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Human umbilical cord blood cells aid diabetic wound healing
Date:2/22/2011

Tampa, Fla. (Feb. 22, 2011) Transplanting human umbilical cord blood-derived endothelial progenitor cells (EPCs) has been found to "significantly accelerate" wound closure in diabetic mouse models, said a team of Korean researchers publishing in the current issue of Cell Transplantation (19:12), now freely available on-line at http://www.ingentaconnect.com/content/cog/ct/ .

According to the study's corresponding author, Dr. Wonhee Suh of the CHA University Stem Cell Institute, diabetes is often associated with impaired wound healing. While the therapeutic potential of transplanted EPCs has been demonstrated in animal models and in humans who have suffered stroke, myocardial infarction and peripheral artery disease, their effect in healing stubborn wounds has not been studied to the same degree.

"EPCs are involved in revascularization of injured tissue and tissue repair," said Dr. Suh. "Wounds associated with diabetes that resist healing are also associated with decreased peripheral blood flow and often resist current therapies. Normal wounds, without underlying pathological defects heal readily, but the healing deficiency of diabetic wounds can be attributed to a number of factors, including decreased production of growth factors and reduced revascularization.

The researchers, who transplanted EPCs into an experimental group of mice modeled with diabetes-associated wounds, but did not transplant EPCs into a control group, found that the EPCs "prompted wound healing and increased neovascularization" in the experimental group.

"The transplantation of EPCs derived from human umbilical blood cells accelerated wound closure in diabetic mice from the earliest point," said Dr. Suh. "Enhanced re-epithelialization made a great contribution in accelerating wound closure rate."

The researchers found that growth factors and cytokines (small proteins secreted by specific cells of
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Contact: David Eve
celltransplantation@gmail.com
Cell Transplantation Center of Excellence for Aging and Brain Repair
Source:Eurekalert

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