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Ma J, Zhang M, Fu P, Yin X, Chen Z. Chemokines play a role in nerve damage and neuroprotection in vascular dementia. IBRO Neurosci Rep 2024; 17:154-160. [PMID: 39206161 PMCID: PMC11350449 DOI: 10.1016/j.ibneur.2024.08.002] [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: 06/05/2024] [Revised: 07/30/2024] [Accepted: 08/03/2024] [Indexed: 09/04/2024] Open
Abstract
Various Chemotactic Factors (FCs) play different roles in neuronal injury in vascular dementia. CXCL5 and CCL11 exacerbate neurological injury by promoting inflammatory responses. CXCL12/SDF-1 and CX3CL1 play neuroprotective roles.CXCL13, XCL-1 and CCL2/ MCP-1 exacerbate neurological injury in the early stage, while exerting neuronal regeneration and neuroprotective effects in the chronic progressive phase. Chemokines often play an important role in the course of vascular dementia by regulating inflammatory responses, oxidative stress, and autophagy. Activation of microglia plays an important role in the regression of vascular dementia. Activated microglia M1 causes neuronal damage through the release of chemokines. And microglia M2 has anti-inflammatory effects and is involved in the repair of brain damage. Therefore, dynamic monitoring of various related FCs and understanding the relationship between FCs and microglia can help to understand and regulate the disease course progression of vascular dementia.At present, many scholars have confirmed in basic research that different subgroups of chemokines are closely related to vascular dementia. In clinical research, new immunotherapy methods that upregulate XCL-1 and drugs that regulate the activity of CCL2/CCR2 signaling pathways are being studied and promoted.
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Affiliation(s)
- Jinming Ma
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang,Jiangxi, 332000, China
| | - Manqing Zhang
- School of Basic Medicine, Jiujiang University, Jiujiang, Jiangxi, 332000, China
| | - Peijie Fu
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang,Jiangxi, 332000, China
| | - Xiaoping Yin
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang,Jiangxi, 332000, China
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi,332000, China
| | - Zhiying Chen
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang,Jiangxi, 332000, China
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi,332000, China
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Chen G, Wang X, Jin Z, Hu G, Yu Q, Jiang H. HIF-1α knockdown attenuates inflammation and oxidative stress in ischemic stroke male rats via CXCR4/NF-κB pathway. Brain Behav 2024; 14:e70039. [PMID: 39295108 PMCID: PMC11410888 DOI: 10.1002/brb3.70039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 07/01/2024] [Accepted: 08/03/2024] [Indexed: 09/21/2024] Open
Abstract
BACKGROUND Hypoxia inducible factor-1α (HIF-1α) is a sensitive indicator of oxygen homeostasis, of which the expression elevates following hypoxia/ischemia. This study reveals the specific mechanisms underlying the effects of HIF-1α on ischemic stroke (IS). METHODS IS model was established using middle cerebral artery occlusion (MCAO)-modeled male rats and oxygen glucose deprivation/reoxygenation (OGD/R)-treated mice hippocampal cells HT22, followed by the silencing of HIF-1α and the overexpression of C-X-C motif chemokine receptor 4 (CXCR4) and nuclear factor-kappa B (NF-κB). Following the surgery, Garcia's grading scale was applied for neurological evaluation. Cerebral infarcts and injuries were visualized using 2,3,5-triphenyltetrazolium chloride and hematoxylin-eosin staining. The levels of tumor necrosis factor-α, Interleukin (IL)-6, IL-1β, malondialdehyde, and 8-hydroxy-2'-deoxyguanosine, were calculated via ELISA. MTT assay and lactate dehydrogenase (LDH) assay kit were adopted to determine the viability and cytotoxicity of OGD/R-modeled cells. Reactive oxygen species (ROS) generation was evaluated using a 2'-7'dichlorofluorescin diacetate (DCFH-DA) probe. The levels of HIF-1α, CXCR4, and NF-κB p65 were quantified via Western blot and immunofluorescence, respectively. RESULTS HIF-1α knockdown improved Garcia's score, attenuated the cerebral infarct, inflammation, and ROS generation, and alleviated the levels of inflammatory cytokines and CXCR4/NF-κB p65 in MCAO-modeled rats. Such effects were reversed following the overexpression of CXCR4 and NF-κB. Also, in OGD/R-treated HT22 cells, HIF-1α silencing diminished the cytotoxicity and ROS production and reduced the expressions of CXCR4/NF-κB p65, while promoting viability. However, CXCR4/NF-κB p65 overexpression did the opposite. CONCLUSION HIF-1α knockdown alleviates inflammation and oxidative stress in IS through the CXCR4/NF-κB pathway.
