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Fan GB, Li Y, Xu GS, Zhao AY, Jin HJ, Sun SQ, Qi SH. Propofol Inhibits Ferroptotic Cell Death Through the Nrf2/Gpx4 Signaling Pathway in the Mouse Model of Cerebral Ischemia-Reperfusion Injury. Neurochem Res 2023; 48:956-966. [PMID: 36402927 DOI: 10.1007/s11064-022-03822-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 10/29/2022] [Accepted: 11/09/2022] [Indexed: 11/21/2022]
Abstract
Ferroptosis is characterized by excessive accumulation of iron and lipid peroxides, which are involved in ischemia, reperfusion-induced organ injury, and stroke. Propofol, an anesthetic agent, has neuroprotective effects due to its potent antioxidant, anti-ischemic, and anti-inflammatory properties. However, the relationship between propofol and ferroptosis is still unclear. In the current study, we elucidated the role of ferroptosis in the neuroprotective effect of propofol in mouse brains subjected to cerebral ischemia reperfusion injury (CIRI). Ferroptosis was confirmed by Western blotting assays, transmission electron microscopy, and glutathione assays. Propofol regulated Nrf2/Gpx4 signaling, enhanced antioxidant potential, inhibited the accumulation of lipid peroxides in CIRI-affected neurons, and significantly reversed CIRI-induced ferroptosis. Additionally, Gpx4 inhibitor RSL3 and Nrf2 inhibitor ML385 attenuated the effects of propofol on antioxidant capacity, lipid peroxidation, and ferroptosis in CIRI-affected neurons. Our data support a protective role of propofol against ferroptosis as a cause of cell death in mice with CIRI. Propofol protected against CIRI-induced ferroptosis partly by regulating the Nrf2/Gpx4 signaling pathway. These findings may contribute to the development of future therapies targeting ferroptosis induced by CIRI.
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Affiliation(s)
- Gui-Bo Fan
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Yan Li
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Gao-Shuo Xu
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - A-Yang Zhao
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Hong-Jiang Jin
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Si-Qi Sun
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Si-Hua Qi
- Department of Anesthesiology, The 4th Affiliated Hospital of Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China.
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Tirandi A, Sgura C, Carbone F, Montecucco F, Liberale L. Inflammatory biomarkers of ischemic stroke. Intern Emerg Med 2023; 18:723-732. [PMID: 36745280 PMCID: PMC10082112 DOI: 10.1007/s11739-023-03201-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/09/2023] [Indexed: 02/07/2023]
Abstract
Ischemic stroke remains the second leading cause of death and among the major causes of morbidity worldwide. Therapeutic options are currently limited to early reperfusion strategies, while pharmacological neuroprotective strategies despite showing promising results in the experimental setting constantly failed to enter the clinical arena. Inflammation plays an important role in the pathophysiology of ischemic stroke and mediators of inflammation have been longtime investigated as possible prognostic marker and therapeutic target for stroke patients. Here, we summarized available evidence on the role of cytokines, soluble adhesion molecules and adipokines in the pathophysiology, prognosis and therapy of ischemic stroke.
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Affiliation(s)
- Amedeo Tirandi
- Department of Internal Medicine, University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy
| | - Cosimo Sgura
- Department of Internal Medicine, University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy
| | - Federico Carbone
- Department of Internal Medicine, University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino Genoa, Italian Cardiovascular Network, Largo Rosanna Benzi 10, 16132, Genoa, Italy
| | - Fabrizio Montecucco
- Department of Internal Medicine, University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy.
- IRCCS Ospedale Policlinico San Martino Genoa, Italian Cardiovascular Network, Largo Rosanna Benzi 10, 16132, Genoa, Italy.
