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Jin MH, Liu XD, Sun HN, Han YH, Kwon T. Peroxiredoxin II exerts neuroprotective effects by inhibiting endoplasmic reticulum stress and oxidative stress-induced neuronal pyroptosis. Mol Biol Rep 2024; 51:607. [PMID: 38704801 DOI: 10.1007/s11033-024-09568-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/18/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Intracerebral hemorrhage (ICH) is a critical neurological condition with few treatment options, where secondary immune responses and specific cell death forms, like pyroptosis, worsen brain damage. Pyroptosis involves gasdermin-mediated membrane pores, increasing inflammation and neural harm, with the NLRP3/Caspase-1/GSDMD pathway being central to this process. Peroxiredoxin II (Prx II), recognized for its mitochondrial protection and reactive oxygen species (ROS) scavenging abilities, appears as a promising neuronal pyroptosis modulator. However, its exact role and action mechanisms need clearer definition. This research aims to explore Prx II impact on neuronal pyroptosis and elucidate its mechanisms, especially regarding endoplasmic reticulum (ER) stress and oxidative stress-induced neuronal damage modulation. METHODS AND RESULTS Utilizing MTT assays, Microscopy, Hoechst/PI staining, Western blotting, and immunofluorescence, we found Prx II effectively reduces LPS/ATP-induced pyroptosis and neuroinflammation in HT22 hippocampal neuronal cells. Our results indicate Prx II's neuroprotective actions are mediated through PI3K/AKT activation and ER stress pathway inhibition, diminishing mitochondrial dysfunction and decreasing neuronal pyroptosis through the ROS/MAPK/NF-κB pathway. These findings highlight Prx II potential therapeutic value in improving intracerebral hemorrhage outcomes by lessening secondary brain injury via critical signaling pathway modulation involved in neuronal pyroptosis. CONCLUSIONS Our study not only underlines Prx II importance in neuroprotection but also opens new therapeutic intervention avenues in intracerebral hemorrhage, stressing the complex interplay between redox regulation, ER stress, and mitochondrial dynamics in neuroinflammation and cell death management.
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Affiliation(s)
- Mei-Hua Jin
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Xiao-Dong Liu
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Hu-Nan Sun
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China
| | - Ying-Hao Han
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.
| | - Taeho Kwon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Jeongeup-si, Jeonbuk, 56216, Republic of Korea.
- Department of Applied Biological Engineering, KRIBB School of Biotechnology, Korea National University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
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2
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Wan Y, Fu X, Zhang T, Hua Y, Keep RF, Xi G. Choroid plexus immune cell response in murine hydrocephalus induced by intraventricular hemorrhage. Fluids Barriers CNS 2024; 21:37. [PMID: 38654318 PMCID: PMC11036653 DOI: 10.1186/s12987-024-00538-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Intraventricular hemorrhage (IVH) and associated hydrocephalus are significant complications of intracerebral and subarachnoid hemorrhage. Despite proximity to IVH, the immune cell response at the choroid plexus (ChP) has been relatively understudied. This study employs CX3CR-1GFP mice, which marks multiple immune cell populations, and immunohistochemistry to outline that response. METHODS This study had four parts all examining male adult CX3CR-1GFP mice. Part 1 examined naïve mice. In part 2, mice received an injection 30 µl of autologous blood into right ventricle and were euthanized at 24 h. In part 3, mice underwent intraventricular injection of saline, iron or peroxiredoxin 2 (Prx-2) and were euthanized at 24 h. In part 4, mice received intraventricular iron injection and were treated with either control or clodronate liposomes and were euthanized at 24 h. All mice underwent magnetic resonance imaging to quantify ventricular volume. The ChP immune cell response was examined by combining analysis of GFP(+) immune cells and immunofluorescence staining. RESULTS IVH and intraventricular iron or Prx-2 injection in CX3CR-1GFP mice all induced ventriculomegaly and activation of ChP immune cells. There were very marked increases in the numbers of ChP epiplexus macrophages, T lymphocytes and neutrophils. Co-injection of clodronate liposomes with iron reduced the ventriculomegaly which was associated with fewer epiplexus and stromal macrophages but not reduced T lymphocytes and neutrophils. CONCLUSION There is a marked immune cell response at the ChP in IVH involving epiplexus cells, T lymphocytes and neutrophils. The blood components iron and Prx-2 may play a role in eliciting that response. Reduction of ChP macrophages with clodronate liposomes reduced iron-induced ventriculomegaly suggesting that ChP macrophages may be a promising therapeutic target for managing IVH-induced hydrocephalus.
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Affiliation(s)
- Yingfeng Wan
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA.
- R5018 Biomedical Science Research Building, University of Michigan, 109 Zina Pitcher Place, 48109-2200, Ann Arbor, MI, USA.
| | - Xiongjie Fu
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Tianjie Zhang
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
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Rodriguez-Perez LM, Ojeda-Pérez B, López-de-San-Sebastián J, García-Bonilla M, González-García M, Fernández-Muñoz B, Sánchez-Pernaute R, García-Martín ML, Domínguez-Pinos D, Cárdenas-García C, Jiménez AJ, Paez-Gonzalez P. Design of a Stem Cell-Based Therapy for Ependymal Repair in Hydrocephalus Associated With Germinal Matrix Hemorrhages. Stroke 2024; 55:1062-1074. [PMID: 38436063 PMCID: PMC10962438 DOI: 10.1161/strokeaha.123.044677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 01/24/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND In preterm birth germinal matrix hemorrhages (GMHs) and the consequent posthemorrhagic hydrocephalus (PHH), the neuroepithelium/ependyma development is disrupted. This work is aimed to explore the possibilities of ependymal repair in GMH/PHH using a combination of neural stem cells, ependymal progenitors (EpPs), and mesenchymal stem cells. METHODS GMH/PHH was induced in 4-day-old mice using collagenase, blood, or blood serum injections. PHH severity was characterized 2 weeks later using magnetic resonance, immunofluorescence, and protein expression quantification with mass spectrometry. Ependymal restoration and wall regeneration after stem cell treatments were tested in vivo and in an ex vivo experimental approach using ventricular walls from mice developing moderate and severe GMH/PHH. The effect of the GMH environment on EpP differentiation was tested in vitro. Two-tailed Student t or Wilcoxon-Mann-Whitney U test was used to find differences between the treated and nontreated groups. ANOVA and Kruskal-Wallis tests were used to compare >2 groups with post hoc Tukey and Dunn multiple comparison tests, respectively. RESULTS PHH severity was correlated with the extension of GMH and ependymal disruption (means, 88.22% severe versus 19.4% moderate). GMH/PHH hindered the survival rates of the transplanted neural stem cells/EpPs. New multiciliated ependymal cells could be generated from transplanted neural stem cells and more efficiently from EpPs (15% mean increase). Blood and TNFα (tumor necrosis factor alpha) negatively affected ciliogenesis in cells committed to ependyma differentiation (expressing Foxj1 [forkhead box J1] transcription factor). Pretreatment with mesenchymal stem cells improved the survival rates of EpPs and ependymal differentiation while reducing the edematous (means, 18% to 0.5% decrease in severe edema) and inflammatory conditions in the explants. The effectiveness of this therapeutical strategy was corroborated in vivo (means, 29% to 0% in severe edema). CONCLUSIONS In GMH/PHH, the ependyma can be restored and edema decreased from either neural stem cell or EpP transplantation in vitro and in vivo. Mesenchymal stem cell pretreatment improved the success of the ependymal restoration.
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Affiliation(s)
- Luis M Rodriguez-Perez
- Departamento de Fisiología Humana, Histología Humana, Anatomía Patológica y Educación Física y Deportiva, University of Malaga, Spain. (L.M.R.-P.)
| | - Betsaida Ojeda-Pérez
- Departamento de Biología Celular, Genética y Fisiología, University of Malaga, Spain. (B.O.-P., J.L.-d.-S.-S., M.G.-G.)