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Affiliation(s)
- Gao Chen
- School of MedicineQuzhou College of TechnologyQuzhouZhejiangChina
| | - Xi Wang
- Department of UrologyThe Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's HospitalQuzhouZhejiangChina
| | - Zhan Jin
- School of MedicineQuzhou College of TechnologyQuzhouZhejiangChina
| | - Gao‐Bo Hu
- School of MedicineQuzhou College of TechnologyQuzhouZhejiangChina
| | - Qi‐Hui Yu
- School of MedicineQuzhou College of TechnologyQuzhouZhejiangChina
| | - Hai‐Yan Jiang
- Department of GynecologyQuzhou Maternal and Child Health Care HospitalQuzhouZhejiangChina
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You S, Chen H, Miao M, Du J, Che B, Xu T, Liu CF, Zhang Y, He J, Zhong X, Cao Y, Zhong C. Prognostic significance of plasma SDF-1 in acute ischemic stroke patients with diabetes mellitus: the CATIS trial. Cardiovasc Diabetol 2023; 22:274. [PMID: 37817149 PMCID: PMC10566135 DOI: 10.1186/s12933-023-01996-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 09/18/2023] [Indexed: 10/12/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Evidence on the associations between baseline stromal cell-derived factor (SDF)-1 and clinical outcomes in acute ischemic stroke patients is lacking. The present study aimed to examine the relationship between plasma SDF-1 levels and clinical outcomes based on a large multicenter study of the China Antihypertensive Trial in Acute Ischemic Stroke (CATIS). METHODS Secondary analysis was conducted among 3,255 participants from the CATIS trial with a baseline measurement of plasma SDF-1 levels. We evaluated the associations between plasma SDF-1 levels and one-year recurrent stroke, cardiovascular events, and all-cause mortality using Cox regression models. We further investigated the prognostic effect of SDF-1 on clinical outcomes in patients with different characteristics. RESULTS Higher plasma SDF-1 levels were not associated with recurrent stroke, cardiovascular events, and all-cause mortality at one-year after ischemic stroke (all P trend ≥ 0.05). There were significant interactions between plasma SDF-1 levels and history of diabetes mellitus on recurrent stroke (P = 0.005), cardiovascular events (P = 0.007) and all-cause mortality (P = 0.04) at one year. In patients with diabetes mellitus, plasma SDF-1 was significantly associated with an increased risk of recurrent stroke and cardiovascular events after adjustment for confounders. For example, 1-SD higher log-SDF-1 was associated with a hazard ratio (95% confidence interval) of 1.65 (1.18-2.32) for recurrent stroke and 1.47 (1.08-1.99) for the cardiovascular events, but not all-cause mortality 1.36 (0.96-1.93) at one year. However, there were no associations between plasma SDF-1 and clinical outcomes in patients without diabetes mellitus (all P > 0.05). The addition of plasma SDF-1 to the conventional risk factors model significantly improved the risk prediction of all outcomes. Similarly, findings between elevated SDF-1 levels and two-year outcomes were found only in patients with diabetes mellitus. CONCLUSIONS Elevated plasma SDF-1 was significantly associated with an increased risk of recurrent stroke and cardiovascular events only in ischemic patients with diabetes mellitus.
