Add BrightSurf on Google Email

Science News Archive March 2010 - Page 20


Page 20 of 27

JCI online early table of contents: March 8, 2010

Recent studies suggest that triggering TLR7 and TLR8 can actually increase tumor cell survival, while a new soluble factor IFN-beta represses tumor growth by limiting blood vessel formation. Additionally, microRNA-31 has been identified as an oncogenic factor promoting lung cancer through the repression of specific tumor suppressor genes.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 8, 2010

The influence of a romantic breakup on self-concept

A recent study found that romantic breakups can lead to reduced self-concept clarity and increased emotional distress. Individuals experience changes in their selves, feeling less clear and smaller after the loss of a partner.

SourceSAGE·JournalPersonality and Social Psychology Bulletin·DateMar 8, 2010

'Pay it forward' pays off

Researchers from UC San Diego and Harvard found that cooperative behavior is contagious and spreads through a social network. When people benefit from kindness, they are more likely to help others, creating a cascade of cooperation.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·DateMar 8, 2010

NYU, U. of Wurzburg scientists shed new light on how retina's hardware is used in color vision

Researchers at NYU and U. of Würzburg identified how photoreceptor cells in the fruit fly Drosophila use distinct spectral sensitivities for color vision and motion detection. Flies with impaired R7 or R8 photoreceptors showed preferences for specific colors, revealing separate channels for color and motion.

SourceNew York University·JournalProceedings of the National Academy of Sciences·DateMar 8, 2010

Unhealthy foods become less popular with increasing costs

A study of 5,115 young adults found that increased prices for unhealthy foods like soda and pizza led to decreased calorie consumption and weight loss. The researchers estimate that an 18% tax on these foods could result in a decline of roughly 56 calories per person per day.

SourceJAMA Network·JournalArchives of Internal Medicine·DateMar 8, 2010

Editorial: Eye cancer research becomes a collaborative pursuit

Research on ocular cancer has expanded to involve well-designed, multi-center collaborative studies that help continue the advancement of knowledge in the field. These studies allow for large patient recruitment, foster field-wide agreement on terminology, and provide cost savings by avoiding duplication of efforts.

SourceJAMA Network·JournalArchives of Ophthalmology·DateMar 8, 2010

Cool model for a hot planet

Binghamton University economist Zili Yang's book explores how game theory and integrated assessment models can help mitigate climate change by promoting cooperation among nations. His research argues that climate agreements should be fair and equitable, with industrialized nations contributing their share to address global warming.

How to see through opaque materials

Scientists at ESCPI conducted an experiment to focus light through opaque materials and detect objects hidden behind them. They used a numerical model called a transmission matrix to tailor a beam of light specifically to pass through the material and focus on the other side.

SourceAmerican Physical Society·JournalPhysical Review Letters·DateMar 8, 2010

1-page questionnaire is effective screening tool for common psychiatric disorders

A new 27-item questionnaire, the M-3 checklist, is a valid and effective tool to help primary care doctors screen patients for four common psychiatric illnesses. The checklist was developed by a team of mental health practitioners and experts and was found to be effective in screening for any mood or anxiety disorder 83% of the time.

SourceUniversity of North Carolina Health Care·JournalThe Annals of Family Medicine·DateMar 8, 2010

Unhappy customers: Everyone has a right to complain, and does

A new study found that consumers from lower-income backgrounds and rural areas are less likely to return products for refunds or exchanges, but this is not due to their socioeconomic status. The researchers recommend supporting consumer empowerment at the public policy level to encourage assertive action against companies.

SourceWiley·JournalJournal of Consumer Affairs·DateMar 8, 2010

Inadequate surgical provision in African district general hospitals

Two papers investigate surgical provision in eight African district hospitals, revealing low levels of care, few beds, and no specialist surgeons or anaesthetists. The findings highlight a shocking lack of surgical capacity in these settings, with significant implications for healthcare planning in Africa.

SourcePLOS·JournalPLOS Medicine·DateMar 8, 2010

Warning sign for potential anti-cancer approach

A new study suggests that stimulating human lung cancer cells with TLR7 or TLR8 agonists can lead to increased tumor cell survival and resistance to chemotherapy. This approach is being investigated as an adjuvant for anticancer immunotherapies, but caution should be exercised due to these potential risks.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 8, 2010

Deceptive model

Researchers found that human and mouse embryonic stem cells have distinct responses to growth factors, rendering animal models less reliable for preliminary tests. Human ES cells will remain essential for stem cell research due to their superior performance in tissue differentiation.

SourceMax-Planck-Gesellschaft·JournalCell Stem Cell·DateMar 8, 2010

Obesity as protection against metabolic syndrome, not its cause

According to Roger Unger, obesity is the body's way of storing lipids in fat tissue to protect other organs. This protective mechanism fails when the body's fat tissue can't handle excess calories, leading to metabolic syndrome. The rise of leptin resistance also plays a key role in this process.

SourceCell Press·JournalTrends in Endocrinology and Metabolism·DateMar 8, 2010

Violent crime 'race gap' narrows, but persists in US

A new study by the University of Maryland and other institutions found that the racial gap in violent crime has narrowed, but still exists, particularly in communities with higher rates of divorce, unemployment, and drug use. The study analyzed data from 80 US cities between 1960 and 2000 and found that the gap most pronounced in these...

SourceUniversity of Maryland·JournalAmerican Sociological Review·DateMar 8, 2010

BUSM researchers identify new syndrome

Researchers from BUSM identified a new syndrome, SHAKE (Supplement-associated Hyperammonemia After C(K)achetic Episode), characterized by altered mental status and difficulty walking. The condition can be prevented by discontinuing high protein dietary supplements in patients with poor eating habits.

SourceBoston University School of Medicine·JournalArchives of Internal Medicine·DateMar 8, 2010

New approach to immune cell analysis seen as first step to better distinguish health and disease

A new mathematical approach, csSAM, allows for accurate and quick characterization of immune cells in human blood, enabling the distinction between health and disease states. This breakthrough method identifies changes in gene expression patterns, overcoming previous obstacles such as cell separation and variation in cell proportions.

Physician-pharmacist collaborative care plans have little impact on clinical outcomes

A study published in Canadian Medical Association Journal found that collaborative care plans involving physicians and pharmacists have little clinical impact on managing lipid control in patients with high cholesterol. The study suggests that this approach may be effective for lifestyle changes, but not for significant clinical outcomes.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateMar 8, 2010

Articles highlight challenges, progress in nervous system cancers

Recent clinical and scientific advancements in nervous system cancers have improved our understanding of molecular changes and new therapies for patients. The March issue of Archives of Neurology features articles on various topics, including increased melanoma risk among Parkinson's disease patients and new insights into glioma risk.

SourceJAMA Network·JournalArchives of Neurology·DateMar 8, 2010