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Liu X, Song Y, Hu S, Bai Y, Zhang J, Tai G, Shao C, Pan Y. Serum amyloid A contributes to radiation-induced lung injury by activating macrophages through FPR2/Rac1/NF-κB pathway. Int J Biol Sci 2024; 20:4941-4956. [PMID: 39309438 PMCID: PMC11414394 DOI: 10.7150/ijbs.100823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Accepted: 09/03/2024] [Indexed: 09/25/2024] Open
Abstract
Patients who receive thoracic radiotherapy may suffer from radiation-induced lung injury, but the treatment options are limited as the underlying mechanisms are unclear. Using a mouse model of right thorax irradiation with fractionated doses of X-rays for three consecutive days (8 Gy/per day), this study found that the thoracic irradiation (Th-IR) induced tissue injury with aberrant infiltration of macrophages, and it significantly increased the secretion of TNF-α, IL-1β, IL-6, TGF-β1 and serum amyloid A (SAA) in mice. Interestingly, SAA could activate macrophages and then induce epithelial-mesenchymal transition (EMT) of lung epithelial cells and fibrosis progression in lung tissue. Mechanistically, SAA enhanced the transient binding of FPR2 to Rac1 protein and further activated NF-κB signaling pathway in macrophages. Inhibition of FPR2 significantly reduced pulmonary fibrosis induced by SAA administration in mice. In addition, cimetidine could reduce the level of SAA release after irradiation and attenuate the lung injury induced by SAA or Th-IR. In conclusion, our results demonstrated that SAA activated macrophages via FPR2/Rac1/NF-κB pathway and might contribute to the Th-IR induced lung injury, which may provide a new strategy to attenuate radiation-induced adverse effects during radiotherapy.
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Affiliation(s)
- Xinglong Liu
- Institute of Radiation Medicine, Shanghai Medical College, Fudan University, Shanghai 200032, China
- Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai 200032, China
| | - Yimeng Song
- Institute of Radiation Medicine, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Songling Hu
- Department of Preventive Dentistry, Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital & School of Stomatology, Shanghai Medical College, Fudan University, Shanghai 200001, China
| | - Yang Bai
- Institute of Radiation Medicine, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Jianghong Zhang
- Institute of Radiation Medicine, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Guomei Tai
- Department of Radiotherapy, Nantong Tumor Hospital and the Affiliated Tumor Hospital of Nantong University, Nantong 226631, Jiangsu Province, China
| | - Chunlin Shao
- Institute of Radiation Medicine, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yan Pan
- Institute of Radiation Medicine, Shanghai Medical College, Fudan University, Shanghai 200032, China
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Dong S, Chen C, Di C, Wang S, Dong Q, Lin W, Liu D. The Association between NADPH Oxidase 2 (NOX2) and Drug Resistance in Cancer. Curr Cancer Drug Targets 2024; 24:1195-1212. [PMID: 38362697 DOI: 10.2174/0115680096277328240110062433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 12/15/2023] [Accepted: 12/26/2023] [Indexed: 02/17/2024]
Abstract
NADPH oxidase, as a major source of intracellular reactive oxygen species (ROS), assumes an important role in the immune response and oxidative stress response of the body. NADPH oxidase 2 (NOX2) is the first and most representative member of the NADPH oxidase family, and its effects on the development of tumor cells are gaining more and more attention. Our previous study suggested that NCF4 polymorphism in p40phox, a key subunit of NOX2, affected the outcome of diffuse large B-cell lymphoma patients treated with rituximab. It hypothesized that NOX2-mediated ROS could enhance the cytotoxic effects of some anti-tumor drugs in favor of patients with tumors. Several reviews have summarized the role of NOX2 and its congeners-mediated ROS in anti-tumor therapy, but few studies focused on the relationship between the expression of NOX2 and anti-tumor drug resistance. In this article, we systematically introduced the NOX family, represented by NOX2, and a classification of the latest inhibitors and agonists of NOX2. It will help researchers to have a more rational and objective understanding of the dual role of NOX2 in tumor drug resistance and is expected to provide new ideas for oncology treatment and overcoming drug resistance in cancer.
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Affiliation(s)
- Shiqi Dong
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Chao Chen
- Department of laboratory, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Chang Di
- Department of Radiation Oncology, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Shufan Wang
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Quan Dong
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Wenxin Lin
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, 150086, China
| | - Duo Liu
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, 150086, China
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Wu MY, Ge YJ, Wang EJ, Liao QW, Ren ZY, Yu Y, Zhu G, Liu CP, Zhang MN, Su H, Shen HM, Chen Y, Wang L, Wang YT, Li M, Bian Z, Chai J, Ye RD, Lu JH. Enhancement of efferocytosis through biased FPR2 signaling attenuates intestinal inflammation. EMBO Mol Med 2023; 15:e17815. [PMID: 37994307 DOI: 10.15252/emmm.202317815] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 10/20/2023] [Accepted: 10/24/2023] [Indexed: 11/24/2023] Open
Abstract
Efficient clearance of dying cells (efferocytosis) is an evolutionarily conserved process for tissue homeostasis. Genetic enhancement of efferocytosis exhibits therapeutic potential for inflammation resolution and tissue repair. However, pharmacological approaches to enhance efferocytosis remain sparse due to a lack of targets for modulation. Here, we report the identification of columbamine (COL) which enhances macrophage-mediated efferocytosis and attenuates intestinal inflammation in a murine colitis model. COL enhances efferocytosis by promoting LC3-associated phagocytosis (LAP), a non-canonical form of autophagy. Transcriptome analysis and pharmacological characterization revealed that COL is a biased agonist that occupies a part of the ligand binding pocket of formyl peptide receptor 2 (FPR2), a G-protein coupled receptor involved in inflammation regulation. Genetic ablation of the Fpr2 gene or treatment with an FPR2 antagonist abolishes COL-induced efferocytosis, anti-colitis activity and LAP. Taken together, our study identifies FPR2 as a potential target for modulating LC3-associated efferocytosis to alleviate intestinal inflammation and highlights the therapeutic value of COL, a natural and biased agonist of FPR2, in the treatment of inflammatory bowel disease.
