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Science News for September 18, 2013


Services lacking for young gay black men

A new study by Michigan State University scholars highlights the lack of resources for young gay black men who experience trauma, depression, substance abuse, and high-risk sexual behavior. The study found nearly a third of participants reported experiencing sexual assault at an average age of 10, with many experiencing multiple forms ...

SourceMichigan State University·JournalJournal of HIV/AIDS & Social Services·DateSep 18, 2013

African dust storms in our air

Researchers found that African dust particles more than doubled during a major Saharan dust intrusion in Houston, Texas, raising concerns about health risks for vulnerable populations. The study provides new insights into the impact of Saharan air outbreaks on climate and human health, including potential effects on hurricane activity.

SourceUniversity of Miami·JournalEnvironmental Science & Technology·DateSep 18, 2013

Beyond quantum simulation: JILA physicists create 'crystal' of spin-swapping ultracold molecules

Researchers created a crystal-like arrangement of ultracold gas molecules that can swap quantum spin properties, potentially simulating or inventing exotic materials. The novel structure was achieved by manipulating the molecules' spins with microwave pulses, creating a 'superposition' of two opposite spins.

In water as in love, likes can attract

A team led by chemist Richard Saykally and theorist David Prendergast has observed contact pairing between guanidinium cations in aqueous solution, governed by water-binding energy. This phenomenon challenges the long-held assumption that like charges repel, suggesting a new understanding of ion interactions in water.

SourceDOE/Lawrence Berkeley National Laboratory·JournalThe Journal of Chemical Physics·DateSep 18, 2013

Modeling and managing schizophrenia

Researchers developed an Awareness Information Net (AIN) model to monitor patient behavior and spot problems, enabling timely intervention by carers, experts, and patients. The collaborative approach has the potential to raise awareness of schizophrenia in society, helping others cope with its consequences.

SourceInderscience Publishers·JournalInternational Journal of Advanced Intelligence Paradigms·DateSep 18, 2013

Why parents think your partner isn't good enough

A study published in Evolution & Human Behavior suggests that parents and children's mate preferences conflict due to an evolutionary struggle for resources. This conflict arises when parents distribute resources unevenly among their children, leading them to prioritize a partner who offers less support.

SourceUniversity of Bristol·JournalEvolution and Human Behavior·DateSep 18, 2013

New pediatric infection prevention guidelines for residential facilities

The new guidelines provide standardized guidance and educate staff and volunteers on the principles of infection prevention to reduce the risk of infection for children and families in pediatric residential settings. The guidelines include practices such as standard precautions, health screening, and mandatory vaccination practices.

SourceSociety for Healthcare Epidemiology of America·JournalInfection Control and Hospital Epidemiology·DateSep 18, 2013

True colors: Female squid have 2 ways to switch color, according to a UCSB study

Researchers at UC Santa Barbara discovered that female common market squid possess two distinct systems for reflecting light: Bragg reflection and Mie scattering. These systems allow the squid to switch between transparent and white colors, with the latter appearing as a result of condensation and dehydration of reflectins-based proteins.

SourceUniversity of California - Santa Barbara·JournalJournal of Experimental Biology·DateSep 18, 2013

Higher lead levels may lie just below soil surface

A recent study of hundreds of soil samples from Rhode Island found that surface lead concentrations do not always accurately reflect contamination at depths below the soil surface. The research highlights the need for more comprehensive sampling methods to ensure public safety, particularly in areas with legacy lead-painted water towers.

SourceBrown University·JournalThe Science of The Total Environment·DateSep 18, 2013

Breast conserving treatment with radiotherapy reduces risk of local recurrence

A European Organisation for Research and Treatment of Cancer trial found that adjuvant radiotherapy after local excision reduced the incidence of local recurrences by a factor of two, resulting in an overall lower risk of mastectomy. The study highlights the importance of conducting long-term follow-up.

SourceEuropean Organisation for Research and Treatment of Cancer·JournalJournal of Clinical Oncology·DateSep 18, 2013

Personality differences

A study found that socially dominant red deer individuals have faster heart rates and higher body temperatures during winter, leading to greater body mass loss when food is scarce. In contrast, subordinate individuals are better adapted to survive harsh conditions by reducing their metabolism and conserving energy.

SourceUniversity of Veterinary Medicine -- Vienna·JournalPhysiological and Biochemical Zoology·DateSep 18, 2013

Trial to test prevention of Alzheimer's has begun

A new clinical trial has launched, aiming to prevent Alzheimer's disease by giving new drug treatments before dementia symptoms appear. The trial, led by principal investigator Randall Bateman, is testing two innovative treatments and has been made possible through a unique collaboration of private and public resources.

