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Science News Archive April 2008 - Page 16


Page 16 of 22

Omega-3's no help for Crohn's sufferers

A large-scale study published in Journal of the American Medical Association finds that omega-3 fatty acids offer no benefit for preventing relapse in Crohn's disease. However, patients who took omega-3 supplements experienced significantly lower triglyceride levels, a risk factor for heart disease.

SourceUniversity of Western Ontario·JournalJournal of the American Medical Association·DateApr 8, 2008

Why the dating game is taken at face value

A study of 700 participants found that young men and women look for complete opposites when it comes to relationships, with men preferring open women and women preferring men with potential for long-term relationships. Facial features such as squarer jaws and smaller eyes are associated with masculinity.

SourceDurham University·JournalEvolution and Human Behavior·DateApr 8, 2008

At home on a crab, with new evolutionary neighbors

Researchers successfully relocated the elusive Drosophila endobranchia species on land-crabs in Grand Cayman, shedding light on its evolutionary history. The study revealed that these flies are closely related to other Caribbean crab flies, suggesting a unique adaptation to their unusual breeding habitat.

SourcePLOS·JournalPLOS ONE·DateApr 8, 2008

'Connecting the dots' in path that leads to fat

Researchers have identified KLF4 as a key player in the early stages of fat formation, connecting the dots between molecular processes that lead to adipogenesis. By understanding how KLF4 influences C/EBPß activity and drives fat production, scientists may be able to intervene and alter fat development.

SourceCell Press·JournalCell Metabolism·DateApr 8, 2008

DVDs and CD-ROMs that thwart global warming

Researchers have discovered innovative ways to create polycarbonate plastics from carbon dioxide, which could lead to the production of more affordable, safer, and environmentally friendly products. The new process has the potential to significantly reduce greenhouse gas emissions by trapping CO2 in plastics.

Food biotechnology: real world challenges

A discussion-based scenario was shared by Lori Unruh Snyder to teach critical thinking about food biotechnology. The exercise helped students understand the conflict between those affected and policymakers, as well as regional opinions impacting the world. By debating pros and cons of biotechnology globally, students enhanced their cri...

SourceAmerican Society of Agronomy·JournalJournal of Natural Resources and Life Sciences Education·DateApr 8, 2008

Other highlights in the April 8 JNCI

Recent studies suggest that preoperative chemotherapy can be effective in early breast cancer treatment, but individual responses may vary. Additionally, a case-control study found no increased risk of cancer among frequent blood donors. Furthermore, researchers have identified a novel mechanism to overcome resistance to targeted thera...

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateApr 8, 2008

Marijuana increases alcohol toxicity in young rats

A new study using rats found that THC combined with mildly intoxicating doses of alcohol induced widespread nerve cell death in the brain. The study also showed that THC enhanced the neurotoxic effect of other substances, including phenobarbital and MK-801.

SourceWiley·JournalAnnals of Neurology·DateApr 8, 2008

Too many gene copies stimulate tumor cell growth

Researchers discovered that duplicated regions of DNA containing the BRAF gene lead to increased tumor growth. Targeting the MAPK pathway, which is downstream of BRAF, may provide a new approach for treating individuals with low-grade astrocytomas.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateApr 8, 2008

Sea salt worsens coastal air pollution: study

A new study finds that sea salt and urban/shipping pollution combine to create a highly toxic mixture of ground-level ozone and pollutants in coastal areas. Researchers detected unusually high levels of nitryl chloride, a key contributor to air pollution, where these two pollutants meet in the southeastern US.

SourceUniversity of Calgary·JournalNature Geoscience·DateApr 8, 2008

Increasing positive experiences decreases depression symptoms in patients with multiple sclerosis

Researchers found that a higher number of positive experiences is associated with fewer symptoms of depression and better quality of life in people with MS. The study suggests incorporating daily activities like thanking someone or exercising can limit the risks and costs of medical treatments for depression.

SourceUniversity of Missouri-Columbia·JournalJournal of Holistic Nursing·DateApr 8, 2008

Sleep problems common in children with ADHD

Sleep problems are extremely common in children with ADHD, associated with poorer child psychosocial quality of life and caregiver mental health. The prevalence of mild to moderate sleep problems was found to be significant, with difficulties falling asleep and resisting bedtime being common symptoms.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateApr 7, 2008

Cosmic engines surprise XMM-Newton

Researchers used XMM-Newton to observe four polar BAL quasars, finding two of them emitted more X-rays than anticipated, suggesting a lack of absorbing gas. This discovery may indicate that BAL quasars are more complex than initially thought, with both equatorial and polar outflows potentially occurring simultaneously.

SourceEuropean Space Agency·JournalThe Astrophysical Journal Letters·DateApr 7, 2008

Carnegie Mellon's Nadine Aubry, colleague Pushpendra Singh develop new model

Carnegie Mellon University researchers have developed a new manufacturing strategy that can improve the efficiency of drug delivery patches, solar cells, and high-performance computing by controlling particle distribution with electric fields. The method offers flexibility, precision, and simplicity, revolutionizing two-dimensional nan...

SourceCarnegie Mellon University·JournalProceedings of the National Academy of Sciences·DateApr 7, 2008

Researchers 'see' structure of open nicotinic acetylcholine ion channels

Researchers at the University of Illinois have mapped the interior of a key component of the relay system that allows acetylcholine to transmit its message. The muscle nicotinic receptor, a neurotransmitter-gated ion channel, responds to acetylcholine by opening its gate and allowing positively charged ions to flow into the cell.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalNature Structural & Molecular Biology·DateApr 7, 2008