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Ding C, Wu Y, Zhan C, Naseem A, Chen L, Li H, Yang B, Liu Y. Research progress on the role and inhibitors of Keap1 signaling pathway in inflammation. Int Immunopharmacol 2024; 141:112853. [PMID: 39159555 DOI: 10.1016/j.intimp.2024.112853] [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: 06/18/2024] [Revised: 07/23/2024] [Accepted: 07/30/2024] [Indexed: 08/21/2024]
Abstract
Inflammation is a protective mechanism against endogenous and exogenous pathogens. It is a typical feature of numerous chronic diseases and their complications. Keap1 is an essential target in oxidative stress and inflammatory diseases. Among them, the Keap1-Nrf2-ARE pathway (including Keap1-Nrf2-HO-1) is the most significant pathway of Keap1 targets, which participates in the control of inflammation in multiple organs (including renal inflammation, lung inflammation, liver inflammation, neuroinflammation, etc.). Identifying new Keap1 inhibitors is crucial for new drug discovery. However, most drugs have specificity issues as they covalently bind to cysteine residues of Keap1, causing off-target effects. Therefore, direct inhibition of Keap1-Nrf2 PPIs is a new research idea. Through non-electrophilic and non-covalent binding, its inhibitors have better specificity and ability to activate Nrf2, and targeting therapy against Keap1-Nrf2 PPIs has become a new method for drug development in chronic diseases. This review summarizes the members and downstream genes of the Keap1-related pathway and their roles in inflammatory disease models. In addition, we summarize all the research progress of anti-inflammatory drugs targeting Keap1 from 2010 to 2024, mainly describing their biological functions, molecular mechanisms of action, and therapeutic roles in inflammatory diseases.
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Affiliation(s)
- Chao Ding
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China.
| | - Ying Wu
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Chaochao Zhan
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China.
| | - Anam Naseem
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China.
| | - Lixia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Hua Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China; Institute of Structural Pharmacology & TCM Chemical Biology, College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China.
| | - Bingyou Yang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China.
| | - Yan Liu
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China.
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2
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Zhang J, Zhang Z, Wang X, Liu Y, Yu Q, Wang K, Fang Y, Lenahan C, Chen M, Chen S. Connection between oxidative stress and subcellular organelle in subarachnoid hemorrhage: Novel mechanisms and therapeutic implications. CNS Neurosci Ther 2023; 29:3672-3683. [PMID: 37408392 PMCID: PMC10651993 DOI: 10.1111/cns.14348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/12/2023] [Accepted: 06/24/2023] [Indexed: 07/07/2023] Open
Abstract
Spontaneous subarachnoid hemorrhage (SAH) is one of the most devastating forms of stroke, with limited treatment modalities and poor patient outcomes. Previous studies have proposed multiple prognostic factors; however, relative research on treatment has not yet yielded favorable clinical outcomes. Moreover, recent studies have suggested that early brain injury (EBI) occurring within 72 h after SAH may contribute to its poor clinical outcomes. Oxidative stress is recognized as one of the main mechanisms of EBI, which causes damage to various subcellular organelles, including the mitochondria, nucleus, endoplasmic reticulum (ER), and lysosomes. This could lead to significant impairment of numerous cellular functions, such as energy supply, protein synthesis, and autophagy, which may directly contribute to the development of EBI and poor long-term prognostic outcomes. In this review, the mechanisms underlying the connection between oxidative stress and subcellular organelles after SAH are discussed, and promising therapeutic options based on these mechanisms are summarized.
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Affiliation(s)
- Jiahao Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
| | - Zeyu Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Xiaoyu Wang
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
| | - Yibo Liu
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
| | - Qian Yu
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
| | - Kaikai Wang
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
| | - Yuanjian Fang
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
| | - Cameron Lenahan
- Center for Neuroscience ResearchLoma Linda University School of MedicineLoma LindaCaliforniaUSA
| | - Maohua Chen
- Department of Neurosurgery, Wenzhou Central HospitalAffiliated Dingli Clinical Institute of Wenzhou Medical UniversityWenzhouChina
| | - Sheng Chen
- Department of Neurosurgery, The Second Affiliated Hospital, School of MedicineZhejiang UniversityHangzhouChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
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Zhou L, Jia R, Zeng W, Cai Q, Qu Y. Study on the Difference of Protective Efficacy and Mechanism of Radix Aconiti Coreani and Rhizoma Typhonii in Gerbils with Ischemic Stroke. ACS Chem Neurosci 2023; 14:3686-3693. [PMID: 37698590 DOI: 10.1021/acschemneuro.3c00299] [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] [Indexed: 09/13/2023] Open
Abstract
Ischemic stroke is a common type of stroke, but effective treatment methods are still imperfect and new effective therapies need to be explored. Radix Aconiti Coreani and Rhizoma Typhonii used as Baifuzi in the treatment of stroke or symptoms associated with stroke have been recorded in ancient Chinese books and are widely used. Modern pharmacological studies have demonstrated that both of them have antioxidant and anti-inflammatory effects. The purpose of this study is to investigate whether Radix Aconiti Coreani and Rhizoma Typhonii have therapeutical effects on gerbils with ischemic stroke, to investigate their potential mechanisms of action, and to provide a reference for rational clinical application by comparing the differences between them. In this manuscript, the right unilateral ligation of the carotid artery of gerbils was used to cause an ischemic stroke model. The neurological deficits of gerbils in each group were scored by Longa scale. The area of cerebral infarction was detected by 2,3,5-tribenzotetrazolchloride staining. The levels of inflammatory factors, oxidative stress indexes, and vascular endothelial function indexes in brain homogenate and serum were determined by ELISA. The expression levels of P-Akt PI3K, HO-1, and KEAP1 proteins in brain tissue were determined by Western blot. Immunofluorescence staining was used to observe the recovery of neuronal cells in the hippocampal CA1 region of the gerbil brain tissue and the expression of proteins related to PI3K/Akt and KEAP1/Nrf2 signaling pathways in neuronal cells in the hippocampal CA1 region. It was found that Radix Aconiti Coreani and Rhizoma Typhonii could improve neurological deficits and reduce cerebral infarction rate in gerbils. The results showed that Radix Aconiti Coreani and Rhizoma Typhonii could significantly decrease the expression of inflammatory factors, increase the expression of antioxidative stress indexes and vascular endothelial function factors, activate the PI3K/Akt, KEAP1/Nrf2 signaling pathway, reduce the inflammatory response, inhibit the oxidative stress, enhance the vascular endothelial cell function, and thus protect against ischemic brain injury. From the experimental results, both Radix Aconiti Coreani and Rhizoma Typhonii had neuroprotective effects on ischemic brain injury. Compared with Rhizoma Typhonii, the effects of Radix Aconiti Coreani on anti-inflammatory and antioxidative stress were more significant, while Rhizoma Typhonii had showed more significant effects in promoting angiogenesis after ischemic stroke by increasing the level of NO.
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Affiliation(s)
- Liting Zhou
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, Liaoning 116600, China
| | - Ru Jia
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, Liaoning 116600, China
| | - Wanting Zeng
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, Liaoning 116600, China
| | - Qian Cai
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, Liaoning 116600, China
| | - Yang Qu
- College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, Liaoning 116600, China
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4
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Lei K, Wu R, Wang J, Lei X, Zhou E, Fan R, Gong L. Sirtuins as Potential Targets for Neuroprotection: Mechanisms of Early Brain Injury Induced by Subarachnoid Hemorrhage. Transl Stroke Res 2023:10.1007/s12975-023-01191-z. [PMID: 37779164 DOI: 10.1007/s12975-023-01191-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/26/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023]
Abstract
Subarachnoid hemorrhage (SAH) is a prevalent cerebrovascular disease with significant global mortality and morbidity rates. Despite advancements in pharmacological and surgical approaches, the quality of life for SAH survivors has not shown substantial improvement. Traditionally, vasospasm has been considered a primary contributor to death and disability following SAH, but anti-vasospastic therapies have not demonstrated significant benefits for SAH patients' prognosis. Emerging studies suggest that early brain injury (EBI) may play a crucial role in influencing SAH prognosis. Sirtuins (SIRTs), a group of NAD + -dependent deacylases comprising seven mammalian family members (SIRT1 to SIRT7), have been found to be involved in neural tissue development, plasticity, and aging. They also exhibit vital functions in various central nervous system (CNS) processes, including cognition, pain perception, mood, behavior, sleep, and circadian rhythms. Extensive research has uncovered the multifaceted roles of SIRTs in CNS disorders, offering insights into potential markers for pathological processes and promising therapeutic targets (such as SIRT1 activators and SIRT2 inhibitors). In this article, we provide an overview of recent research progress on the application of SIRTs in subarachnoid hemorrhage and explore their underlying mechanisms of action.
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Affiliation(s)
- Kunqian Lei
- Department of Neurosurgery, Affiliated Hospital of Zunyi Medical University CN, Zunyi, China
| | - Rui Wu
- Department of Neurosurgery, Affiliated Hospital of Zunyi Medical University CN, Zunyi, China
| | - Jin Wang
- Department of Neurology, Affiliated Hospital of Zunyi Medical University CN, Zunyi, China
| | - Xianze Lei
- Department of Neurology, Affiliated Hospital of Zunyi Medical University CN, Zunyi, China
| | - Erxiong Zhou
- Department of Neurosurgery, Affiliated Hospital of Zunyi Medical University CN, Zunyi, China
| | - Ruiming Fan
- Department of Neurosurgery, Affiliated Hospital of Zunyi Medical University CN, Zunyi, China.
| | - Lei Gong
- Department of Pharmacy, Institute of Medical Biotechnology, Affiliated Hospital of Zunyi Medical University CN, Zunyi, China.
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5
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Bresciani G, Manai F, Davinelli S, Tucci P, Saso L, Amadio M. Novel potential pharmacological applications of dimethyl fumarate-an overview and update. Front Pharmacol 2023; 14:1264842. [PMID: 37745068 PMCID: PMC10512734 DOI: 10.3389/fphar.2023.1264842] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 08/18/2023] [Indexed: 09/26/2023] Open
Abstract
Dimethyl fumarate (DMF) is an FDA-approved drug for the treatment of psoriasis and multiple sclerosis. DMF is known to stabilize the transcription factor Nrf2, which in turn induces the expression of antioxidant response element genes. It has also been shown that DMF influences autophagy and participates in the transcriptional control of inflammatory factors by inhibiting NF-κB and its downstream targets. DMF is receiving increasing attention for its potential to be repurposed for several diseases. This versatile molecule is indeed able to exert beneficial effects on different medical conditions through a pleiotropic mechanism, in virtue of its antioxidant, immunomodulatory, neuroprotective, anti-inflammatory, and anti-proliferative effects. A growing number of preclinical and clinical studies show that DMF may have important therapeutic implications for chronic diseases, such as cardiovascular and respiratory pathologies, cancer, eye disorders, neurodegenerative conditions, and systemic or organ specific inflammatory and immune-mediated diseases. This comprehensive review summarizes and highlights the plethora of DMF's beneficial effects and underlines its repurposing opportunities in a variety of clinical conditions.
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Affiliation(s)
- Giorgia Bresciani
- Section of Pharmacology, Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Federico Manai
- Department of Biology and Biotechnology L. Spallanzani, University of Pavia, Pavia, Italy
| | - Sergio Davinelli
- Department of Medicine and Health Sciences “V. Tiberio”, University of Molise, Campobasso, Italy
| | - Paolo Tucci
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Luciano Saso
- Department of Physiology and Pharmacology Vittorio Erspamer, Sapienza University, Rome, Italy
| | - Marialaura Amadio
- Section of Pharmacology, Department of Drug Sciences, University of Pavia, Pavia, Italy
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6
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Owjfard M, Karimi F, Mallahzadeh A, Nabavizadeh SA, Namavar MR, Saadi MI, Hooshmandi E, Salehi MS, Zafarmand SS, Bayat M, Karimlou S, Borhani-Haghighi A. Mechanism of action and therapeutic potential of dimethyl fumarate in ischemic stroke. J Neurosci Res 2023. [PMID: 37183360 DOI: 10.1002/jnr.25202] [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: 12/10/2022] [Revised: 04/09/2023] [Accepted: 04/21/2023] [Indexed: 05/16/2023]
Abstract
Dimethyl fumarate (DMF) is an immunomodulatory drug currently approved for the treatment of multiple sclerosis and psoriasis. Its benefits on ischemic stroke outcomes have recently come to attention. To date, only tissue plasminogen activators (tPAs) and clot retrieval methods have been approved by the FDA for the treatment of ischemic stroke. Ischemic conditions lead to inflammation through diverse mechanisms, and recanalization can worsen the state. DMF and the nuclear factor erythroid-derived 2-related factor 2 (Nrf2) pathway it regulates seem to be important in postischemic inflammation, and animal studies have demonstrated that the drug improves overall stroke outcomes. Although the exact mechanism is still unknown, studies indicate that these beneficial impacts are due to the modulation of immune responses, blood-brain barrier permeability, and hemodynamic adjustments. One major component evaluated before, during, and after tPA therapy in stroke patients is blood pressure (BP). Recent studies have found that DMF may impact BP. Both hypotension and hypertension need correction before treatment, which may delay the appropriate intervention. Since BP management is crucial in managing stroke patients, it is important to consider DMF's role in this matter. That being said, it seems further investigations on DMF may lead to an alternative approach for stroke patients. In this article, we discuss the mechanistic roles of DMF and its potential role in stroke based on previously published literature and laboratory findings.