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Affiliation(s)
- Ming-Yue Wu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
- Department of Gastroenterology, The First Affiliated Hospital (Southwest Hospital), Third Military Medical University (Army Medical University), Chongqing, China
| | - Yun-Jun Ge
- Kobilka Institute of Innovative Drug Discovery, School of Medicine, The Chinese University of Hong Kong, Shenzhen, China
- Department of Basic Medical Science, Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Er-Jin Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
| | - Qi-Wen Liao
- Kobilka Institute of Innovative Drug Discovery, School of Medicine, The Chinese University of Hong Kong, Shenzhen, China
| | - Zheng-Yu Ren
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
| | - Yang Yu
- Engineering Research Center of Cell and Therapeutic Antibody Medicine, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Guoyuan Zhu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau SAR, China
| | - Chun-Ping Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, University of Macau, Macau SAR, China
| | - Meng-Ni Zhang
- Department of Gastroenterology, The First Affiliated Hospital (Southwest Hospital), Third Military Medical University (Army Medical University), Chongqing, China
| | - Huanxing Su
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
| | - Han-Ming Shen
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Ye Chen
- Integrative Microecology Center, Department of Gastroenterology, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangzhou, China
| | - Lei Wang
- Department of Cardiovascular Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yi-Tao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
| | - Min Li
- School of Chinese Medicine, Hong Kong Baptist University, Hongkong SAR, China
| | - Zhaoxiang Bian
- School of Chinese Medicine, Hong Kong Baptist University, Hongkong SAR, China
| | - Jin Chai
- Department of Gastroenterology, The First Affiliated Hospital (Southwest Hospital), Third Military Medical University (Army Medical University), Chongqing, China
| | - Richard D Ye
- Kobilka Institute of Innovative Drug Discovery, School of Medicine, The Chinese University of Hong Kong, Shenzhen, China
- The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen, China
| | - Jia-Hong Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China
- Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, University of Macau, Macau SAR, China
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Xie Y, Yang Y, Yuan T. Brain Damage in the Preterm Infant: Clinical Aspects and Recent Progress in the Prevention and Treatment. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2023; 22:27-40. [PMID: 35209835 DOI: 10.2174/1871527321666220223092905] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/16/2022] [Accepted: 01/16/2022] [Indexed: 12/16/2022]
Abstract
Although the prevalence of brain injury and related neurodevelopmental disabilities resulting from preterm birth are major public health concerns, there are no definite neuroprotective strategies to prevent or reduce brain injury. The pattern of brain injury seen in preterm infants has evolved into more subtle lesions that are still essential to diagnose regarding neurodevelopmental outcomes. There is no specific effective method for the treatment of premature infant brain injury, and the focus of clinical treatment is still on prevention. Prevention of this injury requires insight into the pathogenesis, but many gaps exist in our understanding of how neonatal treatment procedures and medications impact cerebral hemodynamics and preterm brain injury. Many studies provide evidence about the prevention of premature infant brain injury, which is related to some drugs (such as erythropoietin, melatonin, mesenchymal stem cells, etc.). However, there are still some controversies about the quality of research and the effectiveness of therapy. This review aims to recapitulate the results of preclinical studies and provide an update on the latest developments around etiological pathways, prevention, and treatment.
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Affiliation(s)
- Yixuan Xie
- Department of Neonatology, Children\'s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, Zhejiang, P.R. China
| | - Yue Yang
- Department of Neonatology, Children\'s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, Zhejiang, P.R. China
| | - Tianming Yuan
- Department of Neonatology, Children\'s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, Zhejiang, P.R. China
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Huang K, Wang Z, He Z, Li Y, Li S, Shen K, Zhu G, Liu Z, Lv S, Zhang C, Yang H, Yang X, Liu S. Downregulated formyl peptide receptor 2 expression in the epileptogenic foci of patients with focal cortical dysplasia type IIb and tuberous sclerosis complex. Immun Inflamm Dis 2022; 10:e706. [PMID: 36301030 PMCID: PMC9597500 DOI: 10.1002/iid3.706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 08/30/2022] [Accepted: 09/01/2022] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Focal cortical dysplasia type IIb (FCDIIb) and tuberous sclerosis complex (TSC) show persistent neuroinflammation, which promotes epileptogenesis and epilepsy progression, suggesting that endogenous resolution of inflammation is inadequate to relieve neuronal network hyperexcitability. To explore the potential roles of formyl peptide receptor 2 (FPR2), which is a key regulator of inflammation resolution, in epilepsy caused by FCDIIb and TSC, we examined the expression and cellular distribution of FPR2. METHOD The expression of FPR2 and nuclear factor-κB (NF-κB) signaling pathway was examined by real-time PCR, western blots, and analyzed via one-way analysis of variance. The distribution of FPR2 was detected using immunostaining. The expression of resolvin D1 (RvD1, the endogenous ligand of FPR2) was observed via enzyme-linked immunosorbent assay. Pearson's correlation test was used to evaluate the correlation between the expression levels of FPR2 and RvD1 and the clinical variants. RESULTS The expression of FPR2 was significantly lower in FCDIIb (p = .0146) and TSC (p = .0006) cortical lesions than in controls, as was the expression of RvD1 (FCDIIb: p = .00431; TSC: p = .0439). Weak FPR2 immunoreactivity was observed in dysmorphic neurons (DNs), balloon cells (BCs), and giant cells (GCs) in FCDIIb and TSC tissues. Moreover, FPR2 was mainly distributed in dysplastic neurons; it was sparse in microglia and nearly absent in astrocytes. The NF-κB pathway was significantly activated in patients with FCDIIb and TSC, and the protein level of NF-κB was negatively correlated with the protein level of FPR2 (FCDIIb: p = .00395; TSC: p = .0399). In addition, the protein level of FPR2 was negatively correlated with seizure frequency in FCDIIb (p = .0434) and TSC (p = .0351) patients. CONCLUSION In summary, these results showed that the expression and specific distribution of FPR2 may be involved in epilepsy caused by FCDIIb and TSC, indicating that downregulation of FPR2 mediated the dysfunction of neuroinflammation resolution in FCDIIb and TSC.
