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Science News Archive 2009 - Page 27


Page 27 of 277

Chest ultrasound as useful as chest CT in the eval of pediatric patients with complicated pneumonia

A study published in American Journal of Roentgenology found that chest ultrasound is a viable alternative to chest CT for evaluating pediatric patients with complicated pneumonia. The study suggests using chest radiography and ultrasound as initial evaluations, with CT reserved for cases where ultrasound is technically difficult or di...

SourceAmerican College of Radiology·JournalAmerican Journal of Roentgenology·DateNov 20, 2009

Systems biology approach provides insulin resistance insights

Researchers from UC San Diego used a systems biology approach to determine how core biochemical pathways are altered in skeletal muscle cells and fat cells in people with insulin resistance. The study found that common drugs for treating insulin resistance, such as TZDs, alter these pathways, leading to improved drug therapies.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·DateNov 20, 2009

Reasonable alternative to invasive biopsy of palpable breast lesions with benign imaging features identified

A study published in the American Journal of Roentgenology found that short-term follow-up is an acceptable alternative to invasive biopsy for women with palpable breast lesions showing benign imaging features. The study included 320 women with 375 masses and showed a low prevalence of breast cancer.

SourceAmerican College of Radiology·JournalAmerican Journal of Roentgenology·DateNov 20, 2009

Discovery of new type of immune cells regulating inflammation in chronic diseases

Researchers at Helmholtz Munich have discovered Th22 cells, a previously unknown subset of T helper cells that aid in tissue repair and prevent inflammation. The newly found cells hold promise for developing new treatment methods for inflammatory skin diseases and potentially also allergic respiratory diseases.

Funeral industry workers exposed to formaldehyde face higher risk of leukemia

A new study has found that long-duration exposure to formaldehyde used in embalming practices is associated with an increased risk of death from myeloid leukemia. The study, published in the Journal of the National Cancer Institute, also found no associations with other lymphohematopoietic malignancies.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateNov 20, 2009

Parent training complements medication for treating behavioral problems in children with PDD

A study funded by NIMH found that a combination of medication and structured parent training significantly reduced serious behavioral problems in children with autism. The treatment protocol showed greater benefits compared to medication alone, including a lower dose of medication needed for symptom control.

SourceNIH/National Institute of Mental Health·JournalJournal of the American Academy of Child & Adolescent Psychiatry·DateNov 20, 2009

Causative gene of a rare disorder discovered by sequencing only protein-coding regions of genome

Researchers at the University of Washington successfully used exome sequencing to identify a previously unknown gene responsible for Miller syndrome, a mendelian disorder. This breakthrough study demonstrates the efficiency and potential of this strategy in discovering the genetic basis of rare diseases, which could lead to new therapies.

SourceUniversity of Washington·JournalNature Genetics·DateNov 19, 2009

Cigarettes harbor many pathogenic bacteria: Study

A new study found that cigarettes are contaminated with numerous human bacterial pathogens, including Acinetobacter, Bacillus, Burkholderia, Clostridium, Klebsiella, and Pseudomonas aeruginosa. These bacteria may contribute to both infectious and chronic illnesses in smokers and secondhand smoke exposed individuals.

SourceUniversity of Maryland·JournalEnvironmental Health Perspectives·DateNov 19, 2009

Waking up memories while you sleep

Researchers found that sounds presented during naps could guide rehearsal of specific information, strengthening spatial memories. The study suggests that deep sleep is a key time for memory processing, challenging the idea that memories are only processed during REM sleep.

SourceNorthwestern University·JournalScience·DateNov 19, 2009

Surgery not linked to memory problems in older patients

Researchers at Washington University School of Medicine studied 575 patients who underwent surgery and found no evidence of long-term cognitive decline. The study suggests that if older adults physically recover from surgery, they will return to their previous level of cognitive ability within six months or a year.

SourceWashU Medicine·JournalAnesthesiology·DateNov 19, 2009

Search engines are source of learning

Researchers found search engines are used for fact-checking and supporting higher-level information needs, revealing a more complex role in learning. Their study suggests design improvements for search engines can better address users' cognitive and affective aspects.

SourcePenn State·JournalInformation Processing & Management·DateNov 19, 2009

Active hearing process in mosquitoes

A mathematical model explains how male mosquitoes can hear the faintest beats of a female's wings while resisting loud noises. The model reveals that scolopidia located toward the tip of Johnston's organ contribute to mechanical amplification.

SourceUniversity of Bristol·JournalJournal of The Royal Society Interface·DateNov 19, 2009

PLoS Genetics 2009 maize genome collection

The PLoS Genetics special collection presents groundbreaking research on maize genome architecture, revealing new insights into centromeres, transposons, microRNAs, and more. The studies also explore the role of copy number variation and presence/absence variation in shaping maize phenotypes.

SourcePLOS·JournalPLOS Genetics·DateNov 19, 2009

Braking news

Researchers found that car brake particles can cause cellular stress and inflammation in lung cells, particularly with heavy braking. Brake wear particles contain metals like iron and copper, which can damage cell junctions through oxidative stress.

SourceBMC (BioMed Central)·JournalParticle and Fibre Toxicology·DateNov 19, 2009