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Affiliation(s)
- Maryam Owjfard
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Shiraz University of Applied Science and Technology (UAST), Shiraz, Iran
| | | | - Arashk Mallahzadeh
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed Ali Nabavizadeh
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Reza Namavar
- Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Etrat Hooshmandi
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Saied Salehi
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Mahnaz Bayat
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sedigheh Karimlou
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Chhabra S, Mehan S. Matrine exerts its neuroprotective effects by modulating multiple neuronal pathways. Metab Brain Dis 2023; 38:1471-1499. [PMID: 37103719 DOI: 10.1007/s11011-023-01214-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/10/2023] [Indexed: 04/28/2023]
Abstract
Recent evidence suggests that misfolding, clumping, and accumulation of proteins in the brain may be common causes and pathogenic mechanism for several neurological illnesses. This causes neuronal structural deterioration and disruption of neural circuits. Research from various fields supports this idea, indicating that developing a single treatment for several severe conditions might be possible. Phytochemicals from medicinal plants play an essential part in maintaining the brain's chemical equilibrium by affecting the proximity of neurons. Matrine is a tetracyclo-quinolizidine alkaloid derived from the plant Sophora flavescens Aiton. Matrine has been shown to have a therapeutic effect on Multiple Sclerosis, Alzheimer's disease, and various other neurological disorders. Numerous studies have demonstrated that matrine protects neurons by altering multiple signalling pathways and crossing the blood-brain barrier. As a result, matrine may have therapeutic utility in the treatment of a variety of neurocomplications. This work aims to serve as a foundation for future clinical research by reviewing the current state of matrine as a neuroprotective agent and its potential therapeutic application in treating neurodegenerative and neuropsychiatric illnesses. Future research will answer many concerns and lead to fascinating discoveries that could impact other aspects of matrine.
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Affiliation(s)
- Swesha Chhabra
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India.
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8
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Pharmacological Modulations of Nrf2 and Therapeutic Implications in Aneurysmal Subarachnoid Hemorrhage. Molecules 2023; 28:molecules28041747. [PMID: 36838735 PMCID: PMC9963186 DOI: 10.3390/molecules28041747] [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: 12/31/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023] Open
Abstract
An aneurysmal subarachnoid hemorrhage (aSAH) is a subtype of stroke with high morbidity and mortality. The main causes of a poor prognosis include early brain injury (EBI) and delayed vasospasm, both of which play a significant role in the pathophysiological process. As an important mechanism of EBI and delayed vasospasm, oxidative stress plays an important role in the pathogenesis of aSAH by producing reactive oxygen species (ROS) through the mitochondria, hemoglobin, or enzymatic pathways in the early stages of aSAH. As a result, antioxidant therapy, which primarily targets the Nrf2-related pathway, can be employed as a potential strategy for treating aSAH. In the early stages of aSAH development, increasing the expression of antioxidant enzymes and detoxifying enzymes can relieve oxidative stress, reduce brain damage, and improve prognosis. Herein, the regulatory mechanisms of Nrf2 and related pharmacological compounds are reviewed, and Nrf2-targeted drugs are proposed as potential treatments for aSAH.
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Zhou J, Shen R, Makale EC, Zhong W, Chen Z, Huang Q. SS31 Confers Cerebral Protection by Reversing Mitochondrial Dysfunction in Early Brain Injury Following Subarachnoid Hemorrhage, via the Nrf2- and PGC-1α-Dependent Pathways. Neurochem Res 2022; 48:1580-1595. [PMID: 36574150 DOI: 10.1007/s11064-022-03850-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 12/18/2022] [Accepted: 12/19/2022] [Indexed: 12/29/2022]
Abstract
In early brain injury (EBI), oxidative stress occurs following subarachnoid hemorrhage (SAH), and mitochondria are intricately linked to this process. SS31, a mitochondria-targeting antioxidative peptide, has been demonstrated to be beneficial for multiple diseases because of its powerful antioxidant and neuroprotective properties. Although our previous study revealed that SS31 was involved in the powerful antioxidant effect following SAH, the underlying molecular mechanisms remained unclear. Thus, our study aimed to investigate the neuroprotective effects of SS31 by reversing mitochondrial dysfunction in EBI following SAH, via activating the Nrf2 signaling and PGC-1α pathways. Our findings confirmed that SS31 ameliorated SAH-triggered oxidative insult. SS31 administration decreased redundant reactive oxygen species, alleviated lipid peroxidation, and elevated the activities of antioxidant enzymes. Concomitant with the inhibited oxidative insult, SS31 dramatically attenuated neurological deficits, cerebral edema, neural apoptosis, and blood-brain barrier disruption following SAH. Moreover, SS31 remarkably promoted nuclear factor-erythroid 2 related factor 2 (Nrf2) nuclear shuttle and upregulated the expression levels of heme oxygenase-1 and NADPH: quinine oxidoreductase1. Additionally, SS31 enhanced the expression levels of PGC-1α and its target genes, and increased the mtDNA copy number, promoting mitochondrial function. However, PGC-1α-specific inhibitor SR-18292 pretreatment dramatically suppressed SS31-induced Nrf2 expression and PGC-1α activation. Furthermore, pretreatment with SR-18292 reversed the neuroprotective and antioxidant roles of SS31. These significant beneficial effects were associated with the activation of the Nrf2 signaling and PGC-1α pathways and were antagonized by SR-18292 administration. Our findings reveal that SS31 exhibits its neuroprotective activity by reversing mitochondrial dysfunction via activating the Nrf2 signaling pathway, which could be mediated through PGC-1α activation.
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Affiliation(s)
- Jian Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Hainan Medical University, 31 Longhua Road, Haikou, 570102, Hainan Province, China
| | - Ruiming Shen
- Department of Rheumatology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Emmanuel C Makale
- Department of General Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Wangwang Zhong
- Department of Neurosurgery, The First Affiliated Hospital of Hainan Medical University, 31 Longhua Road, Haikou, 570102, Hainan Province, China
| | - Zhenggang Chen
- Department of Neurosurgery, The First Affiliated Hospital of Hainan Medical University, 31 Longhua Road, Haikou, 570102, Hainan Province, China
| | - Qiuhu Huang
- Department of Neurosurgery, The First Affiliated Hospital of Hainan Medical University, 31 Longhua Road, Haikou, 570102, Hainan Province, China.
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10
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Oxidative Stress and Intracranial Hypertension after Aneurysmal Subarachnoid Hemorrhage. Antioxidants (Basel) 2022; 11:antiox11122423. [PMID: 36552631 PMCID: PMC9774559 DOI: 10.3390/antiox11122423] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/25/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Intracranial hypertension is a common phenomenon in patients with aneurysmal subarachnoid hemorrhage (aSAH). Elevated intracranial pressure (ICP) plays an important role in early brain injuries and is associated with unfavorable outcomes. Despite advances in the management of aSAH, there is no consensus about the mechanisms involved in ICP increases after aSAH. Recently, a growing body of evidence suggests that oxidative stress (OS) may play a crucial role in physio-pathological changes following aSAH, which may also contribute to increased ICP. Herein, we discuss a potential relation between increased ICP and OS, and resultantly propose antioxidant mechanisms as a potential therapeutic strategy for the treatment of ICP elevation following aSAH.
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11
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Jin J, Duan J, Du L, Xing W, Peng X, Zhao Q. Inflammation and immune cell abnormalities in intracranial aneurysm subarachnoid hemorrhage (SAH): Relevant signaling pathways and therapeutic strategies. Front Immunol 2022; 13:1027756. [PMID: 36505409 PMCID: PMC9727248 DOI: 10.3389/fimmu.2022.1027756] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022] Open
Abstract
Intracranial aneurysm subarachnoid hemorrhage (SAH) is a cerebrovascular disorder associated with high overall mortality. Currently, the underlying mechanisms of pathological reaction after aneurysm rupture are still unclear, especially in the immune microenvironment, inflammation, and relevant signaling pathways. SAH-induced immune cell population alteration, immune inflammatory signaling pathway activation, and active substance generation are associated with pro-inflammatory cytokines, immunosuppression, and brain injury. Crosstalk between immune disorders and hyperactivation of inflammatory signals aggravated the devastating consequences of brain injury and cerebral vasospasm and increased the risk of infection. In this review, we discussed the role of inflammation and immune cell responses in the occurrence and development of aneurysm SAH, as well as the most relevant immune inflammatory signaling pathways [PI3K/Akt, extracellular signal-regulated kinase (ERK), hypoxia-inducible factor-1α (HIF-1α), STAT, SIRT, mammalian target of rapamycin (mTOR), NLRP3, TLR4/nuclear factor-κB (NF-κB), and Keap1/nuclear factor (erythroid-derived 2)-like 2 (Nrf2)/ARE cascades] and biomarkers in aneurysm SAH. In addition, we also summarized potential therapeutic drugs targeting the aneurysm SAH immune inflammatory responses, such as nimodipine, dexmedetomidine (DEX), fingolimod, and genomic variation-related aneurysm prophylactic agent sunitinib. The intervention of immune inflammatory responses and immune microenvironment significantly reduces the secondary brain injury, thereby improving the prognosis of patients admitted to SAH. Future studies should focus on exploring potential immune inflammatory mechanisms and developing additional therapeutic strategies for precise aneurysm SAH immune inflammatory regulation and genomic variants associated with aneurysm formation.
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Affiliation(s)
- Jing Jin
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan, China,Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jian Duan
- Department of Cerebrovascular Disease, Suining Central Hospital, Suining, Sichuan, China
| | - Leiya Du
- 4Department of Oncology, The Second People Hospital of Yibin, Yibin, Sichuan, China
| | - Wenli Xing
- Department of Cerebrovascular Disease, Suining Central Hospital, Suining, Sichuan, China
| | - Xingchen Peng
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China,*Correspondence: Qijie Zhao, ; Xingchen Peng,
| | - Qijie Zhao
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan, China,*Correspondence: Qijie Zhao, ; Xingchen Peng,
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12
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Sauerland MB, Davies MJ. Electrophile versus oxidant modification of cysteine residues: Kinetics as a key driver of protein modification. Arch Biochem Biophys 2022; 727:109344. [PMID: 35777524 DOI: 10.1016/j.abb.2022.109344] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/09/2022] [Accepted: 06/26/2022] [Indexed: 01/27/2023]
Abstract
Humans have widespread exposure to both oxidants, and soft electrophilic compounds such as alpha,beta-unsaturated aldehydes and quinones. Electrophilic motifs are commonly found in a drugs, industrial chemicals, pollutants and are also generated via oxidant-mediated degradation of biomolecules including lipids (e.g. formation of 4-hydroxynonenal, 4-hydroxyhexenal, prostaglandin J2). All of these classes of compounds react efficiently with Cys residues, and the particularly the thiolate anion, with this resulting in Cys modification via either oxidation or adduct formation. This can result in deleterious or beneficial effects, that are either reversible (e.g. in cell signalling) or irreversible (damaging). For example, acrolein is a well-established toxin, whereas dimethylfumarate is used in the treatment of multiple sclerosis and psoriasis. This short review discusses the targets of alpha,beta-unsaturated aldehydes, and particularly two prototypic cases, acrolein and dimethylfumarate, and the factors that control the selectivity and kinetics of reaction of these species. Comparison is made between the reactivity of oxidants versus soft electrophiles. These rate constants indicate that electrophiles can be significant thiol modifying agents in some situations, as they have rate constants similar to or greater than species such as H2O2, can be present at higher concentrations, and are less efficiently removed by protective systems when compared to H2O2. They may also induce similar or higher levels of modification than highly reactive oxidants, due to the very low concentrations of oxidants formed in most in vivo situations.
