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Stem Cell Therapy Shows Promise in Repairing Brain Damage Even Hours After Stroke Occurs

Durham, NC (PRWEB) August 09, 2013

Stroke is a major health concern and is a leading cause of death in the United States, according to the Center for Disease Control. Despite significant research efforts, developing treatments that ensure complete recovery for stroke patients poses an extreme challenge, especially when more than a few hours have passed between onset of the stroke and administration of treatment.

However, a new study released today in STEM CELLS Translational Medicine indicates that endothelial precursor cells, which are found in the bone marrow, umbilical cord blood, and as very rare cells in peripheral blood, could make a significant difference for these patients’ recovery — even in the later stages of stroke. In animal studies, the treatment minimized the initial brain injury and helped repair the stroke damage.

“Previous studies indicated that stem/progenitor cells derived from human umbilical cord blood (hUCB) improved functional recovery in stroke models,” noted Branislava Janic, Ph.D., a member of Henry Ford Health System’s Cellular and Molecular Imaging Laboratory in Detroit and lead author of the study. “We wanted to examine the effect of hUCB-derived AC133+ endothelial progenitor cells (EPCs) on stroke development and resolution in rats.”

Dr. Janic and his team injected rats that had suffered strokes with the stem cells. When they later examined the animals using MRI, they found that the transplanted cells had selectively migrated to the injured area and that the stem cells stopped the tissue damage from spreading, instigated regeneration, and also affected the time course for stroke resolution. A significant decrease in lesion size also was observed, at a dose of 10 million cells, as early as seven days after the stroke’s onset.

“This led us to conclude that cord blood-derived EPCs can significantly contribute to developing more effective treatments that allow broader time period for intervention, minimize the initial brain injury and help repair the damage in later post-stroke phases,” Dr. Janic said.

“The early signs of stroke are often unrecognized, and many patients cannot take advantage of clot-busting treatments within the required few hours after stroke onset,” said Anthony Atala, M.D., editor of STEM CELLS Translational Medicine and director of the Wake Forest Institute for Regenerative Medicine. “In this animal study, a combination of stem cells shows promise for healing stroke damage when administered 24 hours after the stroke.”

The full article, “Intravenous administration of human umbilical cord blood derived AC133+ endothelial progenitor cells in rat stroke model reduces infarct volume — magnetic resonance imaging (MRI) and histological findings,” can be accessed at

About STEM CELLS Translational Medicine: STEM CELLS TRANSLATIONAL MEDICINE (SCTM), published by AlphaMed Press, is a monthly peer-reviewed publication dedicated to significantly advancing the clinical utilization of stem cell molecular and cellular biology. By bridging stem cell research and clinical trials, SCTM will help move applications of these critical investigations closer to accepted best practices.

About AlphaMed Press: Established in 1983, AlphaMed Press with offices in Durham, NC, San Francisco, CA, and Belfast, Northern Ireland, publishes two other internationally renowned peer-reviewed journals: STEM CELLS® (, in its 31th year, is the world's first journal devoted to this fast paced field of research. The Oncologist® (, also a monthly peer-reviewed publication, in its 18th year, is devoted to community and hospital-based oncologists and physicians entrusted with cancer patient care. All three journals are premier periodicals with globally recognized editorial boards dedicated to advancing knowledge and education in their focused disciplines.

Read the full story at

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