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Science News for January 19, 2009


Research breakthrough targets genetic diseases

Researchers have discovered a plant model that mimics human DNA patterns, allowing for the study of genetic diseases such as Huntington's and Fragile X syndrome over multiple generations. This breakthrough could pave the way for better understanding and potential treatments for these debilitating conditions.

SourceResearch Australia·JournalScience·DateJan 19, 2009

Our microbes, ourselves

Researchers found significant differences in microbial composition among obese patients, gastric bypass surgery subjects, and normal-weight individuals. The study suggests that the gut microbiome plays a key role in energy harvesting, making people more susceptible to obesity.

SourceArizona State University·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009

Language driven by culture, not biology

Researchers modelled gene evolution alongside language development, concluding that genetic adaptation to language is unlikely due to rapid cultural change. The study suggests that human language has evolved primarily through cultural conventions rather than biological adaptation.

SourceUniversity College London·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009

JCI online early table of contents: Jan. 19, 2009

A recent study by Oregon Health and Science University and the University of Colorado School of Medicine found that fetal heath is affected by mother's diet, with high-fat diets increasing the risk of developing NAFLD and obesity-related diseases in offspring. Researchers suggest a healthy maternal diet is crucial for preventing these ...

SourceJCI Journals·JournalJournal of Clinical Investigation·DateJan 19, 2009

Fetal health affected by mother's diet

A study found that a mother's high-fat diet during pregnancy can increase the risk of obesity-related diseases in her offspring. Reverting to a low-fat diet after a high-fat diet period reduced these risks.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateJan 19, 2009

New criteria for measuring tumor size and progression will help ease workloads in clinical trials

The revised RECIST (Response Evaluation Criteria in Solid Tumours) guidelines aim to ease workloads in clinical trials by reducing the number of lesions to be assessed and providing new guidance on tumor burden measurement. The updated criteria also refine disease progression definitions and incorporate modern imaging techniques.

SourceECCO-the European CanCer Organisation·JournalEuropean Journal of Cancer·DateJan 19, 2009

Scientists: Earthquakes, El Ninos fatal to earliest civilization in Americas

The Supe people's advanced stone pyramid temples and maritime farming community were devastated by a series of earthquakes and flooding caused by El Nino events, rendering their fertile fields and bays uninhabitable. The region's collapse serves as a cautionary tale for modern times, highlighting the risks of environmental vulnerability.

SourceUniversity of Florida·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009

Food choices and location influence California sea otter exposure to disease

Research reveals that California sea otters living in coastal areas with limited resources are more susceptible to diseases caused by parasites. The study found that diet diversity among individual otters can lead to higher infection rates, highlighting the importance of habitat quality for maintaining healthy populations.

SourceU.S. Geological Survey·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009

The more promiscuous the female, the speedier the sperm

Promiscuous female African cichlids stimulate males to produce larger and speedier sperm, a strategy to outcompete rival suitors for reproduction. Researchers used computer simulations to show that this evolutionary adaptation occurs after species transition to more promiscuous mating behaviors.

SourceMcMaster University·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009

Space mission for worms

Researchers are sending worms to the International Space Station to study muscle atrophy in zero gravity. The goal is to understand why astronauts experience dramatic muscle loss and potentially develop new treatments for muscle wasting diseases.

MRSA head and neck infections increase among children

Rates of antibiotic-resistant head and neck infections increased significantly in pediatric patients nationwide between 2001 and 2006. MRSA rates rose from 11.8 percent to 28.1 percent during this period, with the highest proportion found in ear infections.

SourceJAMA Network·JournalArchives of Otolaryngology - Head and Neck Surgery·DateJan 19, 2009

Scientific sub makes deep-sea discoveries

A four-week expedition to explore the deep ocean south-west of Tasmania has revealed new species of animals, including a bizarre carnivorous sea squirt and giant sponges. The survey also found vast fields of fossil corals dated to over 10,000 years old, providing ancient climate data for models of regional and global climate change.

Penn study: Breast cancer survivors call for more 'survivorship care' from primary care physicians

A new study found that breast cancer survivors are unsatisfied with the post-cancer care they receive from their primary care physicians, highlighting the need for more coordinated care. Patients advocate for educational interventions and specialized clinics to address late effects of treatments and prevent disease recurrences.

SourceUniversity of Pennsylvania School of Medicine·JournalJournal of Clinical Oncology·DateJan 19, 2009

'Warrior gene' predicts aggressive behavior after provocation

Researchers discover that individuals with low-activity MAOA gene display higher levels of aggression in response to provocation, particularly when faced with significant financial loss. The study suggests genetic influences on aggression and punishment behavior, questioning the altruistic punisher theory.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009

Infra red spotlights crystal growth

Engineers at the University of Leeds developed a technique using infra-red spectroscopy to analyze chemical processes, enabling real-time monitoring of supersaturation levels required for crystallization. This can help predict optimum crystal structure conditions and improve pharmaceutical manufacturing efficiency.

SourceUniversity of Leeds·JournalCrystal Growth & Design·DateJan 19, 2009

Embargoed news from Annals of Internal Medicine

Bariatric surgery rapidly improves insulin action, prompting adjustments to diabetic regimens. Genetic testing for heart disease is questioned as a reliable predictor of cardiovascular events, with traditional risk factors proving sufficient. Researchers advocate for increased clinical vigilance in methadone patients to reduce sudden c...

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateJan 19, 2009

Infidelity produces faster sperm

A study by Uppsala University researchers found that females' promiscuity leads to males producing faster and larger sperms. The competition among sperms influences various characteristics, including size and speed.

SourceUppsala University·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009

Study compares 2 nonsurgical treatments for reflux disease

Two non-surgical treatments for gastroesophageal reflux disease (GERD) have been found to be effective in reducing medication use and improving symptoms, according to a recent study. Radiofrequency therapy appears effective for reducing heartburn and cough, while full-thickness plication may be beneficial for patients with regurgitation.

SourceJAMA Network·JournalArchives of Surgery·DateJan 19, 2009

Collaborative learning across multiple institutions

A collaborative research course taught at one university led to a global collaboration among faculty members from three universities, resulting in significant increases in communication skills and subject matter knowledge. Students reported improved understanding of how communication fits into collaborative problem-solving and anticipa...

SourceAmerican Society of Agronomy·JournalJournal of Natural Resources and Life Sciences Education·DateJan 19, 2009

'Smart' fridges stay cool by talking to each other

Researchers at CSIRO Australia have developed smart fridges that can negotiate the most energy-efficient way to keep food cold, reducing electricity consumption and greenhouse gas emissions. The fridges work as a network, sharing energy provided by renewable sources like solar panels or wind turbines.

Predicting politics: Professors model prediction markets

A Northwestern University team created a model of how prices fluctuate in political prediction markets, revealing that partisan feeling can significantly impact trading. The researchers found that traders' emotions played a crucial role in the market's behavior, especially during the 2000 presidential election. By understanding these d...

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateJan 19, 2009