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Affiliation(s)
- Max B Sauerland
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark.
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The Role of the NRF2 Pathway in Maintaining and Improving Cognitive Function. Biomedicines 2022; 10:biomedicines10082043. [PMID: 36009590 PMCID: PMC9405981 DOI: 10.3390/biomedicines10082043] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/10/2022] [Accepted: 08/17/2022] [Indexed: 11/24/2022] Open
Abstract
Nuclear factor (erythroid-derived 2)-like 2 (NRF2) is a redox-sensitive transcription factor that binds to the antioxidant response element consensus sequence, decreasing reactive oxygen species and regulating the transcription of a wide array of genes, including antioxidant and detoxifying enzymes, regulating genes involved in mitochondrial function and biogenesis. Moreover, NRF2 has been shown to directly regulate the expression of anti-inflammatory mediators reducing the expression of pro-inflammatory cytokines. In recent years, attention has turned to the role NRF2 plays in the brain in different diseases such Alzheimer’s disease, Parkinson’s disease, Huntington’s disease and others. This review focused on the evidence, derived in vitro, in vivo and from clinical trials, supporting a role for NRF2 activation in maintaining and improving cognitive function and how its activation can be used to elicit neuroprotection and lead to cognitive enhancement. The review also brings a critical discussion concerning the possible prophylactic and/or therapeutic use of NRF2 activators in treating cognitive impairment-related conditions.
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Pan H, Wang Y, Wang X, Yan C. Dimethyl fumarate improves cognitive impairment by enhancing hippocampal brain-derived neurotrophic factor levels in hypothyroid rats. BMC Endocr Disord 2022; 22:188. [PMID: 35869475 PMCID: PMC9306081 DOI: 10.1186/s12902-022-01086-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 06/23/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Dimethyl fumarate (DMF) is an effective drug for multiple sclerosis and can improve the cognitive dysfunction caused by streptozotocin, but the effect on cognitive dysfunction caused by hypothyroidism is unclear. METHODS After the hypothyroidism rat model induced by propylthiouracil, we gave rats 25 mg/kg DMF by gavage. The body weight during model building and administration was recorded. The levels of T4 and T3 in serum were detected by an automatic biochemical analyzer. Morris water maze test was used to detect the effect of DMF on cognitive learning ability. The effect of DMF on Nissl bodies in the brain tissue was evaluated by Nissl staining. The mRNA and protein levels of BDNF in brain tissue were detected by quantitative reverse transcription-polymerase chain reaction and Western blot. The degrees of p-AKT/AKT and p-CREB/CREB in brain tissue were detected by Western blot. RESULTS After DMF treatment, the body weight of hypothyroid rats recovered, and the levels of T3 and T4 in the serum were ameliorated. DMF also reduced the escape latency and distance traveled, and increased the swim speed. The number of Nissl bodies and expression of BDNF, p-AKT/AKT, and p-CREB/CREB in the brain tissue were increased after DMF treatment. CONCLUSION DMF improved the cognitive dysfunction of hypothyroid rats by increasing the level of BDNF in the brain tissue of hypothyroid rats.
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Affiliation(s)
- Haiyan Pan
- Department of Endocrinology, The Third Affiliated Hospital of Zhejiang Chinese Medicine University, Hangzhou, 310000, China
| | - Yanbo Wang
- Department of Endocrinology, The Third Affiliated Hospital of Zhejiang Chinese Medicine University, Hangzhou, 310000, China
| | - Xiaowei Wang
- Department of Endocrinology, The Third Affiliated Hospital of Zhejiang Chinese Medicine University, Hangzhou, 310000, China
| | - Ci Yan
- Departments of Psychiatry, Affiliated Mental Health Center, Zhejiang University School of Medicine, Hangzhou, 310000, China.
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Zhang Z, Zhang A, Liu Y, Hu X, Fang Y, Wang X, Luo Y, Lenahan C, Chen S. New Mechanisms and Targets of Subarachnoid Hemorrhage: A Focus on Mitochondria. Curr Neuropharmacol 2022; 20:1278-1296. [PMID: 34720082 PMCID: PMC9881073 DOI: 10.2174/1570159x19666211101103646] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/06/2021] [Accepted: 10/28/2021] [Indexed: 11/22/2022] Open
Abstract
Spontaneous subarachnoid hemorrhage (SAH) accounts for 5-10% of all strokes and is a subtype of hemorrhagic stroke that places a heavy burden on health care. Despite great progress in surgical clipping and endovascular treatment for ruptured aneurysms, cerebral vasospasm (CVS) and delayed cerebral ischemia (DCI) threaten the long-term outcomes of patients with SAH. Moreover, there are limited drugs available to reduce the risk of DCI and adverse outcomes in SAH patients. New insight suggests that early brain injury (EBI), which occurs within 72 h after the onset of SAH, may lay the foundation for further DCI development and poor outcomes. The mechanisms of EBI mainly include excitotoxicity, oxidative stress, neuroinflammation, blood-brain barrier (BBB) destruction, and cellular death. Mitochondria are a double-membrane organelle, and they play an important role in energy production, cell growth, differentiation, apoptosis, and survival. Mitochondrial dysfunction, which can lead to mitochondrial membrane potential (Δψm) collapse, overproduction of reactive oxygen species (ROS), release of apoptogenic proteins, disorders of mitochondrial dynamics, and activation of mitochondria-related inflammation, is considered a novel mechanism of EBI related to DCI as well as post-SAH outcomes. In addition, mitophagy is activated after SAH. In this review, we discuss the latest perspectives on the role of mitochondria in EBI and DCI after SAH. We emphasize the potential of mitochondria as therapeutic targets and summarize the promising therapeutic strategies targeting mitochondria for SAH.
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Affiliation(s)
- Zeyu Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; ,These authors contributed equally to this work.
| | - Anke Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; ,These authors contributed equally to this work.
| | - Yibo Liu
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; ,These authors contributed equally to this work.
| | - Xiaoming Hu
- Department of Neurosurgery, Taizhou Hospital, Taizhou, Zhejiang Province, China;
| | - Yuanjian Fang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China;
| | - Xiaoyu Wang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China;
| | - Yujie Luo
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China;
| | - Cameron Lenahan
- Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Sheng Chen
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China; ,Address correspondence to this author at the Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China; Tel: +86-571-87784815; Fax: +86-571-87784755; E-mail:
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Cycloastragenol Confers Cerebral Protection after Subarachnoid Hemorrhage by Suppressing Oxidative Insults and Neuroinflammation via the SIRT1 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:3099409. [PMID: 35693703 PMCID: PMC9184193 DOI: 10.1155/2022/3099409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/21/2022] [Accepted: 05/03/2022] [Indexed: 12/04/2022]
Abstract
Subarachnoid hemorrhage (SAH) is an acute cerebral vascular disease featured by oxidative insults and neuroinflammation. Cycloastragenol (CAG), the major active component of Astragalus radix, has a wide range of biological functions. However, the potential beneficial effects and the underlying molecular mechanisms of CAG on SAH remain obscure. In the current study, the cerebroprotective effects and mechanism of CAG on SAH were evaluated both in vivo and in vitro. Our results indicated that CAG significantly suppressed SAH-triggered oxidative insults, inflammatory mediators production, microglia activation, and the neutrophil infiltration in the brain. In addition, CAG improved neurological function and ameliorated neuronal apoptosis and degeneration after SAH. In vitro results also revealed the therapeutic effects of CAG on neurons and microglia co-culture system. Mechanistically, CAG treatment upregulated sirtuin 1 (SIRT1) expression, inhibited the levels of FoxO1, nuclear factor-kappa B, and p53 acetylation, and suppressed the subsequent oxidative, inflammatory, and apoptotic pathways. In contrast, inhibiting SIRT1 by pretreatment with Ex527 abrogated the protective actions of CAG both in vivo and in vitro models of SAH. Collectively, our findings indicated that CAG could be a promising and effective drug candidate for SAH.
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Morozzi C, Sauerland M, Gamon LF, Manandhar A, Ulven T, Davies MJ. Synthesis and cellular evaluation of click-chemistry probes to study the biological effects of alpha, beta-unsaturated carbonyls. Redox Biol 2022; 52:102299. [PMID: 35358849 PMCID: PMC8966197 DOI: 10.1016/j.redox.2022.102299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 11/18/2022] Open
Abstract
Humans are commonly exposed to α,β-unsaturated carbonyls as both environmental toxins (e.g. acrolein) and therapeutic drugs (e.g. dimethylfumarate, DMFU, a front-line drug for the treatment of multiple sclerosis and psoriasis). These compounds undergo rapid Michael addition reactions with amine, imidazole and thiol groups on biological targets, with reaction at protein Cys residues being a major reaction pathway. However, the cellular targets of these species (the ‘adductome’) are poorly understood due to the absence of readily identifiable tags or reporter groups (chromophores/fluorophores or antigens) on many α,β-unsaturated carbonyls. Here we report a ‘proof of concept’ study in which we synthesize novel α,β-unsaturated carbonyls containing an alkyne function introduced at remote sites on the α,β-unsaturated carbonyl compounds (e.g. one of the methyl groups of dimethylfumarate). The presence of this tag allows ‘click-chemistry’ to be used to visualize, isolate, enrich and characterize the cellular targets of such compounds. The probes show similar selectivity and reactivity to the parent compounds, and compete for cellular targets, yielding long-lived (stable) adducts that can be visualized in intact cells (such as primary human coronary artery smooth muscle cells), and extracted and enriched for subsequent target analysis. It is shown using this approach that dimethylfumarate forms adducts with multiple intracellular targets including cytoskeletal, organelle and nuclear species, with these including the rate-limiting glycolytic enzyme, glyceraldehyde-3-phosphate dehydrogenase (GAPDH). This approach should be amenable to use with multiple α,β-unsaturated carbonyls and a wide variety of targets containing nucleophilic sites. Humans are widely exposed to α,β-unsaturated carbonyls via drugs and environmental toxins. These compounds react with cellular targets, and particularly Cys residues, via Michael addition. Alkyne tagged derivatives have been synthesized to allow click chemistry detection. These tags allow visualization, extraction, enrichment and identification of adducted proteins. GAPDH reacts with dimethylfumarate, with adducts detected in both the cytosol and nucleus.
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Affiliation(s)
- Chiara Morozzi
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Max Sauerland
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Luke F Gamon
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Asmita Manandhar
- Department of Drug Design and Pharmacology, Jagtvej 162, University of Copenhagen, Copenhagen, 2100, Denmark
| | - Trond Ulven
- Department of Drug Design and Pharmacology, Jagtvej 162, University of Copenhagen, Copenhagen, 2100, Denmark
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark.
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The role of IL-6 in TBI and PTSD, a potential therapeutic target? Clin Neurol Neurosurg 2022; 218:107280. [PMID: 35567833 DOI: 10.1016/j.clineuro.2022.107280] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/15/2022] [Accepted: 05/02/2022] [Indexed: 01/14/2023]
Abstract
This literature review focuses on the role of IL-6 in TBI or PTSD-induced neuroinflammation. While TBI and PTSD are widely prevalent, these diagnoses are particularly common amongst veterans. Given the role of IL-6 in neuroprotection acutely, compared to detrimental chronically, targeting this cytokine at specific time points may be beneficial in modulating neuroinflammation. Current treatments for TBI or PTSD are variably affective. By reviewing the role of IL-6 in these two diagnoses, future studies can focus on therapeutics to treat neuroinflammation and ultimately reduce the devastating impacts of neuroinflammation on cognition in PTSD and TBI.
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Thomas SD, Jha NK, Sadek B, Ojha S. Repurposing Dimethyl Fumarate for Cardiovascular Diseases: Pharmacological Effects, Molecular Mechanisms, and Therapeutic Promise. Pharmaceuticals (Basel) 2022; 15:ph15050497. [PMID: 35631325 PMCID: PMC9143321 DOI: 10.3390/ph15050497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/06/2022] [Accepted: 04/11/2022] [Indexed: 11/16/2022] Open
Abstract
Dimethyl fumarate (DMF) is a small molecule that has been shown to assert potent in vivo immunoregulatory and anti-inflammatory therapeutic actions. The drug has been approved and is currently in use for treating multiple sclerosis and psoriasis in the USA and Europe. Since inflammatory reactions have been significantly implicated in the etiology and progression of diverse disease states, the pharmacological actions of DMF are presently being explored and generalized to other diseases where inflammation needs to be suppressed and immunoregulation is desirable, either as a monotherapeutic agent or as an adjuvant. In this review, we focus on DMF, and present an overview of its mechanism of action while briefly discussing its pharmacokinetic profile. We further discuss in detail its pharmacological uses and highlight its potential applications in the treatment of cardiovascular diseases. DMF, with its unique combination of anti-inflammatory and vasculoprotective effects, has the potential to be repurposed as a therapeutic agent in patients with atherosclerotic cardiovascular disease. The clinical studies mentioned in this review with respect to the beneficial effects of DMF in atherosclerosis involve observations in patients with multiple sclerosis and psoriasis in small cohorts and for short durations. The findings of these studies need to be assessed in larger prospective clinical trials, ideally with a double-blind randomized study design, investigating the effects on cardiovascular endpoints as well as morbidity and mortality. The long-term impact of DMF therapy on cardiovascular diseases also needs to be confirmed.
