses to environmental stresses.

SourceOregon State University·JournalProceedings of the National Academy of Sciences·DateSep 6, 2004