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Yaghoobi Z, Seyed Bagher Nazeri SS, Asadi A, Derafsh E, Talebi Taheri A, Tamtaji Z, Dadgostar E, Rahmati-Dehkordi F, Aschner M, Mirzaei H, Tamtaji OR, Nabavizadeh F. Non-coding RNAs and Aquaporin 4: Their Role in the Pathogenesis of Neurological Disorders. Neurochem Res 2024; 49:583-596. [PMID: 38114727 DOI: 10.1007/s11064-023-04067-8] [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: 09/23/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/21/2023]
Abstract
Neurological disorders are a major group of non-communicable diseases affecting quality of life. Non-Coding RNAs (ncRNAs) have an important role in the etiology of neurological disorders. In studies on the genesis of neurological diseases, aquaporin 4 (AQP4) expression and activity have both been linked to ncRNAs. The upregulation or downregulation of several ncRNAs leads to neurological disorder progression by targeting AQP4. The role of ncRNAs and AQP4 in neurological disorders is discussed in this review.
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Affiliation(s)
- Zahra Yaghoobi
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, I.R. of Iran
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, I.R. of Iran
| | | | - Amir Asadi
- Psychiatry and Behavioral Sciences Research Center, School of Medicine, Addiction Institute, and Department of Psychiatry, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ehsan Derafsh
- Windsor University School of Medicine, Cayon, St Kitts and Nevis
| | - Abdolkarim Talebi Taheri
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zeinab Tamtaji
- Student Research Committee, Kashan University of Medical Sciences, Kashan, I.R. of Iran
| | - Ehsan Dadgostar
- Behavioral Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, I.R. of Iran
- Student Research Committee, Isfahan University of Medical Sciences, Isfahan, I.R. of Iran
| | - Fatemeh Rahmati-Dehkordi
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, I.R. of Iran
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, I.R. of Iran
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, I.R. of Iran.
| | - Omid Reza Tamtaji
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, I.R. of Iran.
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, I.R. of Iran.
| | - Fatemeh Nabavizadeh
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, I.R. of Iran.
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, I.R. of Iran.
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2
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Liu H, Li T, Ma B, Wang Y, Sun J. Hyaluronan and Proteoglycan Link Protein 1 Activates the BMP4/Smad1/5/8 Signaling Pathway to Promote Osteogenic Differentiation: an Implication in Fracture Healing. Mol Biotechnol 2023; 65:1653-1663. [PMID: 36737556 DOI: 10.1007/s12033-023-00677-3] [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: 12/08/2022] [Accepted: 01/17/2023] [Indexed: 02/05/2023]
Abstract
Osteoblast regeneration, characterized by osteoblast differentiation, is the basis of fracture healing and accelerates fracture repair. It has been reported that hyaluronan and proteoglycan link protein 1 (HAPLN1) is overexpressed during osteoblast differentiation and regulates cartilage regeneration, but its function in fracture healing remains unclear. To elucidate this issue, we collected clinical blood samples of fracture healing, established a femoral fracture rat model, and induced an osteoblast differentiation cell model. We found that HAPLN1 was overexpressed in the serum of patients with fracture healing and the bone tissues of rats with fracture healing. Furthermore, the expression of HAPLN1 was increased time dependently during the osteogenic differentiation of MC3T3-E1 cells. HAPLN1 silencing prevented osteoblast differentiation and mineralization in MC3T3-E1 cells as evidenced by decreased osteoblast differentiation-related factors, suppressed alkaline phosphatase activities, and reduced alizarin red positive staining. Mechanically, the bone morphogenic protein 4 (BMP4)/Smad1/5/8 pathway, a facilitator of osteoblastic differentiation, was found to be inhibited by HAPLN1 knockdown, and inhibition of BMP4/Smad1/5/8 signaling enhanced the effects caused by HAPLN1 silencing. These findings demonstrated that HAPLN1 might promote fracture healing by facilitating osteogenic differentiation through the BMP4/Smad1/5/8 pathway, indicating that targeting HAPLN1 may be a feasible therapeutic candidate for fracture repair.
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Affiliation(s)
- Hu Liu
- Department of Pediatric Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Tao Li
- Department of Pediatric Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Ben Ma
- Department of Pediatric Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Yue Wang
- Department of Pediatric Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jun Sun
- Department of Pediatric Orthopedics, Anhui Province Children's Hospital Affiliated to Anhui Medical University, No. 39, Wangjiang East Road, Hefei, Anhui, China.
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3
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Zhai J, Li N, Zhang X, Li Y, Ma K, Wang R, Qin X, Yin J, Wang S. Isoflurane Enhances Autophagy by Activating AMPK/ULK1, Inhibits NLRP3, and Reduces Cognitive Impairment After Cerebral Ischemia-Reperfusion Injury in Rats. J Mol Neurosci 2023; 73:549-562. [PMID: 37389765 DOI: 10.1007/s12031-023-02135-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 06/08/2023] [Indexed: 07/01/2023]
Abstract
Cerebral ischemic stroke (CIS) has become the second leading cause of death worldwide, which is largely related to cerebral ischemia reperfusion injury (CIRI). Surgical intervention is a reliable treatment for CIS, which predictably causes cerebral reperfusion. Therefore, the choice of anesthetic drugs has important clinical significance. Isoflurane (ISO), one of the most used anesthetics, attenuates cognitive impairment and has brain protective effects. However, the role of isoflurane in regulating autophagy and its regulatory mechanism on inflammation in CIRI are still unclear. The middle cerebral artery occlusion (MCAO) method was used to establish a rat model of CIRI. After 24 h of reperfusion, all rats were evaluated by mNSS scoring and dark avoidance experiment. Western blotting and immunofluorescence were used to examine the expression of key proteins. Compared with the sham group, the MCAO group showed increased neurobehavioral scores and decreased cognitive memory function (P < 0.05). As for the ISO-treated MCAO rats, the neurobehavioral score was significantly decreased, the expression of AMPK, ULK1, Beclin1, and LC3B was significantly increased, and the cognitive and memory functions were also significantly improved (P < 0.05). After inhibition of autophagy pathway or key protein AMPK in autophagy, neurobehavioral scores and protein expression of NLRP3, IL-1β, and IL-18 were significantly increased (P < 0.05). Isoflurane post-treatment may enhance autophagy by activating the AMPK/ULK1 signaling pathway and further inhibit the release of inflammatory factors from NLRP3 inflammasomes, thereby ameliorating neurological function and cognitive impairment and exerting a protective effect on the brain in CIRI rats.
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Affiliation(s)
- Jingwen Zhai
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Nian Li
- Department of Anesthesiology, Affiliated Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Xu Zhang
- Department of Anesthesiology, the First Hospital of Wuhan, Wuhan, China
| | - Yan Li
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Ketao Ma
- Department of Physiology, Key Laboratory of Xinjiang Endemic and Ethnic Diseases, School of Medicine, Shihezi University, Shihezi, China
| | - Ruixue Wang
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Xinlei Qin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jiangwen Yin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China.
