Popular Articles

Turner Syndrome Society Of The United States Announces Ambitious Goal To Crush Ignorance Of Turner Syndrome (TS)
The Turner Syndrome Society of the United States (TSSUS) recently concluded its 22nd Annual Conference in Portland, Oregon. The conference drew more than 350 individuals, families, researchers and health care professionals to network and learn about the latest research breakthroughs benefiting women and girls with TS.

Federal Program Cracks Down On Medicare Fraud In Houston
A federal program targets Medicare fraud in the Houston area as news of three cases representing at least $35 million in false claims emerged within the past week. The Houston Chronicle reports on the three cases, noting: "These Houston-area scams alleged in two FBI complaints and one Montgomery County indictment were among six reported nationally in a single week - representing at least $285 million in false billings, records showed. "This is an astounding amount," said Houston"s FBI spokeswoman Pat Villafranca. The $285 million is more than four times the amount stolen during robberies of U.S. banks during all of 2008, she said. This month, Houston became the fourth metropolitan area - joining Miami, Los Angeles and Detroit - to create a ramped-up fraud strike force. It goes by the acronym "HEAT," Health Care Fraud Prevention and Enforcement Action Team."
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Preview Of Tomorrow's Classroom
Of all the qualities that distinguish humans from other species, how we learn is one of the most significant. In the July 17, 2009 issue of the journal Science, researchers who are at the forefront of neuroscience, psychology, education, and machine learning have synthesized a new science of learning that is already reshaping how we think about learning and creating opportunities to re-imagine the classroom for the 21st century.
Public Health

Bridging The Mouse-Human Gap With Engineered Pig Stem Cells

The discovery that adult skin cells can be "reprogrammed" to behave like stem cells has been a major scientific boon, providing a way to tap the potential of embryonic stem cells without the associated ethical quandaries. Now, in a study appearing online in JBC, researchers have created a line of such reprogrammed stem cells from adult pigs. As pigs are large animals with a physiology very similar to humans, this work provides a valuable model to study the therapeutic potential of this new "induced pluripotent stem cell" (iPS) technology. iPS cells have already been developed from both mice and humans. Both systems will help researchers answer many biological and genetic questions about these cells, but still leave a gap before clinical applications can begin. These iPS cells cannot be tested on humans before thorough safety and efficacy trials in animal models, but the size, physiology and short lifespan of mice makes them less than ideal for these trials. Duanqing Pei and colleagues turned to a better pre-clinical model: pigs. These large animals share a remarkably similar biology to humans, as evidenced by their already extensive contributions to medicine, such as using pig insulin to treat diabetes or pig heart valves in transplant surgery. The research group modified the current iPS protocols to successfully generate a line of stem cells from a miniature Tibetan pig (whose smaller size would make breeding and maintenance easier). A biochemical analysis revealed these cells expressed the key proteins that would classify them as "stem cells" and had the ability to differentiate into many other types of cells. Importantly, these pig iPS cells more closely resembled human stem cells than other animals, confirming their value in pre-clinical studies. The researchers believe porcine iPS technology is an emerging and exciting field that should progress quickly and lead to many applications. Notes: "Generation of Induced Pluripotent Stem Cell Lines from Tibetan Miniature Pig" by Miguel Angel Esteban, Jianyong Xu, Jiayin Yang, Meixiu Peng, Dajiang Qin, Wen Li, Zhuoxin Jiang, Jiekai Chen, Kang Deng, Mei Zhong, Jinglei Cai, Liangxue Lai and Duanqing Pei. Corresponding Author: Duanqing Pei, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, China. Article Link: http://www.jbc.org/cgi/content/abstract/M109.008938v2 Nick Zagorski American Society for Biochemistry and Molecular Biology


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