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- W2100030378 abstract "The mechanism(s) underlying the beneficial effects of adult mesenchymal stem cells (MSCs) after myocardial infarction (MI) is poorly understood. One possible explanation is the ability of MSCs to secrete cytokines, which modulate cardiomyocyte survival and function. MSCs express at least two cytoprotective cytokines, hepatocyte growth factor (HGF) and stromal cell-derived factor-1 alpha (CXCL12). The aim of our study was to compare the effects of these two cytokines administered acutely post-MI. We subjected adult male Lewis rats to myocardial ischemia/reperfusion injury. Immediately upon reperfusion, polymers saturated with HGF or CXCL12 were placed onto the infarcted anterior wall and the rats were allowed to recover. Echocardiographic analysis at 4 wk post-MI to assess left ventricular (LV) function revealed that LV ejection fraction was increased in the HGF treated group compared with the phosphate-buffered saline (PBS) control group. Likewise, LV end diastolic dimension was reduced in the HGF treated group compared with the PBS control group. Similarly, invasive hemodynamics at 12 wk showed improved contractility and relaxation in the HGF treated group compared with the PBS control group. In contrast, no significant effect on LV function was seen in the CXCL12 treated group. To determine the potential mechanism for this effect, infarct size (IFS) at 72 h was determined. IFS was decreased 4.2-fold in the HGF treated group compared with the PBS control group. Thus, HGF acutely post-MI using polymer delivery reduces IFS, leading to beneficial effects on post-MI LV remodeling." @default.
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- W2100030378 date "2008-08-01" @default.
- W2100030378 modified "2023-10-09" @default.
- W2100030378 title "The Role of Cytoprotective Cytokines in Cardiac Ischemia/Reperfusion Injury" @default.
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- W2100030378 doi "https://doi.org/10.1016/j.jss.2007.08.005" @default.
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