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Science News Archive August 2009 - Page 11


Page 11 of 22

Flat bacteria in nanoslits

Researchers at Delft University of Technology discovered that bacteria can retain motility in surprisingly narrow channels, growing and dividing instead of swimming. This new phenotype may be more common than thought, with implications for membrane filters and medical applications.

SourceDelft University of Technology·JournalProceedings of the National Academy of Sciences·DateAug 17, 2009

Ocean-drilling expedition cites new evidence related to origin and evolution of seismogenic faults

Scientists have uncovered new evidence on the origin and evolution of seismogenic faults in the Nankai Trough, a region prone to massive earthquakes. The research, conducted during the NanTroSEIZE expedition, reveals that fault activity varies through time, with periods of high and low activity recorded.

Interactive asthma education program reduces need for emergency care and steroid use in children

A study published in the Canadian Medical Association Journal found that an interactive asthma education program reduced the need for emergency care and steroid use in children. The program, which included small-group interaction and personalized materials, improved asthma outcomes and caregiver burden.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateAug 17, 2009

Mexican health care reform has been convoluted and ineffective

A recent analysis published in PLOS Medicine found that twenty-five years of healthcare reforms in Mexico have increased access to medical care, but at the cost of inefficiency and inadequate addressing of health inequities. The study highlights the need for comprehensive reform to improve the Mexican healthcare system.

SourcePLOS·JournalPLOS Medicine·DateAug 17, 2009

Does sugar feed cancer?

Researchers at Huntsman Cancer Institute have discovered that restricting glutamine availability can halt tumor growth by blocking glucose utilization. This breakthrough could lead to the development of new drugs targeting glutamine utilization or MondoA/ TXNIP.

SourceUniversity of Utah Health·JournalProceedings of the National Academy of Sciences·DateAug 17, 2009

JCI online early table of contents: August 17, 2009

Researchers identified miR-143 and miR-145 as key regulators of VSMC contractility and blood pressure. The study found that mice lacking these microRNAs had reduced contractile VSMCs and increased tissue matrix-producing cells, leading to signs of blood vessel disease.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateAug 17, 2009

Honey-bee aggression study suggests nurture alters nature

A new study by University of Illinois researchers reveals that environmental factors can alter aggression levels in honey bees. By analyzing gene expression patterns in response to alarm pheromone, the team found similarities between short-term and long-term changes, suggesting a connection between nurture and nature.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateAug 17, 2009

UCSF/Stanford team finds labor induction need not increase cesarean risk

Elective labor induction at 41 weeks of gestation lowers cesarean risk by 22 percent compared to waiting. Women whose labor was electively induced were also half as likely to have meconium-stained amniotic fluid, a sign of fetal stress. However, physicians need to give inductions sufficient time to work before deciding on a cesarean.

SourceUniversity of California - San Francisco·JournalAnnals of Internal Medicine·DateAug 17, 2009

Researchers find genetic link between physical pain and social rejection

A study published in Proceedings of the National Academy of Sciences has identified a genetic link between physical pain sensitivity and social rejection. Researchers found that individuals with a rare form of the OPRM1 gene are more sensitive to rejection and experience increased brain activity in response to rejection.

SourceUniversity of California - Los Angeles·JournalProceedings of the National Academy of Sciences·DateAug 17, 2009

Cellular crosstalk linked to lung disease

Researchers identified a critical crosstalk pathway between lung epithelial cells and airway smooth muscle cells, contributing to lung diseases like asthma and pulmonary hypertension. The study provides potential new therapeutic targets for treating these conditions.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateAug 17, 2009

eHealth interventions need to be continuously evaluated

A recent study emphasizes the importance of evaluating eHealth interventions to improve the quality and safety of healthcare. Aziz Sheikh and Lorraine Catwell from The University of Edinburgh highlight the need for continuous systemic evaluation of eHealth solutions to address potential risks and challenges.

SourcePLOS·JournalPLOS Medicine·DateAug 17, 2009

How to make a lung

Researchers found that Wnt2 and Wnt2b molecules are crucial for specifying lung progenitor cells in the foregut region. Without these molecules, animals fail to develop lungs, highlighting their importance in treating respiratory diseases. The study's findings also suggest a connection between pulmonary and cardiac development.

SourceUniversity of Pennsylvania School of Medicine·JournalDevelopmental Cell·DateAug 17, 2009

Nanomagnets guide stem cells to damaged tissue

A new technique uses microscopic magnetic particles to target stem cells to sites of cardiovascular injury, resulting in a five-fold increase in cell localization and six-fold increase in cell capture. The method is directly applicable to clinical practice and could lead to the treatment of heart attacks and other vascular injuries usi...