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Cheng X, Li YN, Fan YB, Zhao HH, Li L, Lu C, Zhu LH, Niu Q. Cytokines in cerebrospinal fluid as a prognostic predictor after treatment of nusinersen in SMA patients. Clin Neurol Neurosurg 2024; 244:108462. [PMID: 39047390 DOI: 10.1016/j.clineuro.2024.108462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 06/30/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
OBJECTIVES Recent studies have suggested that neuroinflammation may play a role in the progression of spinal muscular atrophy (SMA), and this may influence the efficacy of antisense oligonucleotide treatment. This study explored the biomarkers associated with SMA and the efficacy of nusinersen therapy. METHODS Fifteen patients with SMA were enrolled and their motor function (World Health Organization motor milestone, Hammersmith Functional Motor Scale Expanded (HFMSE), and Revised Upper Limb Module [RULM] scores, and 6-minute walking test) was evaluated before, during (63 days), and after (6 months) nusinersen treatment. The concentrations of monocyte chemoactive protein 1 (MCP1), tumour necrosis factor-alpha (TNF-α), and interleukin (IL)-10 in the cerebrospinal fluid were measured at the indicated time points, and their correlations with motor function were analysed. RESULTS A significant increase in MCP1 was observed after 6 month's treatment compared with that before treatment, while TNF-α gradually decreased over the course of treatment. IL-10 levels were negatively correlated with HFMSE scores before treatment, and reductions in IL-10 levels were correlated with improvements in RULM scores. CONCLUSIONS This study suggests that neuroinflammation may be associated with the severity of SMA and with the therapeutic effects of nusinersen, which could have clinical implications in the treatment of SMA.
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Affiliation(s)
- Xi Cheng
- Department of Geriatrics, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ya-Nan Li
- Department of Geriatrics, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ya-Bei Fan
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Hui-Hui Zhao
- Department of Geriatrics, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Ling Li
- Center of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Chao Lu
- Center of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Liang-Hua Zhu
- Center of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China.
| | - Qi Niu
- Department of Geriatrics, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu 210029, China.
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Dong L, Gao L. SP1-Driven FOXM1 Upregulation Induces Dopaminergic Neuron Injury in Parkinson's Disease. Mol Neurobiol 2024; 61:5510-5524. [PMID: 38200349 DOI: 10.1007/s12035-023-03854-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 11/22/2023] [Indexed: 01/12/2024]
Abstract
The aberrant expression of Forkhead box M1 (FOXM1) has been associated with the pathological processes of Parkinson's disease (PD), but the upstream and downstream regulators remain poorly understood. This study sought to examine the underlying mechanism of FOXM1 in dopaminergic neuron injury in PD. Bioinformatics analysis was conducted to pinpoint the differential expression of FOXM1, which was verified in the nigral tissues of rotenone-lesioned mice and dopaminergic neuron MN9D cells. Interactions among SP1, FOXM1, SNAI2, and CXCL12 were analyzed. To evaluate their effects on dopaminergic neuron injury, the lentiviral vector-mediated manipulation of FOXM1, SP1, and CXCL12 was introduced in rotenone-lesioned mice and MN9D cells. SP1, FOXM1, SNAI2, and CXCL12 abundant expression occurred in rotenone-lesioned mice and MN9D cells. Silencing of FOXM1 delayed the rotenone-induced dopaminergic neuron injury in vitro. Mechanistically, SP1 was an upstream transcription factor of FOXM1 and upregulated FOXM1 expression, leading to increased SNAI2 and CXCL12 expression. In vivo, data confirmed that SP1 promoted dopaminergic neuron injury by activating the FOXM1/SNAI2/CXCL12 axis. Our data indicate that SP1 silencing has neuroprotective effects on dopaminergic neurons, which is dependent upon the inactivated FOXM1/SNAI2/CXCL12 axis.
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Affiliation(s)
- Li Dong
- Department of Neurology, The Fourth Affiliated Hospital of China Medical University, No. 4, Chongshan East Road, Huanggu District, Shenyang, 110032, Liaoning Province, People's Republic of China.
| | - Lianbo Gao
- Department of Neurology, The Fourth Affiliated Hospital of China Medical University, No. 4, Chongshan East Road, Huanggu District, Shenyang, 110032, Liaoning Province, People's Republic of China
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Taghizadeh Ghassab F, Shamlou Mahmoudi F, Taheri Tinjani R, Emami Meibodi A, Zali MR, Yadegar A. Probiotics and the microbiota-gut-brain axis in neurodegeneration: Beneficial effects and mechanistic insights. Life Sci 2024; 350:122748. [PMID: 38843992 DOI: 10.1016/j.lfs.2024.122748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/21/2024] [Accepted: 05/23/2024] [Indexed: 06/10/2024]
Abstract
Neurodegenerative diseases (NDs) are a group of heterogeneous disorders with a high socioeconomic burden. Although pharmacotherapy is currently the principal therapeutic approach for the management of NDs, mounting evidence supports the notion that the protracted application of available drugs would abate their dopaminergic outcomes in the long run. The therapeutic application of microbiome-based modalities has received escalating attention in biomedical works. In-depth investigations of the bidirectional communication between the microbiome in the gut and the brain offer a multitude of targets for the treatment of NDs or maximizing the patient's quality of life. Probiotic administration is a well-known microbial-oriented approach to modulate the gut microbiota and potentially influence the process of neurodegeneration. Of note, there is a strong need for further investigation to map out the mechanistic prospects for the gut-brain axis and the clinical efficacy of probiotics. In this review, we discuss the importance of microbiome modulation and hemostasis via probiotics, prebiotics, postbiotics and synbiotics in ameliorating pathological neurodegenerative events. Also, we meticulously describe the underlying mechanism of action of probiotics and their metabolites on the gut-brain axis in different NDs. We suppose that the present work will provide a functional direction for the use of probiotic-based modalities in promoting current practical treatments for the management of neurodegenerative-related diseases.
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Affiliation(s)
- Fatemeh Taghizadeh Ghassab
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Shamlou Mahmoudi
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reyhaneh Taheri Tinjani
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Armitasadat Emami Meibodi
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Wang C, Cui C, Xie X, Chen B, Feng L, Jiang P. Calcitriol attenuates lipopolysaccharide-induced neuroinflammation and depressive-like behaviors by suppressing the P2X7R/NLRP3/caspase-1 pathway. Psychopharmacology (Berl) 2024; 241:1329-1343. [PMID: 38411637 DOI: 10.1007/s00213-024-06565-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 02/22/2024] [Indexed: 02/28/2024]
Abstract
RATIONALE Microglia-mediated neuroinflammation is a vital hallmark in progression of depression, while calcitriol exerts anti-inflammatory effects in the brain. The activation of the P2X7 receptor has an important link to neuroinflammation. However, it is unclear whether calcitriol treatment exerts anti-inflammatory effects in association with P2X7R activation. OBJECTIVE In this study, we assessed the antidepressive and neuroprotective effects of calcitriol on lipopolysaccharide (LPS)-mediated depressive-like behavior, neuroinflammation, and neuronal damage. METHODS In in vitro experiments, the BV2 cells were exposed to LPS, and the protective effects of calcitriol were assessed. For in vivo experiment, thirty-two male C57BL/6 mice were divided into four groups of control, calcitriol, LPS and LPS + calcitriol. Calcitriol was administered at 1 µg/kg for 14 days and LPS at 1 mg/kg once every other day for 14 days. The control group mice were given equal volumes of vehicles. All treatments were delivered intraperitoneally. RESULTS The in vitro experiments showed calcitriol inhibited the release of inflammatory mediators induced by LPS in BV2 cells. The in vivo experiments revealed that calcitriol alleviated LPS-induced behavioral abnormalities and spatial learning impairments. Moreover, calcitriol treatment reduced the mRNA levels of pro-inflammatory cytokines, while increasing anti-inflammatory cytokine levels in the hippocampus. Our results further revealed that calcitriol administration attenuated LPS-induced microglia activation by suppressing P2X7R/NLRP3/caspase-1 signaling. Moreover, calcitriol inhibited apoptosis of neurons in the hippocampus as evidenced by expression of apoptosis-related proteins and TUNEL assay. CONCLUSIONS Collectively, our findings demonstrated that calcitriol exerts antidepressive and neuroprotective effects through the suppression of the P2X7R/NLRP3/caspase-1 pathway both in LPS-induced inflammation models in vitro and in vivo.
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Affiliation(s)
- Changshui Wang
- Department of Neurosurgery, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China
| | - Changmeng Cui
- Department of Neurosurgery, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, China
| | - Xin Xie
- Institute of Translational Pharmacy, Jining Medical Research Academy, Jining, China
- Translational Pharmaceutical Laboratory, Jining First People's Hospital, Shandong First Medical University, Jining, China
| | - Beibei Chen
- Institute of Translational Pharmacy, Jining Medical Research Academy, Jining, China
- Translational Pharmaceutical Laboratory, Jining First People's Hospital, Shandong First Medical University, Jining, China
| | - Lei Feng
- Department of Neurosurgery, Jining First People's Hospital, Shandong First Medical University, Jining, China.
| | - Pei Jiang
- Institute of Translational Pharmacy, Jining Medical Research Academy, Jining, China.
- Translational Pharmaceutical Laboratory, Jining First People's Hospital, Shandong First Medical University, Jining, China.
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Campagno KE, Lu W, Sripinun P, Albalawi F, Cenaj A, Mitchell CH. Retinal microglial cells increase expression and release of IL-1β when exposed to ATP. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.25.600617. [PMID: 38979240 PMCID: PMC11230250 DOI: 10.1101/2024.06.25.600617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Cytokine IL-1β is an early component of inflammatory cascades, with both priming and activation steps required before IL-1β release. Here, the P2X7 receptor (P2X7R) for ATP was shown to both prime and release IL-1β from retinal microglial cells. Isolated retinal microglial cells increased expression of Il1b when stimulated with endogenous receptor agonist extracellular ATP; ATP also rapidly downregulated expression of microglial markers Tmem119 and Cd206. Changes to all three genes were reduced by specific P2X7R antagonist A839977, implicating the P2X7R. Microglial cells expressed the P2X7R on ramifications and responded to receptor agonist BzATP with robust and rapid rises in intracellular Ca 2+ . BzATP increased expression of IL-1β protein colocalizing with CX3CR1-GFP in retinal wholemounts consistent with microglial cells. ATP also triggered release of IL-1β from isolated retinal microglia into the bath; release was inhibited by A839977 and induced by BzATP, supporting a role for the P2X7R in release as well as priming. The IL-1β release triggered by ATP was substantially greater from microglial cells compared to astrocytes from the optic nerve head region. Il1b expression was increased by a transient rise in intraocular pressure and Il1b levels remained elevated 10 days after a single IOP elevation. In summary, this study suggests the P2X7 receptor can both prime IL-1β levels in microglial cells and trigger its release. The P2Y12R was previously identified as a chemoattractant for retinal microglia, suggesting the recruitment of the cells towards the source of released extracellular ATP could position microglia for P2X7R receptor, enabling both priming and release of IL-1β.
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Wang C, Liu Z, Cai J, Xu X. The regulatory effect of intermittent fasting on inflammasome activation in health and disease. Nutr Rev 2024; 82:978-987. [PMID: 37634143 DOI: 10.1093/nutrit/nuad104] [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: 08/29/2023] Open
Abstract
Intermittent fasting (IF), one of the most popular diets, can regulate inflammation and promote health; however, the detailed molecular mechanisms are not fully understood. The present review aims to provide an overview of recent preclinical and clinical studies that have examined the effect of IF on inflammasome signaling, and to discuss the translational gap between preclinical and clinical studies. Three databases (PubMed, Web of Science, and Embase) were searched to identify all relevant preclinical and clinical studies up to October 30, 2022. A total of 1544 studies were identified through the database searches, and 29 preclinical and 10 clinical studies were included. Twenty-three of the 29 preclinical studies reported that IF treatment could reduce inflammasome activation in neurological diseases, metabolic and cardiovascular diseases, immune and inflammatory diseases, gastrointestinal diseases, and pulmonary diseases, and 7 of the 10 clinical studies demonstrated reduced inflammasome activation after IF intervention in both healthy and obese participants. Among various IF regimens, time-restricted eating seemed to be the most effective one in terms of inflammasome regulation, and the efficacy of IF might increase over time. This review highlights the regulatory effect of IF on inflammasome activation in health and disease. Future studies using different IF regimens, in various populations, are needed in order to evaluate its potential to be used alone or as an adjunct therapy in humans to improve health and counteract diseases.
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Affiliation(s)
- Chenchen Wang
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, P. R. China
| | - Zhiqin Liu
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, P. R. China
| | - Jinpeng Cai
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, P. R. China
| | - Xi Xu
- Center for Molecular Metabolism, Nanjing University of Science and Technology, Nanjing, P. R. China
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Suleiman Khoury Z, Sohail F, Wang J, Mendoza M, Raake M, Tahoor Silat M, Reddy Bathinapatta M, Sadeghzadegan A, Meghana P, Paul J. Neuroinflammation: A Critical Factor in Neurodegenerative Disorders. Cureus 2024; 16:e62310. [PMID: 39006715 PMCID: PMC11246070 DOI: 10.7759/cureus.62310] [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] [Accepted: 06/13/2024] [Indexed: 07/16/2024] Open
Abstract
This review offers a comprehensive review of the signals and the paramount role neuroinflammation plays in neurodegenerative diseases such as Alzheimer's, Parkinson's, Huntington's, and amyotrophic lateral sclerosis. The study explores the sophisticated interactions between microglial, astrocytic, and dendritic cells and how neuroinflammation affects long-term neuronal damage and dysfunction. There are specific pathways related to the mentioned inflammatory processes, including Janus kinases/signal transducer and activator of transcriptions, nuclear factor-κB, and mitogen-activated protein kinases pathways. Neuroinflammation is argued to be a double-edged sword, being not only a protective agent that prevents further neuron damage but also the causative factor in more cell injury development. This concept of contrasting inflammation with neuroprotection advocates for the use of therapeutic techniques that seek to modulate neuroinflammatory responses as part of the neurodegeneration treatment. The recent research findings are integrated with the established knowledge to help present a comprehensive image of neuroinflammation's impact on neurodegenerative diseases and its implications for future therapy.
