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Effect of gene modified mesenchymal stem cells overexpression human receptor activity modified protein 1 on inflammation and cardiac repair in a rabbit model of myocardial infarction
To investigate the effect of mesenchymal stem cells (MSCs) overexpressing human receptor activity modified protein 1 (hRAMP1) by adenovirus vector on infarction related inflammation and cardiac repair in a rabbit model of myocardial infarction (MI).
Thirty rabbits underwent coronary artery ligation for 60 minutes followed by 24 hours reperfusion and divided into MSC(hRAMP1) group (intravenously injection of MSCs transfected with adenovirus vector encoding hRAMP1 gene enhanced green fluorescent protein, EGFP, n = 10), MSC(null) group (MSCs transfected with adenovirus vector encoding only EGFP without hRAMP1 gene, n = 10) and control group (equally volume of phosphate buffered saline, PBS, n = 10). The plasma level of tumor necrosis factor-α (TNF-α) and interleukin-10 (IL-10) were quantified by ELISA assay at before and 1, 3, 7, 28 days after induction of MI. The expression of nuclear factor-κB (NF-κB) and hRAMP1 in infracted myocardium were measured by Western blot at 1, 3, 7, 28 day following MI. The area of