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Affiliation(s)
- Kaixuan Huang
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Zhongke Wang
- Department of NeurosurgeryArmed Police Hospital of ChongqingChongqingChina
| | - Zeng He
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Yang Li
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Shujing Li
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Kaifeng Shen
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Gang Zhu
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Zhonghong Liu
- Department of NeurosurgeryArmed Police Hospital of ChongqingChongqingChina
| | - Shengqing Lv
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Chunqing Zhang
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Hui Yang
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Xiaolin Yang
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
| | - Shiyong Liu
- Department of Neurosurgery, Epilepsy Research Center of PLA, Xinqiao HospitalArmy Medical University (Third Military Medical University)ChongqingChina
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Roohbakhsh A, Etemad L, Karimi G. Resolvin D1: A key endogenous inhibitor of neuroinflammation. Biofactors 2022; 48:1005-1026. [PMID: 36176016 DOI: 10.1002/biof.1891] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 08/08/2022] [Indexed: 12/14/2022]
Abstract
After the initiation of inflammation, a series of processes start to resolve the inflammation. A group of endogenous lipid mediators, namely specialized pro-resolving lipid mediators is at the top list of inflammation resolution. Resolvin D1 (RvD1), is one of the lipid mediators with significant anti-inflammatory properties. It is produced from docosahexaenoic acid (omega-3 polyunsaturated fatty acid) in the body. In this article, we aimed to review the most recent findings concerning the pharmacological effects of RvD1 in the central nervous system with a focus on major neurological diseases and dysfunctions. A literature review of the past studies demonstrated that RvD1 plasma level changes during mania, depression, and Parkinson's disease. Furthermore, RVD1 and its epimer, aspirin-triggered RvD1 (AT-RvD1), have significant therapeutic effects on experimental models of ischemic and traumatic brain injuries, memory dysfunction, pain, depression, amyotrophic lateral sclerosis, and Alzheimer's and Parkinson's diseases. Interestingly, the beneficial effects of RvD1 and AT-RvD1 were mostly induced at nanomolar and micromolar concentrations implying the significant potency of these lipid mediators in treating diseases with inflammation.
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Affiliation(s)
- Ali Roohbakhsh
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Etemad
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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7
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Resolvin D1 Improves Post-Resuscitation Cardiac and Cerebral Outcomes in A Porcine Model of Cardiac Arrest. Shock 2021; 54:548-554. [PMID: 32080063 DOI: 10.1097/shk.0000000000001528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Following global ischemia reperfusion injury triggered by cardiac arrest (CA) and resuscitation, the ensuing cardiac and cerebral damage would result in high mortality and morbidity. Recently, resolvin D1 has been proven to have a protective effect on regional cardiac and cerebral ischemia reperfusion injury. In this study, we investigated the effects of resolvin D1 on cardiac and cerebral outcomes after cardiopulmonary resuscitation (CPR) in a porcine model.Twenty-eight male domestic pigs weighing between 33 and 41 kg were randomly divided into one of the four groups: sham, CPR, low-dose resolvin D1 (LRD), and high-dose resolvin D1 (HRD). Sham animals underwent the surgical preparation only. Other animals were subjected to 8 min of untreated ventricular fibrillation and then 5 min of CPR. At 5 min after resuscitation, resolvin D1 was intravenously administered with the doses of 0.3 and 0.6 μg/kg in the LRD and HRD groups, respectively. The resuscitated animals were monitored for 6 h and observed for an additional 18 h.After resuscitation, myocardial and neurological function were significantly impaired, and their serum levels of injury biomarkers were markedly increased in the CPR, LRD, and HRD groups compared with the sham group. In addition, tissue inflammation and oxidative stress in the heart and brain were observed in the three groups. However, myocardial function was significantly improved and its injury biomarker was significantly decreased starting 3 h after resuscitation in the LRD and HRD groups compared with the CPR group. Similarly, neurological function was significantly better at 24 h post-resuscitation and its injury biomarkers were significantly lower at 6 and 24 h post-resuscitation in the LRD and HRD groups than in the CPR group. In addition, myocardial, cerebral inflammation, and oxidative stress were significantly milder in the two resolvin D1-treated groups. Especially, HRD produced significantly greater post-resuscitation cardiac and cerebral protection compared with the LRD group.In conclusion, resolvin D1 significantly improved post-resuscitation cardiac and cerebral outcomes in a porcine model of CA, in which the protective effects may be in a dose-dependent manner.
