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Transplantation of bone marrow mesenchymal stem cells decreases oxidative stress, apoptosis and hippocampal damage in brain of a spontaneously stroke model.
Abstract Stroke is the most common cause of motor disabilities and is a major cause of mortality worldwide. Adult stem cells have been shown to be effective against neuronal degeneration through mechanisms that include both the recovery of neurotransmitter activity and a decrease in apoptosis and oxidative stress. We chose the lineage Stroke Prone Spontaneously Hypertensive Rat (SHRSP) as a model for stem cells therapy. SHRSP can develop such severe hypertension that they generally suffer a stroke at approximately one year of age. The aims of this study were to evaluate whether mesenchymal stem cells (MSC) decreas...
Source: Free Radical Biology and Medicine - February 10, 2014 Category: Biology Authors: Longoni Calió M, Sousa Marinho D, Mi Ko G, Rodrigues R, Ferraz Carbonel A, Missae Oyama L, Ormanji M, Pinoti Guirao T, Luiz Calió P, Aparecida Reis L, de Jesus Simões M, Lisboa do Nascimento T, Teixeira Ferreira A, Rejane Antônio Bertoncini C Tags: Free Radic Biol Med Source Type: research

Dual-modality imaging of endothelial progenitor cells transplanted after ischaemic photothrombotic stroke
Publication date: Available online 2 November 2019Source: Life SciencesAuthor(s): Jie Ding, Yi Zhang, Cong-Xiao Wang, Pei-Cheng Li, Zhen Zhao, Chao Wang, Gao-Jun TengAbstractAimsStroke is a refractory cerebral blood circulation disorder. Endothelial progenitor cells (EPCs) participate in the repair and regeneration of vascular injury through the combination of cell replacement and bystander effects. Here, we evaluated the biological function of EPCs in treating a mouse model of cerebral ischaemic stroke, using dual-mode bioluminescence and magnetic resonance imaging to trace EPCs in vivo.Main methodsWe constructed a viral ...
Source: Life Sciences - November 4, 2019 Category: Biology Source Type: research

Atorvastatin alleviates microglia-mediated neuroinflammation via modulating the microbial composition and the intestinal barrier function in ischemic stroke mice.
We report herein that atorvastatin significantly ameliorated the defects in sensorimotor behaviors and reduced microglia-mediated neuroinflammation by inhibiting proinflammatory polarization of microglia in the peri-infarct cortex of the mice with permanent middle cerebral artery occlusion (pMCAO). Moreover, atorvastatin reversed microbial composition (characterized by increased abundance of Firmicutes and Lactobacillus and decreased Bacteroidetes abundance), increased fecal butyrate level, promoted intestinal barrier function (elevated protein levels of claudin-1, occludin and mucoprotein 2), as well as regulated intestin...
Source: Free Radical Biology and Medicine - December 3, 2020 Category: Biology Authors: Zhang P, Zhang X, Huang Y, Chen J, Shang W, Shi G, Zhang L, Zhang C, Chen R Tags: Free Radic Biol Med Source Type: research

Autologous stem cell therapy improves motor function in chronic stroke victims
(Cell Transplantation Center of Excellence for Aging and Brain Repair) One group of chronic stroke victims had their peripheral blood stem cells injected directly into the brain while another group did not. Those in the peripheral blood stem cell-injected group also received G-CSF, known to be potentially neuroprotective. Those receiving the peripheral blood stem cells experienced some improvement in stroke scales and functional outcome. The study provided first evidence that intracerebral injection of autologous peripheral blood stem cells can improve motor function in those who have suffered prior strokes and have motor deficits.
Source: EurekAlert! - Biology - April 23, 2014 Category: Biology Source Type: news

