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Science News Archive July 2017 - Page 18


Page 18 of 37

New insights into complex processes

Scientists at the University of Würzburg discovered differences in gene expression between embryonic endothelial cells of the central nervous system and other organs, shedding light on the blood-brain barrier's development and maturation. The study also identified transcription factors involved in this process.

SourceUniversity of Würzburg·JournalScience Signaling·DateJul 18, 2017

One amino acid, a whale of a difference

Researchers found a single amino-acid difference between toothed whales and filter-feeding baleen whales that may explain their distinct body shapes. This variation affects the sensitivity of a key receptor, potentially impacting feeding behavior and body size in these species.

SourceUniversity of Michigan·JournalScientific Reports·DateJul 18, 2017

Networking is key for cells during bone formation

Researchers have identified a universal mechanism behind bone cell organization, revealing a quantitative framework to assess bone quality. The study shows that different bone types exhibit varying levels of connectivity but similar efficiency in intercellular transport and communication.

SourceIOP Publishing·JournalNew Journal of Physics·DateJul 18, 2017

How blood vessels slow down and accelerate tumor growth

Researchers have found that the Tie2 receptor on pericytes plays a crucial role in regulating blood vessel growth and maturation. By breeding mice with disabled Tie2 receptors, scientists discovered that tumor blood vessels grew faster and more aggressively without this control, highlighting potential new targets for cancer therapy.

Failures in stethoscope hygiene can lead to patient infections

A quality improvement project found that healthcare providers rarely perform stethoscope hygiene between patient encounters, despite guidelines recommending disinfection. The study highlights the importance of stethoscope hygiene and its potential to transmit pathogens, including MRSA.

SourceElsevier·JournalAmerican Journal of Infection Control·DateJul 18, 2017

Sibling bonding is stronger when dad's around

A study published in Springer's Behavioral Ecology and Sociobiology found that paternal half-siblings in olive baboons develop stronger bonds when their shared father is present. This challenges the long-held assumption that maternal kin dominate primate social behavior.

SourceSpringer·JournalBehavioral Ecology and Sociobiology·DateJul 18, 2017

Weight gain from early to middle adulthood may increase risk of major chronic diseases

A new study by Harvard T.H. Chan School of Public Health finds that cumulative weight gain over the course of early and middle adulthood may increase health risks later in life, including a higher risk of type 2 diabetes, hypertension, cardiovascular disease, and premature death. The study suggests that even moderate weight gain can ha...

Heavy drinking during adolescence: Dire effects on the brain

Adolescent heavy drinking alters brain structures and function, resulting in reduced cognitive abilities. Research highlights the detrimental effects on memory, attention, language, and socio-emotional processing. The review emphasizes the importance of raising awareness about binge drinking risks and promoting future research.

SourceFrontiers·JournalFrontiers in Psychology·DateJul 18, 2017

Making lab equipment on the cheap

Neuroscientists have created a low-cost imaging and microscope system for research, training, and teaching, called FlyPi. The system uses 3D printing and open-source components to perform standard lab protocols at a fraction of the cost of commercially available solutions.

SourcePLOS·JournalPLOS Biology·DateJul 18, 2017

Eat more chicken: Scientists hone in on genetics behind chicken weight adaptation

Researchers used a special experimentally-bred population, the Virginia chicken lines, to understand the genetic architecture behind chicken weight. They identified 20 different genetic loci that explained more than 60% of the additive genetic variance for selected trait.

Study shows language development starts in the womb

Researchers at University of Kansas have discovered that fetuses can discriminate between languages with distinct rhythmic properties, suggesting language development may start in the womb. The study uses magnetocardiogram technology to measure fetal heart rate responses to speech sounds, revealing an early sensitivity to language rhythm.

SourceUniversity of Kansas·JournalNeuroreport·DateJul 18, 2017

The Lancet Child & Adolescent Health: 18 months after double hand transplant, child is now able to write, and feed and dress himself independently

An 8-year-old boy received a double hand transplant and regained independence in writing, feeding, and dressing himself after months of occupational therapy and psychological support. However, he faced setbacks, including treatment of rejections and extensive rehabilitation.

SourceThe Lancet·JournalThe Lancet Child & Adolescent Health·DateJul 18, 2017

Study reveals ways in which cells feel their surroundings

A new study led by Princeton University researchers finds that cells must move around and change shape to gain a meaningful understanding of their environment. The typical cell's environment is highly varied in stiffness or flexibility, making it difficult for the cell to determine its surroundings through mechanosensing.

SourcePrinceton University·JournalNature Communications·DateJul 18, 2017