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Science News Archive March 2009 - Page 19


Page 19 of 26

Small molecules block cancer gene

Researchers at Baylor College of Medicine identified three small molecules that block the activity of Stat 3, a key enzyme in cancer cell survival. The compounds showed promise in inducing programmed cell death in breast cancer cells, offering new hope for cancer treatment.

SourceBaylor College of Medicine·JournalPLOS ONE·DateMar 10, 2009

Why we hate politics

Leading experts Colin Hay and Gerry Stoker say politics has become 'depoliticised' due to key decisions being handed over to independent bodies. They argue that politicians have lost trust in their ability to govern effectively and in the collective interest, leading to a disenchantment with the conduct of politics.

Study suggests salt might be 'nature's antidepressant'

Researchers found that rats deficient in sodium chloride shied away from pleasurable activities, leading to a potential link between salt cravings and depression. High salt intake contributes to high blood pressure and other health problems, but the study suggests salt may have a mood-elevating effect.

SourceUniversity of Iowa·JournalPhysiology & Behavior·DateMar 10, 2009

Noisy workplaces can make workers deaf

A University of Montreal study reveals that over 60% of Quebec's manufacturing sector workers are exposed to noise levels exceeding the norm, increasing work-related accidents and road collisions. Workers with hearing losses face a 7% greater risk of injury.

SourceUniversity of Montreal·JournalOccupational and Environmental Medicine·DateMar 10, 2009

Tissue-cultured smallpox vaccine appears promising

A study found that a tissue-cultured smallpox vaccine elicited high levels of seroconversion and an effective booster response in adults, with no severe adverse events reported. The vaccine's safety and immunogenicity were demonstrated in both previously vaccinated and unvaccinated individuals.

SourceJAMA Network·JournalJAMA·DateMar 10, 2009

Nanotubes find niche in electric switches

Researchers at Rice University and the University of Oulu discovered that carbon nanotube brush contacts can significantly reduce resistance in electrical commutators, leading to improved performance and reduced energy loss. The study found a 10-fold decrease in resistance compared to traditional copper-carbon composite brushes.

SourceRice University·JournalAdvanced Materials·DateMar 10, 2009

Peer-to-peer heart monitoring

Researchers have developed a decentralized peer-to-peer (P2P) system to monitor patients with chronic illnesses remotely. The system, which utilizes idle processing cycles, storage, and bandwidth of individual nodes, can build a scalable model of the network overlay on the internet.

SourceInderscience Publishers·JournalInternational Journal of Computer Applications in Technology·DateMar 9, 2009

Developing fruit fly embryo is capable of genetic corrections

Researchers discover that fruit fly embryos can 'forget' incorrect body plans and develop into recognizable adult flies through cross-regulation among gap genes. This process, known as canalization, allows for robust development despite variable conditions, shedding light on the mechanisms of genetic interactions.

SourcePLOS·JournalPLOS Biology·DateMar 9, 2009

Tiny brain region better part of valor

A new study reveals that a tiny part of the brain's hypothalamus is key to animals' fear responses, contradicting long-held assumptions about the amygdala. The research found that neutralizing this region eliminates fear in rodents, who instead exhibit bold and aggressive behavior towards predators.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateMar 9, 2009

Live fast, die young? Maybe not

A recent study published in Physiological and Biochemical Zoology found that mice with increased metabolism live just as long as those with slower metabolic rates, casting doubt on the rate-of-living theory. This contradicts the idea that faster living animals die young.

SourceUniversity of Chicago Press Journals·JournalPhysiological and Biochemical Zoology·DateMar 9, 2009

Satellite spies on tree-eating bugs

Researchers successfully used satellite images to monitor the extent of saltcedar leaf beetle defoliation on tamarisk. The study suggests that controlling tamarisk through beetle release may have unexpected environmental repercussions.

SourceUniversity of Utah·JournalRemote Sensing of Environment·DateMar 9, 2009

Studies investigate health care at the end of life

A study found that patients who discussed end-of-life care with their physicians had lower healthcare costs in the final week of life. Another report revealed higher healthcare costs among black and Hispanic patients compared to white patients, regardless of cause of death. The findings highlight racial disparities in end-of-life care.

SourceJAMA Network·JournalArchives of Internal Medicine·DateMar 9, 2009

Turn back, wayward axon

Researchers found that two receptors, neogenin and Unc5B, work together to guide a growing axon towards its destination. The discovery sheds light on how the axon navigates through the body and could have implications for understanding neurological disorders.

SourceRockefeller University Press·JournalJournal of Cell Biology·DateMar 9, 2009

Insomnia often appears to be a persistent condition

A recent study found that approximately 30 percent of adults report insomnia symptoms, and 74 percent report experiencing the condition for at least one year. Individuals with severe insomnia symptoms are more likely to relapse, while those with subsyndromal insomnia have a higher chance of remission.

SourceJAMA Network·JournalArchives of Internal Medicine·DateMar 9, 2009