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Affiliation(s)
| | - Fatima Sohail
- Department of Medicine, Tulane University School of Public Health and Tropical Medicine, New Orleans, USA
| | - Jada Wang
- Department of Medicine, St. George's University, Brooklyn, USA
| | - Moises Mendoza
- Department of Health Sciences, Universidad Centroccidental Lisandro Alvarado, Barquisimeto, VEN
| | - Mohammed Raake
- Department of Medicine, Annamalai University, Chennai, IND
| | | | | | - Amirali Sadeghzadegan
- Department of General Practice, Marmara University School of Medicine, Istanbul, TUR
| | - Patel Meghana
- Department of Medicine, Ramaiah University of Applied Sciences, Bengaluru, IND
| | - Janisha Paul
- Department of Medicine, Punjab Institute of Medical Sciences, Jalandhar, IND
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Tondo G, De Marchi F, Bonardi F, Menegon F, Verrini G, Aprile D, Anselmi M, Mazzini L, Comi C. Novel Therapeutic Strategies in Alzheimer's Disease: Pitfalls and Challenges of Anti-Amyloid Therapies and Beyond. J Clin Med 2024; 13:3098. [PMID: 38892809 PMCID: PMC11172489 DOI: 10.3390/jcm13113098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/21/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Alzheimer's disease (AD) causes a significant challenge to global healthcare systems, with limited effective treatments available. This review examines the landscape of novel therapeutic strategies for AD, focusing on the shortcomings of traditional therapies against amyloid-beta (Aβ) and exploring emerging alternatives. Despite decades of research emphasizing the role of Aβ accumulation in AD pathogenesis, clinical trials targeting Aβ have obtained disappointing results, highlighting the complexity of AD pathophysiology and the need for investigating other therapeutic approaches. In this manuscript, we first discuss the challenges associated with anti-Aβ therapies, including limited efficacy and potential adverse effects, underscoring the necessity of exploring alternative mechanisms and targets. Thereafter, we review promising non-Aβ-based strategies, such as tau-targeted therapies, neuroinflammation modulation, and gene and stem cell therapy. These approaches offer new avenues for AD treatment by addressing additional pathological hallmarks and downstream effects beyond Aβ deposition.
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Affiliation(s)
- Giacomo Tondo
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Fabiola De Marchi
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Francesca Bonardi
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Federico Menegon
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Gaia Verrini
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Davide Aprile
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Matteo Anselmi
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Letizia Mazzini
- Neurology Unit, Department of Translational Medicine, Maggiore della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy; (G.T.); (F.B.); (F.M.); (G.V.); (D.A.); (M.A.); (L.M.)
| | - Cristoforo Comi
- Neurology Unit, Department of Translational Medicine, Sant’Andrea Hospital, University of Piemonte Orientale, Corso Abbiate 21, 13100 Vercelli, Italy;
- Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale, 28100 Novara, Italy
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Jin X, Dong W, Chang K, Yan Y. Research on the signaling pathways related to the intervention of traditional Chinese medicine in Parkinson's disease:A literature review. JOURNAL OF ETHNOPHARMACOLOGY 2024; 326:117850. [PMID: 38331124 DOI: 10.1016/j.jep.2024.117850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Parkinson's disease (PD) is the most common progressive neurodegenerative disorder affecting more than 10 million people worldwide and is characterized by the progressive loss of Daergic (DA) neurons in the substantia nigra pars compacta. It has been reported that signaling pathways play a crucial role in the pathogenesis of PD, while the active ingredients of traditional Chinese medicine (TCM) have been found to possess a protective effect against PD. TCM has demonstrated significant potential in mitigating oxidative stress (OS), neuroinflammation, and apoptosis of DA neurons via the regulation of signaling pathways associated with PD. AIM OF THE REVIEW This study discussed and analyzed the signaling pathways involved in the occurrence and development of PD and the mechanism of active ingredients of TCM regulating PD via signaling pathways, with the aim of providing a basis for the development and clinical application of therapeutic strategies for TCM in PD. MATERIALS AND METHODS With "Parkinson's disease", "Idiopathic Parkinson's Disease", "Lewy Body Parkinson's Disease", "Parkinson's Disease, Idiopathic", "Parkinson Disease, Idiopathic", "Parkinson's disorders", "Parkinsonism syndrome", "Traditional Chinese medicine", "Chinese herbal medicine", "active ingredients", "medicinal plants" as the main keywords, PubMed, Web of Science and other online search engines were used for literature retrieval. RESULTS PD exhibits a close association with various signaling pathways, including but not limited to MAPKs, NF-κB, PI3K/Akt, Nrf2/ARE, Wnt/β-catenin, TLR/TRIF, NLRP3, Notch. The therapeutic potential of TCM lies in its ability to regulate these signaling pathways. In addition, the active ingredients of TCM have shown significant effects in improving OS, neuroinflammation, and DA neuron apoptosis in PD. CONCLUSION The active ingredients of TCM have unique advantages in regulating PD-related signaling pathways. It is suggested to combine network pharmacology and bioinformatics to study the specific targets of TCM. This not only provides a new way for the prevention and treatment of PD with the active ingredients of TCM, but also provides a scientific basis for the selection and development of TCM preparations.
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Affiliation(s)
- Xiaxia Jin
- National Key Laboratory of Quality Assurance and Sustainable Utilization of Authentic Medicinal Materials, Chinese Medicine Resource Center, China Academy of Chinese Medical Sciences, Beijing, 100700, China
| | - Wendi Dong
- Foshan Clinical Medical College, Guangzhou University of Traditional Chinese Medicine, Foshan 528000, China
| | - Kaile Chang
- Shaanxi University of Traditional Chinese Medicine, Xianyang, 712046, China
| | - Yongmei Yan
- National Key Laboratory of Quality Assurance and Sustainable Utilization of Authentic Medicinal Materials, Chinese Medicine Resource Center, China Academy of Chinese Medical Sciences, Beijing, 100700, China; Department of Encephalopathy, Affiliated Hospital of Shaanxi University of Traditional Chinese Medicine, Xianyang 712000, China.
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Tanaka M, Vécsei L. A Decade of Dedication: Pioneering Perspectives on Neurological Diseases and Mental Illnesses. Biomedicines 2024; 12:1083. [PMID: 38791045 PMCID: PMC11117868 DOI: 10.3390/biomedicines12051083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024] Open
Abstract
Welcome to Biomedicines' 10th Anniversary Special Issue, a journey through the human mind's labyrinth and complex neurological pathways [...].
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Affiliation(s)
- Masaru Tanaka
- HUN-REN-SZTE Neuroscience Research Group, Hungarian Research Network, University of Szeged, Danube Neuroscience Research Laboratory, Tisza Lajos krt. 113, H-6725 Szeged, Hungary;
| | - László Vécsei
- HUN-REN-SZTE Neuroscience Research Group, Hungarian Research Network, University of Szeged, Danube Neuroscience Research Laboratory, Tisza Lajos krt. 113, H-6725 Szeged, Hungary;
- Department of Neurology, Albert Szent-Györgyi Medical School, University of Szeged, Semmelweis u. 6, H-6725 Szeged, Hungary
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11
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Bocheva G, Bakalov D, Iliev P, Tafradjiiska-Hadjiolova R. The Vital Role of Melatonin and Its Metabolites in the Neuroprotection and Retardation of Brain Aging. Int J Mol Sci 2024; 25:5122. [PMID: 38791160 PMCID: PMC11121732 DOI: 10.3390/ijms25105122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/30/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024] Open
Abstract
While primarily produced in the pineal gland, melatonin's influence goes beyond its well-known role in regulating sleep, nighttime metabolism, and circadian rhythms, in the field of chronobiology. A plethora of new data demonstrates melatonin to be a very powerful molecule, being a potent ROS/RNS scavenger with anti-inflammatory, immunoregulatory, and oncostatic properties. Melatonin and its metabolites exert multiple beneficial effects in cutaneous and systemic aging. This review is focused on the neuroprotective role of melatonin during aging. Melatonin has an anti-aging capacity, retarding the rate of healthy brain aging and the development of age-related neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, Huntington's disease, multiple sclerosis, amyotrophic lateral sclerosis, etc. Melatonin, as well as its metabolites, N1-acetyl-N2-formyl-5-methoxykynuramine (AFMK) and N1-acetyl-5-methoxykynuramine (AMK), can reduce oxidative brain damage by shielding mitochondria from dysfunction during the aging process. Melatonin could also be implicated in the treatment of neurodegenerative conditions, by modifying their characteristic low-grade neuroinflammation. It can either prevent the initiation of inflammatory responses or attenuate the ongoing inflammation. Drawing on the current knowledge, this review discusses the potential benefits of melatonin supplementation in preventing and managing cognitive impairment and neurodegenerative diseases.
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Affiliation(s)
- Georgeta Bocheva
- Department of Pharmacology and Toxicology, Medical University of Sofia, 1431 Sofia, Bulgaria
| | - Dimitar Bakalov
- Department of Physiology and Pathophysiology, Medical University of Sofia, 1431 Sofia, Bulgaria
| | - Petar Iliev
- Department of Physiology and Pathophysiology, Medical University of Sofia, 1431 Sofia, Bulgaria
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12
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Ducza L, Gaál B. The Neglected Sibling: NLRP2 Inflammasome in the Nervous System. Aging Dis 2024; 15:1006-1028. [PMID: 38722788 PMCID: PMC11081174 DOI: 10.14336/ad.2023.0926-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/26/2023] [Indexed: 05/13/2024] Open
Abstract
While classical NOD-like receptor pyrin domain containing protein 1 (NLRP1) and NLRP3 inflammasomal proteins have been extensively investigated, the contribution of NLRP2 is still ill-defined in the nervous system. Given the putative significance of NLRP2 in orchestrating neuroinflammation, further inquiry is needed to gain a better understanding of its connectome, hence its specific targeting may hold a promising therapeutic implication. Therefore, bioinformatical approach for extracting information, specifically in the context of neuropathologies, is also undoubtedly preferred. To the best of our knowledge, there is no review study selectively targeting only NLRP2. Increasing, but still fragmentary evidence should encourage researchers to thoroughly investigate this inflammasome in various animal- and human models. Taken together, herein we aimed to review the current literature focusing on the role of NLRP2 inflammasome in the nervous system and more importantly, we provide an algorithm-based protein network of human NLRP2 for elucidating potentially valuable molecular partnerships that can be the beginning of a new discourse and future therapeutic considerations.
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Affiliation(s)
- László Ducza
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Hungary, Hungary
| | - Botond Gaál
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, Hungary, Hungary
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13
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Ribarič S. The Contribution of Type 2 Diabetes to Parkinson's Disease Aetiology. Int J Mol Sci 2024; 25:4358. [PMID: 38673943 PMCID: PMC11050090 DOI: 10.3390/ijms25084358] [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: 02/29/2024] [Revised: 03/29/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Type 2 diabetes (T2D) and Parkinson's disease (PD) are chronic disorders that have a significant health impact on a global scale. Epidemiological, preclinical, and clinical research underpins the assumption that insulin resistance and chronic inflammation contribute to the overlapping aetiologies of T2D and PD. This narrative review summarises the recent evidence on the contribution of T2D to the initiation and progression of PD brain pathology. It also briefly discusses the rationale and potential of alternative pharmacological interventions for PD treatment.
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Affiliation(s)
- Samo Ribarič
- Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Zaloška 4, 1000 Ljubljana, Slovenia
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14
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Yang K, Zeng L, He Q, Wang S, Xu H, Ge J. Advancements in research on the immune-inflammatory mechanisms mediated by NLRP3 inflammasome in ischemic stroke and the regulatory role of natural plant products. Front Pharmacol 2024; 15:1250918. [PMID: 38601463 PMCID: PMC11004298 DOI: 10.3389/fphar.2024.1250918] [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: 06/30/2023] [Accepted: 01/11/2024] [Indexed: 04/12/2024] Open
Abstract
Ischemic stroke (IS) is a major cause of mortality and disability among adults. Recanalization of blood vessels to facilitate timely reperfusion is the primary clinical approach; however, reperfusion itself may trigger cerebral ischemia-reperfusion injury. Emerging evidence strongly implicates the NLRP3 inflammasome as a potential therapeutic target, playing a key role in cerebral ischemia and reperfusion injury. The aberrant expression and function of NLRP3 inflammasome-mediated inflammation in cerebral ischemia have garnered considerable attention as a recent research focus. Accordingly, this review provides a comprehensive summary of the signaling pathways, pathological mechanisms, and intricate interactions involving NLRP3 inflammasomes in cerebral ischemia-reperfusion injury. Moreover, notable progress has been made in investigating the impact of natural plant products (e.g., Proanthocyanidins, methylliensinine, salidroside, α-asarone, acacia, curcumin, morin, ginsenoside Rd, paeoniflorin, breviscapine, sulforaphane, etc.) on regulating cerebral ischemia and reperfusion by modulating the NLRP3 inflammasome and mitigating the release of inflammatory cytokines. These findings aim to present novel insights that could contribute to the prevention and treatment of cerebral ischemia and reperfusion injury.