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Phillips-Farfán B, Gómez-Chávez F, Medina-Torres EA, Vargas-Villavicencio JA, Carvajal-Aguilera K, Camacho L. Microbiota Signals during the Neonatal Period Forge Life-Long Immune Responses. Int J Mol Sci 2021; 22:ijms22158162. [PMID: 34360926 PMCID: PMC8348731 DOI: 10.3390/ijms22158162] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 12/27/2022] Open
Abstract
The microbiota regulates immunological development during early human life, with long-term effects on health and disease. Microbial products include short-chain fatty acids (SCFAs), formyl peptides (FPs), polysaccharide A (PSA), polyamines (PAs), sphingolipids (SLPs) and aryl hydrocarbon receptor (AhR) ligands. Anti-inflammatory SCFAs are produced by Actinobacteria, Bacteroidetes, Firmicutes, Spirochaetes and Verrucomicrobia by undigested-carbohydrate fermentation. Thus, fiber amount and type determine their occurrence. FPs bind receptors from the pattern recognition family, those from commensal bacteria induce a different response than those from pathogens. PSA is a capsular polysaccharide from B. fragilis stimulating immunoregulatory protein expression, promoting IL-2, STAT1 and STAT4 gene expression, affecting cytokine production and response modulation. PAs interact with neonatal immunity, contribute to gut maturation, modulate the gut–brain axis and regulate host immunity. SLPs are composed of a sphingoid attached to a fatty acid. Prokaryotic SLPs are mostly found in anaerobes. SLPs are involved in proliferation, apoptosis and immune regulation as signaling molecules. The AhR is a transcription factor regulating development, reproduction and metabolism. AhR binds many ligands due to its promiscuous binding site. It participates in immune tolerance, involving lymphocytes and antigen-presenting cells during early development in exposed humans.
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Affiliation(s)
- Bryan Phillips-Farfán
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (B.P.-F.); (K.C.-A.)
| | - Fernando Gómez-Chávez
- Laboratorio de Inmunología Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (F.G.-C.); (J.A.V.-V.)
- Cátedras CONACyT-Instituto Nacional de Pediatría, México City 04530, Mexico
- Departamento de Formación Básica Disciplinaria, Escuela Nacional de Medicina y Homeopatía del Instituto Politécnico Nacional, Mexico City 07320, Mexico
| | | | | | - Karla Carvajal-Aguilera
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (B.P.-F.); (K.C.-A.)
| | - Luz Camacho
- Laboratorio de Nutrición Experimental, Instituto Nacional de Pediatría, México City 04530, Mexico; (B.P.-F.); (K.C.-A.)
- Correspondence:
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Sun Q, Yan H, Chen F, Jiang F, Chen W, Li D, Guo Y. Restoration of Proresolution Pathway with Exogenous Resolvin D1 Prevents Sevoflurane-Induced Cognitive Decline by Attenuating Neuroinflammation in the Hippocampus in Rats with Type 2 Diabetes Mellitus. Front Pharmacol 2021; 12:720249. [PMID: 34366871 PMCID: PMC8343131 DOI: 10.3389/fphar.2021.720249] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 07/13/2021] [Indexed: 12/31/2022] Open
Abstract
Sevoflurane (SEV), a commonly used volatile anesthetic, has been shown to cause cognitive decline in diabetic rats by aggregating neuroinflammation in the hippocampus, but the underlying mechanisms are unknown. Recent evidence suggests that neuroinflammation could be a consequence of failure to resolve inflammation by specialized pro-resolving lipid mediators including resolvin D1 (RvD1). Here we first examined whether type 2 diabetes mellitus (DM) alters RvD1 proresolution pathway. Diabetic Goto-Kakizaki (GK) rats and non-diabetic Wistar rats received control or 2.6% SEV exposure for 4 h. Seven days after exposure, GK control rats, compared with Wistar control rats, had significantly lower RvD1 levels in plasma and CSF and decreased RvD1 receptor FPR2 expression in the hippocampus. SEV increased RvD1 levels in plasma and CSF and FPR2 expression in the hippocampus in Wistar rats but not in GK rats. We next examined whether RvD1 treatment of GK rats can prevent SEV-induced neuroinflammation and cognitive decline. GK rats received control, SEV or SEV and once-daily treatment with exogenous RvD1 (0.2 ug/kg, ip) for 7 days. RvD1 administration markedly increased RvD1 levels in plasma and CSF and FPR2 expression in the hippocampus in GK rats received SEV. Compared with GK control rats, GK rats received SEV exhibited shorter freezing times in trace fear conditioning task, which was accompanied by increased microglia activity and pro-inflammatory cytokine expression in the hippocampus. RvD1 administration attenuated SEV-induced increases in microglia activity and pro-inflammatory cytokine expression in the hippocampus, preventing cognitive decline in GK rats. Notably, neither SEV nor RvD1 altered metabolic parameters in GK rats. The results suggest that RvD1 proresolution pathway is impaired in the brain of diabetic GK rats. which may enhance the susceptibility to SEV, contributing to neuroinflammation and cognitive decline. Restoration of RvD1 proresolution pathway in diabetic GK rats with exogenous RvD1 can prevent SEV-induced cognitive decline by attenuating neuroinflammation in the hippocampus.
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Affiliation(s)
- Qingmei Sun
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
| | - Hongdan Yan
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
| | - Falong Chen
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
| | - Fen Jiang
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
| | - Wenjuan Chen
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
| | - Dongliang Li
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
| | - Yongmin Guo
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China
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10
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Regulation of Inflammation and Oxidative Stress by Formyl Peptide Receptors in Cardiovascular Disease Progression. Life (Basel) 2021; 11:life11030243. [PMID: 33804219 PMCID: PMC7998928 DOI: 10.3390/life11030243] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/08/2021] [Accepted: 03/14/2021] [Indexed: 12/23/2022] Open
Abstract
G protein-coupled receptors (GPCRs) are the most important regulators of cardiac function and are commonly targeted for medical therapeutics. Formyl-Peptide Receptors (FPRs) are members of the GPCR superfamily and play an emerging role in cardiovascular pathologies. FPRs can modulate oxidative stress through nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-dependent reactive oxygen species (ROS) production whose dysregulation has been observed in different cardiovascular diseases. Therefore, many studies are focused on identifying molecular mechanisms of the regulation of ROS production. FPR1, FPR2 and FPR3 belong to the FPRs family and their stimulation triggers phosphorylation of intracellular signaling molecules and nonsignaling proteins that are required for NADPH oxidase activation. Some FPR agonists trigger inflammatory processes, while other ligands activate proresolving or anti-inflammatory pathways, depending on the nature of the ligands. In general, bacterial and mitochondrial formylated peptides activate a proinflammatory cell response through FPR1, while Annexin A1 and Lipoxin A4 are anti-inflammatory FPR2 ligands. FPR2 can also trigger a proinflammatory pathway and the switch between FPR2-mediated pro- and anti-inflammatory cell responses depends on conformational changes of the receptor upon ligand binding. Here we describe the detrimental or beneficial effects of the main FPR agonists and their potential role as new therapeutic and diagnostic targets in the progression of cardiovascular diseases.
