Add BrightSurf on Google Email

Science News Archive November 2012 - Page 11


Page 11 of 23

Engineered bacteria can make the ultimate sacrifice

Scientists have engineered Escherichia coli bacteria that can deliberately die to protect their population, promoting the survival of survivors. The altruistic behavior emerges after sufficient time has passed and can be controlled by tuning the extent of programmed cell death.

SourceEMBO·JournalMolecular Systems Biology·DateNov 20, 2012

Adenotonsillectomy may help resolve obstructive sleep apnea in children with Prader-Willi syndrome

A new study from Nationwide Children's Hospital found that adenotonsillectomy is effective in most children with Prader-Willi syndrome who have mild to moderate obstructive sleep apnea, but may not be curative for those with severe forms. The procedure helped normalize sleep patterns in 89% of patients.

SourceNationwide Children's Hospital·JournalArchives of Otolaryngology - Head and Neck Surgery·DateNov 20, 2012

Electronic visits offer accurate diagnoses, may lead to overprescribing of antibiotics

Researchers found that e-visit patients were more likely to receive antibiotics and less likely to have relevant testing ordered by their physicians before receiving medication. Despite this, the study suggests that e-visits can improve access to care and convenience for patients without compromising quality.

SourceUniversity of Pittsburgh Schools of the Health Sciences·JournalArchives of Internal Medicine·DateNov 19, 2012

Vision stimulates courtship calls in the grey tree frog

A new study published in Behavioral Ecology and Sociobiology found that male grey tree frogs increase their courtship calls when they can see a female approaching. The research, led by Dr. Michael Reichert, suggests that visual cues play a crucial role in attracting mates in nocturnal anurans.

SourceSpringer·JournalBehavioral Ecology and Sociobiology·DateNov 19, 2012

New species literally spend decades on the shelf

A study found that it takes an average of 20.7 years for a newly collected species to be described, with some species taking up to 12 years. This long 'shelf life' poses a significant challenge for conservation efforts, which may come too late if not addressed promptly.

SourceCell Press·JournalCurrent Biology·DateNov 19, 2012

Inpatient sleeping drug quadrupled fall risk

A commonly prescribed inpatient sleeping drug has been associated with a significant increase in falls among hospital patients. The study found that zolpidem use was linked to a fourfold higher fall rate compared to non-users.

SourceWiley·JournalJournal of Hospital Medicine·DateNov 19, 2012

Dry leaves make for juicy science

A team of middle school students, led by a University of Arizona graduate student, conducted the first systematic study on leaf shrinkage when drying out. They found that leaves shrink about 20% on average, but variables such as species and structural investment determine the amount of shrinkage.

SourceUniversity of Arizona·JournalAmerican Journal of Botany·DateNov 19, 2012

JCI early table of contents for Nov. 19, 2012

Researchers identify new therapeutic approaches for acute myeloid leukemia (AML), find immune cells defective in Huntington's disease, and discover signaling pathways contributing to muscle weakness in myotonic dystrophy. Targeting C/EBPG and C/EBPA, or normalizing GSK3β activity may help treat these conditions.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 19, 2012

A code of silence in acute myeloid leukemia

A study published in the Journal of Clinical Investigation found that a transcriptional regulator called C/EBPG was highly expressed in AML samples with an epigenetically silenced C/EBPA gene. By blocking this epigenetic modification, researchers were able to reduce C/EBPG and restore normal myeloid blood cells.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 19, 2012

Comments, traffic statistics help empower bloggers

Researchers found that female bloggers enjoyed blogging due to feelings of empowerment and community connection. Site metrics like traffic visitors and comments predicted continued interest in blogging. Bloggers who felt a strong sense of agency were more influential.

SourcePenn State·JournalJournal of Computer-Mediated Communication·DateNov 19, 2012

Experimental drug improves memory in mice with multiple sclerosis

Researchers have identified a key biochemical marker for cognitive impairment in MS brains and developed an experimental compound to manipulate it, improving learning and memory in mice. The finding has the potential to speed development of new drugs for treating cognitive impairment in MS patients and those with Alzheimer's disease.

SourceJohns Hopkins Medicine·JournalProceedings of the National Academy of Sciences·DateNov 19, 2012

Stress management counselling in the primary care setting is rare

Only three percent of patients receive stress management counselling, highlighting the need for restructuring primary care delivery to include this crucial service as prevention. Stress management counseling is associated with longer office visits, underscoring the importance of providing this support earlier in the disease process.

SourceBeth Israel Deaconess Medical Center·JournalArchives of Internal Medicine·DateNov 19, 2012

Singular polymer, multiple functions

Researchers at the University of Akron have developed a biocompatible polymer structure that can fight infection, filter water, and perform various healing functions. The system can be fabricated and specialized to meet specific needs, offering versatility and convenience.

SourceUniversity of Akron·JournalJournal of the American Chemical Society·DateNov 19, 2012