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Affiliation(s)
- Shoujiang You
- Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, No.1055, Sanxiang Road, Suzhou, 215004, China
| | - Hongyu Chen
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, 215123, China
| | - Mengyuan Miao
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, 215123, China
| | - Jigang Du
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, 215123, China
| | - Bizhong Che
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, 215123, China
| | - Tan Xu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, 215123, China
| | - Chun-Feng Liu
- Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, No.1055, Sanxiang Road, Suzhou, 215004, China
- Institutes of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Yonghong Zhang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, 215123, China
| | - Jiang He
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, USA
| | - Xiaoyan Zhong
- School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu, 215123, China.
| | - Yongjun Cao
- Department of Neurology and Suzhou Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, No.1055, Sanxiang Road, Suzhou, 215004, China.
- Institutes of Neuroscience, Soochow University, Suzhou, 215123, China.
| | - Chongke Zhong
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, 215123, China.
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Wang Q, Xu S, Wang B, Qin Y, Ji Y, Yang Q, Xu Y, Zhou Z. Chemokine receptor 7 mediates miRNA-182 to regulate cerebral ischemia/reperfusion injury in rats. CNS Neurosci Ther 2022; 29:712-726. [PMID: 36523152 PMCID: PMC9873520 DOI: 10.1111/cns.14056] [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: 07/12/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 12/23/2022] Open
Abstract
AIMS Chemokine receptor 7 (CXCR7) exerts protective effects on the brain. MicroRNAs (miRNAs) are involved in cerebral ischemia/reperfusion (I/R) injury, but their involvement in CXCR7-mediated brain protection is unknown. In this study, we investigated the role of miRNAs in CXCR7-mediated brain protection. METHODS CXCR7 levels in peripheral blood samples from patients with acute ischemic stroke (AIS) and ischemic penumbra area brain tissues from middle cerebral artery occlusion (MCAO) rats after recanalization were measured. An miRNA microarray analysis was performed to examine the expression of miRNAs caused by CXCR7 knockdown in ischemic penumbra area brain tissue in middle cerebral artery occlusion-reperfusion rats and to predict corresponding downstream target genes. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis revealed the most enriched pathways. A dual-luciferase reporter assay confirmed the direct regulation of miR-182 on the target gene TCF7L2. The correlation between TCF7L2 and CXCR7/miR-182 was verified using rescue assays. RESULTS CXCR7 expression was upregulated in MCAO rats and mechanical thrombectomy patients with AIS compared to that in controls. The motor and sensory functions of MCAO rats with CXCR7 knockdown further decreased, and the infarct volume and cerebral edema increased. miRNA microarray data showed that seven miRNAs were differentially expressed after shRNA-CXCR7 treatment. The dual-luciferase reporter assay confirmed that miR-182 directly targeted the TCF7L2 gene. Rescue assays confirmed that TCF7L2 is downstream of CXCR7/miR-182. KEGG pathway analysis showed that the Hippo pathway may be a key pathway in CXCR7 upregulation and plays a role in protecting the brain after interventional surgery. Animal experiments have shown that CXCR7-mediated cerebral I/R injury promotes the phosphorylation of key molecules YAP and TAZ in the Hippo pathway. CONCLUSION CXCR7 protects against cerebral I/R injury, possibly via the miR-182/TCF7L2/Hippo pathway. These results indicate that CXCR7 affects cerebral ischemia-reperfusion injury through miRNA regulation and downstream pathways.