Comparative Analysis of the Effects of Intravenous Administration of Placental Mesenchymal Stromal Cells and Neural Progenitor Cells Derived from Induced Pluripotent Cells on the Course of Acute Ischemic Stroke in Rats
We compared the effects of placental mesenchymal stromal cells and neural progenitor cells derived from induced human pluripotent cells after their intravenous administration to rats in 24 h after transitory occlusion of the middle cerebral artery. The therapeutic effects were evaluated by the dynamics of animal survival, body weight, neurological deficit, and the volume of infarction focus in 7, 14, 30, and 60 days after surgery. Intravenous injection of neural progenitor cells produced a therapeutic effect on the course of experimental ischemic stroke by increasing animal survival in the most acute period and acceleratin...
Source: Bulletin of Experimental Biology and Medicine - February 20, 2019 Category: Biology Source Type: research

Glowing brain cells illuminate stroke recovery research
(Emory Health Sciences) A promising strategy for helping stroke patients recover, transplanting neural progenitor cells to restore lost functions, asks a lot of those cells. To help them to integrate into the brain, the cells get help from 'optochemogenetics.'
Source: EurekAlert! - Biology - July 1, 2019 Category: Biology Source Type: news

Therapeutic Efficacy and Migration of Mesenchymal Stem Cells after Intracerebral Transplantation in Rats with Experimental Ischemic Stroke
We studied therapeutic efficacy and migration characteristics of mesenchymal stem cells isolated from the human placenta after their intracerebral (stereotactic) administration to rats with the experimental ischemic stroke. It was shown that cell therapy significantly improved animal survival rate and reduced the severity of neurological deficit. New data on the migration pathways of transplanted cells in the brain were obtained.
Source: Bulletin of Experimental Biology and Medicine - June 19, 2023 Category: Biology 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: Biology Authors: Ali Hochberg Source Type: news

Study finds long-term survival of human neural stem cells transplanted into primate brain
(Cell Transplantation Center of Excellence for Aging and Brain Repair) Human neural stem cells (hNSCs) labeled with magnetic nanoparticles were followed by MRI after transplantation into the brains of primates. The study evaluated the long-term survival and differentiation of hNSCs. The hNSCs differentiated into neurons at 24 months and did not cause tumors. Researchers concluded that hNSCs could be of great value as a source for cell replacement and gene transfer for treating Parkinson's disease, Huntington's disease, Alzheimer's disease, ALS, spinal cord injury and stroke.
Source: EurekAlert! - Biology - April 23, 2014 Category: Biology Source Type: news

Targeting oxidative stress, a crucial challenge in renal transplantation outcome
Free Radic Biol Med. 2021 Apr 20:S0891-5849(21)00258-6. doi: 10.1016/j.freeradbiomed.2021.04.023. Online ahead of print.ABSTRACTDisorders characterized by ischemia/reperfusion (I/R) are the most common causes of debilitating diseases and death in stroke, cardiovascular ischemia, acute kidney injury or organ transplantation. In the latter example the I/R step defines both the amplitude of the damages to the graft and the functional recovery outcome. During transplantation the kidney is subjected to blood flow arrest followed by a sudden increase in oxygen supply at the time of reperfusion. This essential clinical protocol c...
Source: Free Radical Biology and Medicine - April 23, 2021 Category: Biology Authors: Carcy Romain Cougnon Marc Poet Mallorie Durandy Manon Sicard Antoine Counillon Laurent Blondeau Nicolas Hauet Thierry Tauc Michel Pisani Didier F Source Type: research

Dose-Dependent Effects of Intravenous Mesenchymal Stem Cell Transplantation in Rats with Acute Focal Cerebral Ischemia
Intravenous transplantation of mesenchymal stem (stromal) cells (MSC) is a promising approach to the treatment of ischemic stroke. In the published reports of the already completed preclinical and clinical studies the dosages of transplanted MSC greatly vary. However, the optimal dosage has not been determined. The dose-dependent effect of intravenous MSC transplantation was studied, in rats with experimental cerebral infarction. To this end, 5 ×105 and 2 ×106 MSC were intravenously administered 24 h after modeling of acute focal ischemia followed by complex assessment of the therapeutic efficacy over 60 days. The rate a...
Source: Bulletin of Experimental Biology and Medicine - September 5, 2022 Category: Biology Source Type: research