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Wei XY, Zhang TQ, Suo R, Qu YY, Chen Y, Zhu YL. Long non-coding RNA RPL34-AS1 ameliorates oxygen-glucose deprivation-induced neuronal injury via modulating miR-223-3p/IGF1R axis. Hum Cell 2022; 35:1785-1796. [PMID: 36006565 DOI: 10.1007/s13577-022-00773-7] [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: 04/20/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022]
Abstract
Ribosomal protein L34-antisense RNA 1 (RPL34-AS1), one of the long non-coding RNAs (lncRNAs), plays an important function in regulating diverse human malignant tumors. Nevertheless, the functions of RPL34-AS1 in ischemic stroke remain unclear. The present work focused on determining the candidate targets of RPL34-AS1 and its related mechanism in ischemic injury. The oxygen-glucose deprivation (OGD/R) in vitro cell model and middle cerebral artery occlusion (MCAO) in vivo rat model were utilized to simulate the pathological process of ischemic stroke. Additionally, the CCK8, WB (detecting Bcl-2 and Bax protein levels), and caspase-3 activity assays were done to investigate the anti-apoptotic functions of RPL34-AS1. The relationship among RPL34-AS1, insulin-like growth factor 1 receptor (IGF1R), and microRNA-223-3p (miR-223-3p) was determined through luciferase reporter assay. In this study, RPL34-AS1 expression was reduced in patients suffering from ischemic stroke. The overexpression of RPL34-AS1 reduced ischemic brain damage. However, the cell viability and glucose uptake were increased, and the apoptosis rate was decreased in the OGD/R-induced neurons. Further, miR-223-3p resulted in the decreased cell viability and glucose uptake and the increased cell apoptosis to cause ischemic brain damage. Besides, the neuroprotective effects of RPL34-AS1 on OGD/R injury were partly reversed by miR-223-3p. Mechanistically, lncRNA RPL34-AS1 could function as the competing endogenous RNA (ceRNA) of miR-223-3p to regulate IGF1R. Collectively, our study demonstrated that lncRNA RPL34-AS1 attenuated OGD/R-induced neuronal injury by mediating miR-223-3p/IGF1R axis. This discovery might serve as the candidate therapeutic target for ischemic stroke.
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Affiliation(s)
- Xin-Ya Wei
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, People's Republic of China.,Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No. 246, Xuefu Road, Nangang District, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Tian-Qi Zhang
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Rui Suo
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No. 246, Xuefu Road, Nangang District, Harbin, 150001, Heilongjiang, People's Republic of China
| | - You-Yang Qu
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No. 246, Xuefu Road, Nangang District, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Yan Chen
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No. 246, Xuefu Road, Nangang District, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Yu-Lan Zhu
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No. 246, Xuefu Road, Nangang District, Harbin, 150001, Heilongjiang, People's Republic of China.
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Luo J, Chen D, Qin B, Kong D. Molecular mechanisms for the prevention and promoting the recovery from ischemic stroke by nutraceutical laminarin: A comparative transcriptomic approach. Front Nutr 2022; 9:999426. [PMID: 36118760 PMCID: PMC9479852 DOI: 10.3389/fnut.2022.999426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/08/2022] [Indexed: 11/23/2022] Open
Abstract
Stroke is the second leading cause of death and a major cause of disability worldwide. Ischemic stroke caused by atherosclerosis accounts for approximately 87% of all stroke cases. Ischemic stroke is a preventable disease; therefore, a better understanding of the molecular mechanisms underlying its pathogenesis and recovery processes could provide therapeutic targets for drug development and reduce the associated mortality rate. Laminarin, a polysaccharide, is a nutraceutical that can be found in brown algae. Accumulating evidence suggests that laminarin could reduce the detrimental effects of neuroinflammation on brain damage after stroke. However, the molecular mechanism underlying its beneficial effects remains largely unknown. In the present study, we used a middle cerebral artery occlusion (MCAO) rat model and applied comparative transcriptomics to investigate the molecular targets and pathways involved in the beneficial effects of laminarin on ischemic stroke. Our results show the involvement of laminarin targets in biological processes related to blood circulation, oxygen supply, and anti-inflammatory responses in the normal brain. More importantly, laminarin treatment attenuated brain damage and neurodeficits caused by ischemic stroke. These beneficial effects are controlled by biological processes related to blood vessel development and brain cell death through the regulation of canonical pathways. Our study, for the first time, delineated the molecular mechanisms underlying the beneficial effects of laminarin on ischemic stroke prevention and recovery and provides novel therapeutic targets for drug development against ischemic stroke.
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153
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Wang J, Chen X, Sun L, Chen X, Li H, Xiong B, Wang H. [Long noncoding RNA ZEB1-AS1 aggravates cerebral ischemia/reperfusion injury in rats through the HMGB1/TLR-4 signaling axis]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:1134-1142. [PMID: 36073211 DOI: 10.12122/j.issn.1673-4254.2022.08.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the role of long non-coding RNA ZEB1-AS1 in cerebral ischemia/reperfusion injury (CI/RI). METHODS We detected the temporal changes of ZEB1-AS1 and HMGB1 expression using qPCR and Western blotting in SD rats following CI/RI induced by middle cerebral artery occlusion (MCAO). The rat models of CI/RI were subjected to injections of vectors for ZEB1-AS1 overexpression or knockdown into the lateral ventricle, and the changes in cognitive function, brain water content, blood-brain barrier integrity, and IL-1β and TNF-α levels in the cerebrospinal fluid (CSF) and serum were observed. Neuronal loss and cell apoptosis in the cortex of the rat models were detected by FJC and TUNEL methods, and HMGB1 and TLR-4 expressions were analyzed with Western blotting. We also examined the effects of ZEB1-AS1 knockdown on apoptosis and expressions of HMGB1 and TLR-4 in SH-SY5Y cells with oxygen-glucose deprivation/reoxygenation (OGD/R). RESULTS In CI/RI rats, the expressions of ZEB1-AS1 and HMGB1 in the brain tissue increased progressively with the extension of reperfusion time, reaching the peak levels at 24 h followed by a gradual decline. ZEB1-AS1 overexpression significantly aggravated icognitive impairment and increased brain water content, albumin content in the CSF, and IL-1β and TNF-α levels in the CSF and serum in CI/RI rats (P < 0.05), while ZEB1-AS1 knockdown produced the opposite effects (P < 0.05 or 0.01). ZEB1-AS1 overexpression obviously increased the number of FJC-positive neurons in the cortex and enhanced the expressions of HMGB1 and TLR-4 in the rat models (P < 0.01); ZEB1-AS1 knockdown significantly reduced the number of FJC-positive neurons and lowered HMGB1 and TLR-4 expressions (P < 0.01). In SH-SY5Y cells with OGD/R, ZEB1-AS1 knockdown significantly suppressed cell apoptosis and lowered the expressions of HMGB1 and TLR-4 (P < 0.01). CONCLUSION ZEB1-AS1 overexpression aggravates CI/RI in rats through the HMGB1/TLR-4 signaling axis.
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Affiliation(s)
- J Wang
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
| | - X Chen
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
| | - L Sun
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
| | - X Chen
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - H Li
- Graduate School, Wannan Medical College, Wuhu 241002, China
| | - B Xiong
- College of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - H Wang
- College of Basic Medical Sciences, Wannan Medical College, Wuhu 241002, China
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Xia L, Xu T, Zhan Z, Wu Y, Xu Y, Cao Y, Han Z. High ratio of monocytes to high-density lipoprotein is associated with hemorrhagic transformation in acute ischemic stroke patients on intravenous thrombolysis. Front Aging Neurosci 2022; 14:977332. [PMID: 36051305 PMCID: PMC9424860 DOI: 10.3389/fnagi.2022.977332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 07/28/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundHemorrhagic transformation (HT) is a frequent, serious complication in acute ischemic stroke patients on intravenous thrombolysis. Here we investigated whether risk of HT is associated with the ratio of monocyte count to high-density lipoprotein level (MHR).Materials and methodsMedical records were retrospectively examined for consecutive patients with acute ischemic stroke who received thrombolytic therapy. HT was diagnosed by computed tomography at 24–36 h after therapy. Potential association between MHR and HT was examined using logistic regression.ResultsA total of 340 patients were analyzed, and their median MHR was 0.44 (0.31–0.59). MHR was higher in the 51 patients (15.0%) with HT than in those who did not suffer HT (0.53 vs. 0.42, P = 0.001). Multivariate logistic regression showed that, after adjusting for potential confounders, MHR was an independent risk factor for HT (OR 7.50, 95% CI 1.64 to 34.35, P = 0.009). Risk of HT was significantly higher among patients whose MHR fell in the third quartile (0.42–0.53) and the fourth quartile (> 0.53) than among those with MHR in the first quartile (< 0.31; OR 3.53, 95% CI 1.11 to 11.20, P = 0.032; OR 4.79, 95% CI 1.49 to 15.42, P = 0.009).ConclusionHigh MHR may be independently associated with higher risk of HT in patients with acute ischemic stroke on intravenous thrombolysis.
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Li X, Cheng Z, Chen X, Yang D, Li H, Deng Y. Purpurogallin improves neurological functions of cerebral ischemia and reperfusion mice by inhibiting endoplasmic reticulum stress and neuroinflammation. Int Immunopharmacol 2022; 111:109057. [PMID: 35964408 DOI: 10.1016/j.intimp.2022.109057] [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: 09/02/2021] [Revised: 06/23/2022] [Accepted: 07/11/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Purpurogallin (PPG) has been testified to have neuroprotective effects. This study intends to probe the neuroprotection of PPG on cerebral ischemia/reperfusion (I/R) injury and its potential mechanism. METHODS C57/B6 mice, BV2 microglia and HT22 hippocampal neurons were used for in-vivo and in-vitro experiments. I/R injury models were constructed using middle cerebral artery occlusion (MCAO/R) and oxygen-glucose deprivation/reoxygenation (OGD/R), respectively. The expression of apoptosis and inflammatory proteins, and endoplasmic reticulum (ER) stress proteins were gauged by Western blotting (WB). The contents of inflammatory cytokines in OGD/R-induced BV2 microglia were testified by enzyme-linked immunosorbent assay (ELISA). Cell counting kit-8 (CCK-8), TUNEL assay and flow cytometry (FCM) were utilized to examine the viability and apoptosis of cells. The neurological, learning and memory functions were evaluated by the modified neurological severity score (mNSS) and water maze experiment. 2, 3, 5-triphenyltetrazole chloride (TTC) staining was utilized to calculate the volume of cerebral infarction and cerebral edema in the peri-infarct area. Apoptosis-related proteins, inflammation-related proteins and ER stress proteins were gauged by WB. ELISA was conducted to verify inflammatory cytokines. RESULTS PPG treatment notably abated the expression of ER stress proteins and inflammatory factors in OGD/R-induced BV2 microglia and boosted HT22 neuron's viability and eased their apoptosis in comparison to the control group. In vivo, PPG treatment signally lessened cerebral infarct area, cerebral edema, and neurological deficit scores in MCAO/R mice. Additionally, PPG caused a dramatic decline in neuronal apoptosis and levels of ER stress proteins and inflammatory factors in the brain's peri-infarct region of MCAO/R mice. Mechanically, PPG blocked the TLR4/NF-κB pathway in OGD/R-induced BV2, HT22 neurons, and the MCAO/R mice. CONCLUSION PPG attenuates brain I/R damage probably by suppressing ER stress and neuroinflammation via inactivation of the TLR4/NF-κB pathway, suggesting that PPG may be a candidate drug for treating cerebral I/R injury.
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Affiliation(s)
- Xinming Li
- Department of Neurology, The First Hospital of Nanchang, Nanchang, Jiangxi 330006, China.
| | - Zongxin Cheng
- Department of Neurology, The First Hospital of Nanchang, Nanchang, Jiangxi 330006, China
| | - Xiaohong Chen
- Department of Neurology, The First Hospital of Nanchang, Nanchang, Jiangxi 330006, China
| | - Dejiang Yang
- Department of Neurology, The First Hospital of Nanchang, Nanchang, Jiangxi 330006, China
| | - Huanhuan Li
- Department of Neurology, The First Hospital of Nanchang, Nanchang, Jiangxi 330006, China
| | - Youqing Deng
- Department of Neurology, The First Hospital of Nanchang, Nanchang, Jiangxi 330006, China
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Serum Periostin May Help to Identify Patients with Poor Collaterals in the Hyperacute Phase of Ischemic Stroke. Diagnostics (Basel) 2022; 12:diagnostics12081942. [PMID: 36010292 PMCID: PMC9406779 DOI: 10.3390/diagnostics12081942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 11/29/2022] Open
Abstract
Background: Periostin is a glycoprotein that mediates cell functions in the extracellular matrix and appears to be a promising biomarker in neurological damage, such as ischemic stroke (IS). We aimed to measure serum periostin levels in the hyperacute phase of ischemic stroke to explore its predictive power in identification of patients with poor collaterals (ASPECT < 6). Methods: We prospectively enrolled 122 patients with acute ischemic stroke within the first 6 h after onset. The early ischemic changes were evaluated by calculating ASPECT score on admission using a native CT scan. An unfavorable outcome was defined as the modified Rankin Scale (mRS) > 2 at 90 days follow-up. Blood samples were collected on admission immediately after CT scan and periostin serum concentrations were determined by ELISA. Results: The admission concentration of serum periostin was significantly higher in patients with unfavorable outcome than in patients with favorable outcome (615 ng/L, IQR: 443−1070 vs. 390 ng/L, 260−563, p < 0.001). In a binary logistic regression model, serum periostin level was a significant predictor for ASPECT < 6 status on admission, within 6 h after stroke onset (OR, 5.911; CI, 0.990−0.999; p = 0.015). Conclusion: Admission periostin levels can help to identify patients who are not suitable for neurointervention, especially if advanced neuroimaging is not available.