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China.
| | - Sheng Wang
- Department of Anesthesiology, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
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4
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Shpetko YY, Filippenkov IB, Denisova AE, Stavchansky VV, Gubsky LV, Limborska SA, Dergunova LV. Isoflurane Anesthesia's Impact on Gene Expression Patterns of Rat Brains in an Ischemic Stroke Model. Genes (Basel) 2023; 14:1448. [PMID: 37510352 PMCID: PMC10379230 DOI: 10.3390/genes14071448] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND Ischemic stroke (IS) is one of the most severe brain diseases. Animal models with anesthesia are actively used to study stroke genomics and pathogenesis. However, the anesthesia-related gene expression patterns of ischemic rat brains remain poorly understood. In this study, we sought to elucidate the impact of isoflurane (ISO) anesthesia on the extent of ischemic brain damage and gene expression changes associated with stroke. METHODS We used the transient middle cerebral artery occlusion (tMCAO) model under long-term and short-term ISO anesthesia, magnetic resonance imaging (MRI), RNA sequencing, and bioinformatics. RESULTS We revealed that the volume of cerebral damage at 24 h after tMCAO was inversely proportional to the duration of ISO anesthesia. Then, we revealed hundreds of overlapping ischemia-related differentially expressed genes (DEGs) with a cutoff of >1.5; Padj < 0.05, and 694 and 1557 DEGs only under long-term and short-term anesthesia, respectively, using sham-operated controls. Concomitantly, unique DEGs identified under short-term anesthesia were mainly associated with neurosignaling systems, whereas unique DEGs identified under long-term anesthesia were predominantly related to the inflammatory response. CONCLUSIONS We were able to determine the effects of the duration of anesthesia using isoflurane on the transcriptomes in the brains of rats at 24 h after tMCAO. Thus, specific genome responses may be useful in developing potential approaches to reduce damaged areas after cerebral ischemia and neuroprotection.
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Affiliation(s)
- Yana Y Shpetko
- Laboratory of Human Molecular Genetics, National Research Center "Kurchatov Institute", Kurchatov Sq. 2, Moscow 123182, Russia
| | - Ivan B Filippenkov
- Laboratory of Human Molecular Genetics, National Research Center "Kurchatov Institute", Kurchatov Sq. 2, Moscow 123182, Russia
| | - Alina E Denisova
- Department of Neurology, Neurosurgery and Medical Genetics, Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, Moscow 117997, Russia
| | - Vasily V Stavchansky
- Laboratory of Human Molecular Genetics, National Research Center "Kurchatov Institute", Kurchatov Sq. 2, Moscow 123182, Russia
| | - Leonid V Gubsky
- Department of Neurology, Neurosurgery and Medical Genetics, Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, Moscow 117997, Russia
- Federal Center for the Brain and Neurotechnologies, Federal Biomedical Agency, Ostrovitianov Str. 1, Building 10, Moscow 117997, Russia
| | - Svetlana A Limborska
- Laboratory of Human Molecular Genetics, National Research Center "Kurchatov Institute", Kurchatov Sq. 2, Moscow 123182, Russia
| | - Lyudmila V Dergunova
- Laboratory of Human Molecular Genetics, National Research Center "Kurchatov Institute", Kurchatov Sq. 2, Moscow 123182, Russia
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Fibbi B, Marroncini G, Naldi L, Peri A. The Yin and Yang Effect of the Apelinergic System in Oxidative Stress. Int J Mol Sci 2023; 24:ijms24054745. [PMID: 36902176 PMCID: PMC10003082 DOI: 10.3390/ijms24054745] [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: 01/26/2023] [Revised: 02/20/2023] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
Apelin is an endogenous ligand for the G protein-coupled receptor APJ and has multiple biological activities in human tissues and organs, including the heart, blood vessels, adipose tissue, central nervous system, lungs, kidneys, and liver. This article reviews the crucial role of apelin in regulating oxidative stress-related processes by promoting prooxidant or antioxidant mechanisms. Following the binding of APJ to different active apelin isoforms and the interaction with several G proteins according to cell types, the apelin/APJ system is able to modulate different intracellular signaling pathways and biological functions, such as vascular tone, platelet aggregation and leukocytes adhesion, myocardial activity, ischemia/reperfusion injury, insulin resistance, inflammation, and cell proliferation and invasion. As a consequence of these multifaceted properties, the role of the apelinergic axis in the pathogenesis of degenerative and proliferative conditions (e.g., Alzheimer's and Parkinson's diseases, osteoporosis, and cancer) is currently investigated. In this view, the dual effect of the apelin/APJ system in the regulation of oxidative stress needs to be more extensively clarified, in order to identify new potential strategies and tools able to selectively modulate this axis according to the tissue-specific profile.
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Affiliation(s)
- Benedetta Fibbi
- “Pituitary Diseases and Sodium Alterations” Unit, AOU Careggi, 50139 Florence, Italy
- Endocrinology, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
| | - Giada Marroncini
- “Pituitary Diseases and Sodium Alterations” Unit, AOU Careggi, 50139 Florence, Italy
| | - Laura Naldi
- “Pituitary Diseases and Sodium Alterations” Unit, AOU Careggi, 50139 Florence, Italy
| | - Alessandro Peri
- “Pituitary Diseases and Sodium Alterations” Unit, AOU Careggi, 50139 Florence, Italy
- Endocrinology, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
- Correspondence: ; Tel.: +39-05-5794-9275
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6
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Zhu X, Yang M, Yang L. Isoflurane Postconditioning Alleviates Ischemic Neuronal Injury Via MiR-384-5p Regulated Autophagy. Neuroscience 2023; 517:26-36. [PMID: 36707017 DOI: 10.1016/j.neuroscience.2023.01.018] [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: 11/25/2021] [Revised: 01/15/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023]
Abstract
The purpose of the study was to investigate the effect of isoflurane postconditioning on neuron injury in MCAO (middle cerebral artery occlusion) rats and its molecular mechanism of affecting autophagy through miR-384-5p/ATG5 (autophagy-related protein 5). HT22 cells (mouse hippocampal neuronal cell line) were exposed to 1.5% isoflurane for 30 min after OGD/R (oxygen-glucose deprivation/reoxygenation). Flow cytometry and CCK-8 kit were used to analyze changes in apoptosis and cell viability. The level of miR-384-5p was detected by qRT-PCR. Targetscan database prediction combined with dual luciferase reporter gene assay confirmed ATG5 as a target molecule downstream of miR-384-5p. In addition, western blot results confirmed that isoflurane postconditioning regulated miR-384-5p/ATG5 and significantly inhibited the expression of apoptosis-related proteins. Meanwhile, immunofluorescence staining for LC3II positivity combined with western blot results revealed that isoflurane postconditioning significantly inhibited autophagy. In vivo, MCAO induced neuronal injury for 90 min, followed by 24-h reperfusion. Isoflurane postconditioning (Iso) group underwent 1.5% isoflurane postconditioning for 60 min after reperfusion. Neurological scoring and TTC staining were used to evaluate the protective effect of isoflurane post-treatment on neurological injury, respectively. TUNEL staining and western blot results confirmed that isoflurane post-conditioning could regulate miR-384-5p and inhibit apoptosis. Immunofluorescence staining and western blot results confirmed that isoflurane post-conditioning inhibited autophagy in MCAO rats. Based on the above results, we speculated that the molecular mechanism of isoflurane post-conditioning to alleviate ischemic neuronal injury may be related to the regulation of miR-384-5p/ATG5-mediated autophagy.