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Affiliation(s)
- Qi Wang
- Department of Neurology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina,Key Laboratory of Noncoding RNA Transformation Research of Anhui Higher Education InstitutesWannan Medical CollegeWuhuChina
| | - Sifan Xu
- Department of Neurology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina
| | - Bin Wang
- Department of Anesthesiology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina
| | - Yu Qin
- Department of Neurology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina
| | - Yachen Ji
- Department of Neurology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina
| | - Qian Yang
- Department of Neurology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina
| | - Yang Xu
- Department of Neurology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina
| | - Zhiming Zhou
- Department of Neurology, The First Affiliated Hospital of Wannan Medical CollegeYijishan HospitalWuhuChina
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Zhang S, Peng B, Chen Z, Yu J, Deng G, Bao Y, Ma C, Du F, Sheu WC, Kimberly WT, Simard JM, Coman D, Chen Q, Hyder F, Zhou J, Sheth KN. Brain-targeting, acid-responsive antioxidant nanoparticles for stroke treatment and drug delivery. Bioact Mater 2022; 16:57-65. [PMID: 35386312 PMCID: PMC8958421 DOI: 10.1016/j.bioactmat.2022.02.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/02/2022] [Accepted: 02/28/2022] [Indexed: 12/15/2022] Open
Abstract
Stroke is the leading cause of death and disability. Currently, there is no effective pharmacological treatment for this disease, which can be partially attributed to the inability to efficiently deliver therapeutics to the brain. Here we report the development of natural compound-derived nanoparticles (NPs), which function both as a potent therapeutic agent for stroke treatment and as an efficient carrier for drug delivery to the ischemic brain. First, we screened a collection of natural nanomaterials and identified betulinic acid (BA) as one of the most potent antioxidants for stroke treatment. Next, we engineered BA NPs for preferential drug release in acidic ischemic tissue through chemically converting BA to betulinic amine (BAM) and for targeted drug delivery through surface conjugation of AMD3100, a CXCR4 antagonist. The resulting AMD3100-conjugated BAM NPs, or A-BAM NPs, were then assessed as a therapeutic agent for stroke treatment and as a carrier for delivery of NA1, a neuroprotective peptide. We show that intravenous administration of A-BAM NPs effectively improved recovery from stroke and its efficacy was further enhanced when NA1 was encapsulated. Due to their multifunctionality and significant efficacy, we anticipate that A-BAM NPs have the potential to be translated both as a therapeutic agent and as a drug carrier to improve the treatment of stroke.
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Key Words
- A-BAM NPs, A-BAM NPs
- ALT, alanine aminotransferase
- AST, aspartate aminotransferase
- Acid-triggered release
- Antioxidant nanoparticles
- BA, betulinic acid
- BAM, betulinic amine
- BBB, blood brain barrier
- BIRDS, biosensor imaging of redundant deviation in shifts
- BT, ß-sitosterol
- DLS, dynamic light scattering
- DTA, dehydrotrametenolic acid
- DYDA, diketohydrindylidene diketohydrindamine
- Drug delivery
- GA, glycyrrhetic acid
- Ischemic stroke
- LCMS, liquid chromatography mass spectrometry
- LP, lupeol
- MCAO, middle cerebral artery occlusion
- NA1
- NMR, nuclear magnetic resonance
- NP, nanoparticle
- OA, oleanolic acid
- PAA, poricoic acid
- PEG, polyethylene glycol
- SA, sumaresinolic acid
- SEM, scanning electron microscopy
- ST, stigmasterol
- TEM, transmission electron microscope
- TTC, triphenyltetrazolium chloride
- UA, ursolic acid
- tPA, tissue-type plasminogen activator
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Affiliation(s)
- Shenqi Zhang
- Department of Neurosurgery, USA
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | | | | | | | | | | | - Chao Ma
- Department of Neurosurgery, USA
| | | | | | - W. Taylor Kimberly
- Department of Neurology, Division of Neurocritical Care, Massachusetts General Hospital, Boston, MA, USA
| | - J. Marc Simard
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Daniel Coman
