1
|
Cyclophilin A/Cluster of Differentiation 147 Interactions Participate in Early Brain Injury After Subarachnoid Hemorrhage in Rats: Erratum. Crit Care Med 2024; 52:e419. [PMID: 38869408 DOI: 10.1097/ccm.0000000000006305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
|
2
|
Chai YL, Rajeev V, Poh L, Selvaraji S, Hilal S, Chen CP, Jo DG, Koo EH, Arumugam TV, Lai MKP. Chronic cerebral hypoperfusion alters the CypA-EMMPRIN-gelatinase pathway: Implications for vascular dementia. J Cereb Blood Flow Metab 2023; 43:722-735. [PMID: 36537035 PMCID: PMC10108186 DOI: 10.1177/0271678x221146401] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 11/17/2022] [Accepted: 11/17/2022] [Indexed: 03/21/2023]
Abstract
Chronic cerebral hypoperfusion (CCH) is postulated to underlie multiple pathophysiological processes in vascular dementia (VaD), including extracellular matrix dysfunction. While several extracellular matrix proteins, namely cyclophilin A (CypA), extracellular matrix metalloproteinase inducer (EMMPRIN) and gelatinases (matrix metalloproteinases, MMP-2 and -9) have been investigated in acute stroke, their involvement in CCH and VaD remains unclear. In this study, CypA-EMMPRIN-gelatinase proteins were analysed in a clinical cohort of 36 aged, cognitively unimpaired subjects and 48 VaD patients, as well as in a bilateral carotid artery stenosis mouse model of CCH. Lower CypA and higher EMMPRIN levels were found in both VaD serum and CCH mouse brain. Furthermore, gelatinases were differentially altered in CCH mice and VaD patients, with significant MMP-2 increase in CCH brain and serum, whilst serum MMP-9 was elevated in VaD but reduced in CCH, suggesting complex CypA-EMMPRIN-gelatinase regulatory mechanisms. Interestingly, subjects with cortical infarcts had higher serum MMP-2, while white matter hyperintensities, cortical infarcts and lacunes were associated with higher serum MMP-9. Taken together, our data indicate that perturbations of CypA-EMMPRIN signalling may be associated with gelatinase-mediated vascular sequelae, highlighting the potential utility of the CypA-EMMPRIN-gelatinase pathway as clinical biomarkers and therapeutic targets in VaD.
Collapse
Affiliation(s)
- Yuek Ling Chai
- Department of Pharmacology, Yong
Loo Lin School of Medicine, National University of Singapore, Kent Ridge,
Singapore
- Memory, Aging and Cognition Centre,
National University Health System, Kent Ridge, Singapore
| | - Vismitha Rajeev
- Department of Pharmacology, Yong
Loo Lin School of Medicine, National University of Singapore, Kent Ridge,
Singapore
| | - Luting Poh
- Department of Pharmacology, Yong
Loo Lin School of Medicine, National University of Singapore, Kent Ridge,
Singapore
| | - Sharmelee Selvaraji
- Department of Pharmacology, Yong
Loo Lin School of Medicine, National University of Singapore, Kent Ridge,
Singapore
| | - Saima Hilal
- Department of Pharmacology, Yong
Loo Lin School of Medicine, National University of Singapore, Kent Ridge,
Singapore
- Saw Swee Hock School of Public
Health, National University of Singapore, Kent Ridge, Singapore
| | - Christopher P Chen
- Department of Pharmacology, Yong
Loo Lin School of Medicine, National University of Singapore, Kent Ridge,
Singapore
- Memory, Aging and Cognition Centre,
National University Health System, Kent Ridge, Singapore
| | - Dong-Gyu Jo
- School of Pharmacy, Sungkyunkwan
University, Suwon, Republic of Korea
| | - Edward H Koo
- Department of Medicine, National
University of Singapore, Kent Ridge, Singapore
- Graduate School for Integrative
Sciences and Engineering, National University of Singapore, Kent Ridge,
Singapore
- Department of Neurosciences,
University of California San Diego, San Diego, CA, USA
| | - Thiruma V Arumugam
- School of Pharmacy, Sungkyunkwan
University, Suwon, Republic of Korea
- Centre for Cardiovascular Biology
and Disease Research, Department of Microbiology, Anatomy, Physiology and
Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe
University, Bundoora, VIC, Australia
| | - Mitchell KP Lai
- Department of Pharmacology, Yong
Loo Lin School of Medicine, National University of Singapore, Kent Ridge,
Singapore
- Memory, Aging and Cognition Centre,
National University Health System, Kent Ridge, Singapore
| |
Collapse
|
3
|
Li PF, Zhang JC, He XJ, Niu JH, Wu WF, Li T. The correlation between serum Cyclophilin A level and severity, prognosis of craniocerebral injury. Front Neurol 2022; 13:968071. [PMID: 36518190 PMCID: PMC9742373 DOI: 10.3389/fneur.2022.968071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 10/25/2022] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND To investigate the value of serum Cyclophilin A(Cyp A) in evaluating the prognosis of patients with different severity of craniocerebral injury. METHODS The clinical data of patients with craniocerebral injury treated in the Department of Emergency from July 2014 to August 2017 were collected. The patients were divided into survival group and death group, good neurological function group and poor neurological function group with 28-day prognosis and were divided into mild (13-15) group, moderate (9-12) group, and severe (3-8) group with Glasgow Coma Scale (GCS) score. Clinical parameters such as Cyp A and mortality in groups and the relationship between Cyp A and GCS score were compared and its predictive value for prognosis was analyzed with Binary Logistics regression, Cox proportional hazards model and kaplan-meier survival curve. RESULTS In a single-center retrospective study, 503 patients were enrolled, including 365 males and 138 females; serum Cyp A in the survival group was significantly smaller than the death group [18.7 (10.1, 51.5) ng/mL vs. 149.8 (79.5, 194.4) ng/mL, P < 0.005]. There were significant differences in mortality and Cyp A levels between patients with different severity of craniocerebral injury (P < 0.001). Serum Cyp A levels were negatively correlated with GCS scores in all patients with craniocerebral injury, mild, moderate, or severe craniocerebral injury (r = -0.844, r = -0.256, r = -0.540, r = -0.531, P < 0.001). Predictive value of Serum Cyp A level for all patients with craniocerebral injury, mild, moderate, and severe craniocerebral injury is 0.890, 0.789, 0.806, and 0.833, respectively. Logistics regression analysis showed that lactate (OR = 1.260, 95%CI: 1.023-1.551) and Cyp A (OR = 1.021, 95%CI: 1.011-1.031) were positively correlated with death (P < 0.05), Lactic acid (HR 1.115; 95%CI:1.001-1.243; P = 0.048), GCS score (HR 0.888; 95% CI: 0.794-0.993; P = 0.038), Cyp A levels (HR 1.009; 95% CI: 1.004-1.013; P < 0.001) had a significant effect on short-term mortality. Similar results were seen when neurologic function was used as the outcome. Kaplan-meier survival curve analysis found survival rate of patients with Cyp A level below the cut-off value was significantly higher. CONCLUSION Serum Cyp A has a certain predictive value for the prognosis of patients with different severity of craniocerebral injury. Among them, patients with severe craniocerebral injury have the highest predictive value and mild craniocerebral injury patients have the least.
Collapse
Affiliation(s)
| | | | | | | | | | - Tong Li
- Department of Intensive Care, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
4
|
Ding J, Lian J, Wang J, Yang S, Li H, Shen H, Sun Q, Li X, Chen G. The role of Tenascin C in intracerebral hemorrhage-induced secondary brain injury in rats via induction of neuronal cell death and neuroinflammation. J Chem Neuroanat 2022; 125:102147. [PMID: 36028204 DOI: 10.1016/j.jchemneu.2022.102147] [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: 03/15/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 11/17/2022]
Abstract
BACKGROUND Spontaneous intracerebral hemorrhage (ICH) is a major cause of stroke that causes high rates of disability and mortality in adults. Tenascin C (TNC) protein, one of the matricellular proteins associated with platelet-derived growth factor receptor (PDGFR) activation, has been reported to induce neuronal apoptosis. However, the role and underlying mechanisms of TNC in ICH-induced secondary brain injury (SBI) have not yet been fully explained. The main purpose of this study was to explore the role of TNC and its potential mechanisms in ICH. METHODS An ICH model was established by injecting autologous blood into the right basal ganglia in male Sprague Dawley (SD) rats, and imatinib, an inhibitor of PDGFR, was used to inhibit the release of TNC. RESULTS We found that TNC protein was significantly increased in the brain tissues after ICH and expressed in both neurons and microglia. We also found that the TNC level was elevated in the cerebrospinal fluid (CSF) after ICH. Additionally, we observed that the infiltration of activated microglia and the release of TNFα and IL-1β induced by ICH were decreased after inhibition of the protein levels of TNC and cleaved-TNC by a chemical inhibitor (imatinib). Furthermore, imatinib improved neuronal cell death and neurobehavioral abnormalities induced by ICH. CONCLUSION In summary, our study revealed that TNC protein plays an important role in ICH-induced SBI, and inhibition of TNC could alleviate ICH-induced neuroinflammation, neuronal cell death, and neurobehaviour. Therefore, TNC may be a potential therapeutic target for ICH-induced SBI.
Collapse
Affiliation(s)
- Jiasheng Ding
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China
| | - Jinrong Lian
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China
| | - Jiahe Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China
| | - Siyuan Yang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China
| | - Qing Sun
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China.
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China.
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, China
| |
Collapse
|
5
|
P2X4 Inhibition reduces microglia inflammation and apoptosis by NLRP3 and improves nervous system defects in rat brain trauma model. J Clin Neurosci 2022; 99:224-232. [DOI: 10.1016/j.jocn.2022.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/02/2022] [Accepted: 03/05/2022] [Indexed: 12/14/2022]
|
6
|
Liang H, Matei N, McBride DW, Xu Y, Zhou Z, Tang J, Luo B, Zhang JH. TGR5 activation attenuates neuroinflammation via Pellino3 inhibition of caspase-8/NLRP3 after middle cerebral artery occlusion in rats. J Neuroinflammation 2021; 18:40. [PMID: 33531049 PMCID: PMC7856773 DOI: 10.1186/s12974-021-02087-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/15/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Nucleotide-binding oligomerization domain-like receptor pyrin domain-containing protein 3 (NLRP3) plays an important role in mediating inflammatory responses during ischemic stroke. Bile acid receptor Takeda-G-protein-receptor-5 (TGR5) has been identified as an important component in regulating brain inflammatory responses. In this study, we investigated the mechanism of TGR5 in alleviating neuroinflammation after middle cerebral artery occlusion (MCAO). METHODS Sprague-Dawley rats were subjected to MCAO and TGR5 agonist INT777 was administered intranasally 1 h after MCAO. Small interfering RNAs (siRNA) targeting TGR5 and Pellino3 were administered through intracerebroventricular injection 48 h before MCAO. Infarct volumes and neurologic scores were evaluated, and ELISA, flow cytometry, immunofluorescence staining, immunoblotting, and co-immunoprecipitation were used for the evaluations. RESULTS Endogenous TGR5 and Pellino3 levels increased after MCAO. TGR5 activation by INT777 significantly decreased pro-inflammatory cytokine, cleaved caspase-8, and NLRP3 levels, thereby reducing brain infarctions; both short- and long-term neurobehavioral assessments showed improvements. Ischemic damage induced the interaction of TGR5 with Pellino3. Knockdown of either TGR5 or Pellino3 increased the accumulation of cleaved caspase-8 and NLRP3, aggravated cerebral impairments, and abolished the anti-inflammatory effects of INT777 after MCAO. CONCLUSIONS TGR5 activation attenuated brain injury by inhibiting neuroinflammation after MCAO, which could be mediated by Pellino3 inhibition of caspase-8/NLRP3.
