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Yang Q, Zhang H, Jin Z, Zhang B, Wang Y. Effects of Valproic Acid Therapy on Rats with Spinal Cord Injury: A Systematic Review and Meta-Analysis. World Neurosurg 2024; 182:12-28. [PMID: 37923014 DOI: 10.1016/j.wneu.2023.10.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/27/2023] [Accepted: 10/28/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVE To systematically evaluate the efficacy of valproic acid (VPA) in rats with spinal cord injury (SCI) to reduce the risk of clinical conversion and provide a valuable reference for future animal and clinical studies. METHODS We searched scientific databases, including PubMed, Ovid-Embase, Web of Science, and Scopus databases. The relevant literature was searched from the establishment date of the database to June 28, 2023. The search results were screened, data were extracted, and the quality of the literature was evaluated independently by 2 reviewers. RESULTS Among 656 nonduplicated references, 14 articles were included for meta-analysis. The summary results showed that the overall Basso, Beattie and Bresnahan scores of the VPA intervention group were significantly higher than those in the control group at 1-6 weeks after VPA intervention. Subgroup analysis showed that the injury model, administration dose, rat strain, country of study, or follow-up duration had no significant effect on the efficacy of VPA on rats with SCI. In addition, mesh analysis showed that high doses of the VPA group had a better effect on SCI rats, compared with the low dose group and the medium dose group. CONCLUSIONS To date, this is the first systematic evaluation of the potential effects of VPA on motor recovery in rats with SCI. We concluded that VPA can promote motor recovery in rats with SCI, and higher doses of VPA seem to be more effective in rats with SCI. However, the limited quality and sample of included studies reduced the application of this meta-analysis. In the future, more high-quality, direct comparative studies are needed to explore this issue in depth.
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Affiliation(s)
- Qinglin Yang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Huaibin Zhang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Zhuanmei Jin
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Baolin Zhang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Yongping Wang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China; Department of Orthopedics, The First Hospital of Lanzhou University, Lanzhou, China.
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Sun F, Huang T, Shi J, Wei T, Zhang H. Effect of Valproic Acid on NLR Family Pyrin Domain Containing 1/3 (NLRP1/3) Inflammasome in Rats with Acute Spinal Cord Injury. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.3008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Our study assesses valproic acid’s effect on NLRP1/3 inflammasome in rats with acute spinal cord injury (SCI). SD rats were clamped by aneurysm clips to establish SCI model followed by analysis of functional recovery by BBB score, degree of inflammatory infiltration, by H&E
staining, NLRP1/NLRP3 and P2X7 level by western blot, IL-1β and IL-18 level by ELISA, blood spinal cord barrier by EVANS blue method. After SCI, the lower limb motor function of rats decreased and recovered after valproic acid treatment (P < 0.05). Inflammatory cell infiltration
of SCI group increased and decreased after treatment. After SCI, NLRP1/3 level increased and P2X7 protein level elevated which were reversed after valproic acid treatment (P < 0.05). In rats with SCI, IL-1β level in spinal cord was higher than sham operation and lower
after treatment (P < 0.05) without difference of IL-18 between injury group and treatment group (P > 0.05). In addition, fluorescence was higher in injury group than sham operation group and lower in valproic acid injection group than injury group. In conclusion, Valproic
acid can promote motor function recovery in rats after SCI and inhibit inflammasome 1 and 3 expression, thereby inhibiting the maturation and release of IL-1β, and reducing P2X7 level after SCI.
