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Sun X, Qin X, Liang G, Chang X, Zhu H, Zhang J, Zhang D, Sun Y, Feng S. Manganese dioxide nanoparticles provoke inflammatory damage in BV2 microglial cells via increasing reactive oxygen species to activate the p38 MAPK pathway. Toxicol Ind Health 2024; 40:244-253. [PMID: 38518383 DOI: 10.1177/07482337241242508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
With the widespread use of manganese dioxide nanoparticles (nano MnO2), health hazards have also emerged. The inflammatory damage of brain tissues could result from nano MnO2, in which the underlying mechanism is still unclear. During this study, we aimed to investigate the role of ROS-mediated p38 MAPK pathway in nano MnO2-induced inflammatory response in BV2 microglial cells. The inflammatory injury model was established by treating BV2 cells with 2.5, 5.0, and 10.0 μg/mL nano MnO2 suspensions for 12 h. Then, the reactive oxygen species (ROS) scavenger (20 nM N-acetylcysteine, NAC) and the p38 MAPK pathway inhibitor (10 μM SB203580) were used to clarify the role of ROS and the p38 MAPK pathway in nano MnO2-induced inflammatory lesions in BV2 cells. The results indicated that nano MnO2 enhanced the expression of pro-inflammatory cytokines IL-1β and TNF-α, elevated intracellular ROS levels and activated the p38 MAPK pathway in BV2 cells. Controlling intracellular ROS levels with NAC inhibited p38 MAPK pathway activation and attenuated the inflammatory response induced by nano MnO2. Furthermore, inhibition of the p38 MAPK pathway with SB203580 led to a decrease in the production of inflammatory factors (IL-1β and TNF-α) in BV2 cells. In summary, nano MnO2 can induce inflammatory damage by increasing intracellular ROS levels and further activating the p38 MAPK pathway in BV2 microglial cells.
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Affiliation(s)
- Xingchang Sun
- Institute of Occupational Diseases, Lanzhou Petrochemical General Hospital, Lanzhou, China
| | - Xin Qin
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, China
| | - Gaofeng Liang
- Institute of Occupational Diseases, Lanzhou Petrochemical General Hospital, Lanzhou, China
| | - Xuhong Chang
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, China
| | - Huike Zhu
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, China
| | - Jiahao Zhang
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, China
| | - Dan Zhang
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, China
| | - Yingbiao Sun
- Department of Toxicology, School of Public Health, Lanzhou University, Lanzhou, China
| | - Sanwei Feng
- Institute of Occupational Diseases, Lanzhou Petrochemical General Hospital, Lanzhou, China
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Lei Y, Zhu Y, Mallah MA, Lu P, Yang L, He X, Shang P, Chen Y, Zhou X, Feng F, Zhang Q. The activation of SIRT1 ameliorates BPDE-induced inflammatory damage in BEAS-2B cells via HMGB1/TLR4/NF-κB pathway. Environ Toxicol 2023; 38:2429-2439. [PMID: 37436145 DOI: 10.1002/tox.23878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 05/08/2023] [Accepted: 06/05/2023] [Indexed: 07/13/2023]
Abstract
Benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE), the metabolite of environmental pollutant benzo(a)pyrene (B(a)P) could induce pulmonary toxicity and inflammation. SIRT1, an NAD+ -dependent histone deacetylase, is known to regulate inflammation in the occurrence and development of various diseases, but its effects on BPDE-induced acute lung injury are still unknown. The present study aimed to explore the role of SIRT1 in BPDE-induced acute lung injury. Here, human bronchial epithelial (HBE) cells (BEAS-2B) cells were stimulated with BPDE at different concentrations (0.50, 0.75, and 1.00 μmol/L) for 24 h, we found that the levels of cytokines in the supernatant were increased and the expression of SIRT1 in cells was down-regulated, at the same time, BPDE stimulation up-regulated the protein expression of HMGB1, TLR4, and p-NF-κBp65 in BEAS-2B cells. Then the activator and inhibitor of SIRT1 were used before BPDE exposure, it was shown that the activation of SIRT1 significantly attenuated the levels of inflammatory cytokines and HMGB1, and reduced the expression of HMGB1, AC-HMGB1, TLR4, and p-NF-κBp65 protein; while these results were reversed by the inhibition of SIRT1. This study revealed that the SIRT1 activation may protect against BPDE-induced inflammatory damage in BEAS-2B cells by regulating the HMGB1/TLR4/NF-κB pathway.