Collapse
MESH Headings
- Administration, Intranasal
- Animals
- Brain/drug effects
- Brain/metabolism
- Caspase 8/metabolism
- Cholic Acids/administration & dosage
- Infarction, Middle Cerebral Artery/metabolism
- Infarction, Middle Cerebral Artery/prevention & control
- Inflammation Mediators/antagonists & inhibitors
- Inflammation Mediators/metabolism
- Injections, Intraventricular
- Male
- NLR Family, Pyrin Domain-Containing 3 Protein/antagonists & inhibitors
- NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
- RNA, Small Interfering/administration & dosage
- Rats
- Rats, Sprague-Dawley
- Receptors, G-Protein-Coupled/agonists
- Receptors, G-Protein-Coupled/metabolism
- Ubiquitin-Protein Ligases/antagonists & inhibitors
- Ubiquitin-Protein Ligases/metabolism
Collapse
Affiliation(s)
- Hui Liang
- Department of Neurology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA 92354 USA
| | - Nathanael Matei
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA 92354 USA
| | - Devin W. McBride
- The Vivian L. Smith Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX USA
| | - Yang Xu
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA 92354 USA
| | - Zhenhua Zhou
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA 92354 USA
| | - Jiping Tang
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA 92354 USA
| | - Benyan Luo
- Department of Neurology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - John H. Zhang
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA 92354 USA
| |
Collapse
|
7
|
Feng L, Li M, Ren J, Li Y, Wang Q, Zhang P, Zhang X, Wang T, Li Y. Proteomic Analysis Reveals that Di Dang Decoction Protects Against Acute Intracerebral Hemorrhage Stroke in Rats by Regulating S100a8, S100a9 Col1a1, and Col1a2. Neuropsychiatr Dis Treat 2021; 17:3301-3314. [PMID: 34785900 PMCID: PMC8591113 DOI: 10.2147/ndt.s331688] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/30/2021] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE The present study aimed to explore the neuroprotective mechanism of Di Dang decoction (DDD) during acute intracerebral hemorrhage (AICH) stroke in Sprague Dawley rats through proteomic analysis. METHODS A total of 135 healthy Sprague Dawley rats were randomly divided into five groups: control (n = 27), model (n = 27), DDD low-dose (n = 27), DDD medium-dose (n = 27), and DDD high-dose (n = 27). AICH stroke in rats was induced by injecting autologous blood into the caudate nucleus. The modified Neurological Severity Score (mNSS) was used to evaluate the cerebral nerve function deficit. Hematoxylin and eosin (HE) staining was performed to observe the brain tissue at the lesion site. Albumin concentration was assessed on obvious blood-brain barrier damaged and brain water content was used to evaluate the brain injury. For quantitative proteomics, proteins were extracted from the cerebral cortices. Target proteins were identified using mass spectrometer-based targeted proteomic quantification. RESULTS mNSS score, HE staining results, albumin concentration, and brain water content showed the most significant improvements in the neuroprotective in the high-dose group 7 days after DDD exposure. Furthermore, quantitative proteomics analysis showed that, relative to the control group, S100a8 and S100a9 were downregulated by 0.614 (p = 0.033702) and 0.506 times (p = 0.000024) in the high-dose group. Compared with the control group, Col1a1 and Col1a2 were upregulated by 1.319 (p = 0.000184) and 1.348 (p = 0.014097) times in the high-dose group. These results were confirmed using mass spectrometer-based targeted proteomic quantification. CONCLUSION Application of a high-dose DDD for 7 days in AICH stroke rats showed the most significant improvements in neuroprotective. Mechanistically, this effect was mediated by S100a8 and S100a9 protein downregulation and Col1a1 and Col1a2 upregulation.
Collapse
Affiliation(s)
- Lina Feng
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Mingquan Li
- Neurology Department, Third Affiliated Clinical Hospital of Changchun University of Traditional Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Jixiang Ren
- Preclinical Department, Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Yujuan Li
- Ultrasonic Diagnosis Department, Third Affiliated Clinical Hospital of Changchun University of Traditional Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Qi Wang
- College of Integrated Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Pengqi Zhang
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Xinyue Zhang
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Tianye Wang
- College of Integrated Chinese and Western Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| | - Yunqiang Li
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, People's Republic of China
| |
Collapse
|
8
|
Wu H, Yu N, Wang X, Yang Y, Liang H. Tauroursodeoxycholic acid attenuates neuronal apoptosis via the TGR5/ SIRT3 pathway after subarachnoid hemorrhage in rats. Biol Res 2020; 53:56. [PMID: 33261652 PMCID: PMC7709410 DOI: 10.1186/s40659-020-00323-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/18/2020] [Indexed: 12/22/2022] Open
Abstract
Background Neuronal apoptosis plays a critical event in the pathogenesis of early brain injury after subarachnoid hemorrhage (SAH). This study investigated the roles of Tauroursodeoxycholic acid (TUDCA) in attenuate neuronal apoptosis and underlying mechanisms after SAH. Methods Sprague–Dawley rats were subjected to model of SAH and TUDCA was administered via the internal carotid injection. Small interfering RNA (siRNA) for TGR5 were administered through intracerebroventricular injection 48 h before SAH. Neurological scores, brain water content, Western blot, TUNEL staining and immunofluorescence staining were evaluated. Results TUDCA alleviated brain water content and improved neurological scores at 24 h and 72 h after SAH. TUDCA administration prevented the reduction of SIRT3 and BCL-2 expressions, as well as the increase of BAX and cleaved caspase-3.Endogenous TGR5 expression were upregulated after SAH and treatment with TGR5 siRNA exacerbated neurological outcomes after SAH and the protective effects of TUDCA at 24 h after SAH were also abolished by TGR5 siRNA. Conclusions Our findings demonstrate that TUDCA could attenuated neuronal apoptosis and improve neurological functions through TGR5/ SIRT3 signaling pathway after SAH. TUDCA may be an attractive candidate for anti-apoptosis treatment in SAH.
Collapse
Affiliation(s)
- Huihui Wu
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Nini Yu
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xia Wang
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Yina Yang
- Department of Neurology, Ninghai People's Hospital, Ninghai, 315600, China
| | - Hui Liang
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| |
Collapse
|
9
|
Li L, Luo D, Liao Y, Peng K, Zeng Y. Mycoplasma genitalium Protein of Adhesion Induces Inflammatory Cytokines via Cyclophilin A-CD147 Activating the ERK-NF-κB Pathway in Human Urothelial Cells. Front Immunol 2020; 11:2052. [PMID: 33013867 PMCID: PMC7509115 DOI: 10.3389/fimmu.2020.02052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 07/28/2020] [Indexed: 02/02/2023] Open
Abstract
Mycoplasma genitalium protein of adhesion (MgPa) plays an important role in the process of adhesion and invasion of host cells by M. genitalium, and is thus significant for its pathogenic mechanisms in host cells. Our previous study has demonstrated that cyclophilin A (CypA) is the receptor for MgPa in human urothelial cells (SV-HUC-1) and can, therefore, mediate the adherence and invasion of M. genitalium into host cells by interacting with MgPa. However, the specific pathogenesis of M. genitalium to host cells and the possible pathogenic mechanism involved in the interaction of MgPa and CypA have never been clarified. The study aimed to elucidate the mechanism involved in the pathogenicity of MgPa. Recombinant MgPa (rMgPa) induced extracellular CypA (eCypA) was detected in SV-HUC-1 cells by ELISA, and the interaction between CypA and CD147 was validated using co-localization and co-immunoprecipitation assay. In addition, both extracellular signal-regulated kinases (ERK) phosphorylation and NF-κB activation evoked by rMgPa-induced eCypA were also demonstrated. The findings of this study verified that rMgPa could induce the secretion of eCypA in SV-HUC-1 cells and thus promote the protein and mRNA expression of IL-1β, IL-6, TNF-α and MMP-9 via CypA-CD147 interaction and thus activating ERK-NF-κB pathway, which is beneficial to elucidate the pathogenesis and possible pathogenic mechanism of M. genitalium to host cells.
Collapse
Affiliation(s)
- Lingling Li
- Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hengyang, China
| | - Dan Luo
- Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hengyang, China
| | - Yating Liao
- Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hengyang, China
| | - Kailan Peng
- Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hengyang, China
| | - Yanhua Zeng
- Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hengyang, China.,Department of Dermatology and Venereology, The First Affiliated Hospital, University of South China, Hengyang, China
| |
Collapse
|
10
|
Wu J, Li Y, Yang P, Huang Y, Lu S, Xu F. Novel Role of Carbon Monoxide in Improving Neurological Outcome After Cardiac Arrest in Aged Rats: Involvement of Inducing Mitochondrial Autophagy. J Am Heart Assoc 2020; 8:e011851. [PMID: 31030597 PMCID: PMC6512094 DOI: 10.1161/jaha.118.011851] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Background Dysfunctional mitochondria are associated with neurological injury after cardiac arrest (CA). Although carbon monoxide (CO) has shown various potential therapeutic effects in preclinical tissue injury models, its mechanism of action in CA remains unclear. We sought to investigate the effects of a novel CO‐releasing molecule on cerebral mitochondrial dysfunction and neurological injury after CA. Methods and Results Male Sprague‐Dawley rats aged 20 to 22 months were subjected to 6‐minute asphyxia CA before receiving CO treatment. Survival, neurologic deficit scores, neuronal death, mitochondrial function, and autophagy were evaluated after the return of spontaneous circulation. Results showed that CO post‐treatment increased 3‐day survival rate from 25% to 70.83% and reduced neurologic deficit scores. CO also ameliorated CA‐induced neuronal apoptosis and necrosis in the cerebral cortex and improved cerebral mitochondrial function by reducing reactive oxygen species, reversing mitochondrial membrane potential depolarization, and preventing cytochrome C release. Furthermore, CO increased mitochondrial autophagy by inducing mitochondrial accumulation of PINK1 (PTEN‐induced putative kinase 1) and Parkin. Downregulation of PINK1 with genetic silencing siRNA abolished CO‐afforded mitochondrial autophagy. Conclusions Taken together, our results indicate, for the first time, that CO treatment confers neuroprotection against ischemic neurological injury after CA possibly by promoting mitochondrial autophagy.
