Adverse Reactions to Stem Cell Therapy

Stem cell therapy is one of the most discussed regenerative therapies in the horse health community today, and
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Stem cell therapy is one of the most discussed regenerative therapies in the horse health community today, and both peer-reviewed and anecdotal evidence indicates that these tiny tools have been relatively successful in assisting injury healing. But as with most therapies, despite some great success things don’t always go as planned. At the 2011 North American Veterinary Regenerative Medicine Conference held June 2-4 in Lexington, Ky., a researcher from the University of California (UC), Davis, discussed a recent study that evaluated the adverse reactions associated with stem cell injections.

"Stem cell therapy has become common in equine practice," explained Larry Galuppo, DVM, Dipl. ACVS, professor and chief of equine surgery at UC Davis’ William R. Pritchard Veterinary Medical Teaching Hospital and lead researcher on the study. "There are two different types of stem cell therapy. The first involves collecting and injecting an injured horses’ own stem cells back into the site or injury–a process referred to as ‘autologous’–and using ‘banked’ stem cells from one horse to treat an injury in a second horse. This latter technique is referred to as allogeneic,"

Using the allogeneic method requires having a large dose of stem cells readily available to treat injured horses (think of it as stem cells available "off the shelf"), rather than collecting new stem cells from the injured horse and waiting several weeks for the cells to proliferate (since a large number of cells are needed for each treatment) before injecting them into the injury site.

"To determine if there was a difference in the frequency of adverse effects when autologous versus allogeneic stem cells were used, we closely observed 36 horses after stem cell therapy and recorded our findings," explained Galuppo

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Written by:

Stacey Oke, MSc, DVM, is a practicing veterinarian and freelance medical writer and editor. She is interested in both large and small animals, as well as complementary and alternative medicine. Since 2005, she’s worked as a research consultant for nutritional supplement companies, assisted physicians and veterinarians in publishing research articles and textbooks, and written for a number of educational magazines and websites.

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