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
| | - Javier López-de-San-Sebastián
- Departamento de Biología Celular, Genética y Fisiología, University of Malaga, Spain. (B.O.-P., J.L.-d.-S.-S., M.G.-G.)
| | - María García-Bonilla
- Department of Neurosurgery, Washington University in St. Louis School of Medicine, MO (M.G.-B.)
| | - Marcos González-García
- Departamento de Biología Celular, Genética y Fisiología, University of Malaga, Spain. (B.O.-P., J.L.-d.-S.-S., M.G.-G.)
| | - Beatriz Fernández-Muñoz
- Unidad de Producción y Reprogramación Celular, Red Andaluza para el diseño y traslación de Terapias Avanzadas, Sevilla, Spain (B.F.-M.)
| | - Rosario Sánchez-Pernaute
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain (R.S.-P.)
- Instituto de Investigación Sanitaria Biobizkai, Barakaldo, Spain (R.S.-P.)
| | - María L García-Martín
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina, Spain (M.L.G.-M.)
| | - Dolores Domínguez-Pinos
- Departamento de Radiología y Medicina Física, Oftalmología y Otorrinolaringología, University of Malaga, Spain. (D.D.-P.)
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
| | | | - Antonio J Jiménez
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
| | - Patricia Paez-Gonzalez
- Instituto de Investigación Biomédica de Málaga, Spain (B.O.-P., M.L.G.-M., D.D.-P., A.J.J., P.P.-G.)
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Du Y, Wang J, Zhang J, Li N, Li G, Liu X, Lin Y, Wang D, Kang K, Bian L, Zhao X. Intracerebral hemorrhage-induced brain injury in mice: The role of peroxiredoxin 2-Toll-like receptor 4 inflammatory axis. CNS Neurosci Ther 2024; 30:e14681. [PMID: 38516845 PMCID: PMC10958402 DOI: 10.1111/cns.14681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Peroxiredoxin 2 (Prx2), an intracellular protein that regulates redox reactions, released from red blood cells is involved in inflammatory brain injury after intracerebral hemorrhage (ICH). Toll-like receptor 4 (TLR4) may be crucial in this process. This study investigated the role of the Prx2-TLR4 inflammatory axis in brain injury following experimental ICH in mice. METHODS First, C57BL/6 mice received an intracaudate injection of autologous arterial blood or saline and their brains were harvested on day 1 to measure Prx2 levels. Second, mice received an intracaudate injection of either recombinant mouse Prx2 or saline. Third, the mice were co-injected with autologous arterial blood and conoidin A, a Prx2 inhibitor, or vehicle. Fourth, the mice received a Prx2 injection and were treated with TAK-242, a TLR4 antagonist, or saline (intraperitoneally). Behavioral tests, magnetic resonance imaging, western blot, immunohistochemistry/immunofluorescence staining, and RNA sequencing (RNA-seq) were performed. RESULTS Brain Prx2 levels were elevated after autologous arterial blood injection. Intracaudate injection of Prx2 caused brain swelling, microglial activation, neutrophil infiltration, neuronal death, and neurological deficits. Co-injection of conoidin A attenuated autologous arterial blood-induced brain injury. TLR4 was expressed on the surface of microglia/macrophages and neutrophils and participated in Prx2-induced inflammation. TAK-242 treatment attenuated Prx2-induced inflammation and neurological deficits. CONCLUSIONS Prx2 can cause brain injury following ICH through the TLR4 pathway, revealing the Prx2-TLR4 inflammatory axis as a potential therapeutic target.
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Affiliation(s)
- Yang Du
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Jinjin Wang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Jia Zhang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Ning Li
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Guangshuo Li
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Xinmin Liu
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Yijun Lin
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Dandan Wang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Kaijiang Kang
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Liheng Bian
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
| | - Xingquan Zhao
- Department of NeurologyBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
- China National Clinical Research Center for Neurological DiseasesCapital Medical UniversityBeijingChina
- Laboratory for Clinical MedicineCapital Medical UniversityBeijingChina
- Research Unit of Artificial Intelligence in Cerebrovascular DiseaseChinese Academy of Medical SciencesBeijingChina
- Center of Stroke, Beijing Institute for Brain DisordersBeijingChina
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5
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Li Y, Nan D, Liu R, Li J, Zhang Z, Deng J, Zhang Y, Yan Z, Hou C, Yao E, Sun W, Wang Z, Huang Y. Aquaporin 4 Mediates the Effect of Iron Overload on Hydrocephalus After Intraventricular Hemorrhage. Neurocrit Care 2024; 40:225-236. [PMID: 37208490 PMCID: PMC10861395 DOI: 10.1007/s12028-023-01746-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/01/2023] [Indexed: 05/21/2023]
Abstract
BACKGROUND Iron overload plays an important role in hydrocephalus development following intraventricular hemorrhage (IVH). Aquaporin 4 (AQP4) participates in the balance of cerebrospinal fluid secretion and absorption. The current study investigated the role of AQP4 in the formation of hydrocephalus caused by iron overload after IVH. METHODS There were three parts to this study. First, Sprague-Dawley rats received an intraventricular injection of 100 µl autologous blood or saline control. Second, rats had IVH and were treated with deferoxamine (DFX), an iron chelator, or vehicle. Third, rats had IVH and were treated with 2-(nicotinamide)-1,3,4-thiadiazole (TGN-020), a specific AQP4 inhibitor, or vehicle. Rats underwent T2-weighted and T2* gradient-echo magnetic resonance imaging to assess lateral ventricular volume and intraventricular iron deposition at 7, 14, and 28 days after intraventricular injection and were then euthanized. Real-time quantitative polymerase chain reaction, western blot analysis, and immunofluorescence analyses were conducted on the rat brains to evaluate the expression of AQP4 at different time points. Hematoxylin and eosin-stained brain sections were obtained to assess the ventricular wall damage on day 28. RESULTS Intraventricular injection of autologous blood caused a significant ventricular dilatation, iron deposition, and ventricular wall damage. There was increased AQP4 mRNA and protein expression in the periventricular tissue in IVH rats through day 7 to day 28. The DFX treatment group had a lower lateral ventricular volume and less intraventricular iron deposition and ventricular wall damage than the vehicle-treated group after IVH. The expression of AQP4 protein in periventricular tissue was also inhibited by DFX on days 14 and 28 after IVH. The use of TGN-020 attenuated hydrocephalus development after IVH and inhibited the expression of AQP4 protein in the periventricular tissue between day 14 and day 28 without a significant effect on intraventricular iron deposition or ventricular wall damage. CONCLUSIONS AQP4 located in the periventricular area mediated the effect of iron overload on hydrocephalus after IVH.
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Affiliation(s)
- Ying Li
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Ding Nan
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
- Department of Hyperbaric Oxygen, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Ran Liu
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Jieyu Li
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Zhuangzhuang Zhang
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Jianwen Deng
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Yang Zhang
- Department of Neurosurgery, Peking University First Hospital, Beijing, China
| | - Ziguang Yan
- Department of Interventional Radiology and Vascular Surgery, Peking University First Hospital, Beijing, China
| | - Chao Hou
- Department of Radiology, Peking University First Hospital, Beijing, China
| | - Ensheng Yao
- Department of Neurology, First Affiliated Hospital, School of Medicine, Shihezi University, Xinjiang, China
| | - Weiping Sun
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China.
