Cell transplantation and cardiac repair( Tampa Fla. (July 1 2009) The fronti...),Health
Tampa, Fla. (July 1, 2009) The frontiers of cell transplantation for cardiac repair are discussed in the current issue of Cell Transplantation (Vol. 18 No.3), now available on-line without charge at http://www.ingentaconnect.com/content/cog/ct.
Two studies are highlighted, one by a Brazil-based research team who looked at two different bone marrow cell delivery methods following myocardial infarction, and a second study from a team of researchers in Germany who used bone marrow stem cell transplants to repair limb ischemia with a goal of preventing amputations.
Two delivery techniques for stem cells
With evidence mounting that cell-based therapies can repair the injured myocardium following acute infarction, a Brazil-based research team addressed questions of the best way to safely deliver bone-marrow mononuclear cells (BMMNC) derived from the same patient (autologous cells) to the heart, following a heart attack caused by a prolonged interruption of blood flow leading to changes in the electrocardiogram (ST elevation myocardial infarction). They compared two different delivery techniques through the anterograde intra-coronary (ICA) or via the retrograde intra-coronary artery vein (ICV). Researchers used radiolabeled cells to evaluate cell distribution patterns in the heart and their relationship with left ventricle function improvement.
"BMMNC retention by damaged heart tissue was apparently higher when the anterograde approach was used, although further studies are required to confirm this data," said corresponding author Dr. Hans Dohman of the Hospital Pro-Cardiaco in Rio de Janeiro, Brazil.
While previous reports observed that microvascular obstruction impairing cell uptake by the heart could be an issue, the team hypothesized that an intravenous approach may overcome that potential.
"We hypothesized that an intravenous approach might overcome this
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| Contact: Hans Dohman Directoria.cientifica@procardiaco.com.br 55-212-131-1584 Cell Transplantation Center of Excellence for Aging and Brain Repair Source:Eurekalert |
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