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Science News for October 13, 2004


Anti-cholesterol drug treats Alzheimer's disease in mice

A new anti-cholesterol drug, CP-113,818, has shown promise in treating Alzheimer's disease by reducing amyloid plaque accumulation and improving learning and memory in mice. Treatment with the drug resulted in a significant reduction of cholesterol storage in the brain, as well as improved performance on cognitive tests.

SourceCell Press·JournalNeuron·DateOct 13, 2004

Where in the brain decisions are made

Researchers discovered a brain region, lateral intraparietal (LIP) area, plays a key role in subjective decisions about actions. Monkeys trained to play a game against computer opponent adopted the same strategy as humans, suggesting similar neural processes are at play.

SourceCell Press·JournalNeuron·DateOct 13, 2004

Melanin makes skin vulnerable to harmful ultraviolet rays

Research finds that melanin in hair follicles can increase cell death in response to UV radiation, depending on its color. The study used mice with engineered pigmentation to demonstrate this effect, suggesting that people with darker skin may not be as vulnerable to skin cancer as those with fair skin.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateOct 13, 2004

Coke versus Pepsi: It's all in the head

A recent study found that Coke preference is influenced by brand knowledge and activates specific brain regions, including the hippocampus. This discovery highlights the role of cultural messages in shaping taste perception and has important implications for understanding obesity and other health issues related to sugared colas.

SourceCell Press·JournalNeuron·DateOct 13, 2004