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Science News for November 24, 2011


Researchers decode a puzzling movement disorder

Scientists at the University of Bonn have made a breakthrough in understanding Machado-Joseph disease by studying nerve cells derived from patients' skin cells. The research reveals that electrical activity in these cells triggers protein aggregation, explaining why the disease affects only nerve cells.

SourceUniversity of Bonn·JournalNature·DateNov 24, 2011

Pregnancy is a drag for bottlenose dolphins

A study published in the Journal of Experimental Biology found that pregnant bottlenose dolphins experience significant reductions in swimming speed and adopt a new gait style as they approach delivery. This is due to the extreme physical changes caused by pregnancy, including increased body size and buoyancy.

SourceThe Company of Biologists·JournalJournal of Experimental Biology·DateNov 24, 2011

Rebuilding the brain's circuitry

Researchers successfully transplanted young neurons into diseased brain circuitry, repairing defective circuits and enabling mice to respond to leptin. This breakthrough suggests new therapeutic approaches for conditions like spinal cord injury, autism, and Parkinson's disease.

SourceHarvard Medical School·JournalScience·DateNov 24, 2011

The ABCC9 of sleep

A genetic factor regulating sleep duration has been identified in a study of over 4,000 participants. The ABCC9 gene variant affects sleep duration and is associated with metabolic syndrome symptoms. The discovery may explain the underlying mechanisms linking sleep to metabolic health.

SourceLudwig-Maximilians-Universität München·JournalMolecular Psychiatry·DateNov 24, 2011

Researchers unlock bacteria's beneficial side

Phosphonic acids are persistent pollutants found in common medicinal products, detergents, and herbicides. Bacteria have been shown to break down these molecules with surprising ease, thanks to the identification of specialized proteins that perform key bond-breaking steps.

SourceQueen's University·JournalProceedings of the National Academy of Sciences·DateNov 24, 2011

Mast from classic racing yacht holds one of the keys to sustainable biofuels

A team of international experts has described the detailed structure of cellulose fibres in wood, crucial for developing strong, sustainable composite materials and second generation biofuels. The research reveals that enzymes can bind to specific surface areas on the cellulose fibres, making it easier to break down into glucose.

SourceUniversity of Nottingham·JournalProceedings of the National Academy of Sciences·DateNov 24, 2011

More intensive chemotherapy dramatically improves recurrence and survival in younger patients with aggressive lymphoma

A new study reveals that more intensive chemotherapy regimens significantly improve event-free survival and reduce mortality in younger patients with aggressive diffuse large B-cell lymphoma. Younger patients who received dose-intensive chemotherapy had an 81% event-free survival rate, compared to 67% for those on standard treatment.

SourceThe Lancet_DELETED·JournalThe Lancet·DateNov 24, 2011

Stuck in the mud?

A three-year project led by University of Bangor aims to assess how climate change affects the movement of muddy sediments in rivers, estuaries, and seas. The study focuses on the interaction between cohesive muds and sandy sediments, which plays a crucial role in understanding coastal erosion and deposition.