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Science News Archive 2002 - Page 59


Page 59 of 93

Mayo Clinic researchers find useful test for identifying patients

Mayo Clinic researchers have found a renewed use for a test to identify patients at risk of long QT syndrome, a genetic condition that can cause sudden death. The study used epinephrine infusion and electrocardiogram monitoring to detect a specific response in people with long QT syndrome 1, a subtype of the condition.

SourceMayo Clinic·JournalMayo Clinic Proceedings·DateMay 14, 2002

Blocking gene may reduce lung scarring caused by radiation therapy

Researchers suggest that drugs blocking the ICAM1 gene could reduce lung scarring caused by radiation therapy, potentially improving patients' breathing and exercise abilities. In a study, mice lacking this gene showed improved pulmonary function tests and reduced fibrosis, indicating inflammation's role in lung scarring.

SourceVanderbilt University Medical Center·JournalJNCI Journal of the National Cancer Institute·DateMay 14, 2002

Other highlights in the May 15 issue of JNCI

Research findings link insulin-like growth factor I (IGF-I) to decreased lung cancer risk when bound by IGFBP-3. Environmental factors influence DNA methylation patterns in tumor suppressor genes, which may impact cancer incidence. Electro-gene therapy enhances IL-12 protein delivery, triggering long-lasting antitumor responses.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateMay 14, 2002

Why is cloning so hard?

Researchers analyzed cloned mouse embryos for Oct4 gene expression to evaluate genetic reprogramming. Most cumulus-cloned embryos failed to properly reprogram their Oct4 gene pattern, resulting in low developmental potential and viability.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateMay 14, 2002

Extreme climate variance sped extinction of local butterfly populations, researchers say

Researchers at Stanford University found that extreme climate variability in the past 70 years hastened the extinction of Bay Area checkerspot butterfly populations. The study tied climate variability to a mechanism and showed that population extinctions are a prelude to species extinctions, threatening ecosystem services.

SourceStanford University·JournalProceedings of the National Academy of Sciences·DateMay 14, 2002

Opening up research ethics boards

Research ethics boards involved in industry-sponsored pharmaceutical trials are under investigation due to concerns of secrecy and lack of transparency. Industry sponsorship can create conflicts of interest, compromising the integrity of clinical trials and patient safety.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMay 13, 2002

Ominous signs of cryptic marine invasions

Researchers suspect that a six-armed brittlestar, common in shallow coral reefs, may have invaded the western Atlantic via ships over the past two centuries. Genetic markers indicate massive long-distance dispersal and recent mixing of populations from the Pacific and Indian Ocean, raising concerns about ecological consequences.

SourceSmithsonian Tropical Research Institute·JournalProceedings of the Royal Society of London·DateMay 10, 2002

Waiting to have a baby

A recent study published in the American Journal of Human Biology found that women who reproduce later in life have a lower chance of having their descendants survive and thrive. In contrast, women who start families earlier tend to have more lineage success. The researchers used statistical models to analyze the impact of education, i...

SourceUniversity of Michigan·JournalAmerican Journal of Human Biology·DateMay 9, 2002