21 hours ago Johns Hopkins researchers have discovered an unexpected phenomenon in the organs that produce sperm in fruit flies: When a certain kind of stem cell is killed off experimentally, another group of non-stem cells can come out of retirement to replace them. The discovery sheds light on the tiny "environments" that stem cells occupy in animal bodies and may help explain how stem cells in tumors replenish themselves, the researchers report in the May 8 issue of the journal Cell Reports. Damage of the kind duplicated in the laboratory occurs naturally after exposure to radiation and perhaps also after ingestion of toxic chemicals such as those used in chemotherapy. The research group, led by Erika Matunis, Ph.D., a professor of cell biology at the Johns Hopkins University School of Medicine, has been using the fruit fly as a model living system in which to study stem cells in their natural state. Most stem cell research is done on cells grown in the laboratory, but in real life, stem cells reside in tissues, where they are sequestered in tiny spaces known as niches. Adult stem cells keep dividing throughout life to make various kinds of cells, like new blood … Continue reading →

WEST HARTFORD, Conn., April 17, 2014 /PRNewswire-iReach/ -- Global Information Inc. announces the addition of a new market research report "Nanomedicine Market (Neurology, Cardiovascular, Anti-inflammatory, Anti-infective, and Oncology Applications) - Global Industry Analysis, Size, Share,Growth, Trends and Forecast, 2013 - 2019" at GIIResearch.com This report includes market estimations for nanomedicine market for the forecast period 2013 - 2019. The market size is represented in terms of USD billion and the market estimates and forecasts are calculated, considering 2012 as the base year. Moreover, market trends and recent developments have been kept into account while forecasting market growth and revenue for the period 2013 - 2019. The overall nanomedicine market is segmented on the basis of application and geography and the market estimations for each of these segments, in terms of USD billion, is provided in this report. The nanomedicine market, by applications is segmented into neurological, cardiovascular, oncology, anti-inflammatory, anti-infective and other markets. The nanomedicine market is also estimated and analyzed on the basis of geographic regions such as North America, Europe, Asia-Pacific and rest of the world. Table of Contents Chapter 1 Preface Chapter 2 Executive Summary Chapter 3 Global Nanomedicine Market Overview Chapter 4 Global Nanomedicine Market, by … Continue reading →

St. Petersburg, FL (PRWEB) April 17, 2014 One of the most respected plastic surgeons in America is encouraging the FDA to move forward on approval of stem-cell based therapies inspired in part by Matthew McConaughey's recent Oscar win for the film Dallas Buyers Club. In the film, McConaughey portrayed Ron Woodroof, who fought the Food and Drug Administration over his use and distribution of unapproved but effective HIV/AIDS medications. In a letter to FDA comissioner Margaret A. Hamburg dated April 14th, Dr. Christian Drehsen of St. Petersburg claims that the story echoes current FDA treatment of stem cell therapies, of which almost none are approved for use in the United States. Drehsen cites his extensive past experience working with stem cells, and calls on the FDA to provide more rapid approval for the procedures, which he says are safe and effective. In the period 2009-2010, before the current regulatory embargo, Drehsen performed over 20 reconstructive and cosmetic stem-cell procedures using technology from the pioneering stem cell therapy research firm Cytori. In his letter, Drehsen writes that the results of his procedures were excellent, and hes frustrated with the limitations now in place. Japan has approved these procedures. Much of Europe … Continue reading →