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Kim L, Nan G, Kim HY, Cha M, Lee BH. Modulation of chemotherapy-induced peripheral neuropathy by JZL195 through glia and the endocannabinoid system. Biomed Pharmacother 2024; 180:117515. [PMID: 39362070 DOI: 10.1016/j.biopha.2024.117515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 09/12/2024] [Accepted: 09/25/2024] [Indexed: 10/05/2024] Open
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) used to treat cancer, is a significant side effect with a complex pathophysiology, and its mechanisms remain unclear. Recent research highlights neuroinflammation, which is modulated by the endocannabinoid system (ECS) and associated with glial activation, and the role of toll-like receptor 4 (TLR4) in CIPN. This study aimed to investigate the effects of JZL195, an inhibitor of fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL), and explore the connection between cannabinoid receptors and TLR4 in glial cells. A CIPN animal model was developed using cisplatin-injected male C57BL/6 mice. Mechanical and cold allodynia were assessed through von Frey and acetone tests. Western blot analysis was used to examine the expression of catabolic enzymes, cannabinoid receptors, glial cells, and neuroinflammatory factors in the dorsal root ganglia (DRGs) and spinal cord. Immunohistochemistry was used to investigate the colocalization of cannabinoid receptors and TLR4 in glial cells. JZL195 alleviated pain by inhibiting FAAH/MAGL, modulating the ECS and neuroinflammatory factors, and suppressing glial cell activity. Additionally, cannabinoid receptors and TLR4 colocalized with astrocytes and microglia in the spinal cord. This study highlights the therapeutic potential of JZL195 in modulating the ECS and suggests a correlation between cannabinoid receptors and TLR4 in spinal glial cells, providing insight into alleviating pain and neuroinflammation in CIPN.
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Affiliation(s)
- Leejeong Kim
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Department of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Guanghai Nan
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Department of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Hee Young Kim
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Department of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Myeounghoon Cha
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
| | - Bae Hwan Lee
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Department of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Research Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
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Wu X, Wu Y, Tang F, Wang Y, Li C, Wu S, Wang G, Zhang J. Foxq1 activates CB2R with oleamide to alleviate POCD. Brain Pathol 2024:e13289. [PMID: 39046224 DOI: 10.1111/bpa.13289] [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: 02/26/2024] [Accepted: 07/05/2024] [Indexed: 07/25/2024] Open
Abstract
Postoperative cognitive dysfunction (POCD) is a major concern, particularly among older adults. This study used social isolation (ISO) and multiomics analyses in aged mice to investigate potential mechanisms underlying POCD development. Aged mice were divided into two groups: ISO and paired housing (PH). Oleamide and the cannabinoid receptor type 2 (CB2R) antagonist AM630 were administered intraperitoneally, while Foxq1 adeno-associated viral (AAV) vector was injected directly into the hippocampus. Intramedullary tibial surgeries were subsequently performed to establish the POCD models. Behavioral tests comprising the Y-maze, open field test, and novel object recognition were conducted 2 days after surgery. Hippocampal and serum inflammatory cytokines were assessed. Following surgery, ISO mice demonstrated intensified cognitive impairments and escalated inflammatory markers. Integrative transcriptomic and metabolomic analysis revealed elevated oleamide concentrations in the hippocampus and serum of PH mice, with associative investigations indicating a close relationship between the Foxq1 gene and oleamide levels. While oleamide administration and Foxq1 gene overexpression substantially ameliorated postoperative cognitive performance and systemic inflammation in mice, CB2R antagonist AM630 impeded these enhancements. The Foxq1 gene and oleamide may be crucial in alleviating POCD. While potentially acting through CB2R-mediated pathways, these factors may modulate neuroinflammation and attenuate proinflammatory cytokine levels within the hippocampus, substantially improving cognitive performance postsurgery. This study lays the groundwork for future research into therapeutic approaches targeting the Foxq1-oleamide-CB2R axis, with the ultimate goal of preventing or mitigating POCD.
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Affiliation(s)
- Xiaoying Wu
- Department of Anesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Yuming Wu
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fudong Tang
- Department of Anesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Yangyang Wang
- Department of Anesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Chenxi Li
- Department of Anesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Su Wu
- Department of Anesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Guangzhi Wang
- Department of Anesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Jiaqiang Zhang
- Department of Anesthesiology and Perioperative Medicine, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou, Henan, China
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Rakotoarivelo V, Mayer TZ, Simard M, Flamand N, Di Marzo V. The Impact of the CB 2 Cannabinoid Receptor in Inflammatory Diseases: An Update. Molecules 2024; 29:3381. [PMID: 39064959 PMCID: PMC11279428 DOI: 10.3390/molecules29143381] [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: 06/18/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
The emergence of inflammatory diseases is a heavy burden on modern societies. Cannabis has been used for several millennia to treat inflammatory disorders such as rheumatism or gout. Since the characterization of cannabinoid receptors, CB1 and CB2, the potential of cannabinoid pharmacotherapy in inflammatory conditions has received great interest. Several studies have identified the importance of these receptors in immune cell migration and in the production of inflammatory mediators. As the presence of the CB2 receptor was documented to be more predominant in immune cells, several pharmacological agonists and antagonists have been designed to treat inflammation. To better define the potential of the CB2 receptor, three online databases, PubMed, Google Scholar and clinicaltrial.gov, were searched without language restriction. The full texts of articles presenting data on the endocannabinoid system, the CB2 receptor and its role in modulating inflammation in vitro, in animal models and in the context of clinical trials were reviewed. Finally, we discuss the clinical potential of the latest cannabinoid-based therapies in inflammatory diseases.
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Affiliation(s)
- Volatiana Rakotoarivelo
- Centre de Recherche de l’Institut Universitaire De Cardiologie Et De Pneumologie de Québec, Département of Médecine, Université Laval, Québec City, QC G1V 4G5, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC G1V 0V6, Canada
| | - Thomas Z. Mayer
- Centre de Recherche de l’Institut Universitaire De Cardiologie Et De Pneumologie de Québec, Département of Médecine, Université Laval, Québec City, QC G1V 4G5, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC G1V 0V6, Canada
- Institut sur la Nutrition et les Aliments Fonctionnels, and Centre NUTRISS, École de Nutrition, Université Laval, Québec City, QC G1V 0V6, Canada
| | - Mélissa Simard
- Centre de Recherche de l’Institut Universitaire De Cardiologie Et De Pneumologie de Québec, Département of Médecine, Université Laval, Québec City, QC G1V 4G5, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC G1V 0V6, Canada
| | - Nicolas Flamand
- Centre de Recherche de l’Institut Universitaire De Cardiologie Et De Pneumologie de Québec, Département of Médecine, Université Laval, Québec City, QC G1V 4G5, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC G1V 0V6, Canada
| | - Vincenzo Di Marzo
- Centre de Recherche de l’Institut Universitaire De Cardiologie Et De Pneumologie de Québec, Département of Médecine, Université Laval, Québec City, QC G1V 4G5, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health (CERC-MEND), Université Laval, Québec City, QC G1V 0V6, Canada
- Institut sur la Nutrition et les Aliments Fonctionnels, and Centre NUTRISS, École de Nutrition, Université Laval, Québec City, QC G1V 0V6, Canada
- Joint International Unit between the CNR of Italy and Université Laval on Chemical and Biomolecular Research on the Microbiome and Its Impact on Metabolic Health and Nutrition (UMI-MicroMeNu), Québec City, QC G1V 0V6, Canada
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Wang X, Tang X, Zhu P, Hua D, Xie Z, Guo M, Que M, Yan J, Li X, Xia Q, Luo X, Bi J, Zhao Y, Zhou Z, Li S, Luo A. CircAKT3 alleviates postoperative cognitive dysfunction by stabilizing the feedback cycle of miR-106a-5p/HDAC4/MEF2C axis in hippocampi of aged mice. Cell Mol Life Sci 2024; 81:138. [PMID: 38478029 PMCID: PMC10937803 DOI: 10.1007/s00018-024-05156-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 01/10/2024] [Accepted: 02/05/2024] [Indexed: 03/17/2024]
Abstract
Circular RNAs (circRNAs) have garnered significant attention in the field of neurodegenerative diseases including Alzheimer's diseases due to their covalently closed loop structure. However, the involvement of circRNAs in postoperative cognitive dysfunction (POCD) is still largely unexplored. To identify the genes differentially expressed between non-POCD (NPOCD) and POCD mice, we conducted the whole transcriptome sequencing initially in this study. According to the expression profiles, we observed that circAKT3 was associated with hippocampal neuronal apoptosis in POCD mice. Moreover, we found that circAKT3 overexpression reduced apoptosis of hippocampal neurons and alleviated POCD. Subsequently, through bioinformatics analysis, our data showed that circAKT3 overexpression in vitro and in vivo elevated the abundance of miR-106a-5p significantly, resulting in a decrease of HDAC4 protein and an increase of MEF2C protein. Additionally, this effect of circAKT3 was blocked by miR-106a-5p inhibitor. Interestingly, MEF2C could activate the transcription of miR-106a-5p promoter and form a positive feedback loop. Therefore, our findings revealed more potential modulation ways between circRNA-miRNA and miRNA-mRNA, providing different directions and targets for preclinical studies of POCD.
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Affiliation(s)
- Xuan Wang
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Xiaole Tang
- State Key Laboratory of Oncology in Southern China, Department of Anesthesiology, Sun Yat-Sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Pengfei Zhu
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Dongyu Hua
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Zheng Xie
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Mingke Guo
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Mengxin Que
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Jing Yan
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Xing Li
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Qian Xia
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Xiaoxiao Luo
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jiangjiang Bi
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Yilin Zhao
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Zhiqiang Zhou
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China
| | - Shiyong Li
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China.
| | - Ailin Luo
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan, 430030, Hubei, China.
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Nomura A, Kurokawa K, Takahashi K, Miyagawa K, Mochida-Saito A, Takeda H, Tsuji M. Possible involvement of inflammasomes on the post-stroke cognitive impairment in a mouse model of embolic cerebral infarct. Physiol Behav 2023; 271:114348. [PMID: 37709001 DOI: 10.1016/j.physbeh.2023.114348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/30/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
Post-stroke cognitive impairment (PSCI) of the complications after stroke has been shown to be involved in brain proinflammatory cytokines such as interleukin (IL)-1β (IL-lβ) and IL-18. In the present study, we examined using acetic acid-induced embolic cerebral infarct (ECI) mice whether post-stroke inflammasome activation is involved in the development of PSCI. In behavioral tests, long-term learning and memory assessed using the passive avoidance test were impaired after ECI. On the other hand, the impairment of short-term learning and memory assessed using the Y-maze test was not observed. Furthermore, the phosphorylated α-amino-3hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor subunit glutamate receptor 1 (GluR1) at Ser 831 and Ser 845 protein was found to be significantly decreased in the dorsal hippocampus of ECI mice. In addition, the expression levels of ionized calcium-binding adapter protein 1 (Iba1), glial fibrillary acidic protein (GFAP), apoptosis-associated speck-like protein containing a caspase recruitment domain / target of methylation-induced silencing 1 (ASC/TMS1), Caspase-1, IL-1β, IL-18 and tumor necrosis factor-α (TNF-α) were significantly increased in the dorsal hippocampus of ECI mice. These results indicate that development of PSCI after embolic cerebral infarction is due to a decrease in AMPA receptor subunit GluR1 at Ser831 and Ser845 through the inflammasome activation pathway in the dorsal hippocampus.
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Affiliation(s)
- Ayae Nomura
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuhiro Kurokawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kohei Takahashi
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Kazuya Miyagawa
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Atsumi Mochida-Saito
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Hiroshi Takeda
- Department of Pharmacology, School of Pharmacy at Fukuoka, International University of Health and Welfare, 137-1 Enokizu, Okawa, Fukuoka 831-8501, Japan
| | - Minoru Tsuji
- Department of Pharmacology, School of Pharmacy, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.
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Liu Y, Yang W, Xue J, Chen J, Liu S, Zhang S, Zhang X, Gu X, Dong Y, Qiu P. Neuroinflammation: The central enabler of postoperative cognitive dysfunction. Biomed Pharmacother 2023; 167:115582. [PMID: 37748409 DOI: 10.1016/j.biopha.2023.115582] [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: 07/25/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023] Open
Abstract
The proportion of advanced age patients undergoing surgical procedures is on the rise owing to advancements in surgical and anesthesia technologies as well as an overall aging population. As a complication of anesthesia and surgery, older patients frequently suffer from postoperative cognitive dysfunction (POCD), which may persist for weeks, months or even longer. POCD is a complex pathological process involving multiple pathogenic factors, and its mechanism is yet unclear. Potential theories include inflammation, deposition of pathogenic proteins, imbalance of neurotransmitters, and chronic stress. The identification, prevention, and treatment of POCD are still in the exploratory stages owing to the absence of standardized diagnostic criteria. Undoubtedly, comprehending the development of POCD remains crucial in overcoming the illness. Neuroinflammation is the leading hypothesis and a crucial component of the pathological network of POCD and may have complex interactions with other mechanisms. In this review, we discuss the possible ways in which surgery and anesthesia cause neuroinflammation and investigate the connection between neuroinflammation and the development of POCD. Understanding these mechanisms may likely ensure that future treatment options of POCD are more effective.
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Affiliation(s)
- Yang Liu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning province, China
| | - Wei Yang
- Department of Infectious Disease, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning province, China
| | - Jinqi Xue
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning province, China
| | - Juntong Chen
- Zhejiang University School of Medicine, Hangzhou 311121, Zhejiang province, China
| | - Shiqing Liu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Shijie Zhang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Xiaohui Zhang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China
| | - Xi Gu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning province, China.
| | - Youjing Dong
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China.
| | - Peng Qiu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang 110004, Liaoning Province, China.
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Matias ME, Radulski DR, Rodrigues da Silva T, Raymundi AM, Stern CAJ, Zampronio AR. Involvement of cannabinoid receptors and neuroinflammation in early sepsis: Implications for posttraumatic stress disorder. Int Immunopharmacol 2023; 123:110745. [PMID: 37541107 DOI: 10.1016/j.intimp.2023.110745] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/20/2023] [Accepted: 07/29/2023] [Indexed: 08/06/2023]
Abstract
Sepsis is associated with several comorbidities in survivors, such as posttraumatic stress disorder (PTSD). This study investigated whether rats that survive sepsis develop the generalization of fear memory as a model of PTSD. Responses to interventions that target the endothelin-1 (ET-1)/cannabinoid system and glial activation in the initial stages of sepsis were evaluated. As a control, we evaluated hyperalgesia before fear conditioning. Sepsis was induced by cecal ligation and puncture (CLP) in Wistar rats. CLP-induced sepsis with one or three punctures resulted in fear generalization in the survivors 13 and 20 days after the CLP procedure, a process that was not associated with hyperalgesia. Septic animals were intracerebroventricularly treated with vehicle, the endothelin receptor A (ETA) antagonist BQ123, the cannabinoid CB1 and CB2 receptor antagonists AM251 and AM630, respectively, and the glial blocker minocycline 4 h after CLP. The blockade of either CB1 or ETA receptors increased the survival rate, but only the former reversed fear memory generalization. The endothelinergic system blockade is important for improving survival but not for fear memory. Treatment with the CB2 receptor antagonist or minocycline also reversed the generalization of fear memory but did not increase the survival rate that was associated with CLP. Minocycline treatment also reduced tumor necrosis factor-α levels in the hippocampus suggesting that neuroinflammation is important for the generalization of fear memory induced by CLP. The influence of CLP on the generalization of fear memory was not related to Arc protein expression, a regulator of synaptic plasticity, in the dorsal hippocampus.