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Affiliation(s)
- Feng Sun
- Department of Orthopaedic Surgery, General Hospital of General Administration of Agriculture and Reclamation, Harbin, Heilongjiang, 150088, China
| | - Tianwen Huang
- Department of Orthopaedic Surgery, General Hospital of General Administration of Agriculture and Reclamation, Harbin, Heilongjiang, 150088, China
| | - Jianhui Shi
- Department of Orthopaedic Surgery, Heilongjiang Provincial Hospital, Harbin, Heilongjiang, 150036, China
| | - Tianli Wei
- Department of Orthopaedic Surgery, General Hospital of General Administration of Agriculture and Reclamation, Harbin, Heilongjiang, 150088, China
| | - Haiwei Zhang
- Department of Imaging, General Hospital of General Administration of Agriculture and Reclamation, Harbin, Heilongjiang, 150088, China
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Darvishi M, Hamidabadi HG, Bojnordi MN, Saeednia S, Zahiri M, Niapour A, Alizadeh R. Differentiation of human dental pulp stem cells into functional motor neuron: In vitro and ex vivo study. Tissue Cell 2021; 72:101542. [PMID: 33964606 DOI: 10.1016/j.tice.2021.101542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 04/12/2021] [Accepted: 04/12/2021] [Indexed: 12/21/2022]
Abstract
There are several therapeutic options for spinal cord injury (SCI), among these strategies stem cell therapy is a potential treatment. The stem cells based therapies have been investigating in acute phase of clinical trials for promoting spinal repair in humans through replacement of functional neuronal and glial cells. The aim of this study was to evaluate the differentiation of Human Dental Pulp Stem Cells (hDPSCs) into functional motor neuron like cells (MNLCs) and promote neuroregeneration by stimulating local neurogenesis in the adult spinal cord slice culture. The immunocytochemistry analysis demonstrated that hDPSCs were positive for mesenchymal stem cell markers (CD73, CD90 and CD105) and negative for the hematopoietic markers (CD34 and CD45). hDPSCs were induced to neurospheres (via implementing B27, EGF, and bFGF) and then neural stem cells (NSC). The NSC differentiated into MNLCs in two steps: first by Shh and RA and ; then with GDNF and BDNF administration. The NS and the NSC were assessed for Oct4, nestin, Nanog, Sox2 expression while the MNLCs were evaluated by ISLET1, Olig2, and HB9 genes. Our results showed that hDPSC can be differentiated into motor neuron phenotype with expression of the motor neuron genes. The functionality of MNLCs was demonstrated by FM1-43, intracellular calcium ion shift and co- culture with C2C12. We co-cultivated hDPSCs with adult rat spinal slices in vitro. Immunostaining and hoechst assay showed that hDPSCs were able to migrate, proliferate and integrate in both the anterolateral zone and the edges of the spinal slices.
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Affiliation(s)
- Marzieh Darvishi
- Department of Anatomy, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran; Shefa Neuroscience Research Center, Khatam Alanbia Hospital, Tehran, Iran
| | - Hatef Ghasemi Hamidabadi
- Department of Anatomy & Cell Biology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; Immunogenetic Research Center, Department of Anatomy & Cell Biology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Maryam Nazm Bojnordi
- Department of Anatomy & Cell Biology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; Immunogenetic Research Center, Department of Anatomy & Cell Biology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sara Saeednia
- Department of Basic Sciences, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Maria Zahiri
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Ali Niapour
- Research Laboratory for Embryology and Stem Cells, Department of Anatomical Sciences, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Rafieh Alizadeh
- ENT and Head & Neck Research Center and Department, Hazrat Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
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Wang D, Wang K, Liu Z, Wang Z, Wu H. Valproic Acid Labeled Chitosan Nanoparticles Promote the Proliferation and Differentiation of Neural Stem Cells After Spinal Cord Injury. Neurotox Res 2021; 39:456-466. [PMID: 33247828 DOI: 10.1007/s12640-020-00304-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/05/2020] [Accepted: 10/21/2020] [Indexed: 12/12/2022]
Abstract
Chitosan nanoparticles and valproic acid are demonstrated as the protective agents in the treatment of spinal cord injury (SCI). However, the effects of valproic acid-labeled chitosan nanoparticles (VA-CN) on endogenous spinal cord neural stem cells (NSCs) following SCI and the underlying mechanisms involved remain to be elucidated. In this study, the VA-CN was constructed and the effects of VA-CN on NSCs were assessed in a rat model of SCI. We found VA-CN treatment promoted recovery of the tissue and locomotive function following SCI. Moreover, administration of VA-CN significantly enhanced neural stem cell proliferation and the expression levels of neurotrophic factors following SCI. Furthermore, administration of VA-CN led to a decrease in the number of microglia following SCI. In addition, VA-CN treatment significantly increased the Tuj 1- positive cells in the spinal cord of the SCI rats, suggesting that VA-CN could enhance the differentiation of NSCs following SCI. In conclusion, these results demonstrated that VA-CN could improve the functional and histological recovery through promoting the proliferation and differentiation of NSCs following SCI, which would provide a newly potential therapeutic manner for the treatment of SCI.