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China.
| | - Zhaoxia Wang
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
| | - Yining Huang
- Department of Neurology, Peking University First Hospital, 8 Xishiku Street, Xicheng District, Beijing, 100034, China
- Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing, China
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Zhan X, Li J, Zeng R, Lei L, Feng A, Yang Z. MiR-92a-2-5p suppresses esophageal squamous cell carcinoma cell proliferation and invasion by targeting PRDX2. Exp Cell Res 2024; 435:113925. [PMID: 38211680 DOI: 10.1016/j.yexcr.2024.113925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/09/2023] [Accepted: 01/04/2024] [Indexed: 01/13/2024]
Abstract
MicroRNAs (miRNAs) can function as negative regulators of gene expression by binding to the 3'-untranslated region (3'-UTR) of target genes. The aberrant expression of miRNAs in neoplasm is extensively associated with tumorigenesis and cancer progression, including esophageal squamous cell carcinoma (ESCC). Our previous investigation has identified the oncogenic roles of Peroxiredoxin2 (PRDX2) in ESCC progression; however, its upstream regulatory mechanism remains to be elucidated. By merging the prediction results from miRWalk2.0 and miRNA differential expression analysis results based on The Cancer Genome Atlas Esophageal Carcinoma (TCGA-ESCA) database, eight miRNA candidates were predicted to be the potential regulatory miRNAs of PRDX2, followed by further identification of miR-92a-2-5p as the putative miRNA of PRDX2. Subsequent functional studies demonstrated that miR-92a-2-5p can suppress ESCC cell proliferation and migration, as well as tumor growth in subcutaneous tumor xenograft models, which might be mediated by the suppression of AKT/mTOR and Wnt3a/β-catenin signaling pathways upon miR-92a-2-5p mimic transfection condition. These data revealed the tumor suppressive functions of miR-92a-2-5p in ESCC by targeting PRDX2.
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Affiliation(s)
- Xiang Zhan
- Tumor Research and Therapy Center, Shandong Provincial Hospital, Shandong University, 250021, Jinan, Shandong, China.
| | - Jixian Li
- Tumor Research and Therapy Center, Shandong Provincial Hospital, Shandong University, 250021, Jinan, Shandong, China.
| | - Renya Zeng
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021, Jinan, Shandong, China.
| | - Lingli Lei
- Tumor Research and Therapy Center, Shandong Provincial Hospital, Shandong University, 250021, Jinan, Shandong, China.
| | - Alei Feng
- Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021, Jinan, Shandong, China.
| | - Zhe Yang
- Tumor Research and Therapy Center, Shandong Provincial Hospital, Shandong University, 250021, Jinan, Shandong, China; Tumor Research and Therapy Center, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021, Jinan, Shandong, China.
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7
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Chen L, Sun Y, Li J, Liu S, Ding H, Wang G, Li X. Assessing Cannabidiol as a Therapeutic Agent for Preventing and Alleviating Alzheimer's Disease Neurodegeneration. Cells 2023; 12:2672. [PMID: 38067101 PMCID: PMC10705747 DOI: 10.3390/cells12232672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/03/2023] [Accepted: 11/16/2023] [Indexed: 12/18/2023] Open
Abstract
Alzheimer's disease (AD) is a leading neurodegenerative condition causing cognitive and memory decline. With small-molecule drugs targeting Aβ proving ineffective, alternative targets are urgently needed. Neuroinflammation, which is central to AD's pathology, results in synaptic and neuronal damage, highlighting the importance of addressing inflammation and conserving neuronal integrity. Cannabidiol (CBD), derived from cannabis, is noted for its neuroprotective and anti-inflammatory properties, having shown efficacy in neuropathic pain management for epilepsy. To investigate the therapeutic efficacy of CBD in AD and to elucidate its underlying mechanisms, we aimed to contribute valuable insights for incorporating AD prevention recommendations into future CBD nutritional guidelines. Aβ1-42 was employed for in vivo or in vitro model establishment, CBD treatment was utilized to assess the therapeutic efficacy of CBD, and RNA-seq analysis was conducted to elucidate the underlying therapeutic mechanism. CBD mitigates Aβ-induced cognitive deficits by modulating microglial activity, promoting neurotrophic factor release, and regulating inflammatory genes. The administration of CBD demonstrated a protective effect against Aβ toxicity both in vitro and in vivo, along with an amelioration of cognitive impairment in mice. These findings support the potential inclusion of CBD in future nutritional guidelines for Alzheimer's disease prevention.
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Affiliation(s)
- Long Chen
- Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
| | - Yuan Sun
- Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
| | - Jinran Li
- Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
| | - Sai Liu
- Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
| | - Hancheng Ding
- Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
| | - Guangji Wang
- Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
| | - Xinuo Li
- Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 639 Longmian Avenue, Nanjing 211166, China
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8
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Szeliga M, Rola R. Conoidin A, a Covalent Inhibitor of Peroxiredoxin 2, Reduces Growth of Glioblastoma Cells by Triggering ROS Production. Cells 2023; 12:1934. [PMID: 37566013 PMCID: PMC10417327 DOI: 10.3390/cells12151934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 08/12/2023] Open
Abstract
Compounds that cause oxidative stress have recently gained considerable interest as potential anticancer treatment modalities. Nevertheless, their efficiency may be diminished by the antioxidant systems often upregulated in cancer cells. Peroxiredoxins (PRDXs) are antioxidant enzymes that scavenge peroxides and contribute to redox homeostasis. They play a role in carcinogenesis and are upregulated in several cancer types. Here, we assessed the expression pattern of PRDX1 and PRDX2 in glioblastoma (GBM) and examined the efficacy of their inhibitors in GBM cell lines and patient-derived GBM cells. Both PRDX1 and PRDX2 were upregulated in GBM compared to non-tumor brain tissues and their considerable amounts were observed in GBM cells. Adenanthin, a compound inhibiting PRDX1 activity, slightly decreased GBM cell viability, while conoidin A (CONA), a covalent PRDX2 inhibitor, displayed high toxicity in GBM cells. CONA elevated the intracellular reactive oxygen species (ROS) level. Pre-treatment with an ROS scavenger protected cells from CONA-induced death, indicating that ROS accumulation plays a crucial role in this phenomenon. Menadione or celecoxib, both of which are ROS-inducing agents, potentiated the anticancer activity of CONA. Collectively, our results unveil PRDX1 and PRDX2 as potential targets for GBM therapy, and substantiate the further exploration of their inhibitors.
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Affiliation(s)
- Monika Szeliga
- Department of Neurotoxicology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 5 Pawińskiego Str., 02-106 Warsaw, Poland
| | - Radosław Rola
- Department of Neurosurgery and Paediatric Neurosurgery, Medical University of Lublin, 8 Jaczewskiego Str., 20-090 Lublin, Poland
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9
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Paez-Gonzalez P, Lopez-de-San-Sebastian J, Ceron-Funez R, Jimenez AJ, Rodríguez-Perez LM. Therapeutic strategies to recover ependymal barrier after inflammatory damage: relevance for recovering neurogenesis during development. Front Neurosci 2023; 17:1204197. [PMID: 37397456 PMCID: PMC10308384 DOI: 10.3389/fnins.2023.1204197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/22/2023] [Indexed: 07/04/2023] Open
Abstract
The epithelium covering the surfaces of the cerebral ventricular system is known as the ependyma, and is essential for maintaining the physical and functional integrity of the central nervous system. Additionally, the ependyma plays an essential role in neurogenesis, neuroinflammatory modulation and neurodegenerative diseases. Ependyma barrier is severely affected by perinatal hemorrhages and infections that cross the blood brain barrier. The recovery and regeneration of ependyma after damage are key to stabilizing neuroinflammatory and neurodegenerative processes that are critical during early postnatal ages. Unfortunately, there are no effective therapies to regenerate this tissue in human patients. Here, the roles of the ependymal barrier in the context of neurogenesis and homeostasis are reviewed, and future research lines for development of actual therapeutic strategies are discussed.