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Affiliation(s)
- Kailin Yang
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, School of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Academy of Chinese Medicine, Changsha, Hunan, China
| | - Liuting Zeng
- Graduate School, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qi He
- Department of Critical Care Medicine, People’s Hospital of Ningxiang City, Ningxiang, China
| | - Shanshan Wang
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, School of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Hao Xu
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, School of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Jinwen Ge
- Key Laboratory of Hunan Province for Integrated Traditional Chinese and Western Medicine on Prevention and Treatment of Cardio-Cerebral Diseases, School of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Academy of Chinese Medicine, Changsha, Hunan, China
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15
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Chow TW, Raupp M, Reynolds MW, Li S, Kaeser GE, Chun J. Nucleoside Reverse Transcriptase Inhibitor Exposure Is Associated with Lower Alzheimer's Disease Risk: A Retrospective Cohort Proof-of-Concept Study. Pharmaceuticals (Basel) 2024; 17:408. [PMID: 38675371 PMCID: PMC11053431 DOI: 10.3390/ph17040408] [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: 02/12/2024] [Revised: 03/02/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
Brain somatic gene recombination (SGR) and the endogenous reverse transcriptases (RTs) that produce it have been implicated in the etiology of Alzheimer's disease (AD), suggesting RT inhibitors as novel prophylactics or therapeutics. This retrospective, proof-of-concept study evaluated the incidence of AD in people with human immunodeficiency virus (HIV) with or without exposure to nucleoside RT inhibitors (NRTIs) using de-identified medical claims data. Eligible participants were aged ≥60 years, without pre-existing AD diagnoses, and pursued medical services in the United States from October 2015 to September 2016. Cohorts 1 (N = 46,218) and 2 (N = 32,923) had HIV. Cohort 1 had prescription claims for at least one NRTI within the exposure period; Cohort 2 did not. Cohort 3 (N = 150,819) had medical claims for the common cold without evidence of HIV or antiretroviral therapy. The cumulative incidence of new AD cases over the ensuing 2.75-year observation period was lowest in patients with NRTI exposure and highest in controls. Age- and sex-adjusted hazard ratios showed a significantly decreased risk for AD in Cohort 1 compared with Cohorts 2 (HR 0.88, p < 0.05) and 3 (HR 0.84, p < 0.05). Sub-grouping identified a decreased AD risk in patients with NRTI exposure but without protease inhibitor (PI) exposure. Prospective clinical trials and the development of next-generation agents targeting brain RTs are warranted.
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Affiliation(s)
- Tiffany W. Chow
- IQVIA, Durham, NC 27703, USA; (T.W.C.); (M.R.)
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Mark Raupp
- IQVIA, Durham, NC 27703, USA; (T.W.C.); (M.R.)
| | | | - Siying Li
- IQVIA, Durham, NC 27703, USA; (T.W.C.); (M.R.)
| | - Gwendolyn E. Kaeser
- Center for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Jerold Chun
- Center for Genetic Disorders and Aging Research, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
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16
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Calabrese L, Fiocco Z, Mellett M, Aoki R, Rubegni P, French LE, Satoh TK. Role of the NLRP1 inflammasome in skin cancer and inflammatory skin diseases. Br J Dermatol 2024; 190:305-315. [PMID: 37889986 DOI: 10.1093/bjd/ljad421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/07/2023] [Accepted: 10/21/2023] [Indexed: 10/29/2023]
Abstract
Inflammasomes are cytoplasmic protein complexes that play a crucial role in protecting the host against pathogenic and sterile stressors by initiating inflammation. Upon activation, these complexes directly regulate the proteolytic processing and activation of proinflammatory cytokines interleukin (IL)-1β and IL-18 to induce a potent inflammatory response, and induce a programmed form of cell death called pyroptosis to expose intracellular pathogens to the surveillance of the immune system, thus perpetuating inflammation. There are various types of inflammasome complexes, with the NLRP1 (nucleotide-binding domain, leucine-rich-containing family, pyrin domain-containing-1) inflammasome being the first one identified and currently recognized as the predominant inflammasome sensor protein in human keratinocytes. Human NLRP1 exhibits a unique domain structure, containing both an N-terminal pyrin (PYD) domain and an effector C-terminal caspase recruitment domain (CARD). It can be activated by diverse stimuli, such as viruses, ultraviolet B radiation and ribotoxic stress responses. Specific mutations in NLRP1 or related genes have been associated with rare monogenic skin disorders, such as multiple self-healing palmoplantar carcinoma; familial keratosis lichenoides chronica; autoinflammation with arthritis and dyskeratosis; and dipeptidyl peptidase 9 deficiency. Recent research breakthroughs have also highlighted the involvement of dysfunctions in the NLRP1 pathway in a handful of seemingly unrelated dermatological conditions. These range from monogenic autoinflammatory diseases to polygenic autoimmune diseases such as vitiligo, psoriasis, atopic dermatitis and skin cancer, including squamous cell carcinoma, melanoma and Kaposi sarcoma. Additionally, emerging evidence implicates NLRP1 in systemic lupus erythematosus, pemphigus vulgaris, Addison disease, Papillon-Lefèvre syndrome and leprosy. The aim of this review is to shed light on the implications of pathological dysregulation of the NLRP1 inflammasome in skin diseases and investigate the potential rationale for targeting this pathway as a future therapeutic approach.
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Affiliation(s)
- Laura Calabrese
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
- Institute of Dermatology, Catholic University of the Sacred Heart, Rome, Italy
- Department of Dermatology and Allergy, University Hospital, LMU, Munich, Germany
| | - Zeno Fiocco
- Department of Dermatology and Allergy, University Hospital, LMU, Munich, Germany
| | - Mark Mellett
- Department of Dermatology, University Hospital Zürich, University of Zürich, Zürich, Switzerland
| | - Rui Aoki
- Department of Dermatology and Allergy, University Hospital, LMU, Munich, Germany
| | - Pietro Rubegni
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - Lars E French
- Department of Dermatology and Allergy, University Hospital, LMU, Munich, Germany
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Takashi K Satoh
- Department of Dermatology and Allergy, University Hospital, LMU, Munich, Germany
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17
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Gao Y, Cai L, Wu Y, Jiang M, Zhang Y, Ren W, Song Y, Li L, Lei Z, Wu Y, Zhu L, Li J, Li D, Li G, Luo C, Tao L. Emerging functions and therapeutic targets of IL-38 in central nervous system diseases. CNS Neurosci Ther 2024; 30:e14550. [PMID: 38334236 PMCID: PMC10853902 DOI: 10.1111/cns.14550] [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: 05/08/2023] [Revised: 11/08/2023] [Accepted: 11/20/2023] [Indexed: 02/10/2024] Open
Abstract
Interleukin (IL)-38 is a newly discovered cytokine of the IL-1 family, which binds various receptors (i.e., IL-36R, IL-1 receptor accessory protein-like 1, and IL-1R1) in the central nervous system (CNS). The hallmark physiological function of IL-38 is competitive binding to IL-36R, as does the IL-36R antagonist. Emerging research has shown that IL-38 is abnormally expressed in the serum and brain tissue of patients with ischemic stroke (IS) and autism spectrum disorder (ASD), suggesting that IL-38 may play an important role in neurological diseases. Important advances include that IL-38 alleviates neuromyelitis optica disorder (NMOD) by inhibiting Th17 expression, improves IS by protecting against atherosclerosis via regulating immune cells and inflammation, and reduces IL-1β and CXCL8 release through inhibiting human microglial activity post-ASD. In contrast, IL-38 mRNA is markedly increased and is mainly expressed in phagocytes in spinal cord injury (SCI). IL-38 ablation attenuated SCI by reducing immune cell infiltration. However, the effect and underlying mechanism of IL-38 in CNS diseases remain inadequately characterized. In this review, we summarize the biological characteristics, pathophysiological role, and potential mechanisms of IL-38 in CNS diseases (e.g., NMOD, Alzheimer's disease, ASD, IS, TBI, and SCI), aiming to explore the therapeutic potential of IL-38 in the prevention and treatment of CNS diseases.
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Affiliation(s)
- Yuan Gao
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
- Department of NeurosurgeryPennsylvania State University College of MedicineState CollegePennsylvaniaUSA
- Department of Forensic ScienceWenzhou Medical UniversityWenzhouZhejiangChina
| | - Luwei Cai
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
| | - Yulu Wu
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
| | - Min Jiang
- Department of Forensic Medicine, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Yidan Zhang
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
| | - Wenjing Ren
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
| | - Yirui Song
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
| | - Lili Li
- Department of Child and Adolescent HealthcareChildren's Hospital of Soochow UniversitySuzhouChina
| | - Ziguang Lei
- Department of Forensic ScienceWenzhou Medical UniversityWenzhouZhejiangChina
| | - Youzhuang Wu
- Department of Forensic ScienceWenzhou Medical UniversityWenzhouZhejiangChina
| | - Luwen Zhu
- Department of Forensic ScienceWenzhou Medical UniversityWenzhouZhejiangChina
| | - Jing Li
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
| | - Dongya Li
- Department of OrthopedicsThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Guohong Li
- Department of NeurosurgeryPennsylvania State University College of MedicineState CollegePennsylvaniaUSA
| | - Chengliang Luo
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
| | - Luyang Tao
- Department of Forensic Medicine, School of Basic Medicine and Biological SciencesSoochow UniversitySuzhouChina
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18
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Kim ME, Lee JS. Molecular Foundations of Inflammatory Diseases: Insights into Inflammation and Inflammasomes. Curr Issues Mol Biol 2024; 46:469-484. [PMID: 38248332 PMCID: PMC10813887 DOI: 10.3390/cimb46010030] [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: 11/25/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
Inflammatory diseases are a global health problem affecting millions of people with a wide range of conditions. These diseases, including inflammatory bowel disease (IBD), rheumatoid arthritis (RA), osteoarthritis (OA), gout, and diabetes, impose a significant burden on patients and healthcare systems. A complicated interaction between genetic variables, environmental stimuli, and dysregulated immune responses shows the complex biological foundation of various diseases. This review focuses on the molecular mechanisms underlying inflammatory diseases, including the function of inflammasomes and inflammation. We investigate the impact of environmental and genetic factors on the progression of inflammatory diseases, explore the connection between inflammation and inflammasome activation, and examine the incidence of various inflammatory diseases in relation to inflammasomes.
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Affiliation(s)
| | - Jun Sik Lee
- Department of Biological Science, Immunology Research Lab & BK21-Four Educational Research Group for Age-Associated Disorder Control Technology, Chosun University, Gwangju 61452, Republic of Korea;
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19
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Liu B, Luo W, Huang L, Wei C, Huang X, Liu J, Tao R, Mo Y, Li X. Migration Inhibition Factor Secreted by Peripheral Blood Memory B Cells Binding to CD74-CD44 Receptor Complex Drives Macrophage Behavior in Alzheimer's Disease. Am J Alzheimers Dis Other Demen 2024; 39:15333175241238577. [PMID: 38491918 PMCID: PMC10944588 DOI: 10.1177/15333175241238577] [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: 03/18/2024]
Abstract
Dysregulation of the peripheral immune system is be involved in the neuroinflammation in Alzheimer disease (AD) and accelerate the disease progression. The contribution of immune cells, particularly B cells, to AD pathogenesis has gained attention in recent research. In this study, we investigated the role of Peripheral Blood Memory B cells (PBMBs) and their secreted Migration Inhibition Factor (MIF) in driving macrophage behavior in AD based on the scRNA-seq technique, immunofluorescence and flow cytometry. We discovered that MIF binds to the CD74-CD44 receptor complex on macrophages, influencing their behavior. The dysregulated macrophage response hampers the clearance of amyloid-beta (Aβ) plaques, exacerbating AD pathology. Targeting the MIF-CD74-CD44 signal pathway may hold therapeutic potential in modulating macrophage activity and mitigating neuroinflammation in AD. This study provides a further understanding of peripheral immune cells dysregulated in AD.
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Affiliation(s)
- Bo Liu
- Department of Neurology, The First Clinical Medical College of Jinan University, Jinan University, Guangzhou, China
- Department of Geriatric Neurology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Wei Luo
- Department of Physical Examination Center, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Ling Huang
- Department of Neurology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Chunying Wei
- Department of Geriatric Neurology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Xiaorui Huang
- Department of Neurology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Jun Liu
- Department of Geriatric Neurology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Ran Tao
- Department of Geriatric Neurology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Yingmin Mo
- Department of Geriatric Neurology, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Xuebin Li
- Department of Neurology, The First Clinical Medical College of Jinan University, Jinan University, Guangzhou, China
- Department of Neurology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
- Department of Neurology, West Guangxi Key Laboratory for Prevention and Treatment of High-Incidence Diseases, Youjiang Medical University for Nationalities, Baise, China
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20
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Kwakowsky A, Chawdhary B, de Souza A, Meyer E, Kaye AH, Green CR, Stylli SS, Danesh-Meyer H. Tonabersat Significantly Reduces Disease Progression in an Experimental Mouse Model of Multiple Sclerosis. Int J Mol Sci 2023; 24:17454. [PMID: 38139284 PMCID: PMC10744318 DOI: 10.3390/ijms242417454] [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: 11/30/2023] [Revised: 12/11/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Multiple sclerosis (MS) is a neurodegenerative disease marked by chronic neuroinflammation thought to be mediated by the inflammasome pathway. Connexin 43 (Cx43) hemichannels contribute to the activation of the inflammasome through the release of adenosine triphosphate (ATP) inflammasome activation signals. The objective of the study was to evaluate if the Cx43 hemichannel blocker, tonabersat, is effective in modulating the inflammatory response and reducing disability in the myelin oligodendrocyte glycoprotein 35-55-induced experimental autoimmune encephalomyelitis (MOG35-55 EAE) model of MS. Here, we show that the Cx43 hemichannel blocking drug, tonabersat, significantly reduced expression of neuroinflammatory markers for microglial activation (ionized calcium-binding adapter molecule 1 (Iba1)) and astrogliosis (glial fibrillary acidic protein (GFAP)) while preserving myelin basic protein (MBP) expression levels in the corpus callosum, motor cortex, and striatum regions of the brain in MOG35-55 EAE mice. Reduced NOD-like receptor protein 3 (NLRP3) inflammasome complex assembly and Caspase-1 activation confirmed the drug's mode of action. MOG35-55 EAE mice showed clinical signs of MS, but MOG35-55 EAE mice treated with tonabersat retained behavior closer to normal. These data suggest that clinical trial phase IIb-ready tonabersat may merit further investigation as a promising candidate for MS treatment.
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Affiliation(s)
- Andrea Kwakowsky
- Department of Anatomy and Medical Imaging, Centre for Brain Research, Faculty of Medical and Health Science, University of Auckland, Auckland 1023, New Zealand; (B.C.); (A.d.S.); (E.M.)
