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OBJECTIVE We tested the hypothesis that intravenously administered human umbilical cord blood (hUCB) cells contribute to repair processes following myocardial infarction. METHODS hUCB mononuclear cells containing 0.11% to 1.1% CD34(+) cells were injected in the tail vein of NOD/scid mice that had (MI+) or had not (MI-) previously undergone ligation of the(More)
Engraftment of mesenchymal stem cells (MSCs) derived from adult bone marrow has been proposed as a potential therapeutic approach for postinfarction left ventricular dysfunction. However, limited cell viability after transplantation into the myocardium has restricted its regenerative capacity. In this study, we genetically modified MSCs with an(More)
OBJECTIVE The regenerative potential of endothelial and hematopoietic progenitor cells in the heart may vary according to their origin. This study was designed to compare the functional effects of CD133+ cells from human cord blood and bone marrow in a mouse model of myocardial injury. METHODS 5 x 10(5) CD133+ cells from bone marrow (BM(CD133)) or cord(More)
Maintaining cache consistency in mobile environment is an important issue which is extensively studied in the last decade. In mobile ad hoc networks (MANETs), a large number of nonstationary mobile terminals connect with each other through multi-hop unreliable communication channels, coupling with the fact that disconnections from the network are very(More)
Matrigel promotes angiogenesis in the myocardium from ischemic injury and prevents remodelling of the left ventricle. We assessed the therapeutic efficacy of intracardiac matrigel injection and matrigel-mediated stem cell homing in a rat myocardial infarction (MI) model. Following MI, matrigel (250 μl) or phosphate-buffered solution (PBS) was delivered by(More)
Compared with the traditional computing models such as grid computing and cluster computing, a key advantage of Cloud computing is that it provides a practical business model for customers to use remote resources. However, it is challenging for Cloud providers to allocate the pooled computing resources dynamically among the differentiated customers so as to(More)
Cache invalidation is an important issue in mobile caching and has received much attention by researchers. However most existing studies on cache invalidation strategies are limited to cellular wireless networks in which the mobile terminals can communicate with the base stations directly. In this paper, we address the seldom studied issue of cache(More)