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Affiliation(s)
- Shilu Deepa Thomas
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates;
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology (SET), Sharda University, Greater Noida 201310, India;
| | - Bassem Sadek
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates;
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Correspondence: (B.S.); (S.O.)
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates;
- Zayed Bin Sultan Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Correspondence: (B.S.); (S.O.)
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Upadhayay S, Mehan S. Targeting Nrf2/HO-1 anti-oxidant signaling pathway in the progression of multiple sclerosis and influences on neurological dysfunctions. BRAIN DISORDERS 2021. [DOI: 10.1016/j.dscb.2021.100019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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21
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Farina M, Vieira LE, Buttari B, Profumo E, Saso L. The Nrf2 Pathway in Ischemic Stroke: A Review. Molecules 2021; 26:5001. [PMID: 34443584 PMCID: PMC8399750 DOI: 10.3390/molecules26165001] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 02/07/2023] Open
Abstract
Ischemic stroke, characterized by the sudden loss of blood flow in specific area(s) of the brain, is the leading cause of permanent disability and is among the leading causes of death worldwide. The only approved pharmacological treatment for acute ischemic stroke (intravenous thrombolysis with recombinant tissue plasminogen activator) has significant clinical limitations and does not consider the complex set of events taking place after the onset of ischemic stroke (ischemic cascade), which is characterized by significant pro-oxidative events. The transcription factor Nuclear factor erythroid 2-related factor 2 (Nrf2), which regulates the expression of a great number of antioxidant and/or defense proteins, has been pointed as a potential pharmacological target involved in the mitigation of deleterious oxidative events taking place at the ischemic cascade. This review summarizes studies concerning the protective role of Nrf2 in experimental models of ischemic stroke, emphasizing molecular events resulting from ischemic stroke that are, in parallel, modulated by Nrf2. Considering the acute nature of ischemic stroke, we discuss the challenges in using a putative pharmacological strategy (Nrf2 activator) that relies upon transcription, translation and metabolically active cells in treating ischemic stroke patients.
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Affiliation(s)
- Marcelo Farina
- Department of Biochemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, Brazil;
| | - Leonardo Eugênio Vieira
- Department of Biochemistry, Federal University of Santa Catarina, 88040-900 Florianópolis, Brazil;
| | - Brigitta Buttari
- Department of Cardiovascular, Endocrine-Metabolic Diseases, and Aging, Italian National Institute of Health, 00161 Rome, Italy; (B.B.); (E.P.)
| | - Elisabetta Profumo
- Department of Cardiovascular, Endocrine-Metabolic Diseases, and Aging, Italian National Institute of Health, 00161 Rome, Italy; (B.B.); (E.P.)
| | - Luciano Saso
- Department of Physiology and Pharmacology “Vittorio Erspamer”, Sapienza University of Rome, 00185 Rome, Italy
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Peterson C, Umoye AO, Puglisi CH, Waldau B. Mechanisms of memory impairment in animal models of nontraumatic intracranial hemorrhage: A systematic review of the literature. BRAIN HEMORRHAGES 2021; 3:77-93. [DOI: 10.1016/j.hest.2021.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
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Mousavi K, Niknahad H, Li H, Jia Z, Manthari RK, Zhao Y, Shi X, Chen Y, Ahmadi A, Azarpira N, Khalvati B, Ommati MM, Heidari R. The activation of nuclear factor-E2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) signaling blunts cholestasis-induced liver and kidney injury. Toxicol Res (Camb) 2021; 10:911-927. [PMID: 34484683 PMCID: PMC8403611 DOI: 10.1093/toxres/tfab073] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/29/2021] [Accepted: 07/08/2021] [Indexed: 12/26/2022] Open
Abstract
Cholestasis is a severe clinical complication that severely damages the liver. Kidneys are also the most affected extrahepatic organs in cholestasis. The pivotal role of oxidative stress has been mentioned in the pathogenesis of cholestasis-induced organ injury. The activation of the nuclear factor-E2-related factor 2 (Nrf2) pathway is involved in response to oxidative stress. The current study was designed to evaluate the potential role of Nrf2 signaling activation in preventing bile acids-induced toxicity in the liver and kidney. Dimethyl fumarate was used as a robust activator of Nrf2 signaling. Rats underwent bile duct ligation surgery and were treated with dimethyl fumarate (10 and 40 mg/kg). Severe oxidative stress was evident in the liver and kidney of cholestatic animals (P < 0.05). On the other hand, the expression and activity of Nrf2 and downstream genes were time-dependently decreased (P < 0.05). Moreover, significant mitochondrial depolarization, decreased ATP levels, and mitochondrial permeabilization were detected in bile duct-ligated rats (P < 0.05). Histopathological alterations included liver necrosis, fibrosis, inflammation and kidney interstitial inflammation, and cast formation. It was found that dimethyl fumarate significantly decreased hepatic and renal injury in cholestatic animals (P < 0.05). Based on these data, the activation of the cellular antioxidant response could serve as an efficient therapeutic option for managing cholestasis-induced organ injury.
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Affiliation(s)
- Khadijeh Mousavi
- Department of Bio-informatics, College of Life Sciences, Shanxi Agricultural University, Taigu, Shanxi 030801, China
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran
| | - Hossein Niknahad
- Department of Bio-informatics, College of Life Sciences, Shanxi Agricultural University, Taigu, Shanxi 030801, China
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran
| | - Huifeng Li
- Shanxi Key Laboratory of Environmental Veterinary Medicine, College of Animal Sciences and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Zhipeng Jia
- Shanxi Key Laboratory of Environmental Veterinary Medicine, College of Animal Sciences and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Ram Kumar Manthari
- Department of Biotechnology, GITAM Institute of Science, Visakhapatnam, Gandhi Institute of Technology and Management, Andhra Pradesh 530045, India
| | - Yangfei Zhao
- Shanxi Key Laboratory of Environmental Veterinary Medicine, College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Xiong Shi
- Shanxi Key Laboratory of Environmental Veterinary Medicine, College of Animal Sciences and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Yuanyu Chen
- Shanxi Key Laboratory of Environmental Veterinary Medicine, College of Animal Sciences and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Asrin Ahmadi
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran
| | - Bahman Khalvati
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj 75919-51176, Iran
| | - Mohammad Mehdi Ommati
- Department of Bio-informatics, College of Life Sciences, Shanxi Agricultural University, Taigu, Shanxi 030801, China
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran
| | - Reza Heidari
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran
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Ma X, Song M, Yan Y, Ren G, Hou J, Qin G, Wang W, Li Z. Albiflorin alleviates cognitive dysfunction in STZ-induced rats. Aging (Albany NY) 2021; 13:18287-18297. [PMID: 34319254 PMCID: PMC8351685 DOI: 10.18632/aging.203274] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 06/14/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND To explore the effect of albiflorin (AL) on streptozotocin (STZ)-induced Alzheimer's disease (AD) in rats. METHODS A mouse model of diabetic encephalopathy was established by intraperitoneal injection of 1%STZ. Step down test and water maze test were used to test the cognitive function of rats. Congo Red Staining was used to detect the distribution of Aβ plaques in the hippocampus of rats. Cytokine levels in serum and hippocampus were measured using ELISA. Serum insulin, oral glucose tolerance (OGTT), serum superoxide dismutase (SOD) activity and malondialdehyde (MDA) content were measured by commercial kits. And the content of Nrf-2/HO-1/HMGB1/NF-kB in the hippocampus of diabetic rats were detected by western blot. RESULTS AND CONCLUSION Compared with the STZ model group, the average escape latency of rats in the AL group in the Morris water maze test was significantly shortened, and the average number of platform crossings and the ratio of distance/total swimming distance in the target quadrant were increased significantly. Staining of tissue sections and ELISA showed a decrease in Aβ plaque density in the hippocampus of rats in the AL group. And serum insulin levels of rats in the ALgroup were significantly reduced and OGTT was improved. In addition, AL could also regulate the Nrf-2/HO-1/HMGB1/NF-kB signal pathway in the hippocampus. Therefore, AL may ameliorate STZ-induced cognitive impairment in rats by regulating oxidative stress and inflammation in the brain.
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Affiliation(s)
- Xiaojun Ma
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Min Song
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Yushan Yan
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Gaofei Ren
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Jingwen Hou
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Guijun Qin
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Wang Wang
- Department of Physiology and Neurobiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Zhizhen Li
- Department of Endocrinology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
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Sauerland M, Mertes R, Morozzi C, Eggler AL, Gamon LF, Davies MJ. Kinetic assessment of Michael addition reactions of alpha, beta-unsaturated carbonyl compounds to amino acid and protein thiols. Free Radic Biol Med 2021; 169:1-11. [PMID: 33819622 DOI: 10.1016/j.freeradbiomed.2021.03.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/23/2021] [Accepted: 03/29/2021] [Indexed: 12/14/2022]
Abstract
Humans have extensive adverse exposure to alpha,beta-unsaturated carbonyl compounds (ABuCs) as these are major toxins in smoke and exhaust fumes, as well as products of lipid peroxidation. In contrast, another ABuC, dimethylfumarate, is used to treat psoriasis and multiple sclerosis. ABuCs undergo Michael adduction with amine, imidazole and thiol groups, with reaction at Cys residues predominating. Here we report rate constants, k2, for ABuCs (acrolein, crotonaldehyde, dimethylfumarate, cyclohex-1-en-2-one, cyclopent-1-en-2-one) with Cys residues present on N-Ac-Cys, GSH, bovine serum albumin, creatine kinase, papain, glyceraldehyde-3-phosphate dehydrogenase, and both wild-type and the C151S mutant of Keap-1. k2 values for N-Ac-Cys and GSH vary by > 250-fold, indicating a marked ABuC structure dependence, with acrolein the most reactive. There is also considerable variation in k2 between protein Cys groups, with these significantly greater than for GSH. A linear inverse correlation for acrolein with the thiol pKa indicates that the thiolate anion is the reactive species. The modest k2 for GSH rationalizes the detection of protein adducts of ABuCs in cells. The k2 values for dimethylfumarate also vary markedly, with the Cys151 residue on Keap-1 being particularly reactive, with the C151S mutant giving a much lower k2 value. The data for crotonaldehyde, dimethylfumarate, and cyclohex-1-en-2-one show little correlation with the Cys pKa values, indicating that steric/electronic interactions, rather than Cys ionization are important. These data indicate that protein Cys residues, and particularly Cys151 on Keap-1, react readily with dimethylfumarate, and this may help rationalize the use of this compound as a therapeutic agent.
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Affiliation(s)
- Max Sauerland
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Ralf Mertes
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Chiara Morozzi
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Aimee L Eggler
- Department of Chemistry, Villanova University, Villanova, PA, 19085, USA
| | - Luke F Gamon
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark
| | - Michael J Davies
- Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, 2200, Denmark.
