Will stem cell-based treatments make a difference to the developing world?
A new study in the open access journal PLoS Medicine suggests that developing countries could benefit enormously from the new field of regenerative medicine, in which treatments are being developed from stem cells.
Developing countries are increasingly struggling to manage epidemic rates of chronic diseases, like diabetes, stroke, and heart disease, and it is expected that stem cell research could lead to better treatments for such chronic conditions.
In the study, by Abdallah Daar (McLaughlin Centre for Molecular Medicine, University of Toronto) and colleagues, an international panel of 44 experts ranked the ten most promising applications of regenerative medicine for improving health in developing countries. The experts included researchers in disciplines contributing to regenerative medicine and clinicians working in fields that will be at the forefront of applying regenerative medicine therapies.
The top-ranked application was novel methods of insulin replacement and pancreatic islet cell regeneration for diabetes. The panelists ranked this number one because of the high prevalence of diabetes in developing countries and the major health, social, and economic burden that results. Panelists emphasized that controlling diabetes would in turn reduce the incidence of diabetes complications such as blindness, heart disease, chronic kidney disease, and diabetic ulcers.
The panelists noted that repeated insulin treatments are costly and inaccessible to many patients in developing countries. They felt that regenerative medicine therapies, such as bone marrow stem cell transplantation or microencapsulated islet cells using new biomaterials, could provide a permanent solution to treating diabetes and reduce the financial burden caused by the purchase of insulin.
The second-ranked application was regenerating failed heart muscle using the patient's own cells, injected directly or introduced via patches, for treating heart muscle damage due to a heart attack or a cardiomyopathy (a condition causing weakness of the heart muscle). Panelists noted that such therapy shows promising early results, and is being tested in clinical trials in a number of countries.
Other highly ranked applications were immune system enhancement by engineered immune cells, new vaccination strategies for treating infectious diseases, new stem cell-based technologies for replacing skin loss due to burns, wounds, and diabetic ulcers, and new blood substitutes.
The study results, say the authors, "may be used as a guide for the policy formulation of international and bilateral aid agencies, and by developing countries to help target policy aimed at initiating or developing further their existing capacity in regenerative medicine."
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Citation: Greenwood HL, Singer PA, Downey GP, Martin DK, Thorsteinsdóttir H, et al. (2006) Regenerative medicine and the developing world. PLoS Med 3(9): e381
PLEASE ADD THE LINK TO THE PUBLISHED ARTICLE IN ONLINE VERSIONS OF YOUR REPORT: http://dx.doi.org/10.1371/journal.pmed.0030381
PRESS-ONLY PREVIEW OF THE ARTICLE: http://www.plos.org/press/plme-03-09-daar.pdf
Related image for press use: http://www.plos.org/press/plme-03-09-daar.jpg
Caption: Countries Represented on the Expert Panel
University of Toronto
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Researchers Heather L. Greenwood, Peter A. Singer, Gregory P. Downey, Douglas K. Martin, Halla Thorsteinsdóttir and Abdallah S. Daar are available for advance interviews Sept. 7-11. To schedule an interview, call Terry Collins at +1-416-538-8712 or +1-416-878-8712 or e-mail [email protected].
About PLoS Medicine
PLoS Medicine is an open access, freely available international medical journal. It publishes original research that enhances our understanding of human health and disease, together with commentary and analysis of important global health issues. For more information, visit http://www.plosmedicine.org
About the Public Library of Science
The Public Library of Science (PLoS) is a non-profit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource. For more information, visit http://www.plos.org
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