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Science News Archive 2005 - Page 84


Page 84 of 165

A 'dimmer switch' for genes

Researchers found that the unstructured regions of protein Ets-1 play a crucial role in controlling gene expression, acting like a dimmer switch rather than an on-off switch. The study reveals that phosphorylation affects protein activity by decreasing internal motion and altering gene binding.

SourceUniversity of Utah Health·JournalScience·DateJun 30, 2005

E-mail can be good for you

A 12-week e-mail campaign increased physical activity levels and confidence in participating in physical activity. The study also found a significant reduction in body mass index (BMI) among those receiving the emails, while the control group experienced a slight increase.

SourceUniversity of Alberta·JournalAmerican Journal of Health Promotion·DateJun 30, 2005

What don't we know? Science presents the great unsolved scientific mysteries of our time

The American Association for the Advancement of Science has identified 125 major questions that scientists have yet to answer, including the nature of dark matter and the biological basis of consciousness. The journal's special issue marks its 125th anniversary and explores these fundamental gaps in scientific knowledge.

Knowledge of Tuskegee study doesn't increase medical mistrust

A recent study reveals that knowledge of the Tuskegee Study is less important than negative interactions with healthcare systems in fueling mistrust among African-Americans. The study found significant racial disparities in mistrust, with black participants more likely to believe a similar study could occur today.

SourceJohns Hopkins Bloomberg School of Public Health·JournalJournal of the National Medical Association·DateJun 30, 2005

A giant step toward tiny functional nanowires

Researchers at Northwestern University create a new method to produce nanowires with controlled gaps, enabling the design of devices for diagnostics and drug discovery. The technique, called on-wire lithography, allows for the fabrication of nanowires with precise electrical measurements on individual molecules.

SourceNorthwestern University·JournalScience·DateJun 30, 2005

Mountain-building process much faster – and cooler – than previously thought, say Queen's geologists

Researchers at Queen's University have discovered a 13-million-year cycle in the mountain-building process, which is significantly shorter than previously believed. This finding has implications for our understanding of geological processes that shape the Earth, including the formation of volcanoes and deep-seated continental earthquakes.

SourceQueen's University·JournalNature·DateJun 29, 2005

Scripps research scientists discover new key to pulmonary edema in respiratory distress syndrome

Researchers have identified a molecular mechanism controlling lung dryness and fluid entry, potentially leading to better prognosis for those with acute respiratory distress syndrome. The discovery focuses on the SIP3 receptor, which, when activated, causes pulmonary edema, offering new avenues for treatment.

SourceScripps Research Institute·JournalProceedings of the National Academy of Sciences·DateJun 29, 2005