- Pharmacology and Therapeutics, Galway Neuroscience Centre, School of Medicine, Ollscoil na Gaillimhe—University of Galway, H91 W5P7 Galway, Ireland
| | - Bhavya Chawdhary
- Department of Anatomy and Medical Imaging, Centre for Brain Research, Faculty of Medical and Health Science, University of Auckland, Auckland 1023, New Zealand; (B.C.); (A.d.S.); (E.M.)
- Department of Opthalmology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1023, New Zealand; (C.R.G.); (H.D.-M.)
| | - Antonio de Souza
- Department of Anatomy and Medical Imaging, Centre for Brain Research, Faculty of Medical and Health Science, University of Auckland, Auckland 1023, New Zealand; (B.C.); (A.d.S.); (E.M.)
- Department of Opthalmology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1023, New Zealand; (C.R.G.); (H.D.-M.)
| | - Emily Meyer
- Department of Anatomy and Medical Imaging, Centre for Brain Research, Faculty of Medical and Health Science, University of Auckland, Auckland 1023, New Zealand; (B.C.); (A.d.S.); (E.M.)
- Department of Opthalmology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1023, New Zealand; (C.R.G.); (H.D.-M.)
| | - Andrew H. Kaye
- Department of Surgery, University of Melbourne, Melbourne, VIC 3010, Australia; (A.H.K.); (S.S.S.)
- Department of Neurosurgery, Hadassah Hebrew University Hospital, Jerusalem 91120, Israel
| | - Colin R. Green
- Department of Opthalmology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1023, New Zealand; (C.R.G.); (H.D.-M.)
| | - Stanley S. Stylli
- Department of Surgery, University of Melbourne, Melbourne, VIC 3010, Australia; (A.H.K.); (S.S.S.)
- Department of Neurosurgery, The Royal Melbourne Hospital, Parkville, VIC 3052, Australia
| | - Helen Danesh-Meyer
- Department of Opthalmology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1023, New Zealand; (C.R.G.); (H.D.-M.)
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21
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Tylek K, Trojan E, Leśkiewicz M, Ghafir El Idrissi I, Lacivita E, Leopoldo M, Basta-Kaim A. Microglia Depletion Attenuates the Pro-Resolving Activity of the Formyl Peptide Receptor 2 Agonist AMS21 Related to Inhibition of Inflammasome NLRP3 Signalling Pathway: A Study of Organotypic Hippocampal Cultures. Cells 2023; 12:2570. [PMID: 37947648 PMCID: PMC10648897 DOI: 10.3390/cells12212570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/16/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023] Open
Abstract
Microglial cells have been demonstrated to be significant resident immune cells that maintain homeostasis under physiological conditions. However, prolonged or excessive microglial activation leads to disturbances in the resolution of inflammation (RoI). Formyl peptide receptor 2 (FPR2) is a crucial player in the RoI, interacting with various ligands to induce distinct conformational changes and, consequently, diverse biological effects. Due to the poor pharmacokinetic properties of endogenous FPR2 ligands, the aim of our study was to evaluate the pro-resolving effects of a new ureidopropanamide agonist, compound AMS21, in hippocampal organotypic cultures (OHCs) stimulated with lipopolysaccharide (LPS). Moreover, to assess whether AMS21 exerts its action via FPR2 specifically located on microglial cells, we conducted a set of experiments in OHCs depleted of microglial cells using clodronate. We demonstrated that the protective and anti-inflammatory activity of AMS21 manifested as decreased levels of lactate dehydrogenase (LDH), nitric oxide (NO), and proinflammatory cytokines IL-1β and IL-6 release evoked by LPS in OHCs. Moreover, in LPS-stimulated OHCs, AMS21 treatment downregulated NLRP3 inflammasome-related factors (CASP1, NLRP3, PYCARD) and this effect was mediated through FPR2 because it was blocked by the FPR2 antagonist WRW4 pre-treatment. Importantly this beneficial effect of AMS21 was only observed in the presence of microglial FPR2, and absent in OHCs depleted with microglial cells using clodronate. Our results strongly suggest that the compound AMS21 exerts, at nanomolar doses, protective and anti-inflammatory properties and an FPR2 receptor located specifically on microglial cells mediates the anti-inflammatory response of AMS21. Therefore, microglial FPR2 represents a promising target for the enhancement of RoI.
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Affiliation(s)
- Kinga Tylek
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343 Kraków, Poland; (K.T.); (E.T.); (M.L.)
| | - Ewa Trojan
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343 Kraków, Poland; (K.T.); (E.T.); (M.L.)
| | - Monika Leśkiewicz
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343 Kraków, Poland; (K.T.); (E.T.); (M.L.)
| | - Imane Ghafir El Idrissi
- Department of Pharmacy—Drug Sciences, University of Bari, Via Orabona 4, 70125 Bari, Italy; (I.G.E.I.); (E.L.); (M.L.)
| | - Enza Lacivita
- Department of Pharmacy—Drug Sciences, University of Bari, Via Orabona 4, 70125 Bari, Italy; (I.G.E.I.); (E.L.); (M.L.)
| | - Marcello Leopoldo
- Department of Pharmacy—Drug Sciences, University of Bari, Via Orabona 4, 70125 Bari, Italy; (I.G.E.I.); (E.L.); (M.L.)
| | - Agnieszka Basta-Kaim
- Laboratory of Immunoendocrinology, Department of Experimental Neuroendocrinology, Maj Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343 Kraków, Poland; (K.T.); (E.T.); (M.L.)
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22
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Pan I, Issac PK, Rahman MM, Guru A, Arockiaraj J. Gut-Brain Axis a Key Player to Control Gut Dysbiosis in Neurological Diseases. Mol Neurobiol 2023:10.1007/s12035-023-03691-3. [PMID: 37851313 DOI: 10.1007/s12035-023-03691-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 10/02/2023] [Indexed: 10/19/2023]
Abstract
Parkinson's disease is a chronic neuropathy characterised by the formation of Lewy bodies (misfolded alpha-synuclein) in dopaminergic neurons of the substantia nigra and other parts of the brain. Dopaminergic neurons play a vital role in generating both motor and non-motor symptoms. Finding therapeutic targets for Parkinson's disease (PD) is hindered due to an incomplete understanding of the disease's pathophysiology. Existing evidence suggests that the gut microbiota participates in the pathogenesis of PD via immunological, neuroendocrine, and direct neural mechanisms. Gut microbial dysbiosis triggers the loss of dopaminergic neurons via mitochondrial dysfunction. Gut dysbiosis triggers bacterial overgrowth in the small intestine, which increases the permeability barrier and induces systemic inflammation. It results in excessive stimulation of the innate immune system. In addition to that, activation of enteric neurons and enteric glial cells initiates the aggregation of alpha-synuclein. This alpha-synucleinopathy thus affects all levels of the brain-gut axis, including the central, autonomic, and enteric nervous systems. Though the neurobiological signaling cascade between the gut microbiome and the central nervous system is poorly understood, gut microbial metabolites may serve as a promising therapeutic strategy for PD. This article summarises all the known possible ways of bidirectional signal communication, i.e., the "gut-brain axis," where microbes from the middle gut interact with the brain and vice versa, and highlights a unique way to treat neurodegenerative diseases by maintaining homeostasis. The tenth cranial nerve (vagus nerve) plays a significant part in this signal communication. However, the leading regulatory factor for this axis is a diet that helps with microbial colonisation and brain function. Short-chain fatty acids (SCFAs), derived from microbially fermented dietary fibres, link host nutrition to maintain intestinal homeostasis. In addition to that, probiotics modulate cognitive function and the metabolic and behavioural conditions of the body. As technology advances, new techniques will emerge to study the tie-up between gut microbes and neuronal diseases.
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Affiliation(s)
- Ieshita Pan
- Institute of Biotechnology, Department of Medical Biotechnology and Integrative Physiology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai, Tamil Nadu, 602105, India.
| | - Praveen Kumar Issac
- Institute of Biotechnology, Department of Medical Biotechnology and Integrative Physiology, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai, Tamil Nadu, 602105, India
| | - Md Mostafizur Rahman
- Laboratory of Environmental Health and Ecotoxicology, Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, Bangladesh
| | - Ajay Guru
- Department of Cariology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.
| | - Jesu Arockiaraj
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulatur, Chengalpattu District, Tamil Nadu, 603203, India.
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Vallese A, Cordone V, Pecorelli A, Valacchi G. Ox-inflammasome involvement in neuroinflammation. Free Radic Biol Med 2023; 207:161-177. [PMID: 37442280 DOI: 10.1016/j.freeradbiomed.2023.07.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/26/2023] [Accepted: 07/07/2023] [Indexed: 07/15/2023]
Abstract
Neuroinflammation plays a crucial role in the onset and the progression of several neuropathologies, from neurodegenerative disorders to migraine, from Rett syndrome to post-COVID 19 neurological manifestations. Inflammasomes are cytosolic multiprotein complexes of the innate immune system that fuel inflammation. They have been under study for the last twenty years and more recently their involvement in neuro-related conditions has been of great interest as possible therapeutic target. The role of oxidative stress in inflammasome activation has been described, however the exact way of action of specific endogenous and exogenous oxidants needs to be better clarified. In this review, we provide the current knowledge on the involvement of inflammasome in the main neuropathologies, emphasizing the importance to further clarify the role of oxidative stress in its activation including the role of mitochondria in inflammasome-induced neuroinflammation.
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Affiliation(s)
- Andrea Vallese
- Department of Environmental Sciences and Prevention, University of Ferrara, Ferrara, Italy
| | - Valeria Cordone
- Department of Environmental Sciences and Prevention, University of Ferrara, Ferrara, Italy
| | - Alessandra Pecorelli
- Department of Environmental Sciences and Prevention, University of Ferrara, Ferrara, Italy
| | - Giuseppe Valacchi
- Department of Environmental Sciences and Prevention, University of Ferrara, Ferrara, Italy; Department of Animal Science, North Carolina State University, 28081, Kannapolis, USA; Department of Food and Nutrition, Kyung Hee University, Seoul, South Korea.
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24
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Fan LY, Yang J, Liu RY, Kong Y, Guo GY, Xu YM. Integrating single-nucleus sequence profiling to reveal the transcriptional dynamics of Alzheimer's disease, Parkinson's disease, and multiple sclerosis. J Transl Med 2023; 21:649. [PMID: 37735671 PMCID: PMC10515258 DOI: 10.1186/s12967-023-04516-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 09/08/2023] [Indexed: 09/23/2023] Open
Abstract
BACKGROUND Alzheimer's disease (AD), Parkinson's disease (PD), and multiple sclerosis (MS) are three nervous system diseases that partially overlap clinically and genetically. However, bulk RNA-sequencing did not accurately detect the core pathogenic molecules in them. The availability of high-quality single cell RNA-sequencing data of post-mortem brain collections permits the generation of a large-scale gene expression in different cells in human brain, focusing on the molecular features and relationships between diseases and genes. We integrated single-nucleus RNA-sequencing (snRNA-seq) datasets of human brains with AD, PD, and MS to identify transcriptomic commonalities and distinctions among them. METHODS The snRNA-seq datasets were downloaded from Gene Expression Omnibus (GEO) database. The Seurat package was used for snRNA-seq data processing. The uniform manifold approximation and projection (UMAP) were utilized for cluster identification. The FindMarker function in Seurat was used to identify the differently expressed genes. Functional enrichment analysis was carried out using the Gene Set Enrichment Analysis (GSEA) and Gene ontology (GO). The protein-protein interaction (PPI) analysis of differentially expressed genes (DEGs) was analyzed using STRING database ( http://string-db.org ). SCENIC analysis was performed using utilizing pySCENIC (v0.10.0) based on the hg19-tss-centered-10 kb-10species databases. The analysis of potential therapeutic drugs was analyzed on Connectivity Map ( https://clue.io ). RESULTS The gene regulatory network analysis identified several hub genes regulated in AD, PD, and MS, in which HSPB1 and HSPA1A were key molecules. These upregulated HSP family genes interact with ribosome genes in AD and MS, and with immunomodulatory genes in PD. We further identified several transcriptional regulators (SPI1, CEBPA, TFE3, GRHPR, and TP53) of the hub genes, which has important implications for uncovering the molecular crosstalk among AD, PD, and MS. Arctigenin was identified as a potential therapeutic drug for AD, PD, and MS. CONCLUSIONS Together, the integrated snRNA-seq data and findings have significant implications for unraveling the shared and unique molecular crosstalk among AD, PD, and MS. HSPB1 and HSPA1A as promising targets involved in the pathological mechanisms of neurodegenerative diseases. Additionally, the identification of arctigenin as a potential therapeutic drug for AD, PD, and MS further highlights its potential in treating these neurological disorders. These discoveries lay the groundwork for future research and interventions to enhance our understanding and treatment of AD, PD, and MS.
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Affiliation(s)
- Li-Yuan Fan
- Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
- Academy of Medical Sciences of Zhengzhou University, Zhengzhou, China
| | - Jing Yang
- Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Ruo-Yu Liu
- Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Ying Kong
- Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China
| | - Guang-Yu Guo
- Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.
| | - Yu-Ming Xu
- Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.
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Li Z, Shi Y, Wang Y, Qi H, Chen H, Li J, Li L. Cadmium-induced pyroptosis is mediated by PERK/TXNIP/NLRP3 signaling in SH-SY5Y cells. ENVIRONMENTAL TOXICOLOGY 2023; 38:2219-2227. [PMID: 37300869 DOI: 10.1002/tox.23861] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/10/2023] [Accepted: 05/28/2023] [Indexed: 06/12/2023]
Abstract
Cadmium (Cd) is a hypertoxic heavy metal that may be exposed to environmental pollutants by humans and animals. It can lead to cognitive disfunction, and is linked to neurodegenerative diseases. Cadmium reportedly can induce endoplasmic reticulum (ER) stress, but few studies have concentrated on it in nerve cells, and the connection between ER stress and neuroinflammation. In this study, in vitro experiments on SH-SY5Y neuroblastoma cells were carried out. We aimed at exploring whether Cd attributed to the cell pyroptosis and the role of PERK in promoting this form of cell damage which can induce strong inflammatory responses. Our results demonstrated that CdCl2 treatment induced excess reactive oxygen species (ROS) production, caused significant modifications in the expression of PERK and increased TXNIP, NLRP3, IL-1β, IL-18, and caspase1 in SH-SY5Y cells. In addition, scavenging ROS with N-acetylcysteine or inhibiting the expression of PERK by using GSK2606414, rescued the SH-SY5Y cells from cadmium-induced pyroptosis. In conclusion, the results suggest that Cd induces pyroptotic death of SH-SY5Y cells through ER stress, and this may be the potential mechanism of Cd incurring neurological diseases.