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Affiliation(s)
| | | | | | - Ana Maria Raymundi
- Department of Pharmacology, Federal University of Paraná, Curitiba, PR, Brazil
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Liu C, Wu J, Li M, Gao R, Zhang X, Ye-Lehmann S, Song J, Zhu T, Chen C. Smad7 in the hippocampus contributes to memory impairment in aged mice after anesthesia and surgery. J Neuroinflammation 2023; 20:175. [PMID: 37507781 PMCID: PMC10375636 DOI: 10.1186/s12974-023-02849-z] [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: 04/12/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND Postoperative cognitive dysfunction (POCD) is a common neurological complication following anesthesia and surgery. Increasing evidence has demonstrated that neuroinflammation caused by systemic inflammatory responses during the perioperative period is a key factor in the occurrence of POCD. In addition, SMAD family member 7 (Smad7) has been confirmed to play vital roles in the pathogenesis and treatment of inflammatory diseases, such as inflammatory bowel disease. However, whether Smad7 participates in the regulatory process of neuroinflammation and apoptosis in the development of POCD is still unknown. METHODS In this study, a POCD mouse model was constructed by unilateral nephrectomy under anesthesia, and cognitive function was assessed using the fear conditioning test and open field test. The expression of Smad7 at the mRNA and protein levels in the hippocampus 3 days after surgery was examined by qRT-PCR, western blot and immunofluorescence assays. Furthermore, to identify whether the elevation of Smad7 in the hippocampus after unilateral nephrectomy contributes to cognitive impairment, the expression of Smad7 in the hippocampal CA1 region was downregulated by crossing Smad7fl/fl conditional mutant mice and CaMKIIα-Cre line T29-1 transgenic mice or stereotaxic injection of shRNA-Smad7. Inflammation and apoptosis in the hippocampus were assessed by measuring the mRNA levels of typical inflammatory cytokines, including TNF-α, IL-1β, IL-6, CCL2, CXCL1, and CXCL2, and the protein levels of apoptotic proteins, including Bax and Bcl2. In addition, apoptosis in the hippocampus postoperation was investigated by a terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining assay. Finally, western blotting was used to explore how Smad7 mediates inflammation and apoptosis postoperation. RESULTS The results unequivocally revealed that elevated Smad7 in the hippocampal CA1 region significantly inhibited TGF-β signal transduction by blocking Smad2/3 phosphorylation, which enhanced neuroinflammation and apoptosis in the hippocampus and further led to learning and memory impairment after surgery. CONCLUSIONS Our results revealed that Smad7 contributes to cognitive impairment after surgery by enhancing neuroinflammation and apoptosis in the hippocampus and might serve as a promising therapeutic target for the treatment of memory impairment after anesthesia surgery.
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Affiliation(s)
- Changliang Liu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiahui Wu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Ming Li
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Rui Gao
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Xueying Zhang
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China
| | - Shixin Ye-Lehmann
- Diseases and Hormones of the Nervous System, University of Paris-Scalay Bicêtre Hosptial Bât. Grégory Pincus, 80 Rue du Gal Leclerc, Le Kremlin Bicêtre, 94276, CEDEX, Paris, France
| | - Jiangning Song
- Monash Biomedicine Discovery Institute and Monash Data Futures Institute, Monash University, VIC, Melbourne, Australia
| | - Tao Zhu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
| | - Chan Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
- Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Center of Translational Medicine of Anesthesiology, West China Hospital, Sichuan University, Chengdu, China.
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9
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Sun XY, Liu L, Song YT, Wu T, Zheng T, Hao JR, Cao JL, Gao C. Two parallel medial prefrontal cortex-amygdala pathways mediate memory deficits via glutamatergic projection in surgery mice. Cell Rep 2023; 42:112719. [PMID: 37392387 DOI: 10.1016/j.celrep.2023.112719] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 04/19/2023] [Accepted: 06/13/2023] [Indexed: 07/03/2023] Open
Abstract
The neural circuit mechanisms underlying postoperative cognitive dysfunction (POCD) remain elusive. We hypothesized that projections from the medial prefrontal cortex (mPFC) to the amygdala are involved in POCD. A mouse model of POCD in which isoflurane (1.5%) combined with laparotomy was used. Virally assisted tracing techniques were used to label the relevant pathways. Fear conditioning, immunofluorescence, whole-cell patch-clamp recordings, and chemogenetic and optogenetic techniques were applied to investigate the role of mPFC-amygdala projections in POCD. We find that surgery impairs memory consolidation but not retrieval of consolidated memories. In POCD mice, the glutamatergic pathway from the prelimbic cortex to the basolateral amygdala (PL-BLA) shows reduced activity, whereas the glutamatergic pathway from the infralimbic cortex to the basomedial amygdala (IL-BMA) shows enhanced activity. Our study indicates that the hypoactivity in the PL-BLA pathway interrupts memory consolidation, whereas the hyperactivity in the IL-BMA promotes memory extinction, in POCD mice.
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Affiliation(s)
- Xiao-Yu Sun
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China; Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, 160 Pujian Road, Shanghai 200127, China
| | - Le Liu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Yu-Tong Song
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Tong Wu
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Teng Zheng
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Jing-Ru Hao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Jun-Li Cao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Can Gao
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
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10
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Vasincu A, Rusu RN, Ababei DC, Neamțu M, Arcan OD, Macadan I, Beșchea Chiriac S, Bild W, Bild V. Exploring the Therapeutic Potential of Cannabinoid Receptor Antagonists in Inflammation, Diabetes Mellitus, and Obesity. Biomedicines 2023; 11:1667. [PMID: 37371762 DOI: 10.3390/biomedicines11061667] [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: 04/18/2023] [Revised: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Recently, research has greatly expanded the knowledge of the endocannabinoid system (ECS) and its involvement in several therapeutic applications. Cannabinoid receptors (CBRs) are present in nearly every mammalian tissue, performing a vital role in different physiological processes (neuronal development, immune modulation, energy homeostasis). The ECS has an essential role in metabolic control and lipid signaling, making it a potential target for managing conditions such as obesity and diabetes. Its malfunction is closely linked to these pathological conditions. Additionally, the immunomodulatory function of the ECS presents a promising avenue for developing new treatments for various types of acute and chronic inflammatory conditions. Preclinical investigations using peripherally restricted CBR antagonists that do not cross the BBB have shown promise for the treatment of obesity and metabolic diseases, highlighting the importance of continuing efforts to discover novel molecules with superior safety profiles. The purpose of this review is to examine the roles of CB1R and CB2Rs, as well as their antagonists, in relation to the above-mentioned disorders.
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Affiliation(s)
- Alexandru Vasincu
- Department of Pharmacodynamics and Clinical Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
| | - Răzvan-Nicolae Rusu
- Department of Pharmacodynamics and Clinical Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
| | - Daniela-Carmen Ababei
- Department of Pharmacodynamics and Clinical Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
| | - Monica Neamțu
- Department of Pharmacodynamics and Clinical Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
| | - Oana Dana Arcan
- Department of Pharmacodynamics and Clinical Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
| | - Ioana Macadan
- Department of Pharmacodynamics and Clinical Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
| | - Sorin Beșchea Chiriac
- Department of Toxicology, "Ion Ionescu de la Brad" University of Life Sciences, 8 M. Sadoveanu Alley, 700489 Iasi, Romania
| | - Walther Bild
- Department of Physiology, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
- Center of Biomedical Research of the Romanian Academy, 700506 Iasi, Romania
| | - Veronica Bild
- Department of Pharmacodynamics and Clinical Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
- Center of Biomedical Research of the Romanian Academy, 700506 Iasi, Romania
- Center for Advanced Research and Development in Experimental Medicine (CEMEX), "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iasi, Romania
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11
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Chen F, Bai N, Yue F, Hao Y, Wang H, He Y, Lu K. Effects of Oral β-caryophyllene (BCP) Treatment on Perioperative Neurocognitive Disorders: Attenuation of Neuroinflammation Associated with Microglial Activation and Reinforcement of Autophagy Activity in Aged Mice. Brain Res 2023:148425. [PMID: 37244603 DOI: 10.1016/j.brainres.2023.148425] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/21/2023] [Accepted: 05/23/2023] [Indexed: 05/29/2023]
Abstract
Perioperative neurocognitive disorders (PND) are a constellation of cognitive impairments that arise following surgical procedures and anesthesia, with a higher incidence in elderly patients. PND is deeply entwined with microglia-mediated neuroinflammation and disrupted autophagy. β-caryophyllene (BCP) is a natural terpene that occurs widely in dietary plants, and possesses robust anti-inflammatory properties by selectively activating CB2 receptors (CB2R). Accordingly, the present study endeavors to investigate the potential of BCP in ameliorating PND in aged mice, by mitigating hippocampal neuroinflammation and improving autophagy. In this study, an abdominal surgery was utilized to induce perioperative neurocognitive disorders (PND) in aged mice. BCP was administered orally at a dosage of 200 mg/kg for seven consecutive days prior to the scheduled surgery. In order to explore the relationship between BCP and CB2 receptors (CB2R), a co-administration of intraperitoneal injections of the CB2R antagonist AM630 was implemented, 30 minutes preceding the oral gavage of BCP. Postoperative cognitive functions were assessed using Morris water maze (MWM) tests. The extent of hippocampal inflammation was examined by measuring the microglial marker Iba-1 protein levels, Iba-1 and GFAP immunoactivity, as well as IL-1β and IL-6 concentrations. Evaluation of autophagy activity was conducted based on the ratio of LC3B2/LC3B1 and protein levels of Beclin-1, p62, and phospho-mTOR (p-mTOR). After being orally administered BCP, the compromised behavioral performance of abdominal surgical interventions on aged mice was alleviated. This was evident by the extended escape latency, reduced time spent in the target quadrant, and fewer platform crossings observed through MWM testing. While hippocampal CB2R mRNA or protein expression remained unaffected by the abdominal surgical procedure, their levels were significantly upregulated in mice that were administered BCP. Moreover, the oral administration of BCP was able to reduce neuroinflammation in response to microglia activation, as evidenced by the decreased levels of Iba-1 protein and immunoactivity, as well as the reduction of IL-1β and IL-6 concentrations. Additionally, BCP intensified autophagic activity, as detected by increased LC3B2/LC3B1 ratio and Beclin-1 protein levels, coupled with decreased levels of p62 and p-mTOR in the hippocampus of aged mice. Conversely, the treatment of AM630 ameliorated the suppressive effect of BCP triggered by the neuroinflammation caused by microglial activation post-surgery in aged mice (increased Iba-1 protein levels and immunoactivity, accompanied by higher IL-1β and IL-6 concentrations). Furthermore, the pro-autophagy effect of BCP on aged mice following surgery was partially blocked by AM630, culminating in decreased LC3B2/LC3B1 ratio and Beclin-1 protein levels. However, the levels of p62 and p-mTOR remained unchanged by AM630. Our investigation unveils the remarkable therapeutic benefits of oral BCP administration for managing PND in aged mice through the attenuation of neuroinflammation associated with microglial activation and the fortification of autophagy activity. Hence, BCP holds great promise as a formidable candidate englobing various potential physiological mechanisms that would mitigate cognitive decline associated with aging.
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Affiliation(s)
- Fang Chen
- Department of Anesthesiology, Shaanxi Provincial People's Hospital, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an 710068, Shaanxi, China
| | - Ning Bai
- Department of Anesthesiology, Shaanxi Provincial People's Hospital, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an 710068, Shaanxi, China
| | - Fang Yue
- Department of Anesthesiology, Shaanxi Provincial People's Hospital, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an 710068, Shaanxi, China
| | - Yabo Hao
- Department of Anesthesiology, Shaanxi Provincial People's Hospital, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an 710068, Shaanxi, China
| | - Hui Wang
- Department of Anesthesiology, Shaanxi Provincial People's Hospital, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an 710068, Shaanxi, China
| | - Yun He
- Department of Anesthesiology, Shaanxi Provincial Cancer Hospital, Xi'an 710061, Shaanxi, China.
| | - Kai Lu
- Department of Anesthesiology, Shaanxi Provincial People's Hospital, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an 710068, Shaanxi, China.
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12
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Grabon W, Rheims S, Smith J, Bodennec J, Belmeguenai A, Bezin L. CB2 receptor in the CNS: from immune and neuronal modulation to behavior. Neurosci Biobehav Rev 2023; 150:105226. [PMID: 37164044 DOI: 10.1016/j.neubiorev.2023.105226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/20/2023] [Accepted: 05/06/2023] [Indexed: 05/12/2023]
Abstract
Despite low levels of cannabinoid receptor type 2 (CB2R) expression in the central nervous system in human and rodents, a growing body of evidence shows CB2R involvement in many processes at the behavioral level, through both immune and neuronal modulations. Recent in vitro and in vivo evidence have highlighted the complex role of CB2R under physiological and inflammatory conditions. Under neuroinflammatory states, its activation seems to protect the brain and its functions, making it a promising target in a wide range of neurological disorders. Here, we provide a complete and updated overview of CB2R function in the central nervous system of rodents, spanning from modulation of immune function in microglia but also in other cell types, to behavior and neuronal activity, in both physiological and neuroinflammatory contexts.