| | - Luca Liberale
- Department of Internal Medicine, University of Genoa, Viale Benedetto XV, 6, 16132, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino Genoa, Italian Cardiovascular Network, Largo Rosanna Benzi 10, 16132, Genoa, Italy
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3
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Chen X, Pang X, Yeo AJ, Xie S, Xiang M, Shi B, Yu G, Li C. The Molecular Mechanisms of Ferroptosis and Its Role in Blood-Brain Barrier Dysfunction. Front Cell Neurosci 2022; 16:889765. [PMID: 35663422 PMCID: PMC9160190 DOI: 10.3389/fncel.2022.889765] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
The blood-brain barrier (BBB) is a selective, semi-permeable layer of endothelial cells that protects the central nervous system from harmful substances circulating in blood. It is one of the important barriers of the nervous system. BBB dysfunction is an early pathophysiological change observed in nervous system diseases. There are few treatments for BBB dysfunction, so this motivates the review. Ferroptosis is a novel cell death mode caused by iron-mediated lipid peroxidation accumulation, which has recently attracted more attention due to its possible role in nervous system disorders. Studies have shown that lipid peroxidation and iron accumulation are related to the barrier dysfunction, especially the expression of tight junction proteins. Therefore, examination of the relationship between ferroptosis and BBB dysfunction may reveal new targets for the treatment of brain diseases.
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Affiliation(s)
- Xiaoshu Chen
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Xinru Pang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Abrey J. Yeo
- University of Queensland Centre for Clinical Research, Brisbane, QLD, Australia
| | - Siwen Xie
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Mengting Xiang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Bin Shi
- Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Gongchang Yu
- Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- *Correspondence: Gongchang Yu,
| | - Chao Li
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
- Chao Li,
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Ye X, Song G, Huang S, Liang Q, Fang Y, Lian L, Zhu S. Caspase-1: A Promising Target for Preserving Blood–Brain Barrier Integrity in Acute Stroke. Front Mol Neurosci 2022; 15:856372. [PMID: 35370546 PMCID: PMC8971909 DOI: 10.3389/fnmol.2022.856372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/18/2022] [Indexed: 12/24/2022] Open
Abstract
The blood–brain barrier (BBB) acts as a physical and biochemical barrier that plays a fundamental role in regulating the blood-to-brain influx of endogenous and exogenous components and maintaining the homeostatic microenvironment of the central nervous system (CNS). Acute stroke leads to BBB disruption, blood substances extravasation into the brain parenchyma, and the consequence of brain edema formation with neurological impairment afterward. Caspase-1, one of the evolutionary conserved families of cysteine proteases, which is upregulated in acute stroke, mainly mediates pyroptosis and compromises BBB integrity via lytic cellular death and inflammatory cytokines release. Nowadays, targeting caspase-1 has been proven to be effective in decreasing the occurrence of hemorrhagic transformation (HT) and in attenuating brain edema and secondary damages during acute stroke. However, the underlying interactions among caspase-1, BBB, and stroke still remain ill-defined. Hence, in this review, we are concerned about the roles of caspase-1 activation and its associated mechanisms in stroke-induced BBB damage, aiming at providing insights into the significance of caspase-1 inhibition on stroke treatment in the near future.
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miR-155-5p in Extracellular Vesicles Derived from Choroid Plexus Epithelial Cells Promotes Autophagy and Inflammation to Aggravate Ischemic Brain Injury in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:8603427. [PMID: 35222806 PMCID: PMC8865969 DOI: 10.1155/2022/8603427] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 01/08/2022] [Indexed: 12/12/2022]
Abstract
Ischemic stroke is a common disease of the central nervous system, and ischemic brain injury (IBI) is its main manifestation. Recently, extracellular vesicles (EVs) have been strongly related to the diagnosis and treatment of IBI. However, the underlying mechanism of their effects remains enigmatic. In the present study, we aimed to study how miR-155-5p plays a role in choroid plexus epithelial (CPE) cell-derived EVs in IBI pathology. We found that miR-155-5p expression was enriched in CPE cell-derived EVs, which were subsequently internalized by neurons, enabling the delivery of miR-155-5p into neurons. An inducible oxygen and glucose deprivation and reoxygenation (OGD/R) cell model was developed to mimic ischemic neuronal injury in vitro. miR-155-5p overexpression led to reduced neuron viability, promoted apoptosis, elevated autophagic proteins' expression, and activated NLR family pyrin domain-containing 3- (NLRP3-) related inflammasomes, thereby aggravating OGD-induced neuronal injury. A dual-luciferase reporter assay exhibited that miR-155-5p could inhibit the Ras homolog enriched in brain (Rheb) expression, a mechanism critical for miR-155-5p-mediated neuronal injury. Furthermore, a mouse IBI model was developed using the transient middle cerebral artery occlusion (tMCAO) method. Animal experiments verified that miR-155p delivery via CPE cell-derived EVs aggravated IBI by suppressing Rheb expression. In conclusion, miR-155-5p in CPE-derived EVs can aggravate IBI pathology by suppressing Rheb expression and promoting NLRP3-mediated inflammasomes, suggesting its role as a potential therapeutic target in IBI.