Collapse
Affiliation(s)
- Jun Wu
- 1 Department of Ultrasonography Medicine The Affiliated Suzhou Hospital of Nanjing University of Chinese Medicine Suzhou China
| | - Yi Li
- 2 Department of Emergency Medicine The First Affiliated Hospital of Soochow University Suzhou China
| | - Peng Yang
- 2 Department of Emergency Medicine The First Affiliated Hospital of Soochow University Suzhou China
| | - Yaping Huang
- 3 Department of Pathology The Affiliated Suzhou Hospital of Nanjing University of Chinese Medicine Suzhou China
| | - Shiqi Lu
- 2 Department of Emergency Medicine The First Affiliated Hospital of Soochow University Suzhou China
| | - Feng Xu
- 2 Department of Emergency Medicine The First Affiliated Hospital of Soochow University Suzhou China
| |
Collapse
|
11
|
Liang H, Matei N, McBride DW, Xu Y, Tang J, Luo B, Zhang JH. Activation of TGR5 protects blood brain barrier via the BRCA1/Sirt1 pathway after middle cerebral artery occlusion in rats. J Biomed Sci 2020; 27:61. [PMID: 32381096 PMCID: PMC7206796 DOI: 10.1186/s12929-020-00656-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 04/28/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The disruption of the blood-brain barrier (BBB) plays a critical event in the pathogenesis of ischemia stroke. TGR5 is recognized as a potential target for the treatment for neurologic disorders. METHODS This study investigated the roles of TGR5 activation in attenuating BBB damage and underlying mechanisms after middle cerebral artery occlusion (MCAO). Sprague-Dawley rats were subjected to model of MCAO and TGR5 agonist, INT777, was administered intranasally. Small interfering RNA (siRNA) for TGR5 and BRCA1 were administered through intracerebroventricular injection 48 h before MCAO. Infarct volumes, brain water content, BBB permeability, neurological scores, Western blot, immunofluorescence staining and co- immunoprecipitation were evaluated. RESULTS Endogenous TGR5 and BRCA1 were upregulated in the injured hemisphere after MCAO and TGR5 expressed in endothelial cells. Treatment with INT777 alleviated brain water content and BBB permeability, reduced infarction volume and improved neurological scores at 24 h and 72 h after ischemia. INT777 administration increased BRCA1 and Sirt1 expression, as well as upregulated expressions of tight junction proteins. Ischemic damage induced interaction of TGR5 with BRCA1. TGR5 siRNA and BRCA1 siRNA significantly inhibited expressions of BRCA1 and Sirt1, aggravated BBB permeability and exacerbated stroke outcomes after MCAO. The protective effects of INT777 at 24 h after MCAO were also abolished by TGR5 siRNA or BRCA1 siRNA. CONCLUSIONS Our findings demonstrate that activating TGR5 could reduce BBB breakdown and improve neurological functions through BRCA1/Sirt1 signaling pathway after MCAO. TGR5 may serve as a potential new candidate to relieve brain injury after MCAO.
Collapse
Affiliation(s)
- Hui Liang
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA, 92354, USA
| | - Nathanael Matei
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA, 92354, USA
| | - Devin W McBride
- The Vivian L. Smith Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, Texas, 77030, USA
| | - Yang Xu
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA, 92354, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA, 92354, USA
| | - Benyan Luo
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - John H Zhang
- Department of Physiology and Pharmacology and Department of Anesthesiology, Loma Linda University, 11041 Campus St, Risley Hall, Room 219, Loma Linda, CA, 92354, USA.
| |
Collapse
|
12
|
Cyclophilin a signaling induces pericyte-associated blood-brain barrier disruption after subarachnoid hemorrhage. J Neuroinflammation 2020; 17:16. [PMID: 31926558 PMCID: PMC6954572 DOI: 10.1186/s12974-020-1699-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/02/2020] [Indexed: 02/07/2023] Open
Abstract
Objective The potential roles and mechanisms of pericytes in maintaining blood–brain barrier (BBB) integrity, which would be helpful for the development of therapeutic strategies for subarachnoid hemorrhage (SAH), remain unclear. We sought to provide evidence on the potential role of pericytes in BBB disruption and possible involvement and mechanism of CypA signaling in both cultured pericytes and SAH models. Methods Three hundred fifty-three adult male C57B6J mice weighing 22 to 30 g, 29 CypA−/− mice, 30 CypA+/+ (flox/flox) mice, and 30 male neonatal C57B6J mice were used to investigate the time course of CypA expression in pericytes after SAH, the intrinsic function and mechanism of CypA in pericytes, and whether the known receptor CD147 mediates these effects. Results Our data demonstrated both intracellular CypA and CypA secretion increased after SAH and could activate CD147 receptor and downstream NF-κB pathway to induce MMP9 expression and proteolytic functions for degradation of endothelium tight junction proteins and basal membranes. CypA served as autocrine or paracrine ligand for its receptor, CD147. Although CypA could be endocytosed by pericytes, specific endocytosis inhibitor chlorpromazine did not have any effect on MMP9 activation. However, specific knockdown of CD147 could reverse the harmful effects of CypA expression in pericytes on the BBB integrity after SAH. Conclusions This study demonstrated for the first time that CypA mediated the harmful effects of pericytes on BBB disruption after SAH, which potentially mediated by CD147/NF-κB/MMP9 signal, and junction protein degradation in the brain. By targeting CypA and pericytes, this study may provide new insights on the management of SAH patients.
Collapse
|
13
|
Wang Z, Chen Z, Yang J, Yang Z, Yin J, Duan X, Shen H, Li H, Wang Z, Chen G. Treatment of secondary brain injury by perturbing postsynaptic density protein-95-NMDA receptor interaction after intracerebral hemorrhage in rats. J Cereb Blood Flow Metab 2019; 39. [PMID: 29513122 PMCID: PMC6681427 DOI: 10.1177/0271678x18762637] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Postsynaptic density protein-95 (PSD95) plays important roles in the formation, differentiation, remodeling, and maturation of neuronal synapses. This study is to estimate the potential role of PSD95 in cognitive dysfunction and synaptic injury following intracerebral hemorrhage (ICH). The interaction between PSD95 and NMDA receptor subunit NR2B-neurotransmitter nitric oxide synthase (nNOS) could form a signal protein complex mediating excitatory signaling. Besides NR2B-nNOS, PSD95 also can bind to neurexin-1-neuroligin-1 to form a complex and participates in maintaining synaptic function. In this study, we found that there were an increase in the formation of PSD95-NR2B-nNOS complex and a decrease in the formation of neurexin-1-neuroligin-1-PSD95 complex after ICH, and this was accompanied by increased neuronal death and degeneration, and behavior dysfunction. PSD95 inhibitor Tat-NR2B9c effectively inhibited the interaction between PSD95 and NR2B-nNOS, and promoted the formation of neurexin-1-nueuroligin-1-PSD95 complex. In addition, Tat-NR2B9c treatment significantly reduced neuronal death and degeneration and matrix metalloproteinase 9 activity, alleviated inflammatory response and neurobehavioral disorders, and improved the cognitive and learning ability of ICH rats. Inhibition of the formation of PSD95-NR2B-nNOS complex can rescue secondary brain injury and behavioral cognitive impairment after ICH. PSD95 is expected to be a target for improving the prognosis of patients with ICH.
Collapse
Affiliation(s)
- Zhifeng Wang
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhouqing Chen
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Junjie Yang
- 2 Institute for Cardiovascular Science & Department of Cardiovascular Surgery of the First Affiliated Hospital, Soochow University, Suzhou, China
| | - Ziying Yang
- 2 Institute for Cardiovascular Science & Department of Cardiovascular Surgery of the First Affiliated Hospital, Soochow University, Suzhou, China
| | - Jia Yin
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaochun Duan
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haitao Shen
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haiying Li
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhong Wang
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gang Chen
- 1 Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
14
|
Chen Z, Xu N, Dai X, Zhao C, Wu X, Shankar S, Huang H, Wang Z. Interleukin-33 reduces neuronal damage and white matter injury via selective microglia M2 polarization after intracerebral hemorrhage in rats. Brain Res Bull 2019; 150:127-135. [PMID: 31129170 DOI: 10.1016/j.brainresbull.2019.05.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 05/12/2019] [Accepted: 05/21/2019] [Indexed: 02/07/2023]
Abstract
Interleukin-33 (IL-33) is closely related to the regulation of immunological cells, and its receptor ST2 is a member of the interleukin-1 (IL-1) receptor family. Inflammatory responses play critical roles in neuronal damage and white matter injury (WMI) post intracerebral hemorrhage (ICH). In this study, we tried to explore the role of IL-33 in neuronal damage and WMI after ICH and the underlying mechanisms. The in vivo ICH model was performed by autologous whole blood injection into the right basal ganglia in rats. Immunoblotting, immunofluorescence, brain water content measurement, FJB staining, and TUNEL staining were applied in this study. IL-33 expression was increased in whole brain tissues post-ICH, mainly rapidly increased in ipsilateral astrocyte and microglia, but stayed at a low level in neurons. Intracerebroventricular infusion of IL-33 after ICH attenuated short-term and long-term neurological deficits, WMI, neuronal degeneration, cell death and promoted the transformation of microglia phenotype from M1 to M2 in brain tissues after ICH. These results suggest that IL-33 reduces neuronal damage and WMI by promoting microglia M2 polarization after ICH, thereby improving the outcomes of neurological function.
Collapse
Affiliation(s)
- Zhouqing Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
| | - Na Xu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China; State Key Laboratory of Medical Neurobiology and Institute of Brain Sciences, Fudan University, Shanghai, 200032, China.
| | - Xuejiao Dai
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan province, 410008, China.
| | - Chongshun Zhao
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
| | - Xin Wu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
| | - Sandhya Shankar
- Department of Neurology, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
| | - Huachen Huang
- Department of Neurology, First affiliate Hospital, Harbin Medical University, Harbin, Heilongjiang, 150001, China.