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Affiliation(s)
- Patricia Paez-Gonzalez
- Department of Cell Biology, Genetics and Physiology, University of Malaga, Málaga, Spain
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Málaga, Spain
| | | | - Raquel Ceron-Funez
- Department of Cell Biology, Genetics and Physiology, University of Malaga, Málaga, Spain
| | - Antonio J. Jimenez
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Málaga, Spain
| | - Luis Manuel Rodríguez-Perez
- Department of Cell Biology, Genetics and Physiology, University of Malaga, Málaga, Spain
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, Málaga, Spain
- Department of Human Physiology, Human Histology, Pathological Anatomy and Sports, University of Malaga, Málaga, Spain
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10
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Robert SM, Reeves BC, Kiziltug E, Duy PQ, Karimy JK, Mansuri MS, Marlier A, Allington G, Greenberg ABW, DeSpenza T, Singh AK, Zeng X, Mekbib KY, Kundishora AJ, Nelson-Williams C, Hao LT, Zhang J, Lam TT, Wilson R, Butler WE, Diluna ML, Feinberg P, Schafer DP, Movahedi K, Tannenbaum A, Koundal S, Chen X, Benveniste H, Limbrick DD, Schiff SJ, Carter BS, Gunel M, Simard JM, Lifton RP, Alper SL, Delpire E, Kahle KT. The choroid plexus links innate immunity to CSF dysregulation in hydrocephalus. Cell 2023; 186:764-785.e21. [PMID: 36803604 PMCID: PMC10069664 DOI: 10.1016/j.cell.2023.01.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 09/26/2022] [Accepted: 01/12/2023] [Indexed: 02/18/2023]
Abstract
The choroid plexus (ChP) is the blood-cerebrospinal fluid (CSF) barrier and the primary source of CSF. Acquired hydrocephalus, caused by brain infection or hemorrhage, lacks drug treatments due to obscure pathobiology. Our integrated, multi-omic investigation of post-infectious hydrocephalus (PIH) and post-hemorrhagic hydrocephalus (PHH) models revealed that lipopolysaccharide and blood breakdown products trigger highly similar TLR4-dependent immune responses at the ChP-CSF interface. The resulting CSF "cytokine storm", elicited from peripherally derived and border-associated ChP macrophages, causes increased CSF production from ChP epithelial cells via phospho-activation of the TNF-receptor-associated kinase SPAK, which serves as a regulatory scaffold of a multi-ion transporter protein complex. Genetic or pharmacological immunomodulation prevents PIH and PHH by antagonizing SPAK-dependent CSF hypersecretion. These results reveal the ChP as a dynamic, cellularly heterogeneous tissue with highly regulated immune-secretory capacity, expand our understanding of ChP immune-epithelial cell cross talk, and reframe PIH and PHH as related neuroimmune disorders vulnerable to small molecule pharmacotherapy.
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Affiliation(s)
- Stephanie M Robert
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Benjamin C Reeves
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Emre Kiziltug
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Phan Q Duy
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Jason K Karimy
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - M Shahid Mansuri
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA; Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Arnaud Marlier
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Garrett Allington
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA; Department of Pathology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Ana B W Greenberg
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Tyrone DeSpenza
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Amrita K Singh
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Xue Zeng
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Kedous Y Mekbib
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Adam J Kundishora
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | | | - Le Thi Hao
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Jinwei Zhang
- Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, Hatherly Laboratory, Exeter EX1 2LU, UK
| | - TuKiet T Lam
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA; Keck MS & Proteomics Resource, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Rashaun Wilson
- Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA; Keck MS & Proteomics Resource, Yale University School of Medicine, New Haven, CT 06520, USA
| | - William E Butler
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Michael L Diluna
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Philip Feinberg
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute University of Massachusetts Chan Medical School, Worcester, MA 01655, USA; Medical Scientist Training Program, UMass Chan Medical School, Worcester, MA 01655, USA
| | - Dorothy P Schafer
- Department of Neurobiology, Brudnick Neuropsychiatric Research Institute University of Massachusetts Chan Medical School, Worcester, MA 01655, USA
| | - Kiavash Movahedi
- Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, 1050 Brussels, Belgium; Myeloid Cell Immunology Laboratory, VIB Center for Inflammation Research, 1050 Brussels, Belgium
| | - Allen Tannenbaum
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, NY 11794, USA; Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York City, NY 11794, USA
| | - Sunil Koundal
- Department of Anesthesiology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Xinan Chen
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, NY 11794, USA
| | - Helene Benveniste
- Department of Anesthesiology, Yale School of Medicine, New Haven, CT 06520, USA
| | - David D Limbrick
- Department of Neurosurgery, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Steven J Schiff
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - Bob S Carter
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Murat Gunel
- Department of Neurosurgery, Yale School of Medicine, New Haven, CT 06520, USA
| | - J Marc Simard
- Department of Neurosurgery, University of Maryland, School of Medicine, Baltimore, MD 21201, USA; Department of Pathology, University of Maryland, School of Medicine, Baltimore, MD 21201, USA; Department of Physiology, University of Maryland, School of Medicine, Baltimore, MD 21201, USA
| | - Richard P Lifton
- Laboratory of Human Genetics and Genomics, the Rockefeller University, New York, NY 10065, USA
| | - Seth L Alper
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Eric Delpire
- Department of Anesthesiology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Kristopher T Kahle
- Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA; Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA; Department of Neurosurgery and Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA.
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11
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Peroxiredoxin 2 Is a Potential Objective Indicator for Severity and the Clinical Status of Subarachnoid Hemorrhage Patients. DISEASE MARKERS 2023; 2023:5781180. [PMID: 36793477 PMCID: PMC9925263 DOI: 10.1155/2023/5781180] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 12/26/2022] [Accepted: 01/01/2023] [Indexed: 02/08/2023]
Abstract
Purpose We have demonstrated that peroxiredoxin 2 (Prx2) released from lytic erythrocytes and damaged neurons into the subarachnoid space could activate microglia and then result in neuronal apoptosis. In this study, we tested the possibility of using Prx2 as an objective indicator for severity of the subarachnoid hemorrhage (SAH) and the clinical status of the patient. Materials and Methods SAH patients were prospectively enrolled and followed up for 3 months. Cerebrospinal fluid (CSF) and blood samples were collected 0-3 and 5-7 days after SAH onset. The levels of Prx2 in the CSF and the blood were measured by an enzyme-linked immunosorbent assay (ELISA). We used Spearman's rank coefficient to assess the correlation between Prx2 and the clinical scores. Receiver operating characteristic (ROC) curves were used for Prx2 levels to predict the outcome of SAH by calculating the area under the curve (AUC). Unpaired Student's t-test was used to analyze the differences in continuous variables across cohorts. Results Prx2 levels in the CSF increased after onset while those in the blood decreased. Existing data showed that Prx2 levels within 3 days in the CSF after SAH were positively correlated with the Hunt-Hess score (R = 0.761, P < 0.001). Patients with CVS had higher levels of Prx2 in their CSF within 5-7 days after onset. Prx2 levels in the CSF within 5-7 days can be used as a predictor of prognosis. The ratio of Prx2 in the CSF and the blood within 3 days of onset was positively correlated with the Hunt-Hess score and negatively correlated with Glasgow Outcome Scale (GOS; R = -0.605, P < 0.05). Conclusion We found that the levels of Prx2 in the CSF and the ratio of Prx2 in the CSF and the blood within 3 days of onset can be used as a biomarker to detect the severity of the disease and the clinical status of the patient.
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12
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Xia F, Keep RF, Ye F, Holste KG, Wan S, Xi G, Hua Y. The Fate of Erythrocytes after Cerebral Hemorrhage. Transl Stroke Res 2022; 13:655-664. [PMID: 35066815 PMCID: PMC9782724 DOI: 10.1007/s12975-021-00980-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/16/2021] [Accepted: 12/16/2021] [Indexed: 02/05/2023]
Abstract
After a cerebral hemorrhage (intracerebral, subarachnoid, and intraventricular), extravasated blood contributes to both initial brain injury, via physical disruption and mass effect, and secondary injury, through the release of potentially neurotoxic and pro-inflammatory factors such as hemoglobin, iron, and peroxiredoxin-2. Erythrocytes are a major blood component and are a source of such damaging factors. Erythrolysis after cerebral hemorrhage releases potential neurotoxins, contributing to brain injury and edema. Alternatively, erythrocyte phagocytosis via microglia or macrophages may limit the spill of neurotoxins therefore limiting subsequent brain injury. The aim of this review is to discuss the process of phagocytosis of erythrocytes by microglia or macrophages after cerebral hemorrhage, the effect of erythrolysis on brain injury, novel mechanisms of erythrocyte and phagocyte egress from the brain, and exciting new targets in this pathway to attenuate brain injury. Understanding the fate of erythrocytes after cerebral hemorrhage may uncover additional potential interventions for clinical translational research.