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Abareshi A, Momenabadi S, Vafaei AA, Bandegi AR, Vakili A. Neuroprotective Effects of Chemerin on a Mouse Stroke Model: Behavioral and Molecular Dimensions. Neurochem Res 2021; 46:3301-3313. [PMID: 34431027 DOI: 10.1007/s11064-021-03432-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/15/2021] [Accepted: 08/18/2021] [Indexed: 11/30/2022]
Abstract
The present study was conducted to investigate the effects of different doses of recombinant human Chemerin (rhChemerin) on brain damage, spatial memory, blood-brain barrier (BBB) disruption and cellular and molecular mechanisms in a mouse stroke model. The mouse stroke model was developed by blocking the middle cerebral artery for 1 h and performing reperfusion for 23 h. Immediately, one and three hours after the stroke, 200, 400 and 800 ng/mouse of intranasal rhChemerin was administered. Neuronal and BBB damage, spatial memory and neurological performance were examined 24 h after the stroke. Western blotting and immunofluorescence were utilized to determine the effects of rhChemerin on the expressions of nuclear factor kappa B (NF-κB), pro-inflammatory cytokines such as TNF-α and IL-1β, anti-inflammatory cytokines such as IL-10 and TGF-β and vascular endothelial growth factor (VEGF). Administering 400 and 800 ng/mouse of rhChemerin in the mice immediately and one hour after ischemia minimized the infarct size, BBB opening, spatial memory and neurological impairment (P < 0.001). Furthermore, 800 ng/mouse of rhChemerin significantly diminished terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL)-positive (apoptotic) cells, suppressed the expressions of NF-kB, TNF-α and IL-1β and upregulated IL-10 and VEGF in the cortex and hippocampus of the mice. The present findings showed that rhChemerin administered immediately and one hour after stroke alleviates neuronal and BBB injures and improves spatial memory. These effects of rhChemerin may be mediated by inhibiting inflammatory pathways and apoptotic machinery.
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Affiliation(s)
- Azam Abareshi
- Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Shahein Momenabadi
- Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Abbas Ali Vafaei
- Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Ahmad Reza Bandegi
- Department of Biochemistry, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Abedin Vakili
- Research Center and Department of Physiology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
- Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
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Andone S, Bajko Z, Motataianu A, Mosora O, Balasa R. The Role of Biomarkers in Atherothrombotic Stroke-A Systematic Review. Int J Mol Sci 2021; 22:ijms22169032. [PMID: 34445740 PMCID: PMC8396595 DOI: 10.3390/ijms22169032] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 12/26/2022] Open
Abstract
Stroke represents the primary debilitating disease in adults and is the second-highest cause of death worldwide. Atherosclerosis, the most prevalent etiology for vascular conditions, is a continuous process that gradually creates and develops endothelial lesions known as atherosclerotic plaques. These lesions lead to the appearance of atherothrombotic stroke. In the last decades, the role of biological biomarkers has emerged as either diagnostic, prognostic, or therapeutic targets. This article aims to create a list of potential biomarkers related to atherothrombotic stroke by reviewing the currently available literature. We identified 23 biomarkers and assessed their roles as risk factors, detection markers, prognostic predictors, and therapeutic targets. The central aspect of these biomarkers is related to risk stratification, especially for patients who have not yet suffered a stroke. Other valuable data are focused on the predictive capabilities for stroke patients regarding short-term and long-term prognosis, including their influence over the acute phase treatment, such as rt-PA thrombolysis. Although the role of biomarkers is anticipated to be of extreme value in the future, they cannot yet compete with traditional stroke neuroimaging markers but could be used as additional tools for etiological diagnosis.
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Affiliation(s)
- Sebastian Andone
- Doctoral School, ‘George Emil Palade’ University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 540142 Targu Mures, Romania; (S.A.); (R.B.)