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Affiliation(s)
- Zhihui Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, School of Life Science, Hubei University, Wuhan, China
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Yan Shi
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Yougang Wang
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Haomin Qi
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Haiyu Chen
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Jinquan Li
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Li Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, School of Life Science, Hubei University, Wuhan, China
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26
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Wang T, Yin Y, Jiang X, Ruan Y, Xu J, Hu X, Li T, Chu L, Li L. Exploring the mechanism of luteolin by regulating microglia polarization based on network pharmacology and in vitro experiments. Sci Rep 2023; 13:13767. [PMID: 37612462 PMCID: PMC10447507 DOI: 10.1038/s41598-023-41101-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/22/2023] [Indexed: 08/25/2023] Open
Abstract
Neuroinflammation manifests following injury to the central nervous system (CNS) and M1/M2 polarization of microglia is closely associated with the development of this neuroinflammation. In this study, multiple databases were used to collect targets regarding luteolin and microglia polarization. After obtaining a common target, a protein-protein interaction (PPI) network was created and further analysis was performed to obtain the core network. Molecular docking of the core network with luteolin after gene enrichment analysis. In vitro experiments were used to examine the polarization of microglia and the expression of related target proteins. A total of 77 common targets were obtained, and the core network obtained by further analysis contained 38 proteins. GO and KEGG analyses revealed that luteolin affects microglia polarization in regulation of inflammatory response as well as the interleukin (IL)-17 and tumor necrosis factor (TNF) signaling pathways. Through in vitro experiments, we confirmed that the use of luteolin reduced the expression of inducible nitric oxide synthase (iNOS), IL-6, TNF-α, p-NFκBIA (p-IκB-α), p-NFκB p65, and MMP9, while upregulating the expression of Arg-1 and IL-10. This study reveals various potential mechanisms by which luteolin induces M2 polarization in microglia to inhibit the neuroinflammatory response.
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Affiliation(s)
- Tianyue Wang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yuanjun Yin
- Department of Physiology, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xinyu Jiang
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yanmin Ruan
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Jiawen Xu
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Xiaowei Hu
- Department of Physiology, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Tianyi Li
- Department of Physiology, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Lisheng Chu
- Department of Physiology, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Lin Li
- Department of Physiology, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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Zhang W, Xiao D, Mao Q, Xia H. Role of neuroinflammation in neurodegeneration development. Signal Transduct Target Ther 2023; 8:267. [PMID: 37433768 PMCID: PMC10336149 DOI: 10.1038/s41392-023-01486-5] [Citation(s) in RCA: 162] [Impact Index Per Article: 162.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 03/22/2023] [Accepted: 05/07/2023] [Indexed: 07/13/2023] Open
Abstract
Studies in neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease and Amyotrophic lateral sclerosis, Huntington's disease, and so on, have suggested that inflammation is not only a result of neurodegeneration but also a crucial player in this process. Protein aggregates which are very common pathological phenomenon in neurodegeneration can induce neuroinflammation which further aggravates protein aggregation and neurodegeneration. Actually, inflammation even happens earlier than protein aggregation. Neuroinflammation induced by genetic variations in CNS cells or by peripheral immune cells may induce protein deposition in some susceptible population. Numerous signaling pathways and a range of CNS cells have been suggested to be involved in the pathogenesis of neurodegeneration, although they are still far from being completely understood. Due to the limited success of traditional treatment methods, blocking or enhancing inflammatory signaling pathways involved in neurodegeneration are considered to be promising strategies for the therapy of neurodegenerative diseases, and many of them have got exciting results in animal models or clinical trials. Some of them, although very few, have been approved by FDA for clinical usage. Here we comprehensively review the factors affecting neuroinflammation and the major inflammatory signaling pathways involved in the pathogenicity of neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, and Amyotrophic lateral sclerosis. We also summarize the current strategies, both in animal models and in the clinic, for the treatment of neurodegenerative diseases.
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Affiliation(s)
- Weifeng Zhang
- Laboratory of Gene Therapy, Department of Biochemistry, College of Life Sciences, Shaanxi Normal University, 199 South Chang'an Road, Xi'an, 710062, P.R. China
| | - Dan Xiao
- The State Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Air Force Medical University, No. 169 Changle West Road, Xi'an, 710032, P.R. China
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No. 169 Changle West Road, Xi'an, 710032, China
| | - Qinwen Mao
- Department of Pathology, University of Utah, Huntsman Cancer Institute, 2000 Circle of Hope Drive, Salt Lake City, UT, 84112, USA
| | - Haibin Xia
- Laboratory of Gene Therapy, Department of Biochemistry, College of Life Sciences, Shaanxi Normal University, 199 South Chang'an Road, Xi'an, 710062, P.R. China.
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28
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Saiyed N, Yilmaz A, Vishweswariah S, Maiti AK, Ustun I, Bartolone S, Brown-Hughes T, Thorpe RJ, Osentoski T, Ruff S, Pai A, Maddens M, Imam K, Graham SF. Urinary Cytokines as Potential Biomarkers of Mild Cognitive Impairment and Alzheimer's Disease: A Pilot Study. J Alzheimers Dis Rep 2023; 7:649-657. [PMID: 37483327 PMCID: PMC10357120 DOI: 10.3233/adr-220081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 05/13/2023] [Indexed: 07/25/2023] Open
Abstract
Background Alzheimer's disease (AD) is the most common form of dementia, accounting for 80% of all cases. Mild cognitive impairment (MCI) is a transitional state between normal aging and AD. Early detection is crucial, as irreversible brain damage occurs before symptoms manifest. Objective This study aimed to identify potential biomarkers for early detection of AD by analyzing urinary cytokine concentrations. We investigated 37 cytokines in AD, MCI, and cognitively normal individuals (NC), assessing their associations with AD development. Methods Urinary cytokine concentrations were measured in AD (n = 25), MCI (n = 25), and NC (n = 26) patients. IL6ST and MMP-2 levels were compared between AD and NC, while TNFRSF8, IL6ST, and IL-19 were assessed in AD versus MCI. Diagnostic models distinguished AD from NC, and in-silico analysis explored molecular mechanisms related to AD. Results Significant perturbations in IL6ST and MMP-2 concentrations were observed in AD urine compared to NC, suggesting their potential as biomarkers. TNFRSF8, IL6ST, and IL-19 differed significantly between AD and MCI, implicating them in disease progression. Diagnostic models exhibited promising performance (AUC: 0.59-0.79, sensitivity: 0.72-0.80, specificity: 0.56-0.78) in distinguishing AD from NC. In-silico analysis revealed molecular insights, including relevant non-coding RNAs, microRNAs, and transcription factors. Conclusion This study establishes significant associations between urinary cytokine concentrations and AD and MCI. IL6ST, MMP-2, TNFRSF8, IL6ST, and IL-19 emerge as potential biomarkers for early detection of AD. In-silico analysis enhances understanding of molecular mechanisms in AD. Further validation and exploration of these biomarkers in larger cohorts are warranted to assess their clinical utility.
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Affiliation(s)
- Nazia Saiyed
- Beaumont Research Institute, Metabolomics Department, Royal Oak, MI, USA
| | - Ali Yilmaz
- Beaumont Research Institute, Metabolomics Department, Royal Oak, MI, USA
- Oakland University-William Beaumont School of Medicine, Rochester, MI, USA
| | | | - Amit K. Maiti
- Department of Genetics and Genomics, Mydnavar, Southfield, MI, USA
| | - Ilyas Ustun
- College of Computing and Digital Media, DePaul University, Chicago, IL, USA
| | - Sarah Bartolone
- Department of Urology, Beaumont Research Institute, Royal Oak, MI, USA
| | | | - Roland J. Thorpe
- Department of Health, Behavior, and Society, Program for Research on Men’s Health, Hopkins Center for Health Disparities Solutions, Johns Hopkins Alzheimer’s Disease Resource Center for Minority Aging Research, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Tammy Osentoski
- Department of Alzheimer’s Research, Beaumont Health, Royal Oak, MI, USA
| | - Stacey Ruff
- Beaumont Health, Geriatric Medicine, Berkley, MI, USA
| | - Amita Pai
- Beaumont Health, Geriatric Medicine, Berkley, MI, USA
| | | | - Khaled Imam
- Beaumont Health, Geriatric Medicine, Berkley, MI, USA
| | - Stewart F. Graham
- Beaumont Research Institute, Metabolomics Department, Royal Oak, MI, USA
- Oakland University-William Beaumont School of Medicine, Rochester, MI, USA
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29
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Seyedsadr M, Wang Y, Elzoheiry M, Shree Gopal S, Jang S, Duran G, Chervoneva I, Kasimoglou E, Wrobel JA, Hwang D, Garifallou J, Zhang X, Khan TH, Lorenz U, Su M, Ting JP, Broux B, Rostami A, Miskin D, Markovic-Plese S. IL-11 induces NLRP3 inflammasome activation in monocytes and inflammatory cell migration to the central nervous system. Proc Natl Acad Sci U S A 2023; 120:e2221007120. [PMID: 37339207 PMCID: PMC10293805 DOI: 10.1073/pnas.2221007120] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 04/26/2023] [Indexed: 06/22/2023] Open
Abstract
The objective of this study is to examine IL-11-induced mechanisms of inflammatory cell migration to the central nervous system (CNS). We report that IL-11 is produced at highest frequency by myeloid cells among the peripheral blood mononuclear cell (PBMC) subsets. Patients with relapsing-remitting multiple sclerosis (RRMS) have an increased frequency of IL-11+ monocytes, IL-11+ and IL-11R+ CD4+ lymphocytes, and IL-11R+ neutrophils in comparison to matched healthy controls. IL-11+ and granulocyte-macrophage colony-stimulating factor (GM-CSF)+ monocytes, CD4+ lymphocytes, and neutrophils accumulate in the cerebrospinal fluid (CSF). The effect of IL-11 in-vitro stimulation, examined using single-cell RNA sequencing, revealed the highest number of differentially expressed genes in classical monocytes, including up-regulated NFKB1, NLRP3, and IL1B. All CD4+ cell subsets had increased expression of S100A8/9 alarmin genes involved in NLRP3 inflammasome activation. In IL-11R+-sorted cells from the CSF, classical and intermediate monocytes significantly up-regulated the expression of multiple NLRP3 inflammasome-related genes, including complement, IL18, and migratory genes (VEGFA/B) in comparison to blood-derived cells. Therapeutic targeting of this pathway with αIL-11 mAb in mice with RR experimental autoimmune encephalomyelitis (EAE) decreased clinical scores, CNS inflammatory infiltrates, and demyelination. αIL-11 mAb treatment decreased the numbers of NFκBp65+, NLRP3+, and IL-1β+ monocytes in the CNS of mice with EAE. The results suggest that IL-11/IL-11R signaling in monocytes represents a therapeutic target in RRMS.
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Affiliation(s)
- Maryamsadat Seyedsadr
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, CA90095
| | - Yan Wang
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - Manal Elzoheiry
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - Sowmya Shree Gopal
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - Soohwa Jang
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - Gayel Duran
- Biomedical Research Institute, Department of Immunology, Hasselt University, Hasselt 3590, Belgium
| | - Inna Chervoneva
- Department of Pharmacology, Biostatistics, Physiology and Cancer Biology, Thomas Jefferson University, Philadelphia, PA19107
| | - Ezgi Kasimoglou
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - John A. Wrobel
- Linberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC27599
| | - Daniel Hwang
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - James Garifallou
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA19104
| | - Xin Zhang
- Department of Orthopedic Surgery, Duke University, Durham, NC27599
| | - Tabish H. Khan
- Divison of Laboratory and Genomic Medicine, Department of Pathology, Washington University School of Medicine, St. Louis, MO63110
| | - Ulrike Lorenz
- Divison of Laboratory and Genomic Medicine, Department of Pathology, Washington University School of Medicine, St. Louis, MO63110
| | - Maureen Su
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, CA90095
| | - Jenny P. Ting
- Linberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC27599
| | - Bieke Broux
- Biomedical Research Institute, Department of Immunology, Hasselt University, Hasselt 3590, Belgium
| | - Abdolmohamad Rostami
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - Dhanashri Miskin
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
| | - Silva Markovic-Plese
- Department of Neurology, Neuroimmunology Division, Thomas Jefferson University, Philadelphia, PA19107
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30
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Boraschi D, Italiani P, Migliorini P, Bossù P. Cause or consequence? The role of IL-1 family cytokines and receptors in neuroinflammatory and neurodegenerative diseases. Front Immunol 2023; 14:1128190. [PMID: 37223102 PMCID: PMC10200871 DOI: 10.3389/fimmu.2023.1128190] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/11/2023] [Indexed: 05/25/2023] Open
Abstract
Cytokines and receptors of the IL-1 family are key mediators in innate immune and inflammatory reactions in physiological defensive conditions, but are also significantly involved in immune-mediated inflammatory diseases. Here, we will address the role of cytokines of the IL-1 superfamily and their receptors in neuroinflammatory and neurodegenerative diseases, in particular Multiple Sclerosis and Alzheimer's disease. Notably, several members of the IL-1 family are present in the brain as tissue-specific splice variants. Attention will be devoted to understanding whether these molecules are involved in the disease onset or are effectors of the downstream degenerative events. We will focus on the balance between the inflammatory cytokines IL-1β and IL-18 and inhibitory cytokines and receptors, in view of future therapeutic approaches.