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Affiliation(s)
- Xin Zhu
- The First Affiliated Hospital of Dalian Medical University, China
| | - Mei Yang
- The First Affiliated Hospital of Dalian Medical University, China
| | - Liu Yang
- The First Affiliated Hospital of Dalian Medical University, China.
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7
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Payal N, Sharma L, Sharma A, Hobanii YH, Hakami MA, Ali N, Rashid S, Sachdeva M, Gulati M, Yadav S, Chigurupati S, Singh A, Khan H, Behl T. Understanding the Therapeutic Approaches for Neuroprotection. Curr Pharm Des 2023; 29:3368-3384. [PMID: 38151849 DOI: 10.2174/0113816128275761231103102125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/07/2023] [Indexed: 12/29/2023]
Abstract
The term "neurodegenerative disorders" refers to a group of illnesses in which deterioration of nerve structure and function is a prominent feature. Cognitive capacities such as memory and decision-making deteriorate as a result of neuronal damage. The primary difficulty that remains is safeguarding neurons since they do not proliferate or regenerate spontaneously and are therefore not substituted by the body after they have been damaged. Millions of individuals throughout the world suffer from neurodegenerative diseases. Various pathways lead to neurodegeneration, including endoplasmic reticulum stress, calcium ion overload, mitochondrial dysfunction, reactive oxygen species generation, and apoptosis. Although different treatments and therapies are available for neuroprotection after a brain injury or damage, the obstacles are inextricably connected. Several studies have revealed the pathogenic effects of hypothermia, different breathed gases, stem cell treatments, mitochondrial transplantation, multi-pharmacological therapy, and other therapies that have improved neurological recovery and survival outcomes after brain damage. The present review highlights the use of therapeutic approaches that can be targeted to develop and understand significant therapies for treating neurodegenerative diseases.
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Affiliation(s)
- Nazrana Payal
- Department of Pharmacy, School of Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India
| | - Lalit Sharma
- Department of Pharmacology, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, India
| | - Aditi Sharma
- Department of Pharmacology, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, India
| | - Yahya Hosan Hobanii
- Department of Pharmacy, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | | | - Nemat Ali
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Summya Rashid
- Department of Pharmacology & Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Monika Sachdeva
- Department of Pharmacy, Fatima College of Health Sciences, Al Ain, United Arab Emirates
| | - Monica Gulati
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab 1444411, India
- ARCCIM, Faculty of Health, University of Technology, Sydney, Ultimo, NSW 2007, Australia
| | - Shivam Yadav
- School of Pharmacy, Babu Banarasi Das University, Lucknow, Uttar Pradesh, India
| | - Sridevi Chigurupati
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Buraydah 52571, Kingdom of Saudi Arabia
- Department of Biotechnology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Saveetha Nagar, Thandalam, Chennai 602105, India
| | - Abhiav Singh
- Department of Pharmacy, Indian Council of Medical Research, New Delhi, India
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan 23200, Pakistan
| | - Tapan Behl
- Department of Pharmacy, School of Health Sciences and Technology, University of Petroleum and Energy Studies, Bidholi, Dehradun, Uttarakhand, India
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8
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Yang B, Guo L, Yang X, Yu N. The pathogenesis and treatment of posterior reversible encephalopathy syndrome after neuromyelitis optica spectrum disorder: a case report and literature review. BMC Neurol 2022; 22:493. [PMID: 36539740 PMCID: PMC9764726 DOI: 10.1186/s12883-022-02985-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/22/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Posterior reversible encephalopathy syndrome (PRES) is a rare disease characterized by reversible subcortical vasogenic brain edema. Neuromyelitis optica spectrum disorder (NMOSD) is a frequent neurological autoimmune disease that is rarely reported to complicate PRES. CASE PRESENTATION Here, we report a case of neuromyelitis optica (NMO) concurrent with PRES. A 50-year-old woman presented with severe impairment of her health visual acuity, with significantly worsening of the motor weakness in both lower limbs during methylprednisolone therapy after her diagnosis of NMO. MRI showed new-onset brain edematous lesions of the bilateral frontal, occipital, and parietal lobes. PRES was considered. Her vision impairment and weakness of the extremities were alleviated after antihypertensive treatment and dehydration. The edema lesions detected by MRI also completely disappeared. CONCLUSIONS We reviewed 14 cases of NMO with PRES and concluded that the etiology of NMOSD concurrent PRES may be multifactorial, involving pathogenic IgGs against aquaporin-4 (AQP-4) and immunotherapy treatment. Different underlying pathogeneses require different treatment approaches.
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Affiliation(s)
- Bo Yang
- grid.54549.390000 0004 0369 4060Department of Center for Psychosomatic Medicine, Sichuan Provincial Center for Mental Health,Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Lei Guo
- grid.54549.390000 0004 0369 4060Department of Neurosurgery, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Xu Yang
- Department of Encephalopathy, Traditional Chinese Medicine Hospital of Leshan, Leshan, China
| | - Nengwei Yu
- grid.54549.390000 0004 0369 4060Department of Neurology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
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9
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Jacquens A, Needham EJ, Zanier ER, Degos V, Gressens P, Menon D. Neuro-Inflammation Modulation and Post-Traumatic Brain Injury Lesions: From Bench to Bed-Side. Int J Mol Sci 2022; 23:ijms231911193. [PMID: 36232495 PMCID: PMC9570205 DOI: 10.3390/ijms231911193] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Head trauma is the most common cause of disability in young adults. Known as a silent epidemic, it can cause a mosaic of symptoms, whether neurological (sensory-motor deficits), psychiatric (depressive and anxiety symptoms), or somatic (vertigo, tinnitus, phosphenes). Furthermore, cranial trauma (CT) in children presents several particularities in terms of epidemiology, mechanism, and physiopathology-notably linked to the attack of an immature organ. As in adults, head trauma in children can have lifelong repercussions and can cause social and family isolation, difficulties at school, and, later, socio-professional adversity. Improving management of the pre-hospital and rehabilitation course of these patients reduces secondary morbidity and mortality, but often not without long-term disability. One hypothesized contributor to this process is chronic neuroinflammation, which could accompany primary lesions and facilitate their development into tertiary lesions. Neuroinflammation is a complex process involving different actors such as glial cells (astrocytes, microglia, oligodendrocytes), the permeability of the blood-brain barrier, excitotoxicity, production of oxygen derivatives, cytokine release, tissue damage, and neuronal death. Several studies have investigated the effect of various treatments on the neuroinflammatory response in traumatic brain injury in vitro and in animal and human models. The aim of this review is to examine the various anti-inflammatory therapies that have been implemented.