Different stories play different roles in patients' health decision-making, MU researcher says

A MU researcher found that certain types of stories in patient decision-aids can inform patients' decisions without influencing their choices. Process narratives helped women search for information, while experience narratives improved their ability to envision treatment outcomes and evaluate their decisions more favorably.

SourceUniversity of Missouri-Columbia·JournalPatient Education and Counseling·DateSep 18, 2013

Lifestyle, age linked to diabetes-related protein

A study published in Clinical Chemistry found that SHBG levels are significantly associated with type 2 diabetes risk in women, with age, estrogen therapy, and coffee consumption being key predictors. The research also suggests that adjusting these factors may impact SHBG levels and ultimately diabetes risk.

SourceBrown University·JournalClinical Chemistry·DateSep 18, 2013

Personal genome, public health

The Johns Hopkins Berman Institute of Bioethics has been selected to establish a Center of Excellence to study the ethical, legal, and social implications of genomic research in infectious disease. The center will explore public health genomics in two case studies: pandemic influenza and Hepatitis C.

Stem cell reprogramming made easier

Researchers find removing MBD3 protein increases efficiency of stem cell reprogramming from 1% to 100%, allowing for faster production of cells for medical use. This breakthrough provides a deeper understanding of embryonic development and could advance treatment of various diseases.

Green photon beams more agile than optical tweezers

Romanian scientists have discovered a novel approach for the optical manipulation of macromolecules and biological cells using green photon beams. This method enables precise control over macrostructures, such as biological proteins, outperforming traditional optical tweezers.

SourceSpringer·JournalThe European Physical Journal B·DateSep 18, 2013

E-readers more effective than paper for dyslexic readers

A study published in PLOS ONE found that e-readers with short lines of text increased reading speed and comprehension among some dyslexic high school students. This suggests that the use of short lines on e-readers may help reduce visual distractions and improve focus for individuals with dyslexia.

SourcePLOS·JournalPLOS ONE·DateSep 18, 2013

Inhaled corticosteroids raise pneumonia risk

A University of Alberta research team found that inhaled corticosteroid use was associated with a 90% increase in risk for repeat pneumonia episodes among elderly patients. The study, published in Clinical Infectious Diseases, suggests health professionals should exercise caution when prescribing the drugs to high-risk patients.

SourceUniversity of Alberta·JournalClinical Infectious Diseases·DateSep 18, 2013

Colonoscopy screening every ten years could prevent 40% of colorectal cancers

A large study found that colonoscopy screening can prevent up to 40% of colorectal cancers, with more frequent intervals recommended for those with a personal history of adenoma or family history of colorectal cancer. The study also suggests that sigmoidoscopy alone is insufficient for reducing the incidence of proximal colon cancer.

SourceHarvard T.H. Chan School of Public Health·JournalNew England Journal of Medicine·DateSep 18, 2013

X-ray science taps bug biology to design better materials and reduce pollution

Scientists tap into bug biology to design new materials, such as artificial ligaments and chemical-free pest control methods. The study of caddisfly silk reveals its unique properties, including water resistance and collagen-like behavior. Additionally, researchers use X-ray technology to better understand human muscle mechanics and po...

SourceDOE/Argonne National Laboratory·JournalBiomacromolecules·DateSep 18, 2013

Shining light on neurodegenerative pathway

University of Adelaide researchers have identified a likely molecular pathway that causes neurodegenerative diseases such as Huntington's and Lou Gehrig's. The team found that RNA plays a key role in the development of these diseases, which share similar genetic mutation mechanisms.

SourceUniversity of Adelaide·JournalFrontiers in Molecular Neuroscience·DateSep 18, 2013

Tiny bottles and melting corks: Temperature regulates new delivery system for drugs and fragrances

Researchers have developed a new temperature-regulated delivery system that can release drugs or fragrances in response to body heat, offering greater control over delivery. The system uses microscopic bottle-like structures with melting corks made of fatty acids, which can be tailored to specific temperatures.

SourceGeorgia Institute of Technology·JournalAngewandte Chemie International Edition·DateSep 18, 2013

Early to press means success

A study by James Cook University found that early publication is a key factor in predicting success in scientific research. Women face disadvantages due to language barriers and family responsibilities, hindering their progress. Publishing early and often helps scientists gain a competitive edge and become superstars in their field.

SourceJames Cook University·JournalBioScience·DateSep 18, 2013