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Integrin {alpha}4 Overexpression on Rat Mesenchymal Stem Cells Enhances Transmigration and Reduces Cerebral Embolism After Intracarotid Inȷection Brief Report
Conclusions—ITGA4 overexpression on MSCs enhances transendothelial migration in vitro, but not in vivo, although it improves safety after intracarotid transplantation into stroke rats.
Source: Stroke - September 25, 2017 Category: Neurology Authors: Li–li Cui, Franziska Nitzsche, Evgeny Pryazhnikov, Marina Tibeykina, Laura Tolppanen, Jussi Rytkonen, Tuulia Huhtala, Jing–wei Mu, Leonard Khiroug, Johannes Boltze, Jukka Jolkkonen Tags: Cell Therapy, Translational Studies, Ischemic Stroke Brief Reports Source Type: research

Intra-arterial delivery of human bone marrow mesenchymal stem cells is a safe and effective way to treat cerebral ischemia in rats.
In this study, the therapeutic effects of bone marrow stem cells (BMSCs) delivered by intra-arterial (IA) and intravenous (IV) injection in a rat transient middle cerebral artery occlusion model (MCAO) are compared. Histological analysis demonstrated that the IA route bypasses the pulmonary system and directs the cells to the ischemic parts of the brain more efficiently. The BMSCs delivered via the IA route promoted angiogenesis and improved functional recovery. The cerebral blood flow (CBF) of the rats was monitored during the IA injection process. No reduction in CBF or microstrokes was detected. Brain perfusion and meta...
Source: Cell Transplantation - November 4, 2014 Category: Cytology Authors: Du S, Guan J, Mao G, Liu Y, Ma S, Bao X, Gao J, Feng M, Li G, Ma W, Yang Y, Zhao RC, Wang R Tags: Cell Transplant Source Type: research

Differential Clearance of Rat and Human Bone Marrow-Derived Mesenchymal Stem Cells from the Brain After Intra-arterial Infusion in Rats.
Abstract Intra-arterial (i.a.) delivery of bone marrow-derived mesenchymal stem cells (BMMSCs) has shown potential as a minimally invasive therapeutic approach for stroke. The aim of the present study was to determine the whole-body biodistribution and clearance of technetium-99m ((99m)Tc)-labeled rat and human BMMSCs after i.a. delivery in a rat model of transient middle cerebral artery occlusion (MCAO) using single photon emission computed tomography (SPECT). Our hypothesis was that xenotransplantation has a major impact upon the behavior of cells. Male RccHan:Wistar rats were subjected to sham-operation or MCAO...
Source: Cell Transplantation - March 3, 2014 Category: Cytology Authors: Khabbal J, Kerkelä E, Mitkari B, Raki M, Nystedt J, Mikkonen V, Bergström K, Laitinen S, Korhonen M, Jolkkonen J Tags: Cell Transplant Source Type: research