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157
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The Association between Systemic Immune-Inflammation Index and All-Cause Mortality in Acute Ischemic Stroke Patients: Analysis from the MIMIC-IV Database. Emerg Med Int 2022; 2022:4156489. [PMID: 35959219 PMCID: PMC9363175 DOI: 10.1155/2022/4156489] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 06/16/2022] [Accepted: 07/07/2022] [Indexed: 12/31/2022] Open
Abstract
Purpose. Acute ischemic stroke (AIS) is a devastating disease and remains the leading cause of death and disability. This retrospective study aims to investigate associations between systemic immune-inflammation index (SII) and all-cause mortality in patients with AIS. Patients and Methods. We used the data from Medical Information Mart for Intensive Care IV. A total of 1,181 patients with acute ischemic stroke (AIS) were included. Systemic immune-inflammation index (SII) was calculated as platelet count (/L) × neutrophil count (/L)/lymphocyte count (/L). The main outcomes were 30-day all-cause mortality. The association between SII with mortality was evaluated using the Cox proportional hazards regression model. Results. After adjusting for potential covariates, the highest quartiles of SII versus the lowest quartiles of SII, the HR was 2.74 (CI 1.79–4.19,
). Log-transformed SII was significantly associated with 30-day all-cause mortality (HR 2.44; CI 1.72–3.46,
). Furthermore, we found that there is a nearly linear relationship (
) between logarithmic transformed SII with all-cause mortality. Conclusion. Elevated SII of patients with acute ischemic stroke increased the risk of 30-day all-cause mortality. SII may serve as a useful marker to elucidate the role of thrombocytosis, inflammation, and immunity interaction in the development of AIS.
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Zeng Y, Zhang W, Xue T, Zhang D, Lv M, Jiang Y. Sphk1-induced autophagy in microglia promotes neuronal injury following cerebral ischaemia-reperfusion. Eur J Neurosci 2022; 56:4287-4303. [PMID: 35766986 DOI: 10.1111/ejn.15749] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/20/2022] [Accepted: 06/24/2022] [Indexed: 12/16/2022]
Abstract
Microglial hyperactivation mediated by sphingosine kinase 1/sphingosine-1-phosphate (SphK1/S1P) signalling and the consequent inflammatory mediator production serve as the key drivers of cerebral ischaemia-reperfusion injury (CIRI). Although SphK1 reportedly controls autophagy and microglial activation, it remains uncertain as to whether SphK1 is similarly capable of regulating damage mediated by CIRI-activated microglia. In the current study, we adopted both in vitro oxygen-glucose deprivation reperfusion (OGDR) models and in vivo rat models of focal CIRI to ascertain this possibility. It was found that CIRI upregulated SphK1 and induced autophagy in microglia, while inhibiting these changes significantly impaired to prevented neuronal apoptosis. Results of mechanistic investigation revealed that SphK1 promoted autophagy via the tumour necrosis factor receptor associated factor 2 (TRAF2) pathway. Altogether, our findings unfolded to reveal a novel mechanism, whereby SphK1-induced autophagy in microglia contributed to the pathogenesis of CIRI, potentially highlighting novel avenues for future therapeutic intervention in ischaemic stroke patients.
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Affiliation(s)
- Yuanyuan Zeng
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei Zhang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Tengteng Xue
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Dayong Zhang
- Department of New Media and Arts, Harbin Institute of Technology, Harbin, China
| | - Manhua Lv
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yongjia Jiang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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159
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Sadeghi F, Sarkady F, Zsóri KS, Szegedi I, Orbán-Kálmándi R, Székely EG, Vasas N, Berényi E, Csiba L, Bagoly Z, Shemirani AH. High Neutrophil-Lymphocyte Ratio and Low Lymphocyte-Monocyte Ratio Combination after Thrombolysis Is a Potential Predictor of Poor Functional Outcome of Acute Ischemic Stroke. J Pers Med 2022; 12:1221. [PMID: 35893315 PMCID: PMC9332832 DOI: 10.3390/jpm12081221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/21/2022] [Accepted: 07/25/2022] [Indexed: 11/24/2022] Open
Abstract
(1) Background: Ischemic stroke is one of the leading causes of death and disability. An inflammatory response is observed in multiple stages of cerebral ischemia, particularly in the acute phase. Recent publications revealed that the neutrophil−lymphocyte ratio (NLR) and lymphocyte−monocyte ratio (LMR) may be used to predict long-term prognosis in acute ischemic stroke (AIS) after thrombolysis. To test whether there is a relationship between the combination of these parameters and long-term prognosis, we analyzed the NLR−LMR combination in AIS patients treated with intravenous recombinant tissue plasminogen activator (rtPA); (2) Methods: The study included 285 adults with a diagnosis of AIS and rtPA treatment within a 4.5 h time window. Blood samples were obtained at admission and 24 h after thrombolysis to calculate pre- and post-thrombolysis NLR and LMR. Clinical data, including NIHSS was registered on admission and day 1. The long-term outcome was defined 90 days post-event by the modified Rankin Scale (mRS). Therapy-associated intracranial hemorrhage (ICH) was classified according to ECASS II. Receiver operating characteristic curve (ROC) analysis was performed to determine optimal cutoffs of NLR and LMR as predictors of therapy outcomes; (3) Results: Patients were stratified by cutoffs of 5.73 for NLR and 2.08 for LMR. The multivariate logistic regression model, including all possible confounders, displayed no significant association between NLR or LMR with 3-months functional prognosis. The combination of high NLR−low LMR vs. low NRL−high LMR as obtained 24 h after thrombolysis was found to be an independent predictor of poor 3-months functional outcome (mRS ≥ 2; OR 3.407, 95% CI 1.449 to 8.011, p = 0.005). The proportion of patients between low NLR−high LMR and high NLR−low LMR groups from admission to day 1 showed no significant change in the good outcome group. On the other hand, in the poor outcome group (mRS ≥ 2), low NLR−high LMR and high NLR−low LMR groups displayed a significant shift in patient proportions from 67% and 21% at admission (p = 0.001) to 36% and 49% at 24 h after thrombolysis (p < 0.001), respectively; (4) Conclusions: Our study demonstrated for the first time that a high NLR−low LMR combination as observed at 24 h after thrombolysis can serve as an independent predictor of 3-months poor outcome in AIS patients. This simple and readily available data may help clinicians to improve the prognostic estimation of patients and may provide guidance in selecting patients for personalized and intensified care post-thrombolysis.
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Affiliation(s)
- Farzaneh Sadeghi
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (F.S.); (F.S.); (R.O.-K.); (E.G.S.); (Z.B.)
| | - Ferenc Sarkady
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (F.S.); (F.S.); (R.O.-K.); (E.G.S.); (Z.B.)
| | - Katalin S. Zsóri
- Central Pharmacy, Szent Borbála Hospital, 2800 Tatabánya, Hungary;
| | - István Szegedi
- Doctoral School of Neuroscience, Department of Neurology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (I.S.); (N.V.)
| | - Rita Orbán-Kálmándi
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (F.S.); (F.S.); (R.O.-K.); (E.G.S.); (Z.B.)
| | - Edina G. Székely
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (F.S.); (F.S.); (R.O.-K.); (E.G.S.); (Z.B.)
| | - Nikolett Vasas
- Doctoral School of Neuroscience, Department of Neurology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (I.S.); (N.V.)
| | - Ervin Berényi
- Department of Radiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (E.B.); (L.C.)
| | - László Csiba
- Department of Radiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (E.B.); (L.C.)
- ELKH-DE Cerebrovascular and Neurodegenerative Research Group, 4032 Debrecen, Hungary
| | - Zsuzsa Bagoly
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (F.S.); (F.S.); (R.O.-K.); (E.G.S.); (Z.B.)
- ELKH-DE Cerebrovascular and Neurodegenerative Research Group, 4032 Debrecen, Hungary
| | - Amir H. Shemirani
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (F.S.); (F.S.); (R.O.-K.); (E.G.S.); (Z.B.)
- Central Laboratory, Szent Borbála Hospital, 2800 Tatabanya, Hungary
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The Influence of Periodontal Diseases and the Stimulation of Saliva Secretion on the Course of the Acute Phase of Ischemic Stroke. J Clin Med 2022; 11:jcm11154321. [PMID: 35893412 PMCID: PMC9329893 DOI: 10.3390/jcm11154321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/14/2022] [Accepted: 07/23/2022] [Indexed: 12/04/2022] Open
Abstract
Background and purpose: The course of an ischemic stroke depends on many factors. The influence of periodontal diseases and the stimulation of salivation on the course and severity of stroke remains unresolved. Therefore, the aim of the study was to analyze the severity of ischemic stroke depending on the occurrence of periodontal diseases and saliva stimulation. Methods: The severity of the neurological condition was assessed using the NIHSS scale on days one, three and seven of stroke. The incidence of periodontal diseases was classified using the Hall’s scale in the first day of stroke. On days one and seven of stroke, the concentration of IL-1β, MMP-8, OPG and RANKL in the patients’ saliva was assessed using the Elisa technique. At the same time, the level of CRP and the number of leukocytes in the peripheral blood were tested on days one, three and seven of the stroke, and the incidence of upper respiratory and urinary tract infections was assessed. Results:100 consecutive patients with their first ever ischemic stroke were enrolled in the study. 56 randomly selected patients were subjected to the stimulation of salivation, the remaining patients were not stimulated. In the study of the severity of the neurological condition using the NIHS scale on days three and seven of stroke, the degree of deficit in patients without periodontal disease significantly improved compared to patients with periodontal disease, respectively (p < 0.01 and p = 0.01). Patients from the stimulated group had more severe neurological deficit at baseline (p = 0.04). On days three and seven of neurological follow-up, the condition of patients from both groups improved with a further distinct advantage of the unstimulated group over the stimulated group, respectively (p = 0.03 and p < 0.001). In patients from both groups, a statistically significant decrease in CRP and lymphocyte levels was observed on day seven in relation to day one. Conclusions: The occurrence of periodontal disease in a patient with stroke affects the severity of stroke. Stimulation of the mouth and salivary glands in these patients may have a positive effect on the course of stroke, taking into account the dynamics of neurological symptoms.
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161
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Kim TJ, Park SH, Ko SB. Dynamic change of neutrophil-to-lymphocyte ratio and symptomatic intracerebral hemorrhage after endovascular recanalization therapy. J Stroke Cerebrovasc Dis 2022; 31:106604. [PMID: 35843053 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 06/12/2022] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES The neutrophil-to-lymphocyte ratio (NLR) is a known marker of systemic inflammation. Recent studies demonstrated its applicability as a marker of poor prognosis for stroke patients. In this study, we evaluated the relationship between dynamic changes in the NLR and sICH in patients with successful recanalization following ERT. MATERIALS AND METHODS This study included 128 patients with acute ischemic stroke who underwent successful ERT between January 2013 and November 2019. We evaluated the NLR pre-ERT (at admission) and post-ERT (at 24-36 h after ERT). The symptomatic ICH and miserable outcomes at 3 months after ERT were analyzed as outcomes. sICH was defined as type-2 parenchymal hematoma with neurological deterioration (defined as National Institute of Health Stroke Scale score ≥4). Moreover, a modified Rankin Scale score of 5-6 at 3 months was considered a miserable outcome. RESULTS Among the included patients, sICH occurred in 12 (9.4%). The sICH group had significantly higher post-ERT NLR (P < 0.001) and ∆NLR (calculated as the difference between pre-ERT NLR and post-ERT NLR) (P = 0.004). In the multivariate analysis, the post-ERT NLR was independently associated with sICH (odds ratio [OR], 1.166; 95% confidence interval [CI], 1.041-1.306; P = 0.008) and miserable outcome at 3 months (OR, 1.101; 95% CI, 1.002-1.210; P = 0.045). CONCLUSIONS This study demonstrated that temporal elevation of the NLR is associated with sICH events after successful ERT in patients with acute ischemic stroke. The temporal variation in NLR may help to identify high-risk patients with sICH after ERT.
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Affiliation(s)
- Tae Jung Kim
- Department of Neurology, Seoul National University, College of Medicine, Seoul, Korea; Department of Critical Care Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Soo-Hyun Park
- Department of Neurology, Inha University Hospital, Incheon, South Korea; Department of Neurology, Seoul National University, College of Medicine, Seoul, Korea
| | - Sang-Bae Ko
- Department of Neurology, Seoul National University, College of Medicine, Seoul, Korea; Department of Critical Care Medicine, Seoul National University Hospital, Seoul, South Korea.