- 1st Neurology Clinic, Mures County Clinical Emergency Hospital, 540136 Targu Mures, Romania; (A.M.); (O.M.)
| | - Zoltan Bajko
- 1st Neurology Clinic, Mures County Clinical Emergency Hospital, 540136 Targu Mures, Romania; (A.M.); (O.M.)
- Department of Neurology, University of Medicine, Pharmacy, Science and Technology Targu Mures, 540136 Targu Mures, Romania
- Correspondence:
| | - Anca Motataianu
- 1st Neurology Clinic, Mures County Clinical Emergency Hospital, 540136 Targu Mures, Romania; (A.M.); (O.M.)
- Department of Neurology, University of Medicine, Pharmacy, Science and Technology Targu Mures, 540136 Targu Mures, Romania
| | - Oana Mosora
- 1st Neurology Clinic, Mures County Clinical Emergency Hospital, 540136 Targu Mures, Romania; (A.M.); (O.M.)
| | - Rodica Balasa
- Doctoral School, ‘George Emil Palade’ University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 540142 Targu Mures, Romania; (S.A.); (R.B.)
- 1st Neurology Clinic, Mures County Clinical Emergency Hospital, 540136 Targu Mures, Romania; (A.M.); (O.M.)
- Department of Neurology, University of Medicine, Pharmacy, Science and Technology Targu Mures, 540136 Targu Mures, Romania
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8
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Zhao Y, Ma X, Zhou Y, Xie J, Liu X, Zhao Y. DDAH-1, via regulation of ADMA levels, protects against ischemia-induced blood-brain barrier leakage. J Transl Med 2021; 101:808-823. [PMID: 33574439 DOI: 10.1038/s41374-021-00541-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/05/2021] [Accepted: 01/07/2021] [Indexed: 01/01/2023] Open
Abstract
Dimethylarginine dimethylamino hydrolase-1 (DDAH-1) is an important regulator of nitric oxide (NO) metabolism that has been implicated in the pathogenesis of cardiovascular diseases. Nevertheless, its role in cerebral ischemia still needs to be elucidated. Herein, we examined the expression of DDAH-1 in the brain of rat by double-label immunofluorescence staining. DDAH-1 knock-out (DDAH-1-/-) and wild-type rats underwent middle cerebral artery occlusion/reperfusion (MCAO/R). After 24 h, neurological scores, TTC staining and TUNEL assay were used to evaluate neurological damages. 3 and 7-days infarct outcomes were also shown. Blood-brain-barrier (BBB) permeability was examined via Evans blue extravasation and tight junction (TJ) proteins expression and mRNA levels by western blot and RT-qPCR. The levels of plasma asymmetric dimethylarginine (ADMA), NO and ADMA in brain tissue were also assessed. In addition, supplementation of L-arginine to DDAH-1-/- rats was used to explore its role in regulating NO. DDAH-1 was abundantly distributed in cerebral cortex and basal nuclei, and mainly expressed in neurons and endothelial cells. DDAH-1-/- rats showed aggravated neurological damage and BBB disruption, including decrease of TJ proteins expression but indistinguishable mRNA levels after MCAO/R. DDAH-1 depletion and neurological damages were accompanied with increased ADMA levels and decreased NO concentrations. The supplementation with L-arginine partly restored the neurological damages and BBB disruption. To sum up, DDAH-1 revealed to have a protective role in ischemia stroke (IS) and IS-induced leakage of BBB via decreasing ADMA level and possibly via preventing TJ proteins degradation.
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Affiliation(s)
- Yichen Zhao
- Department of Neurology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No.301 Middle Yanchang Road, Shanghai, 200072, PR China
| | - Xiaoye Ma
- Department of Neurology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No.301 Middle Yanchang Road, Shanghai, 200072, PR China
| | - Yuchen Zhou
- Department of Neurology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No.301 Middle Yanchang Road, Shanghai, 200072, PR China
| | - Junchao Xie
- Department of Neurology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No.301 Middle Yanchang Road, Shanghai, 200072, PR China
| | - Xueyuan Liu
- Department of Neurology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No.301 Middle Yanchang Road, Shanghai, 200072, PR China.
| | - Yanxin Zhao
- Department of Neurology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No.301 Middle Yanchang Road, Shanghai, 200072, PR China.
