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Science News for December 10, 2007


Karen Beemon wins the 2007 Retrovirology Prize

Dr. Karen Beemon has made significant contributions to understanding how retroviruses transform cells through aberrant phosphorylation of cellular proteins. She was awarded the 2007 Retrovirology Prize for her work, recognized by the journal's Editorial Board and supported by the Ming K. Jeang Foundation.

SourceBMC (BioMed Central)·JournalRetrovirology·DateDec 10, 2007

Children with sickle cell disease, silent strokes show some relief with blood transfusions

A Phase II study found that blood transfusion therapy helped shrink brain lesions caused by silent strokes in children with sickle cell disease. The therapy eliminated one lesion completely and showed no new silent strokes after two years. Researchers hope to preserve cognitive function in these children through prolonged transfusions.

SourceWashU Medicine·JournalPediatric Blood & Cancer·DateDec 10, 2007

Are humans evolving faster?

A new study suggests humans are evolving rapidly, with genetic differences accelerating on a continental scale. The pace of change has accelerated in the last 40,000 years, especially since the end of the Ice Age, leading to increased divergence among human populations.

SourceUniversity of Utah·JournalProceedings of the National Academy of Sciences·DateDec 10, 2007

Is there a developmental component to the risk for depression?

Researchers identified six courses of mental health, with poorer outcomes associated with smaller birth weight and delayed developmental milestones. The study suggests a 'fetal programming' model for depression and anxiety, where prenatal stress may result in permanent maladaptive changes to the developing fetal brain.

SourceElsevier·JournalBiological Psychiatry·DateDec 10, 2007

RAND study finds evidence disease management programs

A RAND Corporation study analyzed research on disease management programs for six chronic conditions, finding consistent evidence that these programs improve healthcare quality and patient-reported quality of life. However, the study found little to no evidence of cost savings, highlighting the need for further research.

SourceRAND Corporation·JournalThe American Journal of Managed Care·DateDec 10, 2007

Keeping at-risk cells from developing cancer

Scientists at Johns Hopkins Medicine discovered that epigenetic changes in gene activation can lead to cancer development, and found a way to block the 'addiction' to growth factors, preventing cancer growth. The study shows that blocking this response can greatly reduce precancerous lesions in animals.

SourceJohns Hopkins Medicine·JournalProceedings of the National Academy of Sciences·DateDec 10, 2007

Silencing small but mighty cancer inhibitors

A research team has discovered that the Myc protein can suppress the production of at least 13 microRNAs in cancer cells. Reintroducing these repressed miRNAs into Myc-containing cancer cells suppressed tumor growth in mice, suggesting a potential gene therapy approach for certain cancers.

SourceJohns Hopkins Medicine·JournalNature Genetics·DateDec 10, 2007

Immigrant patients less likely to report family history of cancer

A new study found that immigrant patients in the US are less likely to report a family history of cancer, which may impact access to cancer prevention and screening services. The study's findings suggest that immigrants' cultural norms and communication barriers may inhibit reporting of family health histories.

SourceWiley·JournalCancer·DateDec 10, 2007

Researchers led by Penn vet uncover the delicate protein balance behind the immune system response

A team of researchers from the University of Pennsylvania School of Veterinary Medicine has identified the pathways that lead to the production of Interleukin 10 (IL-10), a major anti-inflammatory factor. Modulating messenger molecules like IL-27 and IL-6 could increase IL-10 concentrations, tempering overactive immune responses.

SourceUniversity of Pennsylvania·JournalNature Immunology·DateDec 10, 2007

To catch a panda

A MSU Ph.D. candidate is tracking up to four wild pandas in the Sichuan Province of China using advanced global positioning systems to map their habitat preferences, providing crucial data for conservation efforts.

Cancer risks of eating red and processed meat

A new study published in PLoS Medicine found that consuming high amounts of red and processed meats increases the risk of developing bowel and lung cancer. The research, conducted by Amanda Cross and colleagues, analyzed data from a large US diet and health study involving nearly half a million men and women aged 50-71.

SourcePLOS·JournalPLOS Medicine·DateDec 10, 2007

Employees with workplace flexibility have healthier lifestyle habits

A study by Joseph G. Grzywacz found that employees who perceive flexibility in their work lives have healthier lifestyles and are more likely to start positive behaviors. The study analyzed data from a large multinational pharmaceutical company, which recognized its commitment to flexibility as a family-friendly employer.

SourceAtrium Health Wake Forest Baptist·JournalJournal of Occupational and Environmental Medicine·DateDec 10, 2007

Substance abuse in Somali combatants; and more

A study in PLOS Medicine found that Somali combatants' excessive use of khat, a stimulant with amphetamine-like effects, is prevalent across southern and central Somalia. The study also revealed high levels of cannabis and other drug use among combatants, posing significant challenges for post-conflict reintegration programs.

SourcePLOS·JournalPLOS Medicine·DateDec 10, 2007

Scientists develop new measure of 'socioclimactic' risk

A new analysis provides quantitative information on socioclimatic risk for each nation, integrating global climate models and socioeconomic indicators of poverty, wealth, and population. Countries face high exposure in at least one category, with major greenhouse gas-emitting nations like China, India, and the US facing substantial exp...

SourcePurdue University·JournalProceedings of the National Academy of Sciences·DateDec 10, 2007

Psychiatrists: Least religious but most interested in patients' religion

A recent study published in the American Journal of Psychiatry found that psychiatrists are less religious than other physicians but more comfortable addressing patients' spiritual concerns. Psychiatrists are twice as likely to discuss spiritual issues with patients and more likely to encourage patients in their own religious ideas.

SourceUniversity of Chicago Medical Center·JournalAmerican Journal of Psychiatry·DateDec 10, 2007

Genome study places modern humans in the evolutionary fast lane

A recent genome study found that positive selection has occurred at a rate roughly 100 times higher in the past 5,000 years compared to other periods of human evolution. The study, led by University of Wisconsin-Madison anthropologist John Hawks, identified 1,800 genes with recent genetic changes, driven by major cultural shifts such a...

SourceUniversity of Wisconsin-Madison·JournalProceedings of the National Academy of Sciences·DateDec 10, 2007