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Zhang Y, Wang Y, Wu W, Liu P, Sun S, Hong M, Yuan Y, Xia Q, Chen Z. Elevation of neutrophil carcinoembryonic antigen-related cell adhesion molecule 1 associated with multiple inflammatory mediators was related to different clinical stages in ischemic stroke patients. J Clin Lab Anal 2022; 36:e24526. [PMID: 35657334 PMCID: PMC9279952 DOI: 10.1002/jcla.24526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/20/2022] [Accepted: 04/27/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND We aimed to analyze the level of carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) in neutrophils of ischemic stroke (IS) patients at different stages, together with its roles in neutrophils. PATIENTS AND METHODS Sixty-seven patients were classified into acute phase group (n = 19), subacute phase group (n = 28), and stable phase group (n = 20), and 20 healthy individuals who had received physical examination at the same time period as healthy control. We then analyzed the expression level of CEACAM1 and cell viability in CEACAM1 positive and CEACAM1 negative neutrophils by flow cytometry and the content of plasma CEACAM1, neutrophil gelatinase-associated lipocalin (NGAL), matrix metalloproteinases-9 (MMP-9) was measured using enzyme-linked immunosorbent assay (ELISA), while that of interleukin-10 (IL-10) and tumor necrosis factor (TNF) was determined using a Human Enhanced Sensitivity Flex set. RESULTS Compared with healthy control, the percentage of CEACAM1 positive neutrophils in IS patients showed a significant increase, and a significant increase was also noticed in the content of plasma CEACAM1 at the subacute stage. Reduction in cell viability was observed in CEACAM1 positive neutrophils compared with CEACAM1 negative counterparts. There was a positive correlation between CEACAM1 expression rate in neutrophils and plasma CEACAM1 and IL-10 content in the subacute group. Compared with acute group and healthy control group, there was an instinct increase in the level of plasma MMP-9 and NGAL in subacute group. CONCLUSIONS Our data showed that there was a rapid increase of CEACAM1 in neutrophils at the acute stage of IS. We speculated that CEACAM1 may serve as an inhibitory regulator involving in the progression of IS.
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Affiliation(s)
- Yi Zhang
- Department of Laboratory MedicineThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
- Key Laboratory of Clinical In Vitro Diagnostic Techniques of Zhejiang ProvinceHangzhouChina
| | - Yijie Wang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Wei Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Ping Liu
- Department of NeurologyThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Shanshan Sun
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Meng Hong
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Yuan Yuan
- Department of NeurologyThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Qi Xia
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Zhi Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
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Ji Y, Xu X, Wu K, Sun Y, Wang H, Guo Y, Yang K, Xu J, Yang Q, Huang X, Zhou Z. Prognosis of Ischemic Stroke Patients Undergoing Endovascular Thrombectomy is Influenced by Systemic Inflammatory Index Through Malignant Brain Edema. Clin Interv Aging 2022; 17:1001-1012. [PMID: 35814350 PMCID: PMC9259057 DOI: 10.2147/cia.s365553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/21/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose Patients and Methods Results Conclusion
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Affiliation(s)
- Yachen Ji
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Xiangjun Xu
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Kangfei Wu
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Yi Sun
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Hao Wang
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Yapeng Guo
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Ke Yang
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Junfeng Xu
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Qian Yang
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Xianjun Huang
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
| | - Zhiming Zhou
- Department of Neurology, The First Affiliated Hospital of Wannan Medical College, Wuhu, People’s Republic of China
- Correspondence: Xianjun Huang; Zhiming Zhou, Department of Neurology, The First Affiliated Hospital of Wannan Medical College, 2# East Zheshan Road, Wuhu, 241000, People’s Republic of China, Tel +86-25-80860124, Fax +86-25-84664563, Email ;
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Intervention of neuroinflammation in the traumatic brain injury trajectory: In vivo and clinical approaches. Int Immunopharmacol 2022; 108:108902. [DOI: 10.1016/j.intimp.2022.108902] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/25/2022] [Accepted: 05/24/2022] [Indexed: 12/11/2022]
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165
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Hippocampal infarction: redefining transient global amnesia. Neurol Sci 2022; 43:4281-4286. [DOI: 10.1007/s10072-022-05980-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 02/21/2022] [Indexed: 10/18/2022]
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Targeted BRD4 protein degradation by dBET1 ameliorates acute ischemic brain injury and improves functional outcomes associated with reduced neuroinflammation and oxidative stress and preservation of blood-brain barrier integrity. J Neuroinflammation 2022; 19:168. [PMID: 35761277 PMCID: PMC9237998 DOI: 10.1186/s12974-022-02533-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/16/2022] [Indexed: 11/22/2022] Open
Abstract
Bromodomain-containing protein 4 (BRD4), a member of the bromodomain and extra-terminal domain (BET) protein family, plays a crucial role in regulating inflammation and oxidative stress that are tightly related to stroke development and progression. Consequently, BRD4 blockade has attracted increasing interest for associated neurological diseases, including stroke. dBET1 is a novel and effective BRD4 degrader through the proteolysis-targeting chimera (PROTAC) strategy. We hypothesized that dBET1 protects against brain damage and neurological deficits in a transient focal ischemic stroke mouse model by reducing inflammation and oxidative stress and preserving the blood–brain barrier (BBB) integrity. Post-ischemic dBET1 treatment starting 4 h after stroke onset significantly ameliorated severe neurological deficits and reduced infarct volume 48 h after stroke. dBET1 markedly reduced inflammation and oxidative stress after stroke, indicated by multiple pro-inflammatory cytokines and chemokines including IL-1β, IL-6, TNF-α, CCL2, CXCL1 and CXCL10, and oxidative damage markers 4-hydroxynonenal (4-HNE) and gp91phox and antioxidative proteins SOD2 and GPx1. Meanwhile, stroke-induced BBB disruption, increased MMP-9 levels, neutrophil infiltration, and increased ICAM-1 were significantly attenuated by dBET1 treatment. Post-ischemic dBET1 administration also attenuated ischemia-induced reactive gliosis in microglia and astrocytes. Overall, these findings demonstrate that BRD4 degradation by dBET1 improves acute stroke outcomes, which is associated with reduced neuroinflammation and oxidative stress and preservation of BBB integrity. This study identifies a novel role of BET proteins in the mechanisms resulting in ischemic brain damage, which can be leveraged to develop novel therapies.
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167
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Wicks EE, Ran KR, Kim JE, Xu R, Lee RP, Jackson CM. The Translational Potential of Microglia and Monocyte-Derived Macrophages in Ischemic Stroke. Front Immunol 2022; 13:897022. [PMID: 35795678 PMCID: PMC9251541 DOI: 10.3389/fimmu.2022.897022] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
The immune response to ischemic stroke is an area of study that is at the forefront of stroke research and presents promising new avenues for treatment development. Upon cerebral vessel occlusion, the innate immune system is activated by danger-associated molecular signals from stressed and dying neurons. Microglia, an immune cell population within the central nervous system which phagocytose cell debris and modulate the immune response via cytokine signaling, are the first cell population to become activated. Soon after, monocytes arrive from the peripheral immune system, differentiate into macrophages, and further aid in the immune response. Upon activation, both microglia and monocyte-derived macrophages are capable of polarizing into phenotypes which can either promote or attenuate the inflammatory response. Phenotypes which promote the inflammatory response are hypothesized to increase neuronal damage and impair recovery of neuronal function during the later phases of ischemic stroke. Therefore, modulating neuroimmune cells to adopt an anti-inflammatory response post ischemic stroke is an area of current research interest and potential treatment development. In this review, we outline the biology of microglia and monocyte-derived macrophages, further explain their roles in the acute, subacute, and chronic stages of ischemic stroke, and highlight current treatment development efforts which target these cells in the context of ischemic stroke.
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168
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Cui Y, Zhang NN, Wang D, Meng WH, Chen HS. Modified Citrus Pectin Alleviates Cerebral Ischemia/Reperfusion Injury by Inhibiting NLRP3 Inflammasome Activation via TLR4/NF-ĸB Signaling Pathway in Microglia. J Inflamm Res 2022; 15:3369-3385. [PMID: 35706530 PMCID: PMC9191615 DOI: 10.2147/jir.s366927] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/28/2022] [Indexed: 12/19/2022] Open
Abstract
Background Galectin-3 acts as a mediator of microglial inflammatory response following stroke injury. However, it remains unclear whether inhibiting galectin-3 protects against cerebral ischemia/reperfusion injury. We aimed to investigate the neuroprotective effects of modified citrus pectin (MCP, a galectin-3 blocker) in ischemic stroke and underlying mechanisms. Methods The middle cerebral artery occlusion/reperfusion (MCAO/R) model in C57BL/6J mice and oxygen-glucose deprivation/reoxygenation (ODG/R) model in neuronal (HT-22) and microglial (BV-2) cells were utilized in the following experiments: 1) the neuroprotective effects of MCP with different concentrations were evaluated in vivo and in vitro through measuring neurological deficit scores, brain water content, infarction volume, cell viability, and cell apoptosis; 2) the mechanisms of its neuroprotection were explored in mice and microglial cells through detecting the expression of NLRP3 (NOD-like receptor 3) inflammasome-related proteins by immunofluorescence staining and Western blotting analyses. Results Among the tested concentrations, 800 mg/kg/d MCP in mice and 4 g/L MCP in cells, respectively, showed in vivo and in vitro neuroprotective effects on all the tests, compared with vehicle group. First, MCP significantly reduced neurological deficit scores, brain water content and infarction volume, and alleviated cell injury in the cerebral cortex of MCAO/R model. Second, MCP increased cell viability and reduced cell apoptosis in the neuronal OGD/R model. Third, MCP blocked galectin-3 and decreased the expression of TLR4 (Toll-like receptor 4)/NF-κBp65 (nuclear factor kappa-B)/NLRP3/cleaved-caspase-1/IL-1β (interleukin-1β) in microglial cells. Conclusion This is the first report that MCP exerts neuroprotective effects in ischemic stroke through blocking galectin-3, which may be mediated by inhibiting the activation of NLRP3 inflammasome via TLR4/NF-κB signaling pathway in microglia.
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Affiliation(s)
- Yu Cui
- Department of Neurology, General Hospital of Northern Theater Command, Shenyang, People's Republic of China.,Department of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Nan-Nan Zhang
- Department of Neurology, General Hospital of Northern Theater Command, Shenyang, People's Republic of China
| | - Dan Wang
- Department of Neurology, General Hospital of Northern Theater Command, Shenyang, People's Republic of China
| | - Wei-Hong Meng
- Department of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Hui-Sheng Chen
- Department of Neurology, General Hospital of Northern Theater Command, Shenyang, People's Republic of China
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Lee DH, Lee JY, Hong DY, Lee EC, Park SW, Jo YN, Park YJ, Cho JY, Cho YJ, Chae SH, Lee MR, Oh JS. ROCK and PDE-5 Inhibitors for the Treatment of Dementia: Literature Review and Meta-Analysis. Biomedicines 2022; 10:biomedicines10061348. [PMID: 35740369 PMCID: PMC9219677 DOI: 10.3390/biomedicines10061348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/02/2022] [Accepted: 06/05/2022] [Indexed: 12/14/2022] Open
Abstract
Dementia is a disease in which memory, thought, and behavior-related disorders progress gradually due to brain damage caused by injury or disease. It is mainly caused by Alzheimer’s disease or vascular dementia and several other risk factors, including genetic factors. It is difficult to treat as its incidence continues to increase worldwide. Many studies have been performed concerning the treatment of this condition. Rho-associated kinase (ROCK) and phosphodiesterase-5 (PDE-5) are attracting attention as pharmacological treatments to improve the symptoms. This review discusses how ROCK and PDE-5 affect Alzheimer’s disease, vascular restructuring, and exacerbation of neuroinflammation, and how their inhibition helps improve cognitive function. In addition, the results of the animal behavior analysis experiments utilizing the Morris water maze were compared through meta-analysis to analyze the effects of ROCK inhibitors and PDE-5 inhibitors on cognitive function. According to the selection criteria, 997 publications on ROCK and 1772 publications on PDE-5 were screened, and conclusions were drawn through meta-analysis. Both inhibitors showed good improvement in cognitive function tests, and what is expected of the synergy effect of the two drugs was confirmed in this review.
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Affiliation(s)
- Dong-Hun Lee
- Department of Neurosurgery, College of Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan 31151, Korea; (D.-H.L.); (J.Y.L.); (D.-Y.H.); (E.C.L.); (S.-W.P.)
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Cheonan 31151, Korea
| | - Ji Young Lee
- Department of Neurosurgery, College of Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan 31151, Korea; (D.-H.L.); (J.Y.L.); (D.-Y.H.); (E.C.L.); (S.-W.P.)
| | - Dong-Yong Hong
- Department of Neurosurgery, College of Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan 31151, Korea; (D.-H.L.); (J.Y.L.); (D.-Y.H.); (E.C.L.); (S.-W.P.)
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Cheonan 31151, Korea
| | - Eun Chae Lee
- Department of Neurosurgery, College of Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan 31151, Korea; (D.-H.L.); (J.Y.L.); (D.-Y.H.); (E.C.L.); (S.-W.P.)
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Cheonan 31151, Korea
| | - Sang-Won Park
- Department of Neurosurgery, College of Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan 31151, Korea; (D.-H.L.); (J.Y.L.); (D.-Y.H.); (E.C.L.); (S.-W.P.)
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Cheonan 31151, Korea
| | - Yu Na Jo
- Department of Medicine, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea; (Y.N.J.); (Y.J.P.); (J.Y.C.); (Y.J.C.); (S.H.C.)
| | - Yu Jin Park
- Department of Medicine, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea; (Y.N.J.); (Y.J.P.); (J.Y.C.); (Y.J.C.); (S.H.C.)
| | - Jae Young Cho
- Department of Medicine, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea; (Y.N.J.); (Y.J.P.); (J.Y.C.); (Y.J.C.); (S.H.C.)
| | - Yoo Jin Cho
- Department of Medicine, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea; (Y.N.J.); (Y.J.P.); (J.Y.C.); (Y.J.C.); (S.H.C.)
| | - Su Hyun Chae
- Department of Medicine, College of Medicine, Soonchunhyang University, Cheonan 31151, Korea; (Y.N.J.); (Y.J.P.); (J.Y.C.); (Y.J.C.); (S.H.C.)
| | - Man Ryul Lee
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Cheonan 31151, Korea
- Correspondence: (M.R.L.); (J.S.O.)
| | - Jae Sang Oh
- Department of Neurosurgery, College of Medicine, Soonchunhyang University, Cheonan Hospital, Cheonan 31151, Korea; (D.-H.L.); (J.Y.L.); (D.-Y.H.); (E.C.L.); (S.-W.P.)
- Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Cheonan 31151, Korea
- Correspondence: (M.R.L.); (J.S.O.)
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Rahmani B, Ghashghayi E, Zendehdel M, Baghbanzadeh A, Khodadadi M. Molecular mechanisms highlighting the potential role of COVID-19 in the development of neurodegenerative diseases. Physiol Int 2022; 109:135-162. [DOI: 10.1556/2060.2022.00019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/17/2022] [Accepted: 04/11/2022] [Indexed: 01/08/2023]
Abstract
Abstract
Coronavirus disease 2019 (COVID-19) is a contagious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In addition to the pulmonary manifestations, COVID-19 patients may present a wide range of neurological disorders as extrapulmonary presentations. In this view, several studies have recently documented the worsening of neurological symptoms within COVID-19 morbidity in patients previously diagnosed with neurodegenerative diseases (NDs). Moreover, several cases have also been reported in which the patients presented parkinsonian features after initial COVID-19 symptoms. These data raise a major concern about the possibility of communication between SARS-CoV-2 infection and the initiation and/or worsening of NDs. In this review, we have collected compelling evidence suggesting SARS-CoV-2, as an environmental factor, may be capable of developing NDs. In this respect, the possible links between SARS-CoV-2 infection and molecular pathways related to most NDs and the pathophysiological mechanisms of the NDs such as Alzheimer's disease, vascular dementia, frontotemporal dementia, Parkinson's disease, and amyotrophic lateral sclerosis will be explained.
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Affiliation(s)
- Behrouz Rahmani
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, 14155-6453 Tehran, Iran
| | - Elham Ghashghayi
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, 14155-6453 Tehran, Iran
| | - Morteza Zendehdel
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, 14155-6453 Tehran, Iran
| | - Ali Baghbanzadeh
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, 14155-6453 Tehran, Iran
| | - Mina Khodadadi
- Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, 14155-6453 Tehran, Iran
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Liang Y, Feng Q, Wang Z. Mass Spectrometry Imaging as a New Method: To Reveal the Pathogenesis and the Mechanism of Traditional Medicine in Cerebral Ischemia. Front Pharmacol 2022; 13:887050. [PMID: 35721195 PMCID: PMC9204101 DOI: 10.3389/fphar.2022.887050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/13/2022] [Indexed: 11/22/2022] Open
Abstract
Mass spectrometry imaging (MSI) can describe the spatial distribution of molecules in various complex biological samples, such as metabolites, lipids, peptides and proteins in a comprehensive way, and can provide highly relevant supplementary information when combined with other molecular imaging techniques and chromatography techniques, so it has been used more and more widely in biomedical research. The application of mass spectrometry imaging in neuroscience is developing. It is very advantageous and necessary to use MSI to study various pathophysiological processes involved in brain injury and functional recovery during cerebral ischemia. Therefore, this paper introduces the techniques of mass spectrometry, including the principle of mass spectrometry, the acquisition and preparation of imaging samples, the commonly used ionization techniques, and the optimization of the current applied methodology. Furthermore, the research on the mechanism of cerebral ischemia by mass spectrometry was reviewed, such as phosphatidylcholine involved, dopamine, spatial distribution and level changes of physiological substances such as ATP in the Krebs cycle; The characteristics of mass spectrometry imaging as one of the methods of metabolomics in screening biomarkers related to cerebral ischemia were analyzed the advantages of MSI in revealing drug distribution and the mechanism of traditional drugs were summarized, and the existing problems of MSI were also analyzed and relevant suggestions were put forward.
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Affiliation(s)
- Yan Liang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qiaoqiao Feng
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhang Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Ethnomedicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Zhang Wang,
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Gu HQ, Yang KX, Lin JX, Jing J, Zhao XQ, Wang YL, Liu LP, Meng X, Jiang Y, Li H, Wang YJ, Li ZX. Association between high-sensitivity C-reactive protein, functional disability, and stroke recurrence in patients with acute ischaemic stroke: A mediation analysis. EBioMedicine 2022; 80:104054. [PMID: 35576642 PMCID: PMC9118507 DOI: 10.1016/j.ebiom.2022.104054] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 12/03/2022] Open
Abstract
Background Post-stroke inflammation biomarker high-sensitivity C-reactive protein (hsCRP) increases cerebral infarct size and results in functional disability directly, it also contributes to the formation and maturation of atherosclerotic plaques, which increase the risk of stroke recurrence and results in functional disability indirectly. However, no study has quantified how much functional disability was mediated by stroke recurrence. Methods Patients with acute ischaemic stroke within 7 days and admitted to 169 hospitals in the Third China National Stroke Registry were analyzed. Blood samples were collected within 24 h of admission. Stroke recurrence and functional disability (defined as a modified Rankin scale score ≥ 2) were assessed via face-to-face interviews at three months. Mediation analysis under the counterfactual framework was performed to examine the potential causal chain in which stroke recurrence may mediate the relationship between hsCRP and functional outcome. Sensitivity analyses were performed across different subgroups and on different scales of hsCRP measurement. Findings Of the 7603 analyzed patients (mean [SD] age, 62.3 [11.3] years; 2392 [31.5%] women), the median (interquartile range [IQR]) of NIHSS score was 3.0 (1.0–6.0). The median (IQR) level of hsCRP was 1.73 (0.81–4.38) mg/L. A total of 496 (6.5%) cases of stroke recurrence and 1884 (24.8%) cases of functional disability were observed at the 90-day follow-up. Each SD increase in the concentration of hsCRP was associated with an increased risk of stroke recurrence (adjusted odds ratio [aOR], 1.11; 95% CI, 1.04–1.18) and disability (aOR, 1.14; 95% CI, 1.08–1.20) within 90 days. Of 1884 functionally disabled patients, only 16.0 % (n = 302) of patients experienced stroke recurrence before functional disability. Stroke recurrence during follow-up explained 16.52% (95% CI, 5.79%–27.25%) of the relationship between hsCRP and functional disability. Sensitivity analyses in different subgroups and on different scales of hsCRP measurement showed comparable results. Interpretation Stroke recurrence mediates less than 20% of the association between hsCRP and functional disability at 90 days among patients with acute ischaemic stroke. In addition to typical secondary prevention strategies for preventing stroke recurrence, more attention should be paid to novel anti-inflammatory therapy to improve functional outcomes. Funding Beijing Natural Science Foundation, the National Key R&D Program of China, the National Natural Science Foundation of China, and the Beijing Municipal Science & Technology Commission.
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173
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Pathogenesis of sepsis-associated encephalopathy: more than blood-brain barrier dysfunction. Mol Biol Rep 2022; 49:10091-10099. [PMID: 35639274 DOI: 10.1007/s11033-022-07592-x] [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: 11/05/2021] [Accepted: 05/11/2022] [Indexed: 12/19/2022]
Abstract
Sepsis-associated encephalopathy is a common neurological complication of sepsis and is responsible for higher mortality and poorer long-term outcomes in septic patients. Sepsis-associated encephalopathy symptoms can range from mild delirium to deep coma, which occurs in up to 70% of patients in intensive care units. The pathological changes in the brain associated with sepsis include cerebral ischaemia, cerebral haemorrhage, abscess and progressive multifocal necrotic leukoencephalopathy. Several mechanisms are involved in the pathogenesis of sepsis-associated encephalopathy, such as blood-brain barrier dysfunction, cerebral blood flow impairment, glial cell activation, leukocyte transmigration, and neurotransmitter disturbances. These events are interrelated and influence each other, therefore they do not act as independent factors. This review is focused on new evidence showing the pathological process of sepsis-associated encephalopathy.
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174
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Thrombolysis in stroke patients with elevated inflammatory markers. J Neurol 2022; 269:5405-5419. [PMID: 35622132 PMCID: PMC9468078 DOI: 10.1007/s00415-022-11173-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 05/01/2022] [Accepted: 05/03/2022] [Indexed: 11/07/2022]
Abstract
Objective To investigate the prognostic value of white blood cell count (WBC) on functional outcome, mortality and bleeding risk in stroke patients treated with intravenous thrombolysis (IVT). Methods In this prospective multicenter study from the TRISP registry, we assessed the association between WBC on admission and 3-month poor outcome (modified Rankin Scale 3–6), mortality and occurrence of symptomatic intracranial hemorrhage (sICH; ECASS-II-criteria) in IVT-treated stroke patients. WBC was used as continuous and categorical variable distinguishing leukocytosis (WBC > 10 × 109/l) and leukopenia (WBC < 4 × 109/l). We calculated unadjusted/ adjusted odds ratios with 95% confidence intervals (OR [95% CI]) with logistic regression models. In a subgroup, we analyzed the association of combined leukocytosis and elevated C-reactive protein (CRP > 10 mg/l) on outcomes. Results Of 10,813 IVT-treated patients, 2527 had leukocytosis, 112 leukopenia and 8174 normal WBC. Increasing WBC (by 1 × 109/l) predicted poor outcome (ORadjusted 1.04[1.02–1.06]) but not mortality and sICH. Leukocytosis was independently associated with poor outcome (ORadjusted 1.48[1.29–1.69]) and mortality (ORadjusted 1.60[1.35–1.89]) but not with sICH (ORadjusted 1.17[0.94–1.45]). Leukopenia did not predict any outcome. In a subgroup, combined leukocytosis and elevated CRP had the strongest association with poor outcome (ORadjusted 2.26[1.76–2.91]) and mortality (ORadjusted 2.43[1.86–3.16]) when compared to combined normal WBC and CRP. Conclusion In IVT-treated patients, leukocytosis independently predicted poor functional outcome and death. Bleeding complications after IVT were not independently associated with leukocytosis. Supplementary Information The online version contains supplementary material available at 10.1007/s00415-022-11173-0.
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175
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Maes MHJ, Stoyanov D. False dogmas in mood disorders research: Towards a nomothetic network approach. World J Psychiatry 2022; 12:651-667. [PMID: 35663296 PMCID: PMC9150032 DOI: 10.5498/wjp.v12.i5.651] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 10/07/2021] [Accepted: 04/26/2022] [Indexed: 02/06/2023] Open
Abstract
The current understanding of major depressive disorder (MDD) and bipolar disorder (BD) is plagued by a cacophony of controversies as evidenced by competing schools to understand MDD/BD. The DSM/ICD taxonomies have cemented their status as the gold standard for diagnosing MDD/BD. The aim of this review is to discuss the false dogmas that reign in current MDD/BD research with respect to the new, data-driven, machine learning method to model psychiatric illness, namely nomothetic network psychiatry (NNP). This review discusses many false dogmas including: MDD/BD are mind-brain disorders that are best conceptualized using a bio-psycho-social model or mind-brain interactions; mood disorders due to medical disease are attributable to psychosocial stress or chemical imbalances; DSM/ICD are the gold standards to make the MDD/BD diagnosis; severity of illness should be measured using rating scales; clinical remission should be defined using threshold values on rating scale scores; existing diagnostic BD boundaries are too restrictive; and mood disorder spectra are the rule. In contrast, our NNP models show that MDD/BD are not mind-brain or psycho-social but systemic medical disorders; the DSM/ICD taxonomies are counterproductive; a shared core, namely the reoccurrence of illness (ROI), underpins the intertwined recurrence of depressive and manic episodes and suicidal behaviors; mood disorders should be ROI-defined; ROI mediates the effects of nitro-oxidative stress pathways and early lifetime trauma on the phenome of mood disorders; severity of illness and treatment response should be delineated using the NNP-derived causome, pathway, ROI and integrated phenome scores; and MDD and BD are the same illness.
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Affiliation(s)
- Michael HJ Maes
- Department of Psychiatry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Drozdstoy Stoyanov
- Department of Psychiatry, Medical University Plovdiv, Plovdiv 4000, Bulgaria
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176
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Neurological Manifestations of Myocarditis. Curr Neurol Neurosci Rep 2022; 22:363-374. [PMID: 35588043 PMCID: PMC9117837 DOI: 10.1007/s11910-022-01203-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE OF REVIEW The present review discusses the neurological complications associated with myocarditis of different etiologies. RECENT FINDINGS Myocarditis can be idiopathic or caused by different conditions, including toxins, infections, or inflammatory diseases. Clinical findings are variable and range from mild self-limited shortness of breath or chest pain to hemodynamic instability which may result in cardiogenic shock and death. Several neurologic manifestations can be seen in association with myocarditis. Tissue remodeling, fibrosis, and myocyte dysfunction can result in heart failure and arrhythmias leading to intracardiac thrombus formation and cardioembolism. In addition, peripheral neuropathies, status epilepticus, or myasthenia gravis have been reported in association with specific types of myocarditis. Multiple studies suggest the increasing risk of neurologic complications in patients with myocarditis. Neurologists should maintain a high suspicion of myocarditis in cases presenting with both cardiovascular and neurological dysfunction without a clear etiology.
