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Science News Archive April 2003 - Page 3


Page 3 of 9

NHLBI study finds all-in-one approach to lifestyle changes effectively lowers blood pressure

The PREMIER study found that an all-in-one approach to lifestyle changes, including diet and physical activity, significantly lowered blood pressure in participants. The study showed that those who made the greatest lifestyle changes had the best results, with significant reductions in systolic and diastolic blood pressure.

Torture in Mexican criminal justice system still common, say doctors who examine victims

A study by Physicians for Human Rights and the University of Michigan Health System found that two-thirds of federal forensic doctors reported detainee torture, with nearly half documenting evidence. The incidence of torture may be declining, but monitoring and evidence-gathering are crucial to overcoming the country's history of abuse.

Megaportions: What's a body to do?

Experts recommend developing strategies to persuade consumers to eat in moderation, including marketing and labeling changes. Modified foods with reduced fat and added water-rich vegetables can also help reduce calorie intake while maintaining palatability.

SourcePenn State·JournalNutrition Today·DateApr 22, 2003

Unusually long and aligned 'buckytubes' grown at Duke

The researchers successfully grew extremely long and straight single-walled carbon nanotubes by heating samples quickly, achieving lengths of over 2 millimeters. This breakthrough could enable the creation of billionths-of-a-meter scale electronic circuitry and opens up new possibilities for nanoelectrical components.

SourceDuke University·JournalJournal of the American Chemical Society·DateApr 22, 2003

Professors study how we remember TV news

Researchers have identified a phenomenon where TV viewers misremember facts from news stories, often due to stereotypical thinking. To combat this, they suggest using semantic elaboration to promote critical thinking. By displaying the wrong-doer's face before or alongside the news anchor, false memories can be corrected.

SourceKansas State University·JournalJournal of Broadcasting & Electronic Media·DateApr 22, 2003

Scientists discover unique source of stem cells

Researchers have identified a new source of stem cells in human teeth, known as SHED (Stem cells from Human Exfoliated Deciduous Teeth), which can grow rapidly in culture and differentiate into specialized cells. This discovery may lead to breakthroughs in tooth repair, bone regeneration, and neural injury treatment.

SourceNIH/National Institute of Dental and Craniofacial Research·JournalProceedings of the National Academy of Sciences·DateApr 21, 2003

New brain imaging pinpoints areas of brain most crucial for normal functioning

Researchers have developed a new brain imaging technique called Voxel-based Lesion-Symptom Mapping (VLSM), which pinpoint areas of the brain most crucial for normal functioning. The method uses structural MRI scans and compares them to functional brain imaging data, allowing for more accurate mapping of brain damage and behavior.

SourceUniversity of California - San Diego·JournalNature Neuroscience·DateApr 21, 2003

Living with schizophrenia

A new virtual reality device re-creates hallucinations associated with schizophrenia, helping patients better understand their condition and adhere to medication. The technology also offers healthcare professionals a tool to assess treatment effectiveness, ultimately improving patient outcomes.

U of MN study finds bile acid reduces apoptosis

A University of Minnesota study has found that tauroursodeoxycholic acid (TUDCA) significantly reduces injury associated with hemorrhagic strokes in rats. The bile acid crosses the blood-brain barrier and induces survival pathways while inhibiting destructive ones, leading to a 50% decrease in lesion volume.

SourceUniversity of Minnesota·JournalProceedings of the National Academy of Sciences·DateApr 21, 2003

Study sheds light on Chlamydial pathogens

A new study by The Institute for Genomic Research found close similarity among the DNA sequences of Chlamydiae pathogens, including C. trachomatis, C. pneumoniae, and C. muridarum, which cause human diseases such as blindness and pneumonia. Nearly 800 genes discovered in C. caviae were also found in these other bacteria.

SourceThe Institute for Genomic Research·JournalNucleic Acids Research·DateApr 21, 2003

The magic behind merlin

Researchers have identified a key function of merlin in maintaining adherens junctions, which are essential for suppressing cancer development and progression. The study reveals that loss of merlin results in destabilization of these junctions, leading to unchecked cell proliferation and tumor formation.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateApr 18, 2003

Emerging stronger from the China crisis

The editorial highlights China's slow information-gathering from rural districts and secretive attitude to national health statistics as major challenges. A concerted effort to compile accurate statistics on HIV/AIDS prevalence could demonstrate China's ability to learn from its mistakes and acknowledge global responsibilities.

SourceThe Lancet_DELETED·JournalThe Lancet·DateApr 17, 2003