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Affiliation(s)
- Alice Jacquens
- Unité de Neuroanesthésie-Réanimation, Hôpital de la Pitié Salpêtrière 43-87, Boulevard de l’Hôpital, F-75013 Paris, France
- Inserm, Maladies Neurodéveloppementales et Neurovasculaires, Université Paris Cité, F-75019 Paris, France
- Correspondence: ; Tel.: +33-1-42-16-00-00
| | - Edward J. Needham
- Division of Anaesthesia, Addenbrooke’s Hospital, University of Cambridge, Box 93, Hills Road, Cambridge CB2 2QQ, UK
| | - Elisa R. Zanier
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, 20156 Milan, Italy
| | - Vincent Degos
- Unité de Neuroanesthésie-Réanimation, Hôpital de la Pitié Salpêtrière 43-87, Boulevard de l’Hôpital, F-75013 Paris, France
- Inserm, Maladies Neurodéveloppementales et Neurovasculaires, Université Paris Cité, F-75019 Paris, France
| | - Pierre Gressens
- Inserm, Maladies Neurodéveloppementales et Neurovasculaires, Université Paris Cité, F-75019 Paris, France
| | - David Menon
- Division of Anaesthesia, Addenbrooke’s Hospital, University of Cambridge, Box 93, Hills Road, Cambridge CB2 2QQ, UK
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10
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Li N, Zhang X, Zhai J, Yin J, Ma K, Wang R, Qin X, Li Y, Dong X, Wang S. Isoflurane and Netrin-1 combination therapy enhances angiogenesis and neurological recovery by improving the expression of HIF-1α-Netrin-1-UNC5B/VEGF cascade to attenuate cerebral ischemia injury. Exp Neurol 2022; 352:114028. [PMID: 35247371 DOI: 10.1016/j.expneurol.2022.114028] [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: 01/22/2022] [Revised: 02/19/2022] [Accepted: 02/26/2022] [Indexed: 12/01/2022]
Abstract
Ischemic stroke (IS) causes many morbidities and deaths worldwide. However, the current monotherapy strategy is not satisfactory. Therefore, it is urgent to explore possible combined treatment methods. Although both isoflurane (ISO) and Netrin-1 (NT-1) have angiogenesis and neuroprotective effects, it is still unclear whether combining ISO with NT-1 will provide a positive effect and the possible mechanism of action. In this study, we used a photochemical (PTI) method to establish a mouse ischemic stroke model. ISO and NT-1 were used to treat the mice for 1 week. The adhesive removal test, Morris water maze test, modified neurological severity scores and triphenyl tetrazolium chloride staining were performed to test the treatment effect. Western blotting was performed to assess protein expression, immunofluorescence staining (IF) and immunohistochemical staining (IHC) was used to evaluate angiogenesis. The results suggested that combining ISO with NT-1 resulted in a better therapeutic effect than ISO or NT-1 treatment after PTI injury (all P < 0.01). The protein expression of VEGFA and CD34 in the ISO + NT-1 group was significantly increased compared with that in the other groups (all P < 0.05). IF and IHC also showed that the ISO + NT-1 group significantly improved angiogenesis (all P < 0.01). YC-1 (an HIF-1α inhibitor) and Unc5B siRNA were used to inhibit the expression of HIF-1α and UNC5B before and after combination ISO and NT-1 treatment. The combined inhibition group not only expressed the least VEGFA and CD34 but also expressed the least HIF-1α, UNC5B, FAK, and β-catenin in all groups (all P < 0.05). Most importantly, angiogenesis and neurological recovery were also significantly decreased by inhibiting HIF-1α and UNC5B (all P < 0.05). In conclusion, our results suggested that ISO combined with NT-1 could promote angiogenesis, recover long-term neurobehavioral function, and attenuate cerebral ischemia injury by activating the HIF-1α-Netrin-1-UNC5B/VEGF cascade.
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Affiliation(s)
- Nian Li
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Xu Zhang
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jingwen Zhai
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jiangwen Yin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Ketao Ma
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, China; Department of Physiology, School of Medicine, Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University, Shihezi, China
| | - Ruixue Wang
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, China; Department of Physiology, School of Medicine, Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University, Shihezi, China
| | - Xinlei Qin
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, China; Department of Physiology, School of Medicine, Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University, Shihezi, China
| | - Yan Li
- NHC Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, China; Department of Physiology, School of Medicine, Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi University, Shihezi, China
| | - Xiwei Dong
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China.
| | - Sheng Wang
- Department of Anesthesiology, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
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Apelin-13 attenuates injury following ischemic stroke by targeting matrix metalloproteinases (MMP), endothelin- B receptor, occludin/claudin-5 and oxidative stress. J Chem Neuroanat 2021; 118:102015. [PMID: 34454018 DOI: 10.1016/j.jchemneu.2021.102015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/21/2021] [Accepted: 08/23/2021] [Indexed: 12/16/2022]
Abstract
Oxidative stress, an adverse consequence of brain ischemia-reperfusion injury (IRI), activates matrix metalloproteinase enzymes which cause to destruction of extracellular matrix and tight junction proteins. Oxidative stress during stroke increases serum endothelin-1 and endothelin B receptor (ETBR) expression. Apelin-13, an endogenous peptide, is expressed in numerous tissues that regulate diverse physiological and pathological processes. This study aimed to investigate the effect of intravenous (IV) injection of apelin-13 on cerebral vasogenic edema due to brain IRI. Animals were divided into sham, ischemia, and treat groups. IRI model was induced by middle cerebral artery occlusion (MCAO) for 60 min followed by 23 h reperfusion. Apelin-13 was injected into the tail vein 5 min before reperfusion. Neurological defects were evaluated with longa test. Brain water content and BBB permeability were assessed according to cerebral dry-wet weight and brain Evans blue extraction. Malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT) were measured using the colorimetric method. Expression of occludin and claudin-5, matrix metalloproteinase- 2 and 9 (MMP-2 & 9) and, ETBR were evaluated using Western blot. Brain IRI was associated with BBB breakdowns and vasogenic edema. Apelin-13 significantly reduced BBB permeability and vasogenic edema. Apelin-13 significantly attenuated IRI-related oxidative stress. Apelin-13 decreased expression of mmp-2, 9 and ETBR, prevented from decrement of occludin and claudin-5 expersion, which protected BBB integrity and reduced vasogenic edema. In conclusion, our results have suggested that an IV injection of apelin-13 could somehow reduce vasogenic edema via targeting oxidative stress and ETBR expression.