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Affiliation(s)
- Wanda Grabon
- Université Claude Bernard Lyon 1, CNRS, Inserm, Centre de Recherche en Neurosciences de Lyon, U10208 UMR5292, TIGER Team - F-69500 Bron, France; Epilepsy Institute IDEE, 59 boulevard Pinel - F-69500 Bron, France.
| | - Sylvain Rheims
- Université Claude Bernard Lyon 1, CNRS, Inserm, Centre de Recherche en Neurosciences de Lyon, U10208 UMR5292, TIGER Team - F-69500 Bron, France; Epilepsy Institute IDEE, 59 boulevard Pinel - F-69500 Bron, France; Department of Functional Neurology and Epileptology, Hospices Civils de Lyon - France
| | - Jonathon Smith
- Université Claude Bernard Lyon 1, CNRS, Inserm, Centre de Recherche en Neurosciences de Lyon, U10208 UMR5292, TIGER Team - F-69500 Bron, France; Epilepsy Institute IDEE, 59 boulevard Pinel - F-69500 Bron, France
| | - Jacques Bodennec
- Université Claude Bernard Lyon 1, CNRS, Inserm, Centre de Recherche en Neurosciences de Lyon, U10208 UMR5292, TIGER Team - F-69500 Bron, France; Epilepsy Institute IDEE, 59 boulevard Pinel - F-69500 Bron, France
| | - Amor Belmeguenai
- Université Claude Bernard Lyon 1, CNRS, Inserm, Centre de Recherche en Neurosciences de Lyon, U10208 UMR5292, TIGER Team - F-69500 Bron, France; Epilepsy Institute IDEE, 59 boulevard Pinel - F-69500 Bron, France
| | - Laurent Bezin
- Université Claude Bernard Lyon 1, CNRS, Inserm, Centre de Recherche en Neurosciences de Lyon, U10208 UMR5292, TIGER Team - F-69500 Bron, France.
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13
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Zhu Q, Huang Y, Zhu X, Peng L, Wang H, Gao S, Yang Z, Zhang J, Liu X. Mannose-coated superparamagnetic iron oxide nanozyme for preventing postoperative cognitive dysfunction. Mater Today Bio 2023; 19:100568. [PMID: 36846307 PMCID: PMC9945786 DOI: 10.1016/j.mtbio.2023.100568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/18/2023] [Accepted: 01/27/2023] [Indexed: 02/16/2023] Open
Abstract
Postoperative cognitive dysfunction (POCD) is associated with increased postoperative morbidity and mortality in patients. Excessive production of reactive oxygen species (ROS) and the consequent inflammatory response in the postoperative brain play crucial roles in the development of POCD. However, effective ways to prevent POCD have yet to be developed. Moreover, effective penetration of the blood-brain barrier (BBB) and maintaining viability in vivo are major challenges for preventing POCD using traditional ROS scavengers. Herein, mannose-coated superparamagnetic iron oxide nanoparticles (mSPIONs) were synthesized by co-precipitation method. The BBB penetration of mSPIONs was verified through fluorescent imaging and ICP-MS quantification. The ROS scavenging and anti-inflammatory of mSPIONs were evaluated in H2O2-treated J774A.1 cells and in tibial fracture mice model. The novel object recognition (NOR) and trace-fear conditioning (TFC) were used to test the cognitive function of postoperative mice. The average diameter of mSPIONs was approximately 11 nm. mSPIONs significantly reduced ROS levels in H2O2-treated cells and in hippocampus of surgical mice. mSPIONs administration reduced the levels of IL-1β and TNF-α in the hippocampus and inhibited surgery-upregulated HIF1-α/NF-κB signaling pathway. Moreover, mSPIONs significantly improved the cognitive function of postoperative mice. This study provides a new approach for preventing POCD using a nanozyme.
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Affiliation(s)
- Qianyun Zhu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
| | - Yuting Huang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
| | - Xiaoling Zhu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
| | - Lijun Peng
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
| | - Huan Wang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
| | - Shan Gao
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei, PR China
| | - Zhilai Yang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
| | - Jiqian Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
| | - Xuesheng Liu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, PR China
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14
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Min AK, Keane AM, Weinstein MP, Swartz TH. The impact of cannabinoids on inflammasome signaling in HIV-1 infection. NEUROIMMUNE PHARMACOLOGY AND THERAPEUTICS 2023; 2:79-88. [PMID: 37027347 PMCID: PMC10070009 DOI: 10.1515/nipt-2023-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/08/2023] [Accepted: 02/08/2023] [Indexed: 02/25/2023]
Abstract
Human immunodeficiency virus type 1 (HIV-1) is a chronic disease that afflicts over 38 million people worldwide without a known cure. The advent of effective antiretroviral therapies (ART) has significantly decreased the morbidity and mortality associated with HIV-1 infection in people living with HIV-1 (PWH), thanks to durable virologic suppression. Despite this, people with HIV-1 experience chronic inflammation associated with co-morbidities. While no single known mechanism accounts for chronic inflammation, there is significant evidence to support the role of the NLRP3 inflammasome as a key driver. Numerous studies have demonstrated therapeutic impact of cannabinoids, including exerting modulatory effects on the NLRP3 inflammasome. Given the high rates of cannabinoid use in PWH, it is of great interest to understand the intersecting biology of the role of cannabinoids in HIV-1-associated inflammasome signaling. Here we describe the literature of chronic inflammation in people with HIV, the therapeutic impact of cannabinoids in PWH, endocannabinoids in inflammation, and HIV-1-associated inflammation. We describe a key interaction between cannabinoids, the NLRP3 inflammasome, and HIV-1 viral infection, which supports further investigation of the critical role of cannabinoids in HIV-1 infection and inflammasome signaling.
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Affiliation(s)
- Alice K. Min
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Aislinn M. Keane
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Matthew Paltiel Weinstein
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Talia H. Swartz
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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15
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Sayson LV, Ortiz DM, Lee HJ, Kim M, Custodio RJP, Yun J, Lee CH, Lee YS, Cha HJ, Cheong JH, Kim HJ. Deletion of Cryab increases the vulnerability of mice to the addiction-like effects of the cannabinoid JWH-018 via upregulation of striatal NF-κB expression. Front Pharmacol 2023; 14:1135929. [PMID: 37007015 PMCID: PMC10060981 DOI: 10.3389/fphar.2023.1135929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/07/2023] [Indexed: 03/18/2023] Open
Abstract
Synthetic cannabinoids have exhibited unpredictable abuse liabilities, especially self-administration (SA) responses in normal rodent models, despite seemingly inducing addiction-like effects in humans. Thus, an efficient pre-clinical model must be developed to determine cannabinoid abuse potential in animals and describe the mechanism that may mediate cannabinoid sensitivity. The Cryab knockout (KO) mice were recently discovered to be potentially sensitive to the addictive effects of psychoactive drugs. Herein, we examined the responses of Cryab KO mice to JWH-018 using SA, conditioned place preference, and electroencephalography. Additionally, the effects of repeated JWH-018 exposure on endocannabinoid- and dopamine-related genes in various addiction-associated brain regions were examined, along with protein expressions involving neuroinflammation and synaptic plasticity. Cryab KO mice exhibited greater cannabinoid-induced SA responses and place preference, along with divergent gamma wave alterations, compared to wild-type (WT) mice, implying their higher sensitivity to cannabinoids. Endocannabinoid- or dopamine-related mRNA expressions and accumbal dopamine concentrations after repeated JWH-018 exposure were not significantly different between the WT and Cryab KO mice. Further analyses revealed that repeated JWH-018 administration led to possibly greater neuroinflammation in Cryab KO mice, which may arise from upregulated NF-κB, accompanied by higher expressions of synaptic plasticity markers, which might have contributed to the development of cannabinoid addiction-related behavior in Cryab KO mice. These findings signify that increased neuroinflammation via NF-κB may mediate the enhanced addiction-like responses of Cryab KO mice to cannabinoids. Altogether, Cryab KO mice may be a potential model for cannabinoid abuse susceptibility.
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Affiliation(s)
- Leandro Val Sayson
- Department of Pharmacy, Uimyung Research Institute for Neuroscience, Sahmyook University, Seoul, Republic of Korea
| | - Darlene Mae Ortiz
- Department of Pharmacy, Uimyung Research Institute for Neuroscience, Sahmyook University, Seoul, Republic of Korea
| | - Hyun Jun Lee
- Department of Pharmacy, Uimyung Research Institute for Neuroscience, Sahmyook University, Seoul, Republic of Korea
| | - Mikyung Kim
- Department of Chemistry and Life Science, Sahmyook University, Seoul, Republic of Korea
| | - Raly James Perez Custodio
- Department of Ergonomics, Leibniz Research Centre for Working Environment and Human Factors—IfADo, Dortmund, Germany
| | - Jaesuk Yun
- College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Chungcheongbuk-do, Republic of Korea
| | - Chae Hyeon Lee
- Medicinal Chemistry Laboratory, Department of Fundamental Pharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Yong Sup Lee
- Medicinal Chemistry Laboratory, Department of Fundamental Pharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Hye Jin Cha
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Gyeongsangnam–do, Republic of Korea
| | - Jae Hoon Cheong
- Institute for New Drug Development, School of Pharmacy, Jeonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
- *Correspondence: Jae Hoon Cheong, ; Hee Jin Kim,
| | - Hee Jin Kim
- Department of Pharmacy, Uimyung Research Institute for Neuroscience, Sahmyook University, Seoul, Republic of Korea
- *Correspondence: Jae Hoon Cheong, ; Hee Jin Kim,
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16
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Min AK, Fortune T, Rodriguez N, Hedge E, Swartz TH. Inflammasomes as mediators of inflammation in HIV-1 infection. Transl Res 2023; 252:1-8. [PMID: 35917903 PMCID: PMC10160852 DOI: 10.1016/j.trsl.2022.07.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 01/14/2023]
Abstract
Human immunodeficiency virus type 1 (HIV-1) infection is a chronic disease without a known cure. The advent of effective antiretroviral therapy (ART) has enabled people with HIV (PWH) to have significantly prolonged life expectancies. As a result, morbidity and mortality associated with HIV-1 infection have declined considerably. However, these individuals experience chronic systemic inflammation whose multifaceted etiology is associated with other numerous comorbidities. Inflammasomes are vital mediators that contribute to inflammatory signaling in HIV-1 infection. Here, we provide an overview of the inflammatory pathway that underlies HIV-1 infection, explicitly highlighting the role of the NLRP3 inflammasome. We also delineate the current literature on inflammasomes and the therapeutic targeting strategies aimed at the NLRP3 inflammasome to moderate HIV-1 infection-associated inflammation. Here we describe the NLRP3 inflammasome as a key pathway in developing novel therapeutic targets to block HIV-1 replication and HIV-1-associated inflammatory signaling. Controlling the inflammatory pathways is critical in alleviating the morbidities and mortality associated with chronic HIV-1 infection in PWH.
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Affiliation(s)
- Alice K Min
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Trinisia Fortune
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Natalia Rodriguez
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Esha Hedge
- University of South Carolina, Columbia, South Carolina
| | - Talia H Swartz
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.
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17
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Barreto Chang OL, Possin KL, Maze M. Age-Related Perioperative Neurocognitive Disorders: Experimental Models and Druggable Targets. Annu Rev Pharmacol Toxicol 2023; 63:321-340. [PMID: 36100220 DOI: 10.1146/annurev-pharmtox-051921-112525] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
With the worldwide increase in life span, surgical patients are becoming older and have a greater propensity for postoperative cognitive impairment, either new onset or through deterioration of an existing condition; in both conditions, knowledge of the patient's preoperative cognitive function and postoperative cognitive trajectory is imperative. We describe the clinical utility of a tablet-based technique for rapid assessment of the memory and attentiveness domains required for executive function. The pathogenic mechanisms for perioperative neurocognitive disorders have been investigated in animal models in which excessive and/or prolonged postoperative neuroinflammation has emerged as a likely contender. The cellular and molecular species involved in postoperative neuroinflammation are the putative targets for future therapeutic interventions that are efficacious and do not interfere with the surgical patient's healing process.
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Affiliation(s)
- Odmara L Barreto Chang
- Department of Anesthesia and Perioperative Care, University of California San Francisco, San Francisco, California, USA;
| | - Katherine L Possin
- Memory and Aging Center, Department of Neurology, and Global Brain Health Institute, University of California San Francisco, San Francisco, California, USA
| | - Mervyn Maze
- Department of Anesthesia and Perioperative Care, University of California San Francisco, San Francisco, California, USA; .,Center for Cerebrovascular Research, University of California San Francisco, San Francisco, California, USA
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Cheng C, Wan H, Cong P, Huang X, Wu T, He M, Zhang Q, Xiong L, Tian L. Targeting neuroinflammation as a preventive and therapeutic approach for perioperative neurocognitive disorders. J Neuroinflammation 2022; 19:297. [PMID: 36503642 PMCID: PMC9743533 DOI: 10.1186/s12974-022-02656-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 11/23/2022] [Indexed: 12/14/2022] Open
Abstract
Perioperative neurocognitive disorders (PND) is a common postoperative complication associated with regional or general anesthesia and surgery. Growing evidence in both patient and animal models of PND suggested that neuroinflammation plays a critical role in the development and progression of this problem, therefore, mounting efforts have been made to develop novel therapeutic approaches for PND by targeting specific factors or steps alongside the neuroinflammation. Multiple studies have shown that perioperative anti-neuroinflammatory strategies via administering pharmacologic agents or performing nonpharmacologic approaches exert benefits in the prevention and management of PND, although more clinical evidence is urgently needed to testify or confirm these results. Furthermore, long-term effects and outcomes with respect to cognitive functions and side effects are needed to be observed. In this review, we discuss recent preclinical and clinical studies published within a decade as potential preventive and therapeutic approaches targeting neuroinflammation for PND.
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Affiliation(s)
- Chun Cheng
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Hanxi Wan
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Peilin Cong
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Xinwei Huang
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Tingmei Wu
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Mengfan He
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Qian Zhang
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Lize Xiong
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
| | - Li Tian
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai, 200434 China ,grid.24516.340000000123704535Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434 China ,grid.24516.340000000123704535Clinical Research Center for Anesthesiology and Perioperative Medicine, Tongji University, Shanghai, 200434 China
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Zhou HY, Huai YP, Jin X, Yan P, Tang XJ, Wang JY, Shi N, Niu M, Meng ZX, Wang X. An enriched environment reduces hippocampal inflammatory response and improves cognitive function in a mouse model of stroke. Neural Regen Res 2022; 17:2497-2503. [PMID: 35535902 PMCID: PMC9120675 DOI: 10.4103/1673-5374.338999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
An enriched environment is used as a behavioral intervention therapy that applies sensory, motor, and social stimulation, and has been used in basic and clinical research of various neurological diseases. In this study, we established mouse models of photothrombotic stroke and, 24 hours later, raised them in a standard, enriched, or isolated environment for 4 weeks. Compared with the mice raised in a standard environment, the cognitive function of mice raised in an enriched environment was better and the pathological damage in the hippocampal CA1 region was remarkably alleviated. Furthermore, protein expression levels of tumor necrosis factor receptor-associated factor 6, nuclear factor κB p65, interleukin-6, and tumor necrosis factor α, and the mRNA expression level of tumor necrosis factor receptor-associated factor 6 were greatly lower, while the expression level of miR-146a-5p was higher. Compared with the mice raised in a standard environment, changes in these indices in mice raised in an isolated environment were opposite to mice raised in an enriched environment. These findings suggest that different living environments affect the hippocampal inflammatory response and cognitive function in a mouse model of stroke. An enriched environment can improve cognitive function following stroke through up-regulation of miR-146a-5p expression and a reduction in the inflammatory response.