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Wei C, Guo S, Liu W, Jin F, Wei B, Fan H, Su H, Liu J, Zhang N, Fang D, Li G, Shu S, Li X, He X, Zhang X, Duan C. Resolvin D1 ameliorates Inflammation-Mediated Blood-Brain Barrier Disruption After Subarachnoid Hemorrhage in rats by Modulating A20 and NLRP3 Inflammasome. Front Pharmacol 2021; 11:610734. [PMID: 33732145 PMCID: PMC7957930 DOI: 10.3389/fphar.2020.610734] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 12/10/2020] [Indexed: 12/12/2022] Open
Abstract
Inflammation is typically related to dysfunction of the blood-brain barrier (BBB) that leads to early brain injury (EBI) after subarachnoid hemorrhage (SAH). Resolvin D1 (RVD1), a lipid mediator derived from docosahexaenoic acid, possesses anti-inflammatory and neuroprotective properties. This study investigated the effects and mechanisms of RVD1 in SAH. A Sprague-Dawley rat model of SAH was established through endovascular perforation. RVD1was injected through the femoral vein at 1 and 12 h after SAH induction. To further explore the potential neuroprotective mechanism, a formyl peptide receptor two antagonist (WRW4) was intracerebroventricularly administered 1 h after SAH induction. The expression of endogenous RVD1 was decreased whereas A20 and NLRP3 levels were increased after SAH. An exogenous RVD1 administration increased RVD1 concentration in brain tissue, and improved neurological function, neuroinflammation, BBB disruption, and brain edema. RVD1 treatment upregulated the expression of A20, occludin, claudin-5, and zona occludens-1, as well as downregulated nuclear factor-κBp65, NLRP3, matrix metallopeptidase 9, and intercellular cell adhesion molecule-1 expression. Furthermore, RVD1 inhibited microglial activation and neutrophil infiltration and promoted neutrophil apoptosis. However, the neuroprotective effects of RVD1 were abolished by WRW4. In summary, our findings reveal that RVD1 provides beneficial effects against inflammation-triggered BBB dysfunction after SAH by modulating A20 and NLRP3 inflammasome.
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Affiliation(s)
- Chengcong Wei
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Department of Neurosurgery, Minzu Hospital of Guangxi Zhuang Autonomous Region, Affiliated Minzu Hospital of Guangxi Medical University, Nanning, China
| | - Shenquan Guo
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Wenchao Liu
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Fa Jin
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Boyang Wei
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Haiyan Fan
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Hengxian Su
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jiahui Liu
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Nan Zhang
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Dazhao Fang
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Guangxu Li
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Shixing Shu
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xifeng Li
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xuying He
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xin Zhang
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Chuanzhi Duan
- Neurosurgery Center, Department of Cerebrovascular Surgery, The National Key Clinical Specialty, Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Activation of MC1R with BMS-470539 attenuates neuroinflammation via cAMP/PKA/Nurr1 pathway after neonatal hypoxic-ischemic brain injury in rats. J Neuroinflammation 2021; 18:26. [PMID: 33468172 PMCID: PMC7814630 DOI: 10.1186/s12974-021-02078-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 01/07/2021] [Indexed: 12/17/2022] Open
Abstract
Background Microglia-mediated neuroinflammation plays a crucial role in the pathogenesis of hypoxic-ischemic (HI)-induced brain injury. Activation of melanocortin-1 receptor (MC1R) has been shown to exert anti-inflammatory and neuroprotective effects in several neurological diseases. In the present study, we have explored the role of MC1R activation on neuroinflammation and the potential underlying mechanisms after neonatal hypoxic-ischemic brain injury in rats. Methods A total of 169 post-natal day 10 unsexed rat pups were used. HI was induced by right common carotid artery ligation followed by 2.5 h of hypoxia. BMS-470539, a specific selective MC1R agonist, was administered intranasally at 1 h after HI induction. To elucidate the potential underlying mechanism, MC1R CRISPR KO plasmid or Nurr1 CRISPR KO plasmid was administered via intracerebroventricular injection at 48 h before HI induction. Percent brain infarct area, short- and long-term neurobehavioral tests, Nissl staining, immunofluorescence staining, and Western blot were conducted. Results The expression levels of MC1R and Nurr1 increased over time post-HI. MC1R and Nurr1 were expressed on microglia at 48 h post-HI. Activation of MC1R with BMS-470539 significantly reduced the percent infarct area, brain atrophy, and inflammation, and improved short- and long-term neurological deficits at 48 h and 28 days post-HI. MC1R activation increased the expression of CD206 (a microglial M2 marker) and reduced the expression of MPO. Moreover, activation of MC1R with BMS-470539 significantly increased the expression levels of MC1R, cAMP, p-PKA, and Nurr1, while downregulating the expression of pro-inflammatory cytokines (TNFα, IL-6, and IL-1β) at 48 h post-HI. However, knockout of MC1R or Nurr1 by specific CRISPR reversed the neuroprotective effects of MC1R activation post-HI. Conclusions Our study demonstrated that activation of MC1R with BMS-470539 attenuated neuroinflammation, and improved neurological deficits after neonatal hypoxic-ischemic brain injury in rats. Such anti-inflammatory and neuroprotective effects were mediated, at least in part, via the cAMP/PKA/Nurr1 signaling pathway. Therefore, MC1R activation might be a promising therapeutic target for infants with hypoxic-ischemic encephalopathy (HIE). Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02078-2.