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Liu D, Deng Q, Lei X, Lu W, Zhao Q, Shen Y. Overexpression of BMP4 protects retinal ganglion cells in a mouse model of experimental glaucoma. Exp Eye Res 2021; 210:108728. [PMID: 34390734 DOI: 10.1016/j.exer.2021.108728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 08/02/2021] [Accepted: 08/10/2021] [Indexed: 01/10/2023]
Abstract
PURPOSE Activation of bone morphogenetic protein (BMP) 4 signaling promotes the survival of retinal ganglion cell (RGC) after acute injury. Chordin-like 1 (CHRDL1) is an endogenous BMP antagonist. In this study, we researched whether CHRDL1 was involved in BMP4 signaling and regulation of RGC degeneration in a mouse model of glaucoma. METHODS Magnetic microbeads were intracameral injected to induce experimental glaucoma in a mouse model. A recombinant adeno-associated virus (rAAV) system was designed for overexpression of BMP4 or CHRDL1 in mouse retina. Immunohistochemistry and hematoxylin-eosin (HE) stains were performed to identify changes in retinal morphology. Electroretinogram (ERG) recordings were used to assess changes in visual function. RESULTS The mRNA expression levels of Bmp4 and its downstream BMPRIa, small mothers against decapentaplegic 1 (Smad1), were significantly upregulated in retinas with glaucoma. RGC survival was significantly enhanced in the beads + AAV-BMP4 group and significantly reduced in the beads + AAV-CHRDL1 group, compared with the beads + AAV-EGFP group. Similar results were observed in retinal explant culture in vitro. Consistent with these findings, the photopic negative response (PhNR)responses in ERG, which indicate RGC function, were restored in mice overexpressing BMP4, whereas a-wave and b-wave responses were not. Activation of CHRLD1 inhibited Smad1/5/8 phosphorylation and exacerbated RGC damage. The expression of Glial fibrillary acidic protein (GFAP) was decreased significantly in beads + AAV-BMP4 group. CONCLUSIONS BMP4 promoted RGC survival and visual function in an experimental glaucoma model. Activation of CHRDL1 exaggerated RGC degeneration by inhibiting the BMP4/Smad1/5/8 pathway. The mechanism of BMP4/Smad1/5/8 pathway may be related to the inhibition of glial cell activation. Our studies suggested that BMP4 and CHRLD1 might serve as therapeutic targets in glaucoma.
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Affiliation(s)
- Dongmei Liu
- Eye Institute, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430060, Hubei, China
| | - Qinqin Deng
- Eye Institute, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430060, Hubei, China
| | - Xinlan Lei
- Eye Institute, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430060, Hubei, China
| | - Wei Lu
- Eye Institute, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430060, Hubei, China
| | - Qingqing Zhao
- Eye Institute, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430060, Hubei, China
| | - Yin Shen
- Eye Institute, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430060, Hubei, China; Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, 430071, Hubei, China.
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13
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Wang H, Guo L, Wang Y, Song S. Isoflurane upregulates microRNA-9-3p to protect rats from hepatic ischemia-reperfusion injury through inhibiting fibronectin type III domain containing 3B. Cell Cycle 2021; 20:1527-1539. [PMID: 34308776 PMCID: PMC8409784 DOI: 10.1080/15384101.2021.1947548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 04/23/2021] [Accepted: 05/31/2021] [Indexed: 12/29/2022] Open
Abstract
Isoflurane has been studied in ischemia-reperfusion injury, while the regulatory mechanism by which isoflurane regulates microRNA(miR)-9-3p in hepatic ischemia/reperfusion injury (HIRI) via targeting fibronectin type III domain containing 3B (FNDC3B) remains seldom investigated. This study aims to determine the role of miR-9-3p in HIRI progression under the treatment of isoflurane. Rat HIRI models were established and treated with isoflurane. MiR-9-3p was altered to assess its role in inflammation, oxidative stress, transaminases, pathology, and hepatocyte apoptosis in HIRI rat liver tissues. Expression of miR-9-3p and FNDC3B in rat liver tissues was determined, and the targeting relationship between miR-9-3p and FNDC3B was confirmed using bioinformatic prediction and dual luciferase reporter gene assay. MiR-9-3p was downregulated, whereas FNDC3B was upregulated in HIRI rat liver tissues. Isoflurane treatment upregulated miR-9-3p and attenuated pathological changes, inflammation, oxidative stress, transaminases, and hepatocyte apoptosis in HIRI rat liver tissues. MiR-9-3p upregulation further strengthened the effect of isoflurane on HIRI, while miR-9-3p downregulation suppressed the therapeutic role of isoflurane. FNDC3B was confirmed as a target gene of miR-9-3p. Isoflurane upregulates miR-9-3p to protect rats from HIRI by inhibiting FNDC3VB. Our research may provide novel targets for HIRI treatment.
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Affiliation(s)
- Haiyan Wang
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Longlong Guo
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Yang Wang
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Shan Song
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
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Yang D, Yang X, Dai F, Wang Y, Yang Y, Hu M, Cheng Y. The Role of Bone Morphogenetic Protein 4 in Ovarian Function and Diseases. Reprod Sci 2021; 28:3316-3330. [PMID: 33966186 DOI: 10.1007/s43032-021-00600-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 04/22/2021] [Indexed: 12/19/2022]
Abstract
Bone morphogenetic proteins (BMPs) are the largest subfamily of the transforming growth factor-β (TGF-β) superfamily. BMP4 is a secreted protein that was originally identified due to its role in bone and cartilage development. Over the past decades, extensive literature has indicated that BMP4 and its receptors are widely expressed in the ovary. Dysregulation of BMP4 expression may play a vital role in follicular development, polycystic ovary syndrome (PCOS), and ovarian cancer. In this review, we summarized the expression pattern of BMP4 in the ovary, focused on the role of BMP4 in follicular development and steroidogenesis, and discussed the role of BMP4 in ovarian diseases such as polycystic ovary syndrome and ovarian cancer. Some studies have shown that the expression of BMP4 in the ovary is spatiotemporal and species specific, but the effects of BMP4 seem to be similar in follicular development of different species. In addition, BMP4 is involved in the development of hyperandrogenemia in PCOS and drug resistance in ovarian cancer, but further research is still needed to clarify the specific mechanisms.
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Affiliation(s)
- Dongyong Yang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, 100044, China
| | - Fangfang Dai
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yanqing Wang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yi Yang
- School of Physics & Technology, Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, Wuhan University, Wuhan, 430072, China.
| | - Min Hu
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
| | - Yanxiang Cheng
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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Zhang Q, Yin J, Xu F, Zhai J, Yin J, Ge M, Zhou W, Li N, Qin X, Li Y, Wang S. Isoflurane post-conditioning contributes to anti-apoptotic effect after cerebral ischaemia in rats through the ERK5/MEF2D signaling pathway. J Cell Mol Med 2021; 25:3803-3815. [PMID: 33621420 PMCID: PMC8051747 DOI: 10.1111/jcmm.16282] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/13/2020] [Accepted: 01/04/2021] [Indexed: 01/14/2023] Open
Abstract
The mechanisms of brain protection during ischaemic reperfusion injury induced by isoflurane (ISO) post‐conditioning are unclear. Myocyte enhancement factor 2 (MEF2D) has been shown to promote neural survival in a variety of models, in which multiple survival and death signals converge on MEF2D and modulate its activity. Here, we investigated the effect of MEF2D on the neuroprotective effects of ISO post‐conditioning on rats after cerebral ischaemia/reperfusion (I/R) injury. Rats underwent middle cerebral artery occlusion (MCAO) surgery with ischaemia for 90 minutes and reperfusion for 24‐48 hours. After MCAO, neurological status was assessed at 12, 24 and 48 hours by the Modified Neurological Severity Score (mNSS) test. The passive avoidance test (PAT) was used to assess cognition function. Histological and neuropathological evaluations were performed with HE staining and Nissl's staining, respectively. We measured the expression of MEF2D, ERK5, GFAP and caspase‐3 by immunofluorescent staining and Western blotting, and TUNEL staining to assess the severity of apoptosis in hippocampal CA1 area. We found that MEF2D was involved in nerve protection after I/R injury, and post‐treatment of ISO significantly promoted the phosphorylation of ERK5, increased MEF2D transcriptional activity, inhibited the expression of caspase‐3 and played a role of brain protection.
