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Total 1233 results found since Jan 2013.

The aPKC-CBP Pathway Regulates Post-stroke Neurovascular Remodeling and Functional Recovery
Publication date: Available online 22 November 2017 Source:Stem Cell Reports Author(s): Ayden Gouveia, Matthew Seegobin, Timal S. Kannangara, Ling He, Fredric Wondisford, Cesar H. Comin, Luciano da F. Costa, Jean-Claude Béïque, Diane C. Lagace, Baptiste Lacoste, Jing Wang Epigenetic modifications have emerged as attractive molecular substrates that integrate extrinsic changes into the determination of cell identity. Since stroke-related brain damage releases micro-environmental cues, we examined the role of a signaling-induced epigenetic pathway, an atypical protein kinase C (aPKC)-mediated phosphorylation of CREB-bindi...
Source: Stem Cell Reports - December 1, 2017 Category: Stem Cells Source Type: research

CD271+, CXCR7+, CXCR4+, and CD133+ Stem/Progenitor Cells and Clinical Characteristics of Acute Ischemic Stroke Patients
This study discovers possible activity of the CD45–CD34 + CD271+ progenitor/stem cells during the first 7 days after ischemic stroke, suggests associations of the CD45–CD34 + CD133+ cells with the neurological status of stroke patients, and some activity of the CD45–CD34 + CD133+, the CD45–CD34 + CXCR4+, and the CD45– CD34 + CXCR7+ progenitor/stem cells in the process of arterial remodeling.
Source: NeuroMolecular Medicine - May 9, 2018 Category: Neurology Source Type: research

Repetitive transcranial magnetic stimulation promotes functional recovery and differentiation of human neural stem cells in rats after ischemic stroke.
Abstract Stem cells hold great promise as a regenerative therapy for ischemic stroke by improving functional outcomes in animal models. However, there are some limitations regarding the cell transplantation, including low rate of survival and differentiation. Repetitive transcranial magnetic stimulation (rTMS) has been widely used in clinical trials as post-stroke rehabilitation in ischemic stroke and has shown to alleviate functional deficits following stroke. The present study was designed to evaluate the therapeutic effects and mechanisms of combined human neural stem cells (hNSCs) with rTMS in a middle cerebra...
Source: Experimental Neurology - December 4, 2018 Category: Neurology Authors: Peng JJ, Sha R, Li MX, Chen LT, Han XH, Guo F, Chen H, Huang XL Tags: Exp Neurol Source Type: research

Human placenta mesenchymal stem cell protection in ischemic stroke is Angiotensin converting enzyme ‐2 (ACE‐2) and masR receptor dependent
In this study we demonstrated that hPMSC-derived ACE2 is required to protect against progressive loss of cerebral blood perfusion following ischemic stroke. This effect is also mediated through vascular endothelial Mas receptor but not AT2 receptor. Consequently, the results of our experimental stroke studies with human derived stem cells describes new paracrine function of hPMSC in which ACE2 and Mas receptor are critical, therefore, providing a novel therapeutic strategy for stroke in near future.
Source: Stem Cells - June 15, 2021 Category: Stem Cells Authors: Mansoureh Barzegar, Shantel Vital, Karen Y. Stokes, Yuping Wang, J. Winny Yun, Luke A. White, Oleg Chernyshev, Roger E. Kelley, Jonathan S. Alexander Tags: Regenerative Medicine Source Type: research

Neural Stem Cells Therapy for Ischemic Stroke: Progress and Challenges
Transl Stroke Res. 2022 Jan 15. doi: 10.1007/s12975-022-00984-y. Online ahead of print.ABSTRACTIschemic stroke, with its high morbidity and mortality, is the most common cerebrovascular accident and results in severe neurological deficits. Despite advances in medical and surgical intervention, post-stroke therapies remain scarce, which seriously affects the quality of life of patients. Over the past decades, stem cell transplantation has been recognized as very promising therapy for neurological diseases. Neural stem cell (NSC) transplantation is the optimal choice for ischemic stroke as NSCs inherently reside in the brain...
Source: Cell Research - January 15, 2022 Category: Cytology Authors: Tong Zhao Tongming Zhu Liqian Xie Yao Li Rong Xie Feng Xu Hailiang Tang Jianhong Zhu Source Type: research

Humanized cerebral organoids-based ischemic stroke model for discovering of potential anti-stroke agents
In this study we compared the cell composition of COs at different culture time and explored the cell types, cell ratios and volume size of COs at 85 days (85 d-CO). The 85 d-CO with diameter more than 2 mm was chosen for establishing humanized ischemic stroke model of OGD. By determining the time-injury relationship of the model, we observed aggravated ischemic injury of COs with OGD exposure time, obtaining first-hand evidence for the damage degree of COs under different OGD condition. The sensitivity of the model to ischemic injury and related treatment was validated by the proven pan-Caspase inhibitor Z-VAD-FMK (20 μM...
Source: Acta Pharmacologica Sinica - September 13, 2022 Category: Drugs & Pharmacology Authors: Shu-Na Wang Zhi Wang Xi-Yuan Wang Xiu-Ping Zhang Tian-Ying Xu Chao-Yu Miao Source Type: research