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China.
| |
Collapse
|
15
|
GATA-4 regulates neuronal apoptosis after intracerebral hemorrhage via the NF-κB/Bax/Caspase-3 pathway both in vivo and in vitro. Exp Neurol 2019; 315:21-31. [PMID: 30710529 DOI: 10.1016/j.expneurol.2019.01.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/25/2018] [Accepted: 01/29/2019] [Indexed: 12/14/2022]
Abstract
GATA-binding protein 4 (GATA-4),a member of the GATA family of transcription factors, is expressed in the normal brain and participates in the neural inflammatory response and senescence. However, few studies have investigated whether GATA-4 is involved in the brain damage induced by intracerebral hemorrhage (ICH). The aim of this study was to investigate in vivo and in vitro the role of GATA-4 in ICH-induced secondary brain injury (SBI) and its potential underlying mechanisms. A rat model of ICH was established by autologous blood injection in vivo. In vitro, oxidized hemoglobin was applied to mimic the effects of ICH in neuronal culture. The function of GATA-4 and its mechanism of action after ICH were investigated using siRNA-mediated knockdown and plasmid-mediated overexpression techniques combined with immunofluorescence, western blot, and other molecular methods. It was found that the expression of GATA-4 was increased in the brain of rats after ICH, and its phosphorylation also increased correspondingly. Furthermore, knocking down the expression of GATA-4 led to a significant decrease in neurobehavioral scores and neuronal apoptosis, indicating that secondary brain damage was improved. Conversely, the overexpression of GATA-4 aggravated brain damage. Blockade of a critical phosphorylation site on the GATA-4 overexpression plasmid alleviated the exacerbated damage in vitro and in vivo. Moreover, GATA-4 promoted the activation of NF-κB, and increased the expression of Bax, and cysteine aspartate-specific protease 3 (caspase-3) in its cleaved form, causing neuronal apoptosis. In conclusion, the expression of GATA-4 was increased in the brain of rats after ICH. GATA-4 phosphorylation mediates the function of the protein in ICH-induced SBI. Neuronal apoptosis after ICH was mainly induced by NF-κB activation, which was promoted by GATA-4.
Collapse
|
16
|
Chen ZQ, Yu H, Li HY, Shen HT, Li X, Zhang JY, Zhang ZW, Wang Z, Chen G. Negative regulation of glial Tim-3 inhibits the secretion of inflammatory factors and modulates microglia to antiinflammatory phenotype after experimental intracerebral hemorrhage in rats. CNS Neurosci Ther 2019; 25:674-684. [PMID: 30677253 PMCID: PMC6515709 DOI: 10.1111/cns.13100] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 11/19/2018] [Accepted: 12/14/2018] [Indexed: 12/13/2022] Open
Abstract
AIMS To investigate the critical role of Tim-3 in the polarization of microglia in intracerebral hemorrhage (ICH)-induced secondary brain injury (SBI). METHODS An in vivo ICH model was established by autologous whole blood injection into the right basal ganglia in rats. The primary cultured microglia were treated with oxygen-hemoglobin (OxyHb) to mimic ICH in vitro. In this experiment, specific siRNA for Tim-3 and recombinant human TIM-3 were exploited both in vivo and in vitro. RESULTS Tim-3 was increased in the brain after ICH, which mainly distributed in microglia, but not neurons and astrocytes. However, the blockade of Tim-3 by siRNA markedly reduced secretion of inflammatory factors, neuronal degeneration, neuronal cell death, and brain edema. Meanwhile, downregulation of Tim-3 promoted the transformation of microglia phenotype from M1 to M2 after ICH. Furthermore, upregulation of Tim-3 can increase the interaction between Tim-3 and Galectin-9 (Gal-9) and activate Toll-like receptor 4 (TLR-4) pathway after ICH. Increasing the expression of Tim-3 may be related to the activation of HIF-1α. CONCLUSION Tim-3 may be an important link between neuroinflammation and microglia polarization through Tim-3/Gal-9 and TLR-4 signaling pathways which induced SBI after ICH.
Collapse
Affiliation(s)
- Zhou-Qing Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hao Yu
- Department of Neurosurgery, Nantong No.1 People Hospital, Nantong, China
| | - Hai-Ying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hai-Tao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ju-Yi Zhang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhu-Wei Zhang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
17
|
Wang Y, Bao DJ, Xu B, Cheng CD, Dong YF, Wei XP, Niu CS. Neuroprotection mediated by the Wnt/Frizzled signaling pathway in early brain injury induced by subarachnoid hemorrhage. Neural Regen Res 2019; 14:1013-1024. [PMID: 30762013 PMCID: PMC6404485 DOI: 10.4103/1673-5374.250620] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The Wnt/Frizzled signaling pathway participates in many inflammation-linked diseases. However, the inflammatory response mediated by the Wnt/Frizzled signaling pathway in experimental subarachnoid hemorrhage has not been thoroughly investigated. Consequently, in this study, we examined the potential role of the Wnt/Frizzled signaling pathway in early brain injury in rat models of subarachnoid hemorrhage. Simultaneously, possible neuroprotective mechanisms were also investigated. Experimental subarachnoid hemorrhage rat models were induced by injecting autologous blood into the prechiasmatic cistern. Experiment 1 was designed to examine expression of the Wnt/Frizzled signaling pathway in early brain injury induced by subarachnoid hemorrhage. In total, 42 adult rats were divided into sham (injection of equivalent volume of saline), 6-, 12-, 24-, 48-, 72-hour, and 1-week subarachnoid hemorrhage groups. Experiment 2 was designed to examine neuroprotective mechanisms of the Wnt/Frizzled signaling pathway in early brain injury induced by subarachnoid hemorrhage. Rats were treated with recombinant human Wnt1 (rhwnt1), small interfering Wnt1 (siwnt1) RNA, and monoclonal antibody of Frizzled1 (anti-Frizzled1) at 48 hours after subarachnoid hemorrhage. Expression levels of Wnt1, Frizzled1, β-catenin, peroxisome proliferator-activated receptor-γ, CD36, and active nuclear factor-κB were examined by western blot assay and immunofluorescence staining. Microglia type conversion and inflammatory cytokine levels in brain tissue were examined by immunofluorescence staining and enzyme-linked immunosorbent assay. Our results show that compared with the sham group, expression levels of Wnt1, Frizzled1, and β-catenin were low and reduced to a minimum at 48 hours, gradually returning to baseline at 1 week after subarachnoid hemorrhage. rhwnt1 treatment markedly increased Wnt1 expression and alleviated subarachnoid hemorrhage-induced early brain injury (within 72 hours), including cortical cell apoptosis, brain edema, and neurobehavioral deficits, accompanied by increasing protein levels of β-catenin, CD36, and peroxisome proliferator-activated receptor-γ and decreasing protein levels of nuclear factor-κB. Of note, rhwnt1 promoted M2-type microglia conversion and inhibited release of inflammatory cytokines (interleukin-1β, interleukin-6, and tumor necrosis factor-α). In contrast, siwnt1 RNA and anti-Frizzled1 treatment both resulted in an opposite effect. In conclusion, the Wnt/Frizzled1 signaling pathway may participate in subarachnoid hemorrhage-induced early brain injury via inhibiting the inflammatory response, including regulating microglia type conversion and decreasing inflammatory cytokine release. The study was approved by the Animal Ethics Committee of Anhui Medical University and First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China (approval No. LLSC-20180202) in May 2017.
Collapse
Affiliation(s)
- Yang Wang
- Department of Neurosurgery, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui Province, China
| | - De-Jun Bao
- Department of Neurosurgery, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui Province, China
| | - Bin Xu
- Anhui Medical University Auhui Province Medical Genetic Center, Hefei, Anhui Province, China
| | - Chuan-Dong Cheng
- Department of Neurosurgery, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui Province, China
| | - Yong-Fei Dong
- Department of Neurosurgery, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui Province, China
| | - Xiang-Pin Wei
- Department of Neurosurgery, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui Province, China
| | - Chao-Shi Niu
- Department of Neurosurgery, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China; Anhui Province Key Laboratory of Brain Function and Brain Disease, Hefei, Anhui Province, China
| |
Collapse
|
18
|
Fan W, Li X, Zhang D, Li H, Shen H, Liu Y, Chen G. Detrimental Role of miRNA-144-3p in Intracerebral Hemorrhage Induced Secondary Brain Injury is Mediated by Formyl Peptide Receptor 2 Downregulation Both In Vivo and In Vitro. Cell Transplant 2018; 28:723-738. [PMID: 30511586 PMCID: PMC6686441 DOI: 10.1177/0963689718817219] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Although microRNA-144-3p (miRNA-144-3p) has been shown to suppress tumor proliferation and invasion, its function in intracerebral hemorrhage (ICH)-induced secondary brain injury (SBI) remains unclear. Thus, this study was designed to investigate the role of miRNA-144-3p in ICH. To accomplish this, we used adult male Sprague-Dawley rats to establish an in vivo ICH model by injecting autologous blood, while cultured primary rat cortical neurons were exposed to oxyhemoglobin (OxyHb) to mimic ICH in vitro. To examine the role of miRNA-144-3p in ICH-induced SBI, we used an miRNA-144-3p mimic and inhibitor both in vivo and in vitro. Following ICH induction, we found miRNA-144-3p expression to increase. Additionally, we predicted the formyl peptide receptor 2 (FPR2) to be a potential miRNA-144-3p target, which we validated experimentally, with FPR2 expression downregulated when miRNA-144-3p was upregulated. Furthermore, elevated miRNA-144-3p levels aggravated brain edema and neurobehavioral disorders and induced neuronal apoptosis via the downregulation of FPR2 both in vivo and in vitro. We suspected that these beneficial effects provided by FPR2 were associated with the PI3K/AKT pathway. We validated this finding by overexpressing FPR2 while inhibiting PI3K/AKT in vitro and in vivo. In conclusion, miRNA-144-3p aggravated ICH-induced SBI by targeting and downregulating FPR2, thereby contributing to neurological dysfunction and neural apoptosis via PI3K/AKT pathway activation. These findings suggest that inhibiting miRNA-144-3p may offer an effective approach to attenuating brain damage incurred after ICH and a potential therapy to improve ICH-induced SBI.