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Affiliation(s)
- Qingtong Zhang
- Department of Anesthesiology, Lu'an Hospital Affiliated to Anhui Medical University, Lu'an People's Hospital, Lu'an, China
| | - Jiangwen Yin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Feng Xu
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jingwen Zhai
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jieting Yin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Mingyue Ge
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Wenyi Zhou
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Nian Li
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Xinlei Qin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Yan Li
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Sheng Wang
- Department of Anesthesiology, First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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Isoflurane post-conditioning attenuates cerebral ischemia/reperfusion injury by reducing apoptotic through activating the BMP7/SMAD signaling pathway in rats. J Chem Neuroanat 2020; 112:101916. [PMID: 33373660 DOI: 10.1016/j.jchemneu.2020.101916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/12/2020] [Accepted: 12/22/2020] [Indexed: 01/03/2023]
Abstract
The expressions of different temporal patterns of bone morphogenetic proteins (BMPs) have changed after ischemic strokes, and ischemic preconditioning-induced neuroprotection was attenuated when BMP7 was inhibited. In the previous study, the neuroprotection of isoflurane postconditioning (ISPOC) against cerebral ischemia-reperfusion (I/R) injury has been addressed, with particular relevance to the role of BMP7. Consequently, in the present study, we continued to explore the mechanisms involved in the BMP7 signal mediated the neuroprotection of ISPOC. A rat model of the middle cerebral artery occlusion was used in this study. Rats were administered 1.5 % isoflurane, 60 min after 90 min of ischemia, followed by a 24 h reperfusion period. The 1.5 % ISPOC significantly ameliorated the cerebral infarct volumes, neurologic deficit scores, damaged neurons, and apoptotic neurons. Moreover, ISPOC unregulated the expressions of BMP7, p-Smad1/5/9, and p-p38. Whereas, the neuroprotective effect was weakened by LDN-193189 and SB203580, respectively, a BMP7/Smad1/5/9 and p38MAPK signaling pathway inhibitor. Furthermore, LDN-193189 downregulated the expression of p-p38. The present results of this study indicated that the neuroprotection of 1.5 % isoflurane postconditioning to cerebral ischemia-reperfusion injury is related to the activating of BMP7/Smad1/5/9 and p38MAPK signal pathway.
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Neag MA, Mitre AO, Catinean A, Mitre CI. An Overview on the Mechanisms of Neuroprotection and Neurotoxicity of Isoflurane and Sevoflurane in Experimental Studies. Brain Res Bull 2020; 165:281-289. [DOI: 10.1016/j.brainresbull.2020.10.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 10/09/2020] [Accepted: 10/12/2020] [Indexed: 12/13/2022]
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Abstract
Central nervous system injuries are a leading cause of death and disability worldwide. Although the exact pathophysiological mechanisms of various brain injuries vary, central nervous system injuries often result in an inflammatory response, and subsequently lead to brain damage. This suggests that neuroprotection may be necessany in the treatment of multiple disease models. The use of medical gases as neuroprotective agents has gained great attention in the medical field. Medical gases include common gases, such as oxygen, hydrogen and carbon dioxide; hydrogen sulphide and nitric oxide that have been considered toxic; volatile anesthetic gases, such as isoflurane and sevoflurane; and inert gases like helium, argon, and xenon. The neuroprotection from these medical gases has been investigated in experimental animal models of various types of brain injuries, such as traumatic brain injury, stroke, subarachnoid hemorrhage, cerebral ischemic/reperfusion injury, and neurodegenerative diseases. Nevertheless, the transition into the clinical practice is still lagging. This delay could be attributed to the contradictory paradigms and the conflicting results that have been obtained from experimental models, as well as the presence of inconsistent reports regarding their safety. In this review, we summarize the potential mechanisms underlying the neuroprotective effects of medical gases and discuss possible candidates that could improve the outcomes of brain injury.
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Affiliation(s)
- Yue-Zhen Wang
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Ting-Ting Li
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Hong-Ling Cao
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Wan-Chao Yang
- Department of Anesthesiology, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
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19
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TGF-β3/Smad3 Contributes to Isoflurane Postconditioning Against Cerebral Ischemia–Reperfusion Injury by Upregulating MEF2C. Cell Mol Neurobiol 2020; 40:1353-1365. [DOI: 10.1007/s10571-020-00822-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 02/27/2020] [Indexed: 10/24/2022]
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TGF-β2/Smad3 Signaling Pathway Activation Through Enhancing VEGF and CD34 Ameliorates Cerebral Ischemia/Reperfusion Injury After Isoflurane Post-conditioning in Rats. Neurochem Res 2019; 44:2606-2618. [DOI: 10.1007/s11064-019-02880-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 08/26/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
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Xu F, Zhang G, Yin J, Zhang Q, Ge MY, Peng L, Wang S, Li Y. Fluoxetine mitigating late-stage cognition and neurobehavior impairment induced by cerebral ischemia reperfusion injury through inhibiting ERS-mediated neurons apoptosis in the hippocampus. Behav Brain Res 2019; 370:111952. [DOI: 10.1016/j.bbr.2019.111952] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/11/2019] [Accepted: 05/16/2019] [Indexed: 01/16/2023]
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Peng L, Yin J, Ge M, Wang S, Xie L, Li Y, Si JQ, Ma K. Isoflurane Post-conditioning Ameliorates Cerebral Ischemia/Reperfusion Injury by Enhancing Angiogenesis Through Activating the Shh/Gli Signaling Pathway in Rats. Front Neurosci 2019; 13:321. [PMID: 31024240 PMCID: PMC6465767 DOI: 10.3389/fnins.2019.00321] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/20/2019] [Indexed: 11/18/2022] Open
Abstract
Background: Stroke is the second leading cause of death worldwide. Angiogenesis facilitates the formation of microvascular networks and promotes recovery after stroke. The Shh/Gli signaling pathway is implicated in angiogenesis and cerebral ischemia-reperfusion (I/R) injury. This study aimed at investigating the influence of isoflurane (ISO) post-conditioning on brain lesions and angiogenesis after I/R injury. Methods: Adult male Sprague-Dawley rats were subjected to middle cerebral artery occlusion (MCAO), 1.5 h occlusion and 24 h reperfusion (MCAO/R). The ISO post-conditioning group (ISO group) received 1 h ISO post-conditioning when reperfusion was initiated. Neurobehavioral tests, TTC staining, HE staining, Nissl staining, TUNEL staining, immunofluorescence (IF), immunohistochemistry (IH) and Western blot were performed to assess the effect of ISO after I/R injury. Results: ISO post-conditioning resulted in lower infarct volumes and neurologic deficit scores, higher rate of neurons survival, and less damaged and apoptotic cells after cerebral I/R injury in rats. Meanwhile, ISO post-conditioning significantly increased the expression levels of vascular endothelial growth factor (VEGF) and CD34 in the ischemic penumbra, relative to that in the Sham and I/R groups. However, cyclopamine, the specific inhibitor of the Sonic hedgehog (Shh) signaling pathway, decreased the expression levels of VEGF and CD34, and counteracted the protective effects of ISO post-conditioning against I/R injury in rats. Conclusions: ISO post-conditioning enhances angiogenesis in vivo partly via the Shh/Gli signaling pathway. Thus, Shh/Gli may represent new therapeutic targets for aiding recovery from stroke.
