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Science News for April 7, 2002


'Bursting' polymer molecules being developed

Researchers at Virginia Tech are developing 'bursting' polymer molecules that can change their architecture in response to stimuli, offering potential solutions for drug delivery and novel wound dressings. The breakthroughs are driven by responsive groups on the ends of the polymer chain.

SourceVirginia Tech·DateApr 7, 2002

Psychologists hunt for new ways to detect precursors to Alzheimer's Disease

Researchers investigate subtle cognitive changes and brain asymmetry as potential precursors to Alzheimer's Disease, using neuropsychological tests to track changes in cognition over time. The studies aim to identify individuals at high risk of developing the disease, enabling earlier intervention and minimizing brain damage.

SourceAmerican Psychological Association·JournalNeuropsychology·DateApr 7, 2002
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K-State professors make discovery in pesticide-resistant bugs

Researchers Kun Yan Zhu and Jian-Rong Gao found that greenbugs with resistance develop a higher rate of the acetylcholinesterase enzyme, requiring more insecticide to kill. This breakthrough may lead to better pest control methods by monitoring resistance in individual fields.

SourceKansas State University·DateApr 7, 2002

UPCI presents study on discovery of protein that suppresses dendritic cells

A University of Pittsburgh Medical Center study reveals that the protein cdc42 plays a crucial role in suppressing dendritic cell activity in cancer. The findings provide a new direction for therapeutic molecular immunopathology and may lead to the development of highly efficient vaccines for cancer therapy.

SourceUniversity of Pittsburgh Medical Center·DateApr 7, 2002
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Forces active in self-assembly of novel molecules measured

Scientists have measured the constants describing self-assembly in the creation of a supramolecular assembly that can potentially important to the processing of many novel materials. Pseudorotaxanes are chemical compounds containing non-covalent linkages, and researchers have explored their possibilities and applications.

SourceVirginia Tech·JournalJournal of the American Chemical Society·DateApr 7, 2002

Brain center searches for patterns

Researchers discovered the brain region responsible for pattern perception, which helps humans recognize danger but also leads to superstitions. The prefrontal cortex processes information about the environment, preparing the organism to change behavior in response to patterns.

SourceDuke University·JournalNature Neuroscience·DateApr 7, 2002