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Study Finds Estrogen Receptor-Negative Tumors Have Vaccine Targets
A comprehensive analysis of nearly 1,600 tumor samples has found that CT-X genes are expressed in nearly half the breast cancers that lack the estrogen receptor (ER). CT-X gene products are the targets of therapeutic cancer vaccines already in phase III clinical trials for lung cancer and melanoma. The study - to be published in the Early Edition of the Proceedings of the National Academy of Sciences this week - was led by the international Ludwig Institute for Cancer Research (LICR).
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Induced Pluripotent Stem Cells Repair Heart
In a proof-of-concept study, Mayo Clinic investigators have demonstrated that induced pluripotent stem (iPS) cells can be used to treat heart disease. iPS cells are stem cells converted from adult cells. In this study, the researchers reprogrammed ordinary fibroblasts, cells that contribute to scars such as those resulting from a heart attack, converting them into stem cells that fix heart damage caused by infarction. The findings appear in the current online issue of the journal Circulation.
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PIH Founder Farmer Discussing Possible Appointment To Coordinate U.S. Global Health Initiatives, Boston Globe Reports
Paul Farmer -- founder of Partners in Health and vice chair of the Department of Global Health and Social Medicine at Harvard Medical School -- said he is in discussions with the State Department about a possible Obama administration appointment to coordinate U.S. global health initiatives, the Boston Globe reports. Farmer made the announcement Monday during a meeting with HMS faculty. Farmer said that he has not decided whether he will accept the appointment if he receives a formal offer but that he is considering it, according to the Globe. The Globe reports that it was unable to confirm whether Farmer is being considered for a full-time policy position or for an advisory role or if the appointment would be a new or existing position. Several top positions at USAID -- including administrator, deputy administrator and the assistant administrator in charge of global health are vacant, the Globe reports. These positions are presidential appointments and would require Senate confirmation. In addition, Farmer could be discussing health policy positions with the State Department. Farmer did not respond for requests seeking comment. PIH and HMS also declined comment. A spokesperson at the State Department would not discuss personnel discussions that are in progress or possible new positions. Laurie Garrett, a global health policy specialist at the Council on Foreign Relations, said the administration"s announcement last week of a $63 billion, six-year initiative that aims to address HIV/AIDS, tuberculosis, malaria and other illnesses could allow new appointees the opportunity to make a significant impact in U.S. global health policy. Garrett, who has known Farmer for several years, added that she would be surprised if he is considering a government position in part because of his extensive involvement with PIH (Smith, Boston Globe, 5/15).
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Golden Rice An Effective Of Vitamin A

The beta-carotene in so-called "Golden Rice" converts to vitamin A in humans, according to researchers at Baylor College of Medicine and Tufts University in an article that appears in the current issue of the American Journal of Clinical Nutrition. Golden Rice was developed in the early 1990s with a grant from the Rockefeller Foundation with the goal of creating rice that had beta-carotene - a vitamin A precursor - in the rice grain. In its current form, Golden Rice contains 35 micrograms of beta-carotene per gram. "We found that four units of beta-carotene from Golden Rice convert to one unit of vitamin A in humans," said Dr. Michael Grusak, associate professor of pediatrics at the USDA/ARS Children"s Nutrition Research Center at BCM and Texas Children"s Hospital. They determined this by feeding five healthy adults a specific amount of specially-labeled Golden Rice and measured the amount of retinol, a form of vitamin A, in the blood. Vitamin A deficiency is prevalent in many parts of the world where poorer community members rely on rice as their major food . People who lack adequate amounts of this vitamin can have vision problems or even blindness as a result. "By incorporating vitamin A into the major crop that is consumed, we would be able to make it accessible to the majority of people in the area," said Grusak. Additional research is necessary before Golden Rice is made commercially available. The next steps of the research include incorporating this technology into the rice grains found in various regions and continuing testing the conversion rates in humans. The study can be found at http://www.ajcn.org/cgi/rapidpdf/ajcn.2008.27119v1. Others who participated in this study include Guangwen Tang, Jian Qin, Gregory G. Dolnikowski and Robert M Russell, all of the Jean Mayer US Department of Agriculture Human Nutrition Research Center on Aging at Tufts University. Funding for this study came from the National Institute of Diabetes and Digestive and Kidney Diseases, a part of the National Institutes of Health. Dipali Pathak Baylor College of Medicine


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