Minor Changes for a Major Impact: A Review of Epigenetic Modifications in Cell-Based Therapies for Stroke
Int J Mol Sci. 2022 Oct 28;23(21):13106. doi: 10.3390/ijms232113106.ABSTRACTEpigenetic changes in stroke may revolutionize cell-based therapies aimed at reducing ischemic stroke risk and damage. Epigenetic changes are a novel therapeutic target due to their specificity and potential for reversal. Possible targets for epigenetic modification include DNA methylation and demethylation, post-translational histone modification, and the actions of non-coding RNAs such as microRNAs. Many of these epigenetic modifications have been reported to modulate atherosclerosis development and progression, ultimately contributing to stroke ...
Source: Atherosclerosis - November 11, 2022 Category: Cardiology Authors: Molly Monsour Jonah Gordon Gavin Lockard Adam Alayli Bassel Elsayed Jacob Connolly Cesar V Borlongan Source Type: research

Research hotspots and frotiers of stem cells in stroke: A bibliometric analysis from 2004 to 2022
Conclusion: Between 2004 and 2022, the terms “neurogenesis,” “angiogenesis,” “mesenchymal stem cells,” “extracellular vesicle,” “exosomes,” “inflammation,” and “oxidative stress” have emerged as the hot research areas for research on stem cells in stroke. Although stem cells exert a number of positive effects, the main mechanisms for mitigating the damage caused by stroke are still unknown. Clinical challenges may include complicating factors that can affect the efficacy of stem cell therapy, which are worth a deep exploration.
Source: Frontiers in Pharmacology - March 3, 2023 Category: Drugs & Pharmacology Source Type: research

Intravenous transplantation of mesenchymal stem cells preconditioned with early phase stroke serum: current evidence and study protocol for a randomized trial
DiscussionThis trial is the first to evaluate the efficacy of MSCs in patients with ischemic stroke. The results may provide better evidence for the effectiveness of MSC therapy in patients with ischemic stroke.Trial registrationThis trial was registered with ClinicalTrials.gov, number NCT01716481.
Source: Trials - October 1, 2013 Category: Journals (General) Authors: Suk Jae KimGyeong Joon MoonWon Hyuk ChangYun-Hee KimOh Young Bang Source Type: research

Electroacupuncture promotes neural stem cell proliferation and neurogenesis in the dentate gyrus of rats following stroke via upregulation of Notch1 expression.
In conclusion, to the best of our knowledge, the present study was the first to demonstrate that EA treatment promoted NSC proliferation and neurogenesis in the DG area through the upregulation of Notch signaling following a stroke; therefore, EA may be a useful novel therapeutic strategy in future stroke treatment. PMID: 26328605 [PubMed - as supplied by publisher]
Source: Molecular Medicine Reports - September 4, 2015 Category: Molecular Biology Tags: Mol Med Rep Source Type: research

Mesenchymal stem cells in the treatment of ischemic stroke: progress and possibilities.
Authors: Doeppner TR, Hermann DM Abstract Stroke is a major cause of death and long-term disability in industrialized countries, and the only causal therapy for stroke comprises recombinant tissue plasminogen activator(rt-PA)-mediated recanalization of the occluded vessel. New experimental strategies focus on neuroregenerative approaches, among which the application of mesenchymal stem cells (MSCs) has gained increasing attention. MSCs, like other stem cells, have the capacity of unlimited self-renewal giving rise to differentiated cells from various cell lineages. Bone marrow (BM)-derived MSCs are the most frequen...
Source: Stem Cells and Cloning: Advances and Applications - December 1, 2015 Category: Stem Cells Tags: Stem Cells Cloning Source Type: research

Extracellular Vesicles Improve Post-Stroke Neuroregeneration and Prevent Postischemic Immunosuppression
Although the initial concepts of stem cell therapy aimed at replacing lost tissue, more recent evidence has suggested that stem and progenitor cells alike promote postischemic neurological recovery by secreted factors that restore the injured brain’s capacity to reshape. Specifically, extracellular vesicles (EVs) derived from stem cells such as exosomes have recently been suggested to mediate restorative stem cell effects. In order to define whether EVs indeed improve postischemic neurological impairment and brain remodeling, we systematically compared the effects of mesenchymal stem cell (MSC)-derived EVs (MSC-EVs) ...
Source: Stem Cells Translational Medicine - September 17, 2015 Category: Stem Cells Authors: Doeppner, T. R., Herz, J., Gorgens, A., Schlechter, J., Ludwig, A.-K., Radtke, S., de Miroschedji, K., Horn, P. A., Giebel, B., Hermann, D. M. Tags: Enabling Technologies for Cell-Based Clinical Translation, Mesenchymal Stem Cells Source Type: research