Pancreatic islet cell transplantation has become a promising treatment for type 1 diabetes in humans in recent years. But without several powerful immunosuppressive drugs, the body's immune system would destroy the engrafted islet cells in transplant patients leading to insulin deficiency, an excess of glucose in the blood and the return of diabetes.
Lisofylline, or LSF, has the potential to help prevent this cellular destruction by preserving insulin secretion by pancreatic beta cells in the presence of autoimmune attackers called inflammatory cytokines, according to U.Va. researchers.
"Our findings are very encouraging and we are excited that Lisofylline worked so well in this animal model," said Dr. Jerry Nadler, chief of the division of endocrinology and metabolism at U.Va. and director of the Diabetes and Hormone Center of Excellence. "We have discovered a potentially new way to protect islet cells in a clinical transplant setting. It's possible this research could form a basis for additional studies to use LSF or related anti-inflammatory compounds in humans to limit the need for more toxic immunosuppressant drugs in islet cell transplant patients."
In the study, diabetic mice that can only mount an autoimmune attack were given islet transplants in the kidney and then daily injections of LSF for 3 weeks. A control group was treated with only saline. Results of blood glucose tests showed that the LSF-treated mice maintained healthy glucose levels, without immunosuppressants and insulin, for more than 65 days. Mice treated with saline main
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Contact: Bob Beard
reb8e@virginia.edu
434-982-4490
University of Virginia Health System
20-Jan-2004