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Science News Archive 2004 - Page 118


Page 118 of 135

Homeless children have high rates of asthma

A study of 740 homeless children in NYC found that 26.9% had a prior diagnosis of asthma and 12.9% reported symptoms consistent with moderate or severe persistent asthma. The authors suggest that high levels of exposure to adverse psychological factors contribute to the severity and undertreatment of asthma in homeless children.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateMar 1, 2004

Memories light up the corners of our minds

Researchers at MIT discovered that memories with emotional arousal are remembered by the amygdala, whereas calm memories are processed by the prefrontal cortex. This finding has important implications for understanding how the brain makes memories and may lead to treatments for memory loss and learning impairments.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateMar 1, 2004

Elective cesarean sections

The Canadian Medical Association Journal explores the trend of elective cesarean sections, highlighting concerns about comparing vaginal birth to planned cesarean delivery. Hannah argues that only a comparison of planned vaginal and planned cesarean births can determine which carries greater risk to mother and baby.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMar 1, 2004

Minors able to buy nicotine replacement therapy products

A study found that minors can purchase nicotine replacement therapy (NRT) products in 81% of attempts, with most sellers not asking for proof of age. The FDA-approved labeling has little effect on actual sales practice, highlighting the need for improved access to NRT for teens.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateMar 1, 2004

JCI table of contents, March 1 2004

Researchers develop vaccine that prevents tumor growth in mice, while also reversing cardiac dysfunction through gene therapy. These breakthroughs demonstrate the potential of combinatorial approaches to vaccination and gene therapy for treating neoplastic lesions and heart disease.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 1, 2004

Physics tip sheet #40 - March 1, 2004

Researchers have made significant discoveries in controlling friction at the nanometer scale, developing more resilient network architectures, and precisely manipulating millions of atoms. These advancements hold promise for improving nanoengineering applications and enhancing our understanding of fundamental mechanisms.

SourceAmerican Physical Society·JournalPhysical Review Letters·DateMar 1, 2004

Targeted antiviral prophylaxis of flu case contacts could successfully contain pandemic influenza

Using targeted antiviral prophylaxis (TAP) on close contacts of suspected flu cases can effectively contain an epidemic, with only 2% of the population becoming ill and a death rate of 0.04 per 1,000 people. TAP is nearly as effective as vaccinating 80% of the entire population, especially when used for eight weeks.

SourceEmory University Health Sciences Center·JournalAmerican Journal of Epidemiology·DateMar 1, 2004

Viral immunosuppression: Not just a game of hide and go seek

Researchers have identified a dual strategy used by viruses to subvert the immune system, involving the targeting of hematopoietic progenitors and inhibition of dendritic cell maturation. This study sheds light on the mechanisms of viral immunosuppression, enabling better understanding of immune evasion tactics.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 1, 2004

Cancer rates in teens and early 20s rising

Researchers found a significant increase in cancer cases among teenagers and young adults, with certain cancers dominating at different ages. The study suggests that environmental risk factors and genetic susceptibility may play a role in the increasing incidence of adolescent and young adult cancer.

Vaccine nips breast cancer in the bud

A new vaccine has been shown to halt HER-2/neu preneoplastic breast cancer lesions through both morphologic and gene expression data. The findings suggest a potential breakthrough in the treatment of this type of cancer, according to a recent study published in JCI Journals.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 1, 2004

The fastest stopwatch in the world

Researchers create ultrafast stopwatch capable of measuring atomic processes with an accuracy of less than 100 attoseconds. The device uses a combination of X-ray flashes and laser light pulses to detect electrons emitted by atoms, providing insights into chemical reactions and material synthesis.

SourceMax-Planck-Gesellschaft·JournalNature·DateFeb 27, 2004

Drugs limit deadly side effects of graft-versus-host disease

Researchers have discovered that low-dose HDAC inhibitors can prevent the production of inflammatory cytokines, reducing cell damage and improving survival rates in mice with GVHD. The study suggests that these drugs may be used to reduce the risk of death, hospitalization, and serious side effects associated with bone marrow transplants.

SourceMichigan Medicine - University of Michigan·JournalProceedings of the National Academy of Sciences·DateFeb 27, 2004

American Thoracic Society Journal news tips for March 2004 (first issue)

A new study found that multiple Mycobacterium tuberculosis strains are present in patients with active TB, contradicting the long-held theory of a single strain. Additionally, researchers developed a method to isolate and quantify airborne TB aerosols from coughs, showing promise for studying the disease's transmission.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateFeb 27, 2004

Depression can lead to back pain

A new study published in the journal Pain found that people with depression are four times more likely to develop intense or disabling neck and low back pain. Researchers hope to uncover why these conditions are commonly linked, exploring coping methods to break a vicious cycle.

SourceUniversity of Alberta·JournalPain·DateFeb 26, 2004

Oklahoma students win IEEE-USA national award

St. Philip Neri's team won the IEEE-USA national award with their communications system, which uses antennas and titanium microchips to transmit signals via bone conduction. The system was praised for its creativity and potential to become an asset for everyone in the future.