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177
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Li F, Kang X, Xin W, Li X. The Emerging Role of Extracellular Vesicle Derived From Neurons/Neurogliocytes in Central Nervous System Diseases: Novel Insights Into Ischemic Stroke. Front Pharmacol 2022; 13:890698. [PMID: 35559228 PMCID: PMC9086165 DOI: 10.3389/fphar.2022.890698] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 04/07/2022] [Indexed: 01/05/2023] Open
Abstract
Neurons and neurogliocytes (oligodendrocytes, astrocytes, and microglia) are essential for maintaining homeostasis of the microenvironment in the central nervous system (CNS). These cells have been shown to support cell-cell communication via multiple mechanisms, most recently by the release of extracellular vesicles (EVs). Since EVs carry a variety of cargoes of nucleic acids, lipids, and proteins and mediate intercellular communication, they have been the hotspot of diagnosis and treatment. The mechanisms underlying CNS disorders include angiogenesis, autophagy, apoptosis, cell death, and inflammation, and cell-EVs have been revealed to be involved in these pathological processes. Ischemic stroke is one of the most common causes of death and disability worldwide. It results in serious neurological and physical dysfunction and even leads to heavy economic and social burdens. Although a large number of researchers have reported that EVs derived from these cells play a vital role in regulating multiple pathological mechanisms in ischemic stroke, the specific interactional relationships and mechanisms between specific cell-EVs and stroke treatment have not been clearly described. This review aims to summarize the therapeutic effects and mechanisms of action of specific cell-EVs on ischemia. Additionally, this study emphasizes that these EVs are involved in stroke treatment by inhibiting and activating various signaling pathways such as ncRNAs, TGF-β1, and NF-κB.
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Affiliation(s)
- Fan Li
- Department of Neurosurgery, Heji Hospital Affiliated Changzhi Medical College, Shanxi, China
| | - Xiaokui Kang
- Department of Neurosurgery, Liaocheng People's Hospital, Liaocheng, China
| | - Wenqiang Xin
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Xin Li
- Department of Neurosurgery, Liaocheng People's Hospital, Liaocheng, China
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178
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Rationale for the Use of Cord Blood in Hypoxic-Ischaemic Encephalopathy. Stem Cells Int 2022; 2022:9125460. [PMID: 35599846 PMCID: PMC9117076 DOI: 10.1155/2022/9125460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 02/16/2022] [Accepted: 04/22/2022] [Indexed: 11/18/2022] Open
Abstract
Hypoxic-ischaemic encephalopathy (HIE) is a severe complication of asphyxia at birth. Therapeutic hypothermia, the standard method for HIE prevention, is effective in only 50% of the cases. As the understanding of the immunological basis of these changes increases, experiments have begun with the use of cord blood (CB) because of its neuroprotective properties. Mechanisms for the neuroprotective effects of CB stem cells include antiapoptotic and anti-inflammatory actions, stimulation of angiogenesis, production of trophic factors, and mitochondrial donation. In several animal models of HIE, CB decreased oxidative stress, cell death markers, CD4+ T cell infiltration, and microglial activation; restored normal brain metabolic activity; promoted neurogenesis; improved myelination; and increased the proportion of mature oligodendrocytes, neuron numbers in the motor cortex and somatosensory cortex, and brain weight. These observations translate into motor strength, limb function, gait, and cognitive function and behaviour. In humans, the efficacy and safety of CB administration were reported in a few early clinical studies which confirmed the feasibility and safety of this intervention for up to 10 years. The results of these studies showed an improvement in the developmental outcomes over hypothermia. Two phase-2 clinical studies are ongoing under the United States regulations, namely one controlled study and one blinded study.
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179
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Ouro A, Correa-Paz C, Maqueda E, Custodia A, Aramburu-Núñez M, Romaus-Sanjurjo D, Posado-Fernández A, Candamo-Lourido M, Alonso-Alonso ML, Hervella P, Iglesias-Rey R, Castillo J, Campos F, Sobrino T. Involvement of Ceramide Metabolism in Cerebral Ischemia. Front Mol Biosci 2022; 9:864618. [PMID: 35531465 PMCID: PMC9067562 DOI: 10.3389/fmolb.2022.864618] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/11/2022] [Indexed: 12/12/2022] Open
Abstract
Ischemic stroke, caused by the interruption of blood flow to the brain and subsequent neuronal death, represents one of the main causes of disability in worldwide. Although reperfusion therapies have shown efficacy in a limited number of patients with acute ischemic stroke, neuroprotective drugs and recovery strategies have been widely assessed, but none of them have been successful in clinical practice. Therefore, the search for new therapeutic approaches is still necessary. Sphingolipids consist of a family of lipidic molecules with both structural and cell signaling functions. Regulation of sphingolipid metabolism is crucial for cell fate and homeostasis in the body. Different works have emphasized the implication of its metabolism in different pathologies, such as diabetes, cancer, neurodegeneration, or atherosclerosis. Other studies have shown its implication in the risk of suffering a stroke and its progression. This review will highlight the implications of sphingolipid metabolism enzymes in acute ischemic stroke.
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Affiliation(s)
- Alberto Ouro
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Clara Correa-Paz
- Translational Stroke Laboratory Group (TREAT), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Elena Maqueda
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Antía Custodia
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Marta Aramburu-Núñez
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Daniel Romaus-Sanjurjo
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Adrián Posado-Fernández
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - María Candamo-Lourido
- Translational Stroke Laboratory Group (TREAT), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Maria Luz Alonso-Alonso
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Pablo Hervella
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Ramón Iglesias-Rey
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - José Castillo
- Neuroimaging and Biotechnology Laboratory (NOBEL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Francisco Campos
- Translational Stroke Laboratory Group (TREAT), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Tomás Sobrino
- NeuroAging Group (NEURAL), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
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180
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Wang L, Ren W, Wu Q, Liu T, Wei Y, Ding J, Zhou C, Xu H, Yang S. NLRP3 Inflammasome Activation: A Therapeutic Target for Cerebral Ischemia–Reperfusion Injury. Front Mol Neurosci 2022; 15:847440. [PMID: 35600078 PMCID: PMC9122020 DOI: 10.3389/fnmol.2022.847440] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 04/06/2022] [Indexed: 12/16/2022] Open
Abstract
Millions of patients are suffering from ischemic stroke, it is urgent to figure out the pathogenesis of cerebral ischemia–reperfusion (I/R) injury in order to find an effective cure. After I/R injury, pro-inflammatory cytokines especially interleukin-1β (IL-1β) upregulates in ischemic brain cells, such as microglia and neuron. To ameliorate the inflammation after cerebral I/R injury, nucleotide-binding oligomerization domain (NOD), leucine-rich repeat (LRR), and pyrin domain-containing protein 3 (NLRP3) inflammasome is well-investigated. NLRP3 inflammasomes are complicated protein complexes that are activated by endogenous and exogenous danger signals to participate in the inflammatory response. The assembly and activation of the NLRP3 inflammasome lead to the caspase-1-dependent release of pro-inflammatory cytokines, such as interleukin (IL)-1β and IL-18. Furthermore, pyroptosis is a pro-inflammatory cell death that occurs in a dependent manner on NLRP3 inflammasomes after cerebral I/R injury. In this review, we summarized the assembly and activation of NLRP3 inflammasome; moreover, we also concluded the pivotal role of NLRP3 inflammasome and inhibitors, targeting the NLRP3 inflammasome in cerebral I/R injury.
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Affiliation(s)
- Lixia Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Ren
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Qingjuan Wu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tianzhu Liu
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Ying Wei
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiru Ding
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chen Zhou
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Houping Xu
- Preventive Treatment Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
- Houping Xu
| | - Sijin Yang
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
- *Correspondence: Sijin Yang
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181
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Yan Y, Liu Y, Yang Y, Ding Y, Sun X. Carnosol suppresses microglia cell inflammation and apoptosis through PI3K/AKT/mTOR signaling pathway. Immunopharmacol Immunotoxicol 2022; 44:656-662. [PMID: 35521965 DOI: 10.1080/08923973.2022.2074448] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Ischemic stroke is the most common type of acute cerebrovascular disease. Carnosol is a polyphenol compound extracted from rosemary. This study aimed to explore the effects of carnosol on the oxygen-glucose deprivation (OGD) treated BV2 microglia cells. MTT and EdU assays were used to detect the cell viability and proliferation. Flow cytometry was conducted to measure the apoptosis rates. Additionally, the protein expression was determined by western blot. The inflammatory factors and antioxidant indexes were detected by corresponding kits. Carnosol promoted the proliferation and inhibited the apoptosis of the OGD treated BV2 cells. What's more, the protein expressions of PCNA and Bcl-2 were up-regulated, the Bax expression was down-regulated after carnosol treatment. In addition, carnosol decreased the levels of MDA, LPO, TNF-α, IL-1β and IL-6, and increased the levels of GSH, SOD, IL-4 and IL-10 in the OGD treated BV2 cells. Furthermore, the PI3K/AKT/mTOR signaling pathway was activated after carnosol treatment and inhibition of the PI3K/AKT/mTOR signaling pathway reversed the carnosol effects. Carnosol promotes the proliferation, inhibits the apoptosis, relieves the oxidative damage and inflammation of OGD treated cells through regulating the PI3K/AKT/mTOR signaling pathway.
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Affiliation(s)
- Yuhan Yan
- Department of Geriatrics, General Hospital of Eastern Theater Command, Nanjing, Jiangsu 210002, China
| | - Yu Liu
- Department of Geriatrics, General Hospital of Eastern Theater Command, Nanjing, Jiangsu 210002, China
| | - Yujiao Yang
- Department of Geriatrics, The First People's Hospital of Changzhou, Changzhou, Jiangsu 213000, China
| | - Yi Ding
- Department of Geriatrics, The First People's Hospital of Changzhou, Changzhou, Jiangsu 213000, China
| | - Xin Sun
- Department of Geriatrics, The First People's Hospital of Changzhou, Changzhou, Jiangsu 213000, China
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182
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Zemgulyte G, Umbrasas D, Cizas P, Jankeviciute S, Pampuscenko K, Grigaleviciute R, Rastenyte D, Borutaite V. Imeglimin Is Neuroprotective Against Ischemic Brain Injury in Rats-a Study Evaluating Neuroinflammation and Mitochondrial Functions. Mol Neurobiol 2022; 59:2977-2991. [PMID: 35257284 DOI: 10.1007/s12035-022-02765-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 02/01/2022] [Indexed: 12/29/2022]
Abstract
Imeglimin is a novel oral antidiabetic drug modulating mitochondrial functions. However, neuroprotective effects of this drug have not been investigated. The aim of this study was to investigate effects of imeglimin against ischemia-induced brain damage and neurological deficits and whether it acted via inhibition of mitochondrial permeability transition pore (mPTP) and suppression of microglial activation. Ischemia in rats was induced by permanent middle cerebral artery occlusion (pMCAO) for 48 h. Imeglimin (135 μg/kg/day) was injected intraperitoneally immediately after pMCAO and repeated after 24 h. Immunohistochemical staining was used to evaluate total numbers of neurons, astrocytes, and microglia as well as interleukin-10 (IL-10) producing cells in brain slices. Respiration of isolated brain mitochondria was assessed using high-resolution respirometry. Assessment of ionomycin-induced mPTP opening in intact cultured primary rat neuronal, astrocytic, and microglial cells was performed using fluorescence microscopy. Treatment with imeglimin significantly decreased infarct size, brain edema, and neurological deficits after pMCAO. Moreover, imeglimin protected against pMCAO-induced neuronal loss as well as microglial proliferation and activation, and increased the number of astrocytes and the number of cells producing anti-inflammatory cytokine IL-10 in the ischemic hemisphere. Imeglimin in vitro acutely prevented mPTP opening in cultured neurons and astrocytes but not in microglial cells; however, treatment with imeglimin did not prevent ischemia-induced mitochondrial respiratory dysfunction after pMCAO. This study demonstrates that post-stroke treatment with imeglimin exerts neuroprotective effects by reducing infarct size and neuronal loss possibly via the resolution of neuroinflammation and partly via inhibition of mPTP opening in neurons and astrocytes.
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Affiliation(s)
- Gintare Zemgulyte
- Department of Neurology, Medical Academy, Lithuanian University of Health Sciences, A. Mickeviciaus str. 9, LT-44307, Kaunas, Lithuania.
| | - Danielius Umbrasas
- Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50162, Kaunas, Lithuania
| | - Paulius Cizas
- Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50162, Kaunas, Lithuania
| | - Silvija Jankeviciute
- Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50162, Kaunas, Lithuania
| | - Katryna Pampuscenko
- Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50162, Kaunas, Lithuania
| | - Ramune Grigaleviciute
- Biological research center, Lithuanian University of Health Sciences, Tilzes str. 18, LT-47181, Kaunas, Lithuania
| | - Daiva Rastenyte
- Department of Neurology, Medical Academy, Lithuanian University of Health Sciences, A. Mickeviciaus str. 9, LT-44307, Kaunas, Lithuania
| | - Vilmante Borutaite
- Neuroscience Institute, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50162, Kaunas, Lithuania
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183
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Zhou X, Zhang YN, Li FF, Zhang Z, Cui LY, He HY, Yan X, He WB, Sun HS, Feng ZP, Chu SF, Chen NH. Neuronal chemokine-like-factor 1 (CKLF1) up-regulation promotes M1 polarization of microglia in rat brain after stroke. Acta Pharmacol Sin 2022; 43:1217-1230. [PMID: 34385606 PMCID: PMC9061752 DOI: 10.1038/s41401-021-00746-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 07/16/2021] [Indexed: 11/10/2022] Open
Abstract
The phenotypic transformation of microglia in the ischemic penumbra determines the outcomes of ischemic stroke. Our previous study has shown that chemokine-like-factor 1 (CKLF1) promotes M1-type polarization of microglia. In this study, we investigated the cellular source and transcriptional regulation of CKLF1, as well as the biological function of CKLF1 in ischemic penumbra of rat brain. We showed that CKLF1 was significantly up-regulated in cultured rat cortical neurons subjected to oxygen-glucose deprivation/reoxygenation (ODG/R) injury, but not in cultured rat microglia, astrocytes and oligodendrocytes. In a rat model of middle cerebral artery occlusion, we found that CKLF1 was up-regulated and co-localized with neurons in ischemic penumbra. Furthermore, the up-regulated CKLF1 was accompanied by the enhanced nuclear accumulation of NF-κB. The transcriptional activity of CKLF1 was improved by overexpression of NF-κB in HEK293T cells, whereas application of NF-κB inhibitor Bay 11-7082 (1 μM) abolished it, caused by OGD/R. By using chromatin-immunoprecipitation (ChIP) assay we demonstrated that NF-κB directly bound to the promoter of CKLF1 (at a binding site located at -249 bp to -239 bp of CKLF1 promoter region), and regulated the transcription of human CKLF1. Moreover, neuronal conditional medium collected after OGD/R injury or CKLF1-C27 (a peptide obtained from secreted CKLF1) induced the M1-type polarization of microglia, whereas the CKLF1-neutralizing antibody (αCKLF1) or NF-κB inhibitor Bay 11-7082 abolished the M1-type polarization of microglia. Specific knockout of neuronal CKLF1 in ischemic penumbra attenuated neuronal impairments and M1-type polarization of microglia caused by ischemic/reperfusion injury, evidenced by inhibited levels of M1 marker CD16/32 and increased expression of M2 marker CD206. Application of CKLF1-C27 (200 nM) promoted the phosphorylation of p38 and JNK in microglia, whereas specific depletion of neuronal CKLF1 in ischemic penumbra abolished ischemic/reperfusion-induced p38 and JNK phosphorylation. In summary, CKLF1 up-regulation in neurons regulated by NF-κB is one of the crucial mechanisms to promote M1-type polarization of microglia in ischemic penumbra.