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Affiliation(s)
- Hong-Yu Zhou
- Department of Rehabilitation Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University (Clinical Medical College, Yangzhou University), Yangzhou, Jiangsu Province, China
| | - Ya-Ping Huai
- Department of Rehabilitation Medicine, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong Province, China
| | - Xing Jin
- Department of Rehabilitation Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University (Clinical Medical College, Yangzhou University), Yangzhou, Jiangsu Province, China
| | - Ping Yan
- School of Nursing, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Xiao-Jia Tang
- Department of Rehabilitation Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University (Clinical Medical College, Yangzhou University), Yangzhou, Jiangsu Province, China
| | - Jun-Ya Wang
- Department of Rehabilitation Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University (Clinical Medical College, Yangzhou University), Yangzhou, Jiangsu Province, China
| | - Nan Shi
- School of Nursing, Yangzhou University, Yangzhou, Jiangsu Province, China
| | - Meng Niu
- Dalian Medical University, Dalian, Liaoning Province, China
| | - Zhao-Xiang Meng
- Department of Rehabilitation Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University (Clinical Medical College, Yangzhou University), Yangzhou, Jiangsu Province, China
| | - Xin Wang
- Department of Rehabilitation Medicine, Northern Jiangsu People's Hospital Affiliated to Yangzhou University (Clinical Medical College, Yangzhou University), Yangzhou, Jiangsu Province, China
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Han X, Cheng X, Xu J, Liu Y, Zhou J, Jiang L, Gu X, Xia T. Activation of TREM2 attenuates neuroinflammation via PI3K/Akt signaling pathway to improve postoperative cognitive dysfunction in mice. Neuropharmacology 2022; 219:109231. [PMID: 36041498 DOI: 10.1016/j.neuropharm.2022.109231] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 11/30/2022]
Abstract
Postoperative cognitive dysfunction (POCD) is a common postoperative complication involving the central nervous system, but the underlying mechanism is not well understood. Neuroinflammation secondary to surgery and anesthesia is strongly correlated with POCD. A key aspect of neuroinflammation is microglia activation. Triggering receptor expressed on myeloid cells (TREM)2, which is highly expressed in microglia, is an innate immune receptor that modulates microglia function. In this study we investigated the role of TREM2 in cognitive impairment and microglia-mediated neuroinflammation using a mouse model of POCD and in vitro systems. We found that hippocampus-dependent learning and memory were impaired in POCD mice, which was accompanied by activation of microglia and downregulation of TREM2. Pretreatment with the TREM2 agonist heat shock protein (HSP)60 inhibited surgery-induced microglia activation and alleviated postoperative cognitive impairment. In BV2 microglial cells, the phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002 significantly reversed the attenuation of TREM2 activation on lipopolysaccharide (LPS)-induced neuroinflammation and abrogated the protective effect of activated TREM2 against LPS-induced neuronal injury in a microglia/neuron coculture system. Accordingly, the beneficial effects of TREM2 activation on cognitive function were reversed by preoperative administration of LY294002 in the POCD mouse model. These results demonstrate that TREM2 is involved in the regulation of the inflammatory response mediated by microglia and cognitive impairment following surgery. Activation of TREM2 can attenuate neuroinflammation by modulating PI3K/protein kinase B (Akt) signaling, thereby alleviating postoperative learning and memory deficits.
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Affiliation(s)
- Xue Han
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China; Medical School, Nanjing University, Nanjing, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China
| | - Xiaolei Cheng
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China
| | - Jiyan Xu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China; Medical School, Nanjing University, Nanjing, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China
| | - Yujia Liu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China; Medical School, Nanjing University, Nanjing, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China
| | - Jiawen Zhou
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China; Medical School, Nanjing University, Nanjing, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China
| | - Linhao Jiang
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China; Medical School, Nanjing University, Nanjing, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China
| | - Xiaoping Gu
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China.
| | - Tianjiao Xia
- Department of Anesthesiology, Affiliated Drum Tower Hospital of Medical School of Nanjing University, Nanjing, 210008, China; Medical School, Nanjing University, Nanjing, 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, China; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.
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Ferranti AS, Foster DJ. Cannabinoid type-2 receptors: An emerging target for regulating schizophrenia-relevant brain circuits. Front Neurosci 2022; 16:925792. [PMID: 36033626 PMCID: PMC9403189 DOI: 10.3389/fnins.2022.925792] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 07/27/2022] [Indexed: 11/17/2022] Open
Abstract
Although the cannabinoid type-2 receptor (CB2) is highly expressed in the immune system, emerging evidence points to CB2 playing a key role in regulating neuronal function in the central nervous system. Recent anatomical studies, combined with electrophysiological studies, indicate that CB2 receptors are expressed in specific dopaminergic and glutamatergic brain circuits that are hyperactive in schizophrenia patients. The ability of CB2 receptors to inhibit dopaminergic and hippocampal circuits, combined with the anti-inflammatory effects of CB2 receptor activation, make this receptor an intriguing target for treating schizophrenia, a disease where novel interventions that move beyond dopamine receptor antagonists are desperately needed. The development of new CB2-related pharmacological and genetic tools, including the first small molecule positive allosteric modulator of CB2 receptors, has greatly advanced our understanding of this receptor. While more work is needed to further elucidate the translational value of selectively targeting CB2 receptors with respect to schizophrenia, the studies discussed below could suggest that CB2 receptors are anatomically located in schizophrenia-relevant circuits, where the physiological consequence of CB2 receptor activation could correct circuit-based deficits commonly associated with positive and cognitive deficits.
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Affiliation(s)
- Anthony S. Ferranti
- Department of Pharmacology, Vanderbilt University, Nashville, TN, United States
- Warren Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, TN, United States
| | - Daniel J. Foster
- Department of Pharmacology, Physiology and Neuroscience, University of South Carolina School of Medicine, Columbia, SC, United States
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Lu B, Yuan H, Mo L, Sun D, Liu R, Zhou H, Zhai X, Wang R, Chen J, Meng B. Effects of different types of non-cardiac surgical trauma on hippocampus-dependent memory and neuroinflammation. Front Behav Neurosci 2022; 16:950093. [PMID: 36035019 PMCID: PMC9399929 DOI: 10.3389/fnbeh.2022.950093] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Background Older individuals have been reported to suffer from cognitive disorders after surgery. Various types of surgical trauma have been used to establish postoperative cognitive dysfunction (POCD) animal models in preclinical studies. However, few comparative analyses of these animal models were conducted. Methods Tibial surgery, abdominal surgery, and extended abdominal surgery were performed on aged ICR mice to establish POCD models. Behavioral tests included open field, novel object recognition, fear conditioning, and Morris water maze tests. The Z-score methodology was adopted to obtain a comprehensive and integrated memory performance profile. The changes in hippocampal neuroinflammation were analyzed by ELISA, PCR, and immunofluorescence. Results In this study, we found that each type of non-cardiac surgical trauma has a different effects on locomotor activity. Tibial and extended abdominal surgeries led to more significant cognitive impairment than abdominal surgery. Inflammatory cytokines peaked on postoperative day 1 and decreased to control levels on days 3 and 7. Hippocampal neuroinflammation indicators between the three surgery types on postoperative day 1 had no statistical differences. Conclusion Overall, the type and intensity of non-cardiac surgical trauma can affect cognitive behavioral outcomes and central inflammation. The shortcomings and emerging issues of POCD animal research methods need to be further studied and solved.
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Affiliation(s)
- Bo Lu
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Hui Yuan
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Lan Mo
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Daofan Sun
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Rongjun Liu
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Han Zhou
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Xiaojie Zhai
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Ruichun Wang
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Junping Chen
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
- *Correspondence: Junping Chen,
| | - Bo Meng
- Department of Anesthesiology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, China
- Bo Meng,
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Li Y, Wu ZY, Zheng WC, Wang JX, Yue-Xin, Song RX, Gao JG. Esketamine alleviates postoperative cognitive decline via stimulator of interferon genes/ TANK-binding kinase 1 signaling pathway in aged rats. Brain Res Bull 2022; 187:169-180. [PMID: 35839904 DOI: 10.1016/j.brainresbull.2022.07.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 06/17/2022] [Accepted: 07/11/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Postoperative cognitive decline (POCD) is a common complication after surgery and anesthesia among the elderly. Yet the potential mechanism of POCD remains ambiguous, with limited therapeutic measures currently available. Ketamine has been reported to attenuate POCD after cardiac surgery. Herein, we tried to determine the effect of esketamine (the S-enantiomer of ketamine) on POCD and the possible molecular mechanisms. METHODS We investigated the effects of esketamine (10 mg/kg) on POCD using an exploratory laparotomy model in aged SD rats (24 months). Open field, novel object recognition, and morris water maze tests were performed on day 30 post-surgery. 24 h or 30 d post-surgery, brain tissue from the hippocampus and ventromedial prefrontal cortex (vmPFC) was harvested and subjected to histopathology and molecular biology analysis. During the in vitro experiment, primary astrocytes from the hippocampus and vmPFC were exposed to lipopolysaccharide (LPS) to investigate the pathological changes in astrocytes during the process of POCD. RESULTS Our results indicated that exploratory laparotomy could induce significant cognitive and memory decline, accompanied by A2-type astrocytes phenotype loss and increased expression of neuron Aβ-42, astrocytes GABA, stimulator of interferon genes (STING) and TANK-binding kinase 1 (TBK1). In addition, LPS exposure significantly decreased the mitochondrial membrane potential and upregulated the level of pyroptosis-associated proteins, including cleaved caspase-1 and IL-18. Notably, treatment with esketamine reversed these abnormalities in vivo and vitro. However, ADU-S100, a special STING activator, suppressed the protective effects of esketamine to a certain extent. Finally, C-176, an antagonist of STING, further enhanced the protective effects of esketamine against POCD. CONCLUSIONS Findings of our study suggest that esketamine can alleviate surgery-induced POCD in rats via inhibition of the STING/TBK1 signaling pathway.
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Affiliation(s)
- Yan Li
- Department of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China; Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou, Hebei, China
| | - Zhi-You Wu
- Department of Neurosurgery, Cangzhou Central Hospital, Graduate School of Hebei Medical University, Heibei, China
| | - Wei-Chao Zheng
- Department of Anesthesiology, Cangzhou Central Hospital, Graduate School of Hebei Medical University, Heibei, China
| | - Jie-Xia Wang
- Department of Anesthesiology, Cangzhou Central Hospital, Graduate School of Hebei Medical University, Heibei, China
| | - Yue-Xin
- Department of Anesthesiology, Cangzhou Central Hospital, Graduate School of Hebei Medical University, Heibei, China
| | - Rong-Xin Song
- Department of Anesthesiology, Cangzhou Central Hospital, Graduate School of Hebei Medical University, Heibei, China
| | - Jin-Gui Gao
- Department of Anesthesiology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
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sVCAM1 in the Hippocampus Contributes to Postoperative Cognitive Dysfunction in Mice by Inducing Microglial Activation Through the VLA-4 Receptor. Mol Neurobiol 2022; 59:5485-5503. [PMID: 35727436 DOI: 10.1007/s12035-022-02924-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 06/10/2022] [Indexed: 10/18/2022]
Abstract
Postoperative cognitive dysfunction (POCD) is a severe postsurgical complication, but its underlying mechanisms remain unclear. Neuroinflammation mediated by microglial activation plays a major role in POCD pathophysiology. Upregulation of vascular cell adhesion molecule 1 (VCAM1) on brain endothelial cells is closely correlated with microglial activation in the mouse hippocampus. However, the role of VCAM1 upregulation in microglial activation remains unknown. Soluble VCAM1 (sVCAM1) activates the very late antigen-4 (VLA-4) receptor under inflammatory conditions. Therefore, we hypothesized that sVCAM1 which is shed from VCAM1 contributes to POCD by triggering hippocampal microglial activation through the VLA-4 receptor. We found that VCAM1 and sVCAM1 expression in the mouse hippocampus was upregulated after surgery, and the upregulation was accompanied by hippocampal microglial activation. sVCAM1 levels in mouse and human serum were increased after surgery. Anti-VCAM1 treatment inhibited microglial activation, proinflammatory cytokine production, VLA-4 expression and P38 mitogen-associated protein kinase (MAPK) pathway activation and attenuated hippocampal-dependent cognitive dysfunction. In vitro, recombinant sVCAM1 promoted M1 polarization in BV2 cells, increased VLA-4 expression and activated the P38 MAPK pathway. These effects were reversed by VLA-4 receptor blockade. Anti-VLA-4 treatment ameliorated hippocampal-dependent cognitive dysfunction after surgery by inhibiting microglial activation, proinflammatory cytokine production and P38 pathway activation. In conclusion, increased sVCAM1 in the hippocampus is involved in microglial activation and cognitive dysfunction induced by surgery. Inhibiting the sVCAM1-VLA-4 interaction in microglia may be a therapeutic strategy for POCD.
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Raphael-Mizrahi B, Attar-Lamdar M, Chourasia M, Cascio MG, Shurki A, Tam J, Neuman M, Rimmerman N, Vogel Z, Shteyer A, Pertwee RG, Zimmer A, Kogan N, Bab I, Gabet Y. Osteogenic growth peptide is a potent anti-inflammatory and bone preserving hormone via cannabinoid receptor type 2. eLife 2022; 11:65834. [PMID: 35604006 PMCID: PMC9154745 DOI: 10.7554/elife.65834] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 05/22/2022] [Indexed: 11/13/2022] Open
Abstract
The endocannabinoid system consists mainly of 2-arachidonoylglycerol and anandamide, as well as cannabinoid receptor type 1 (CB1) and type 2 (CB2). Based on previous studies, we hypothesized that a circulating peptide previously identified as Osteogenic Growth Peptide (OGP) maintains a bone-protective CB2 tone. We tested OGP activity in mouse models and cells, and in human osteoblasts. We show that the OGP effects on osteoblast proliferation, osteoclastogenesis, and macrophage inflammation in vitro, as well as rescue of ovariectomy-induced bone loss and prevention of ear edema in vivo are all abrogated by genetic or pharmacological ablation of CB2. We also demonstrate that OGP binds at CB2 and may act as both an agonist and positive allosteric modulator in the presence of other lipophilic agonists. In premenopausal women, OGP circulating levels significantly decline with age. In adult mice, exogenous administration of OGP completely prevented age-related bone loss. Our findings suggest that OGP attenuates age-related bone loss by maintaining a skeletal CB2 tone. Importantly, they also indicate the occurrence of an endogenous peptide that signals via CB2 receptor in health and disease.