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Dai W, He QZ, Zhu BQ, Zeng HC. Oxidative stress-mediated apoptosis is involved in bisphenol S-induced reproductive toxicity in male C57BL/6 mice. J Appl Toxicol 2021; 41:1839-1851. [PMID: 34002388 DOI: 10.1002/jat.4170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/26/2021] [Accepted: 03/13/2021] [Indexed: 01/24/2023]
Abstract
The reproductive toxicity of bisphenol S (BPS) in male mammals and its possible mechanism are not clear. We investigated the effects and possible mechanism of action of BPS on adult male C57BL/6 mice. We found that exposure to 200-mg/kg BPS resulted in a significant decrease in the sperm count in the caput/corpus and cauda epididymis, significantly decreased sperm motility, and significantly increased the sperm deformity. Histological evaluation revealed that BPS exposure caused a decrease of spermatozoa in the lumen of seminiferous tubules and a reduction in the proportion of Stage VII or VIII seminiferous tubules in the BPS-treated groups. Furthermore, ultrastructure analysis revealed BPS-induced mitochondrial damage and apoptosis in spermatogenic cells. Moreover, BPS exposure-induced oxidative stress in testicular tissues. Further, dUTP-biotin nick end labeling (TUNEL) assay showed that BPS induced the apoptosis of spermatogenic cells in a dose-dependent manner. BPS also significantly upregulated cleaved caspase-8, cleaved caspase-9, cleaved caspase-3, Fas, and FasL and significantly downregulated the Bcl-2/Bax ratio. These results suggest that BPS-induced oxidative stress in the testis and spermatogenic cell apoptosis potentially impairs spermatogenesis and sperm function, which may be the mechanism of the reproductive toxicity of BPS. The Fas/FasL and mitochondrial signal pathways may be involved in BPS-induced oxidative stress-related apoptosis. These results suggest that BPS-induced oxidative stress in the testis and spermatogenic cell apoptosis potentially impairs spermatogenesis and sperm function, which may be the mechanism of the reproductive toxicity of BPS. The Fas/FasL and mitochondrial signal pathways may be involved in BPS-induced oxidative stress-related apoptosis.
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Affiliation(s)
- Wei Dai
- Department of Preventive Medicine, University of South China, Hengyang, China
| | - Qing-Zhi He
- Department of Occupational and Environmental Health, Guilin Medical University, Guilin, China
| | - Bi-Qi Zhu
- Department of Preventive Medicine, University of South China, Hengyang, China
| | - Huai-Cai Zeng
- Department of Preventive Medicine, University of South China, Hengyang, China.,Department of Occupational and Environmental Health, Guilin Medical University, Guilin, China
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Lal R, Dhaliwal J, Dhaliwal N, Dharavath RN, Chopra K. Activation of the Nrf2/HO-1 signaling pathway by dimethyl fumarate ameliorates complete Freund's adjuvant-induced arthritis in rats. Eur J Pharmacol 2021; 899:174044. [PMID: 33745959 DOI: 10.1016/j.ejphar.2021.174044] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 03/08/2021] [Accepted: 03/15/2021] [Indexed: 12/13/2022]
Abstract
The nuclear factor erythroid 2-related factor (Nrf2) signaling pathway has recently emerged as a novel therapeutic target in treating various diseases. Therefore, the present study aimed to assess the protective role of the Nrf2 activator, dimethyl fumarate (DMF) in the complete Freund's adjuvant (CFA)- induced arthritis model. DMF (25, 50, and 100 mg/kg) and dexamethasone (2 mg/kg) were orally administered for 14 days. Pain-related tests, paw volume, and arthritic scores were measured weekly. Serum TNF-α, IL-1β, cyclic citrullinated peptide (CCP), C-reactive protein (CRP), and rheumatoid factor (RF) levels were estimated. Nitrite, malondialdehyde (MDA), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione (GSH), catalase (CAT), and myeloperoxidase (MPO) levels were also evaluated. NF-κB, Nrf2, HO-1, and COX-2 levels were estimated in the joint tissue. DMF treatment exerted anti-arthritic activity by enhancing the nociceptive threshold, improving arthritis scores, and reducing paw edema. Also, DMF suppressed changes in oxidative stress markers and inflammatory mediators and enhanced Nrf2 and HO-1 levels in CFA-injected rats. These findings indicate that the anti-arthritic activity of DMF may be mediated by the activation of the Nrf2/HO-1 pathway, which reduced oxidative damage and inflammation.
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Affiliation(s)
- Roshan Lal
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Jatinder Dhaliwal
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Navneet Dhaliwal
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Ravinder Naik Dharavath
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Kanwaljit Chopra
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India.
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Bhandari R, Kaur J, Kaur S, Kuhad A. The Nrf2 pathway in psychiatric disorders: pathophysiological role and potential targeting. Expert Opin Ther Targets 2021; 25:115-139. [PMID: 33557652 DOI: 10.1080/14728222.2021.1887141] [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] [Indexed: 12/26/2022]
Abstract
Introduction: All psychiatric disorders exhibit excitotoxicity, mitochondrial dysfunction, inflammation, oxidative stress, and neural damage as their common characteristic. The endogenous nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway is implicated in the defense mechanism against oxidative stress and has a significant role in psychiatric disorders.Areas covered: We explore the role of Nrf2 pathway and its modulators in psychiatric disorders. The literature was searched utilizing various databases such as Embase, Medline, Web of Science, Pub-Med, and Google Scholar from 2010 to 2020. The search included research articles, clinical reports, systematic reviews, and meta-analyses.Expert opinion: Environmental factors and genetic predisposition can be a trigger for the development of psychiatric disorders. Nrf2 downregulates certain inflammatory pathways and upregulates various antioxidant enzymes to maintain a balance. However, its intricate balance with NF-Kβ (Nuclear factor kappa light chain enhancer of activated B cells) and its crosstalk with the transcription factor Nrf2 is critical in severe oxidative stress. Several Nrf2 modulators are now in clinical trials and can help reduce oxidative stress and neuroinflammation. There are immense potential opportunities for these modulators to become a novel therapeutic option.
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Affiliation(s)
- Ranjana Bhandari
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC-Centre of Advanced Study, Panjab University, Chandigarh, India
| | - Japneet Kaur
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC-Centre of Advanced Study, Panjab University, Chandigarh, India
| | - Simerpreet Kaur
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC-Centre of Advanced Study, Panjab University, Chandigarh, India
| | - Anurag Kuhad
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC-Centre of Advanced Study, Panjab University, Chandigarh, India
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Dhaliwal N, Dhaliwal J, Singh A, Chopra K. Dimethyl fumarate attenuates 2-VO-induced vascular dementia via activating the Nrf2 signaling pathway in rats. Inflammopharmacology 2021; 29:537-547. [PMID: 33459879 DOI: 10.1007/s10787-020-00785-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/04/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Chronic cerebral hypoperfusion (CCH) induced oxidative stress and inflammation is known to be implicated in the pathogenesis of vascular dementia. The nuclear factor erythroid 2-related factor 2 (Nrf2) has emerged as a potential therapeutic target for neuroprotection. In the present study, we investigated the beneficial effects of dimethyl fumarate (DMF), an Nrf2 activator in an experimental model of vascular dementia. METHODS Permanent occlusion of the bilateral common carotid arteries (2-VO) was performed to induce CCH in adult male Sprague-Dawley rats. DMF (15, 30, and 60 mg/kg) was administered for 4 weeks. Cognitive performance was assessed using the Morris water maze (MWM) and novel object (NOR) tests. After behavior tests, various oxidative and inflammatory markers were assessed in the hippocampus. RESULTS The obtained results indicate that treatment with DMF significantly improved 2 VO-induced cognitive deficits. DMF decreased MDA (p < 0.001), protein carbonyl (PCO) contents (p < 0.001), and acetylcholinesterase (p < 0.01) activities, and inhibited inflammatory markers (TNF-α, IL-1β, NF-κβ, and COX-2) levels. Furthermore, our results showed that DMF augmented GSH (p < 0.001) levels and SOD (p < 0.05), CAT, and GSH-Px (p < 0.001) activities in the hippocampus. Nrf2 (p < 0.05) and its downstream targets HO-1 levels (p < 0.01) and NQO1 (p < 0.05) levels were also up-regulated after DMF treatment. CONCLUSION Taken together, the results demonstrate that DMF could serve as a promising neuroprotective agent for treating vascular dementia.
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Affiliation(s)
- Navneet Dhaliwal
- Pharmacology Research Laboratory, Pharmacology Division, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Jatinder Dhaliwal
- Pharmacology Research Laboratory, Pharmacology Division, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India
| | - Aagamjit Singh
- All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India
| | - Kanwaljit Chopra
- Pharmacology Research Laboratory, Pharmacology Division, UGC Centre of Advanced Studies, University Institute of Pharmaceutical Sciences (UIPS), Panjab University, Chandigarh, 160014, India.
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Li W, Qi L, Guo Y, Zhang Z, He G, Li Y, Wang Z. Application Value of CTA in the Computer-Aided Diagnosis of Subarachnoid Hemorrhage of Different Origins. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2021:6638610. [PMID: 33510889 PMCID: PMC7822679 DOI: 10.1155/2021/6638610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/10/2020] [Accepted: 01/04/2021] [Indexed: 11/18/2022]
Abstract
Subarachnoid hemorrhage (SAH) is difficult to detect because of its circulation through subarachnoid space, which leads to a high rate of missed diagnosis. Based on the above background, the purpose of this study is to study the application value of brain CT angiography (CTA) in computer-aided diagnosis of subarachnoid hemorrhage with a wide range of brain digital subtraction angiography as a gold standard. This paper collected images and related medical records of 111 patients with spontaneous subarachnoid hemorrhage receiving brain CTA and DSA examinations from February 2015 to November 2019 in the neurology department of our hospital. In contrast to the number, position, length, width, and neck width of the causative aneurysm detected by DSA, we evaluated the diagnostic results of CTA and evaluated whether there was statistical difference between the two detectives of intracranial aneurysms. The results showed that the area under ROC curve of subtraction CTA and conventional CTA was 1.000 and 0.818, respectively, which indicated that the former had better display effect on internal carotid aneurysm (AUC > 0.9), while the latter had medium value (0.7 < AUC ≤ 0.9), and the difference was statistically significant (z = 2.390, p=0.017).
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Affiliation(s)
- Wei Li
- Department of Forensic Pathology, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Lin Qi
- Department of Forensic Pathology, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
- Railway Police College, Zhengzhou, Henan 450053, China
| | - Yulong Guo
- Railway Police College, Zhengzhou, Henan 450053, China
| | - Zhen Zhang
- Railway Police College, Zhengzhou, Henan 450053, China
| | - Guanglong He
- Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - Yang Li
- Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - Zhenyuan Wang
- Department of Forensic Pathology, College of Forensic Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
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Shao A, Lin D, Wang L, Tu S, Lenahan C, Zhang J. Oxidative Stress at the Crossroads of Aging, Stroke and Depression. Aging Dis 2020; 11:1537-1566. [PMID: 33269106 PMCID: PMC7673857 DOI: 10.14336/ad.2020.0225] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 02/25/2020] [Indexed: 12/17/2022] Open
Abstract
Epidemiologic studies have shown that in the aging society, a person dies from stroke every 3 minutes and 42 seconds, and vast numbers of people experience depression around the globe. The high prevalence and disability rates of stroke and depression introduce enormous challenges to public health. Accumulating evidence reveals that stroke is tightly associated with depression, and both diseases are linked to oxidative stress (OS). This review summarizes the mechanisms of OS and OS-mediated pathological processes, such as inflammation, apoptosis, and the microbial-gut-brain axis in stroke and depression. Pathological changes can lead to neuronal cell death, neurological deficits, and brain injury through DNA damage and the oxidation of lipids and proteins, which exacerbate the development of these two disorders. Additionally, aging accelerates the progression of stroke and depression by overactive OS and reduced antioxidant defenses. This review also discusses the efficacy and safety of several antioxidants and antidepressants in stroke and depression. Herein, we propose a crosstalk between OS, aging, stroke, and depression, and provide potential therapeutic strategies for the treatment of stroke and depression.
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Affiliation(s)
- Anwen Shao
- 1Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China
| | - Danfeng Lin
- 2Department of Surgical Oncology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China
| | - Lingling Wang
- 2Department of Surgical Oncology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China
| | - Sheng Tu
- 3State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Zhejiang, China
| | - Cameron Lenahan
- 4Burrell College of Osteopathic Medicine, Las Cruces, USA.,5Center for Neuroscience Research, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Jianmin Zhang
- 1Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China.,6Brain Research Institute, Zhejiang University, Zhejiang, China.,7Collaborative Innovation Center for Brain Science, Zhejiang University, Zhejiang, China
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Therapeutic Potential of Heme Oxygenase-1 in Aneurysmal Diseases. Antioxidants (Basel) 2020; 9:antiox9111150. [PMID: 33228202 PMCID: PMC7699558 DOI: 10.3390/antiox9111150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 12/15/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) and intracranial aneurysm (IA) are serious arterial diseases in the aorta and brain, respectively. AAA and IA are associated with old age in males and females, respectively, and if rupture occurs, they carry high morbidity and mortality. Aneurysmal subarachnoid hemorrhage (SAH) due to IA rupture has a high rate of complication and fatality. Despite these severe clinical outcomes, preventing or treating these devastating diseases remains an unmet medical need. Inflammation and oxidative stress are shared pathologies of these vascular diseases. Therefore, therapeutic strategies have focused on reducing inflammation and reactive oxygen species levels. Interestingly, in response to cellular stress, the inducible heme oxygenase-1 (HO-1) is highly upregulated and protects against tissue injury. HO-1 degrades the prooxidant heme and generates molecules with antioxidative and anti-inflammatory properties, resulting in decreased oxidative stress and inflammation. Therefore, increasing HO-1 activity is an attractive option for therapy. Several HO-1 inducers have been identified and tested in animal models for preventing or alleviating AAA, IA, and SAH. However, clinical trials have shown conflicting results. Further research and the development of highly selective HO-1 regulators may be needed to prevent the initiation and progression of AAA, IA, or SAH.
