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Science News Archive June 2012 - Page 21


Page 21 of 29

Stanford researcher identifies unusual 'altruistic' stem cell behavior with possible link to cancer

A Stanford researcher discovered that certain human embryonic stem cells produce molecules that benefit themselves and nearby cells during stress, exhibiting 'altruistic' behavior. This unique trait is linked to an increase in p53 protein fluctuations, enabling some stem cells to maintain their stemness and secrete antioxidant glutathi...

SourceStanford Medicine·JournalStem Cells·DateJun 11, 2012

Radiation-resistant circuits from mechanical parts

Researchers develop unique technology that keeps devices working in the presence of ionizing radiation, suitable for space applications and control systems, and overcome current radiation-resistant technologies' drawbacks. The new logic gates perform logical operations and can be used to build circuits such as adders and multiplexers.

Scientists correct Amazon water level gauges from space

The University of Bristol scientists developed a technique to calibrate six Amazon gauges using ICESat elevation data, correcting large discrepancies in water levels. This method enables researchers to accurately estimate water levels and river slope, crucial for understanding the exchange of water with floodplains and other processes.

SourceUniversity of Bristol·JournalWater Resources Research·DateJun 11, 2012

Identifying the origins of cervical cancer

A population of cells in the squamo-columnar junction of the cervix have been found to be responsible for most HPV-associated cervical cancers. These cells can become cancerous when infected with HPV, while other cells in the cervix appear to be resistant to infection.

SourceBrigham and Women's Hospital·JournalProceedings of the National Academy of Sciences·DateJun 11, 2012

Are feminism and attachment parenting practices compatible?

A new study by Miriam Liss and Mindy Erchull found that feminist mothers support time-intensive, hands-on parenting practices associated with attachment parenting. The researchers surveyed 431 American women and found that feminists were more likely to endorse attachment parenting than non-feminists.

SourceSpringer·JournalSex Roles·DateJun 11, 2012

Corporate political giving doesn't pay

A new study by Rice University and Long Island University found that corporate political activity is negatively associated with market performance. Firms' political investments also worsen both market and accounting performance.

SourceRice University·JournalStrategic Management Journal·DateJun 11, 2012

A SMART(er) way to track influenza

Brown University engineers create a biochip called SMART that can detect influenza by identifying specific RNA sequences and separating them from other biological debris. The device is small, low-cost, and fast, making it potentially useful in first-aid kits.

SourceBrown University·JournalJournal of Molecular Diagnostics·DateJun 11, 2012

First Nations and low-income children visit emergency departments more often for mental health care

A study found that First Nations children and those from families receiving government subsidies had significantly more visits to emergency departments for mental health crises. These visits were often due to anxiety- or stress-related disorders, emotional or behavioural issues from substance abuse, or unspecific diagnoses.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateJun 11, 2012

Japanese scientists show 'new' liver generation using hepatocyte cell transplantation

Researchers in Japan have successfully generated a new liver system using hepatocyte cell transplantation. The study demonstrated the feasibility of propagating mouse hepatocytes by creating a vascularized platform and uniform hepatocyte sheets, leading to the functionality of the engineered liver system.

Groundbreaking discovery of the cellular origin of cervical cancer

A team of researchers identified a unique set of cells at the squamocolumnar junction that express biomarkers found in all forms of invasive cervical cancers linked to HPV. These cells do not regenerate when excised, which has significant implications for diagnosis, prevention, and treatment of cervical cancer.

SourceAgency for Science, Technology and Research (A*STAR), Singapore·JournalProceedings of the National Academy of Sciences·DateJun 11, 2012

How infection can lead to cancer

A new MIT study examines how chronic inflammation can lead to cancer. The researchers found that the liver and colon respond differently to infection, with neutrophils secreting hypochlorous acid damaging proteins and DNA in the colon. The study could help predict the risk of chronic inflammation and develop ways to halt it.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateJun 11, 2012

Quick, simple test developed to identify patients who will not respond to the painkiller tramadol

Researchers have developed a simple blood test that can identify patients who will not respond to the painkiller tramadol. The test measures the ratio of tramadol's metabolite O-demethyltramadol (ODT) to tramadol itself, allowing doctors to switch non-responding patients to alternative painkillers like morphine.

'Bad' dieting increases cardiovascular disease risk

A 25-year study in Northern Sweden found that a switch to low-carbohydrate diets after reducing fat intake led to an increase in cholesterol levels, indicating a higher cardiovascular risk. Despite initial success in reducing cholesterol levels through dietary changes, the population's BMI continued to rise over time.

SourceBMC (BioMed Central)·JournalNutrition Journal·DateJun 10, 2012

Researchers watch tiny living machines self-assemble

University of Montreal researchers developed a strategy to monitor protein assembly by integrating fluorescent probes throughout the linear protein chain. This approach enables capturing snapshots of protein shape at each stage of assembly, shedding light on how proteins self-assemble into working nanomachines.

SourceUniversity of Montreal·JournalNature Structural & Molecular Biology·DateJun 10, 2012

Positive results from first human clinical trials of a first-generation artificial pancreas system is significant step forward for millions with type 1 diabetes

The Hypoglycemia-Hyperglycemia Minimizer (HHM) System successfully detects blood glucose highs and lows, automatically adjusting insulin delivery to safely manage type 1 diabetes. The study's findings lay the groundwork for further clinical trials and a potential game-changer for millions living with the condition.