- Department of Radiology and Biomedical Imaging, USA
| | - Qianxue Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | - Fahmeed Hyder
- Department of Biomedical Engineering, USA
- Department of Radiology and Biomedical Imaging, USA
| | - Jiangbing Zhou
- Department of Neurosurgery, USA
- Department of Biomedical Engineering, USA
| | - Kevin N. Sheth
- Department of Neurosurgery, USA
- Department of Neurology, Yale University, New Haven, CT, 06510, USA
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Yang Y, Yin N, Gu Z, Zhao Y, Liu C, Zhou T, Zhang K, Zhang Z, Liu J, Shi J. Engineered biomimetic drug-delivery systems for ischemic stroke therapy. MEDICINE IN DRUG DISCOVERY 2022. [DOI: 10.1016/j.medidd.2022.100129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Zhao W, Zhang J, Liao J, Li X. Evaluation of circulating endothelial progenitor cells and the severity of transient ischemic attack. J Clin Neurosci 2022; 99:123-129. [PMID: 35279584 DOI: 10.1016/j.jocn.2022.03.001] [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: 09/18/2021] [Revised: 02/08/2022] [Accepted: 03/01/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Endothelial progenitor cells (EPCs) are believed to have a positive effect on maintaining endothelial integrity and participate in angiogenesis after cerebral infarction. Numerous studies have demonstrated that EPCs promote ischemic tissue angiogenesis after stroke. However, there are few studies on the relationship between the level of EPCs and the severity of transient ischemic attacks (TIAs). The current study aimed to investigate the evaluation value of EPCs and serum stromal cell-derived factor-1α(SDF-1α) levels on the severity of TIA. METHODS A total of 144 patients with TIA who had an onset of symptoms within 24 h were enrolled and divided into a high-risk TIA (HR-TIA) group (79 cases) and a nonhigh-risk TIA (NHR-TIA) group (65 cases). Clinical data of these patients were collected. Flow cytometry (FCM) was used to measure the number of CD34+KDR+ EPCs, and enzyme-linked immunosorbent assay (ELISA) was used to determine the concentration of serum SDF-1α and vascular endothelial growth factor (VEGF). Fifteen healthy donors were selected as the normal control (NC) group. Circulating EPCs were isolated by density gradient centrifugation from the first 15 patients in the high-risk TIA group, the nonhigh-risk TIA group, and the NC group. A colony assay and MTT assay were used to determine the proliferation ability of each group, and a Boyden chamber was used to determine the migration potential of EPCs. RESULTS Compared with the nonhigh-risk group, patients in the high-risk TIA group were older and had a higher incidence of hypertension and diabetes and stroke recurrence. Patients in the high-risk TIA group had higher levels of triglycerides, cholesterol, and low-density lipoprotein. However, there were no significant differences between the two groups in sex, time from onset to blood draw, smoking, body mass index, or homocysteine (P > 0.05). The number of circulating EPCs in the nonhigh-risk TIA group was higher than that in the high-risk TIA group (P < 0.01). SDF-1α and VEGF levels in the nonhigh-risk TIA group were lower than those in the high-risk TIA group (P < 0.01). The results of multivariate regression analysis showed that age, hypertension, diabetes, smoking, and SDF-1α were risk factors for high-risk TIA, and EPCs were protective factors for high-risk TIA. EPCs were separated and cultured for 72 h. Compared with the NC group, EPCs functions were weakened in the high-risk TIA group and nonhigh-risk TIA group (P < 0.05). Compared with the nonhigh-risk TIA group, EPC functions were decreased in the high-risk TIA group (P < 0.01). CONCLUSION CD34+KDR+ EPCs are protective factors for high-risk TIA. The number of circulating CD34+KDR+ EPCs and the concentration of SDF-1α have important clinical value in predicting the progression of TIA to high-risk TIA.
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Affiliation(s)
- Wang Zhao
- Department of Neurology, Yongchuan Hospital of Chongqing Medical University, Chongqing 402160, China
| | - Jiangwei Zhang
- Department of Neurology, Yongchuan Hospital of Chongqing Medical University, Chongqing 402160, China.