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Affiliation(s)
- Diana Boraschi
- Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, China
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Naples, Italy
- Stazione Zoologica Anton Dohrn (SZN), Napoli, Italy
- China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation, Shenzhen, China
| | - Paola Italiani
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Naples, Italy
- Stazione Zoologica Anton Dohrn (SZN), Napoli, Italy
- China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation, Shenzhen, China
| | - Paola Migliorini
- Clinical Immunology and Allergy Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Paola Bossù
- Laboratory of Experimental Neuro-psychobiology, Department of Clinical and Behavioral Neurology, Santa Lucia Foundation, Rome, Italy
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31
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Hansen N, Rentzsch K, Hirschel S, Bartels C, Wiltfang J, Malchow B. Long-Term Course of Neural Autoantibody-Associated Psychiatric Disorders: Retrospective Data from a Specifically Immunopsychiatric Outpatient Clinic. Antibodies (Basel) 2023; 12:antib12020034. [PMID: 37218900 DOI: 10.3390/antib12020034] [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: 02/13/2023] [Revised: 04/20/2023] [Accepted: 05/04/2023] [Indexed: 05/24/2023] Open
Abstract
Background: Autoantibody-associated psychiatric disorders are a new terrain that is currently underrepresented considering immunopsychiatry's potential importance for therapeutic aspects. The aim of our research was thus to present initial pilot data on the long-term clinical course of our patients in an outpatient clinic specializing in autoantibody-associated psychiatric disorders. Methods: Thirty-seven patients were examined clinically in our outpatient clinic at regular intervals over a 1.5-year period. We collected clinical data on their demographics, psychopathology, and cognition, and magnetic resonance imaging (MRI) and cerebrospinal fluid (CSF) data as well as the status of neural autoantibodies in blood and/or serum. Results: Our main finding was that affective, psychotic, and cognitive symptoms did not change significantly over the 1.5-year period, thus revealing no progression. We divided the entire cohort of autoantibody-positive patients (n = 32) into subgroups consisting of patients with dementia (n = 14), mild cognitive impairment (MCI) (n = 7), psychotic disorders (n = 6), and a CSF profile of Alzheimer's disease (n = 6). Relying on established classification schemes, we identified the following percentages in our autoantibody-positive cohort: 28% with autoimmune encephalitis, 15% with autoimmune psychosis, and 63% with autoimmune psychiatric syndromes. Discussion: These initial pilot results suggest that autoantibody-associated diseases do not show a significantly progressive course in the long-term and are often characterized by impaired verbal memory recall when cognitive impairment progresses to dementia. These initial data need to be verified in larger cohorts. We believe that this pilot study underscores the importance of promoting such a specialized outpatient clinic to better characterize various aspects of autoantibody-mediated psychiatric disorders.
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Affiliation(s)
- Niels Hansen
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075 Göttingen, Germany
| | | | - Sina Hirschel
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Claudia Bartels
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Jens Wiltfang
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075 Göttingen, Germany
- German Center for Neurodegenerative Diseases (DZNE), 37075 Göttingen, Germany
- Neurosciences and Signaling Group, Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Berend Malchow
- Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, 37075 Göttingen, Germany
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Pyrzanowska J. Pharmacological activity of Aspalathus linearis extracts: pre-clinical research in view of prospective neuroprotection. Nutr Neurosci 2023; 26:384-402. [PMID: 35311618 DOI: 10.1080/1028415x.2022.2051955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVES Rooibos tea, a very popular everyday beverage made of Aspalathus linearis plant material and containing multiple polyphenolic compounds, reveals an expectation to positively affect various processes observed in the pathogenesis of neurodegenerative diseases as in the case of consumption of other polyphenol-abundant food products. METHODS This review is based on available data from pre-clinical in vitro and in vivo studies and presents a broad report on the pharmacological activity of the A. linearis extracts relevant for neurodegenerative diseases. RESULTS Flavonoids present in herbal infusions are absorbed from gastro-intestinal tract and may affect the central nervous system. The experimental investigations yield the results indicating to supporting role of A. linearis in the prevention of neurodegeneration, primarily owing to anti-oxidative and anti-inflammatory properties, anti-hyperglycaemic and anti-hyperlipidaemic effects as well as favourable impact on neurotransmission with following cognitive and behavioural after-math. DISCUSSION The multiple pharmacological activities and safety of Aspalathus linearis extracts are commented in the manuscript. The continuous rooibos tea consumption seems to be safe (despite anecdotal liver irritation); however, there is a risk of herbal-drug interactions.
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Affiliation(s)
- Justyna Pyrzanowska
- Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Centre for Preclinical Research and Technology CePT, Warsaw, Poland
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Lo J, Wu HE, Liu CC, Chang KC, Lee PY, Liu PL, Huang SP, Wu PC, Lin TC, Lai YH, Chang YC, Chen YR, Lee SI, Huang YK, Wang SC, Li CY. Nordalbergin Exerts Anti-Neuroinflammatory Effects by Attenuating MAPK Signaling Pathway, NLRP3 Inflammasome Activation and ROS Production in LPS-Stimulated BV2 Microglia. Int J Mol Sci 2023; 24:ijms24087300. [PMID: 37108458 PMCID: PMC10138998 DOI: 10.3390/ijms24087300] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/02/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Microglia-associated neuroinflammation is recognized as a critical factor in the pathogenesis of neurodegenerative diseases; however, there is no effective treatment for the blockage of neurodegenerative disease progression. In this study, the effect of nordalbergin, a coumarin isolated from the wood bark of Dalbergia sissoo, on lipopolysaccharide (LPS)-induced inflammatory responses was investigated using murine microglial BV2 cells. Cell viability was assessed using the MTT assay, whereas nitric oxide (NO) production was analyzed using the Griess reagent. Secretion of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) was detected by the ELISA. The expression of inducible NO synthase (iNOS), cyclooxygenase (COX)-2, mitogen-activated protein kinases (MAPKs) and NLRP3 inflammasome-related proteins was assessed by Western blot. The production of mitochondrial reactive oxygen species (ROS) and intracellular ROS was detected using flow cytometry. Our experimental results indicated that nordalbergin ≤20 µM suppressed NO, IL-6, TNF-α and IL-1β production; decreased iNOS and COX-2 expression; inhibited MAPKs activation; attenuated NLRP3 inflammasome activation; and reduced both intracellular and mitochondrial ROS production by LPS-stimulated BV2 cells in a dose-dependent manner. These results demonstrate that nordalbergin exhibits anti-inflammatory and anti-oxidative activities through inhibiting MAPK signaling pathway, NLRP3 inflammasome activation and ROS production, suggesting that nordalbergin might have the potential to inhibit neurodegenerative disease progression.
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Affiliation(s)
- Jung Lo
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Ophthalmology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Hsin-En Wu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ching-Chih Liu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Ophthalmology, Chi Mei Medical Center, Tainan 71004, Taiwan
| | - Kun-Che Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Ophthalmology, Louis J. Fox Center for Vision Restoration, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
- Department of Neurobiology, Center of Neuroscience, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Po-Yen Lee
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Ophthalmology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Po-Len Liu
- Department of Respiratory Therapy, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Shu-Pin Huang
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Ph.D. Program in Environmental and Occupational Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Pei-Chang Wu
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Ophthalmology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Tzu-Chieh Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yu-Hung Lai
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Ophthalmology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yo-Chen Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Ophthalmology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yuan-Ru Chen
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Sheng-I Lee
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yu-Kai Huang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Shu-Chi Wang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Chia-Yang Li
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
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Chen W, He L, Pei H, Li J, Zhao Y, Zong Y, Kan H, He Z, Du R. Neuroprotective effect of total flavonoids in stems and leaves of Glycyrrhiza uralensis Fisch. on oxidative stress in HT-22 cells and Caenorhabditis elegans. Aging (Albany NY) 2023; 15:5290-5303. [PMID: 37367832 PMCID: PMC10333086 DOI: 10.18632/aging.204627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 02/20/2023] [Indexed: 06/28/2023]
Abstract
The Glycyrrhiza uralensis Fisch. is a common traditional Chinese medicine. However, its aerial part is currently not widely studied and used. Therefore, we aimed to investigate the neuroprotective effects of total flavonoids in aerial stems and leaves of Glycyrrhiza uralensis Fisch. (GSF) by an in vitro LPS-induced HT-22 cell model and an in vivo Caenorhabditis elegans (C. elegans) model. In this study, cell apoptosis was evaluated by CCK-8 and Hoechst 33258 staining in LPS-induced HT-22 cells. Meanwhile, ROS level, mitochondrial membrane potential (MMP), and Ca2+ level were detected by the flow cytometer. In vivo, C. elegans was also investigated the effect of GSF on lifespan, spawning, and paralysis. Moreover, the survival of C. elegans to oxidative stimuli (juglone and H2O2), and the nuclear translocation of DAF-16 and SKN-1 were evaluated. The results showed that GSF could inhibit LPS-induced HT-22 cell apoptosis. Moreover, GSF decreased the levels of ROS, MMP, Ca2+, and malondialdehyde (MDA) and increased the activities of SOD and CAT in HT-22 cells. Furthermore, GSF did not affect the lifespan and laying of eggs of C. elegans N2. However, it delayed paralysis in C. elegans CL4176 in a dose-dependent manner. Meanwhile, GSF increased the survival rate of C. elegans CL2006 after juglone and H2O2 treatment, increased SOD and CAT, and decreased MDA levels. Importantly, GSF promoted the nuclear translocation of DAF-16 and SKN-1 in C. elegans TG356 and LC333, respectively. Taken together, GSF can play a protective role in neuronal cells by inhibiting oxidative stress.
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Affiliation(s)
- Weijia Chen
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Lei He
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Hongyan Pei
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Jianming Li
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Yan Zhao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Ying Zong
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Hong Kan
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Zhongmei He
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Rui Du
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education of China, Changchun 130118, China
- Jilin Provincial Engineering Research Center for Efficient Breeding and Product Development of Sika Deer of China, Changchun 130118, China
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Valenzuela-Arzeta IE, Soto-Rojas LO, Flores-Martinez YM, Delgado-Minjares KM, Gatica-Garcia B, Mascotte-Cruz JU, Nava P, Aparicio-Trejo OE, Reyes-Corona D, Martínez-Dávila IA, Gutierrez-Castillo ME, Espadas-Alvarez AJ, Orozco-Barrios CE, Martinez-Fong D. LPS Triggers Acute Neuroinflammation and Parkinsonism Involving NLRP3 Inflammasome Pathway and Mitochondrial CI Dysfunction in the Rat. Int J Mol Sci 2023; 24:ijms24054628. [PMID: 36902058 PMCID: PMC10003606 DOI: 10.3390/ijms24054628] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 03/06/2023] Open
Abstract
Whether neuroinflammation leads to dopaminergic nigrostriatal system neurodegeneration is controversial. We addressed this issue by inducing acute neuroinflammation in the substantia nigra (SN) with a single local administration (5 µg/2 µL saline solution) of lipopolysaccharide (LPS). Neuroinflammatory variables were assessed from 48 h to 30 days after the injury by immunostaining for activated microglia (Iba-1 +), neurotoxic A1 astrocytes (C3 + and GFAP +), and active caspase-1. We also evaluated NLRP3 activation and Il-1β levels by western blot and mitochondrial complex I (CI) activity. Fever and sickness behavior was assessed for 24 h, and motor behavior deficits were followed up until day 30. On this day, we evaluated the cellular senescence marker β-galactosidase (β-Gal) in the SN and tyrosine hydroxylase (TH) in the SN and striatum. After LPS injection, Iba-1 (+), C3 (+), and S100A10 (+) cells were maximally present at 48 h and reached basal levels on day 30. NLRP3 activation occurred at 24 h and was followed by a rise of active caspase-1 (+), Il-1β, and decreased mitochondrial CI activity until 48 h. A significant loss of nigral TH (+) cells and striatal terminals was associated with motor deficits on day 30. The remaining TH (+) cells were β-Gal (+), suggesting senescent dopaminergic neurons. All the histopathological changes also appeared on the contralateral side. Our results show that unilaterally LPS-induced neuroinflammation can cause bilateral neurodegeneration of the nigrostriatal dopaminergic system and are relevant for understanding Parkinson's disease (PD) neuropathology.
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Affiliation(s)
- Irais E. Valenzuela-Arzeta
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
| | - Luis O. Soto-Rojas
- Laboratorio de Patogénesis Molecular, Laboratorio 4 Edificio A4, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Mexico City 54090, Mexico
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Autónoma de México, Mexico City 54090, Mexico
| | - Yazmin M. Flores-Martinez
- Programa Institucional de Biomedicina Molecular, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, Mexico City 07320, Mexico
| | - Karen M. Delgado-Minjares
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
- Laboratorio de Patogénesis Molecular, Laboratorio 4 Edificio A4, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Mexico City 54090, Mexico
| | - Bismark Gatica-Garcia
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
- Nanoparticle Therapy Institute, Aguascalientes 20120, Mexico
| | - Juan U. Mascotte-Cruz
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
| | - Porfirio Nava
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
| | - Omar Emiliano Aparicio-Trejo
- Departamento de Fisiopatología Cardio-Renal, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico
| | - David Reyes-Corona
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
- Nanoparticle Therapy Institute, Aguascalientes 20120, Mexico
| | - Irma A. Martínez-Dávila
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
| | - M. E. Gutierrez-Castillo
- Departamento de Biociencias e Ingeniería, Centro Interdisciplinario de Investigaciones y Estudios Sobre Medio Ambiente y Desarrollo, Instituto Politécnico Nacional, Mexico City 07340, Mexico
| | - Armando J. Espadas-Alvarez
- Departamento de Biociencias e Ingeniería, Centro Interdisciplinario de Investigaciones y Estudios Sobre Medio Ambiente y Desarrollo, Instituto Politécnico Nacional, Mexico City 07340, Mexico
| | - Carlos E. Orozco-Barrios
- Conacyt-Unidad de Investigaciones Médicas en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico
| | - Daniel Martinez-Fong
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City 07360, Mexico
- Nanoparticle Therapy Institute, Aguascalientes 20120, Mexico
- Programa de Nanociencias y Nanotecnología, CINVESTAV, Mexico City 07360, Mexico
- Correspondence: ; Tel.: +52-5557473959
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Neuroprotective Effects of Savinin on LPS-Induced Neuroinflammation In Vivo via Regulating MAPK/NF-κB Pathway and NLRP3 Inflammasome Activation. Molecules 2023; 28:molecules28041575. [PMID: 36838564 PMCID: PMC9962396 DOI: 10.3390/molecules28041575] [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: 12/28/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 02/10/2023] Open
Abstract
The traditional herb Eleutherococcus henryi Oliv. is commonly used to treat inflammatory conditions including rheumatism, arthritis, and hepatitis, as well as mental fatigue and amnesia, according to traditional Chinese medicine (TCM) theory. Savinin is a natural lignan obtained from the roots of E. henryi. The present study was undertaken to determine whether savinin can relieve LPS-induced neuroinflammation and if so, what the mechanism is. Groups of male C57BL/6 mice were administered savinin (5, 10, 20 mg/kg) and DEX (10 mg/kg) by gavage once daily for a continuous 7 days. On the 5th day of continuous pre-administration, LPS (2.5 mg/kg) was injected into the lateral ventricles of the mice for modeling 48 h. We found that treatment with savinin decreased the levels of neuroinflammatory cytokines and histopathological alterations dramatically. Consequently, it improved the LPS-induced neuroinflammatory response in mice. Furthermore, savinin inhibited the up-regulated expression of related proteins in the activated MAPK/NF-κB and NLRP3 inflammasome signaling pathways caused by LPS. Docking studies demonstrated the binding of savinin to three receptors (MAPK, NF-κB and NLRP3) using a well-fitting mode. These findings suggest that savinin may suppress neuroinflammation induced by LPS in vivo via modulating MAPK/NF-κB and NLRP3 signaling pathways.
