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Science News Archive October 2000 - Page 4


Page 4 of 6

One in three women may have been abused in childhood

A recent report from the World Bank suggests that violence against women is responsible for one out of every five working days lost. Research found a third of women aged 40-50 had been abused as children, with common symptoms like joint pain and fatigue more likely in those who were beaten or sexually abused.

SourceBMJ Specialty Journals·JournalJournal of Epidemiology and Community Health·DateOct 17, 2000

Bifidobacteria act as a barrier against infection

Researchers have identified two Bifidobacterium strains that exhibit potent antimicrobial properties, protecting the intestinal tract from lethal infection with salmonella. These strains, CA1 and F9, decrease bacterial numbers, prevent entry into cells, and work in concert with gut lining enzymes to produce a barrier against infection.

SourceBMJ Specialty Journals·JournalGut·DateOct 17, 2000

Finding by Syracuse University and University of Michigan researchers reveals secret to mass extinction events

Researchers used a new technique to analyze fossilized otoliths, revealing seasonal temperature records that led to the discovery of colder winters as the cause of the Eocene/Oligocene boundary mass extinction. This finding sheds light on the global-scale problem and provides new insights into climate change's impact on evolution and e...

SourceSyracuse University·JournalNature·DateOct 17, 2000

Randomized trials vs. clinical reality

A review of patients treated with NIPPV found mortality rates were 28.6% higher in the clinical setting compared to randomized trials. The authors recommend developing practice guidelines to optimize NIPPV use. Dr. Sheldon Magder comments on the limitations of relying heavily on randomized trial findings in clinical settings.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateOct 16, 2000

The environment and cancer

The environment plays a significant role in cancer development, with occupational factors and environmental pollution attributed to 5-7% of cancer deaths. Dr. Richard Clapp reviews the relationship between environmental exposure and cancer, emphasizing the importance of cancer prevention and physician screening for hazardous exposures.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateOct 16, 2000

Weizmann Institute scientists develop a novel system for analyzing genetic data that mimics the human capacity for unsupervised learning

The team designed a unique mathematical system for analyzing genetic data based on a computer algorithm that clusters information into relevant categories. The algorithm mimics unassisted learning, categorizing tissue samples into separate clusters according to their gene expression profiles.

SourceAmerican Committee for the Weizmann Institute of Science·JournalProceedings of the National Academy of Sciences·DateOct 15, 2000

Supplemental calcium taken daily can limit early on-set of osteoporosis in children with severe asthma, National Jewish Research finds

Children with severe asthma are at risk of bone loss due to inadequate dietary calcium. Taking a daily calcium supplement can help prevent this condition. Researchers found that only 5-10% of children at the study site were taking a calcium supplement, highlighting the need for increased awareness and supplementation.

SourceNational Jewish Health·JournalJournal of Allergy and Clinical Immunology·DateOct 15, 2000

Interferon Alfa 2b extends overall survival and relapse-free survival in patients with high-risk melanoma, reports University of Pittsburgh-led U.S. I

A definitive study led by John Kirkwood at the University of Pittsburgh Cancer Institute found that high-dose interferon alfa 2b extends both overall survival and relapse-free survival in surgically treated high-risk melanoma patients. This regimen significantly outperforms a comparison vaccine, GMK, in terms of survival impact.

NIDA researchers find that animals exposed to marijuana's active component will self-administer the drug

Researchers at the National Institute on Drug Abuse found that squirrel monkeys will self-administer intravenous injections of THC, a psychoactive compound in marijuana, in doses comparable to those used by humans. This study suggests that marijuana has similar abuse potential as other addictive substances like cocaine and heroin.

SourceNIH/National Institute on Drug Abuse·JournalNature Neuroscience·DateOct 14, 2000

Meteorite may be primitive solar system material, sayScienceauthors

A fragile, charcoal-like meteorite that plummeted onto a frozen Canadian lake last January may represent the most primitive solar system material yet studied. Analysis of its mineral composition and oxygen and carbon isotopes suggests it could be part of a new class of carbonaceous chondrites, more primitive than any found previously.

Taming wild wheat

Researchers at Cold Spring Harbor Laboratory have created a 'map' of the wild emmer wheat genome, revealing hundreds of unique DNA sequences on 14 chromosomes. This new understanding will aid in breeding better wheat crops and shed light on the evolution of wheat.

SourceCold Spring Harbor Laboratory·JournalGenome Research·DateOct 12, 2000

Dual-earner couples follow traditional gender roles

A new study by Cornell University found that dual-earner couples tend to follow traditional gender roles, with husbands' careers given priority. This 'neotraditional' model helps couples manage work and family demands, but may have negative consequences for women's job security and advancement opportunities.

SourceCornell University·JournalSocial Problems·DateOct 12, 2000