Collapse
Affiliation(s)
- Weijian Fan
- 1 Department of Neurosurgery, Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China.,2 Department of Vascular Surgery, Suzhou Hospital Affiliated of Nanjing Traditional Chinese Medicine University, Suzhou, China
| | - Xiang Li
- 1 Department of Neurosurgery, Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Dongping Zhang
- 1 Department of Neurosurgery, Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haiying Li
- 1 Department of Neurosurgery, Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haitao Shen
- 1 Department of Neurosurgery, Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yizhi Liu
- 1 Department of Neurosurgery, Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gang Chen
- 1 Department of Neurosurgery, Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
19
|
Serum cyclophilin A concentrations and prognosis of acute intracerebral hemorrhage. Clin Chim Acta 2018; 486:162-167. [DOI: 10.1016/j.cca.2018.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 07/30/2018] [Accepted: 08/01/2018] [Indexed: 11/22/2022]
|
20
|
The 90-day prognostic value of serum cyclophilin A in traumatic brain injury. Clin Chim Acta 2018; 484:258-264. [DOI: 10.1016/j.cca.2018.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 06/04/2018] [Accepted: 06/04/2018] [Indexed: 11/20/2022]
|
21
|
Lu G, Jia Z, Zu Q, Zhang J, Zhao L, Shi H. Inhibition of the cyclophilin A-CD147 interaction attenuates right ventricular injury and dysfunction after acute pulmonary embolism in rats. J Biol Chem 2018; 293:12199-12208. [PMID: 29914983 DOI: 10.1074/jbc.ra118.002845] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/30/2018] [Indexed: 12/11/2022] Open
Abstract
Acute pulmonary embolism (APE)-induced inflammation contributes to cardiomyocyte injury and dysfunction in the right ventricle (RV) of the heart. The interactions of cyclophilin A with its ligand extracellular matrix metalloproteinase inducer (EMMPRIN or CD147) may be involved in this inflammatory process. To this end, here we induced APE by intravenous injections of microspheres in Sprague-Dawley rats. We found that after the APE, cyclophilin A and CD147 levels increased synchronously in RV tissue following APE and peaked at 24 h. The cyclophilin A inhibitor cyclosporine A attenuated the APE-induced cyclophilin A levels, and a monoclonal antibody of CD147 (anti-CD147) abrogated the elevation of CD147 in the RV but not the increase of cyclophilin A. Importantly, treatment with cyclosporine A, anti-CD147, or both attenuated APE-induced increases in RV systolic pressure, plasma cardiac troponin-I (cTnI) concentrations, the RV/left ventricle diameter ratio, and the Tei index, measured by echocardiography 24 h after APE induction. These beneficial effects were associated with reduced RV neutrophil infiltration and prevention of matrix metalloproteinase 9 (MMP-9) and MMP-2 activation. These findings suggested that inhibiting the cyclophilin A-CD147 interaction attenuates APE-associated RV cardiomyocyte injury and dysfunction by suppressing inflammation. We further proposed that cyclophilin A and CD147 might participate in APE-induced pathological processes by partly activating the ERK1/2 kinase-nuclear factor-κB pathway. We conclude that the cyclophilin A-CD147 interaction may represent a potential therapeutic target for managing APE.
Collapse
Affiliation(s)
- Guangdong Lu
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Zhenyu Jia
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Qingquan Zu
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Jinxing Zhang
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Linbo Zhao
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Haibin Shi
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| |
Collapse
|
22
|
Tao L, Li D, Liu H, Jiang F, Xu Y, Cao Y, Gao R, Chen G. Neuroprotective effects of metformin on traumatic brain injury in rats associated with NF-κB and MAPK signaling pathway. Brain Res Bull 2018; 140:154-161. [PMID: 29698747 DOI: 10.1016/j.brainresbull.2018.04.008] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/18/2018] [Accepted: 04/09/2018] [Indexed: 02/08/2023]
Abstract
Traumatic brain injury (TBI) triggers a complex sequence of inflammatory responses that contribute to secondary injury. Metformin, a first-line drug used to treat type 2 diabetes, is reported to exhibit potent anti-inflammatory activity on diseases associated with the central nervous system (CNS). The aim of this study is to investigate the potential neuroprotective effects of metformin on acute brain injury after TBI and explore the underlying mechanisms. Male Sprague-Dawley (SD) rats were divided into four groups: sham group, TBI group, TBI + saline (NS) group and TBI + metformin group. A weight-dropping model was employed to induce TBI in rats. Modified neurological severity scores (mNSS) were employed to assess the short-term neurological deficits, neuronal degeneration and apoptosis in the brain tissues were assayed with Fluoro-Jade B and TUNEL staining, immunofluorescence was designed to investigate microglial activation. The mRNA and protein expression levels of pro-inflammatory cytokines such as necrosis factor-alpha (TNF-α), interleukin-beta (IL-1β) and nterleukin-6 (IL-6) were evaluated by real-time quantitative reverse transcriptase polymerase chain reaction (QPCR) and enzyme-linked immunosorbent assay (ELISA). Western blotting analysis was engaged to examine the expression of NF-κB p65 and phosphorylation of ERK1/2 and p38 MAPK. Our results showed that metformin significantly ameliorated neurological deficit, cerebral edema and neuronal apoptosis in rats following TBI. Moreover, metformin administration inhibited microglial activation and decreased the production of pro-inflammatory cytokines including TNF-α, IL-1β and IL-6. In addition, metformin inhibited the translocation of NF-κB p65 from cytoplasm into the nucleus, as well as the phosphorylation of ERK1/2 and p38 MAPK. This study suggests that metformin administration inhibits microglia activation-mediated inflammation via NF-κB and MAPK signaling pathway to improve neurobehavioral function following TBI, which provide a potential therapeutic benefit in treating brain injury.
Collapse
Affiliation(s)
- Li Tao
- Department of Pharmacy and Translational Medicine Center, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Di Li
- Department of Neurosurgery and Translational Medicine Center, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Huixiang Liu
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Feng Jiang
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Yitian Xu
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, 211166, China
| | - Ying Cao
- Department of Pharmacy, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China.
| | - Rong Gao
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China.
| | - Gang Chen
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
23
|
Zhang L, Zhang L, Liu H, Jiang F, Wang H, Li D, Gao R. Inhibition of Epac2 Attenuates Neural Cell Apoptosis and Improves Neurological Deficits in a Rat Model of Traumatic Brain Injury. Front Neurosci 2018; 12:263. [PMID: 29740274 PMCID: PMC5924794 DOI: 10.3389/fnins.2018.00263] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 04/05/2018] [Indexed: 11/13/2022] Open
Abstract
Traumatic brain injury (TBI) is a major cause of mortality and disability worldwide. TBI-induced neuronal apoptosis is one of the main contributors to the secondary injury process. The aim of this study is to investigate the involvement of Exchange protein directly activated by cAMP 2 (Epac2) on TBI. We found that the expression level of Epac2 surrounding the injured area of brain in rats of TBI model was significantly increased at 12 h after TBI. The role of Epac2 in TBI was further explored by using a selective Epac2 antagonist ESI-05 to decrease the Epac2 expression. We discovered that inhibition of Epac2 could improve the neurological impairment and attenuate brain edema following TBI. The Epac2 inhibition effectively reduced neuronal cell death and P38 MAPK signaling pathway may be involved in this process. Our results suggest that inhibition of Epac2 may be a potential therapy for TBI by reducing the neural cell death, alleviating brain edema and improving neurologic deficits.
Collapse
Affiliation(s)
- Ling Zhang
- Translational Medicine Center, The First People's Hospital of Zhangjiagang, Zhangjiagang, China.,Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Zhangjiagang, China
| | - Li Zhang
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Zhangjiagang, China
| | - Huixiang Liu
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Zhangjiagang, China
| | - Feng Jiang
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Zhangjiagang, China
| | - Huanjing Wang
- Department of Neurosurgery, Zhangjiagang Hospital of Traditional Chinese Medicine, Zhangjiagang, China
| | - Di Li
- Translational Medicine Center, The First People's Hospital of Zhangjiagang, Zhangjiagang, China
| | - Rong Gao
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Zhangjiagang, China
| |
Collapse
|
24
|
Li D, Ji JX, Xu YT, Ni HB, Rui Q, Liu HX, Jiang F, Gao R, Chen G. Inhibition of Lats1/p-YAP1 pathway mitigates neuronal apoptosis and neurological deficits in a rat model of traumatic brain injury. CNS Neurosci Ther 2018; 24:906-916. [PMID: 29488331 DOI: 10.1111/cns.12833] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 12/20/2022] Open
Abstract
AIMS To investigate the roles of Lats1/p-YAP1 pathway in TBI-induced neuronal apoptosis and neurological deficits in rats. RESULTS We found that Lats1 and YAP1 were expressed in cerebral cortex neurons of Sprague-Dawley rats, and the phosphorylation levels of Lats1 and YAP1 in injured regions were significantly increased after TBI. Furthermore, inhibition of Lats1 not only decreased the level of p-YAP1, but also attenuated neuronal apoptosis and neurological impairment. CONCLUSIONS Our work demonstrates that inhibition of Lats1/p-YAP1 pathway mitigates neuronal apoptosis and neurological deficits in a rat model of TBI.
Collapse
Affiliation(s)
- Di Li
- Department of Neurosurgery and Translational Medicine Center, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Jia-Xuan Ji
- Department of Neurosurgery, Zhangjiagang Hospital of Traditional Chinese Medicine, Nanjing University of Chinese Medicine, Suzhou, China
| | - Yi-Tian Xu
- School of Basic Medical Sciences, Nanjing Medical University, Nanjing, China
| | - Hai-Bo Ni
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Qin Rui
- Clinical laboratory, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Hui-Xiang Liu
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Feng Jiang
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Rong Gao
- Department of Neurosurgery, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Gang Chen
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
25
|
Yu Y, Cui H, Chen C, Wen G, Xu J, Zheng B, Zhang J, Wang C, Chai Y, Mei J. Hypoxia-inducible Factor-1α directs renal regeneration induced by decellularized scaffolds. Biomaterials 2018; 165:48-55. [PMID: 29501969 DOI: 10.1016/j.biomaterials.2018.02.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/19/2018] [Accepted: 02/22/2018] [Indexed: 01/09/2023]
Abstract
Although mammalian kidney regeneration has been reported to occur throughout life, mature kidneys in mammals are not thought to regenerate sufficiently, particularly glomeruli. In our previous work, we found that renal regeneration could be enhanced by decellularized renal scaffolds after partial nephrectomy. In this study, we verified that the enhanced renal regeneration mediated by decellularized scaffolds could be attributed to regenerated glomeruli, which were counted both indirectly and directly under a microscope. Using the isobaric tag for relative and absolute quantitation, we performed proteomics analysis and found that hypoxia-inducible factor (HIF)-1α may be a key factor involved in induced renal regeneration. Dimethyloxyallyl glycine (DMOG), a propyl hydroxylase inhibitor, was applied to stabilize constitutive expression of HIF-1α protein, and small interfering RNA was used to inhibit gene expression. Administration of DMOG to decellularized scaffold-grafted rats improved the induced renal regeneration, whereas siHif1α transfection decreased the regeneration capacity. These findings revealed the critical role of HIF-1α in renal regeneration and provided important insights into our understanding of kidney development and the treatment of various kidney diseases.
