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Science News Archive August 2015 - Page 5


Page 5 of 32

A CNIO team finds the way to generate potentially safer stem cells in the laboratory

A CNIO team has identified the origin of damage to induced pluripotent stem cells and developed strategies to reduce it, resulting in cells with less damage to their genome. This breakthrough improves the safety of iPS cells for use in biomedicine, potentially treating cardiovascular diseases, diabetes, and neurodegenerative disorders.

Pigments, organelles persist in fossil feathers

Researchers have found evidence that melanosomes, which produce melanin pigment, are preserved in the fossil record of Anchiornis huxleyi, a bird-like dinosaur. The study uses electron microscopy and chemical analysis to demonstrate that the microbodies are indeed melanosomes, not microbes.

SourceBrown University·JournalScientific Reports·DateAug 27, 2015

Successful boron-doping of graphene nanoribbon

Researchers at the University of Basel have synthesized boron-doped graphene nanoribbons with controlled band gaps, enabling the development of highly sensitive gas sensors for nitrogen oxides. The material's chemical properties were characterized using atomic force microscopy, revealing high selectivity towards adsorption.

SourceUniversity of Basel·JournalNature Communications·DateAug 27, 2015

Probiotics show no impact preventing gastrointestinal colonization with drug-resistant bugs

A new study published in Infection Control & Hospital Epidemiology found that probiotics do not prevent or eliminate gastrointestinal colonization with drug-resistant organisms in critically ill patients. The research followed 70 patients and showed no significant difference in overall acquisition of any MRDOs between the two groups.

SourceSociety for Healthcare Epidemiology of America·JournalInfection Control and Hospital Epidemiology·DateAug 27, 2015

Survey finds many physicians overestimate their ability to assess patients' risk of Ebola

A survey of primary care physicians found significant variation in how doctors make decisions in situations of uncertainty, with those least likely to encounter Ebola patients being most likely to choose overly intense management. The results highlight the need for additional resources and responsible reporting by news media.

SourceMassachusetts General Hospital·JournalJournal of General Internal Medicine·DateAug 27, 2015

New theory leads to radiationless revolution

Physicists have developed a radical new theory that confines electromagnetic energy without leaking away, with potential applications in explaining dark matter and combating energy losses. The theory contradicts fundamental principles of electrodynamics but could lead to breakthroughs in quantum computers and laser technology.

SourceAustralian National University·JournalNature Communications·DateAug 27, 2015

Is neuroticism fueled by overthinking?

A new theory proposes that neuroticism is driven by high activity in the brain's self-generated thought centers, which can lead to both creative breakthroughs and negative emotions. The study suggests that overthinking may be a key factor in experiencing intense negative emotions even when there is no apparent threat.

SourceCell Press·JournalTrends in Cognitive Sciences·DateAug 27, 2015

Modified bacteria become a multicellular circuit

Rice University scientists have created a multicellular bacterial circuit that allows bacteria to cooperate and control protein expression. This breakthrough enables the development of biological computers that can be programmed through diet, with potential applications in treating diseases and manipulating the gut microbiome.

SourceRice University·JournalScience·DateAug 27, 2015

Short bouts of activity may offset lack of sustained exercise in kids

Researchers found that brief intervals of exercise during sedentary periods can lower children's blood glucose and insulin levels, and may protect against diabetes, cardiovascular disease, and cancer. The study suggests that even short activity breaks can help overcome negative effects on the body.

SourceNIH/Eunice Kennedy Shriver National Institute of Child Health and Human Development·JournalThe Journal of Clinical Endocrinology & Metabolism·DateAug 27, 2015

CanDL database shines light on clinically important cancer gene mutations

Researchers at Ohio State University Comprehensive Cancer Center have designed an online database called CanDL to help molecular pathologists identify key cancer gene mutations. The freely accessible database includes information on 60 genes, 334 distinct variants and 169 unique matching literature references across multiple cancers.

SourceOhio State University Wexner Medical Center·JournalJournal of Molecular Diagnostics·DateAug 27, 2015