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Affiliation(s)
- Xin Zhou
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China
| | - Ya-ni Zhang
- grid.411866.c0000 0000 8848 7685Institute of Clinical Pharmacology & Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405 China
| | - Fang-fang Li
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China
| | - Zhao Zhang
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China
| | - Li-yuan Cui
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China
| | - Hong-yuan He
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China ,grid.33763.320000 0004 1761 2484Tianjin University of Tradition Chinese Medicine, Tianjin, 301617 China
| | - Xu Yan
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China
| | - Wen-bin He
- Shanxi Key Laboratory of Chinese Medicine Encephalopathy, Shanxi University of Chinese Medicine, Jinzhong 030619, China
| | - Hong-shuo Sun
- grid.17063.330000 0001 2157 2938Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON Canada
| | - Zhong-ping Feng
- grid.17063.330000 0001 2157 2938Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, ON Canada
| | - Shi-feng Chu
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China
| | - Nai-hong Chen
- grid.506261.60000 0001 0706 7839State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica and Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050 China ,grid.411866.c0000 0000 8848 7685Institute of Clinical Pharmacology & Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510405 China ,grid.33763.320000 0004 1761 2484Tianjin University of Tradition Chinese Medicine, Tianjin, 301617 China ,Shanxi Key Laboratory of Chinese Medicine Encephalopathy, Shanxi University of Chinese Medicine, Jinzhong 030619, China
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Effectiveness of Combined Thrombolysis and Mild Hypothermia Therapy in Acute Cerebral Infarction: A Meta-Analysis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:4044826. [PMID: 35469165 PMCID: PMC9034919 DOI: 10.1155/2022/4044826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 03/05/2022] [Accepted: 03/18/2022] [Indexed: 11/18/2022]
Abstract
Objective To evaluate the effectiveness and safety of thrombolytic therapy combined with mild hypothermia in patients with acute cerebral infarction (ACI), based on a meta-analysis of randomized controlled trials (RCTs). Methods PubMed, EMBASE, Cochrane Library, and Chinese National Knowledge Infrastructure Database of Controlled Trials were systematically screened for randomized controlled trials (RCTs) of thrombolytic therapy combined with mild hypothermia in treating ACI from inception to January 2021. Participation and outcomes among intervention enrollees are as follows: P, participants (patients in ACI); I, interventions (thrombolysis in combination with mild hypothermia therapy); C, controls (thrombolysis merely); O, outcomes (main outcomes are the change of NIHSS, glutathione peroxidase, superoxide dismutase, malondialdehyde, inflammatory factor interleukin-1β, tumor necrosis factor-α, and adverse reaction). Following data extraction and quality assessment, a meta-analysis was performed using RevMan 5.3 software. Results A total of 26 RCTs involving 2071 patients were included. Compared to thrombolysis alone, thrombolytic therapy combined with mild hypothermia leads to better therapeutic efficacy [RR = 1.23, 95% CI (1.16, 1.31)], NIHSS [MD = -2.02, 95% CI (-2.55, -1.49)], glutathione peroxidase [MD = 8.71, 95% CI (5.55, 11.87)], superoxide dismutase [MD = 16.52, 95% CI (12.31, 19.74)], malondialdehyde [MD = -1.86, 95% CI (-1.98, -1.75)], interleukin-1β [MD = -3.48, 95% CI (-4.88, -2.08)], tumor necrosis factor-α [MD = -0.46, 95% CI (-3.39, 2.48)], and adverse reaction [RR = 0.87, 95% CI (0.63, 1.20)]. Conclusions Thrombolytic therapy combined with mild hypothermia demonstrates a beneficial role in reducing brain nerve function impairment and inflammatory reactions in ACI subjects analysed in this meta-analysis.
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Kong L, Li W, Chang E, Wang W, Shen N, Xu X, Wang X, Zhang Y, Sun W, Hu W, Xu P, Liu X. mtDNA-STING Axis Mediates Microglial Polarization via IRF3/NF-κB Signaling After Ischemic Stroke. Front Immunol 2022; 13:860977. [PMID: 35450066 PMCID: PMC9017276 DOI: 10.3389/fimmu.2022.860977] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/16/2022] [Indexed: 12/31/2022] Open
Abstract
Neuroinflammation is initiated in response to ischemic stroke, and is usually characterized by microglial activation and polarization. Stimulator of interferon genes (STING) has been shown to play a critical role in anti-tumor immunity and inflammatory diseases. Nevertheless, the effect and underlying mechanisms of STING on microglial polarization after ischemic stroke remain unclarified. In this study, acute ischemic stroke was simulated using a model of middle cerebral artery occlusion (MCAO) at adult male C57BL/6 mice in vivo and the BV2 microglia oxygen-glucose deprivation/reperfusion (OGD/R) model in vitro. The specific STING inhibitor C-176 was administered intraperitoneally at 30min after MCAO. We found that the expression of microglial STING was increased following MCAO and OGD/R. Pharmacologic inhibition of STING with C-176 reduced the ischemia/reperfusion (I/R)-induced brain infarction, edema and neuronal injury. Moreover, blockade of STING improved neurological performance and cognitive function and attenuated neuronal degeneration in the hippocampus after MCAO. Mechanistically, both in vivo and in vitro, we delineated that STING could promote the polarization of microglia towards the M1 phenotype and restrain M2 microglia polarization via downstream pathways, including interferon regulatory factor 3 (IRF3) and nuclear factor-κB (NF-κB). In addition, mitochondrial DNA (mtDNA), which is released to microglial cytoplasm induced by I/R injury, could facilitate microglia towards M1 modality through STING signaling pathway. Treatment with C-176 abolished the detrimental effects of mtDNA on stroke outcomes. Taken together, these findings suggest that STING, activated by mtDNA, could polarize microglia to the M1 phenotype following MCAO. Inhibition of STING may serve as a potential therapeutic strategy to mitigate neuroinflammation after ischemic stroke.
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Affiliation(s)
- Lingqi Kong
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wenyu Li
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - E Chang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wuxuan Wang
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Nan Shen
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Xiang Xu
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Xinyue Wang
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yan Zhang
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wen Sun
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wei Hu
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Pengfei Xu
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Xinfeng Liu
- Stroke Center and Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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Taha A, Bobi J, Dammers R, Dijkhuizen RM, Dreyer AY, van Es ACGM, Ferrara F, Gounis MJ, Nitzsche B, Platt S, Stoffel MH, Volovici V, Del Zoppo GJ, Duncker DJ, Dippel DWJ, Boltze J, van Beusekom HMM. Comparison of Large Animal Models for Acute Ischemic Stroke: Which Model to Use? Stroke 2022; 53:1411-1422. [PMID: 35164533 PMCID: PMC10962757 DOI: 10.1161/strokeaha.121.036050] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Translation of acute ischemic stroke research to the clinical setting remains limited over the last few decades with only one drug, recombinant tissue-type plasminogen activator, successfully completing the path from experimental study to clinical practice. To improve the selection of experimental treatments before testing in clinical studies, the use of large gyrencephalic animal models of acute ischemic stroke has been recommended. Currently, these models include, among others, dogs, swine, sheep, and nonhuman primates that closely emulate aspects of the human setting of brain ischemia and reperfusion. Species-specific characteristics, such as the cerebrovascular architecture or pathophysiology of thrombotic/ischemic processes, significantly influence the suitability of a model to address specific research questions. In this article, we review key characteristics of the main large animal models used in translational studies of acute ischemic stroke, regarding (1) anatomy and physiology of the cerebral vasculature, including brain morphology, coagulation characteristics, and immune function; (2) ischemic stroke modeling, including vessel occlusion approaches, reproducibility of infarct size, procedural complications, and functional outcome assessment; and (3) implementation aspects, including ethics, logistics, and costs. This review specifically aims to facilitate the selection of the appropriate large animal model for studies on acute ischemic stroke, based on specific research questions and large animal model characteristics.
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Affiliation(s)
- Aladdin Taha
- Division of Experimental Cardiology, Department of Cardiology (A.T., J.B., D.J.D., H.M.M.v.B.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
- Department of Neurology, Stroke Center (A.T., D.W.J.D.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Joaquim Bobi
- Division of Experimental Cardiology, Department of Cardiology (A.T., J.B., D.J.D., H.M.M.v.B.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Ruben Dammers
- Department of Neurosurgery, Stroke Center (R.D., V.V.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Rick M Dijkhuizen
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht, Utrecht University, the Netherlands (R.M.D.)
| | - Antje Y Dreyer
- Max Planck Institute for Infection Biology, Campus Charité Mitte, Berlin, Germany (A.Y.D.)
| | - Adriaan C G M van Es
- Department of Radiology, Leiden University Medical Center, the Netherlands (A.C.G.M.v.E.)
| | - Fabienne Ferrara
- Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany (F.F.)
| | - Matthew J Gounis
- Department of Radiology, New England Center for Stroke Research, University of Massachusetts Medical School, Worcester (M.J.G.)
| | - Björn Nitzsche
- Institute of Anatomy, Faculty of Veterinary Medicine (B.N.), University of Leipzig, Germany
- Department of Nuclear Medicine (B.N.), University of Leipzig, Germany
| | - Simon Platt
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens (S.P.)
| | - Michael H Stoffel
- Division of Veterinary Anatomy, Vetsuisse Faculty, University of Bern, Switzerland (M.H.S.)
| | - Victor Volovici
- Department of Neurosurgery, Stroke Center (R.D., V.V.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Gregory J Del Zoppo
- Division of Hematology (G.J.d.Z.), University of Washington School of Medicine, Seattle
- Department of Medicine (G.J.d.Z.), University of Washington School of Medicine, Seattle
- Department of Neurology (G.J.d.Z.), University of Washington School of Medicine, Seattle
| | - Dirk J Duncker
- Division of Experimental Cardiology, Department of Cardiology (A.T., J.B., D.J.D., H.M.M.v.B.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Diederik W J Dippel
- Department of Neurology, Stroke Center (A.T., D.W.J.D.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Johannes Boltze
- School of Life Sciences, Faculty of Science, University of Warwick, Coventry, United Kingdom (J.B.)
| | - Heleen M M van Beusekom
- Division of Experimental Cardiology, Department of Cardiology (A.T., J.B., D.J.D., H.M.M.v.B.), Erasmus MC University Medical Center, Rotterdam, the Netherlands
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187
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Pu Z, Bao X, Xia S, Shao P, Xu Y. Serpine1 Regulates Peripheral Neutrophil Recruitment and Acts as Potential Target in Ischemic Stroke. J Inflamm Res 2022; 15:2649-2663. [PMID: 35494316 PMCID: PMC9049872 DOI: 10.2147/jir.s361072] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 04/07/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Peripheral neutrophil infiltration can exacerbate ischemia–reperfusion injury. We focused on the relationship between various peripheral immune cells and cerebral ischemia–reperfusion (I/R) injury. Methods In this study, we investigated the effects of dauricine on neuronal injury induced by ischemia–reperfusion and peripheral immune cells after ischemic stroke in mouse model, and we explored the undefined mechanisms of regulating peripheral immune cells through RNA sequencing and various biochemical verification in vitro and in vivo. Results We found that dauricine improved the neurological deficits of I/R injury, reduced the infarct volume, and improved the neurological scores. Furthermore, dauricine reduced the infiltration of neutrophils into the brain after MCAO-R and increased peripheral neutrophils but unchanged the permeability of the endotheliocyte Transwell system in an in vitro blood-brain barrier (BBB) model. RNA sequencing showed that chemotaxis factors, such as CXCL3, CXCL11, CCL20, CCL22, IL12a, IL23a, and serpine1, might play a crucial role. Overexpression of serpine1 reversed LPS-induced migration of neutrophils. Dauricine can directly bind with serpine1 in ligand–receptor docking performed with the Autodock and analyzed with PyMOL. Conclusion We identified chemotaxis factor serpine1 played a crucial role in peripheral neutrophil infiltration, which may contribute to reduce the neuronal injury induced by ischemia–reperfusion. These findings reveal that serpine1 may act as a potential treatment target in the acute stage of ischemic stroke.