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Affiliation(s)
| | - Malka Attar-Lamdar
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Mukesh Chourasia
- Institute for Drug Research, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Maria G Cascio
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Avital Shurki
- Institute for Drug Research, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Joseph Tam
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Moshe Neuman
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Neta Rimmerman
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
| | - Zvi Vogel
- Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel
| | - Arie Shteyer
- Department of Oral and Maxillofacial Surgery, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Roger G Pertwee
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Andreas Zimmer
- Institute of Molecular Psychiatry, University of Bonn, Bonn, Germany
| | - Natalya Kogan
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Itai Bab
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yankel Gabet
- Department of Anatomy and Anthropology, Tel Aviv University, Tel Aviv, Israel
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26
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Ten-Blanco M, Flores Á, Pereda-Pérez I, Piscitelli F, Izquierdo-Luengo C, Cristino L, Romero J, Hillard CJ, Maldonado R, Di Marzo V, Berrendero F. Amygdalar CB2 cannabinoid receptor mediates fear extinction deficits promoted by orexin-A/hypocretin-1. Biomed Pharmacother 2022; 149:112925. [PMID: 35477218 DOI: 10.1016/j.biopha.2022.112925] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/25/2022] [Accepted: 04/04/2022] [Indexed: 11/02/2022] Open
Abstract
Anxiety and stress disorders are often characterized by an inability to extinguish learned fear responses. Orexins/hypocretins are involved in the modulation of aversive memories, and dysregulation of this system may contribute to the aetiology of anxiety disorders characterized by pathological fear. The mechanisms by which orexins regulate fear are unknown. Here we investigated the role of the endogenous cannabinoid system in the impaired fear extinction induced by orexin-A (OXA) in male mice. The selective inhibitor of 2-arachidonoylglycerol (2-AG) biosynthesis O7460 abolished the fear extinction deficits induced by OXA. Accordingly, increased 2-AG levels were observed in the amygdala and hippocampus of mice treated with OXA that do not extinguish fear, suggesting that high levels of this endocannabinoid are related to poor extinction. Impairment of fear extinction induced by OXA was associated with increased expression of CB2 cannabinoid receptor (CB2R) in microglial cells of the basolateral amygdala. Consistently, the intra-amygdala infusion of the CB2R antagonist AM630 completely blocked the impaired extinction promoted by OXA. Microglial and CB2R expression depletion in the amygdala with PLX5622 chow also prevented these extinction deficits. These results show that overactivation of the orexin system leads to impaired fear extinction through 2-AG and amygdalar CB2R. This novel mechanism could be of relevance for the development of novel potential approaches to treat diseases associated with inappropriate retention of fear, such as post-traumatic stress disorder, panic anxiety and phobias.
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Affiliation(s)
- Marc Ten-Blanco
- Instituto de Investigaciones Biosanitarias, Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - África Flores
- Laboratory of Neuropharmacology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, PRBB, 08003 Barcelona, Spain
| | - Inmaculada Pereda-Pérez
- Instituto de Investigaciones Biosanitarias, Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Fabiana Piscitelli
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry (ICB), National Research Council (CNR), Pozzuoli, Italy
| | - Cristina Izquierdo-Luengo
- Instituto de Investigaciones Biosanitarias, Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Luigia Cristino
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry (ICB), National Research Council (CNR), Pozzuoli, Italy
| | - Julián Romero
- Instituto de Investigaciones Biosanitarias, Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223 Madrid, Spain
| | - Cecilia J Hillard
- Department of Pharmacology and Toxicology and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Rafael Maldonado
- Laboratory of Neuropharmacology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, PRBB, 08003 Barcelona, Spain
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry (ICB), National Research Council (CNR), Pozzuoli, Italy; Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Faculty of Medicine and Faculty of Agriculture and Food Sciences, Hearth and Lung Research Institute (IUCPQ), Institute of Nutrition and Functional Foods (INAF) and NUTRISS Center, Université Laval, Quebec City, Canada
| | - Fernando Berrendero
- Instituto de Investigaciones Biosanitarias, Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, Pozuelo de Alarcón, 28223 Madrid, Spain.
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Yang L, Li Z, Xu Z, Zhang B, Liu A, Zheng F, Zhan J. Protective Effects of Cannabinoid Type 2 Receptor Against Microglia Overactivation and Neuronal Pyroptosis in Sepsis-Associated Encephalopathy. Neuroscience 2022; 493:99-108. [PMID: 35460837 DOI: 10.1016/j.neuroscience.2022.04.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 04/11/2022] [Accepted: 04/12/2022] [Indexed: 12/22/2022]
Abstract
Sepsis-associated encephalopathy (SAE) has close association with long-term cognitive deficits, resulting in increased mortality. The mechanism of SAE is complicate, including excessive microglial activation and neuroinflammation. Pyroptosis is a type of proinflammatory cell death program. Cannabinoid type 2 receptor (CB2R) has been proved to be effective in neuronal protection and survival promotion. Microglia play a role in CB2R mediated neuronal protection when neurons are exposed to noxious stimuli. However, the underlying mechanisms involved in this process still remain to be explored. Previous studies have demonstrated that CB2R can reduce sepsis-induced lung injury by inhibiting pyroptosis. Here, SAE model was established by cecal ligation and puncture (CLP). Open field test (OFT), novel object recognition test (NORT), and Morris water maze (MWM) test were performed to assess cognitive function. Brain samples were obtained to detect cell injury, cytokine, CB2R and pyroptosis-associated protein expression by Hematoxylin-Eosin (HE) staining, Enzyme-linked immunosorbent assay (ELISA), Western blotting and Immunofluorescence staining. CLP could induce microglia hyperactivation and neuronal pyroptosis, aggravating brain tissue destruction and cognitive dysfunction. The activation of CB2R could have a protective effect against SAE by inhibiting microglia activity and neuronal pyroptosis. This will provide a new therapeutic option for the treatment of SAE.
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Affiliation(s)
- Liu Yang
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan 430071, Hubei, People's Republic of China
| | - Zhen Li
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan 430071, Hubei, People's Republic of China
| | - Zujin Xu
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan 430071, Hubei, People's Republic of China
| | - Bin Zhang
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan 430071, Hubei, People's Republic of China
| | - Anpeng Liu
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan 430071, Hubei, People's Republic of China
| | - Feng Zheng
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan 430071, Hubei, People's Republic of China.
| | - Jia Zhan
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, Wuhan 430071, Hubei, People's Republic of China.
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28
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Zhang L, Wang X, Yu W, Ying J, Fang P, Zheng Q, Feng X, Hu J, Xiao F, Chen S, Wei G, Lin Y, Liu X, Yang D, Fang Y, Xu G, Hua F. CB2R Activation Regulates TFEB-Mediated Autophagy and Affects Lipid Metabolism and Inflammation of Astrocytes in POCD. Front Immunol 2022; 13:836494. [PMID: 35392078 PMCID: PMC8981088 DOI: 10.3389/fimmu.2022.836494] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
Evidence suggests that the accumulation of lipid drots (LDs) accelerates damage to mitochondria and increases the release of inflammatory factors. These have been implicated as a mechanism underlying neurodegenerative diseases or tumors and aging-related diseases such as postoperative cognitive dysfunction (POCD), nevertheless, accumulation of lipid droplets has not been extensively studied in the central nervous system (CNS). Here, we found that after surgery, there was activation of astrocytes and lipid accumulation in the hippocampus. However, cannabinoid receptor type II (CB2R) activation significantly reduced lipid accumulation in astrocytes and change the expression of genes related to lipid metabolism. CB2R reduces the release of the inflammatory factors interleukin-1 beta (IL-1β) and interleukin 6 (IL-6) in peripheral serum and simultaneously improves cognitive ability in mice with POCD. Further research on mechanisms indicates that CB2R activation promotes the nuclear entry of the bHLH-leucine zipper transcription factor, the transcription factor EB (TFEB), and which is a master transcription factor of the autophagy–lysosomal pathway, also reduces TFEB-S211 phosphorylation. When CB2R promotes TFEB into the nucleus, TFEB binds at two sites within promoter region of PGC1α, promoting PGC1α transcription and accelerating downstream lipid metabolism. The aforementioned process leads to autophagy activation and decreases cellular lipid content. This study uncovers a new mechanism allowing CB2R to regulate lipid metabolism and inflammation in POCD.
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Affiliation(s)
- Lieliang Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Xifeng Wang
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wen Yu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Jun Ying
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Pu Fang
- Department of Neurology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qingcui Zheng
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Xiaojin Feng
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Jialing Hu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Fan Xiao
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Shoulin Chen
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Gen Wei
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Yue Lin
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Xing Liu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Danying Yang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Yang Fang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Guohai Xu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Fuzhou Hua
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
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Luo A, Li S, Wang X, Xie Z, Li S, Hua D. Cefazolin Improves Anesthesia and Surgery-Induced Cognitive Impairments by Modulating Blood-Brain Barrier Function, Gut Bacteria and Short Chain Fatty Acids. Front Aging Neurosci 2021; 13:748637. [PMID: 34720997 PMCID: PMC8548472 DOI: 10.3389/fnagi.2021.748637] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/23/2021] [Indexed: 12/22/2022] Open
Abstract
Emerging evidence suggests that anesthesia and surgery may induce gut dysbiosis. Gut dysbiosis leads to imbalance in circulating contents of microbiota-derived metabolites and disrupts the integrity of the blood-brain barrier (BBB), contributing to postoperative cognitive dysfunction (POCD). The composition of gut microbiota may be influenced by various antibiotics. However, how perioperative use of antibiotics affects POCD needs more explorations. In the present study, we explored the effect of cefazolin, a common antibiotic used in perioperative period, on cognitive function, BBB integrity, gut bacteria and short chain fatty acids (SCFAs), a group of widely studied metabolites in aged mice, using 18-month-old male mice. Significant BBB disruptions and decreased levels of tight junction proteins, zonula occludens-1 (ZO-1) and Occludin (OCLN) were seen in the mice of POCD model. Cefazolin treatment attenuated these changes induced by anesthesia and surgery. Furthermore, cefazolin reversed the changes in several fecal bacteria (β-, γ/δ-, ε-Proteobacteria, and Bacteroidetes) as determined by qPCR tests. Analysis of plasma SCFAs showed that almost all types of SCFAs were reduced in POCD and cefazolin administration reversed the changes in expression of the two most abundant SCFAs (acetic and propionic acids). In conclusion, this study demonstrated that cefazolin improved POCD. Mechanistically, cefazolin suppressed the disruption of BBB, gut microbiota or SCFAs, thereby ameliorating POCD.
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Affiliation(s)
- Ailin Luo
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shan Li
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xuan Wang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zheng Xie
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shiyong Li
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dongyu Hua
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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30
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Visvanathar R, Papanikolaou M, Nôga DA, Pádua-Reis M, Tort ABL, Blunder M. Hippocampal Cb 2 receptors: an untold story. Rev Neurosci 2021; 33:413-426. [PMID: 34717053 DOI: 10.1515/revneuro-2021-0109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 10/01/2021] [Indexed: 12/13/2022]
Abstract
The field of cannabinoid research has been receiving ever-growing interest. Ongoing debates worldwide about the legislation of medical cannabis further motivates research into cannabinoid function within the central nervous system (CNS). To date, two well-characterized cannabinoid receptors exist. While most research has investigated Cb1 receptors (Cb1Rs), Cb2 receptors (Cb2Rs) in the brain have started to attract considerable interest in recent years. With indisputable evidence showing the wide-distribution of Cb2Rs in the brain of different species, they are no longer considered just peripheral receptors. However, in contrast to Cb1Rs, the functionality of central Cb2Rs remains largely unexplored. Here we review recent studies on hippocampal Cb2Rs. While conflicting results about their function have been reported, we have made significant progress in understanding the involvement of Cb2Rs in modulating cellular properties and network excitability. Moreover, Cb2Rs have been shown to be expressed in different subregions of the hippocampus, challenging our prior understanding of the endocannabinoid system. Although more insight into their functional roles is necessary, we propose that targeting hippocampal Cb2Rs may offer novel therapies for diseases related to memory and adult neurogenesis deficits.
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Affiliation(s)
- Robin Visvanathar
- Behavioral Neurophysiology, Department of Neuroscience, Biomedical Center, Uppsala University, Husargatan 3, 751 23, Uppsala, Sweden
| | - Maria Papanikolaou
- Behavioral Neurophysiology, Department of Neuroscience, Biomedical Center, Uppsala University, Husargatan 3, 751 23, Uppsala, Sweden
| | - Diana Aline Nôga
- Behavioral Neurophysiology, Department of Neuroscience, Biomedical Center, Uppsala University, Husargatan 3, 751 23, Uppsala, Sweden
| | - Marina Pádua-Reis
- Behavioral Neurophysiology, Department of Neuroscience, Biomedical Center, Uppsala University, Husargatan 3, 751 23, Uppsala, Sweden
| | | | - Martina Blunder
- Behavioral Neurophysiology, Department of Neuroscience, Biomedical Center, Uppsala University, Husargatan 3, 751 23, Uppsala, Sweden
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31
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Magham SV, Thaggikuppe Krishnamurthy P, Shaji N, Mani L, Balasubramanian S. Cannabinoid receptor 2 selective agonists and Alzheimer's disease: An insight into the therapeutic potentials. J Neurosci Res 2021; 99:2888-2905. [PMID: 34486749 DOI: 10.1002/jnr.24933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/04/2021] [Accepted: 07/14/2021] [Indexed: 12/19/2022]
Abstract
Endocannabinoid system has been extensively studied in recent decades, particularly the cannabinoid receptors CB1 and CB2, due to their important role in neuroinflammation. Among these, CB2 has gained prominence due to its selective overexpression in glial cells during neuroinflammation. In contrast to CB1 agonists, CB2 agonists have no side effects such as ataxia, hypothermia, euphoria, psychological, or addiction liabilities. CB2 and its selective agonists' above-mentioned unique properties have become a research focus in neurodegenerative disorders such as Alzheimer's disease (AD). The review discusses the neuroprotective role of CB receptors, particularly CB2, in AD, as well as the significance and limitations of this research.
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Affiliation(s)
- Sai Varshini Magham
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty, India
| | | | - Neenu Shaji
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty, India
| | - Lalithkumar Mani
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty, India
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32
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Chen L, Yang N, Li Y, Li Y, Hong J, Wang Q, Liu K, Han D, Han Y, Mi X, Shi C, Zhou Y, Li Z, Liu T, Guo X. Cholecystokinin octapeptide improves hippocampal glutamatergic synaptogenesis and postoperative cognition by inhibiting induction of A1 reactive astrocytes in aged mice. CNS Neurosci Ther 2021; 27:1374-1384. [PMID: 34402181 PMCID: PMC8504528 DOI: 10.1111/cns.13718] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/31/2021] [Accepted: 08/03/2021] [Indexed: 11/28/2022] Open
Abstract
Aims Delayed neurocognitive recovery (dNCR) is a common postoperative complication in geriatric surgical patients for which there is no efficacious therapy. Cholecystokinin octapeptide (CCK‐8), an immunomodulatory peptide, regulates memory and learning. Here, we explored the effects and mechanism of action of CCK‐8 on dNCR. Methods We applied laparotomy to establish a model of dNCR in aged mice. Morris water maze and fear conditioning tests were used to evaluate cognition. Immunofluorescence was used to detect the density of CCK‐8, A1 reactive astrocytes, glutamatergic synapses, and activation of microglia in the hippocampus. Quantitative PCR was performed to determine mRNA levels of synapse‐associated factors. A1 reactive astrocytes, activated microglia, and glutamatergic synapse‐associated protein levels in the hippocampus were assessed by western blotting. Results Administration of CCK‐8 suppressed the activation of microglia, the induction of A1 reactive astrocytes, and the expression of tumor necrosis factor alpha, complement 1q, and interleukin 1 alpha in the hippocampus. Furthermore, it promoted glutamatergic synaptogenesis and neurocognitive recovery in aged dNCR model mice. Conclusion Our findings indicated that CCK‐8 alleviated cognitive impairment and promoted glutamatergic synaptogenesis by inhibiting the induction of A1 reactive astrocytes and the activation of microglia. CCK‐8 is, therefore, a potential therapeutic target for dNCR.