Collapse
Affiliation(s)
- Yaling Yu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China; Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China
| | - Haomin Cui
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Chuan Chen
- Department of Hand Surgery, Ningbo No.6 Hospital, Ningbo, 315040, China
| | - Gen Wen
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Jia Xu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Binbin Zheng
- Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China
| | - Jianse Zhang
- Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China
| | - Chunyang Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Yimin Chai
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, China.
| | - Jin Mei
- Anatomy Department, Wenzhou Medical University, Wenzhou, 325035, China.
| |
Collapse
|
26
|
Shen H, Yao X, Li H, Li X, Zhang T, Sun Q, Ji C, Chen G. Role of Exosomes Derived from miR-133b Modified MSCs in an Experimental Rat Model of Intracerebral Hemorrhage. J Mol Neurosci 2018; 64:421-430. [PMID: 29455449 DOI: 10.1007/s12031-018-1041-2] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 02/06/2018] [Indexed: 12/11/2022]
Abstract
Intracerebral hemorrhage (ICH) has poor outcomes due to high mortality and morbidity, but until now, the effective treatments remain limited. MicroRNAs (miRNAs) are vital regulators of gene expression and demonstrated to be linked to the pathogenesis of various central nervous system (CNS) diseases. Exosomes are considered as cell-to-cell communication vectors and secreted largely by mesenchymal stromal cells (MSCs). The present study investigated the role of miR-133b delivered by exosomes secreted from MSCs to brain tissues in rats after ICH. An autologous arterial blood ICH model in adult male Sprague-Dawley (SD) rats was used in this study. At 72 h after transfection with miR-133b mimics in MSCs, miR-133b-modified MSC-derived exosomes were collected from medium of MSCs and then injected to rats via tail vein. The levels of miR-133b in secreted exosomes and brain tissues of rats in various groups and the levels of RhoA, phosphorylations of extracellular signal regulating kinase (ERK1/2), and cAMP response element-binding protein (CREB) were detected by real-time PCR and western blot analysis, respectively. The effects of miR-133b on neuronal apoptosis and degeneration were respectively evaluated by TUNEL and fluoro-jade B staining. The miR-133b levels were reduced in brain tissues of rats at 24 h and peaked at 72 h after ICH. At 24 h after miR-133b-modified exosome administration, the level of miR-133b was significantly increased, while the apoptotic and neurodegenerative neurons were obviously reduced in brain tissues after ICH. The results of western blot analysis showed that miR-133b modified exosomes treatment remarkably suppressed RhoA expression and activated ERK1/2/CREB in brain tissues after ICH. Collectively, our investigation suggested that exosomes derived from miR-133b modified MSCs exhibited neuroprotective role for anti-apoptotic effect of miR-133b mediating RhoA and ERK1/2/CREB in rats after ICH.
Collapse
Affiliation(s)
- Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Xiyang Yao
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Tiejun Zhang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Qing Sun
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China.
| | - Chengyuan Ji
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China.
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| |
Collapse
|
27
|
Critical role for Annexin A7 in secondary brain injury mediated by its phosphorylation after experimental intracerebral hemorrhage in rats. Neurobiol Dis 2018; 110:82-92. [DOI: 10.1016/j.nbd.2017.11.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 10/14/2017] [Accepted: 11/27/2017] [Indexed: 01/27/2023] Open
|
28
|
Pang J, Wu Y, Peng J, Yang P, Kuai L, Qin X, Cao F, Sun X, Chen L, Vitek MP, Jiang Y. Potential implications of Apolipoprotein E in early brain injury after experimental subarachnoid hemorrhage: Involvement in the modulation of blood-brain barrier integrity. Oncotarget 2018; 7:56030-56044. [PMID: 27463015 PMCID: PMC5302894 DOI: 10.18632/oncotarget.10821] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 07/10/2016] [Indexed: 01/02/2023] Open
Abstract
Apolipoprotein E (Apoe) genetic polymorphisms have been implicated in the long term outcome of subarachnoid haemorrhage (SAH), but little is known about the effect of Apoe on the early brain injury (EBI) after SAH. This study investigated the potential role of APOE in EBI post-SAH. Multiple techniques were used to determine the early BBB disruption in EBI post-SAH in a murine model using wild-type (WT) and Apoe−/− (KO) mice. Progressive BBB disruption (Evans blue extravasation and T2 hyperintensity in magnetic resonance imaging) was observed before the peak of endogenous APOE expression elevation at 48h after SAH. Moreover, Apoe−/− mice exhibited more severe BBB disruption charcteristics after SAH than WT mice, including higher levels of Evans blue and IgG extravasation, T2 hyperintensity in magnetic resonance imaging, tight junction proteins degradation and endothelial cells death. Mechanistically, we found that APOE restores the BBB integrity in the acute stage after SAH via the cyclophilin A (CypA)-NF-κB-proinflammatory cytokines-MMP-9 signalling pathway. Consequently, although early BBB disruption causes neurological dysfunctions after SAH, we capture a different aspect of the effects of APOE on EBI after SAH that previous studies had overlooked and open up the idea of BBB disruption as a target of APOE-based therapy for EBI amelioration research in the future.
Collapse
Affiliation(s)
- Jinwei Pang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yue Wu
- Departement of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jianhua Peng
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Ping Yang
- Department of Vasculocardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Li Kuai
- Department of Ophthalmology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xinghu Qin
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Fang Cao
- Department of Neurovascular Disease, The Affiliated Hospital of Zunyi Medical College, Zunyi, China
| | - Xiaochuan Sun
- Departement of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ligang Chen
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Michael P Vitek
- Department of Medicine (Neurology), Duke University Medical Center, Durham, North Carolina, United States
| | - Yong Jiang
- Department of Neurosurgery, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| |
Collapse
|
29
|
Wang Z, Bu J, Yao X, Liu C, Shen H, Li X, Li H, Chen G. Phosphorylation at S153 as a Functional Switch of Phosphatidylethanolamine Binding Protein 1 in Cerebral Ischemia-Reperfusion Injury in Rats. Front Mol Neurosci 2017; 10:358. [PMID: 29163033 PMCID: PMC5671526 DOI: 10.3389/fnmol.2017.00358] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 10/19/2017] [Indexed: 01/07/2023] Open
Abstract
This study aimed to estimate the role of phosphatidylethanolamine binding protein 1 (PEBP1) in cerebral ischemia-reperfusion (I/R) injury and the underlying mechanisms. Middle cerebral artery occlusion/reperfusion (MCAO/R) model in adult male Sprague Dawley rats (250-280 g) were established and cultured neurons were exposed to oxygen-glucose deprivation/reoxygenation (OGD/R) to mimic I/R injury in vitro. Expression vectors encoding wild-type PEBP1 and PEBP1 with Ser153Ala mutation (S153A), PEBP1 specific siRNAs, and human recombinant PEBP1 (rhPEBP1) were administered intracerebroventricularly. Endogenous PEBP1 level and its phosphorylation at Ser153 were increased within penumbra tissue and cultured neurons after I/R, accompanied by decreased interaction between PEBP1 and Raf-1. There was a trend toward increased Raf-1/MEK/ERK/NF-κB signaling pathway and phosphatidylcholine-phospholipase C (PC-PLC) activity after I/R, which was enhanced by wild-type PEBP1overexpression and rhPEBP1 treatment and inhibited by PEBP1 (S153A) overexpression. And PEBP1 (S153A) overexpression increased its interaction with Raf-1, reduced infarct size, neuronal death and inflammation, and improved neurological function after I/R, while wild-type PEBP1overexpression exerted opposite effects, suggesting that phosphorylation at Ser153 may exert as a functional switch of PEBP1 by switching PEBP1 from Raf-1 inhibition to PC-PLC activation following I/R. Compared with PEBP1 knockdown, PEBP1 (S153A) overexpression exerted a better rescue effect on I/R injury, which further proved that PEBP1 may be a good protein gone bad with phosphorylation at S153 as a functional switch following I/R. Collectively, our findings suggest that PEBP1 contributed to neuronal death and inflammation after I/R. Selective inhibition of PEBP1 phosphorylation may be a novel approach to ameliorate I/R injury.
Collapse
Affiliation(s)
- Zhong Wang
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiyuan Bu
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiyang Yao
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Chenglin Liu
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haitao Shen
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiang Li
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haiying Li
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gang Chen
- Nerve Research Laboratory, Department of Neurosurgery and Brain, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
30
|
Li D, Ni H, Rui Q, Gao R, Chen G. Deletion of Mst1 attenuates neuronal loss and improves neurological impairment in a rat model of traumatic brain injury. Brain Res 2017; 1688:15-21. [PMID: 29054447 DOI: 10.1016/j.brainres.2017.10.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 10/10/2017] [Accepted: 10/17/2017] [Indexed: 10/18/2022]
Abstract
Neuronal cell death following traumatic brain injury (TBI) is a considerable contributor to neurological deficits. In our work, we explored the functions of Mammalian STE20-like kinase-1 (Mst1), a apoptosis-promoting kinase and also a pivotal bridgebuilder of apoptotic signaling, in the etiopathogenesis of an experimental rat model of TBI. We found that the phosphorylation level of Mst1 in injured area was significantly increased after TBI. Furthermore, we discovered that inhibition of Mst1 phosphorylation can effectively reduce neuronal cell death by inhibiting the activation of caspase 3 and suppressing the damage of DNA during TBI. In addition, the decreased of Mst1 phosphorylation level, not only reduced brain edema and blood-brain barrier (BBB) damage in injured region but also weakened the impairment of neurologic behavior during TBI. In conclusion, our work demonstrates that Mst1 plays an important role in TBI-induced neuronal cell death, suggesting that Mst1 is expected to be a potential therapeutic target for TBI.