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Affiliation(s)
- Yanting Lei
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
| | - Yonghang Zhu
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
| | - Manthar Ali Mallah
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
| | - Ping Lu
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
| | - Liu Yang
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
| | - Xi He
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
| | - Pingping Shang
- Key Laboratory of Tobacco Chemistry, Zhengzhou Tobacco Research Institute, CNC, Zhengzhou, China
| | - Yusong Chen
- Quality Supervision & Test Center, China National Tobacco Corporation Shandong Branch, Jinan, China
| | - Xiaolei Zhou
- Department of Pulmonary Medicine, Henan Provincial Chest Hospital, Zhengzhou University, Zhengzhou, China
| | - Feifei Feng
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
| | - Qiao Zhang
- Department of Toxicology, Zhengzhou University School of Public Health, Zhengzhou, China
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Yuan H, Sui H, Li S. Diosgenin alleviates the inflammatory damage and insulin resistance in high glucose‑induced podocyte cells via the AMPK/SIRT1/NF‑κB signaling pathway. Exp Ther Med 2023; 25:259. [PMID: 37153902 PMCID: PMC10155255 DOI: 10.3892/etm.2023.11958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/22/2023] [Indexed: 05/10/2023] Open
Abstract
Diabetic nephropathy (DN) is the predominant cause of end-stage renal disease globally. Diosgenin (DSG) has been reported to play a protective role in podocyte injury in DN. The present study aimed to explore the role of DSG in DN, as well as its mechanism of action in a high glucose (HG)-induced in vitro model of DN in podocytes. Cell viability, apoptosis, inflammatory response and insulin-stimulated glucose uptake were evaluated using Cell Counting Kit-8, TUNEL, ELISA and 2-deoxy-D-glucose assay, respectively. In addition, the expression of AMP-activated protein kinase (AMPK)/sirtuin 1 (SIRT1)/NF-κB signaling-related proteins in podocyte cells was measured using western blotting. The results indicated that DSG enhanced the viability of podocytes after HG exposure, but inhibited inflammatory damage and attenuated insulin resistance. Moreover, DSG induced the activation of the AMPK/SIRT1/NF-κB signaling pathway. Furthermore, treatment with compound C, an inhibitor of AMPK, counteracted the protective effects of DSG on HG-induced podocyte cells. Therefore, DSG may be a potential therapeutic compound for the treatment of diabetic nephropathy.
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Affiliation(s)
- Haoyu Yuan
- Department of Endocrinology, The First Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Huacheng Sui
- Department of Endocrinology, The First Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Saimei Li
- Department of Endocrinology, The First Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
- Correspondence to: Dr Saimei Li, Department of Endocrinology, The First Clinical College of Guangzhou University of Chinese Medicine, 12 Airport Road, Guangzhou, Guangdong 510405, P.R. China
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Song J, Zhang X, Yin Y, Guo M, Zhao X, Wang L, Ren C, Yin Y, Zhang X, Deng X, Lu D. Loss of RPA1 Impairs Peripheral T Cell Homeostasis and Exacerbates Inflammatory Damage through Triggering T Cell Necroptosis. Adv Sci (Weinh) 2023; 10:e2206344. [PMID: 36721037 PMCID: PMC10104672 DOI: 10.1002/advs.202206344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/29/2022] [Indexed: 06/18/2023]
Abstract
The peripheral T cell pool is maintained at dynamic homeostasis through fine-tuning of thymic output and self-renewal of naïve T cells. Lymphopenia or reduced lymphocyte number is implicated in autoimmune diseases, yet little is known about the homeostatic mechanisms. Here, it is reported that the replication protein A1 (RPA1) plays a critical role in T cell homeostasis. Utilizing T cell-specific Rpa1-deficient (Rpa1fl/fl Cd4-cre) mice, loss of Rpa1 results in lymphopenia through restraining peripheral T cell population and limiting TCR repertoire diversity. Moreover, Rpa1fl/fl Cd4-cre mice exhibit increased susceptibility to inflammatory diseases, including colitis and hepatitis. Clinical analysis reveals that the expression of RPA1 is reduced in patients with ulcerative colitis or other autoinflammatory diseases. Mechanistically, depletion of RPA1 activates ZBP1-RIPK3 signaling through triggering the genomic DNA leakage into cytosol, consequently resulting in T cell necroptosis. This necroptotic T cell death induced by RPA1 deficiency allows the release of damage-associated molecular patterns (DAMPs), which in turn recruits leukocytes and exacerbates inflammatory response. Reciprocally, chemical or genetic inhibition of necroptosis signaling can ameliorate the Rpa1 deficiency-induced inflammatory damage. The studies thus uncover the importance of RPA1-ZBP1-RIPK3 axis in T cell homeostasis and provide a promising strategy for autoinflammatory disease treatment.