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Affiliation(s)
- Fan Xia
- Department of Neurosurgery, University of Michigan, 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Fenghui Ye
- Department of Neurosurgery, University of Michigan, 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Katherine G Holste
- Department of Neurosurgery, University of Michigan, 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Shu Wan
- Department of Neurosurgery, University of Michigan, 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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13
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Zhang J, Wang Z, Zhang H, Li S, Li J, Liu H, Cheng Q. The role of lipocalin 2 in brain injury and recovery after ischemic and hemorrhagic stroke. Front Mol Neurosci 2022; 15:930526. [PMID: 36187347 PMCID: PMC9520288 DOI: 10.3389/fnmol.2022.930526] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/02/2022] [Indexed: 12/03/2022] Open
Abstract
Ischemic and hemorrhagic stroke (including intracerebral hemorrhage, intraventricular hemorrhage, and subarachnoid hemorrhage) is the dominating cause of disability and death worldwide. Neuroinflammation, blood–brain barrier (BBB) disruption, neuronal death are the main pathological progress, which eventually causes brain injury. Increasing evidence indicated that lipocalin 2 (LCN2), a 25k-Da acute phase protein from the lipocalin superfamily, significantly increased immediately after the stroke and played a vital role in these events. Meanwhile, there exists a close relationship between LCN2 levels and the worse clinical outcome of patients with stroke. Further research revealed that LCN2 elimination is associated with reduced immune infiltrates, infarct volume, brain edema, BBB leakage, neuronal death, and neurological deficits. However, some studies revealed that LCN2 might also act as a beneficial factor in ischemic stroke. Nevertheless, the specific mechanism of LCN2 and its primary receptors (24p3R and megalin) involving in brain injury remains unclear. Therefore, it is necessary to investigate the mechanism of LCN2 induced brain damage after stroke. This review focuses on the role of LCN2 and its receptors in brain injury and aiming to find out possible therapeutic targets to reduce brain damage following stroke.
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Affiliation(s)
- Jingwei Zhang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Zeyu Wang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Hao Zhang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Shuwang Li
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Jing Li
- Department of Rehabilitation, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hongwei Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Hongwei Liu,
| | - Quan Cheng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Changsha, China
- Clinical Diagnosis and Therapy Center for Glioma of Xiangya Hospital, Central South University, Changsha, China
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Quan Cheng,
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14
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Sun N, Zhang C, Zhang R. Immune activation after intraventricular hemorrhage. J Stroke Cerebrovasc Dis 2022; 31:106696. [PMID: 35963211 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 07/24/2022] [Accepted: 07/27/2022] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES Intraventricular hemorrhage (IVH) is a subtype of stroke which has high mortality and morbidity, while comprehensive mechanism investigations and effective therapies are still in great need. Plenty of studies have shown that inflammation after stroke plays a critical role in disease outcomes. However, the inflammation after IVH remains unclear. This study aims to observe the immune response after IVH, thus providing therapeutic targets for IVH treatments. MATERIALS AND METHODS IVH was induced by autologous blood infusion model in SD rats. Totally 588 rats were assigned either in the sham or IVH group. T2* lesion and hemoglobin quantities, ventricular volume, brain edema, ventricular wall damage, blood-brain-barrier (BBB) continuity and immune response were observed by magnetic resonance image (MRI), hematoxylin-eosin staining (HE), Evans Blue, flow cytometry (FACS), and enzyme-linked immunosorbent assay (ELISA) at baseline, 6 h, 1 d, 3 d, 7 d, 14 d after surgery. RESULTS We found that ventricular volume enlargement occurred hours after IVH and peaked at 3 d after IVH, then mildly reduced till 14 d. Similar changes happened in brain edema, ventricular wall damage and BBB leakage. Immune cells and cytokines in the central nervous system and peripheral blood also increased after IVH and experienced similar trends as ventricular enlargement. T2* lesion and hemoglobin degradation occurred 6 h after IVH and kept decreasing till 14 d after IVH. CONCLUSIONS Our investigation illustrates that immune response exists after IVH, which may have a close relationship with disease outcomes. These results may provide promising immune related clues for mechanism and intervention studies in IVH.
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Affiliation(s)
- Na Sun
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China.
| | - Chen Zhang
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
| | - Rui Zhang
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China
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15
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Lolansen SD, Rostgaard N, Barbuskaite D, Capion T, Olsen MH, Norager NH, Vilhardt F, Andreassen SN, Toft-Bertelsen TL, Ye F, Juhler M, Keep RF, MacAulay N. Posthemorrhagic hydrocephalus associates with elevated inflammation and CSF hypersecretion via activation of choroidal transporters. Fluids Barriers CNS 2022; 19:62. [PMID: 35948938 PMCID: PMC9367104 DOI: 10.1186/s12987-022-00360-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/14/2022] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Posthemorrhagic hydrocephalus (PHH) often develops following hemorrhagic events such as intraventricular hemorrhage (IVH) and subarachnoid hemorrhage (SAH). Treatment is limited to surgical diversion of the cerebrospinal fluid (CSF) since no efficient pharmacological therapies are available. This limitation follows from our incomplete knowledge of the molecular mechanisms underlying the ventriculomegaly characteristic of PHH. Here, we aimed to elucidate the molecular coupling between a hemorrhagic event and the subsequent PHH development, and reveal the inflammatory profile of the PHH pathogenesis. METHODS CSF obtained from patients with SAH was analyzed for inflammatory markers using the proximity extension assay (PEA) technique. We employed an in vivo rat model of IVH to determine ventricular size, brain water content, intracranial pressure, and CSF secretion rate, as well as for transcriptomic analysis. Ex vivo radio-isotope assays of choroid plexus transport were employed to determine the direct effect of choroidal exposure to blood and inflammatory markers, both with acutely isolated choroid plexus and after prolonged exposure obtained with viable choroid plexus kept in tissue culture conditions. RESULTS The rat model of IVH demonstrated PHH and associated CSF hypersecretion. The Na+/K+-ATPase activity was enhanced in choroid plexus isolated from IVH rats, but not directly stimulated by blood components. Inflammatory markers that were elevated in SAH patient CSF acted on immune receptors upregulated in IVH rat choroid plexus and caused Na+/K+/2Cl- cotransporter 1 (NKCC1) hyperactivity in ex vivo experimental conditions. CONCLUSIONS CSF hypersecretion may contribute to PHH development, likely due to hyperactivity of choroid plexus transporters. The hemorrhage-induced inflammation detected in CSF and in the choroid plexus tissue may represent the underlying pathology. Therapeutic targeting of such pathways may be employed in future treatment strategies towards PHH patients.
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Affiliation(s)
- Sara Diana Lolansen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3B, DK-2200, Copenhagen, Denmark
| | - Nina Rostgaard
- Department of Neurosurgery, The Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Dagne Barbuskaite
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3B, DK-2200, Copenhagen, Denmark
| | - Tenna Capion
- Department of Neurosurgery, The Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Markus Harboe Olsen
- Department of Neuroanaesthesiology, The Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Nicolas H Norager
- Department of Neurosurgery, The Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Frederik Vilhardt
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Søren Norge Andreassen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3B, DK-2200, Copenhagen, Denmark
| | - Trine L Toft-Bertelsen
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3B, DK-2200, Copenhagen, Denmark
| | - Fenghui Ye
- Department of Neurosurgery, University of Michigan, Ann Arbor, USA
| | - Marianne Juhler
- Department of Neurosurgery, The Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, USA
| | - Nanna MacAulay
- Department of Neuroscience, University of Copenhagen, Blegdamsvej 3B, DK-2200, Copenhagen, Denmark.