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Teixeira-Santos L, Albino-Teixeira A, Pinho D. Neuroinflammation, oxidative stress and their interplay in neuropathic pain: Focus on specialized pro-resolving mediators and NADPH oxidase inhibitors as potential therapeutic strategies. Pharmacol Res 2020; 162:105280. [PMID: 33161139 DOI: 10.1016/j.phrs.2020.105280] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 10/24/2020] [Accepted: 10/27/2020] [Indexed: 02/08/2023]
Abstract
Neuropathic pain (NP) is a chronic condition that results from a lesion or disease of the nervous system, greatly impacting patients' quality of life. Current pharmacotherapy options deliver inadequate and/or insufficient responses and thus a significant unmet clinical need remains for alternative treatments in NP. Neuroinflammation, oxidative stress and their reciprocal relationship are critically involved in NP pathophysiology. In this context, new pharmacological approaches, aiming at enhancing the resolution phase of inflammation and/or restoring redox balance by targeting specific reactive oxygen species (ROS) sources, are emerging as potential therapeutic strategies for NP, with improved efficacy and safety profiles. Several reports have demonstrated that administration of exogenous specialized pro-resolving mediators (SPMs) ameliorates NP pathophysiology. Likewise, deletion or inhibition of the ROS-generating enzyme NADPH oxidase (NOX), particularly its isoforms 2 and 4, results in beneficial effects in NP models. Notably, SPMs also modulate oxidative stress and NOX also regulates neuroinflammation. By targeting neuroinflammatory and oxidative pathways, both SPMs analogues and isoform-specific NOX inhibitors are promising therapeutic strategies for NP.
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Affiliation(s)
- Luísa Teixeira-Santos
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e Inovação Medicamentosa, Universidade do Porto, Portugal.
| | - António Albino-Teixeira
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e Inovação Medicamentosa, Universidade do Porto, Portugal.
| | - Dora Pinho
- Departamento de Biomedicina - Unidade de Farmacologia e Terapêutica, Faculdade de Medicina, Universidade do Porto, Portugal; MedInUP - Centro de Investigação Farmacológica e Inovação Medicamentosa, Universidade do Porto, Portugal.
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Li A, Zhang L, Li J, Fang Z, Li S, Peng Y, Zhang M, Wang X. Effect of RvD1/FPR2 on inflammatory response in chorioamnionitis. J Cell Mol Med 2020; 24:13397-13407. [PMID: 33025767 PMCID: PMC7701521 DOI: 10.1111/jcmm.15963] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/20/2020] [Accepted: 09/18/2020] [Indexed: 12/31/2022] Open
Abstract
Chorioamnionitis (CAM), as a common intrauterine infectious disease, is the leading cause of premature birth, stillbirth, neonatal infection and sepsis. The formyl peptide receptor 2 (FPR2) is a member of GPCRs widely distributed in a variety of tissues and is associated with many inflammatory diseases. With the discovery of FPR2 in human placenta, the possibility of exploring the function of FPR2 in obstetrics is evolving. The Resolvin D1 (RvD1) plays an important role in the resolution of inflammation by combining with FPR2. In this study, we evaluated the role of FPR2 and RvD1 in CAM, not only in the human placenta but also in mouse models. The expression of FPR2 increased in the placenta of CAM patients and the downstream PPARγ/NF-κB signalling changed accordingly. Moreover, Fpr2-/- mice were highly susceptible to LPS, displaying a worse CAM symptom, compared with WT mice. By establishing a model of trophoblast inflammation in vitro, it was confirmed that RvD1 rescued the effect of LPS on inflammation by combining with FPR2 and its downstream PPARγ/NF-κB pathway. Otherwise, RvD1 improved the preterm labour in a mouse model of CAM induced by LPS. Altogether, these findings show that RvD1 alleviated the inflammation of trophoblast in vivo and in vitro through FPR2/PPARγ/NF-κB pathway, suggesting RvD1/FPR2 might be a novel therapeutic strategy to alleviate CAM.
