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Allogeneic adipose stem cell therapy in acute myocardial infarction *

Background

Stem cell therapy offers a promising approach to reduce the long-term mortality rate associated with heart failure after acute myocardial infarction (AMI). To date, in vivo translational studies have not yet fully studied the immune response to allogeneic adipose tissue-derived mesenchymal stem cells (ATMSCs). We analysed the immune response and the histological and functional effects of allogeneic ATMSCs in a porcine model of reperfused AMI and determine the effect of administration timing.

Design

Pigs that survived AMI (24/26) received intracoronary administration of culture medium after reperfusion (n = 6), ATMSCs after reperfusion (n = 6), culture medium 7 days after AMI (n = 6) or ATMSCs 7 days after AMI (n = 6). At 3-week follow-up, cardiac function, alloantibodies and histological analysis were evaluated.

Results

Administration of ATMSCs after reperfusion and 7 days after AMI resulted in similar rates of cell engraftment; some of those cells expressed endothelial, smooth muscle and cardiomyogenic cell lineage markers. Delivery of ATMSCs after reperfusion compared with that performed at 7 days was more effective in increasing: vascular density (249 ± 64 vs. 161 ± 37 vessels/mm2; < 0·01), T lymphocytes (1 ± 0·4 vs. 0·4 ± 0·3% of area CD3+; < 0·05) and expression of vascular endothelial growth factor (VEGF; 32 ± 7% vs. 20 ± 4% of area VEGF+; < 0·01). Allogeneic ATMSC-based therapy did not change ejection fraction but generated alloantibodies.

Conclusions

The present study is the first to demonstrate that allogeneic ATMSCs elicit an immune response and, when administered immediately after reperfusion, are more effective in increasing VEGF expression and neovascularization.

URL: http://onlinelibrary.wiley.com/doi/10.1111/eci.12195/full

* Legal Disclaimer: Chelation and Hyperbaric Therapy, Stem Cell Therapy, and other treatments and modalities mentioned or referred to in this web site are medical techniques that may or may not be considered “mainstream”. As with any medical treatment, results will vary among individuals, and there is no implication or guarantee that you will heal or achieve the same outcome as patients herein.

As with any procedure, there could be pain or other substantial risks involved. These concerns should be discussed with your health care provider prior to any treatment so that you have proper informed consent and understand that there are no guarantees to healing.

THE INFORMATION IN THIS WEBSITE IS OFFERED FOR GENERAL EDUCATIONAL PURPOSES ONLY AND DOES NOT IMPLY OR GIVE MEDICAL ADVICE. No Doctor/Patient relationship shall be deemed to have arisen simply by reading the information contained on these pages, and you should consult with your personal physician/care giver regarding your medical treatment before undergoing any sort of treatment or therapy.

Published on 02-14-2015