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Third-party blood stem cell transplantation as a factor to impact on poor graft function
Date:3/18/2013

Putnam Valley, NY. (March 18, 2013) When a research team in China evaluated the efficacy and safety of using mesenchymal stem cells (MSCs) expanded from the bone marrow of non-self-donors to treat patients experiencing poor graft function (PGF) after receiving transplants of non-self-donated blood stem cells (allo-HSCT), they found that the mesenchymal stem cells were both safe and effective for treating primary and secondary PGF.

The study appears as an early e-publication for the journal Cell Transplantation, and is now freely available on-line at http://www.ingentaconnect.com/content/cog/ct/pre-prints/ct0832liu.

"Allogenic hematopoietic stem cell transplantation can cure many hematologic diseases," said study co-author Dr. Qifa Liu of the Southern Medical University in Guangzhou, China. "However, poor graft function is a complication that occurs in five to 27 percent of patients receiving allo-HSCT and is associated with considerable morbidity and mortality."

According to the researchers, graft function may be poor after allogenic hematopoietic stem cell transplantation because of slow or incomplete reconstitution of blood counts or decreasing blood counts. PGF, which is poorly understood, is a potentially life-threating condition when it leads to graft vs. host disease (GVHD).

In this study, when 20 patients demonstrated risk factors for PGF, researchers infused them with MSCs derived from bone marrow from third-party donors. PGF had developed in five patients with acute GVHD and two patients had chronic GVHD.

"The patients receiving the MSCs achieved either complete responses or improved GVHD," said the researchers. "However, the PGF did not improve when immunosuppressive agents were given. This means that additional studies will be needed to determine whether PGF is associated with immunologic factors."

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Contact: Robert Miranda
cogcomm@aol.com
Cell Transplantation Center of Excellence for Aging and Brain Repair
Source:Eurekalert

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