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Affiliation(s)
- Anna Li
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province, Jinan, China
| | - Lin Zhang
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province, Jinan, China
| | - Junxia Li
- Department of Occupational and Environmental Hygiene, School of Public Health, Weifang Medical University, Weifang, China
| | - Zhenya Fang
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province, Jinan, China
| | - Shuxian Li
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province, Jinan, China
| | - Yanjie Peng
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province, Jinan, China
| | - Meihua Zhang
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province, Jinan, China
| | - Xietong Wang
- Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, Maternal and Child Health Care Hospital of Shandong Province, Jinan, China.,Department of Obstetrics and Gynecology, Provincial Hospital Affiliated to Shandong University, Jinan, China
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Resolvin D3 Promotes Inflammatory Resolution, Neuroprotection, and Functional Recovery After Spinal Cord Injury. Mol Neurobiol 2020; 58:424-438. [PMID: 32964315 DOI: 10.1007/s12035-020-02118-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/05/2020] [Indexed: 12/13/2022]
Abstract
Resolvins, a new family from the endogenous specialized pro-resolving mediators (SPMs), promote the resolution of the inflammatory response. Resolvin D3 (RvD3), a docosahexaenoic acid (DHA) product, has been known to suppress the inflammatory response. However, the anti-inflammatory and neuroprotective effects of RvD3 are not known in a model of spinal cord injury (SCI). Here, we investigated the anti-inflammatory and neuroprotective effect of RvD3 in a mouse model of SCI. Processes associated with anti-inflammation and angiogenesis were studied in RAW 264.7 cells and the human brain endothelial cell line hCMEC/D3, respectively. Additionally, female C57BL/6 mice were subjected to moderate compression SCI (20-g weight compression for 1 min) followed by intrathecal injection of vehicle or RvD3 (1 μg/20 μL) at 1 h post-SCI. RvD3 decreased the lipopolysaccharide (LPS)-induced production of inflammatory mediators and nitric oxide (NO) in RAW 264.7 cells and promoted an angiogenic effect in the hCMEC/D3 cell line. Treatment with RvD3 improved locomotor recovery and reduced thermal hyperalgesia in SCI mice compared with vehicle treatment at 14 days post-SCI. Remarkably, RvD3-treated mice exhibited reduced expression of inflammatory cytokines (TNF-α, IL6, IL1β) and chemokines (CCL2, CCL3). Also, RvD3-treated mice exhibited increased expression of tight junction proteins such as zonula occludens (ZO)-1 and occludin. Furthermore, immunohistochemistry showed a decreased level of gliosis (GFAP, Iba-1) and neuroinflammation (CD68, TGF-β) and enhanced neuroprotection. These data provide evidence that intrathecal injection of RvD3 represents a promising therapeutic strategy to promote inflammatory resolution, neuroprotection, and neurological functional recovery following SCI.
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Shahraz A, Wißfeld J, Ginolhac A, Mathews M, Sinkkonen L, Neumann H. Phagocytosis-related NADPH oxidase 2 subunit gp91phox contributes to neurodegeneration after repeated systemic challenge with lipopolysaccharides. Glia 2020; 69:137-150. [PMID: 32721081 DOI: 10.1002/glia.23890] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 12/20/2022]
Abstract
Repeated systemic challenge with lipopolysaccharides (LPS) can induce microglia activation and inflammatory neurodegeneration in the substantia nigra pars compacta region of mice. We now explored the role of mononuclear phagocytes associated nicotinamide adenine dinucleotide phosphate oxidase 2 (NOX-2) in inflammatory neurodegeneration. Cybb-deficient NOX-2 knock-out (KO) and control wild type (WT) mice were treated intraperitoneally daily over four consecutive days with 1 μg/gbw/day LPS. Transcriptome analysis by RNA-seq of total brain tissue indicated increased LPS-induced upregulation of genes belonging to the reactive oxygen species and reactive nitrogen species production, complement and lysosome activation as well as apoptosis and necroptosis in WT compared to NOX-2 KO mice. Validation of up-regulated gene transcripts via qRT-PCR confirmed that LPS-challenged NOX-2 KO mice expressed lower levels of the microglial phagocytosis-related genes Nos2, Cd68, Aif1/Iba1, Cyba, Itgam, and Fcer1g compared to WT mice at Day 5 after systemic inflammatory challenge, but no significant differences in the pro-inflammatory genes Tnfα and Il1b as well as microglial IBA1 and CD68 intensities were observed between both genotypes. Furthermore, loss of tyrosine hydroxylase positive (TH+) and NeuN positive neurons in the substantia nigra pars compacta upon repeated systemic LPS application were attenuated in NOX-2 KO mice. Thus, our data demonstrate that loss of dopaminergic neurons in the substantia nigra pars compacta after repeated systemic challenge with LPS is associated with a microglial phagocytosis-related gene activation profile involving the NADPH oxidase subunit Cybb/gp91phox.
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Affiliation(s)
- Anahita Shahraz
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Venusberg-Campus 1, Bonn, 53127, Germany
| | - Jannis Wißfeld
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Venusberg-Campus 1, Bonn, 53127, Germany
| | - Aurélien Ginolhac
- Department of Life Sciences and Medicine, University of Luxembourg, 6, avenue du Swing, Belvaux, L4367, Luxembourg
| | - Mona Mathews
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Venusberg-Campus 1, Bonn, 53127, Germany
| | - Lasse Sinkkonen
- Department of Life Sciences and Medicine, University of Luxembourg, 6, avenue du Swing, Belvaux, L4367, Luxembourg
| | - Harald Neumann
- Institute of Reconstructive Neurobiology, Medical Faculty and University Hospital of Bonn, University of Bonn, Venusberg-Campus 1, Bonn, 53127, Germany
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Eser Ocak P, Ocak U, Sherchan P, Gamdzyk M, Tang J, Zhang JH. Overexpression of Mfsd2a attenuates blood brain barrier dysfunction via Cav-1/Keap-1/Nrf-2/HO-1 pathway in a rat model of surgical brain injury. Exp Neurol 2020; 326:113203. [PMID: 31954682 PMCID: PMC7038791 DOI: 10.1016/j.expneurol.2020.113203] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Disruption of the blood brain barrier (BBB) and subsequent cerebral edema formation is one of the major adverse effects of brain surgery, leading to postoperative neurological dysfunction. Recently, Mfsd2a has been shown to have a crucial role for the maintenance of BBB functions. In this study, we aimed to evaluate the role of Mfsd2a on BBB disruption following surgical brain injury (SBI) in rats. MATERIALS AND METHODS Rats were subjected to SBI by partial resection of the right frontal lobe. To evaluate the effect of Mfsd2a on BBB permeability and neurobehavior outcome following SBI, Mfsd2a was either overexpressed or downregulated in the brain by administering Mfsd2a CRISPR activation or knockout plasmids, respectively. The potential mechanism of Mfsd2a-mediated BBB protection through the cav-1/Nrf-2/HO-1 signaling pathway was evaluated. RESULTS Mfsd2a levels were significantly decreased while cav-1, Nrf-2 and HO-1 levels were increased in the right frontal perisurgical area following SBI. When overexpressed, Mfsd2a attenuated brain edema and abolished neurologic impairment caused by SBI while downregulation of Mfsd2a expression further deteriorated BBB functions and worsened neurologic performance following SBI. The beneficial effect of Mfsd2a overexpression on BBB functions was associated with diminished expression of cav-1, increased Keap-1/Nrf-2 dissociation and further augmented levels of Nrf-2 and HO-1 in the right frontal perisurgical area, leading to enhanced levels of tight junction proteins following SBI. The BBB protective effect of Mfsd2a was blocked by selective inhibitors of Nrf-2 and HO-1. CONCLUSIONS Mfsd2a attenuates BBB disruption through cav-1/Nrf-2/HO-1 signaling pathway in rats subjected to experimental SBI.