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Affiliation(s)
- Lei Chen
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Yitong Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Jingshu Hong
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Qian Wang
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Kaixi Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Yongzheng Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Xinning Mi
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Chengmei Shi
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Ying Zhou
- Department of Anesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing, China
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33
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Peñaloza-Sancho V, Pérez-Valenzuela C, Gonzalez C, Jujihara G, Bustos P, Dagnino-Subiabre A. Cannabinoid receptor type 1 modulates the effects of polyunsaturated fatty acids on memory of stressed rats. Nutr Neurosci 2021; 24:583-600. [PMID: 31637966 DOI: 10.1080/1028415x.2019.1659561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Memory and GABAergic activity in the hippocampus of stressed rats improve after n-3 polyunsaturated fatty acid (PUFA) supplementation. On the other hand, cannabinoid receptor type 1 (CB1) strongly regulates inhibitory neurotransmission in the hippocampus. Speculation about a possible relation between stress, endocannabinoids, and PUFAs. Here, we examined whether the effects of PUFAs on memory of chronically stressed rats depends on pharmacological manipulation of CB1 receptors. Male Sprague-Dawley rats were orally supplemented with n-3 (fish oil) or n-6 (primrose oil) PUFAs during chronic restraint stress (CRS) protocol (6 h/day; 21 days). First, we studied if the expression of CB1 receptors in the hippocampus may be affected by CRS and PUFAs supplementation by real-time PCR and immunofluorescence. CRS up-regulated the CB1 expression compared with the non-stressed rats, while only n-3 PUFAs countered this effect. Memory was evaluated in the Morris water maze. Stressed rats were co-treated with PUFAs and/or modulators of CB1 receptor (AM251, antagonist, 0.3 mg/kg/day; WIN55,212-2, agonist, 0.5 mg/kg/day) by intraperitoneal injections. Memory improved in the stressed rats that were treated with AM251 and/or n-3 PUFAs. Supplementation with n-6 PUFAs did not affect memory of stressed rats, but co-treatment with AM251 improved it, while co-treatment with WIN55,212-2 did not affect memory. Our results demonstrate that activity of the CB1 receptors may modulate the effects of PUFAs on memory of stressed rats. This study suggests that endocannabinoids and PUFAs can both become a singular system by being self-regulated in limbic areas, so they control the effects of stress on the brain.
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Affiliation(s)
- Valentín Peñaloza-Sancho
- Laboratory of Stress Neurobiology, Institute of Physiology, Center for Neurobiology and Integrative Pathophysiology, Faculty of Sciences, Universidad de Valparaíso, Valparaíso, Chile
| | - Catherine Pérez-Valenzuela
- Laboratory of Stress Neurobiology, Institute of Physiology, Center for Neurobiology and Integrative Pathophysiology, Faculty of Sciences, Universidad de Valparaíso, Valparaíso, Chile
| | - Celindo Gonzalez
- Laboratory of Stress Neurobiology, Institute of Physiology, Center for Neurobiology and Integrative Pathophysiology, Faculty of Sciences, Universidad de Valparaíso, Valparaíso, Chile
| | - German Jujihara
- Laboratory of Stress Neurobiology, Institute of Physiology, Center for Neurobiology and Integrative Pathophysiology, Faculty of Sciences, Universidad de Valparaíso, Valparaíso, Chile
| | - Paulina Bustos
- PhD Program in Aquaculture, School of Marine Sciences, Pontifica Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Alexies Dagnino-Subiabre
- Laboratory of Stress Neurobiology, Institute of Physiology, Center for Neurobiology and Integrative Pathophysiology, Faculty of Sciences, Universidad de Valparaíso, Valparaíso, Chile
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34
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Hashiesh HM, Jha NK, Sharma C, Gupta PK, Jha SK, Patil CR, Goyal SN, Ojha SK. Pharmacological potential of JWH133, a cannabinoid type 2 receptor agonist in neurodegenerative, neurodevelopmental and neuropsychiatric diseases. Eur J Pharmacol 2021; 909:174398. [PMID: 34332924 DOI: 10.1016/j.ejphar.2021.174398] [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: 04/13/2021] [Revised: 07/15/2021] [Accepted: 07/28/2021] [Indexed: 12/09/2022]
Abstract
The pharmacological activation of cannabinoid type 2 receptors (CB2R) gained attention due to its ability to mitigate neuroinflammatory events without eliciting psychotropic actions, a limiting factor for the drugs targeting cannabinoid type 1 receptors (CB1R). Therefore, ligands activating CB2R are receiving enormous importance for therapeutic targeting in numerous neurological diseases including neurodegenerative, neuropsychiatric and neurodevelopmental disorders as well as traumatic injuries and neuropathic pain where neuroinflammation is a common accompaniment. Since the characterization of CB2R, many CB2R selective synthetic ligands have been developed with high selectivity and functional activity. Among numerous ligands, JWH133 has been found one of the compounds with high selectivity for CB2R. JWH133 has been reported to exhibit numerous pharmacological activities including antioxidant, anti-inflammatory, anticancer, cardioprotective, hepatoprotective, gastroprotective, nephroprotective, and immunomodulatory. Recent studies have shown that JWH133 possesses potent neuroprotective properties in several neurological disorders, including neuropathic pain, anxiety, epilepsy, depression, alcoholism, psychosis, stroke, and neurodegeneration. Additionally, JWH133 showed to protect neurons from oxidative damage and inflammation, promote neuronal survival and neurogenesis, and serve as an immunomodulatory agent. The present review comprehensively examined neuropharmacological activities of JWH133 in neurological disorders including neurodegenerative, neurodevelopmental and neuropsychiatric using synoptic tables and elucidated pharmacological mechanisms based on reported observations. Considering the cumulative data, JWH133 appears to be a promising CB2R agonist molecule for further evaluation and it can be a prototype agent in drug discovery and development for a unique class of agents in neurotherapeutics. Further, regulatory toxicology and pharmacokinetic studies are required to determine safety and proceed for clinical evaluation.
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Affiliation(s)
- Hebaallah Mamdouh Hashiesh
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, PO Box - 17666, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh, 201310, India
| | - Charu Sharma
- Department of Internal Medicine, College of Medicine and Health Sciences, PO Box - 17666, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Piyush Kumar Gupta
- Department of Life Science, School of Basic Sciences and Research, Sharda University, Greater Noida, 201310, Uttar Pradesh, India
| | - Saurabh Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh, 201310, India
| | - Chandragouda R Patil
- Department of Pharmacology, Delhi Pharmaceutical Sciences & Research University, Pushp Vihar, New Delhi, 110017, India
| | - Sameer N Goyal
- Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule, 424001, Maharashtra, India
| | - Shreesh K Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, PO Box - 17666, United Arab Emirates University, Al Ain, United Arab Emirates.
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He J, Liu T, Li Y, Mi X, Han D, Yang N, Chen L, Li Y, Hong J, Kuang C, Yuan Y, Cao Y, Han Y, Shi C, Li Z, Guo X. JNK inhibition alleviates delayed neurocognitive recovery after surgery by limiting microglia pyroptosis. Int Immunopharmacol 2021; 99:107962. [PMID: 34298396 DOI: 10.1016/j.intimp.2021.107962] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 06/24/2021] [Accepted: 07/04/2021] [Indexed: 10/20/2022]
Abstract
Delayed neurocognitive recovery (dNCR) is a prevalent complication after surgery in older adults. Neuroinflammation plays a pivotal role in the pathogenesis of dNCR. Recently,compelling evidence suggests that theinvolvement of microglia pyroptosis in the regulation of neuroinflammation in neurologicaldiseases. Nevertheless, the exact role of microglia pyroptosis in dNCR remains elusive. In the study, in vitro and in vivo models of dNCR were used to examine the potential effects of the mitogen‑activated protein kinase signaling pathway on Nod-like receptor protein 3 (NLRP3) inflammasome-mediated microglia pyroptosis and cognitive deficits following surgery. In vivo, we observed surgery-induced upregulation of phosphorylated (p)-c-Jun N-terminal kinases (JNK) in microglia and subsequently NLRP3 inflammasome activation, pyroptosis, and inflammatory cytokines release in mice hippocampus. Interestingly, JNK inhibitor SP600125 significantly attenuated surgery-induced cognitive impairments through inhibiting pyroptosis, inflammatory responses, and reducing immunoreactivity of NLRP3 and gasdermin D N terminus (GSDMD-N) in hippocampal microglia. In vitro, NLRP3 inflammasome- and pyroptosis-associated proteins and immunoreactivity of NLRP3, GSDMD-N, and interleukin-1β were activated in BV2 microglial cells following lipopolysaccharide (LPS) stimulation. These effects were significantly suppressed in BV2 cells by SP600125 treatment. Furthermore, treatment with NLRP3 specific inhibitor, MCC950, attenuated microglia pyroptosis induced by LPS, but did not rescue LPS-induced increased expression of p-JNK. These results indicate that the JNK pathway is largely upstream of the NLRP3 inflammasome, which exerts a crucial regulatory impact on microglia pyroptosis and inflammatory responses, thus providing a promising avenue to prevent dNCR.
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Affiliation(s)
- Jindan He
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Xinning Mi
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Lei Chen
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yitong Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Jingshu Hong
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Chongshen Kuang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yi Yuan
- Department of Anesthesiology, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Yiyun Cao
- Department of Anesthesiology, Shanghai Sixth People's Hospital East Affiliated with Shanghai University of Medicine and Health Sciences, Shanghai 200233, China
| | - Yongzheng Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Chengmei Shi
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China.
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China.
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Li C, Shi J, Sun J, Shi Y, Jia H. Cannabinoid receptor 2 deficiency enhances isoflurane-induced spatial cognitive impairment in adult mice by affecting neuroinflammation, neurogenesis and neuroplasticity. Exp Ther Med 2021; 22:908. [PMID: 34257720 PMCID: PMC8243338 DOI: 10.3892/etm.2021.10340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/21/2021] [Indexed: 12/15/2022] Open
Abstract
Isoflurane (Iso) is a commonly used inhalational anesthetic and is associated with the incidence of postoperative cognitive dysfunction (POCD). Cannabinoid receptor 2 (CB2R) was previously reported to have a promising neuroprotective function in cases of POCD, but the specific mechanisms have remained to be fully explored. The aim of the present study was to investigate the effect of CB2R deficiency on spatial cognitive performance in adult mice exposed to Iso. A total of 20 adult CB2R knockout (KO) and 20 wild-type (WT) mice were exposed to Iso (1.4% in oxygen for 4 h) or 100% oxygen. The Morris water maze (MWZ) test was performed 10 days after Iso exposure. Immunofluorescence staining and reverse transcription-quantitative PCR were performed to assess the expression of microglial marker ionized calcium-binding adaptor molecule-1 (Iba1) and the mRNA expression levels of microglial phenotype markers (M1: Interleukin-6, tumor necrosis factor-α, inducible nitric oxide synthase; M2: Chitinase-3 like protein) in the hippocampus. Changes in hippocampal neurogenesis and neuroplasticity were assessed by 5-bromodeoxyuridine (BrdU) immunostaining and Golgi staining. Compared with control mice, WT Iso-exposed mice had impaired spatial performance in the MWZ test. Furthermore, hippocampal Iba1 immunoreactivity and the number of microglial branches were notably increased in Iso-exposed WT mice. This was paralleled by significant upregulation of M1-associated markers and downregulation of M2-associated markers in the hippocampus. An obviously reduced number of BrdU+ neurons and decreased spine density were observed in WT Iso-exposed mice compared with control mice. Of note, CB2R deficiency exacerbated the spatial cognition impairment induced by Iso in the MWZ test. The alterations in the activation, morphology and M1 polarization of microglia, the number of BrdU+ neurons and spine density were more pronounced in CB2R-deficient Iso-exposed KO mice than in WT Iso-exposed mice. These results suggested that CB2R has a crucial role in Iso-induced cognitive impairment, which may be related to changes in hippocampal neuroinflammation, neurogenesis and neuroplasticity.
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Affiliation(s)
- Chao Li
- Department of Anesthesiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Jingpu Shi
- Department of Anesthesiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Jiaguang Sun
- Department of Anesthesiology, Xingtai People's Hospital, Xintai, Hebei 054001, P.R. China
| | - Yuanyuan Shi
- Department of Anesthesiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Huiqun Jia
- Department of Anesthesiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
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Chen L, Zhou Y, Wang J, Li K, Zhang Z, Peng M. The adenosine A 2A receptor alleviates postoperative delirium-like behaviors by restoring blood cerebrospinal barrier permeability in rats. J Neurochem 2021; 158:980-996. [PMID: 34033116 DOI: 10.1111/jnc.15436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 12/14/2022]
Abstract
Postoperative delirium (POD) is a common post-operative complication in elderly patients that is associated with increased morbidity and mortality. However, the neuropathogenesis of this complication remains unknown. The blood-cerebrospinal fluid barrier (BCB) and brain-blood barrier (BBB) are composed of tight junctions between cells that form physical barriers, and BBB damage plays an important role in the neuropathogenesis of POD. Nevertheless, the role of BCB in POD remains to be elucidated. Herein, we investigated the effect of adenosine A2A receptor (A2A R), a key regulator of the permeability of barriers, on surgery-induced increased permeability of BCB and POD-like behaviors. Open field, buried food, and Y maze tests were used to evaluate behavioral changes in rats after surgery. Levels of tight junction proteins, adherens junction proteins, A2A R, GTP-RhoA, and ROCK2 in the choroid plexus were assessed by western blotting. The concentrations of NaFI and FITC-dextran in the cerebrospinal fluid (CSF) were detected by fluorescence spectrophotometry. Transmission electron microscopy was applied to observe the ultrastructure of the choroid plexus. Surgery/anesthesia decreased the levels of tight junction (e.g., ZO-1, occludin, and claudin1) proteins, increased concentrations of NaFI and FITC-dextran in CSF, damaged the ultrastructure of choroid plexus, and induced POD-like behaviors in rats. An A2A R antagonist alleviated POD-like behaviors in rats. Furthermore, the A2A R antagonist increased the levels of tight junction proteins and restored the permeability of BCB in rats with POD. Fasudil, a selective Rho-associated protein kinase 2 (ROCK2) inhibitor, ameliorated POD-like behaviors induced by A2A R activation. Moreover, fasudil also abolished the increased levels of GTP-RhoA/ROCK2, decreased levels of tight junction proteins, and increased permeability of BCB caused by A2A R activation. Our findings demonstrate that A2A R might participate in regulating BCB permeability in rats with POD via the RhoA/ROCK2 signaling pathway, which suggests the potential of A2A R as a therapeutic target for POD.