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Affiliation(s)
- Zhijun Pu
- Department of Neurology, Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Institute of Brain Sciences, Nanjing University, Nanjing, Jiangsu, 210093, People’s Republic of China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, Jiangsu, 210008, People’s Republic of China
- Nanjing Neurology Clinic Medical Center, Nanjing, Jiangsu, 210008, People’s Republic of China
| | - Xinyu Bao
- Department of Neurology, Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Institute of Brain Sciences, Nanjing University, Nanjing, Jiangsu, 210093, People’s Republic of China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, Jiangsu, 210008, People’s Republic of China
- Nanjing Neurology Clinic Medical Center, Nanjing, Jiangsu, 210008, People’s Republic of China
| | - Shengnan Xia
- Department of Neurology, Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Institute of Brain Sciences, Nanjing University, Nanjing, Jiangsu, 210093, People’s Republic of China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, Jiangsu, 210008, People’s Republic of China
- Nanjing Neurology Clinic Medical Center, Nanjing, Jiangsu, 210008, People’s Republic of China
| | - Pengfei Shao
- Department of Neurology, Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Institute of Brain Sciences, Nanjing University, Nanjing, Jiangsu, 210093, People’s Republic of China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, Jiangsu, 210008, People’s Republic of China
- Nanjing Neurology Clinic Medical Center, Nanjing, Jiangsu, 210008, People’s Republic of China
| | - Yun Xu
- Department of Neurology, Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Institute of Brain Sciences, Nanjing University, Nanjing, Jiangsu, 210093, People’s Republic of China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu, 210008, People’s Republic of China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, Jiangsu, 210008, People’s Republic of China
- Nanjing Neurology Clinic Medical Center, Nanjing, Jiangsu, 210008, People’s Republic of China
- Correspondence: Yun Xu, Email
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Re-directing nanomedicines to the spleen: A potential technology for peripheral immunomodulation. J Control Release 2022; 350:60-79. [DOI: 10.1016/j.jconrel.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 04/04/2022] [Accepted: 04/05/2022] [Indexed: 11/23/2022]
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189
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Association of Platelet-to-Lymphocyte Ratio with Stroke-Associated Pneumonia in Acute Ischemic Stroke. JOURNAL OF HEALTHCARE ENGINEERING 2022; 2022:1033332. [PMID: 35340256 PMCID: PMC8956427 DOI: 10.1155/2022/1033332] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/19/2022] [Accepted: 02/21/2022] [Indexed: 12/25/2022]
Abstract
A common consequence of acute ischemic stroke (AIS), stroke-associated pneumonia (SAP), might result in a poor prognosis after stroke. Based on the critical position of inflammation in SAP, this study aimed to explore the correlation between platelet-to-lymphocyte ratio (PLR) and the occurrence of SAP. We included 295 patients with acute ischemic stroke, 40 with SAP, and 255 without SAP. The area under the receiver operating characteristic curve was used to determine the diagnostic value of SAP risk factors using binary logistic regression analysis. The comparison between the two groups showed that age, the baseline National Institutes of Health Stroke Scale (NIHSS) score, and the proportion of dysphagia, atrial fibrillation, and total anterior circulation infarct were higher, and the proportion of lacunar circulation infarct was lower in the SAP group (P < 0.001). In terms of laboratory data, the SAP group had considerably greater neutrophil counts and PLR, while the non-SAP group (P < 0.001) had significantly lower lymphocyte counts and triglycerides. Binary logistic regression analysis revealed that older age (aOR = 1.062, 95% CI: 1.023–1.102, P = 0.002), atrial fibrillation (aOR = 3.585, 95% CI: 1.605–8.007, P = 0.019), and PLR (aOR = 1.003, 95% CI: 1.001–1.006, P = 0.020) were independent risk factors associated with SAP after adjusting for potential confounders. The sensitivity and specificity of PLR with a cutoff value of 152.22 (AUC: 0.663, 95% CI: 0.606–0.717, P = 0.0006) were 57.5% and 70.6%, respectively. This study showed that high PLR is an associated factor for SAP in AIS patients. Increased systemic inflammation is linked to SAP in ischemic stroke. Inflammatory biomarkers that are easily accessible may aid in the diagnosis of high-risk SAP patients.
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190
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Vanillin attenuates proinflammatory factors in a tMCAO mouse model via inhibition of TLR4/NF-kB signaling pathway. Neuroscience 2022; 491:65-74. [PMID: 35276304 DOI: 10.1016/j.neuroscience.2022.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 02/06/2023]
Abstract
Vanillin has been reported to reduce hippocampal neuronal death in rat models of global cerebral ischemia. However, the immunoregulatory mechanism of vanillin in ischemic stroke is still unclear. To investigate the role of vanillin in a mouse model of ischemic stroke, we administered vanillin to mice after transient middle cerebral artery occlusion (tMCAO) by tail vein injection. Vanillin reduced infarct volume and improved motor function in mice after ischemia and reperfusion. IL-1β and TNF-α were decreased in ischemic brain tissue of tMCAO mice after vanillin treatment compared with saline treatment. Similar effects were observed using the in vitro LPS-stimulated microglia cell model. Moreover, the reduced expression of proinflammatory cytokines in the vanillin group was related to TLR4/NF-κB signaling. Taken together, the findings suggest that vanillin decreased microglial activation by inhibiting the TLR4 /NF-κB signaling pathway, which reduced expression of proinflammatory cytokines IL-1β and TNF-α, and finally reduced the infarct volume and improved motor function in tMCAO mice.
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191
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Wan Y, Gao W, Zhou K, Liu X, Jiang W, Xue R, Wu W. Role of IGF-1 in neuroinflammation and cognition deficits induced by sleep deprivation. Neurosci Lett 2022; 776:136575. [PMID: 35276231 DOI: 10.1016/j.neulet.2022.136575] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 12/25/2022]
Abstract
Sleep deprivation negatively influences cognition, however, the regulatory mechanisms to counteract this effect have not been identified. IGF-1 has been shown to be anti-inflammatory and neuroprotective in CNS injury models. In this study, we determined the impact of IGF-1 on brain injury and inflammation while modeling sleep deprivation. We found that IGF-1 was downregulated in human peripheral blood and in mice subjected to sleep deprivation for 5 days, with reduced activation of the downstream PI3K/AKT/GSK-3β pathway in mice brains. In addition, we found reduced levels of the anti-apoptosis enzyme Bcl-2 and increased levels of pro-apoptosis enzyme Caspase-9 expression, together with increased pro-inflammatory factors. The administration of IGF-1 after sleep deprivation induced activation of the PI3K/AKT/GSK-3β pathway, reversed changes in Bcl-2, Caspase-9, and pro-inflammatory factors, and alleviated cognitive impairment. Notably, IGF-1 also induced activation of the PI3K/AKT/GSK-3β pathway, and displayed anti-apoptosis and anti-inflammatory properties under normal sleep conditions,while IGF-1 did not improve the cognition under normal sleep conditions. These results suggest that the IGF-1/PI3K/AKT/GSK-3β pathway is involved in the regulation of cognitive function after sleep deprivation through modulation of apoptosis and inflammatory response. IGF-1 could be a viable therapeutic target, though further investigation is required to better understand its role in sleep deprivation.
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Affiliation(s)
- Yahui Wan
- Departments of Neurology, Tianjin Medical University General Hospital Airport Hospital, Tianjin 300308, China.
| | - Wei Gao
- Departments of Neurology, Beijing Pinggu District Hospital, Beijing 101200, China
| | - Kaili Zhou
- Departments of Neurology, Tianjin Medical University General Hospital Airport Hospital, Tianjin 300308, China
| | - Xuan Liu
- Departments of Neurology, Tianjin Medical University General Hospital Airport Hospital, Tianjin 300308, China
| | - Wei Jiang
- Departments of Neurology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Rong Xue
- Departments of Neurology, Tianjin Medical University General Hospital, Tianjin 300052, China.
| | - Wei Wu
- Departments of Neurology, Tianjin Medical University General Hospital, Tianjin 300052, China.
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192
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Villa-González M, Martín-López G, Pérez-Álvarez MJ. Dysregulation of mTOR Signaling after Brain Ischemia. Int J Mol Sci 2022; 23:ijms23052814. [PMID: 35269956 PMCID: PMC8911477 DOI: 10.3390/ijms23052814] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 02/04/2023] Open
Abstract
In this review, we provide recent data on the role of mTOR kinase in the brain under physiological conditions and after damage, with a particular focus on cerebral ischemia. We cover the upstream and downstream pathways that regulate the activation state of mTOR complexes. Furthermore, we summarize recent advances in our understanding of mTORC1 and mTORC2 status in ischemia–hypoxia at tissue and cellular levels and analyze the existing evidence related to two types of neural cells, namely glia and neurons. Finally, we discuss the potential use of mTORC1 and mTORC2 as therapeutic targets after stroke.
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Affiliation(s)
- Mario Villa-González
- Departamento de Biología (Fisiología Animal), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (M.V.-G.); (G.M.-L.)
- Centro de Biología Molecular “Severo Ochoa” (CBMSO), Universidad Autónoma de Madrid/CSIC, 28049 Madrid, Spain
| | - Gerardo Martín-López
- Departamento de Biología (Fisiología Animal), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (M.V.-G.); (G.M.-L.)
| | - María José Pérez-Álvarez
- Departamento de Biología (Fisiología Animal), Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain; (M.V.-G.); (G.M.-L.)
- Centro de Biología Molecular “Severo Ochoa” (CBMSO), Universidad Autónoma de Madrid/CSIC, 28049 Madrid, Spain
- Correspondence: ; Tel.: +34-91-497-2819
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Li T, Xu T, Zhao J, Gao H, Xie W. Depletion of iNOS-positive inflammatory cells decelerates neuronal degeneration and alleviates cerebral ischemic damage by suppressing the inflammatory response. Free Radic Biol Med 2022; 181:209-220. [PMID: 35150825 DOI: 10.1016/j.freeradbiomed.2022.02.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 01/25/2022] [Accepted: 02/08/2022] [Indexed: 01/05/2023]
Abstract
Ischemic stroke leads to neuronal damage and severe inflammation that activate iNOS expression in different cell types, especially inflammatory cells in the brain. It is shown that NO released from iNOS contributes to the pathological development of cerebral ischemia. However, the role of these iNOS-expressing inflammatory cells in ischemic stroke has not been fully elucidated. Our purpose is to test if ischemia-induced iNOS+ inflammatory cells may exaggerate cerebral inflammation to exacerbate neuronal deficit. We studied the dynamics of iNOS+ cells after stroke and found an early and sustained iNOS expression at lesion site. Since iNOS is highly expressed in inflammatory cells after injury, we depleted the iNOS + inflammatory cells via the selective scavenger GdCl3, and investigated its effect on stroke outcome, neuronal and vascular deficit, and inflammatory response. After GdCl3 treatment, half of iNOS+ inflammatory cells were depleted, including mainly activated microglia/macrophages and some astrocytes. Selective depletion of iNOS+ inflammatory cells resulted in a pronounced reduction in brain damage, resulting in improvement of motor ability. Histologic studies and in vivo two-photon imaging data revealed a slowdown of neuronal degeneration after the depletion of iNOS+ inflammatory cells. In contrast to iNOS inhibition alone, depletion of iNOS+ inflammatory cells profoundly altered the immune microenvironment profile, in addition to reducing NO production. qRT-PCR analysis showed that depletion of iNOS+ inflammatory cells significantly restrained the production of pro-inflammatory cytokines, which moderated the immune microenvironment at the lesion site. Taken together, our data demonstrate that depleting iNOS+ inflammatory cells prevents neuronal damage not only by inhibiting NO, but also importantly by suppressing the inflammatory response, which is beneficial to ischemic injury. These results provide evidence that iNOS+ inflammatory cells, as a vital source of pro-inflammatory cytokines, contribute to the development of ischemic damage and could be a potential therapeutic target for the treatment of ischemia.
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Affiliation(s)
- Ting Li
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 73000, China.
| | - Ting Xu
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 73000, China
| | - Jin Zhao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 73000, China
| | - Hao Gao
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 73000, China
| | - Wenguang Xie
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, 73000, China
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Schaefer A, Journaux M, Mourabit HE, Mouri S, Wendum D, Lasnier E, Couraud PO, Housset C, Thabut D, Rudler M, Weiss N. A systemic mechanism of increased transendothelial migration of leukocytes through the blood-brain barrier in hepatic encephalopathy. Clin Res Hepatol Gastroenterol 2022; 46:101801. [PMID: 34517149 DOI: 10.1016/j.clinre.2021.101801] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/06/2021] [Indexed: 02/04/2023]
Abstract
BACKGROUND Hepatic encephalopathy (HE) is a frequent neurological complication of cirrhosis. Evidence suggests a synergic pathophysiological implication of hyperammonemia and systemic inflammation. In addition, the blood-brain barrier (BBB) permeability can be impaired in cirrhotic patients, notably in those displaying HE. We hypothesized that systemic inflammation could trigger leukocytes transendothelial migration (TEM) through the BBB in cirrhotic patients and especially those with HE. METHODS We studied the effects of patients' plasma on the TEM of the leukocyte U937 cell line in vitro, using a validated BBB model (hCMEC/D3 cell line). We compared TEM of U937 leukocytes across hCMEC/D3 monolayer incubated with the plasma of i) patients with cirrhosis without HE, ii) patients with cirrhosis and HE, iii) healthy controls. RESULTS We show that the plasma of cirrhotic patients with HE enhances TEM of U937 leukocytes across hCMEC/D3 BBB model. We found a correlation between U937 TEM on the one hand, the West-Haven score and ammonemia on the other one. A trend towards a correlation between U937 TEM and PS-100Beta in plasma, a marker of BBB solute's permeability increase, was also found. CONCLUSION These findings suggest that circulating factors could increase leukocytes TEM in cirrhotic patients and contribute to the increased BBB permeability that has been described in cirrhotic patients with HE.