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Chen W, Wang H, Zhu Z, Feng J, Chen L. Exosome-Shuttled circSHOC2 from IPASs Regulates Neuronal Autophagy and Ameliorates Ischemic Brain Injury via the miR-7670-3p/SIRT1 Axis. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 22:657-672. [PMID: 33230464 PMCID: PMC7581834 DOI: 10.1016/j.omtn.2020.09.027] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/21/2020] [Indexed: 02/07/2023]
Abstract
The aim of the present study was to investigate the neuroprotective roles and mechanisms of the circular RNA circSHOC2 in ischemic-preconditioned astrocyte-derived exosomes (IPAS-EXOs) against ischemic stroke. We established an ischemia model based on oxygen glucose deprivation (OGD) in vitro and isolated resultant exosomes from astrocytes. Neuronal viability and apoptosis were determined by Cell Counting Kit-8 (CCK-8) assays and TUNEL (terminal deoxynucleotidyltransferase-mediated deoxyuridine triphosphate nick end labeling) staining, respectively. Autophagy-related proteins were analyzed by western blotting. We found that exosomes derived from IPAS-preconditioned medium (IPAS-CM) exerted neuroprotection. Furthermore, circSHOC2 expression was significantly upregulated in exosomes released from IPAS-CM. Overexpression of circSHOC2 in neurons yielded the same protective effects as those from IPAS-EXOs in vitro, and similar results were also observed in the middle cerebral artery occlusion (MCAO) mouse model. Mechanistically, circSHOC2 reduced neuronal apoptosis via regulating autophagy. Furthermore, circSHOC2 was found to sponge miR-7670-3p, which regulated SIRT1 expression. Transfection with an miR-7670-3p small interfering RNA (siRNA) (siRNA-7670-3p) and incubation with circSHOC2 extracellular vesicles attenuated ischemia-induced neuronal apoptosis in vivo and in vitro, while silencing of SIRT1 reversed the protective effects of exosomal circSHOC2 on hypoxic cerebral neurons. Taken together, our findings indicate that circSHOC2 in IPAS-EXOs suppressed neuronal apoptosis and ameliorated neuronal damage by regulating autophagy and acting on the miR-7670-3p/SIRT1 axis, which might contribute to a therapeutic strategy for ischemic stroke treatment.
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Affiliation(s)
- Wanghao Chen
- Medical School of Southeast University, Nanjing 210009, P.R. China
| | - Hong Wang
- Medical School of Southeast University, Nanjing 210009, P.R. China
| | - Zhihan Zhu
- Medical School of Southeast University, Nanjing 210009, P.R. China
| | - Jia Feng
- Medical School of Southeast University, Nanjing 210009, P.R. China
| | - Lukui Chen
- Medical School of Southeast University, Nanjing 210009, P.R. China.,Department of Neurosurgery, Neuroscience Center, Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, P.R. China
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Oxytocin Reduces Brain Injury and Maintains Blood–Brain Barrier Integrity After Ischemic Stroke in Mice. Neuromolecular Med 2020; 22:557-571. [DOI: 10.1007/s12017-020-08613-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/29/2020] [Indexed: 12/16/2022]
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11
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Probiotic supplementation attenuates hippocampus injury and spatial learning and memory impairments in a cerebral hypoperfusion mouse model. Mol Biol Rep 2019; 46:4985-4995. [DOI: 10.1007/s11033-019-04949-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 06/27/2019] [Indexed: 12/18/2022]
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12
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New progress in the approaches for blood–brain barrier protection in acute ischemic stroke. Brain Res Bull 2019; 144:46-57. [DOI: 10.1016/j.brainresbull.2018.11.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/10/2018] [Accepted: 11/13/2018] [Indexed: 02/06/2023]
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13
