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Science News Archive February 2015 - Page 8


Page 8 of 31

Epigenome orchestrates embryonic development

Researchers at WashU Medicine found that the epigenome plays a significant part in guiding development in zebrafish embryos within the first 24 hours after fertilization. The study suggests an underappreciated fraction of the genome is involved in gene regulation, with many noncoding regions acting as developmental enhancers.

SourceWashU Medicine·JournalNature Communications·DateFeb 23, 2015

Preliminary results of the JIKI clinical trial against Ebola test the efficacy of favipiravir in reducing mortality in individuals infected by Ebola virus in Guinea

The JIKI clinical trial found encouraging signs of efficacy for favipiravir in individuals with high or moderate viral replication and less severe visceral lesions. In contrast, patients with very high viral loads and serious visceral involvement showed no efficacy from the treatment. These findings have implications for Ebola virus di...

Sobering effect of the love hormone

Researchers at the University of Sydney and Regensburg found that oxytocin prevents alcohol from accessing specific brain sites causing intoxication effects, leading to improved coordination in rats. Oxytocin may help reduce alcohol's impairing effects on speech and cognition after high consumption levels

SourceUniversity of Sydney·JournalProceedings of the National Academy of Sciences·DateFeb 23, 2015

Stretch and relax! -- Losing 1 electron switches magnetism on in dichromium

Scientists at Helmholtz-Zentrum Berlin have discovered a surprising high-spin ground state in the cationic cousin of dichromium, Cr2+, using x-ray magnetic circular dichroism. The team found complete localization of all ten valence electrons and maximum spin coupling, transforming an antiferromagnet into ferromagnetic.

A standard operation procedure to effectively detect dietetically absorbed plant miRNAs

Researchers at Nanjing University have developed a standard operation procedure to detect dietetically absorbed plant miRNAs in human plasma. The study identified six plant miRNAs with dynamic physiological patterns and kinetic absorption curves, suggesting they can exert physiological functions.

SourceNanjing University School of Life Sciences·JournalThe Journal of Nutritional Biochemistry·DateFeb 21, 2015

AU professor develops web tool to speed data collection

A new web application developed by AU Professor Michael Bader and colleagues uses Google Street View technology to speed up researchers' data collection for sociological studies on aging in place. The app eliminates costly and time-consuming aspects of conducting research, providing a reliable tool for large-scale research.

SourceAmerican University·JournalHealth & Place·DateFeb 20, 2015

Bacterial memories

The study found that Listeria monocytogenes adapts its metabolism specifically to the host genotype, correlating with the severity of symptoms in infected mice. Bacteria retain a 'memory effect' that reverts to a common metabolic fingerprint after laboratory cultivation.

Education 'experts' may lack expertise, study finds

A new study suggests that education 'experts' with substantial media presence but little background in education and policy research may be more influential than those with empirical expertise. Researchers found experts associated with organizations like the American Enterprise Institute received nearly 2.5 times more citations.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalEducation Policy Analysis Archives·DateFeb 20, 2015

Protein linked to development of asthma

A study published in Journal of Biological Chemistry identifies CCL28 as a key player in inducing asthma pathology even without a viral infection. This finding opens the door for developing potent and specific CCL28 inhibitors to prevent post-viral asthma in young children.

SourceMedical College of Wisconsin·JournalJournal of Biological Chemistry·DateFeb 20, 2015

Ancient and modern cities aren't so different

A study on ancient settlements in the Basin of Mexico found that larger settlements were more productive and efficient, exhibiting similar urban scaling trends as modern cities. The research team analyzed data from over 2000 years and four cultural eras to estimate populations and site use intensity.

SourceSanta Fe Institute·JournalScience Advances·DateFeb 20, 2015