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Yang T, Zhang F. Targeting Transcription Factor Nrf2 (Nuclear Factor Erythroid 2-Related Factor 2) for the Intervention of Vascular Cognitive Impairment and Dementia. Arterioscler Thromb Vasc Biol 2020; 41:97-116. [PMID: 33054394 DOI: 10.1161/atvbaha.120.314804] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Vascular cognitive impairment and dementia (VCID) is an age-related, mild to severe mental disability due to a broad panel of cerebrovascular disorders. Its pathobiology involves neurovascular dysfunction, blood-brain barrier disruption, white matter damage, microRNAs, oxidative stress, neuroinflammation, and gut microbiota alterations, etc. Nrf2 (Nuclear factor erythroid 2-related factor 2) is the master regulator of redox status and controls the transcription of a panel of antioxidative and anti-inflammatory genes. By interacting with NF-κB (nuclear factor-κB), Nrf2 also fine-tunes the cellular oxidative and inflammatory balance. Aging is associated with Nrf2 dysfunction, and increasing evidence has proved the role of Nrf2 in mitigating the VCID process. Based on VCID pathobiologies and Nrf2 studies from VCID and other brain diseases, we point out several hypothetical Nrf2 targets for VCID management, including restoration of endothelial function and neurovascular coupling, preservation of blood-brain barrier integrity, reduction of amyloidopathy, promoting white matter integrity, and mitigating oxidative stress and neuroinflammation. Collectively, the Nrf2 pathway could be a promising direction for future VCID research. Targeting Nrf2 would shed light on VCID managing strategies.
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Affiliation(s)
- Tuo Yang
- Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh, PA
| | - Feng Zhang
- Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh, PA
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Sachinvala ND, Teramoto N, Stergiou A. Proposed Neuroimmune Roles of Dimethyl Fumarate, Bupropion, S-Adenosylmethionine, and Vitamin D 3 in Affording a Chronically Ill Patient Sustained Relief from Inflammation and Major Depression. Brain Sci 2020; 10:E600. [PMID: 32878267 PMCID: PMC7563300 DOI: 10.3390/brainsci10090600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/23/2020] [Accepted: 08/25/2020] [Indexed: 12/14/2022] Open
Abstract
We had discussed earlier that, after most of the primary author's multiple sclerosis (MS) symptoms were lessened by prior neuroimmune therapies, use of dimethyl fumarate (DMF) gradually subdued his asthma and urticaria symptoms, as well as his MS-related intercostal cramping; and bupropion supplemented with S-adenosylmethionine (SAMe) and vitamin D3 (vit-D3) helped remit major depression (MD). Furthermore, the same cocktail (bupropion plus supplements), along with previously discussed routines (yoga, meditation, physical exercises, and timely use of medications for other illnesses), continued to subdue MD during new difficulties with craniopharyngioma, which caused bitemporal vision loss; sphenoid sinus infections, which caused cranial nerve-VI (CN6) palsy and diplopia; and through their treatments. Impressed by the benefit the four compounds provided, in this manuscript, we focus on explaining current neuroimmune literature proposals on how: (1) DMF impedes inflammation, oxidative stress, and cell death in CNS and peripheral tissues; (2) Bupropion curbs anxiety, MD, and enhances alertness, libido, and moods; (3) SAMe silences oxidative stress and depression by multiple mechanisms; and (4) Vit-D3 helps brain development and functioning and subdues inflammation. we realize that herein we have reviewed proposed mechanisms of remedies we discovered by literature searches and physician assisted auto-experimentation; and our methods might not work with other patients. We present our experiences so readers are heartened to reflect upon their own observations in peer-reviewed forums and make available a wide body of information for the chronically ill and their physicians to benefit from.
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Affiliation(s)
| | - Naozumi Teramoto
- Department of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-0016, Japan;
| | - Angeline Stergiou
- Department of Medicine, Fairfield Medical Center, 401 North Ewing, Lancaster, OH 43130, USA;
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Turan N, Heider RA, Nadeem M, Miller BA, Wali B, Yousuf S, Sayeed I, Stein DG, Pradilla G. Neurocognitive Outcomes in a Cisternal Blood Injection Murine Model of Subarachnoid Hemorrhage. J Stroke Cerebrovasc Dis 2020; 29:105249. [PMID: 33066928 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 07/13/2020] [Accepted: 08/10/2020] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Subarachnoid hemorrhage (SAH) results in neurocognitive dysfunction and anxiety in humans and in animal models. Neurobehavioral tests such as the Morris Water Maze (MWM) and Elevated Plus Maze (EPM) tests are validated in several models of SAH but have not been tested in the murine cisternal blood injection SAH model. METHODS Adult C57BL/6 mice (n=16) were randomized into two groups. Group 1 (n=8) received sham surgery. Group 2 (n=8) underwent SAH with 60 µL of autologous blood injected into the cisterna magna. Mice were then tested using the Modified Garcia Score on post-operative day 2 (POD2), EPM on POD5 & POD16, and MWM on POD6-16.Brain tissues harvested on POD16 were stained with Fluoro-Jade C to identify neurodegeneration in the hippocampus and cortex and Iba-1 immunofluorescence staining for microglial activation in the dentate gyrus and CA1 region of the hippocampus. RESULTS SAH mice showed increased escape latency on POD10. Swim distance was significantly increased on POD9-10 and swim speed was significantly decreased on POD6&POD10 in SAH mice. SAH mice exhibited a trend for lowered proportion of covered arm entries in EPM on POD16. Modified Garcia Score was not significantly different between the groups on POD2. The area of microglial activation in the dentate gyrus and CA1 region of the hippocampus was mildly increased but not significantly different at day 16 after SAH. Similarly, no significant differences were noted in the number of Fluoro-Jade C (+) cells in cortex or hippocampus. CONCLUSIONS Cisternal single blood injection in mice produces mild neurocognitive deficits most pronounced in spatial learning and most evident 10 days after SAH.
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Affiliation(s)
- Nefize Turan
- Emory University School of Medicine, Department of Neurosurgery, Atlanta, GA, USA; Cerebrovascular Research Laboratory, Department of Neurosurgery, Atlanta, GA, USA
| | - Robert A Heider
- Emory University School of Medicine, Department of Neurosurgery, Atlanta, GA, USA
| | - Maheen Nadeem
- Emory University School of Medicine, Department of Neurosurgery, Atlanta, GA, USA
| | - Brandon A Miller
- Emory University School of Medicine, Department of Neurosurgery, Atlanta, GA, USA; Cerebrovascular Research Laboratory, Department of Neurosurgery, Atlanta, GA, USA
| | - Bushra Wali
- Emory University School of Medicine, Department of Emergency Medicine, Atlanta, GA, USA
| | - Seema Yousuf
- Emory University School of Medicine, Department of Emergency Medicine, Atlanta, GA, USA
| | - Iqbal Sayeed
- Emory University School of Medicine, Department of Emergency Medicine, Atlanta, GA, USA
| | - Donald G Stein
- Emory University School of Medicine, Department of Emergency Medicine, Atlanta, GA, USA
| | - Gustavo Pradilla
- Emory University School of Medicine, Department of Neurosurgery, Atlanta, GA, USA; Cerebrovascular Research Laboratory, Department of Neurosurgery, Atlanta, GA, USA.
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Amin FM, Abdelaziz RR, Hamed MF, Nader MA, Shehatou GSG. Dimethyl fumarate ameliorates diabetes-associated vascular complications through ROS-TXNIP-NLRP3 inflammasome pathway. Life Sci 2020; 256:117887. [PMID: 32497629 DOI: 10.1016/j.lfs.2020.117887] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/27/2020] [Accepted: 05/29/2020] [Indexed: 02/08/2023]
Abstract
Vascular complications are a leading cause of morbidity and mortality among diabetic patients. This work aimed to investigate possible influences of dimethyl fumarate (DMF) on streptozotocin (STZ) diabetes-associated vascular complications in rats, exploring its potential to modulate ROS-TXNIP-NLRP3 inflammasome pathway. Two weeks after induction of diabetes (via a single injection of 50 mg/kg STZ, i.p.), diabetic rats were administered either DMF (25 mg/kg/day) or its vehicle for further eight weeks. Age-matched normal and DMF-administered non-diabetic rats served as controls. DMF treatment elicited a mild ameliorative effect on diabetic glycemia. DMF reduced serum TG and AGE levels and enhanced serum HDL-C concentrations in diabetic rats. Moreover, DMF significantly diminished aortic levels of ROS and MDA and restored aortic GSH, SOD and Nrf2 to near-normal levels in STZ rats. Aortic mRNA levels of TXNIP, NLRP3 and NF-κB p65 in diabetic rats were significantly reduced by DMF treatment. Serum and aortic protein levels of TXNIP and aortic contents of IL-1β, iNOS, NLRP3 and TGF-β1 were significantly lower in DMF-diabetic animals than non-treated diabetic rats. Furthermore, protein expression of TNF-α and caspase-3 in diabetic aortas was greatly attenuated by DMF administration. DMF enhanced eNOS mRNA and protein levels and increased bioavailable NO in diabetic aortas. Functionally, DMF attenuated contractile responses of diabetic aortic rings to KCl and phenylephrine and enhanced their relaxant responses to acetylcholine. DMF also mitigated diabetes-induced fibrous tissue proliferation in aortic tunica media. Collectively, these findings demonstrate that DMF offered vasculoprotective influences on diabetic aortas via attenuation of ROS-TXNIP-NLRP3 inflammasome pathway.
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Affiliation(s)
- Fatma M Amin
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Rania R Abdelaziz
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Mohamed F Hamed
- Department of Pathology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Manar A Nader
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - George S G Shehatou
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt; Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa City, Egypt.
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Chen X, Liang H, Xi Z, Yang Y, Shan H, Wang B, Zhong Z, Xu C, Yang GY, Sun Q, Sun Y, Bian L. BM-MSC Transplantation Alleviates Intracerebral Hemorrhage-Induced Brain Injury, Promotes Astrocytes Vimentin Expression, and Enhances Astrocytes Antioxidation via the Cx43/Nrf2/HO-1 Axis. Front Cell Dev Biol 2020; 8:302. [PMID: 32457903 PMCID: PMC7227447 DOI: 10.3389/fcell.2020.00302] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/07/2020] [Indexed: 12/30/2022] Open
Abstract
Intracerebral hemorrhage (ICH) is a particularly severe form of stroke, and reactive astrogliosis is a common response following injury to the central nervous system (CNS). Mesenchymal stem cells (MSCs) are reported to promote neurogenesis and alleviate the late side effects in injured brain regions. Gap junctions (Gjs) are abundant in the brain, where the richest connexin (Cx) is Cx43, most prominently expressed in astrocytes. Nuclear factor erythroid 2-related factor 2 (Nrf2) is an essential transcription factor regulating antioxidant reactions. Here, we aimed to explore whether bone marrow MSCs (BM-MSCs) could alleviate brain injury and protect astrocytes from apoptosis, by regulating Cx43 and Nrf2. We validated the effect of BM-MSC transplantation in an ICH model in vivo and in vitro and detected changes using immunofluorescence, as well as protein and mRNA expression of glial fibrillary acidic protein (GFAP), vimentin (VIM), Cx43, Nrf2, and heme oxygenase-1 (HO-1). Our results showed that BM-MSC transplantation attenuated brain injury after ICH and upregulated VIM expression in vivo and in vitro. Additionally, Cx43 upregulation and Nrf2 nuclear translocation were observed in astrocytes cocultured with BM-MSC. Knockdown of Cx43 by siRNA restrained Nrf2 nuclear translocation. Cx43 and Nrf2 had a connection as determined by immunofluorescence and coimmunoprecipitation. We demonstrated that astrocytes undergo astroglial-mesenchymal phenotype switching and have anti-apoptotic abilities after BM-MSC transplantation, where Cx43 upregulation triggers Nrf2 nuclear translocation and promotes its phase II enzyme expression. The Cx43/Nrf2 interaction of astrocytes after BM-MSC transplantation may provide an important therapeutic target in the management of ICH.