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Affiliation(s)
- Augustin Schaefer
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France
| | - Martin Journaux
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France
| | - Haquima El Mourabit
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France
| | - Sarah Mouri
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France; AP-HP.Sorbonne Université, Hôpital Pitié-Salpêtrière, Service d'Hépato-Gastroentérologie, Unité de Soins Intensifs d'Hépatologie, Brain Liver Pitié-Salpêtrière (BLIPS) Study Group, F-75013 Paris, France
| | - Dominique Wendum
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France; AP-HP.Sorbonne Université, Hôpital Saint-Antoine, Service d'Anatomo-Pathologie, Service d'Hépatologie, Centre de Référence Maladie Rare (CRMR) Maladies Inflammatoires des Voies Biliaires-Hépatites Auto-immunes (MIVB-H), Service de Biochimie, F-75012 Paris, France
| | - Elisabeth Lasnier
- AP-HP.Sorbonne Université, Hôpital Saint-Antoine, Service d'Anatomo-Pathologie, Service d'Hépatologie, Centre de Référence Maladie Rare (CRMR) Maladies Inflammatoires des Voies Biliaires-Hépatites Auto-immunes (MIVB-H), Service de Biochimie, F-75012 Paris, France
| | | | - Chantal Housset
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France; AP-HP.Sorbonne Université, Hôpital Saint-Antoine, Service d'Anatomo-Pathologie, Service d'Hépatologie, Centre de Référence Maladie Rare (CRMR) Maladies Inflammatoires des Voies Biliaires-Hépatites Auto-immunes (MIVB-H), Service de Biochimie, F-75012 Paris, France
| | - Dominique Thabut
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France; AP-HP.Sorbonne Université, Hôpital Pitié-Salpêtrière, Service d'Hépato-Gastroentérologie, Unité de Soins Intensifs d'Hépatologie, Brain Liver Pitié-Salpêtrière (BLIPS) Study Group, F-75013 Paris, France
| | - Marika Rudler
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France; AP-HP.Sorbonne Université, Hôpital Pitié-Salpêtrière, Service d'Hépato-Gastroentérologie, Unité de Soins Intensifs d'Hépatologie, Brain Liver Pitié-Salpêtrière (BLIPS) Study Group, F-75013 Paris, France
| | - Nicolas Weiss
- Sorbonne Université, INSERM, Centre de recherche Saint-Antoine (CRSA), Institute of Cardiometabolism and Nutrition (ICAN), F-75012 Paris, France; AP-HP.Sorbonne Université, Hôpital Pitié-Salpêtrière, Département de Neurologie, Unité de Médecine Intensive Réanimation à Orientation Neurologique, Brain Liver Pitié-Salpêtrière (BLIPS) Study Group, Groupe de Recherche Clinique en REanimation et Soins intensifs du Patient en Insuffisance Respiratoire aiguE (GRC-RESPIRE), F-75013 Paris, France.
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195
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Huang T, Huang X, Li H, Qi J, Wang N, Xu Y, Zeng Y, Xiao X, Liu R, Chan YL, Oliver BG, Yi C, Li D, Chen H. Maternal Cigarette Smoke Exposure Exaggerates the Behavioral Defects and Neuronal Loss Caused by Hypoxic-Ischemic Brain Injury in Female Offspring. Front Cell Neurosci 2022; 16:818536. [PMID: 35250486 PMCID: PMC8894648 DOI: 10.3389/fncel.2022.818536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/25/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveHypoxic-ischemic encephalopathy affects ∼6 in 1,000 preterm neonates, leading to significant neurological sequela (e.g., cognitive deficits and cerebral palsy). Maternal smoke exposure (SE) is one of the common causes of neurological disorders; however, female offspring seems to be less affected than males in our previous study. We also showed that maternal SE exaggerated neurological disorders caused by neonatal hypoxic-ischemic brain injury in adolescent male offspring. Here, we aimed to examine whether female littermates of these males are protected from such insult.MethodsBALB/c dams were exposed to cigarette smoke generated from 2 cigarettes twice daily for 6 weeks before mating, during gestation and lactation. To induce hypoxic-ischemic brain injury, half of the pups from each litter underwent left carotid artery occlusion, followed by exposure to 8% oxygen (92% nitrogen) at postnatal day (P) 10. Behavioral tests were performed at P40–44, and brain tissues were collected at P45.ResultsMaternal SE worsened the defects in short-term memory and motor function in females with hypoxic-ischemic injury; however, reduced anxiety due to injury was observed in the control offspring, but not the SE offspring. Both hypoxic-ischemic injury and maternal SE caused significant loss of neuronal cells and synaptic proteins, along with increased oxidative stress and inflammatory responses.ConclusionOxidative stress and inflammatory response due to maternal SE may be the mechanism of worsened neurological outcomes by hypoxic-ischemic brain injury in females, which was similar to their male littermates shown in our previous study.
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Affiliation(s)
- Taida Huang
- Department of Pathology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Xiaomin Huang
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Hui Li
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Junhua Qi
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Nan Wang
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Yi Xu
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Yunxin Zeng
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Xuewen Xiao
- Department of Pathology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Ruide Liu
- Department of Pathology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Yik Lung Chan
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Brian G. Oliver
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
- Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney, Sydney, NSW, Australia
| | - Chenju Yi
- Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
- *Correspondence: Chenju Yi,
| | - Dan Li
- Department of Pathology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Dan Li,
| | - Hui Chen
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
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196
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Stroke induces disease-specific myeloid cells in the brain parenchyma and pia. Nat Commun 2022; 13:945. [PMID: 35177618 PMCID: PMC8854573 DOI: 10.1038/s41467-022-28593-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 01/18/2022] [Indexed: 11/09/2022] Open
Abstract
Inflammation triggers secondary brain damage after stroke. The meninges and other CNS border compartments serve as invasion sites for leukocyte influx into the brain thus promoting tissue damage after stroke. However, the post-ischemic immune response of border compartments compared to brain parenchyma remains poorly characterized. Here, we deeply characterize tissue-resident leukocytes in meninges and brain parenchyma and discover that leukocytes respond differently to stroke depending on their site of residence. We thereby discover a unique phenotype of myeloid cells exclusive to the brain after stroke. These stroke-associated myeloid cells partially resemble neurodegenerative disease-associated microglia. They are mainly of resident microglial origin, partially conserved in humans and exhibit a lipid-phagocytosing phenotype. Blocking markers specific for these cells partially ameliorates stroke outcome thus providing a potential therapeutic target. The injury-response of myeloid cells in the CNS is thus compartmentalized, adjusted to the type of injury and may represent a therapeutic target.
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197
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Spiteri AG, Wishart CL, Pamphlett R, Locatelli G, King NJC. Microglia and monocytes in inflammatory CNS disease: integrating phenotype and function. Acta Neuropathol 2022; 143:179-224. [PMID: 34853891 PMCID: PMC8742818 DOI: 10.1007/s00401-021-02384-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 11/11/2021] [Accepted: 11/11/2021] [Indexed: 02/08/2023]
Abstract
In neurological diseases, the actions of microglia, the resident myeloid cells of the CNS parenchyma, may diverge from, or intersect with, those of recruited monocytes to drive immune-mediated pathology. However, defining the precise roles of each cell type has historically been impeded by the lack of discriminating markers and experimental systems capable of accurately identifying them. Our ability to distinguish microglia from monocytes in neuroinflammation has advanced with single-cell technologies, new markers and drugs that identify and deplete them, respectively. Nevertheless, the focus of individual studies on particular cell types, diseases or experimental approaches has limited our ability to connect phenotype and function more widely and across diverse CNS pathologies. Here, we critically review, tabulate and integrate the disease-specific functions and immune profiles of microglia and monocytes to provide a comprehensive atlas of myeloid responses in viral encephalitis, demyelination, neurodegeneration and ischemic injury. In emphasizing the differential roles of microglia and monocytes in the severe neuroinflammatory disease of viral encephalitis, we connect inflammatory pathways common to equally incapacitating diseases with less severe inflammation. We examine these findings in the context of human studies and highlight the benefits and inherent limitations of animal models that may impede or facilitate clinical translation. This enables us to highlight common and contrasting, non-redundant and often opposing roles of microglia and monocytes in disease that could be targeted therapeutically.
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198
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Huang Q, Cai G, Liu T, Liu Z. Relationships Among Gut Microbiota, Ischemic Stroke and Its Risk Factors: Based on Research Evidence. Int J Gen Med 2022; 15:2003-2023. [PMID: 35795301 PMCID: PMC9252587 DOI: 10.2147/ijgm.s353276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/08/2022] [Indexed: 11/27/2022] Open
Abstract
Stroke is a highly lethal disease and disabling illness while ischemic stroke accounts for the majority of stroke. It has been found that inflammation plays a key role in the initiation and progression of stroke, and atherosclerotic plaque rupture is considered to be the leading cause of ischemic stroke. Furthermore, chronic inflammatory diseases, such as obesity, type 2 diabetes mellitus (T2DM) and hypertension, are also considered as the high-risk factors for stroke. Recently, the topic on how gut microbiota affects human health has aroused great concern. The initiation and progression of ischemic stroke has been found to have close relation with gut microbiota dysbiosis. Hence, this manuscript briefly summarizes the roles of gut microbiota in ischemic stroke and its related risk factors, and the practicability of preventing and alleviating ischemic stroke by reconstructing gut microbiota.
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Affiliation(s)
- Qinhong Huang
- First Clinical School, Guangzhou Medical University, Guangzhou, 511436, People’s Republic of China
| | - Guannan Cai
- First Clinical School, Guangzhou Medical University, Guangzhou, 511436, People’s Republic of China
| | - Ting Liu
- Guangzhou Key Laboratory of Enhanced Recovery after Abdominal Surgery, Innovation Center for Advanced Interdisciplinary Medicine, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700, People’s Republic of China
- Correspondence: Ting Liu; Zhihua Liu, Email ;
| | - Zhihua Liu
- Department of Anorectal Surgery, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700, People’s Republic of China
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199
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Saboo KV, Hu C, Varatharajah Y, Przybelski SA, Reid RI, Schwarz CG, Graff-Radford J, Knopman DS, Machulda MM, Mielke MM, Petersen RC, Arnold PM, Worrell GA, Jones DT, Jack Jr CR, Iyer RK, Vemuri P. Deep learning identifies brain structures that predict cognition and explain heterogeneity in cognitive aging. Neuroimage 2022; 251:119020. [PMID: 35196565 PMCID: PMC9045384 DOI: 10.1016/j.neuroimage.2022.119020] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/20/2022] [Accepted: 02/17/2022] [Indexed: 12/02/2022] Open
Abstract
Specific brain structures (gray matter regions and white matter tracts) play a dominant role in determining cognitive decline and explain the heterogeneity in cognitive aging. Identification of these structures is crucial for screening of older adults at risk of cognitive decline. Using deep learning models augmented with a model-interpretation technique on data from 1432 Mayo Clinic Study of Aging participants, we identified a subset of brain structures that were most predictive of individualized cognitive trajectories and indicative of cognitively resilient vs. vulnerable individuals. Specifically, these structures explained why some participants were resilient to the deleterious effects of elevated brain amyloid and poor vascular health. Of these, medial temporal lobe and fornix, reflective of age and pathology-related degeneration, and corpus callosum, reflective of inter-hemispheric disconnection, accounted for 60% of the heterogeneity explained by the most predictive structures. Our results are valuable for identifying cognitively vulnerable individuals and for developing interventions for cognitive decline.
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200
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Chelluboina B, Chokkalla AK, Mehta SL, Morris-Blanco KC, Bathula S, Sankar S, Park JS, Vemuganti R. Tenascin-C induction exacerbates post-stroke brain damage. J Cereb Blood Flow Metab 2022; 42:253-263. [PMID: 34689646 PMCID: PMC9122520 DOI: 10.1177/0271678x211056392] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The role of tenascin-C (TNC) in ischemic stroke pathology is not known despite its prognostic association with cerebrovascular diseases. Here, we investigated the effect of TNC knockdown on post-stroke brain damage and its putative mechanism of action in adult mice of both sexes. Male and female C57BL/6 mice were subjected to transient middle cerebral artery occlusion and injected (i.v.) with either TNC siRNA or a negative (non-targeting) siRNA at 5 min after reperfusion. Motor function (beam walk and rotarod tests) was assessed between days 1 and 14 of reperfusion. Infarct volume (T2-MRI), BBB damage (T1-MRI with contrast), and inflammatory markers were measured at 3 days of reperfusion. The TNC siRNA treated cohort showed significantly curtailed post-stroke TNC protein expression, motor dysfunction, infarction, BBB damage, and inflammation compared to the sex-matched negative siRNA treated cohort. These results demonstrate that the induction of TNC during the acute period after stroke might be a mediator of post-ischemic inflammation and secondary brain damage independent of sex.
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Affiliation(s)
- Bharath Chelluboina
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Anil K Chokkalla
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA.,Cellular and Molecular Pathology Graduate Program, University of Wisconsin, Madison, WI, USA
| | - Suresh L Mehta
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | | | | | - Sneha Sankar
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Jin Soo Park
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA
| | - Raghu Vemuganti
- Department of Neurological Surgery, University of Wisconsin, Madison, WI, USA.,Cellular and Molecular Pathology Graduate Program, University of Wisconsin, Madison, WI, USA.,William S. Middleton Veterans Administration Hospital, Madison, WI, USA
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