Add BrightSurf on Google Email

Science News Archive October 2009 - Page 18


Page 18 of 27

JCI online early table of contents: Oct. 12, 2009

Researchers have identified a counterbalancing role for the phosphorylation of alpha-synuclein amino acid 125 in nerve cell protection against alpha-synuclein-mediated toxicity. Higher levels of this phosphorylated form were found to decrease toxic soluble oligomers and protect against Parkinson's disease symptoms.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 12, 2009

Genetics of patterning the cerebral cortex

Researchers at Salk Institute discover critical period during which Lhx2 decides progenitors' regional identity, determining the development of distinct cortical regions. This knowledge may help understand neurodegenerative disorders and specify stem cells to repair brain damage.

SourceSalk Institute·JournalNature Neuroscience·DateOct 12, 2009

Singapore scientists discover widely sought molecular key to understanding p53 tumor suppressor gene

Researchers at Singapore Immunology Network (SIgN) have identified the molecular key to understanding the p53 tumor suppressor gene's function. The discovery reveals how p53 regulates genes by recognizing specific sequences of nucleotides in DNA, providing a missing piece to this complex biological process.

Teen smoking-cessation trial first to achieve significant quit rates

Researchers at Fred Hutchinson Cancer Center developed a phone-based counseling intervention that recruited and retained adolescent smokers, significantly impacting six-month continuous quitting rates. The study found 21.8% of smokers in the counseling group achieved continuous quitting after completing nine personalized calls.

SourceFred Hutchinson Cancer Center·JournalJNCI Journal of the National Cancer Institute·DateOct 12, 2009

Loss of tumor supressor gene essential to transforming benign nerve tumors into cancers

Researchers at UCLA's Jonsson Comprehensive Cancer Center found that the loss of PTEN tumor suppressor gene plays a central role in transforming benign neurofibromas into malignant and deadly sarcomas. The study could lead to new therapies targeting cell signaling pathways regulated by PTEN.

SourceUniversity of California - Los Angeles·JournalProceedings of the National Academy of Sciences·DateOct 12, 2009

First-of-kind study shows model can be used to rate courtroom psychiatric experts performance

A new study from the University of Cincinnati College of Law has shown that a group of psychiatrists who evaluated mental competence from case files performed at a strikingly high level of accuracy. In an average of 29 out of every 30 cases, the psychiatrists could distinguish competent defendants from incompetent defendants.

SourceUniversity of Cincinnati·JournalLaw and Human Behavior·DateOct 12, 2009

Setting sail in an ecological 'Earthship'

The article discusses the potential of sustainable Earthship design in reducing environmental impact. Researchers argue that these self-sufficient homes can provide long-term shelter and financial independence, but still rely on technological systems for resource production.

SourceInderscience Publishers·JournalInternational Journal of Sustainable Design·DateOct 12, 2009

Healthy neighborhoods may be associated with lower diabetes risk

A study of 2,285 adults found that neighborhoods with better physical activity resources and access to healthy foods were associated with a 38% lower incidence of type 2 diabetes. The authors conclude that modifying environmental factors may be a key step in arresting the rising epidemic of type 2 diabetes.

SourceJAMA Network·JournalArchives of Internal Medicine·DateOct 12, 2009

UNC study: Children can greatly reduce abdominal pain by using their imagination

A UNC study found that using audio recordings of guided imagery at home in addition to standard medical treatment can significantly reduce abdominal pain in children. The benefits were maintained for six months after treatment ended, highlighting the potential of self-administered treatment as a cost-effective and accessible option.

An action plan for Zimbabwe

The decline in Zimbabwe's health indicators over the past three decades is attributed to high HIV/AIDS prevalence, poor governance, and economic policies. To address this, the authors propose a new healthcare recovery plan prioritizing essential services like emergency obstetric care and training specialist mid-level workers.

SourceThe Lancet_DELETED·JournalThe Lancet·DateOct 12, 2009

Blood vessel builders

Researchers at Case Western Reserve University are developing a novel approach to building vascular networks in engineered tissues using custom-designed synthetic molecules and embryonic stem cells. Their goal is to produce networks that can grow and maintain themselves like natural blood vessels, paving the way for improved human lives.

Growing geodesic carbon nanodomes

Graphene nanodomes, formed by concentric rings of carbon atoms, offer new insight into graphene growth and potential methods for assembling components of graphene-based computer circuits. The discovery enables varying the size of the carbon domes from a few nanometers to hundreds of nanometers across.

SourceAmerican Physical Society·JournalPhysical Review Letters·DateOct 12, 2009

Silence of the genes

Berkeley researchers have imaged the human RISC-loading complex for the first time, proposing a model of how small RNA molecules target specific messenger RNAs for silencing and/or destruction. This work provides new insights into RNA interference mechanisms and has significant implications for gene regulation in humans.

SourceDOE/Lawrence Berkeley National Laboratory·JournalNature Structural & Molecular Biology·DateOct 12, 2009

Impaired fetal growth increases risk of asthma

A new study published in Pediatrics reveals that children born with low birth weight are at a higher risk of developing asthma later in life. The study, which analyzed data from 10,918 twins, suggests that impaired fetal growth affects lung development and contributes to the development of asthma.

SourceKarolinska Institutet·JournalPEDIATRICS·DateOct 12, 2009

Self-sacrifice among strangers has more to do with nurture than nature

Researchers found that culturally learned behaviors are a better explanation for altruism than genetics. Altruism was more common in neighboring social groups with similar cultural practices, suggesting a gene-culture coevolution of prosocial propensities. This challenges traditional views on the role of nature versus nurture in shapin...

SourceU.S. National Science Foundation·JournalProceedings of the National Academy of Sciences·DateOct 12, 2009

Radio waves 'see' through walls

A wireless network of radio transmitters can track people moving behind solid walls, according to a new study. The system uses radio tomographic imaging (RTI) and has the potential to help law enforcement, rescue operations, and retail marketing.

SourceUniversity of Utah·JournalIEEE Transactions on Mobile Computing·DateOct 11, 2009

Blood counts are clues to human disease

A genome-wide association study identified 22 regions of the human genome associated with eight blood measurements, including haemoglobin concentration and platelet counts. These genetic variants are linked to increased risk of heart disease, coeliac disease, and type 1 diabetes in European populations.

SourceWellcome Trust Sanger Institute·JournalNature Genetics·DateOct 11, 2009