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Science News Archive March 2010 - Page 8


Page 8 of 27

The largest Last Supper

A study analyzed 52 paintings of the Last Supper and found that portion size, plate size, and bread size increased dramatically over the past thousand years. The main courses depicted grew by 69%, while plate sizes increased by 66% and bread sizes by 23%.

SourceCornell Food & Brand Lab·JournalInternational Journal of Obesity·DateMar 23, 2010

Men and women respond differently to stress

A University of Montreal study found that men and women respond differently to stress, with high blood pressure and heart rate in women who are more defensive. Older men with low defensive reactions have higher cardiovascular rates. The study suggests that socialization and maintaining self-esteem contribute to these responses.

SourceUniversity of Montreal·JournalPsychophysiology·DateMar 23, 2010

Keeping queso fresco fresh

Researchers found that queso fresco can retain its characteristic texture for two months when stored at 39 degrees Fahrenheit, but breaks down at 50 degrees F. The study suggests lowering the supermarket display case temperature to improve shelf life and quality of this popular Mexican cheese.

Trans fats linked to increased endometriosis risk and omega-3-rich food linked to lower risk

A study of 70,709 American nurses found that consuming long-chain Omega-3 fatty acids may reduce the risk of endometriosis by 22%, while eating trans fats increases the risk by 48%. Dietary changes, such as reducing trans fats and increasing Omega-3 oils, may be a useful strategy for preventing or alleviating endometriosis symptoms.

The longevity revolution

A new study in the journal Political Insight suggests that older adults can play a pivotal role in their communities through dedicated volunteering and participation. The researchers argue that promoting lifelong learning and community action among older people can help them feel less overwhelmed and isolated, and may even lead to bett...

SourceWiley·JournalPolitical Insight·DateMar 23, 2010

Indian spice may delay liver damage and cirrhosis

Curcumin reduces bile duct blockage, liver cell damage, and scarring in mice with chronic liver inflammation. The spice interferes with chemical signalling pathways involved in the inflammatory process, offering a promising alternative to current treatments like ursodeoxycholic acid.

SourceBMJ Group·JournalGut·DateMar 23, 2010

Optimism boosts the immune system

A study published in Psychological Science found that law students' optimism about their future affected their immune response, with more optimistic students showing stronger immune responses. The researchers measured the students' immune systems over six months and found a significant correlation between optimism and immune strength.

SourceAssociation for Psychological Science·JournalPsychological Science·DateMar 23, 2010

A lab-on-a-chip with moveable channels

UC engineering researchers have created a paradigm shift in microfluidics by developing a lab-on-a-chip with programmable microfluidic systems. This innovation enables the reconfiguration of microchannel structure as needed for performing various biomedical assays, such as DNA analysis and immunoassays.

SourceUniversity of Cincinnati·JournalLab on a Chip·DateMar 23, 2010

Fearless fish forget their phobias

Researchers taught goldfish to associate a light flash with a shock, inducing fear. However, fish injected with lidocaine in the cerebellum showed no fear and returned to normal behavior after the anesthesia wore off. This study suggests that understanding brain processes related to fear may lead to human phobia cures.

SourceBMC (BioMed Central)·JournalBehavioral and Brain Functions·DateMar 22, 2010

State tax incentives for filmmakers has opposite desired effect

A study by Susan Christopherson and Ned Rightor found that film subsidy programs reduce finite state funds, benefit few citizens, and foster a race-to-the-bottom mentality. The researchers argue that policy makers need to carefully evaluate the methods used to rationalize public expenditures on incentives for economic development.

SourceSAGE·JournalJournal of Planning Education and Research·DateMar 22, 2010

Success rates for organ transplants are increasing, but organ donations are decreasing, study shows

A new study by Cedars-Sinai Medical Center found that the number of living donor organs available for transplant has declined over the past five years, while the number of deceased donors decreased in 2008. This decline has resulted in a widening gap between the number of organs available and the number of patients awaiting a donor organ.

SourceCedars-Sinai Medical Center·JournalAmerican Journal of Transplantation·DateMar 22, 2010

TWEAK triggers atrophy of disused muscle

A study in JCB identifies TWEAK as a key trigger for muscle breakdown in disused skeletal muscle. Blocking this pathway could prevent muscle loss in immobilized patients. Inhibiting TWEAK with an antibody was sufficient to block muscle breakdown, suggesting its potential as a therapeutic target.

SourceRockefeller University Press·JournalJournal of Cell Biology·DateMar 22, 2010