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Liu Y, Tan Y, Zhang Z, Li H, Yi M, Zhang Z, Hui S, Peng W. Neuroimmune mechanisms underlying Alzheimer's disease: Insights into central and peripheral immune cell crosstalk. Ageing Res Rev 2023; 84:101831. [PMID: 36565960 DOI: 10.1016/j.arr.2022.101831] [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: 08/24/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Alzheimer's disease (AD) is a highly life-threatening neurodegenerative disease. Dysregulation of the immune system plays a critical role in promoting AD, which has attracted extensive attention recently. Central and peripheral immune responses are involved in the pathogenesis of AD. Immune changes precede Aβ-associated senile plaque formation and tau-related neurofibrillary tangles, which are the recognised pathological features of AD. Therefore, elucidating immune-related mechanisms underlying the development of AD can help to prevent and treat AD at the source by blocking its progression before the development of pathological changes. To understand the specific pathogenesis of AD, it is important to examine the role of central and peripheral immunity in AD. This review summarises immune-related mechanisms underlying the pathogenesis of AD, focusing on the effect of various central and peripheral immune cells, and describes the possible crosstalk between central and peripheral immunity during the development of AD. This review provides novel insights into the treatment of AD and offers a new direction for immune-related research on AD in the future.
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Affiliation(s)
- Yuqing Liu
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, China; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China.
| | - Yejun Tan
- School of Mathematics, University of Minnesota Twin Cities, Minneapolis, MN, USA.
| | - Zheyu Zhang
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, China; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China.
| | - Hongli Li
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, China; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China.
| | - Min Yi
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, China; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China.
| | - Zhen Zhang
- YangSheng College of Traditional Chinese Medicine, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China.
| | - Shan Hui
- Department of Geratology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha 410005, China.
| | - Weijun Peng
- Department of Integrated Traditional Chinese & Western Medicine, The Second Xiangya Hospital, Central South University, Changsha 410011, China; National Clinical Research Center for Metabolic Diseases, Changsha 410011, China.
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Zhu J, Zhou F, Zhou Q, Xu Y, Li Y, Huang D, Chen L, Liu A, Zou F, Meng X. NLRP3 activation in microglia contributes to learning and memory impairment induced by chronic lead exposure in mice. Toxicol Sci 2023; 191:179-191. [PMID: 36308466 DOI: 10.1093/toxsci/kfac115] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Lead (Pb)-induced microglial activation and neuroinflammation has been considered as one of the main pathological events of Pb neurotoxicity. The NLRP3 inflammasome signaling pathway is a major contributor to the neuroinflammatory process in the central nervous system. However, the relationship between chronic Pb exposure and neurogenic NLRP3 inflammasome is unclear. Therefore, the aim of this study was to characterize the role of NLRP3 inflammasome activation during the chronic Pb exposure using in vitro and in vivo models. Our results showed that chronic Pb exposure induce learning and memory impairment in mice, mainly related to the activation of microglia and NLRP3 inflammasome. This phenomenon was reversed in mice by treating with the NLRP3 inhibitor MCC950 and using NLRP3-/- mice. In addition, Pb caused the activation of NLRP3 inflammasome, the production of mitochondrial ROS (mtROS), and mitochondrial Ca2+ overload in BV2 cells. Amelioration of mtROS abolished Pb-induced NLRP3 inflammasome activation. Moreover, after regulation of Ca2+ redistribution, mtROS and NLRP3 inflammasome activation was restored. In conclusion, NLRP3 inflammasome activation in microglia plays a vital role in Pb neurotoxicity, by a novel mechanism of enhancing mtROS production and Ca2+ redistribution.
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Affiliation(s)
- Jiawei Zhu
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Fan Zhou
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Qin Zhou
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yongjie Xu
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yunting Li
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Dingbang Huang
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Lixuan Chen
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Anfei Liu
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Fei Zou
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiaojing Meng
- Department of Occupational Health and Occupational Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, Guangdong 510515, China
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Kattan D, Barsa C, Mekhijian S, Shakkour Z, Jammoul M, Doumit M, Zabala MCP, Darwiche N, Eid AH, Mechref Y, Wang KK, de Rivero Vaccari JP, Munoz Pareja JC, Kobeissy F. Inflammasomes as biomarkers and therapeutic targets in traumatic brain injury and related-neurodegenerative diseases: A comprehensive overview. Neurosci Biobehav Rev 2023; 144:104969. [PMID: 36423707 PMCID: PMC9805531 DOI: 10.1016/j.neubiorev.2022.104969] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 11/23/2022]
Abstract
Given the ambiguity surrounding traumatic brain injury (TBI) pathophysiology and the lack of any Food and Drug Administration (FDA)-approved neurotherapeutic drugs, there is an increasing need to better understand the mechanisms of TBI. Recently, the roles of inflammasomes have been highlighted as both potential therapeutic targets and diagnostic markers in different neurodegenerative disorders. Indeed, inflammasome activation plays a pivotal function in the central nervous system (CNS) response to many neurological conditions, as well as to several neurodegenerative disorders, specifically, TBI. This comprehensive review summarizes and critically discusses the mechanisms that govern the activation and assembly of inflammasome complexes and the major methods used to study inflammasome activation in TBI and its implication for other neurodegenerative disorders. Also, we will review how inflammasome activation is critical in CNS homeostasis and pathogenesis, and how it can impact chronic TBI sequalae and increase the risk of developing neurodegenerative diseases. Additionally, we discuss the recent updates on inflammasome-related biomarkers and the potential to utilize inflammasomes as putative therapeutic targets that hold the potential to better diagnose and treat subjects with TBI.
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Affiliation(s)
- Dania Kattan
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Chloe Barsa
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Sarin Mekhijian
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Zaynab Shakkour
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon; Program for Interdisciplinary Neuroscience, Department of Child Health, School of Medicine, University of Missouri, USA
| | - Maya Jammoul
- Department of Anatomy, Cell Biology, and Physiology, American University of Beirut, Beirut, Lebanon
| | - Mark Doumit
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Maria Camila Pareja Zabala
- Division of Pediatric Critical Care, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Nadine Darwiche
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Ali H Eid
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Yehia Mechref
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA
| | - Kevin K Wang
- Morehouse School of Medicine, Department of Neurobiology, Atlanta, GA, USA
| | - Juan Pablo de Rivero Vaccari
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Jennifer C Munoz Pareja
- Division of Pediatric Critical Care, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Firas Kobeissy
- Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon; Morehouse School of Medicine, Department of Neurobiology, Atlanta, GA, USA.
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Chang MX. Emerging mechanisms and functions of inflammasome complexes in teleost fish. Front Immunol 2023; 14:1065181. [PMID: 36875130 PMCID: PMC9978379 DOI: 10.3389/fimmu.2023.1065181] [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: 10/09/2022] [Accepted: 02/06/2023] [Indexed: 02/18/2023] Open
Abstract
Inflammasomes are multiprotein complexes, which are assembled in response to a diverse range of exogenous pathogens and endogenous danger signals, leading to produce pro-inflammatory cytokines and induce pyroptotic cell death. Inflammasome components have been identified in teleost fish. Previous reviews have highlighted the conservation of inflammasome components in evolution, inflammasome function in zebrafish infectious and non-infectious models, and the mechanism that induce pyroptosis in fish. The activation of inflammasome involves the canonical and noncanonical pathways, which can play critical roles in the control of various inflammatory and metabolic diseases. The canonical inflammasomes activate caspase-1, and their signaling is initiated by cytosolic pattern recognition receptors. However the noncanonical inflammasomes activate inflammatory caspase upon sensing of cytosolic lipopolysaccharide from Gram-negative bacteria. In this review, we summarize the mechanisms of activation of canonical and noncanonical inflammasomes in teleost fish, with a particular focus on inflammasome complexes in response to bacterial infection. Furthermore, the functions of inflammasome-associated effectors, specific regulatory mechanisms of teleost inflammasomes and functional roles of inflammasomes in innate immune responses are also reviewed. The knowledge of inflammasome activation and pathogen clearance in teleost fish will shed new light on new molecular targets for treatment of inflammatory and infectious diseases.
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Affiliation(s)
- Ming Xian Chang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of InSciences, Wuhan, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China.,Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan, China
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González L, Rivera K, Andia ME, Martínez Rodriguez G. The IL-1 Family and Its Role in Atherosclerosis. Int J Mol Sci 2022; 24:17. [PMID: 36613465 PMCID: PMC9820551 DOI: 10.3390/ijms24010017] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/09/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
The IL-1 superfamily of cytokines is a central regulator of immunity and inflammation. The family is composed of 11 cytokines (with agonist, antagonist, and anti-inflammatory properties) and 10 receptors, all tightly regulated through decoy receptor, receptor antagonists, and signaling inhibitors. Inflammation not only is an important physiological response against infection and injury but also plays a central role in atherosclerosis development. Several clinical association studies along with experimental studies have implicated the IL-1 superfamily of cytokines and its receptors in the pathogenesis of cardiovascular disease. Here, we summarize the key features of the IL-1 family, its role in immunity and disease, and how it helps shape the development of atherosclerosis.
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Affiliation(s)
- Leticia González
- Centro de Imágenes Biomédicas—Departamento de Radiología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 3580000, Chile
- Instituto Milenio de Ingeniería e Inteligencia Artificial Para la Salud, iHEALTH, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Katherine Rivera
- Centro de Imágenes Biomédicas—Departamento de Radiología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 3580000, Chile
- Programa de Doctorado en Ciencias Médicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago 3580000, Chile
| | - Marcelo E. Andia
- Centro de Imágenes Biomédicas—Departamento de Radiología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago 3580000, Chile
- Instituto Milenio de Ingeniería e Inteligencia Artificial Para la Salud, iHEALTH, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Gonzalo Martínez Rodriguez
- División de Enfermedades Cardiovasculares, Pontificia Universidad Católica de Chile, Santiago 3580000, Chile
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From Low-Grade Inflammation in Osteoarthritis to Neuropsychiatric Sequelae: A Narrative Review. Int J Mol Sci 2022; 23:ijms232416031. [PMID: 36555670 PMCID: PMC9784931 DOI: 10.3390/ijms232416031] [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: 11/14/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Nowadays, osteoarthritis (OA), a common, multifactorial musculoskeletal disease, is considered to have a low-grade inflammatory pathogenetic component. Lately, neuropsychiatric sequelae of the disease have gained recognition. However, a link between the peripheral inflammatory process of OA and the development of neuropsychiatric pathology is not completely understood. In this review, we provide a narrative that explores the development of neuropsychiatric disease in the presence of chronic peripheral low-grade inflammation with a focus on its signaling to the brain. We describe the development of a pro-inflammatory environment in the OA-affected joint. We discuss inflammation-signaling pathways that link the affected joint to the central nervous system, mainly using primary sensory afferents and blood circulation via circumventricular organs and cerebral endothelium. The review describes molecular and cellular changes in the brain, recognized in the presence of chronic peripheral inflammation. In addition, changes in the volume of gray matter and alterations of connectivity important for the assessment of the efficacy of treatment in OA are discussed in the given review. Finally, the narrative considers the importance of the use of neuropsychiatric diagnostic tools for a disease with an inflammatory component in the clinical setting.
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Toledano-Díaz A, Álvarez MI, Toledano A. The relationships between neuroglial and neuronal changes in Alzheimer's disease, and the related controversies II: gliotherapies and multimodal therapy. J Cent Nerv Syst Dis 2022; 14:11795735221123896. [PMID: 36407561 PMCID: PMC9666878 DOI: 10.1177/11795735221123896] [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: 08/18/2021] [Accepted: 08/05/2022] [Indexed: 08/30/2023] Open
Abstract
Since the original description of Alzheimer´s disease (AD), research into this condition has mainly focused on assessing the alterations to neurons associated with dementia, and those to the circuits in which they are involved. In most of the studies on human brains and in many models of AD, the glial cells accompanying these neurons undergo concomitant alterations that aggravate the course of neurodegeneration. As a result, these changes to neuroglial cells are now included in all the "pathogenic cascades" described in AD. Accordingly, astrogliosis and microgliosis, the main components of neuroinflammation, have been integrated into all the pathogenic theories of this disease, as discussed in this part of the two-part monograph that follows an accompanying article on gliopathogenesis and glioprotection. This initial reflection verified the implication of alterations to the neuroglia in AD, suggesting that these cells may also represent therapeutic targets to prevent neurodegeneration. In this second part of the monograph, we will analyze the possibilities of acting on glial cells to prevent or treat the neurodegeneration that is the hallmark of AD and other pathologies. Evidence of the potential of different pharmacological, non-pharmacological, cell and gene therapies (widely treated) to prevent or treat this disease is now forthcoming, in most cases as adjuncts to other therapies. A comprehensive AD multimodal therapy is proposed in which neuronal and neuroglial pharmacological treatments are jointly considered, as well as the use of new cell and gene therapies and non-pharmacological therapies that tend to slow down the progress of dementia.