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Affiliation(s)
- Xiao Chen
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huaibin Liang
- Department of Neurology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhiyu Xi
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yong Yang
- Department of Neurosurgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Huimin Shan
- Neuroscience and Neuroengineering Center, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Baofeng Wang
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhihong Zhong
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Canxin Xu
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Guo-Yuan Yang
- Neuroscience and Neuroengineering Center, Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Qingfang Sun
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuhao Sun
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Liuguan Bian
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Li T, Zheng LN, Han XH. Fenretinide attenuates lipopolysaccharide (LPS)-induced blood-brain barrier (BBB) and depressive-like behavior in mice by targeting Nrf-2 signaling. Biomed Pharmacother 2020; 125:109680. [DOI: 10.1016/j.biopha.2019.109680] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/07/2019] [Accepted: 11/16/2019] [Indexed: 11/27/2022] Open
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Pascale CL, Martinez AN, Carr C, Sawyer DM, Ribeiro-Alves M, Chen M, O'Donnell DB, Guidry JJ, Amenta PS, Dumont AS. Treatment with dimethyl fumarate reduces the formation and rupture of intracranial aneurysms: Role of Nrf2 activation. J Cereb Blood Flow Metab 2020; 40:1077-1089. [PMID: 31220996 PMCID: PMC7181091 DOI: 10.1177/0271678x19858888] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Oxidative stress and chronic inflammation in arterial walls have been implicated in intracranial aneurysm (IA) formation and rupture. Dimethyl fumarate (DMF) exhibits immunomodulatory properties, partly via activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway which reduces oxidative stress by inducing the antioxidant response element (ARE). This study evaluated the effects of DMF both in vitro, using tumor necrosis factor (TNF)-α-treated vascular smooth muscle cells (VSMC), and in vivo, using a murine elastase model to induce aneurysm formation. The mice were treated with either DMF at 100 mg/kg/day P.O. or vehicle for two weeks. DMF treatment protected VSMCs from TNF-α-induced inflammation as demonstrated by its downregulation of cytokines and upregulation of Nrf2 and smooth muscle cell markers. At higher doses, DMF also inhibited the pro-proliferative action of TNF-α by increasing apoptosis which protected the cells from aponecrosis. In mice, DMF treatment significantly decreased the incidence of aneurysm formation and rupture, at the same time increasing Nrf2 levels. DMF demonstrated a neuroprotective effect in mice with a resultant inhibition of oxidative stress, inflammation, and fibrosis in the cerebrovasculature. This suggests a potential role for DMF as a rescue therapy for patients at risk for formation and rupture of IAs.
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Affiliation(s)
- Crissey L Pascale
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
| | - Alejandra N Martinez
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
| | - Christopher Carr
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
| | - David M Sawyer
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
| | - Marcelo Ribeiro-Alves
- Laboratory of Clinical Research on STD/AIDS, National Institute of Infectology Evandro Chagas (INI)-Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, RJ, Brazil
| | - Mimi Chen
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
| | - Devon B O'Donnell
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
| | - Jessie J Guidry
- Louisiana State University Health Sciences Center Proteomics Core Facility, New Orleans, LA, USA
| | - Peter S Amenta
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
| | - Aaron S Dumont
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA
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Brandes MS, Gray NE. NRF2 as a Therapeutic Target in Neurodegenerative Diseases. ASN Neuro 2020; 12:1759091419899782. [PMID: 31964153 PMCID: PMC6977098 DOI: 10.1177/1759091419899782] [Citation(s) in RCA: 157] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 11/26/2019] [Accepted: 12/03/2019] [Indexed: 12/13/2022] Open
Abstract
Increased reactive oxygen species production and oxidative stress have been implicated in the pathogenesis of numerous neurodegenerative conditions including among others Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, Friedrich’s ataxia, multiple sclerosis, and stroke. The endogenous antioxidant response pathway protects cells from oxidative stress by increasing the expression of cytoprotective enzymes and is regulated by the transcription factor nuclear factor erythroid 2-related factor 2 (NRF2). In addition to regulating the expression of antioxidant genes, NRF2 has also been shown to exert anti-inflammatory effects and modulate both mitochondrial function and biogenesis. This is because mitochondrial dysfunction and neuroinflammation are features of many neurodegenerative diseases as well NRF2 has emerged as a promising therapeutic target. Here, we review evidence for a beneficial role of NRF2 in neurodegenerative conditions and the potential of specific NRF2 activators as therapeutic agents.
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Affiliation(s)
- Mikah S. Brandes
- Department of Neurology, Oregon Health and Science University, Portland, OR, USA
| | - Nora E. Gray
- Department of Neurology, Oregon Health and Science University, Portland, OR, USA
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Martinez AN, Pascale CL, Amenta PS, Israilevich R, Dumont AS. Cell Culture Model to Study Cerebral Aneurysm Biology. ACTA NEUROCHIRURGICA SUPPLEMENT 2020; 127:29-34. [DOI: 10.1007/978-3-030-04615-6_5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Propofol Reduces Inflammatory Brain Injury after Subarachnoid Hemorrhage: Involvement of PI3K/Akt Pathway. J Stroke Cerebrovasc Dis 2019; 28:104375. [PMID: 31590996 DOI: 10.1016/j.jstrokecerebrovasdis.2019.104375] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/04/2019] [Accepted: 08/26/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Our previous study showed that propofol, one of the widely used anesthetic agents, can attenuate subarachnoid hemorrhage (SAH)-induced early brain injury (EBI) via inhibiting inflammatory and oxidative reaction. However, it is perplexing whether propofol attenuates inflammatory and oxidative reaction through modulating PI3K/Akt pathway. The present study investigated whether PI3K/Akt pathway is involved in propofol's anti-inflammation, antioxidation, and neuroprotection against SAH-induced EBI. MATERIALS AND METHODS Adult Sprague-Dawley rats underwent SAH and received treatment with propofol or vehicle after 2 and 12 hours of SAH. LY294002 was injected intracerebroventricularly to selectively inhibit PI3K/Akt signaling. Mortality, SAH grading, neurological scores, brain water content, evans blue extravasation, myeloperoxidase, malondialdehyde, superoxide dismutase, and glutathione peroxidase were measured 24 hours after SAH. Immunoreactivity of p-Akt, t-Akt, nuclear factor- kappa B (NF-κB) p65, nuclear factor erythroid-related factor 2 (Nrf2), NAD(P)H:quinone oxidoreductase (NQO1), and cyclooxygenase-2 (COX-2) in rat brain was determined by western blot. Tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in rat brain were examined by ELISA. RESULTS Propofol significantly reduces neurological dysfunction, BBB permeability, brain edema, inflammation, and oxidative stress, all of which were reversed by LY294002. Propofol significantly upregulates the immunoreactivity of p-Akt, Nrf2, and NQO1, all of which were abolished by LY294002. Propofol significantly downregulates the overexpression of NF-κB p65, COX-2, TNF-α, and IL-1β, all of which were inhibited by LY294002. CONCLUSION These results suggest that propofol attenuates SAH-induced EBI by inhibiting inflammatory reaction and oxidative stress, which might be associated with the activation of PI3K/Akt signaling pathway.
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Griffiths S, Clark J, Adamides AA, Ziogas J. The role of haptoglobin and hemopexin in the prevention of delayed cerebral ischaemia after aneurysmal subarachnoid haemorrhage: a review of current literature. Neurosurg Rev 2019; 43:1273-1288. [PMID: 31493061 DOI: 10.1007/s10143-019-01169-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 07/23/2019] [Accepted: 08/26/2019] [Indexed: 01/01/2023]
Abstract
Delayed cerebral ischaemia (DCI) after aneurysmal subarachnoid haemorrhage (aSAH) is a major cause of mortality and morbidity. The pathophysiology of DCI after aSAH is thought to involve toxic mediators released from lysis of red blood cells within the subarachnoid space, including free haemoglobin and haem. Haptoglobin and hemopexin are endogenously produced acute phase proteins that are involved in the clearance of these toxic mediators. The aim of this review is to investigate the pathophysiological mechanisms involved in DCI and the role of both endogenous as well as exogenously administered haptoglobin and hemopexin in the prevention of DCI.
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Affiliation(s)
- Sean Griffiths
- Department of Neurosurgery, Royal Melbourne Hospital, 300 Grattan St, Parkville, 3050, Australia. .,Western Hospital, 160 Gordon St, Footscray, 3011, Australia.
| | - Jeremy Clark
- Department of Neurosurgery, Royal Melbourne Hospital, 300 Grattan St, Parkville, 3050, Australia
| | - Alexios A Adamides
- Department of Neurosurgery, Royal Melbourne Hospital, 300 Grattan St, Parkville, 3050, Australia
| | - James Ziogas
- Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, 3010, Australia
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Chen X, Xi Z, Liang H, Sun Y, Zhong Z, Wang B, Bian L, Sun Q. Melatonin Prevents Mice Cortical Astrocytes From Hemin-Induced Toxicity Through Activating PKCα/Nrf2/HO-1 Signaling in vitro. Front Neurosci 2019; 13:760. [PMID: 31404262 PMCID: PMC6669962 DOI: 10.3389/fnins.2019.00760] [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: 04/11/2019] [Accepted: 07/09/2019] [Indexed: 12/30/2022] Open
Abstract
Secondary injuries mediated by oxidative stress lead to deterioration of neurological functions after intracerebral hemorrhage (ICH). Cortical astrocytes are among the most important cells in the central nervous system (CNS), and play key roles in maintaining redox homeostasis by providing oxidative stress defense. Hemin is a product of hemoglobin degradation, which has strong toxicity and can induce reactive oxygen species (ROS). Melatonin (Mel) and its metabolites are well tolerated without toxicity, prevent tissue damage as well as effectively assist in scavenging free radicals. We evaluated the hemin neurotoxicity to astrocytes and the resistance of Mel-treated astrocytes to hemin neurotoxicity. And we found Mel induced PKCα phosphorylation (p-PKC), nuclear translocation of Nrf2 in astrocytes, and upregulation of HO-1, which contributed to the reduction of ROS accumulation and cell apoptosis. Nrf2 and HO1 protein expression upregulated by Mel were decreased after administration of PKC inhibitor, Ro 31-8220 (Ro 31). Luzindole (Luz), a melatonin receptor inhibitor, suppressed p-PKCα, HO-1, and Nrf2 expression upregulated by Mel and increased cell apoptosis rate. The upregulation of HO-1 induced by Mel was depressed by knocking down Nrf2 expression by siRNA, which also decreased the resistance of astrocytes to toxicity of hemin. Mel activates astrocytes through PKCα/Nrf2/HO-1 signaling pathway to acquire resistance to toxicity of hemin and resist from oxidative stress and apoptosis. The positive effect of Mel on PKCα/Nrf2/HO-1 signaling pathway may become a new target for neuroprotection after intracerebral hemorrhage.
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Affiliation(s)
- Xiao Chen
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhiyu Xi
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huaibin Liang
- Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuhao Sun
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhihong Zhong
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Baofeng Wang
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Liuguan Bian
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qingfang Sun
- Department of Neurosurgery, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Department of Neurosurgery, Ruijin Hospital Luwan Branch, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Neuroprotective Role of the Nrf2 Pathway in Subarachnoid Haemorrhage and Its Therapeutic Potential. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6218239. [PMID: 31191800 PMCID: PMC6525854 DOI: 10.1155/2019/6218239] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/17/2019] [Accepted: 03/20/2019] [Indexed: 12/11/2022]
Abstract
The mechanisms underlying poor outcome following subarachnoid haemorrhage (SAH) are complex and multifactorial. They include early brain injury, spreading depolarisation, inflammation, oxidative stress, macroscopic cerebral vasospasm, and microcirculatory disturbances. Nrf2 is a global promoter of the antioxidant and anti-inflammatory response and has potential protective effects against all of these mechanisms. It has been shown to be upregulated after SAH, and Nrf2 knockout animals have poorer functional and behavioural outcomes after SAH. There are many agents known to activate the Nrf2 pathway. Of these, the actions of sulforaphane, curcumin, astaxanthin, lycopene, tert-butylhydroquinone, dimethyl fumarate, melatonin, and erythropoietin have been studied in SAH models. This review details the different mechanisms of injury after SAH including the contribution of haemoglobin (Hb) and its breakdown products. It then summarises the evidence that the Nrf2 pathway is active and protective after SAH and finally examines the evidence supporting Nrf2 upregulation as a therapy after SAH.