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16
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Cai Z, Zhao K, Li Y, Wan X, Li C, Niu H, Shu K, Lei T. Early Enteral Nutrition Can Reduce Incidence of Postoperative Hydrocephalus in Patients with Severe Hypertensive Intracerebral Hemorrhage. Med Sci Monit 2022; 28:e935850. [PMID: 35655416 PMCID: PMC9172265 DOI: 10.12659/msm.935850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 04/28/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hydrocephalus secondary to hypertensive intracerebral hemorrhage (HICH) dramatically affects the prognosis. Early enteral nutrition (EN) is beneficial to severe HICH patients, but the impact of early EN administration on hydrocephalus remains unknown. This study aimed to explore the predictors for hydrocephalus occurrence after HICH, with special focus on the effect of early EN application. MATERIAL AND METHODS We retrospectively analyzed 146 patients with severe HICH who underwent microsurgery between January 2014 and October 2019 in our department. Patients were divided into early EN (≤48 h) and delayed EN (>48 h) group according to the time-point of EN administration. The diagnosis of hydrocephalus was confirmed by both radiological evaluation and an Evan index method. Diagnosis confirmed within 2 weeks after HICH was identified as acute hydrocephalus, otherwise, it was considered as chronic hydrocephalus. RESULTS Twenty-seven patients experienced acute hydrocephalus, while 20 patients developed chronic hydrocephalus. Low preoperative Glasgow coma scale (GCS), subarachnoid hemorrhage (SAH), intraventricular hemorrhage (IVH), delayed EN administration, high levels of postoperative white blood cell, neutrophil, neutrophil-to-lymphocyte ratio, C-reactive protein (CRP), and lactate dehydrogenase were positively related to the occurrence of chronic hydrocephalus (p<0.05), while only IVH was correlated with acute hydrocephalus occurrence (p<0.05). In addition, a multivariate analysis demonstrated that preoperative GCS, SAH, IVH, and early EN administration (p<0.05) were independent predictors for chronic hydrocephalus occurrence. CONCLUSIONS Early EN administration, SAH, IVH, and preoperative GCS were associated with the occurrence of chronic hydrocephalus in severe HICH patients. Early EN administration may inhibit the inflammatory response of brain-gut axis, which in turn reduces chronic hydrocephalus occurrence.
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17
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Wu M, Deng C, Lo TH, Chan KY, Li X, Wong CM. Peroxiredoxin, Senescence, and Cancer. Cells 2022; 11:cells11111772. [PMID: 35681467 PMCID: PMC9179887 DOI: 10.3390/cells11111772] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/26/2022] [Accepted: 05/26/2022] [Indexed: 02/08/2023] Open
Abstract
Peroxiredoxins are multifunctional enzymes that play a key role in protecting cells from stresses and maintaining the homeostasis of many cellular processes. Peroxiredoxins were firstly identified as antioxidant enzymes that can be found in all living organisms. Later studies demonstrated that peroxiredoxins also act as redox signaling regulators, chaperones, and proinflammatory factors and play important roles in oxidative defense, redox signaling, protein folding, cycle cell progression, DNA integrity, inflammation, and carcinogenesis. The versatility of peroxiredoxins is mainly based on their unique active center cysteine with a wide range of redox states and the ability to switch between low- and high-molecular-weight species for regulating their peroxidase and chaperone activities. Understanding the molecular mechanisms of peroxiredoxin in these processes will allow the development of new approaches to enhance longevity and to treat various cancers. In this article, we briefly review the history of peroxiredoxins, summarize recent advances in our understanding of peroxiredoxins in aging- and cancer-related biological processes, and discuss the future perspectives of using peroxiredoxins in disease diagnostics and treatments.
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18
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Holste KG, Xia F, Ye F, Keep RF, Xi G. Mechanisms of neuroinflammation in hydrocephalus after intraventricular hemorrhage: a review. Fluids Barriers CNS 2022; 19:28. [PMID: 35365172 PMCID: PMC8973639 DOI: 10.1186/s12987-022-00324-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 03/23/2022] [Indexed: 02/08/2023] Open
Abstract
Intraventricular hemorrhage (IVH) is a significant cause of morbidity and mortality in both neonatal and adult populations. IVH not only causes immediate damage to surrounding structures by way of mass effect and elevated intracranial pressure; the subsequent inflammation causes additional brain injury and edema. Of those neonates who experience severe IVH, 25-30% will go on to develop post-hemorrhagic hydrocephalus (PHH). PHH places neonates and adults at risk for white matter injury, seizures, and death. Unfortunately, the molecular determinants of PHH are not well understood. Within the past decade an emphasis has been placed on neuroinflammation in IVH and PHH. More information has come to light regarding inflammation-induced fibrosis and cerebrospinal fluid hypersecretion in response to IVH. The aim of this review is to discuss the role of neuroinflammation involving clot-derived neuroinflammatory factors including hemoglobin/iron, peroxiredoxin-2 and thrombin, as well as macrophages/microglia, cytokines and complement in the development of PHH. Understanding the mechanisms of neuroinflammation after IVH may highlight potential novel therapeutic targets for PHH.
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Affiliation(s)
- Katherine G Holste
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA.
| | - Fan Xia
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Fenghui Ye
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA.
- , 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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Lin T, Ding L, Lin Y, Liu C, Wang C, Wu D, Li Z, Li M, Sun J. Pharmacological inhibition of TLR4-NF-κB signaling by TAK-242 attenuates hydrocephalus after intraventricular hemorrhage. Int Immunopharmacol 2022; 103:108486. [PMID: 34973529 DOI: 10.1016/j.intimp.2021.108486] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/07/2021] [Accepted: 12/16/2021] [Indexed: 12/14/2022]
Abstract
Compelling evidence has confirmed that inflammatory pathways involving TLR4-regulated cytokines and immune cells are vitallyimportant for the pathogenesis of posthemorrhagic hydrocephalus (PHH), hinting that pharmacological prevention of PHH is feasible. TAK-242, as a toll-like receptor 4 (TLR4) inhibitor, downregulates TLR4-induced inflammatory responses and becomes a potent and noveltherapeuticdrugcandidatefor PHH. In the present study, we investigate whether TAK-242 protects against hydrocephalus and improves the prognosis of intraventricular hemorrhage (IVH). We also explore the possible role of TAK-242 for the regulation of TLR4-NF-κB signaling pathway. A model of PHH was conducted in 6-week-old Male Sprague-Dawley (SD) rats. The rats were divided into four main groups, including the sham, IVH + vehicle, IVH + TAK-242 and IVH groups. Magnetic resonance imaging (MRI) was applied to measure the lateral ventricle volume. Western blot (WB) and immunofluorescence (IF) were applied to detect the expression of TLR4, NF-κB, fibronectin and laminin. A combined scoring system and Morris water maze were employed to evaluate neurological functions after IVH. We found that IVH induced heightened activation of TLR4-NF-κB signaling pathway. We observed the increased lateral ventricular volume, elevation of NF-κB in choroidplexus, as well as fibronectin and laminin in the subarachnoid space (SAS) and ventricular wall after IVH. Obviously, TAK-242 treatment effectively inhibited the up-regulation of NF-κB, fibronectin, laminin and significantly alleviated ventriculomegaly after IVH. Importantly, TAK-242 improved neurocognitive deficits after PHH. In conclusion, TAK-242 attenuated IVH-induced hydrocephalus and improved the prognosis of PHH. The underlying mechanism involved the TAK-242-mediated downregulation of TLR4-NF-κB signaling pathway.
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Affiliation(s)
- Tao Lin
- Department of Neurosurgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China; Department of Neurosurgery, Shandong Second Provincial General Hospital, Jinan, Shandong, 250022, China
| | - Ling Ding
- Department of Otorhinolaryngology-Head and Neck Surgery, Shandong Provincial Hospital affiliated to Shandong First Medical University, 324 Jingwu Road, Jinan, Shandong 250001, China
| | - Yicheng Lin
- Department of Neurology, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Chunbo Liu
- Department of Neurosurgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Changzhen Wang
- Department of Neurosurgery, Shandong Second Provincial General Hospital, Jinan, Shandong, 250022, China
| | - Dahao Wu
- Department of Neurosurgery, Shandong Second Provincial General Hospital, Jinan, Shandong, 250022, China
| | - Zhe Li
- Department of Neurosurgery, Shandong Second Provincial General Hospital, Jinan, Shandong, 250022, China
| | - Meng Li
- Department of Neurosurgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China.
| | - Jinlong Sun
- Department of Neurosurgery, Shandong Qianfoshan Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China.