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Affiliation(s)
- Lei Chen
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ying Zhou
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jiayu Wang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ke Li
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zongze Zhang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Mian Peng
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan, China
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Luo T, Lin D, Hao Y, Shi R, Wei C, Shen W, Wu A, Huang P. Ginkgolide B‑mediated therapeutic effects on perioperative neurocognitive dysfunction are associated with the inhibition of iNOS‑mediated production of NO. Mol Med Rep 2021; 24:537. [PMID: 34080648 PMCID: PMC8170229 DOI: 10.3892/mmr.2021.12176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 03/17/2021] [Indexed: 11/06/2022] Open
Abstract
Perioperative neurocognitive dysfunction (PND) is a prevalent neurological complication after anesthesia and surgery. Ginkgolide B (GB) has been suggested to improve lipopolysaccharide-induced learning and memory impairment. The present study aimed to investigate whether GB serves a protective role against PND by inhibiting inducible nitric oxide synthase (iNOS) and nitric oxide (NO). Abdominal surgery was performed on 10- to 12-week-old male C57BL/6 mice under isoflurane anesthesia. Prior to surgery, 1400W (a specific iNOS inhibitor) and GB were administered via intraperitoneal injection. Open field and fear conditioning tests were conducted to assess cognitive function on postoperative days 1 and 3. Biochemical assays were performed to evaluate alterations in NO, malondialdehyde (MDA) and superoxide dismutase (SOD) levels. Western blotting was performed to measure iNOS expression in the hippocampus on postoperative day 1. In addition, hematoxylin and eosin staining was performed to detect the neuronal morphology in the hippocampus. Following treatment with 1400W or GB, surgery-induced cognitive dysfunction was improved. Compared with the control group, the surgery group exhibited significant overproduction of iNOS and MDA in the hippocampus on postoperative day 1. Higher levels of NO were also detected in the hippocampus and prefrontal cortex of the surgery group on postoperative day 1. Furthermore, pretreatment with 1400W or GB significantly inhibited the surgery-induced elevation of NO and MDA in brain tissues. Moreover, GB pretreatment significantly inhibited surgery-induced downregulation of SOD and upregulation of iNOS. Surgery-induced increases in neuronal loss and the Bax/Bcl-2 ratio in the hippocampus were significantly inhibited by pretreatment with GB. Collectively, the results of the present study demonstrated that the therapeutic effects of GB on PND were associated with inhibition of iNOS-induced NO production, increased SOD, and the alleviation of neuronal loss and apoptosis.
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Affiliation(s)
- Ting Luo
- Department of Anesthesiology, Beijing Chao‑Yang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Dandan Lin
- Department of Anesthesiology, Beijing Chao‑Yang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Yanan Hao
- Department of Anesthesiology, Beijing Chao‑Yang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Rong Shi
- Department of Anesthesiology, Beijing Chao‑Yang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Changwei Wei
- Department of Anesthesiology, Beijing Chao‑Yang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Wenzhen Shen
- Department of Anesthesiology, Beijing Chao‑Yang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Anshi Wu
- Department of Anesthesiology, Beijing Chao‑Yang Hospital, Capital Medical University, Beijing 100020, P.R. China
| | - Peili Huang
- School of Public Health, Capital Medical University, Beijing 100069, P.R. China
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Kasatkina LA, Rittchen S, Sturm EM. Neuroprotective and Immunomodulatory Action of the Endocannabinoid System under Neuroinflammation. Int J Mol Sci 2021; 22:ijms22115431. [PMID: 34063947 PMCID: PMC8196612 DOI: 10.3390/ijms22115431] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 12/17/2022] Open
Abstract
Endocannabinoids (eCBs) are lipid-based retrograde messengers with a relatively short half-life that are produced endogenously and, upon binding to the primary cannabinoid receptors CB1/2, mediate multiple mechanisms of intercellular communication within the body. Endocannabinoid signaling is implicated in brain development, memory formation, learning, mood, anxiety, depression, feeding behavior, analgesia, and drug addiction. It is now recognized that the endocannabinoid system mediates not only neuronal communications but also governs the crosstalk between neurons, glia, and immune cells, and thus represents an important player within the neuroimmune interface. Generation of primary endocannabinoids is accompanied by the production of their congeners, the N-acylethanolamines (NAEs), which together with N-acylneurotransmitters, lipoamino acids and primary fatty acid amides comprise expanded endocannabinoid/endovanilloid signaling systems. Most of these compounds do not bind CB1/2, but signal via several other pathways involving the transient receptor potential cation channel subfamily V member 1 (TRPV1), peroxisome proliferator-activated receptor (PPAR)-α and non-cannabinoid G-protein coupled receptors (GPRs) to mediate anti-inflammatory, immunomodulatory and neuroprotective activities. In vivo generation of the cannabinoid compounds is triggered by physiological and pathological stimuli and, specifically in the brain, mediates fine regulation of synaptic strength, neuroprotection, and resolution of neuroinflammation. Here, we review the role of the endocannabinoid system in intrinsic neuroprotective mechanisms and its therapeutic potential for the treatment of neuroinflammation and associated synaptopathy.
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Affiliation(s)
- Ludmila A. Kasatkina
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (L.A.K.); (S.R.)
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Sonja Rittchen
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (L.A.K.); (S.R.)
| | - Eva M. Sturm
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (L.A.K.); (S.R.)
- Correspondence:
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40
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Shapiro L, Gado F, Manera C, Escayg A. Allosteric modulation of the cannabinoid 2 receptor confers seizure resistance in mice. Neuropharmacology 2021; 188:108448. [PMID: 33450277 DOI: 10.1016/j.neuropharm.2021.108448] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 12/18/2020] [Accepted: 12/30/2020] [Indexed: 02/07/2023]
Abstract
Mounting evidence suggests that modulation of cannabinoid 2 receptors (CB2Rs) is therapeutic in mouse models of neurological disorders, including neuropathic pain, neurodegenerative disease, and stroke. We previously showed that reducing CB2R activity increases seizure susceptibility in mice. In the present study, we evaluated the therapeutic potential of the CB2R positive allosteric modulator, Ec21a, against induced seizures in mice. The pharmacokinetic profile of Ec21 demonstrated a similar distribution in brain and plasma, with detection up to 12 h following injection. Ec21a increased resistance to induced seizures in CF1 wild-type mice and mice harboring the SCN1A R1648H human epilepsy mutation. A rotarod test provided evidence that Ec21a does not cause neurotoxicity-induced motor deficits at its therapeutic dose, and seizure protection was maintained with repeated drug administration. The selectivity of Ec21a for CB2R was supported by the ability of the CB2R antagonist AM630, but not the CB1R antagonist AM251, to block Ec21a-conferred seizure protection in mice, and a lack of significant binding of Ec21a to 34 brain-expressed receptors and transporters in vitro. These results identify allosteric modulation of CB2Rs as a promising therapeutic approach for the treatment of epilepsy.
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Affiliation(s)
- Lindsey Shapiro
- Emory University, Department of Human Genetics, Atlanta, 30322, Georgia
| | - Francesca Gado
- University of Pisa, Department of Pharmacy, Pisa, 56126, Italy
| | | | - Andrew Escayg
- Emory University, Department of Human Genetics, Atlanta, 30322, Georgia.
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Niu K, Qin JL, Lu GF, Guo J, Williams JP, An JX. Dexmedetomidine Reverses Postoperative Spatial Memory Deficit by Targeting Surf1 and Cytochrome c. Neuroscience 2021; 466:148-161. [PMID: 33895343 DOI: 10.1016/j.neuroscience.2021.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 04/11/2021] [Accepted: 04/13/2021] [Indexed: 10/21/2022]
Abstract
Anesthesia and surgery are associated with perioperative neurocognitive disorders (PND). Dexmedetomidine is known to improve PND in rats; however, little is known about the mechanisms. Male Sprague-Dawley rats were subjected to resection of the hepatic apex under propofol anesthesia to clinically mimic human abdominal surgery. The rats were divided into four groups: control group (C), anesthesia group (A), model group (M), and model + dex group (D). Cognitive function was evaluated with the Morris water maze (MWM). Neuronal morphology was observed with H&E staining, Nissl's staining and immunohistochemistry. Transcriptome analysis and quantitative real-time PCR were performed to investigate functional mitochondrial mRNA changes in the hippocampus. Protein levels were measured by Western blotting at 1, 3, and 7 days after surgery. Surgery-induced cognitive decline lasted for three days, but not seven days after surgery in the M group; however, rats in the D group were significantly improved by dexmedetomidine. No significant differences in the number of neurons were observed between the groups after surgery. Rats from the M group showed significantly greater expression levels of Iba-1 and GFAP compared with the C group and the D group. Rats in the M group demonstrated increased Surf1 and Cytochrome c expression on days 1 and 3, but not day 7; similar changes were not induced in rats in the D group. Dexmedetomidine appears to reverse surgery-induced behavior, mitigate the higher density of Iba-1 and GFAP, and downregulate the expression of Surf1 and Cytochrome c protein in the hippocampus of rats in a PND model.
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Affiliation(s)
- Kun Niu
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China; Department of Anesthesiology, Pain & Sleep Medicine, Aviation General Hospital of China Medical University & Beijing Institute of Translational Medicine, Chinese Academy of Sciences, Beijing 100012, China.
| | - Jia-Lin Qin
- Department of Anesthesiology, Pain & Sleep Medicine, Aviation General Hospital of China Medical University & Beijing Institute of Translational Medicine, Chinese Academy of Sciences, Beijing 100012, China.
| | - Guo-Fang Lu
- State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an 710032, China
| | - Jian Guo
- Department of Anesthesiology, Pain & Sleep Medicine, Aviation General Hospital of China Medical University & Beijing Institute of Translational Medicine, Chinese Academy of Sciences, Beijing 100012, China
| | - John P Williams
- Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburg 15213, PA, USA.
| | - Jian-Xiong An
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China; Department of Anesthesiology, Pain & Sleep Medicine, Aviation General Hospital of China Medical University & Beijing Institute of Translational Medicine, Chinese Academy of Sciences, Beijing 100012, China; School of Medical Science & Engineering, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China.
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42
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Van Hove L, Kim KR, Arrick DM, Mayhan WG. A cannabinoid type 2 (CB2) receptor agonist augments NOS-dependent responses of cerebral arterioles during type 1 diabetes. Microvasc Res 2021; 133:104077. [PMID: 32979391 PMCID: PMC7704564 DOI: 10.1016/j.mvr.2020.104077] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/14/2020] [Accepted: 09/19/2020] [Indexed: 11/19/2022]
Abstract
While activation of cannabinoid (CB2) receptors has been shown to be neuroprotective, no studies have examined whether this neuroprotection is directed at cerebral arterioles and no studies have examined whether activation of CB2 receptors can rescue cerebrovascular dysfunction during a chronic disease state such as type 1 diabetes (T1D). Our goal was to test the hypothesis that administration of a CB2 agonist (JWH-133) would improve impaired endothelial (eNOS)- and neuronal (nNOS)-dependent dilation of cerebral arterioles during T1D. In vivo diameter of cerebral arterioles in nondiabetic and T1D rats was measured in response to an eNOS-dependent agonist (adenosine 5'-diphosphate; ADP), an nNOS-dependent agonist (N-methyl-d-aspartate; NMDA), and an NOS-independent agonist (nitroglycerin) before and 1 h following JWH-133 (1 mg/kg IP). Dilation of cerebral arterioles to ADP and NMDA was greater in nondiabetic than in T1D rats. Treatment with JWH-133 increased responses of cerebral arterioles to ADP and NMDA in both nondiabetic and T1D rats. Responses of cerebral arterioles to nitroglycerin were similar between nondiabetic and T1D rats, and JWH-133 did not influence responses to nitroglycerin in either group. The restoration in responses to the agonists by JWH-133 could be inhibited by treatment with a specific inhibitor of CB2 receptors (AM-630; 3 mg/kg IP). Thus, activation of CB2 receptors can potentiate reactivity of cerebral arterioles during physiologic and pathophysiologic states. We speculate that treatment with CB2 receptor agonists may have potential therapeutic benefits for the treatment of cerebral vascular diseases via a mechanism that can increase cerebral blood flow.
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MESH Headings
- Animals
- Arterioles/drug effects
- Arterioles/enzymology
- Brain/blood supply
- Cannabinoid Receptor Agonists/pharmacology
- Cannabinoids/pharmacology
- Cerebrovascular Disorders/enzymology
- Cerebrovascular Disorders/physiopathology
- Cerebrovascular Disorders/prevention & control
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/enzymology
- Diabetes Mellitus, Experimental/physiopathology
- Diabetes Mellitus, Type 1/drug therapy
- Diabetes Mellitus, Type 1/enzymology
- Diabetes Mellitus, Type 1/physiopathology
- Male
- Nitric Oxide Synthase Type I/metabolism
- Nitric Oxide Synthase Type III/metabolism
- Rats, Sprague-Dawley
- Receptor, Cannabinoid, CB2/agonists
- Receptor, Cannabinoid, CB2/metabolism
- Signal Transduction
- Vasodilation/drug effects
- Vasodilator Agents/pharmacology
- Rats
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Affiliation(s)
- Lauren Van Hove
- Division of Basic Biomedical Sciences, Sanford School of Medicine, The University of South Dakota, Vermillion, SD 57069, United States of America
| | - Kirsten R Kim
- Division of Basic Biomedical Sciences, Sanford School of Medicine, The University of South Dakota, Vermillion, SD 57069, United States of America
| | - Denise M Arrick
- Division of Basic Biomedical Sciences, Sanford School of Medicine, The University of South Dakota, Vermillion, SD 57069, United States of America
| | - William G Mayhan
- Division of Basic Biomedical Sciences, Sanford School of Medicine, The University of South Dakota, Vermillion, SD 57069, United States of America.