| | - Juan Liao
- Central Laboratory, Yongchuan Hospital of Chongqing Medical University, Chongqing Key Laboratory of Cerebrovascular Disease Research, Chongqing 402160, China
| | - Xiaoyan Li
- Department of Radiology, Yongchuan Hospital of Chongqing Medical University, Chongqing, 402160, China
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Wang RY, Yang YR, Chang HC. The SDF1-CXCR4 Axis Is Involved in the Hyperbaric Oxygen Therapy-Mediated Neuronal Cells Migration in Transient Brain Ischemic Rats. Int J Mol Sci 2022; 23:ijms23031780. [PMID: 35163700 PMCID: PMC8836673 DOI: 10.3390/ijms23031780] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/27/2022] [Accepted: 02/03/2022] [Indexed: 02/05/2023] Open
Abstract
Neurogenesis is a physiological response after cerebral ischemic injury to possibly repair the damaged neural network. Therefore, promoting neurogenesis is very important for functional recovery after cerebral ischemic injury. Our previous research indicated that hyperbaric oxygen therapy (HBOT) exerted neuroprotective effects, such as reducing cerebral infarction volume. The purposes of this study were to further explore the effects of HBOT on the neurogenesis and the expressions of cell migration factors, including the stromal cell-derived factor 1 (SDF1) and its target receptor, the CXC chemokine receptor 4 (CXCR4). Thirty-two Sprague–Dawley rats were divided into the control or HBO group after receiving transient middle cerebral artery occlusion (MCAO). HBOT began to intervene 24 h after MCAO under the pressure of 3 atmospheres for one hour per day for 21 days. Rats in the control group were placed in the same acrylic box without HBOT during the experiment. After the final intervention, half of the rats in each group were cardio-perfused with ice-cold saline followed by 4% paraformaldehyde under anesthesia. The brains were removed, dehydrated and cut into serial 20μm coronal sections for immunofluorescence staining to detect the markers of newborn cell (BrdU+), mature neuron cell (NeuN+), SDF1, and CXCR4. The affected motor cortex of the other half rats in each group was separated under anesthesia and used to detect the expressions of brain-derived neurotrophic factor (BDNF), SDF1, and CXCR4. Motor function was tested by a ladder-climbing test before and after the experiment. HBOT significantly enhanced neurogenesis in the penumbra area and promoted the expressions of SDF1 and CXCR4. The numbers of BrdU+/SDF1+, BrdU+/CXCR4+, and BrdU+/NeuN+ cells and BDNF concentrations in the penumbra were all significantly increased in the HBO group when compared with the control group. The motor functions were improved in both groups, but there was a significant difference between groups in the post-test. Our results indicated that HBOT for 21 days enhanced neurogenesis and promoted cell migration toward the penumbra area in transient brain ischemic rats. HBOT also increased BDNF expression, which might further promote the reconstructions of the impaired neural networks and restore motor function.
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Affiliation(s)
- Ray-Yau Wang
- Department of Physical Therapy and Assistive Technology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (R.-Y.W.); (Y.-R.Y.)
| | - Yea-Ru Yang
- Department of Physical Therapy and Assistive Technology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (R.-Y.W.); (Y.-R.Y.)
| | - Heng-Chih Chang
- Department of Physical Therapy, Asia University, Taichung 413, Taiwan
- Correspondence: ; Tel.: +886-4-2332-3456 (ext. 48031)
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Role of Stromal Cell-Derived Factor-1 in Endothelial Progenitor Cell-Mediated Vascular Repair and Regeneration. Tissue Eng Regen Med 2021; 18:747-758. [PMID: 34449064 PMCID: PMC8440704 DOI: 10.1007/s13770-021-00366-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/07/2021] [Accepted: 06/15/2021] [Indexed: 12/13/2022] Open
Abstract
Endothelial progenitor cells (EPCs) are immature endothelial cells that participate in vascular repair and postnatal neovascularization and provide a novel and promising therapy for the treatment of vascular disease. Studies in different animal models have shown that EPC mobilization through pharmacological agents and autologous EPC transplantation contribute to restoring blood supply and tissue regeneration after ischemic injury. However, these effects of the progenitor cells in clinical studies exhibit mixed results. The therapeutic efficacy of EPCs is closely associated with the number of the progenitor cells recruited into ischemic regions and their functional abilities and survival in injury tissues. In this review, we discussed the regulating role of stromal cell-derived factor-1 (also known CXCL12, SDF-1) in EPC mobilization, recruitment, homing, vascular repair and neovascularization, and analyzed the underlying machemisms of these functions. Application of SDF-1 to improve the regenerative function of EPCs following vascular injury was also discussed. SDF-1 plays a crucial role in mobilizing EPC from bone marrow into peripheral circulation, recruiting the progenitor cells to target tissue and protecting against cell death under pathological conditions; thus improve EPC regenerative capacity. SDF-1 are crucial for regulating EPC regenerative function, and provide a potential target for improve therapeutic efficacy of the progenitor cells in treatment of vascular disease.
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