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Affiliation(s)
- Dimin Wang
- School of Medicine, Zhejiang University, Hangzhou, China
- College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Kai Wang
- Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Zhenlei Liu
- Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Zonglin Wang
- College of Basic Medical Sciences, Second Military Medical University, Shanghai, China
| | - Hao Wu
- Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing, China.
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Pandamooz S, Salehi MS, Zibaii MI, Safari A, Nabiuni M, Ahmadiani A, Dargahi L. Modeling traumatic injury in organotypic spinal cord slice culture obtained from adult rat. Tissue Cell 2019; 56:90-97. [DOI: 10.1016/j.tice.2019.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/04/2018] [Accepted: 01/08/2019] [Indexed: 12/16/2022]
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Chen JY, Chu LW, Cheng KI, Hsieh SL, Juan YS, Wu BN. Valproate reduces neuroinflammation and neuronal death in a rat chronic constriction injury model. Sci Rep 2018; 8:16457. [PMID: 30405207 PMCID: PMC6220313 DOI: 10.1038/s41598-018-34915-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 10/29/2018] [Indexed: 01/08/2023] Open
Abstract
Valproate (VPA) is a well-known drug for treating epilepsy and mania, but its action in neuropathic pain is unclear. We used a chronic constriction injury (CCI) model to explore whether VPA prevents neuropathic pain-mediated inflammation and neuronal death. Rats were treated with or without VPA. CCI + VPA rats were intraperitoneally injected with VPA (300 mg/kg/day) from postoperative day (POD) 1 to 14. We measured paw withdrawal latency (PWL) and paw withdrawal threshold (PWT) 1 day before surgery and 1, 3, 7, 14 days after CCI and harvested the sciatic nerves (SN), spinal cord (SC) and dorsal root ganglia (DRG) on POD 3, 7, and 14. PWL and PWT were reduced in CCI rats, but increased in CCI + VPA rats on POD 7 and POD 14. VPA lowered CCI-induced inflammatory proteins (pNFκB, iNOS and COX-2), pro-apoptotic proteins (pAKT/AKT and pGSK-3β/GSK-3β), proinflammatory cytokines (TNF-α and IL-1β) and nuclear pNFκB activation in the SN, DRG and SC in CCI rats. COX-2 and pGSK-3 proteins were decreased by VPA on immunofluorescence analysis. VPA attenuated CCI-induced thermal and mechanical pain behaviors in rats in correlation with anti-neuroinflammation action involving reduction of pNFκB/iNOS/COX-2 activation and inhibition of pAKT/pGSK-3β-mediated neuronal death from injury to peripheral nerves.