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Komorowska-Müller JA, Schmöle AC. CB2 Receptor in Microglia: The Guardian of Self-Control. Int J Mol Sci 2020; 22:E19. [PMID: 33375006 PMCID: PMC7792761 DOI: 10.3390/ijms22010019] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/16/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022] Open
Abstract
Microglia are key to maintaining the homeostasis of the brain. These immune cells of the brain can be our biggest ally in fighting infections, but can worsen pathology or hinder recovery when uncontrolled. Thus, understanding how microglia contribute to neuroinflammatory processes and how their activity can be controlled is of great importance. It is known that activation of endocannabinoid system, and especially the cannabinoid type 2 receptor (CB2R), decreases inflammation. Alongside its non-psychoactive effect, it makes the CB2R receptor a perfect target for treating diseases accompanied by neuroinflammation including neurodegenerative diseases. However, the exact mechanisms by which CB2R regulates microglial activity are not yet understood. Here, we review the current knowledge on the roles of microglial CB2R from in vitro and in vivo studies. We look into CB2R function under physiological and pathological conditions and focus on four different disease models representing chronic and acute inflammation. We highlight open questions and controversies and provide an update on the latest discoveries that were enabled by the development of novel technologies. Also, we discuss the recent findings on the role of microglia CB2R in cognition and its role in neuron-microglia communication.
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Affiliation(s)
- Joanna Agnieszka Komorowska-Müller
- Institute for Molecular Psychiatry, Medical Faculty, University of Bonn, Venusberg-Campus 1, 53127 Bonn, Germany;
- International Max Planck Research School for Brain and Behavior, University of Bonn, 53175 Bonn, Germany
| | - Anne-Caroline Schmöle
- Institute for Molecular Psychiatry, Medical Faculty, University of Bonn, Venusberg-Campus 1, 53127 Bonn, Germany;
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Zhang J, Zhu S, Jin P, Huang Y, Dai Q, Zhu Q, Wei P, Yang Z, Zhang L, Liu H, Xu G, Chen L, Gu E, Zhang Y, Wen L, Liu X. Graphene oxide improves postoperative cognitive dysfunction by maximally alleviating amyloid beta burden in mice. Theranostics 2020; 10:11908-11920. [PMID: 33204319 PMCID: PMC7667672 DOI: 10.7150/thno.50616] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/16/2020] [Indexed: 12/21/2022] Open
Abstract
Rationale: Graphene oxide (GO) based nanomaterials have shown potential for the diagnosis and treatment of amyloid-β (Aβ)-related diseases, mainly on Alzheimer's disease (AD). However, these nanomaterials have limitations. How GO is beneficial to eliminate Aβ burden, and its physiological function in Aβ-related diseases, still needs to be investigated. Moreover, postoperative cognitive dysfunction (POCD) is an Aβ-related common central nervous system complication, however, nanomedicine treatment is lacking. Methods: To evaluate the effects of GO on Aβ levels, HEK293T-APP-GFP and SHSY5Y-APP-GFP cells are established. Intramedullary fixation surgery for tibial fractures under inhalation anesthesia is used to induce dysfunction of fear memory in mice. The fear memory of mice is assessed by fear conditioning test. Results: GO treatment maximally alleviated Aβ levels by simultaneously reducing Aβ generation and enhancing its degradation through inhibiting β-cleavage of amyloid precursor protein (APP) and improving endosomal Aβ delivery to lysosomes, respectively. In postoperative mice, the hippocampal Aβ levels were significantly increased and hippocampal-dependent fear memory was impaired. However, GO administration significantly reduced hippocampal Aβ levels and improved the cognitive function of the postoperative mice. Conclusion: GO improves fear memory of postoperative mice by maximally alleviating Aβ accumulation, providing new evidence for the application of GO-based nanomedicines in Aβ-related diseases.
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Perioperative neurocognitive dysfunction: thinking from the gut? Aging (Albany NY) 2020; 12:15797-15817. [PMID: 32805716 PMCID: PMC7467368 DOI: 10.18632/aging.103738] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022]
Abstract
With the aging of the world population, and improvements in medical and health technologies, there are increasing numbers of elderly patients undergoing anaesthesia and surgery. Perioperative neurocognitive dysfunction has gradually attracted increasing attention from academics. Very recently, 6 well-known journals jointly recommended that the term perioperative neurocognitive dysfunction (defined according to the Diagnostic and Statistical Manual of Mental Disorders, fifth edition) should be adopted to improve the quality and consistency of academic communications. Perioperative neurocognitive dysfunction currently includes preoperatively diagnosed cognitive decline, postoperative delirium, delayed neurocognitive recovery, and postoperative cognitive dysfunction. Increasing evidence shows that the gut microbiota plays a pivotal role in neuropsychiatric diseases, and in central nervous system functions via the microbiota-gut-brain axis. We recently reported that abnormalities in the composition of the gut microbiota might underlie the mechanisms of postoperative cognitive dysfunction and postoperative delirium, suggesting a critical role for the gut microbiota in perioperative neurocognitive dysfunction. This article therefore reviewed recent findings on the linkage between the gut microbiota and the underlying mechanisms of perioperative neurocognitive dysfunction.
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Niu W, Ma L, Tao T, Tian F, He T, Qiao M, He H, Liu X, Zhao X. Surgery-induced cognitive dysfunction is alleviated through triggering receptor expressed on myeloid cells 2. Acta Histochem 2020; 122:151553. [PMID: 32381365 DOI: 10.1016/j.acthis.2020.151553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 04/19/2020] [Accepted: 04/20/2020] [Indexed: 01/22/2023]
Abstract
Neuroinflammation plays a key role in perioperative neurocognitive disorders (PND). Increased evidences indicate that triggering receptor expressed on myeloid cells 2 (TREM2) can mitigate inflammatory response in the brain, and the aim of this study is to investigate whether TREM2 is involved in surgery-induced cognitive dysfunction in adult mice. We used adult C57BL/6 mice subjected to intramedullary fixation surgery, and found that surgery did not impair the motor ability of mice, but worsened the learning and memory function, and reduced the expression of TREM2. Meanwhile, up-regulated TREM2 expression in the brain of mice, induced by selective TREM2 agonist HSP60, significantly improved the learning and memory, alleviated the neuroinflammation, and decreased the neuronal cell apoptosis in mice. Meanwhile, TREM2-siRNA abolished the increased expression of TREM2 induced by HSP60, and reversed all the HSP60-induced beneficial effects. Therefore, our study indicated that up-regulation of TREM2 alleviated neuroinflammation and improved learning and memory function after surgery in mice.
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Affiliation(s)
- Wen Niu
- Department of Pathophysiology, Institute of Basic Medical Science, PLA General Hospital, Beijing, 100853, China; Department of Physiology and Pathophysiology, The Fourth Military Medical University, Xi'an, 710032, China
| | - Lei Ma
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Tianqi Tao
- Department of Pathophysiology, Institute of Basic Medical Science, PLA General Hospital, Beijing, 100853, China
| | - Fangfang Tian
- Department of Anesthesiology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, 710038, China
| | - Tao He
- Department of Pathophysiology, Institute of Basic Medical Science, PLA General Hospital, Beijing, 100853, China
| | - Min Qiao
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Haimeng He
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Xiuhua Liu
- Department of Pathophysiology, Institute of Basic Medical Science, PLA General Hospital, Beijing, 100853, China.
| | - Xiayong Zhao
- Department of Physiology and Pathophysiology, The Fourth Military Medical University, Xi'an, 710032, China; Department of Anesthesiology, Ankang Central Hospital, Ankang, 725000, China.
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Stasiulewicz A, Znajdek K, Grudzień M, Pawiński T, Sulkowska JI. A Guide to Targeting the Endocannabinoid System in Drug Design. Int J Mol Sci 2020; 21:ijms21082778. [PMID: 32316328 PMCID: PMC7216112 DOI: 10.3390/ijms21082778] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/07/2020] [Accepted: 04/14/2020] [Indexed: 12/11/2022] Open
Abstract
The endocannabinoid system (ECS) is one of the most crucial systems in the human organism, exhibiting multi-purpose regulatory character. It is engaged in a vast array of physiological processes, including nociception, mood regulation, cognitive functions, neurogenesis and neuroprotection, appetite, lipid metabolism, as well as cell growth and proliferation. Thus, ECS proteins, including cannabinoid receptors and their endogenous ligands’ synthesizing and degrading enzymes, are promising therapeutic targets. Their modulation has been employed in or extensively studied as a treatment of multiple diseases. However, due to a complex nature of ECS and its crosstalk with other biological systems, the development of novel drugs turned out to be a challenging task. In this review, we summarize potential therapeutic applications for ECS-targeting drugs, especially focusing on promising synthetic compounds and preclinical studies. We put emphasis on modulation of specific proteins of ECS in different pathophysiological areas. In addition, we stress possible difficulties and risks and highlight proposed solutions. By presenting this review, we point out information pivotal in the spotlight of ECS-targeting drug design, as well as provide an overview of the current state of knowledge on ECS-related pharmacodynamics and show possible directions for needed research.
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Affiliation(s)
- Adam Stasiulewicz
- Department of Drug Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (M.G.); (T.P.)
- Interdisciplinary Laboratory of Biological Systems Modelling, Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland;
- Correspondence: (A.S.); (J.I.S.)
| | - Katarzyna Znajdek
- Interdisciplinary Laboratory of Biological Systems Modelling, Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland;
- Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland
| | - Monika Grudzień
- Department of Drug Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (M.G.); (T.P.)
| | - Tomasz Pawiński
- Department of Drug Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland; (M.G.); (T.P.)
| | - Joanna I. Sulkowska
- Interdisciplinary Laboratory of Biological Systems Modelling, Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland;
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, CA 91125, USA
- Correspondence: (A.S.); (J.I.S.)
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García S, Martín Giménez VM, Mocayar Marón FJ, Reiter RJ, Manucha W. Melatonin and cannabinoids: mitochondrial-targeted molecules that may reduce inflammaging in neurodegenerative diseases. Histol Histopathol 2020; 35:789-800. [PMID: 32154907 DOI: 10.14670/hh-18-212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Generally, the development and progression of neurodegenerative diseases are associated with advancing age, so they are usually diagnosed in late adulthood. A primary mechanism underlying the onset of neurodegenerative diseases is neuroinflammation. Based on this background, the concept of "neuroinflammaging" has emerged. In this deregulated neuroinflammatory process, a variety of immune cells participate, especially glial cells, proinflammatory cytokines, receptors, and subcellular organelles including mitochondria, which are mainly responsible for maintaining redox balance at the cellular level. Senescence and autophagic processes also play a crucial role in the neuroinflammatory disease associated with aging. Of particular interest, melatonin, cannabinoids, and the receptors of both molecules which are closely related, exert beneficial effects on the neuroinflammatory processes that precede the onset of neurodegenerative pathologies such as Parkinson's and Alzheimer's diseases. Some of these neuroprotective effects are fundamentally related to its anti-inflammatory and antioxidative actions at the mitochondrial level due to the strategic functions of this organelle. The aim of this review is to summarize the most recent advances in the study of neuroinflammation and neurodegeneration associated with age and to consider the use of new mitochondrial therapeutic targets related to the endocannabinoid system and the pineal gland.
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Affiliation(s)
- Sebastián García
- Institute of Pharmacology, Department of Pathology, School of Medical Sciences, Cuyo National University, Mendoza, Argentina.,Institute of Medicine and Experimental Biology of Cuyo (IMBECU), National Council of Scientific and Technological Research (CONICET), Mendoza, Argentina
| | - Virna Margarita Martín Giménez
- Institute of Research in Chemical Sciences, School of Chemical and Technological Sciences, Cuyo Catholic University, San Juan, Argentina
| | - Feres José Mocayar Marón
- Institute of Pharmacology, Department of Pathology, School of Medical Sciences, Cuyo National University, Mendoza, Argentina.,Institute of Medicine and Experimental Biology of Cuyo (IMBECU), National Council of Scientific and Technological Research (CONICET), Mendoza, Argentina
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science at San Antonio, San Antonio, TX, USA
| | - Walter Manucha
- Institute of Medicine and Experimental Biology of Cuyo (IMBECU), National Council of Scientific and Technological Research (CONICET), Mendoza, Argentina.,Institute of Pharmacology, Department of Pathology, School of Medical Sciences, Cuyo National University, Mendoza, Argentina.
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Ren YZ, Zhang BZ, Zhao XJ, Zhang ZY. Resolvin D1 ameliorates cognitive impairment following traumatic brain injury via protecting astrocytic mitochondria. J Neurochem 2020; 154:530-546. [PMID: 31951012 DOI: 10.1111/jnc.14962] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 12/29/2019] [Accepted: 01/02/2020] [Indexed: 12/18/2022]
Abstract
Cognitive impairment is one of the most common and devastating neuropsychiatric sequelae after traumatic brain injury (TBI), and hippocampal neuronal survival plays a causal role in this pathological process. Resolvin D1 (RvD1), an important endogenous specialized pro-resolving mediator, has recently been reported to exert a potent protective effect on mitochondria. This suggests that RvD1 may suppress neuroinflammation and protect astrocytic mitochondria at the same time to play further neuroprotective roles. C57BL/6 mice subjected to TBI using a controlled cortical impact device were used for in vivo experiments. Cultured primary mouse astrocytes and an N2a mouse neuroblastoma cell line were used for in vitro experiments. In TBI mice, RvD1 significantly ameliorated cognitive impairment, suppressed gliosis and alleviated neuronal loss in the hippocampus. To explore the mechanism underlying this activity, we verified that RvD1 can induce a higher level of mitophagy to remove damaged mitochondria and eliminate extra mitochondria-derived reactive oxygen species (mitoROS) by activating ALX4/FPR2 receptors in astrocytes. In an in vitro model, we further confirmed that RvD1 can protect mitochondrial morphology and membrane potential in astrocytes and thereby enhance the survival of neurons. Meanwhile, RvD1 was also shown to increase the expression of brain-derived neurotrophic factor and glutamate aspartate transporter in the hippocampus following TBI, which indicates a possible way by which RvD1 increases the supportive function of astrocytes. These findings suggest that RvD1 may be a potent therapeutic option for ameliorating cognitive impairment following TBI by controlling neuroinflammation and protecting astrocytic mitochondria.
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Affiliation(s)
- Yi-Zhi Ren
- Department of Pathology, Nanjing Medical University, Nanjing, China
| | - Ben-Zheng Zhang
- Department of Pathology, Nanjing Medical University, Nanjing, China
| | - Xiao-Jing Zhao
- Department of Pathology, Nanjing Medical University, Nanjing, China
| | - Zhi-Yuan Zhang
- Department of Pathology, Nanjing Medical University, Nanjing, China.,The Key Laboratory of Antibody Technique of the Ministry of Health, Nanjing Medical University, Nanjing, China.,Department of Neurology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, China
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Çakır M, Tekin S, Okan A, Çakan P, Doğanyiğit Z. The ameliorating effect of cannabinoid type 2 receptor activation on brain, lung, liver and heart damage in cecal ligation and puncture-induced sepsis model in rats. Int Immunopharmacol 2020; 78:105978. [DOI: 10.1016/j.intimp.2019.105978] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/10/2019] [Accepted: 10/13/2019] [Indexed: 12/15/2022]
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