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Zhang T, Wu P, Budbazar E, Zhu Q, Sun C, Mo J, Peng J, Gospodarev V, Tang J, Shi H, Zhang JH. Mitophagy Reduces Oxidative Stress Via Keap1 (Kelch-Like Epichlorohydrin-Associated Protein 1)/Nrf2 (Nuclear Factor-E2-Related Factor 2)/PHB2 (Prohibitin 2) Pathway After Subarachnoid Hemorrhage in Rats. Stroke 2019; 50:978-988. [PMID: 30890112 PMCID: PMC6433519 DOI: 10.1161/strokeaha.118.021590] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 01/30/2019] [Indexed: 11/16/2022]
Abstract
Background and Purpose- Mitoquinone has been reported as a mitochondria-targeting antioxidant to promote mitophagy in various chronic diseases. Here, our aim was to study the role of mitoquinone in mitophagy activation and oxidative stress-induced neuronal death reduction after subarachnoid hemorrhage (SAH) in rats. Methods- Endovascular perforation was used for SAH model of male Sprague-Dawley rats. Exogenous mitoquinone was injected intraperitoneally 1 hour after SAH. ML385, an inhibitor of Nrf2 (nuclear factor-E2-related factor 2), was given intracerebroventricularly 24 hours before SAH. Small interfering RNA for PHB2 (prohibitin 2) was injected intracerebroventricularly 48 hours before SAH. Nuclear, mitochondrial, and cytoplasmic fractions were gathered using nucleus and mitochondria isolation kits. SAH grade evaluation, short- and long- term neurological function tests, oxidative stress, and apoptosis measurements were performed. Pathway related proteins were investigated with Western blot and immunofluorescence staining. Results- Expression of Keap1 (Kelch-like epichlorohydrin-associated protein 1, 2.84× at 24 hours), Nrf2 (2.78× at 3 hours), and LC3II (light chain 3-II; 1.94× at 24 hours) increased, whereas PHB2 (0.46× at 24 hours) decreased after SAH compared with sham group. Mitoquinone treatment attenuated oxidative stress and neuronal death, both short-term and long-term. Administration of mitoquinone resulted in a decrease in expression of Keap1 (0.33×), Romo1 (reactive oxygen species modulator 1; 0.24×), Bax (B-cell lymphoma-2 associated X protein; 0.31×), Cleaved Caspase-3 (0.29×) and an increase in Nrf2 (2.13×), Bcl-xl (B-cell lymphoma-extra large; 1.67×), PINK1 (phosphatase and tensin-induced kinase 1; 1.67×), Parkin (1.49×), PHB2 (1.60×), and LC3II (1.67×) proteins compared with SAH+vehicle group. ML385 abolished the treatment effects of mitoquinone on behavior and protein levels. PHB2 small interfering RNA reversed the outcomes of mitoquinone administration through reduction in protein expressions downstream of PHB2. Conclusions- Mitoquinone inhibited oxidative stress-related neuronal death by activating mitophagy via Keap1/Nrf2/PHB2 pathway after SAH. Mitoquinone may serve as a potential treatment to relieve brain injury after SAH.
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Affiliation(s)
- Tongyu Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Pei Wu
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Enkhjargal Budbazar
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Qiquan Zhu
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Chengmei Sun
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jun Mo
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jianhua Peng
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Vadim Gospodarev
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Huaizhang Shi
- Department of Neurosurgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | - John H. Zhang
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
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Fahim AT, Abd El-Fattah AA, Sadik NAH, Ali BM. Resveratrol and dimethyl fumarate ameliorate testicular dysfunction caused by chronic unpredictable mild stress-induced depression in rats. Arch Biochem Biophys 2019; 665:152-165. [DOI: 10.1016/j.abb.2019.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 03/15/2019] [Accepted: 03/16/2019] [Indexed: 02/07/2023]
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Akino N, Wada-Hiraike O, Isono W, Terao H, Honjo H, Miyamoto Y, Tanikawa M, Sone K, Hirano M, Harada M, Hirata T, Hirota Y, Koga K, Oda K, Fujii T, Osuga Y. Activation of Nrf2/Keap1 pathway by oral Dimethylfumarate administration alleviates oxidative stress and age-associated infertility might be delayed in the mouse ovary. Reprod Biol Endocrinol 2019; 17:23. [PMID: 30760288 PMCID: PMC6375213 DOI: 10.1186/s12958-019-0466-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 02/08/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Age-associated infertility is a problem worldwide, and management of oxidative stress is known to be essential. Nuclear factor-E2-related factor 2 (Nrf2)/Kelch-like ECH-associated protein 1 (Keap1)-antioxidant response element (ARE) signaling pathway works as an essential defense mechanism against oxidative stress, and an oral drug Dimethylfumarate (DMF) is known to activate the pathway. METHODS We tested the hypothesis that oral DMF could alleviate oxidative stress in the ovary, resulting in salvation of age-associated infertility in a mouse model of reproductive age, and we examined the effects of DMF administration. 20 mg/kg DMF was administrated to female mice from 32 to 48 weeks, and Nrf2 levels, antioxidant levels, ovarian reserve, DNA damage, and oxidative stress were examined. RESULTS DMF administration resulted in elevated mRNA and protein levels of Nrf2, antioxidants, and telomere, and serum levels of Nrf2 and anti-mullerian hormone were also elevated. Results of TUNEL assay and Immunohistochemistry of mice ovarian tissues showed that DNA damage and oxidative stress were decreased by DMF administration, and significantly more oocytes were collected along with preservation of 60% more primordial follicles. CONCLUSIONS Our data suggest that DMF administration activates the Nrf2/Keap1 pathway, elevate levels of antioxidants, and decrease DNA damage and oxidative stress, resulting in improved ovarian reserve in the mouse ovary.
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Affiliation(s)
- Nana Akino
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Osamu Wada-Hiraike
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Wataru Isono
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
- 0000 0000 9239 9995grid.264706.1Department of Obstetrics and Gynecology, Mizonokuchi Hospital, Teikyo University, Kawasaki, 2138507 Japan
| | - Hiromi Terao
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Harunori Honjo
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Yuichiro Miyamoto
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Michihiro Tanikawa
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Kenbun Sone
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Mana Hirano
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Miyuki Harada
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Tetsuya Hirata
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Yasushi Hirota
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Kaori Koga
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Katsutoshi Oda
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Tomoyuki Fujii
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
| | - Yutaka Osuga
- 0000 0001 2151 536Xgrid.26999.3dDepartment of Obstetrics and Gynecology, Graduate school of Medicine, The University of Tokyo, Tokyo, 1138655 Japan
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Miller E, Morel A, Redlicka J, Miller I, Saluk J. Pharmacological and Non-pharmacological Therapies of Cognitive Impairment in Multiple Sclerosis. Curr Neuropharmacol 2018; 16:475-483. [PMID: 29119933 PMCID: PMC6018194 DOI: 10.2174/1570159x15666171109132650] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/09/2017] [Accepted: 11/07/2017] [Indexed: 01/27/2023] Open
Abstract
Background Cognitive impairment is one of the most important clinical features of neurodegenerative disorders including multiple sclerosis (MS). Conducted research shows that up to 65 percent of MS patients have cognitive deficits such as episodic memory, sustained attention, reduced verbal fluency; however, the cognitive MS domain is information processing speed. It is the first syndrome of cognitive dysfunction and the most widely affected in MS. Occasionally these impairments occur even before the appearance of physical symptoms. Methods Therefore, this review focused on the current status of our knowledge about possible methods of treatment cognitive impairment in MS patients including novel strategies. Research and online content was performed using Medline and EMBASE databases. Results The most recent research suggests that cognitive impairment is correlated with brain lesion volume and brain atrophy. The examination of the cognitive impairment is usually based on particular neuropsychological batteries. However, it can be not enough to make a precise diagnosis. This creates a demand to find markers that might be useful for identifying patients with risk of cognitive impairment at an early stage of the disease. Currently the most promising methods consist of neuroimaging indicators, such as diffusion tensor imaging, the magnetization transfer ratio, and N-acetyl aspartate levels. Diagnosis problems are strictly connected with treatment procedures. There are two main cognitive therapies: pharmacological (disease modifying drugs (DMD), symptomatic treatments) and non-pharmacological interventions that are focused on psychological and physical rehabilitation. Some trials have shown a positive association between physical activity and the cognitive function. Conclusion This article is an overview of the current state of knowledge related to cognition impairment treatment in MS. Additionally, novel strategies for cognitive impairments such as cryostimulation and other complementary methods are presented.
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Affiliation(s)
- Elzbieta Miller
- Department of Physical Medicine, Medical University of Lodz, Lodz, Poland.,Neurorehabilitation Ward, 3rd General Hospital in Lodz, Lodz, Milionowa 14, Poland
| | - Agnieszka Morel
- Department of General Biochemistry, Faculty of Biology and Environmental Protection. University of Lodz, Pomorska 141/143, Lodz, Poland
| | - Justyna Redlicka
- Department of Physical Medicine, Medical University of Lodz, Lodz, Poland.,Neurorehabilitation Ward, 3rd General Hospital in Lodz, Lodz, Milionowa 14, Poland
| | - Igor Miller
- Department of Physical Medicine, Medical University of Lodz, Lodz, Poland
| | - Joanna Saluk
- Department of General Biochemistry, Faculty of Biology and Environmental Protection. University of Lodz, Pomorska 141/143, Lodz, Poland
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50
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Zhang X, Wu Q, Lu Y, Wan J, Dai H, Zhou X, Lv S, Chen X, Zhang X, Hang C, Wang J. Cerebroprotection by salvianolic acid B after experimental subarachnoid hemorrhage occurs via Nrf2- and SIRT1-dependent pathways. Free Radic Biol Med 2018; 124:504-516. [PMID: 29966698 PMCID: PMC6286712 DOI: 10.1016/j.freeradbiomed.2018.06.035] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/27/2018] [Accepted: 06/28/2018] [Indexed: 01/19/2023]
Abstract
Salvianolic acid B (SalB), a natural polyphenolic compound extracted from the herb of Salvia miltiorrhiza, possesses antioxidant and neuroprotective properties and has been shown to be beneficial for diseases that affect vasculature and cognitive function. Here we investigated the protective effects of SalB against subarachnoid hemorrhage (SAH)-induced oxidative damage, and the involvement of underlying molecular mechanisms. In a rat model of SAH, SalB inhibited SAH-induced oxidative damage. The reduction in oxidative damage was associated with suppressed reactive oxygen species generation; decreased lipid peroxidation; and increased glutathione peroxidase, glutathione, and superoxide dismutase activities. Concomitant with the suppressed oxidative stress, SalB significantly reduced neurologic impairment, brain edema, and neural cell apoptosis after SAH. Moreover, SalB dramatically induced nuclear factor-erythroid 2-related factor 2 (Nrf2) nuclear translocation and increased expression of heme oxygenase-1 and NADPH: quinine oxidoreductase-1. In a mouse model of SAH, Nrf2 knockout significantly reversed the antioxidant effects of SalB against SAH. Additionally, SalB activated sirtuin 1 (SIRT1) expression, whereas SIRT1-specific inhibitor sirtinol pretreatment significantly suppressed SalB-induced SIRT1 activation and Nrf2 expression. Sirtinol pretreatment also reversed the antioxidant and neuroprotective effects of SalB. In primary cultured cortical neurons, SalB suppressed oxidative damage, alleviated neuronal degeneration, and improved cell viability. These beneficial effects were associated with activation of the SIRT1 and Nrf2 signaling pathway and were reversed by sirtinol treatment. Taken together, these in vivo and in vitro findings suggest that SalB provides protection against SAH-triggered oxidative damage by upregulating the Nrf2 antioxidant signaling pathway, which may be modulated by SIRT1 activation.
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Affiliation(s)
- Xiangsheng Zhang
- Department of Neurosurgery, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China; Department of Anesthesiology and Critical Care Medicine, the Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Qi Wu
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Yue Lu
- Department of Neurosurgery, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Jieru Wan
- Department of Anesthesiology and Critical Care Medicine, the Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Haibin Dai
- Department of Neurosurgery, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Xiaoming Zhou
- Department of Neurosurgery, Changzheng Hospital, School of Medicine, Second Military Medical University, Shanghai, China
| | - Shengyin Lv
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Xuemei Chen
- Department of Anatomy, College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Xin Zhang
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China.
| | - Chunhua Hang
- Department of Neurosurgery, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China.
| | - Jian Wang
- Department of Anesthesiology and Critical Care Medicine, the Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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