Collapse
Affiliation(s)
- Di Li
- Department of Neurosurgery and Translational Medicine Center, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Haibo Ni
- Department of Neurosurgery, The First People 's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Qin Rui
- Clinical Laboratory, The First People's Hospital of Zhangjiagang, Soochow University, Suzhou, China
| | - Rong Gao
- Department of Neurosurgery, The First People 's Hospital of Zhangjiagang, Soochow University, Suzhou, China.
| | - Gang Chen
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
31
|
Mei B, Li H, Zhu J, Yang J, Yang Z, Wen Z, Li X, Shen H, Shen M, Chen G. Neuroprotection of Botch in experimental intracerebral hemorrhage in rats. Oncotarget 2017; 8:95346-95360. [PMID: 29221132 PMCID: PMC5707026 DOI: 10.18632/oncotarget.20524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 08/04/2017] [Indexed: 11/25/2022] Open
Abstract
Notch1 maturation participates in apoptosis and inflammation following intracerebral hemorrhage (ICH). It has been reported that Botch bound to and blocked Notch1 maturation. Here we estimated the role of Botch in ICH-induced secondary brain injury and underlying mechanisms. Experimental ICH model was induced by autologous arterial blood injection in Sprague-Dawley rats, and cultured primary rat cortical neurons were exposed to oxyhemoglobin to mimic ICH in vitro. Specific small interfering RNAs and expression plasmids encoding wild type Botch and Botch with Glu115Ala mutation were exploited. The protein levels of Botch and Notch1 transmembrane intracellular domain (Notch1-TMIC) were increased within brain tissue around hematoma. Botch overexpression led to an increase in unprocessed Notch1 full-length form accompanied by a significant decrease in Notch1-TMIC, while Botch knockdown resulted in an approximately 1.5-fold increase in Notch1-TMIC. There were increased cell apoptosis, necrosis and neurobehavioral deficits after ICH, which was inhibited by Botch overexpression and enhanced by Botch knockdown. Double immunofluorescence showed a colocalization of Botch and Notch1 in the trans-Golgi. Overexpression of wild type Botch, but not Botch E115A mutant, led to an increase in the interaction between Botch and Notch1, reduced the formation and the nuclear localization of Notch1 intracellular domain, and attenuated cell apoptosis and inflammation. In conclusion, Botch exerts neuroprotection against neuronal damage via antagonizing the maturation of Notch1 in Glu115-denpendent manner. However, neuroprotection mediated by endogenous Botch is not enough to reverse ICH-induced secondary brain injury.
Collapse
Affiliation(s)
- Binbin Mei
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Haiying Li
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Juehua Zhu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Junjie Yang
- Institute for Cardiovascular Science and Department of Cardiovascular Surgery of The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - Ziying Yang
- Institute for Cardiovascular Science and Department of Cardiovascular Surgery of The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu Province, China
| | - Zunjia Wen
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Xiang Li
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Haitao Shen
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Meifen Shen
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Gang Chen
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| |
Collapse
|
32
|
Dou Y, Shen H, Feng D, Li H, Tian X, Zhang J, Wang Z, Chen G. Tumor necrosis factor receptor-associated factor 6 participates in early brain injury after subarachnoid hemorrhage in rats through inhibiting autophagy and promoting oxidative stress. J Neurochem 2017; 142:478-492. [PMID: 28543180 DOI: 10.1111/jnc.14075] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 04/24/2017] [Accepted: 05/17/2017] [Indexed: 12/21/2022]
Abstract
Tumor necrosis factor receptor-associated factor 6 (TRAF6) is a member of the TRAF family and an important multifunctional intracellular adaptin of the tumor necrosis factor superfamily and toll/IL-1 receptor (TIR) superfamily. TRAF6 has been studied in several central nervous system diseases, including ischemic stroke, traumatic brain injury, and neurodegenerative diseases, but its role in subarachnoid hemorrhage (SAH) has not been fully illustrated. This study was designed to explore changes of expression level and potential roles and mechanisms of TRAF6 in early brain injury (EBI) after SAH using a Sprague-Dawley rat model of SAH induced in 0.3 mL non-heparinized autologous arterial blood injected into the pre-chiasmatic cistern. First, compared with the sham group, we found that the expression levels of TRAF6 increased gradually and peaked at 24 h after SAH. Second, the results showed that application of TRAF6 over-expression plasmid and genetic silencing siRNA could increase or decrease expression of TRAF6, respectively, and severely exacerbate or relieve EBI after SAH, including neuronal death, brain edema, and blood-brain barrier injury. Meanwhile, the levels of autophagy and oxidative stress were reduced and increased separately. Finally, GFP-TRAF6-C70A, which is a TRAF6 mutant that lacks E3 ubiquitin ligase activity, was used to explore the mechanism of TRAF6 in SAH, and the results showed that EBI and oxidative stress were reduced, but the levels of autophagy were increased under this condition. Collectively, these results indicated that TRAF6 affected the degree of EBI after SAH by inhibiting autophagy and promoting oxidative stress.
Collapse
Affiliation(s)
- Yang Dou
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | | | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xiaodi Tian
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jian Zhang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| |
Collapse
|
33
|
Wang Z, Zhou F, Dou Y, Tian X, Liu C, Li H, Shen H, Chen G. Melatonin Alleviates Intracerebral Hemorrhage-Induced Secondary Brain Injury in Rats via Suppressing Apoptosis, Inflammation, Oxidative Stress, DNA Damage, and Mitochondria Injury. Transl Stroke Res 2017; 9:74-91. [PMID: 28766251 PMCID: PMC5750335 DOI: 10.1007/s12975-017-0559-x] [Citation(s) in RCA: 207] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 07/20/2017] [Accepted: 07/23/2017] [Indexed: 12/12/2022]
Abstract
Intracerebral hemorrhage (ICH) is a cerebrovascular disease with high mortality and morbidity, and the effective treatment is still lacking. We designed this study to investigate the therapeutic effects and mechanisms of melatonin on the secondary brain injury (SBI) after ICH. An in vivo ICH model was induced via autologous whole blood injection into the right basal ganglia in Sprague-Dawley (SD) rats. Primary rat cortical neurons were treated with oxygen hemoglobin (OxyHb) as an in vitro ICH model. The results of the in vivo study showed that melatonin alleviated severe brain edema and behavior disorders induced by ICH. Indicators of blood-brain barrier (BBB) integrity, DNA damage, inflammation, oxidative stress, apoptosis, and mitochondria damage showed a significant increase after ICH, while melatonin reduced their levels. Meanwhile, melatonin promoted further increasing of expression levels of antioxidant indicators induced by ICH. Microscopically, TUNEL and Nissl staining showed that melatonin reduced the numbers of ICH-induced apoptotic cells. Inflammation and DNA damage indicators exhibited an identical pattern compared to those above. Additionally, the in vitro study demonstrated that melatonin reduced the apoptotic neurons induced by OxyHb and protected the mitochondrial membrane potential. Collectively, our investigation showed that melatonin ameliorated ICH-induced SBI by impacting apoptosis, inflammation, oxidative stress, DNA damage, brain edema, and BBB damage and reducing mitochondrial membrane permeability transition pore opening, and melatonin may be a potential therapeutic agent of ICH.
Collapse
Affiliation(s)
- Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Feng Zhou
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Yang Dou
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Xiaodi Tian
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Chenglin Liu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China.
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province, 215006, China.
| |
Collapse
|
34
|
Zeng J, Chen Y, Ding R, Feng L, Fu Z, Yang S, Deng X, Xie Z, Zheng S. Isoliquiritigenin alleviates early brain injury after experimental intracerebral hemorrhage via suppressing ROS- and/or NF-κB-mediated NLRP3 inflammasome activation by promoting Nrf2 antioxidant pathway. J Neuroinflammation 2017; 14:119. [PMID: 28610608 PMCID: PMC5470182 DOI: 10.1186/s12974-017-0895-5] [Citation(s) in RCA: 218] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 06/05/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Intracerebral hemorrhage (ICH) induces potently oxidative stress responses and inflammatory processes. Isoliquiritigenin (ILG) is a flavonoid with a chalcone structure and can activate nuclear factor erythroid-2 related factor 2 (Nrf2)-mediated antioxidant system, negatively regulate nuclear factor-κB (NF-κB) and nod-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome pathways, but its role and potential molecular mechanisms in the pathology following ICH remain unclear. The present study aimed to explore the effects of ILG after ICH and underlying mechanisms. METHODS ICH model was induced by collagenase IV (0.2 U in 1 μl sterile normal saline) in male Sprague-Dawley rats weighing 280-320 g. Different doses of ILG (10, 20, or 40 mg/kg) was administrated intraperitoneally at 30 min, 12 h, 24 h, and 48 h after modeling, respectively. Rats were intracerebroventricularly administrated with control scramble small interfering RNA (siRNA) or Nrf2 siRNA at 24 h before ICH induction, and after 24 h, ICH model was established with or without ILG (20 mg/kg) treatment. All rats were dedicated at 24 or 72 h after ICH. Neurological deficits, histological damages, brain water content (BWC), blood-brain barrier (BBB) disruption, and neuronal degeneration were evaluated; quantitative real-time RT-PCR (qRT-PCR), immunohistochemistry/immunofluorescence, western blot, and enzyme-linked immunosorbent assay (ELISA) were carried out; catalase, superoxide dismutase activities and reactive oxygen species (ROS), and glutathione/oxidized glutathione contents were measured. RESULTS ILG (20 and 40 mg/kg) markedly alleviated neurological deficits, histological damages, BBB disruption, brain edema, and neuronal degeneration, but there was no significant difference between two dosages. ILG (20 mg/kg) significantly suppressed the NF-κB and NLRP3 inflammasome pathways and activated Nrf2-mediated antioxidant system. Gene silencing of Nrf2 aggravated the neurological deficits, brain edema, and neuronal degeneration and increased the protein levels of NF-κB p65, NLRP3 inflammasome components, and IL-1β. ILG delivery significantly attenuated the effects of Nrf2 siRNA interference mentioned above. CONCLUSIONS Intraperitoneal administration of ILG after ICH reduced early brain impairments and neurological deficits, and the mechanisms were involved in the regulation of ROS and/or NF-κB on the activation of NLRP3 inflammasome pathway by the triggering of Nrf2 activity and Nrf2-induced antioxidant system. In addition, our experimental results may make ILG a potential candidate for a novel therapeutical strategy for ICH.