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Affiliation(s)
- Li Peng
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jiangwen Yin
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Mingyue Ge
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Sheng Wang
- Division of Life Sciences and Medicine, Department of Anesthesiology, First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China
| | - Liping Xie
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Yan Li
- Department of Anesthesiology, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, China
| | - Jun-Qiang Si
- Department of Physiology, School of Medicine, Shihezi University and The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi, China
| | - Ketao Ma
- Department of Physiology, School of Medicine, Shihezi University and The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Shihezi, China
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Zhu L, Yin H, Qian T, Qi GJ, Ren JS, Wang Y, Qi BX. Distinct expression and clinical value of aquaporin 4 in children with hand, foot and mouth disease caused by enterovirus 71. J Med Virol 2019; 94:587-593. [PMID: 30942492 DOI: 10.1002/jmv.25475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 11/10/2022]
Abstract
Brain dysfunction is a prerequisite for critical complications in children with hand, foot, and mouth disease (HFMD). Aquaporin 4 (AQP-4) may be involved in the pathological process of cerebral oedema and injury in children with severe and critical HFMD. This study aimed to assess the association of AQP-4 with the severity of enterovirus 71 (EV71)-associated HFMD. Children with EV71-infected HFMD were divided into a common group (clinical stage 1), a severe group (clinical stage 2), and a critical group (clinical stage 3) according to Chinese guidelines. The levels of AQP-4, interleukin-6 (IL-6), norepinephrine (NE), and neuron-specific enolase (NSE) before and after treatment were tested. Serum AQP-4, IL-6, NE, and NSE levels showed significant differences among the critical, severe, and common groups before and after treatment (P<0.01). No significant differences in AQP-4 levels in cerebrospinal fluid (CSF) were observed between the critical and severe groups before and after treatment, but the CSF AQP-4 levels in these two groups were higher than those in the common group before treatment (P<0.01). Serum AQP-4 levels, but not CSF AQP-4 levels, closely correlated with serum IL-6, NE, and NSE levels. These results suggest that the level of AQP-4 in serum, but not in CSF, is a candidate biomarker for evaluating the severity and prognosis of EV71-associated HFMD.
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Affiliation(s)
- Lei Zhu
- Department of Intensive Care Unit, Xuzhou Children's Hospital of Xuzhou Medical University, Xuzhou, China
| | - Hong Yin
- Department of Pharmacy, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Tong Qian
- Department of Clinical Laboratory, Xuzhou Children's Hospital of Xuzhou Medical University, Xuzhou, China
| | - Gong-Jian Qi
- Department of Intensive Care Unit, Xuzhou Children's Hospital of Xuzhou Medical University, Xuzhou, China
| | - Jin-Song Ren
- Department of Infectious Disease, Xuzhou Children's Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yin Wang
- Department of Infectious Disease, Xuzhou Children's Hospital of Xuzhou Medical University, Xuzhou, China
| | - Bo-Xiang Qi
- Department of Intensive Care Unit, Xuzhou Children's Hospital of Xuzhou Medical University, Xuzhou, China
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Zhang G, Ge M, Han Z, Wang S, Yin J, Peng L, Xu F, Zhang Q, Dai Z, Xie L, Li Y, Si J, Ma K. Wnt/β-catenin signaling pathway contributes to isoflurane postconditioning against cerebral ischemia-reperfusion injury and is possibly related to the transforming growth factorβ1/Smad3 signaling pathway. Biomed Pharmacother 2019; 110:420-430. [DOI: 10.1016/j.biopha.2018.11.143] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/24/2018] [Accepted: 11/28/2018] [Indexed: 01/06/2023] Open
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Han ZW, Chang YC, Zhou Y, Zhang H, Chen L, Zhang Y, Si JQ, Li L. GPER agonist G1 suppresses neuronal apoptosis mediated by endoplasmic reticulum stress after cerebral ischemia/reperfusion injury. Neural Regen Res 2019; 14:1221-1229. [PMID: 30804253 PMCID: PMC6425826 DOI: 10.4103/1673-5374.251571] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Studies have confirmed a strong association between activation of the endoplasmic reticulum stress pathway and cerebral ischemia/reperfusion (I/R) injury. In this study, three key proteins in the endoplasmic reticulum stress pathway (glucose-regulated protein 78, caspase-12, and C/EBP homologous protein) were selected to examine the potential mechanism of endoplasmic reticulum stress in the neuroprotective effect of G protein-coupled estrogen receptor. Female Sprague-Dawley rats received ovariectomy (OVX), and then cerebral I/R rat models (OVX + I/R) were established by middle cerebral artery occlusion. Immediately after I/R, rat models were injected with 100 μg/kg E2 (OVX + I/R + E2), or 100 μg/kg G protein-coupled estrogen receptor agonist G1 (OVX + I/R + G1) in the lateral ventricle. Longa scoring was used to detect neurobehavioral changes in each group. Infarct volumes were measured by 2,3,5-triphenyltetrazolium chloride staining. Morphological changes in neurons were observed by Nissl staining. Terminal dexynucleotidyl transferase-mediated nick end-labeling staining revealed that compared with the OVX + I/R group, neurological function was remarkably improved, infarct volume was reduced, number of normal Nissl bodies was dramatically increased, and number of apoptotic neurons in the hippocampus was decreased after E2 and G1 intervention. To detect the expression and distribution of endoplasmic reticulum stress-related proteins in the endoplasmic reticulum, caspase-12 distribution and expression were detected by immunofluorescence, and mRNA and protein levels of glucose-regulated protein 78, caspase-12, and C/EBP homologous protein were determined by polymerase chain reaction and western blot assay. The results showed that compared with the OVX + I/R group, E2 and G1 treatment obviously decreased mRNA and protein expression levels of glucose-regulated protein 78, C/EBP homologous protein, and caspase-12. However, the G protein-coupled estrogen receptor antagonist G15 (OVX + I/R + E2 + G15) could eliminate the effect of E2 on cerebral I/R injury. These results confirm that E2 and G protein-coupled estrogen receptor can inhibit the expression of endoplasmic reticulum stress-related proteins and neuronal apoptosis in the hippocampus, thereby improving dysfunction caused by cerebral I/R injury. Every experimental protocol was approved by the Institutional Ethics Review Board at the First Affiliated Hospital of Shihezi University School of Medicine, China (approval No. SHZ A2017-171) on February 27, 2017.
