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Science News for October 8, 2008


Genome sequences of 2 malaria parasites defined

The genome sequence of Plasmodium knowlesi has been defined, providing new research opportunities for comparisons with P. vivax. Establishing similarities and differences between the parasites' genomes will assist in the selection of genetic targets for vaccine and drug development.

SourceResearch Australia·JournalNature·DateOct 8, 2008

Using living cells as nanotechnology factories

Researchers at Arizona State University have developed a method to produce complex DNA nanostructures inside living cells, using the cell's copy machine to replicate millions of copies. This breakthrough could enable the scaling up of DNA nanotechnology and open up new possibilities for synthetic biology applications.

SourceArizona State University·JournalProceedings of the National Academy of Sciences·DateOct 8, 2008

Tracking down the cause of mad cow disease

Researchers at TU Munich and ETH Zurich develop a new method to synthesize anchored proteins, enabling in-depth studies of prions and their influence on conversion to pathogenic forms. The team successfully produces a synthetic GPI-anchored protein, which attaches to cell membranes, helping to track down the infectious form of the prion.

SourceWiley·DateOct 8, 2008

Cosmic eye sheds light on early galaxy formation

Researchers at Durham University and Caltech used gravitational lensing to study a young star-forming galaxy in the distant Universe, revealing its internal velocity structure and spiral disk. The findings provide insight into how the galaxy evolved into a present-day system like our Milky Way.

SourceDurham University·JournalNature·DateOct 8, 2008

Protection for stressed-out bacteria identified

Researchers have discovered how bacteria respond to stress, shedding light on their infectious potential and the development of new drugs to combat bacterial infections. The stressosome molecule protects cells from external danger, triggering a response to adapt to changes in environment.

SourceResearch Australia·JournalScience·DateOct 8, 2008

A fine balance

V3 neurons play a vital role in maintaining balance between both sides of the body, ensuring robust stepping rhythms. The discovery provides an important milestone in understanding neural circuitry that coordinates walking movements.

SourceSalk Institute·JournalNeuron·DateOct 8, 2008

New tool probes function of rice genes

Researchers have developed a new tool to investigate the rice genome, covering nearly all 45,000 genes. The microarray reveals genes crucial for responding to light and stresses, including those involved in photosynthesis and photorespiration.

SourcePLOS·JournalPLOS ONE·DateOct 8, 2008

The pepperoni pizza hypothesis

Researchers at Northwestern University believe spicy food, including pepperoni pizza, can worsen pelvic pain and urinary frequency in women with interstitial cystitis. A new treatment approach using anesthetic patches or suppositories may provide relief.

Learning how not to be afraid

Mice conditioned for safety display reduced anxiety in stressful situations, comparable to antidepressant medications. The study reveals learned safety influences brain development, including increased expression of brain-derived neurotrophic factor and dopamine neurotransmitters.

Waterborne disease risk upped in Great Lakes

A new study suggests that increased climate-related extreme rainfall events in the Great Lakes region will aggravate the risk for outbreaks of waterborne disease. The researchers found a potential 10 to 40% increase in extremely heavy precipitation events, leading to greater potential for flooding and sewage overflow into Lake Michigan.

SourceUniversity of Wisconsin-Madison·JournalAmerican Journal of Preventive Medicine·DateOct 8, 2008

Genome of a monkey-human malaria parasite

The genome of Plasmodium knowlesi, a mosquito-human malaria parasite, has been decoded, revealing unique genetic features that enable it to evade host immune systems. The study found that the parasite's genes are scattered throughout its genome, unlike other malaria parasites, and that it uses molecular mimicry to survive and propagate.

Guidelines urge physical activity during pregnancy

The new guidelines recommend at least 150 minutes of moderate-intensity aerobic activity per week during pregnancy, with benefits including reduced risk of complications and improved long-term child health. Regular postpartum physical activity also supports a woman's overall health and weight management.

SourceMichigan State University·JournalMedicine & Science in Sports & Exercise·DateOct 8, 2008

Pollution from livestock farming affects infant health

A new study in the American Journal of Agricultural Economics explores the effects of livestock facility pollution on infant health. The research found a strong positive relationship between livestock production and infant mortality, with an estimated 7.4% increase in infant deaths for every 100% increase in livestock production.

SourceWiley·JournalJournal of Agricultural Economics·DateOct 8, 2008