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Zhang J, Peng K, Ye F, Koduri S, Hua Y, Keep RF, Xi G. Acute T2*-Weighted Magnetic Resonance Imaging Detectable Cerebral Thrombosis in a Rat Model of Subarachnoid Hemorrhage. Transl Stroke Res 2022; 13:188-196. [PMID: 34076826 PMCID: PMC9793692 DOI: 10.1007/s12975-021-00918-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/19/2021] [Accepted: 05/23/2021] [Indexed: 02/03/2023]
Abstract
Subarachnoid hemorrhage (SAH) is associated with a high incidence of morbidity and mortality, particularly within the first 72 h after aneurysm rupture. We recently found ultra-early cerebral thrombosis, detectable on T2* magnetic resonance imaging (MRI), in a mouse SAH model at 4 h after onset. The current study examined whether such changes also occur in rat at 24 h after SAH, the vessels involved, whether the degree of thrombosis varied with SAH severity and brain injury, and if it differed between male and female rats. Adult Sprague Dawley rats were subjected to an endovascular perforation SAH model or sham surgery and underwent T2 and T2* MRI 24 h later. Following SAH, increased numbers of T2* hypointense vessels were detected on MRI. The number of such vessels correlated with SAH severity, as assessed by MRI-based grading of bleeding. Histologically, thrombotic vessels were found on hematoxylin and eosin staining, had a single layer of smooth muscle cells on alpha-smooth muscle actin immunostaining, and had laminin 2α/fibrinogen double labeling, suggesting venule thrombosis underlies the T2*-positive vessels on MRI. Capillary thrombosis was also detected which may follow the venous thrombosis. In both male and female rats, the number of T2*-positive thrombotic vessels correlated with T2 lesion volume and neurological function, and the number of such vessels was significantly greater in female rats. In summary, this study identified cerebral venous thrombosis 24 h following SAH in rats that could be detected with T2* MRI imaging and may contribute to SAH-induced brain injury.
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Affiliation(s)
- Jingwei Zhang
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48109, USA,Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Kang Peng
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48109, USA,Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Fenghui Ye
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Sravanthi Koduri
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Richard F. Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48109, USA,Corresponding author: Guohua Xi, M.D. Address: R5018, BSRB, Department of Neurosurgery, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI 48109-2200, United States. Tel.: +1 734 764 1207, Fax: +1 734 763 7322
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21
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Peng K, Koduri S, Xia F, Gao F, Hua Y, Keep RF, Xi G. Impact of sex differences on thrombin-induced hydrocephalus and white matter injury: the role of neutrophils. Fluids Barriers CNS 2021; 18:38. [PMID: 34399800 PMCID: PMC8365969 DOI: 10.1186/s12987-021-00273-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/10/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Thrombin has been implicated in playing a role in hydrocephalus development following intraventricular hemorrhage (IVH). However, the mechanisms underlying the sex differences to the detrimental effects of thrombin post-IVH remain elusive. METHOD Three-month old male and female Sprague-Dawley rats underwent unilateral intracerebroventricular (ICV) injections of 3U or 5U thrombin, or saline, to examine differences in thrombin-induced hydrocephalus and white matter injury. Mortality, and lateral ventricle volume and white matter injury were measured on magnetic resonance imaging evaluation at 24 h post-injection. In addition, male rats were pretreated with 17-β estradiol (E2, 5 mg/kg) or vehicle at 24 and 2 h prior to ICV injection of 3U thrombin. All rats were euthanized at 24 h post-injection for histology and immunohistochemistry. RESULTS ICV injection of 5U thrombin caused 100 and 0% mortality in female and male rats, respectively. 3U of thrombin resulted in significant ventricular dilation and white matter damage at 24 h in both male and female rats, but both were worse in females (p < 0.05). Furthermore, neutrophil infiltration into choroid plexus and periventricular white matter was enhanced in female rats and may play a critical role in the sex difference in brain injury. Pre-treating male rats with E2, increased thrombin (3U)-induced hydrocephalus, periventricular white matter injury and neutrophil infiltration into the choroid plexus and white matter. CONCLUSIONS ICV thrombin injection induced more severe ventricular dilation and white matter damage in female rats compared to males. Estrogen appears to contribute to this difference which may involve greater neutrophil infiltration in females. Understanding sex differences in thrombin-induced brain injury may shed light on future interventions for hemorrhagic stroke.
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Affiliation(s)
- Kang Peng
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Sravanthi Koduri
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Fan Xia
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Feng Gao
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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22
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Wang M, Xia F, Wan S, Hua Y, Keep RF, Xi G. Role of Complement Component 3 in Early Erythrolysis in the Hematoma After Experimental Intracerebral Hemorrhage. Stroke 2021; 52:2649-2660. [PMID: 34176310 DOI: 10.1161/strokeaha.121.034372] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Ming Wang
- Department of Neurosurgery, University of Michigan, Ann Arbor (M.W., F.X., S.W., Y.H., R.F.K., G.X.).,Brain Center, Zhejiang Hospital, Zhejiang University Medical School, Hangzhou, China (M.W., S.W.)
| | - Fan Xia
- Department of Neurosurgery, University of Michigan, Ann Arbor (M.W., F.X., S.W., Y.H., R.F.K., G.X.)
| | - Shu Wan
- Department of Neurosurgery, University of Michigan, Ann Arbor (M.W., F.X., S.W., Y.H., R.F.K., G.X.).,Brain Center, Zhejiang Hospital, Zhejiang University Medical School, Hangzhou, China (M.W., S.W.)
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor (M.W., F.X., S.W., Y.H., R.F.K., G.X.)
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor (M.W., F.X., S.W., Y.H., R.F.K., G.X.)
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor (M.W., F.X., S.W., Y.H., R.F.K., G.X.)
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23
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Keep RF, Jones HC, Drewes LR. Brain Barriers and brain fluids research in 2020 and the fluids and barriers of the CNS thematic series on advances in in vitro modeling of the blood-brain barrier and neurovascular unit. Fluids Barriers CNS 2021; 18:24. [PMID: 34020685 PMCID: PMC8138848 DOI: 10.1186/s12987-021-00258-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This editorial discusses advances in brain barrier and brain fluid research in 2020. Topics include: the cerebral endothelium and the neurovascular unit; the choroid plexus; the meninges; cerebrospinal fluid and the glymphatic system; disease states impacting the brain barriers and brain fluids; drug delivery to the brain. This editorial also highlights the recently completed Fluids Barriers CNS thematic series entitled, Advances in in vitro modeling of the bloodbrain barrier and neurovascular unit. Such in vitro modeling is progressing rapidly.
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Affiliation(s)
- Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, 48105, USA. .,Department of Neurosurgery, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, R5018 BSRB, MI, 48109-2200, USA.
| | - Hazel C Jones
- Gagle Brook House, Chesterton, Bicester, OX26 1UF, UK
| | - Lester R Drewes
- Department of Biomedical Sciences, University of Minnesota Medical School Duluth, Duluth, MN, 55812, USA
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24
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Ye F, Hua Y, Keep RF, Xi G, Garton HJL. CD47 blocking antibody accelerates hematoma clearance and alleviates hydrocephalus after experimental intraventricular hemorrhage. Neurobiol Dis 2021; 155:105384. [PMID: 33945877 DOI: 10.1016/j.nbd.2021.105384] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/26/2021] [Accepted: 04/30/2021] [Indexed: 12/22/2022] Open
Abstract
Background CD47, a glycoprotein on red blood cell membranes, inhibits phagocytosis via interaction with signal regulatory protein α on phagocytes. Our previous research has demonstrated that blocking CD47 accelerates hematoma clearance and reduces brain injury after intracerebral hemorrhage. The current study investigated whether phagocytosis or erythrocyte CD47 impacts hematoma resolution and hydrocephalus development after intraventricular hemorrhage (IVH). Methods Adult (3-month-old) male Fischer 344 rats were intraventricularly injected with 200 μl autologous blood, mixed with either CD47 blocking antibody or isotype IgG, or 200 μl saline as control. In subgroups of CD47 blocking antibody treated rats, clodronate liposomes (to deplete microglia/monocyte-derived macrophages) or control liposomes were co-injected. Magnetic resonance imaging (MRI) was used to evaluate ventricular volume and intraventricular T2* lesion volume (estimating hematoma volume). The brains were harvested after 4 or 72 h for histology to evaluate phagocytosis. Results In adult male rats, CD47 blocking antibody alleviated hydrocephalus development by day 3. In addition, the CD47 blocking antibody reduced intraventricular T2* lesion and T2* non-hypointense lesion size after IVH through day 1 to day 3. Erythrophagocytosis was observed as soon as 4 h after IVH and was enhanced on day 3. Furthermore, intra-hematoma infiltration of CD68, heme oxygenase-1 and ferritin positive phagocytes were upregulated by CD47 blockade by day 3. Clodronate liposomes co-injection caused more severe hydrocephalus and weight loss. Conclusion Blocking CD47 in the hematoma accelerated hematoma clearance and alleviated hemolysis and hydrocephalus development after IVH, suggesting CD47 might be valuable in the future treatment for IVH.