Collapse
Affiliation(s)
- Jun Zeng
- Department of Neurosurgery, Zhujiang Hospital, The National Key Clinical Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Engineering Technology Research Center of Education Ministry of China, Southern Medical University, Guangzhou, 510282, China
| | - Yizhao Chen
- Department of Neurosurgery, Zhujiang Hospital, The National Key Clinical Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Engineering Technology Research Center of Education Ministry of China, Southern Medical University, Guangzhou, 510282, China.
| | - Rui Ding
- Department of Neurosurgery, Jingmen No. 1 People's Hospital, Jingmen, 448000, Hubei, China
| | - Liang Feng
- Department of Neurosurgery, Affiliated Hospital of Xiangnan University, Chenzhou, 423000, Hunan, China
| | - Zhenghao Fu
- Department of Neurosurgery, The Fifth Affiliated Hospital of Southern Medical University, Guangzhou, 510900, Guangdong, China
| | - Shuo Yang
- Department of Neurosurgery, Gaoqing Campus of Central Hospital of Zibo, Gaoqing People's Hospital, Gaoqing, Zibo, 256300, Shandong, China
| | - Xinqing Deng
- Department of Neurosurgery, 999 Brain Hospital, Jinan University, Guangzhou, 510510, Guangdong, China
| | - Zhichong Xie
- Department of Neurosurgery, Zhujiang Hospital, The National Key Clinical Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Engineering Technology Research Center of Education Ministry of China, Southern Medical University, Guangzhou, 510282, China
| | - Shizhong Zheng
- Department of Neurosurgery, Zhujiang Hospital, The National Key Clinical Specialty, The Neurosurgery Institute of Guangdong Province, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Engineering Technology Research Center of Education Ministry of China, Southern Medical University, Guangzhou, 510282, China
| |
Collapse
|
35
|
Tian X, Sun L, Feng D, Sun Q, Dou Y, Liu C, Zhou F, Li H, Shen H, Wang Z, Chen G. HMGB1 promotes neurovascular remodeling via Rage in the late phase of subarachnoid hemorrhage. Brain Res 2017; 1670:135-145. [PMID: 28606778 DOI: 10.1016/j.brainres.2017.06.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 04/06/2017] [Accepted: 06/02/2017] [Indexed: 01/03/2023]
Abstract
High-mobility group box1 (HMGB1) is a nuclear protein widely expressed in the central nervous system. Extracellular HMGB1 serves as a proinflammatory cytokine and contributes to brain injury during the acute stage post-stroke. Recently, increasing evidence has demonstrated beneficial effects of HMGB1 in some types of brain injury, but little is known about its effects during the late phase of subarachnoid hemorrhage (SAH). This study was designed to explore the potential roles and mechanisms of HMGB1 and its receptor, receptor for advanced glycation end-products (Rage), on brain recovery in the late stage of experimental SAH. Two inhibitors of HMGB1, ethyl pyruvate and glycyrrhizin (EP and GA), and Rage antagonist FPS-ZM1 were used to determine whether HMGB1 promotes brain recovery after SAH. The administration of EP, GA, and FPS-ZM1 effectively reduced HMGB1 and Rage expression. Correspondingly, protein levels of beneficial growth factors (NGF, BDNF, and VEGF) and numbers of BrdU and DCX positive neurons in the cortex were also decreased. The biphasic roles of HMGB1 may be based on the different redox modifications of cysteine residues. In this research, rats injected with two different redox status HMGB1 showed different prognosises at 7-14day after SAH. Recombinant HMGB1 can promote cytokine stimulating activity and aggravate brain injury. However, oxidized HMGB1 was unable to stimulate TNF production but can promote brain recovery by promoting neurotrophin expression. In conclusion, our investigation identified that HMGB1 promotes neurovascular recovery via Rage and may act in the oxidized state in the late stage of SAH.
Collapse
Affiliation(s)
- Xiaodi Tian
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Liang Sun
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Dongxia Feng
- Scott & White Clinic-Temple, 2401 S.31st Street, Temple TX 76508, USA
| | - Qing Sun
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Yang Dou
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Chenglin Liu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Feng Zhou
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China.
| |
Collapse
|
36
|
Li H, Wu J, Shen H, Yao X, Liu C, Pianta S, Han J, Borlongan CV, Chen G. Autophagy in hemorrhagic stroke: Mechanisms and clinical implications. Prog Neurobiol 2017; 163-164:79-97. [PMID: 28414101 DOI: 10.1016/j.pneurobio.2017.04.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/13/2017] [Accepted: 04/08/2017] [Indexed: 02/07/2023]
Abstract
Accumulating evidence advances the critical role of autophagy in brain pathology after stroke. Investigations employing autophagy induction or inhibition using pharmacological tools or autophagy-related gene knockout mice have recently revealed the biological significance of intact and functional autophagy in stroke. Most of the reported cases attest to a pro-survival role for autophagy in stroke, by facilitating removal of damaged proteins and organelles, which can be recycled for energy generation and cellular defenses. However, these observations are difficult to reconcile with equally compelling evidence demonstrating stroke-induced upregulation of brain cell death index that parallels enhanced autophagy. This begs the question of whether drug-induced autophagy during stroke culminates in improved or worsened pathological outcomes. A corollary fascinating hypothesis, but presents as a tricky conundrum, involves the effects of autophagy on cell death and inflammation, which are two main culprits in the disease progression of stroke-induced brain injury. Evidence has extended the roles of autophagy in inflammation via cytokine regulation in an unconventional secretion manner or by targeting inflammasomes for degradation. Moreover, in the recently concluded Vancouver Autophagy Symposium (VAS) held in 2014, the potential of selective autophagy for clinical treatment has been recognized. The role of autophagy in ischemic stroke has been reviewed previously in detail. Here, we evaluate the strength of laboratory and clinical evidence by providing a comprehensive summary of the literature on autophagy, and thereafter we offer our perspectives on exploiting autophagy as a drug target for cerebral ischemia, especially in hemorrhagic stroke.
Collapse
Affiliation(s)
- Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University,188 Shizi Street, Suzhou 215006, China
| | - Jiang Wu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University,188 Shizi Street, Suzhou 215006, China
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University,188 Shizi Street, Suzhou 215006, China
| | - Xiyang Yao
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University,188 Shizi Street, Suzhou 215006, China
| | - Chenglin Liu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University,188 Shizi Street, Suzhou 215006, China
| | - S Pianta
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery & Brain Repair, University of South Florida Morsani College of Medicine,12901 Bruce B Downs Blvd Tampa, FL 33612 USA
| | - J Han
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery & Brain Repair, University of South Florida Morsani College of Medicine,12901 Bruce B Downs Blvd Tampa, FL 33612 USA
| | - C V Borlongan
- Center of Excellence for Aging and Brain Repair, Department of Neurosurgery & Brain Repair, University of South Florida Morsani College of Medicine,12901 Bruce B Downs Blvd Tampa, FL 33612 USA
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University,188 Shizi Street, Suzhou 215006, China.
| |
Collapse
|
37
|
Zhang L, Li Z, Feng D, Shen H, Tian X, Li H, Wang Z, Chen G. Involvement of Nox2 and Nox4 NADPH oxidases in early brain injury after subarachnoid hemorrhage. Free Radic Res 2017; 51:316-328. [PMID: 28330417 DOI: 10.1080/10715762.2017.1311015] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Li Zhang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Zhen Li
- Department of Neurosurgery, Jingjiang People’s Hospital, Jiangsu, Jiangsu Province, China
| | | | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Xiaodi Tian
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Zhong Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| |
Collapse
|
38
|
Li Y, Yang H, Ni W, Gu Y. Effects of deferoxamine on blood-brain barrier disruption after subarachnoid hemorrhage. PLoS One 2017; 12:e0172784. [PMID: 28249040 PMCID: PMC5332094 DOI: 10.1371/journal.pone.0172784] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 02/09/2017] [Indexed: 11/18/2022] Open
Abstract
Blood brain barrier (BBB) disruption is a key mechanism of subarachnoid hemorrhage (SAH)-induced brain injury. This study examined the mechanism of iron-induced BBB disruption after SAH and investigated the potential therapeutic effect of iron chelation on SAH. Male adult Sprague-Dawley rats had an endovascular perforation of left internal carotid artery bifurcation or sham operation. The rats were treated with deferoxamine (DFX) or vehicle (100mg/kg) for a maximum of 7 days. Brain edema, BBB leakage, behavioral and cognitive impairment were examined. In SAH rat, the peak time of brain edema and BBB impairment in the cortex was at day 3 after SAH. SAH resulted in a significant increase in ferritin expression in the cortex. The ferritin positive cells were colocalized with endothelial cells, pericytes, astrocytes, microglia and neurons. Compared with vehicle, DFX caused less ferritin upregulation, brain water content, BBB impairment, behavioral and cognitive deficits in SAH rats. The results suggest iron overload could be a therapeutic target for SAH induced BBB damage.
Collapse
Affiliation(s)
- Yanjiang Li
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, PR China
| | - Heng Yang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, PR China
| | - Wei Ni
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, PR China
- * E-mail: (WN); (YG)
| | - Yuxiang Gu
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, PR China
- * E-mail: (WN); (YG)
| |
Collapse
|
39
|
Transient receptor potential channel 1/4 reduces subarachnoid hemorrhage-induced early brain injury in rats via calcineurin-mediated NMDAR and NFAT dephosphorylation. Sci Rep 2016; 6:33577. [PMID: 27641617 PMCID: PMC5027540 DOI: 10.1038/srep33577] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 08/31/2016] [Indexed: 02/06/2023] Open
Abstract
Transient receptor potential channel 1/4 (TRPC1/4) are considered to be related to subarachnoid hemorrhage (SAH)-induced cerebral vasospasm. In this study, a SAH rat model was employed to study the roles of TRPC1/4 in the early brain injury (EBI) after SAH. Primary cultured hippocampal neurons were exposed to oxyhemoglobin to mimic SAH in vitro. The protein levels of TRPC1/4 increased and peaked at 5 days after SAH in rats. Inhibition of TRPC1/4 by SKF96365 aggravated SAH-induced EBI, such as cortical cell death (by TUNEL staining) and degenerating (by FJB staining). In addition, TRPC1/4 overexpression could increase calcineurin activity, while increased calcineurin activity could promote the dephosphorylation of N-methyl-D-aspartate receptor (NMDAR). Calcineurin antagonist FK506 could weaken the neuroprotection and the dephosphorylation of NMDAR induced by TRPC1/4 overexpression. Contrarily, calcineurin agonist chlorogenic acid inhibited SAH-induced EBI, even when siRNA intervention of TRPC1/4 was performed. Moreover, calcineurin also could lead to the nuclear transfer of nuclear factor of activated T cells (NFAT), which is a transcription factor promoting the expressions of TRPC1/4. TRPC1/4 could inhibit SAH-induced EBI by supressing the phosphorylation of NMDAR via calcineurin. TRPC1/4-induced calcineurin activation also could promote the nuclear transfer of NFAT, suggesting a positive feedback regulation of TRPC1/4 expressions.
Collapse
|
40
|
Cyclophilin A/Cluster of Differentiation 147 Interactions and Blood-Brain Barrier Disruption After Subarachnoid Hemorrhage. Crit Care Med 2016; 43:e593-4. [PMID: 26575677 DOI: 10.1097/ccm.0000000000001287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
41
|
The authors reply. Crit Care Med 2015; 43:e594. [PMID: 26575678 DOI: 10.1097/ccm.0000000000001332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|