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Affiliation(s)
- Jun-Yih Chen
- Division of Neurosurgery, Fooyin University Hospital, Pingtung, Taiwan.,School of Nursing, Fooyin University, Kaohsiung, Taiwan
| | - Li-Wen Chu
- Department of Pharmacology, Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Yuh-Ing Junior College of Health Care and Management, Kaohsiung, Taiwan
| | - Kuang-I Cheng
- Department of Anesthesiology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Su-Ling Hsieh
- Department of Pharmacy, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yung-Shun Juan
- Department of Urology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Urology, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Bin-Nan Wu
- Department of Pharmacology, Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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Pandamooz S, Salehi MS, Zibaii MI, Ahmadiani A, Nabiuni M, Dargahi L. Epidermal neural crest stem cell-derived glia enhance neurotrophic elements in an ex vivo model of spinal cord injury. J Cell Biochem 2018; 119:3486-3496. [PMID: 29143997 DOI: 10.1002/jcb.26520] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 11/13/2017] [Indexed: 01/09/2023]
Abstract
Growing evidence that cell-based therapies can improve recovery outcome in spinal cord injury (SCI) models substantiates their application for treatment of human with SCI. To address the effectiveness of these stem cells, potential candidates should be evaluated in proper SCI platform that allows direct real-time monitoring. In this study, the role of epidermal neural crest stem cells (EPI-NCSCs) was elucidated in an ex vivo model of SCI, and valproic acid (VPA) was administered to ameliorate the inhospitable context of injury for grafted EPI-NCSCs. Here the contusion was induced in organotypic spinal cord slice culture at day seven in vitro using a weight drop device and one hour post injury the GFP- expressing EPI-NCSCs were grafted followed by VPA administration. The evaluation of treated slices seven days after injury revealed that grafted stem cells survived on the injured slices and expressed GFAP, whereas they did not express any detectable levels of the neural progenitor marker doublecortin (DCX), which was expressed prior to transplantation. Immunoblotting data demonstrated that the expression of GFAP, BDNF, neurotrophin-3 (NT3), and Bcl2 increased significantly in stem cell treated slices. This study illustrated that the fate of transplanted stem cells has been directed to the glial lineage in the ex vivo context of injury and EPI-NCSCs may ameliorate the SCI condition through releasing neurotrophic factors directly and/or via inducing resident spinal cord cells.
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Affiliation(s)
- Sareh Pandamooz
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Animal Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Mohammad S Salehi
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad I Zibaii
- Laser and Plasma Research institute, Shahid Beheshti University, Tehran, Iran
| | - Abolhassan Ahmadiani
- Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Nabiuni
- Department of Animal Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Leila Dargahi
- NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Bath KG, Pimentel T. Effect of early postnatal exposure to valproate on neurobehavioral development and regional BDNF expression in two strains of mice. Epilepsy Behav 2017; 70:110-117. [PMID: 28412607 PMCID: PMC5438900 DOI: 10.1016/j.yebeh.2017.02.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 02/06/2023]
Abstract
Valproate has been used for over 30years as a first-line treatment for epilepsy. In recent years, prenatal exposure to valproate has been associated with teratogenic effects, limiting its use in women that are pregnant or of childbearing age. However, despite its potential detrimental effects on development, valproate continues to be prescribed at high rates in pediatric populations in some countries. Animal models allow us to test hypotheses regarding the potential effects of postnatal valproate exposure on neurobehavioral development, as well as identify potential mechanisms mediating observed effects. Here, we tested the effect of early postnatal (P4-P11) valproate exposure (100mg/kg and 200mg/kg) on motor and affective development in two strains of mice, SVE129 and C57Bl/6N. We also assessed the effect of early valproate exposure on regional BDNF protein levels, a potential target of valproate, and mediator of neurodevelopmental outcomes. We found that early life valproate exposure led to significant motor impairments in both SVE129 and C57Bl/6N mice. Both lines of mice showed significant delays in weight gain, as well as impairments in the righting reflex (P7-8), wire hang (P17), open field (P12 and P21), and rotarod (P25 and P45) tasks. Interestingly, some of the early locomotor effects were strain- and dose-dependent. We observed no effects of valproate on early markers of anxiety-like behavior. Importantly, early life valproate exposure had significant effects on regional BDNF expression, leading to a near 50% decrease in BDNF levels in the cerebellum of both strains of mice, while not impacting hippocampal BDNF protein levels. These observations indicate that postnatal exposure to valproate may have significant, and region-specific effects, on neural and behavioral development, with specific consequences for cerebellar development and motor function.
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Affiliation(s)
- Kevin G. Bath
- Department of Cognitive, Linguistic, and Psychological Sciences, Brown University, Providence RI, 02912
| | - Tiare Pimentel
- Department of Neuroscience, Brown University, Providence, RI, 02912
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