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Affiliation(s)
- Pinar Eser Ocak
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurosurgery, Uludag University School of Medicine, Bursa 16120, Turkey
| | - Umut Ocak
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Emergency Medicine, Bursa Yuksek Ihtisas Training and Research Hospital, University of Health Sciences, Bursa 16310, Turkey; Department of Emergency Medicine, Bursa City Hospital, Bursa 16110, Turkey
| | - Prativa Sherchan
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Marcin Gamdzyk
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA.
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Joffre C, Dinel AL, Chataigner M, Pallet V, Layé S. n-3 Polyunsaturated Fatty Acids and Their Derivates Reduce Neuroinflammation during Aging. Nutrients 2020; 12:nu12030647. [PMID: 32121189 PMCID: PMC7146513 DOI: 10.3390/nu12030647] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 12/15/2022] Open
Abstract
: Aging is associated to cognitive decline, which can lead to loss of life quality, personal suffering, and ultimately neurodegenerative diseases. Neuroinflammation is one of the mechanisms explaining the loss of cognitive functions. Indeed, aging is associated to the activation of inflammatory signaling pathways, which can be targeted by specific nutrients with anti-inflammatory effects. Dietary n-3 polyunsaturated fatty acids (PUFAs) are particularly attractive as they are present in the brain, possess immunomodulatory properties, and are precursors of lipid derivates named specialized pro-resolving mediators (SPM). SPMs are crucially involved in the resolution of inflammation that is modified during aging, resulting in chronic inflammation. In this review, we first examine the effect of aging on neuroinflammation and then evaluate the potential beneficial effect of n-3 PUFA as precursors of bioactive derivates, particularly during aging, on the resolution of inflammation. Lastly, we highlight evidence supporting a role of n-3 PUFA during aging.
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Affiliation(s)
- Corinne Joffre
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
- Correspondence:
| | - Anne-Laure Dinel
- NutriBrain Research and Technology Transfer, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Mathilde Chataigner
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
- Abyss Ingredients, 56850 Caudan, France
| | - Véronique Pallet
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
| | - Sophie Layé
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
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Morse SV, Boltersdorf T, Chan TG, Gavins FNE, Choi JJ, Long NJ. In vivo delivery of a fluorescent FPR2/ALX-targeted probe using focused ultrasound and microbubbles to image activated microglia. RSC Chem Biol 2020. [DOI: 10.1039/d0cb00140f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Targeted imaging agent labels activated microglia when delivered into the brain with focused ultrasound and microbubbles – a tool to investigate inflammation in neurological disorders.
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Affiliation(s)
| | - Tamara Boltersdorf
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
| | - Tiffany G. Chan
- Department of Bioengineering
- Imperial College London
- London
- UK
- Department of Chemistry
| | | | - James J. Choi
- Department of Bioengineering
- Imperial College London
- London
- UK
| | - Nicholas J. Long
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
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Zhao W, Zeng X, Meng F, Bi X, Xu D, Chen X, Li Q, Han Y. Structural characterization and in vitro-in vivo evaluation of effect of a polysaccharide from Sanguisorba officinalis on acute kidney injury. Food Funct 2019; 10:7142-7151. [PMID: 31595901 DOI: 10.1039/c9fo01891c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report here an acidic polysaccharide, namely RSP-3, which ameliorates acute kidney injury and is obtained from Sanguisorba officinalis. We extracted and purified two polysaccharides from this herb based on the acidity and screened them for their effect in regulating the immunological activity of macrophages. Among them, RSP-3 exhibited significant anti-inflammatory activity against lipopolysaccharide (LPS)-stimulated macrophages by decreasing TNF-α and IL-6 levels. Subsequently, we found that RSP-3 suppressed ER stress, reduced ROS production and blocked NF-κBp65 translocation. After fully characterizing RSP-3 with a series of analytical technologies, we tested its anti-acute kidney injury (AKI) effect in vivo. In a murine AKI model induced by LPS, treatment with RSP-3 effectively ameliorated renal function. Besides, it decreased the levels of TNF-α and IL-6 in serum and reduced macrophage infiltration in injured kidney tissue. In sum, RSP-3, with a significant protective effect against AKI by showing anti-inflammatory activity, may become a meaningful drug candidate for treatment of AKI.
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Affiliation(s)
- Wenwen Zhao
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China.
| | - Xi Zeng
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China.
| | - Fancheng Meng
- College of Pharmaceutical Sciences, Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Southwest University, Chongqing, China
| | - Xiaolin Bi
- Nutrition Department, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Dahai Xu
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China.
| | - Xiuping Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Qiu Li
- College of Chemistry and Pharmaceutical, Qingdao Agricultural University, Qingdao 266109, China.
| | - Yantao Han
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China.
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