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Affiliation(s)
- Fenghui Ye
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA.
| | - Hugh J L Garton
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA.
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Chen T, Tan X, Xia F, Hua Y, Keep RF, Xi G. Hydrocephalus Induced by Intraventricular Peroxiredoxin-2: The Role of Macrophages in the Choroid Plexus. Biomolecules 2021; 11:654. [PMID: 33946699 PMCID: PMC8145001 DOI: 10.3390/biom11050654] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 12/18/2022] Open
Abstract
The choroid plexus (CP) is the primary source of cerebrospinal fluid in the central nervous system. Recent evidence indicates that inflammatory pathways at the CP may be involved in hydrocephalus development. Peroxiredoxin 2 (Prx2) is a major component of red blood cells. Extracellular Prx2 is proinflammatory, and its release after red blood cell lysis may contribute to hydrocephalus after intraventricular hemorrhage. This study aimed to identify alterations in CP macrophages and dendritic cells following intracerebroventricular Prx2 injection and investigate the relationship between macrophages/dendritic cells and hydrocephalus. There were two parts to this study. In the first part, adult male Sprague-Dawley rats received an intracerebroventricular injection of Prx2 or saline. In the second part, Prx2 was co-injected with clodronate liposomes or control liposomes. All animals were euthanized at 24 h after magnetic resonance imaging. Immunohistochemistry was used to evaluate macrophages in CP, magnetic resonance imaging to quantify hydrocephalus, and histology to assess ventricular wall damage. The intracerebroventricular injection of Prx2 not only increased the OX-6 positive cells, but it also altered their location in the CP and immunophenotype. Co-injecting clodronate liposomes with Prx2 decreased the number of macrophages and simultaneously attenuated Prx2-induced hydrocephalus and ventricular wall damage. These results suggest that CP macrophages play an essential role in CP inflammation-induced hydrocephalus. These macrophages may be a potential therapeutic target in post-hemorrhagic hydrocephalus.
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Affiliation(s)
- Ting Chen
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI 48109, USA; (T.C.); (X.T.); (F.X.); (Y.H.); (R.F.K.)
- School of Medicine, Zhejiang University, Hangzhou 310027, China
| | - Xiaoxiao Tan
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI 48109, USA; (T.C.); (X.T.); (F.X.); (Y.H.); (R.F.K.)
- School of Medicine, Zhejiang University, Hangzhou 310027, China
| | - Fan Xia
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI 48109, USA; (T.C.); (X.T.); (F.X.); (Y.H.); (R.F.K.)
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI 48109, USA; (T.C.); (X.T.); (F.X.); (Y.H.); (R.F.K.)
| | - Richard F. Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI 48109, USA; (T.C.); (X.T.); (F.X.); (Y.H.); (R.F.K.)
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI 48109, USA; (T.C.); (X.T.); (F.X.); (Y.H.); (R.F.K.)
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Nozaki T, Fujimoto A, Baba S, Enoki H, Okanishi T. Postoperative persistent fever may be a risk factor for hydrocephalus in hemispherical disconnection surgery. Epilepsy Behav 2020; 112:107466. [PMID: 33181888 DOI: 10.1016/j.yebeh.2020.107466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/24/2020] [Accepted: 08/30/2020] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Hemispherical disconnection surgery such as hemispherotomy or posterior quadrant disconnection (PQD) surgery sometimes induces hydrocephalus. We postulated that some risk factors for postoperative hydrocephalus can be managed perioperatively. The purpose of this study was to clarify and statistically analyze perioperative risk factors for postoperative progressive hydrocephalus. METHODS We reviewed patients who underwent hemispherotomy or PQD. We compared patients with and without progressive hydrocephalus with multivariate and univariate logistic regression analysis to identify risk factors for hydrocephalus. RESULTS Twenty-four patients underwent hemispherectomy or PQD (age: 25 days-45 years old, mean: 13.3 years, median: 8 years, standard deviation: 13.9 years, 14 males). Among them, five patients (21%) required hydrocephalus treatment. Persistent fever was a risk factor for progressive hydrocephalus (multivariate analysis: p = 0.024, univariate analysis: p < 0.001). CONCLUSION Postoperative persistent fever may be a manageable risk factor for postoperative hydrocephalus in hemispherotomy and PQD surgery.
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Affiliation(s)
- Toshiki Nozaki
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Shizuoka, Japan
| | - Ayataka Fujimoto
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Shizuoka, Japan.
| | - Shimpei Baba
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Shizuoka, Japan
| | - Hideo Enoki
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Shizuoka, Japan
| | - Tohru Okanishi
- Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Shizuoka, Japan
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Role of lipocalin-2 in extracellular peroxiredoxin 2-induced brain swelling, inflammation and neuronal death. Exp Neurol 2020; 335:113521. [PMID: 33129840 DOI: 10.1016/j.expneurol.2020.113521] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/20/2020] [Accepted: 10/25/2020] [Indexed: 10/23/2022]
Abstract
Peroxiredoxin-2 (PRX-2) is known to be released from erythrocytes and induce brain damage after intracerebral hemorrhage (ICH); lipocalin-2 (LCN-2) is involved in neuroinflammation following ICH. This study examined the role of LCN-2 in PRX-2 induced brain injury and involved three parts. In the first part, adult male C57BL/6 wild-type (WT), LCN-2 heterozygous (LCN-2 HET), and LCN-2 knockout (LCN-2 KO) mice received either an intracaudate injection of recombinant PRX-2 or saline. In the second part, adult male C57BL/6 WT and male LCN-2 KO mice received recombinant PRX-2 with either recombinant mouse LCN-2 protein or control. In the third part, adult female C57BL/6 WT, LCN-2 HET, and LCN-2 KO mice received recombinant PRX-2. Behavioral tests, and T2- and T2*- weighted magnetic resonance imaging was obtained for all mice. Mice were then euthanized, and their brains used for Western blotting, histology and immunohistochemistry. Intracerebral PRX-2 injections resulted in increased expression of LCN-2 protein. PRX-2-induced brain swelling, neutrophil infiltration, microglia/macrophage activation, neuronal cell death, and neurological deficits were reduced in male LCN-2 HET and LCN-2 KO mice (P < 0.01) compared to WT and were exacerbated by exogenous LCN-2 co-injection. Additionally, intracerebral PRX-2 injections caused brain injury and neurological deficits in female WT mice; effects reduced in female LCN-2 KO mice. In conclusion, intracerebral injection of PRX-2 upregulates LCN-2, and LCN-2 is crucial in the effects of PRX-2 on neutrophil infiltration and microglia/macrophage activation, and ultimately brain damage.
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28
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Koduri S, Daou B, Hua Y, Keep R, Xi G, Pandey AS. Mechanisms of Post-Hemorrhagic Stroke Hydrocephalus Development: The Role of Kolmer Epiplexus Cells. World Neurosurg 2020; 144:256-257. [PMID: 33099209 PMCID: PMC7686065 DOI: 10.1016/j.wneu.2020.09.121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Sravanthi Koduri
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Badih Daou
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Richard Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Aditya S Pandey
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
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