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Contralaterally transplanted human embryonic stem cell-derived neural precursor cells (ENStem-A) migrate and improve brain functions in stroke-damaged rats.
In this study, we investigated the fates of human embryonic stem cell (hESC)-derived NPCs (ENStem-A) for 8 weeks following transplantation into the side contralateral to the infarct region using 7.0T animal magnetic resonance imaging (MRI). T2- and T2*-weighted MRI analyses indicated that the migrating cells were clearly detectable at the infarct boundary zone by 1 week, and the intensity of the MRI signals robustly increased within 4 weeks after transplantation. Afterwards, the signals were slightly increased or unchanged. At 8 weeks, we performed Prussian blue staining and immunohistochemical staining using human-specifi...
Source: exp Mol Med - November 19, 2013 Category: Molecular Biology Authors: Chang DJ, Oh SH, Lee N, Choi C, Jeon I, Kim HS, Shin DA, Lee SE, Kim D, Song J Tags: Exp Mol Med Source Type: research

Mesenchymal Stem Cells Prevent Hydrocephalus After Severe Intraventricular Hemorrhage Basic Sciences
Conclusions— Intraventricular transplantation of umbilical cord blood-derived mesenchymal stem cells significantly attenuated the posthemorrhagic hydrocephalus and brain injury after IVH. This neuroprotective mechanism appears to be mediated by the anti-inflammatory effects of these cells.
Source: Stroke - January 18, 2013 Category: Neurology Authors: Ahn, S. Y., Chang, Y. S., Sung, D. K., Sung, S. I., Yoo, H. S., Lee, J. H., Oh, W. I., Park, W. S. Tags: Animal models of human disease, Acute Cerebral Hemorrhage, Other Stroke Treatment - Medical Basic Sciences Source Type: research

Stem Cells for Cell-Based Therapies
The world of stem cells We know the human body comprises many cell types (e.g., blood cells, skin cells, cervical cells), but we often forget to appreciate that all of these different cell types arose from a single cell—the fertilized egg. A host of sequential, awe-inspiring events occur between the fertilization of an egg and the formation of a new individual: Embryonic stem (ES) cells are also called totipotent cells. The first steps involve making more cells by simple cell division: one cell becomes two cells; two cells become four cells, etc. Each cell of early development is undifferentiated; that is, it is...
Source: ActionBioscience - December 28, 2012 Category: Science Authors: Ali Hochberg Source Type: news

Survival and Differentiation of Transplanted Neural Stem Cells Derived from Human Induced Pluripotent Stem Cells in A Rat Stroke Model
Conclusions: To our knowledge, this is the first report of transplantation of NSCs derived from human iPSCs in a stroke model. Human iPSC-derived NSCs survived in the postischemic rat brain and appeared to differentiate, primarily into neurons. This cell transplantation approach for stroke appears to be feasible, but further optimization is needed.
Source: Journal of Stroke and Cerebrovascular Diseases - November 14, 2011 Category: Neurology Authors: Matthew B. Jensen, Hongmei Yan, Rajeev Krishnaney-Davison, Abdullah Al Sawaf, Su-Chun Zhang Tags: Original Articles Source Type: research

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