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Affiliation(s)
- Zi-Wei Han
- Department of Physiology, Medical College of Shihezi University; Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Yue-Chen Chang
- Department of Physiology, Medical College of Shihezi University; Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Ying Zhou
- Department of Physiology, Medical College of Shihezi University; Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Hang Zhang
- Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region; Affiliated Teng Zhou Central People's Hospital, Jining Medical University, Jining, Shandong Province, China
| | - Long Chen
- Department of Physiology, Medical College of Shihezi University; Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Yang Zhang
- Department of Physiology, Medical College of Shihezi University; Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Jun-Qiang Si
- Department of Physiology, Medical College of Shihezi University; Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region, China
| | - Li Li
- Department of Physiology, Medical College of Shihezi University; Key Laboratory of Xinjiang Endemic and Ethnic Disease, Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region; Department of Physiology, Jiaxing College of Medicine, Jiaxing, Zhejiang Province, China
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Shan Y, Yang F, Tang Z, Bi C, Sun S, Zhang Y, Liu H. Dexmedetomidine Ameliorates the Neurotoxicity of Sevoflurane on the Immature Brain Through the BMP/SMAD Signaling Pathway. Front Neurosci 2018; 12:964. [PMID: 30618586 PMCID: PMC6304752 DOI: 10.3389/fnins.2018.00964] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 12/03/2018] [Indexed: 12/11/2022] Open
Abstract
Numerous studies have demonstrated that general anesthetics might damage the nervous system, thus, the effect of general anesthetics on the developing brain has attracted much attention. Dexmedetomidine (Dex) exhibits a certain neuroprotective effect, but the mechanism is obscure. In our study, pregnant rats on gestational day 20 (G20) were exposed to 3% sevoflurane for 2 h or 4 h, and the neuronal apoptosis in hippocampal CA1 region of the offspring rats was detected by quantification of TUNEL positive cells and cleaved-caspase3 (cl-caspase3). Different doses of Dex were intraperitoneally injected before sevoflurane anesthesia; then, the expression of apoptotic-related proteins including BCL-2, BAX and cl-caspase3 as well as amyloid precursor protein (APP, a marker of axonal injury), p-CRMP-2 and CRMP-2 were measured at postnatal days 0, 1and 3 (P0, P1, and P3, respectively). As an antagonist of the bone morphgenetic proteins (BMP) receptor, DMH1 was co-administered with sevoflurane plus Dex to investigate whether BMP/SMAD is associated with the neuroprotective effects of Dex. The results showed that prenatal sevoflurane anesthesia for 4 h activated apoptosis transiently, as manifested by the caspase3 activity peaked on P1 and disappeared on P3. In addition, the expressions of APP and p-CRMP-2/CRMP-2 in postnatal rat hippocampus were significantly increased, which revealed that prenatal sevoflurane anesthesia caused axonal injury of offspring. The long-term learning and memory ability of offspring rats was also impaired after prenatal sevoflurane anesthesia. These damaging effects of sevoflurane could be mitigated by Dex and DMH1 reversed the neuroprotective effect of Dex. Our results indicated that prenatal exposure to 3% sevoflurane for 4 h increased apoptosis and axonal injury, even caused long-term learning and memory dysfunction in the offspring rats. Dex dose-dependently reduced sevoflurane- anesthesia-induced the neurotoxicity by activating the BMP/SMAD signaling pathway.
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Affiliation(s)
- Yangyang Shan
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Fan Yang
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Zhiyin Tang
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Congjie Bi
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Shiwei Sun
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Yongfang Zhang
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Hongtao Liu
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
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Estrogen and propofol combination therapy inhibits endoplasmic reticulum stress and remarkably attenuates cerebral ischemia-reperfusion injury and OGD injury in hippocampus. Biomed Pharmacother 2018; 108:1596-1606. [PMID: 30372862 DOI: 10.1016/j.biopha.2018.09.167] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 01/06/2023] Open
Abstract
AIM Endoplasmic reticulum stress (ERS) is vital in inducing apoptosis via caspase-12 and C/EBP homologous protein (CHOP) apoptotic pathway in the hippocampus after ischemia-reperfusion injury. The study aimed to estimate the efficacy of estrogen and propofol combination therapy against ERS-induced apoptosis after cerebral ischemia-reperfusion injury and oxygen-glucose deprivation (OGD) injury in the hippocampus in vivo and in vitro. METHODS Rat model of cerebral ischemia-reperfusion injury was generated by middle cerebral artery occlusion (MCAO) strategy with ischemic intervention for 90 min and reperfusion for 24 h. Propofol processing ischemia-reperfusion group (Propofol group) infused 50 mg/kg/h of propofol via the femoral vein at the onset of reperfusion for 30 min. Estrogen processing ischemia-reperfusion group (estrogen group) received 0.0125 mg/kg of estrogen via tail vein at 30 min prior to MCAO. Combination therapy for ischemia-reperfusion group (combination group) received simultaneous processing with propofol and estrogen. In vitro, brain slices were randomly exposed to dimethylsulfoxide (DSMO), 10 μm of propofol, 10 nm of estrogen, or propofol and estrogen. Changes in the orthodromic population spike (OPS) at the end of reoxygenation were recorded. Neurological deficit examination, Nissl staining, and 2,3,5-triphenyltetrazolium chloride (TTC) staining were employed to evaluate the level of cerebral ischemia-reperfusion injury. The expression of caspase-3, caspase-12, glucose-regulated protein 78 (GRP78), and CHOP were investigated by Western blot and immunofluorescence staining assays. Neural apoptotic rate in hippocampus was detected by the flow cytometry trial. RESULTS Neurological deficit score, infarct volume, the expression of caspase-3 (P < 0.05), caspase-12, GRP78, CHOP, and neural apoptotic rate of I/R group increased markedly (P < 0.01). When obtaining drug treatment, neurological deficit score (P < 0.05), infarct volume, the expression levels of caspase-12 and GRP78, and neural apoptotic rate of the propofol group decreased significantly (P < 0.01). Furthermore, neurological deficit score, infarct volume, expression levels of caspase-3, caspase-12, GRP78, and CHOP (P < 0.05), and neural apoptotic rate decreased in the estrogen group (P < 0.01) and especially in the combination group (P < 0.01). Compared with the propofol group, the neurological deficit score (P < 0.05), infarct volume, caspase-3, caspase-12, GRP78, CHOP, and neural apoptotic rate of the combination group decreased (P < 0.01). Compared with the estrogen group, the infarct volume, caspase-3 (P < 0.05), GRP78, CHOP, and neural apoptotic rate (P < 0.05) of the combination group decreased (P < 0.01). Compared with the propofol group, the infarct volume, caspase-3, caspase-12 (P < 0.05), and GRP78 (P < 0.05) of the estrogen group decreased (P < 0.01). Propofol and estrogen treatment can delay the abolishing time of OPS and increase the recovery rate and amplitude of OPS, compared with OGD group (P < 0.01), especially in the combination therapy (P < 0.01). CONCLUSION The neuroprotection of propofol and estrogen combination therapy inhibited excessive ERS-induced apoptosis against cerebral ischemia-reperfusion injury and OGD injury in the hippocampus of rats. Furthermore, the outcomes demonstrated that combination therapy yielded synergistic effects.
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