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Moreno-Martinez L, Santiago L, de la Torre M, Calvo AC, Pardo J, Osta R. Hemizygous Granzyme A Mice Expressing the hSOD1G93A Transgene Show Slightly Extended Lifespan. Int J Mol Sci 2022; 23:13554. [PMID: 36362341 PMCID: PMC9655466 DOI: 10.3390/ijms232113554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 08/30/2023] Open
Abstract
Granzyme A (gzmA), a serine protease involved in the modulation of the inflammatory immune response, is found at an elevated level in the serum from ALS patients. However, the influence of gzmA on the progression of ALS remains unclear. The aim of our work was to assess whether the absence of gzmA in an ALS murine model could help slow down the progression of the disease. Homozygous and hemizygous gzmA-deficient mice expressing the hSOD1G93A transgene were generated, and survival of these mice was monitored. Subsequently, gene and protein expression of inflammatory and oxidative stress markers was measured in the spinal cord and quadriceps of these mice. We observed the longest lifespan in gzmA+/- mice. GzmA gene and protein expression was downregulated in the spinal cord and serum from gmzA+/- mice, confirming that the increased survival of hemizygous mice is correlated with lower levels of gzmA. In addition, mRNA and protein levels of glutathione reductase (GSR), involved in oxidative stress, were found downregulated in the spinal cord and quadriceps of gmzA+/- mice, together with lower IL-1β and IL-6 mRNA levels in hemyzigous mice. In summary, our findings indicate for the first time that reduced levels, but not the absence, of gzmA could slightly ameliorate the disease progression in this animal model.
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Affiliation(s)
- Laura Moreno-Martinez
- LAGENBIO, Faculty of Veterinary, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
- Centre for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Biomedical Research Centre of Aragón (CIBA), Aragón Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- AgriFood Institute of Aragon-IA2 (UNIZAR-CITA), 50013 Zaragoza, Spain
| | - Llipsy Santiago
- Biomedical Research Centre of Aragón (CIBA), Aragón Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Miriam de la Torre
- LAGENBIO, Faculty of Veterinary, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
- Centre for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Biomedical Research Centre of Aragón (CIBA), Aragón Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- AgriFood Institute of Aragon-IA2 (UNIZAR-CITA), 50013 Zaragoza, Spain
| | - Ana Cristina Calvo
- LAGENBIO, Faculty of Veterinary, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
- Centre for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Biomedical Research Centre of Aragón (CIBA), Aragón Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- AgriFood Institute of Aragon-IA2 (UNIZAR-CITA), 50013 Zaragoza, Spain
| | - Julián Pardo
- Biomedical Research Centre of Aragón (CIBA), Aragón Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Microbiology, Preventive Medicine and Public Health, University of Zaragoza, 50009 Zaragoza, Spain
| | - Rosario Osta
- LAGENBIO, Faculty of Veterinary, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain
- Centre for Biomedical Research in Neurodegenerative Diseases (CIBERNED), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Biomedical Research Centre of Aragón (CIBA), Aragón Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- AgriFood Institute of Aragon-IA2 (UNIZAR-CITA), 50013 Zaragoza, Spain
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Cao T, Wang Z, Zhu X. The Immunomodulatory Functions of BTK Inhibition in the Central Nervous System. J Inflamm Res 2022; 15:6427-6438. [DOI: 10.2147/jir.s389958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/15/2022] [Indexed: 11/25/2022] Open
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The mechanism of ferroptosis regulating oxidative stress in ischemic stroke and the regulation mechanism of natural pharmacological active components. Biomed Pharmacother 2022; 154:113611. [PMID: 36081288 DOI: 10.1016/j.biopha.2022.113611] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 02/06/2023] Open
Abstract
Cerebrovascular diseases, such as ischemic stroke, pose serious medical challenges worldwide due to their high morbidity and mortality and limitations in clinical treatment strategies. Studies have shown that reactive oxygen species (ROS)-mediated inflammation, excitotoxicity, and programmed cell death of each neurovascular unit during post-stroke hypoxia and reperfusion play an important role in the pathological cascade. Ferroptosis, a programmed cell death characterized by iron-regulated accumulation of lipid peroxidation, is caused by abnormal metabolism of lipids, glutathione (GSH), and iron, and can accelerate acute central nervous system injury. Recent studies have gradually uncovered the pathological process of ferroptosis in the neurovascular unit of acute stroke. Some drugs such as iron chelators, ferrostatin-1 (Fer-1) and liproxstatin-1 (Lip-1) can protect nerves after neurovascular unit injury in acute stroke by inhibiting ferroptosis. In addition, combined with our previous studies on ferroptosis mediated by natural compounds in ischemic stroke, this review summarized the progress in the regulation mechanism of natural chemical components and herbal chemical components on ferroptosis in recent years, in order to provide reference information for future research on ferroptosis and lead compounds for the development of ferroptosis inhibitors.
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Martin NP, Jean Harry G. Imaging Inflammasome Activation in Microglia. Curr Protoc 2022; 2:e578. [PMID: 36286528 PMCID: PMC9614552 DOI: 10.1002/cpz1.578] [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] [Indexed: 11/06/2022]
Abstract
Inflammasomes are multiprotein complexes that play key roles in the host's innate immune response to insult. The assembly of an inflammatory complex is initiated with the oligomerization of the upstream inflammasome-forming sensor and then follows a well-orchestrated multi-step process leading to downstream effector functions that are critical in the innate immune response. The final assembly of these steps provides a detectable readout of inflammasome complex activation in the form of an apoptosis-associated speck-like protein containing a CARD (ASC) speck. Inflammasome activation-and the release of IL-1β and ASC specks from the microglia, the brain resident immune cell-have been implicated in various neurological and neurodegenerative disorders. Protocols exist for the generation of fluorescent inflammasome indicator peripheral macrophages. Building upon these protocols, we describe here a protocol that details the generation of fluorescent inflammasome indicator microglia cells using recombinant retroviruses to transduce murine BV-2 cells. In this protocol, the cells are established in a manner to allow for experimental control of the initial priming step of the inflammasome activation process. We then provide a series of steps for using these reporter cells within an inflammasome activation assay and use real-time imaging of ASC-speck formation as an indicator of inflammasome activation. In addition, we describe strategies for using these cells for examining the effects of a test substance on inflammasome activation. This protocol offers an effective approach conducive to screening for and examining modifications of microglia inflammasome activation due to exposure to chemicals or pharmacological agents. © Published 2022. This article is a U.S. Government work and is in the public domain in the USA. Basic Protocol 1: Production of retroviruses to express inflammasome indicator Basic Protocol 2: Generation of inflammasome indicator BV-2 cells Basic Protocol 3: Priming and activation of BV-2-ASC-Cerulean cells for inflammasome activation assay Basic Protocol 4: Examining modifications to inflammasome activation by test substances Basic Protocol 5: Imaging and analysis of ASC speck formation.
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Affiliation(s)
- Negin P. Martin
- Neurobiology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - G. Jean Harry
- Mechanistic Toxicology Branch, Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, NC
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Abstract
Parkinson’s disease (PD) is a complex, chronic, and progressive neurodegenerative disease that is characterized by irreversible dopaminergic neuronal loss in the substantia nigra. Alpha-synuclein is normally a synaptic protein that plays a key role in PD due to pathological accumulation as oligomers or fibrils. Clustered alpha-synuclein binds to the Toll-like receptors and activates the microglia, which initiates a process that continues with pro-inflammatory cytokine production and secretion. Pro-inflammatory cytokine overproduction and secretion induce cell death and accelerate PD progression. Microglia are found in a resting state in physiological conditions. Microglia became activated by stimulating Toll-like receptors on it under pathological conditions, such as alpha-synuclein aggregation, environmental toxins, or oxidative stress. The interaction between Toll-like receptors and its downstream pathway triggers an activation series, leads to nuclear factor-kappa B activation, initiates the inflammasome formation, and increases cytokine levels. This consecutive inflammatory process leads to dopaminergic cell damage and cell death. Microglia become overactive in response to chronic inflammation, which is observed in PD and causes excessive cytotoxic factor production, such as reactive oxidase, nitric oxide, and tumor necrosis factor-alpha. This inflammatory process contributes to the exacerbation of pathology by triggering neuronal damage or death. Current treatments, such as dopaminergic agonists, anticholinergics, or monoamine oxidase inhibitors alleviate PD symptoms, but they can not stop the disease progression. Finding a radical treatment option or stopping the progression is essential when considering that PD is the second most reported neurodegenerative disorder. Many cytokines are released during inflammation, and they can start the phagocytic process, which caused the degradation of infected cells along with healthy ones. Therefore, targeting the pathological mechanisms, such as microglial activation, mitochondrial dysfunction, and oxidative stress, that should be involved in the treatment program is important. Neuroinflammation is one of the key factors involved in PD pathogenesis as well as alpha-synuclein accumulation, synaptic dysfunction, or dopaminergic neuronal loss, especially in the substantia nigra. Therefore, evaluating the therapeutic efficiency of the mechanisms is important, such as microglial activation and nuclear factor-kappa B pathway or inflammasome formation inhibition, and cytokine release interruption against neuroinflammation may create new treatment possibilities for PD. This study examined the pathological relation between PD and neuroinflammation, and targeting neuroinflammation as an opportunity for PD treatments, such as Toll-like receptor antagonists, NOD-like receptor family pyrin domain containing-3 inflammasome inhibitors, cytokine inhibitors, peroxisome proliferator-activated receptor-γ agonists, reactive oxygen species inhibitors, and nonsteroidal anti-inflammatory drugs.
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Hepatitis E virus infects brain microvascular endothelial cells, crosses the blood-brain barrier, and invades the central nervous system. Proc Natl Acad Sci U S A 2022; 119:e2201862119. [PMID: 35671427 PMCID: PMC9214495 DOI: 10.1073/pnas.2201862119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Hepatitis E virus (HEV) causes not only acute and chronic hepatitis but also neurological disorders. To delineate the mechanism of HEV-associated neurological diseases, we showed that both quasi-enveloped and nonenveloped HEVs can cross the blood–brain barrier model in a tumor necrosis factor alpha (TNF-α)-independent manner and productively infect brain microvascular endothelial cells in vitro. Furthermore, we showed that HEV was detected in brain and spinal cord from HEV-infected pigs and that pigs with detectable HEV in central nervous system (CNS) tissues had histological lesions in brain and spinal cord and significantly higher levels of proinflammatory cytokines TNF-α and interleukin 18 than pigs without detectable HEV in CNS tissues. The results shed light on a potential mechanism of HEV-associated neuroinvasion. Hepatitis E virus (HEV) is an important but understudied zoonotic virus causing both acute and chronic viral hepatitis. A proportion of HEV-infected individuals also developed neurological diseases such as Guillain–Barré syndrome, neuralgic amyotrophy, encephalitis, and myelitis, although the mechanism remains unknown. In this study, by using an in vitro blood–brain barrier (BBB) model, we first investigated whether HEV can cross the BBB and whether the quasi-enveloped HEV virions are more permissible to the BBB than the nonenveloped virions. We found that both quasi-enveloped and nonenveloped HEVs can similarly cross the BBB and that addition of proinflammatory cytokine tumor necrosis factor alpha (TNF-α) has no significant effect on the ability of HEV to cross the BBB in vitro. To explore the possible mechanism of HEV entry across the BBB, we tested the susceptibility of human brain microvascular endothelial cells lining the BBB to HEV infection and showed that brain microvascular endothelial cells support productive HEV infection. To further confirm the in vitro observation, we conducted an experimental HEV infection study in pigs and showed that both quasi-enveloped and nonenveloped HEVs invade the central nervous system (CNS) in pigs, as HEV RNA was detected in the brain and spinal cord of infected pigs. The HEV-infected pigs with detectable viral RNA in CNS tissues had histological lesions in brain and spinal cord and significantly higher levels of proinflammatory cytokines TNF-α and interleukin 18 than the HEV-infected pigs without detectable viral RNA in CNS tissues. The findings suggest a potential mechanism of HEV-associated neuroinvasion.
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Cui Y, Yu H, Bu Z, Wen L, Yan L, Feng J. Focus on the Role of the NLRP3 Inflammasome in Multiple Sclerosis: Pathogenesis, Diagnosis, and Therapeutics. Front Mol Neurosci 2022; 15:894298. [PMID: 35694441 PMCID: PMC9175009 DOI: 10.3389/fnmol.2022.894298] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 05/05/2022] [Indexed: 12/11/2022] Open
Abstract
Neuroinflammation is initiated with an aberrant innate immune response in the central nervous system (CNS) and is involved in many neurological diseases. Inflammasomes are intracellular multiprotein complexes that can be used as platforms to induce the maturation and secretion of proinflammatory cytokines and pyroptosis, thus playing a pivotal role in neuroinflammation. Among the inflammasomes, the nucleotide-binding oligomerization domain-, leucine-rich repeat- and pyrin domain-containing 3 (NLRP3) inflammasome is well-characterized and contributes to many neurological diseases, such as multiple sclerosis (MS), Alzheimer's disease (AD), and ischemic stroke. MS is a chronic autoimmune disease of the CNS, and its hallmarks include chronic inflammation, demyelination, and neurodegeneration. Studies have demonstrated a relationship between MS and the NLRP3 inflammasome. To date, the pathogenesis of MS is not fully understood, and clinical studies on novel therapies are still underway. Here, we review the activation mechanism of the NLRP3 inflammasome, its role in MS, and therapies targeting related molecules, which may be beneficial in MS.
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