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Behrouzifar S, Vakili A, Barati M. The Effects of Mouse Recombinant Resistin on mRNA Expression of Proinflammatory and Anti-Inflammatory Cytokines and Heat Shock Protein-70 in Experimental Stroke Model. J Stroke Cerebrovasc Dis 2018; 27:3272-3279. [PMID: 30120034 DOI: 10.1016/j.jstrokecerebrovasdis.2018.07.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 07/04/2018] [Accepted: 07/16/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Our recent research showed that resistin has a neuroprotective effect against stroke-induced injury through suppressing apoptosis and oxidative stress. However, the molecular mechanism of neuroprotection of resistin is unclear. This work was designed to examine the effect of mouse recombinant resistin on mRNA expression of Tumor necrosis factor-α (TNF-α), Interleukin-1β (IL-1β), Interleukin-10 (IL-10), Transforming growth factor-β1 (TGF- β1), and Heat shock protein-70 (HSP-70) in mouse model of stroke. MATERIALS AND METHODS Transient focal cerebral ischemia was induced by the middle cerebral artery occlusion (MCAO) in mice. TNF-α, IL-1β, IL-10, TGF-β1, and HSP-70 mRNA were detected at sham (0 hour), 3 hours, 6 hours, 12 hours, and 24 hours after MCAO using real-time QRT-PCR method. Moreover, animals were treated with resistin at the dose of 400ng/mouse at the commencement of MCAO, and mRNA expression of the cytokines and HSP-70 was measured 24 hours after MCAO. RESULTS Tumor necrosis factor-α and IL-1β mRNA expression markedly increased at 12-hour time point and then returned to the basal level at 24 hours after MCAO; but HSP-70 mRNA expression increased at 24-hour time point. Furthermore, resistin (400 ng/mouse) significantly increased TGF-β1 and IL-10 and decreased HSP-70 gene expression at 24 hours after MCAO. CONCLUSIONS Our findings revealed that a molecular mechanism of attenuating ischemic damage by resistin administration probably is increased mRNA expression of anti-inflammatory cytokines. However, applying resistin in the clinical settings for the treatment of stroke deserves further researches in the future.
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Affiliation(s)
- Sedigheh Behrouzifar
- Research Center and Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Abedin Vakili
- Research Center and Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
| | - Mehdi Barati
- Cancer Research Center, Semnan University of Medical Sciences, Semnan, Iran
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14
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Asadi Y, Gorjipour F, Behrouzifar S, Vakili A. Irisin Peptide Protects Brain Against Ischemic Injury Through Reducing Apoptosis and Enhancing BDNF in a Rodent Model of Stroke. Neurochem Res 2018; 43:1549-1560. [PMID: 29882126 DOI: 10.1007/s11064-018-2569-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/29/2018] [Accepted: 06/04/2018] [Indexed: 12/28/2022]
Abstract
Evidence has shown therapeutic potential of irisin in cerebral stroke. The present study aimed to assess the effects of recombinant irisin on the infarct size, neurological outcomes, blood-brain barrier (BBB) permeability, apoptosis and brain-derived neurotrophic factor (BDNF) expression in a mouse model of stroke. Transient focal cerebral ischemia was established by middle cerebral artery occlusion (MCAO) for 45 min and followed reperfusion for 23 h in mice. Recombinant irisin was administrated at doses of 0.1, 0.5, 2.5, 7.5, and 15 µg/kg, intracerebroventricularly (ICV), on the MCAO beginning. Neurological outcomes, infarct size, brain edema and BBB permeability were evaluated by modified neurological severity score (mNSS), 2,3,5-triphenyltetrazolium chloride (TTC) staining and Evans blue (EB) extravasation methods, respectively, at 24 h after ischemia. Apoptotic cells and BDNF protein were detected by TUNEL assay and immunohistochemistry techniques. The levels of Bcl-2, Bax and caspase-3 proteins were measured by immunoblotting technique. ICV irisin administration at doses of 0.5, 2.5, 7.5 and 15 µg/kg, significantly reduced infarct size, whereas only in 7.5 and 15 µg/kg improved neurological outcome (P < 0.001). Treatment with irisin (7.5 µg/kg) reduced brain edema (P < 0.001) without changing BBB permeability (P > 0.05). Additionally, irisin (7.5 µg/kg) significantly diminished apoptotic cells and increased BDNF immunoreactivity in the ischemic brain cortex (P < 0.004). Irisin administration significantly downregulated the Bax and caspase-3 expression and upregulated the Bcl-2 protein. The present study indicated that irisin attenuates brain damage via reducing apoptosis and increasing BDNF protein of brain cortex in the experimental model of stroke in mice.
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Affiliation(s)
- Yasin Asadi
- Research Center and Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Fazel Gorjipour
- Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sedigheh Behrouzifar
- Research Center and Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Abedin Vakili
- Research Center and Department of Physiology, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
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