Effects of adipose tissue-derived stem cell therapy after myocardial infarction: impact of the route of administration

J Card Fail. 2010 Apr;16(4):357-66. Epub 2010 Feb 9.
Rigol M, Solanes N, Farré J, Roura S, Roqué M, Berruezo A, Bellera N, Novensà L, Tamborero D, Prat-Vidal C, Huzman MA, Batlle M, Hoefsloot M, Sitges M, Ramírez J, Dantas AP, Merino A, Sanz G, Brugada J, Bayés-Genís A, Heras M.
Institut Clínic del Tòrax, Institut d’Investigacions Biomèdiques Agustí Pi Sunyer, Hospital Clínic, Barcelona, Spain. mrigol@clinic.ub.es
BACKGROUND: Cell-based therapies offer a promising approach to reducing the short-term mortality rate associated with heart failure after a myocardial infarction. The aim of the study was to analyze histological and functional effects of adipose tissue-derived stem cells (ADSCs) after myocardial infarction and compare 2 types of administration pathways.
METHODS AND RESULTS: ADSCs from 28 pigs were labeled by transfection. Animals that survived myocardial infarction (n = 19) received: intracoronary culture media (n = 4); intracoronary ADSCs (n = 5); transendocardial culture media (n = 4); or transendocardial ADSCs (n = 6). At 3 weeks’ follow-up, intracoronary and transendocardial administration of ADSCs resulted in similar rates of engrafted cells (0.85 [0.19-1.97] versus 2 [1-2] labeled cells/cm(2), respectively; P = NS) and some of those cells expressed smooth muscle cell markers. The intracoronary administration of ADSCs was more effective in increasing the number of small vessels than transendocardial administration (223 +/- 40 versus 168 +/- 35 vessels/mm(2); P < .05). Ejection fraction was not modified by stem cell therapy.
CONCLUSIONS: This is the first study to compare intracoronary and transendocardial administration of autologous ADSCs in a porcine model of myocardial infarction. Both pathways of ADSCs delivery are feasible, producing a similar number of engrafted and differentiated cells, although intracoronary administration was more effective in increasing neovascularization.
(c) 2010 Elsevier Inc. All rights reserved.
PMID: 20350704 [PubMed – indexed for MEDLINE]