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Affiliation(s)
- Jia Song
- Department of Geriatric DentistryDepartment of Dental Materials & Dental Medical Devices Testing CenterNational Engineering Research Center of Oral Biomaterials and Digital Medical DevicesNMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xin Zhang
- Institute of Systems BiomedicineDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing100191P. R. China
| | - Yue Yin
- Institute of Systems BiomedicineDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing100191P. R. China
| | - Mengfan Guo
- Institute of Systems BiomedicineDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing100191P. R. China
| | - Xuyang Zhao
- Institute of Systems BiomedicineDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing100191P. R. China
| | - Likun Wang
- Institute of Systems BiomedicineDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing100191P. R. China
| | - Caixia Ren
- Department of Human AnatomyHistology and EmbryologyPeking University Health Science CenterBeijing100191P. R. China
| | - Yuxin Yin
- Institute of Systems BiomedicineDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing100191P. R. China
| | - Xuehui Zhang
- Department of Geriatric DentistryDepartment of Dental Materials & Dental Medical Devices Testing CenterNational Engineering Research Center of Oral Biomaterials and Digital Medical DevicesNMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xuliang Deng
- Department of Geriatric DentistryDepartment of Dental Materials & Dental Medical Devices Testing CenterNational Engineering Research Center of Oral Biomaterials and Digital Medical DevicesNMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Dan Lu
- Institute of Systems BiomedicineDepartment of PathologySchool of Basic Medical SciencesPeking University Health Science CenterBeijing100191P. R. China
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Zhang Y, He B, Wu L, Mi X, Zhang L, Li S, Wang J, Yu X. Exposure to particulate matter 2.5 leading to lung microbiome disorder and the alleviation effect of Auricularia auricular-judae polysaccharide. Int J Occup Med Environ Health 2022; 35:651-664. [PMID: 35913271 PMCID: PMC10464723 DOI: 10.13075/ijomeh.1896.01742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 08/20/2021] [Indexed: 10/16/2022] Open
Abstract
OBJECTIVES The aim of the paper is to explore the role of lung microbiome disorder in lung tissue injury induced by exposure to particulate matter with a maximum diameter of 2.5 μm (PM2.5) and the alleviation effect of Auricularia auricular-judae polysaccharide (AAP). MATERIAL AND METHODS Sprague Dawley rats were given PM2.5 suspension at a dose of 20 mg/l twice a week for 8 weeks. Then, 100 mg/kg or 200 mg/kg of AAP was administered to the rats after PM2.5 exposure. The bronchoalveolar lavage fluid (BALF) and lung tissue samples were collected at the end of the experiment. The BALF was meant to detect changes in lung microbiome by 16S sequences and cluster analysis, with the application of the principal component analysis and the partial least squares discriminant analysis. The levels of interferon-γ (IFN-γ), and interleukin (IL)-4, IL-8, and IL-10 in lung tissue were detected by the enzyme-linked immunosorbent assay method. The pathological changes in lung tissue were observed by hematoxylin and eosin staining. RESULTS After PM2.5 exposure, the alveolar septum was widened, and the structures of alveolar walls were destroyed. There was inflammatory cells infiltration in the alveolar space and the interstitial space. Alpha diversity in BALF showed that the Chao1, ACE, Simpson, and Shannon values were increased, and the lung microbiome analysis revealed that the relative abundance of Firmicutes and Clostridium increased, while the relative abundance of Bacteroidetes and Akkermansia decreased. The contents of IFN-γ and IL-8 in lung tissue increased while the content of IL-10 decreased. After the administration of AAP, the alveolar structure damage was alleviated, and the interstitial hemorrhage, edema, and inflammatory cells infiltration were reduced. The Chao1 and ACE values decreased, and the taxonomic abundance values of Akkermansia were much higher. Simultaneously, the contents of IFN-γ, IL-4, and IL-8 decreased, and the content of IL-10 increased. CONCLUSIONS It was found that PM2.5 resulted in lung microbiome disorder, which might lead to the inflammation of lung tissue. It was also revealed that AAP could alleviate the inflammatory damage of lung tissue induced by PM2.5. Int J Occup Med Environ Health. 2022;35(6):651-64.
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Affiliation(s)
- Yanshu Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, People's Republic of China
- Experiment Animal Center, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Bin He
- School of Public Health, North China University of Science and Technology, Tangshan, People's Republic of China
- Experiment Animal Center, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Lei Wu
- School of Public Health, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Xiaoyi Mi
- School of Public Health, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Lijin Zhang
- School of Public Health, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Shuang Li
- Experiment Animal Center, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Jian Wang
- Experiment Animal Center, North China University of Science and Technology, Tangshan, People's Republic of China
| | - Xiaoyu Yu
- School of Psychology and Mental Health, North China University of Science and Technology, Tangshan, People's Republic of China
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Yan M, Li X, Sun C, Tan J, Liu Y, Li M, Qi Z, He J, Wang D, Wu L. Sodium Butyrate Attenuates AGEs-Induced Oxidative Stress and Inflammation by Inhibiting Autophagy and Affecting Cellular Metabolism in THP-1 Cells. Molecules 2022; 27:molecules27248715. [PMID: 36557849 PMCID: PMC9781837 DOI: 10.3390/molecules27248715] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/04/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022]
Abstract
In recent years, sodium butyrate has gained increased attention for its numerous beneficial properties. However, whether sodium butyrate could alleviate inflammatory damage by macrophage activation and its underlying mechanism remains unclear. The present study used an advanced glycosylation products- (AGEs-) induced inflammatory damage model to study whether sodium butyrate could alleviate oxidative stress, inflammation, and metabolic dysfunction of human monocyte-macrophage originated THP-1 cells in a PI3K-dependent autophagy pathway. The results indicated that sodium butyrate alleviated the AGEs-induced oxidative stress, decreased the level of reactive oxygen species (ROS), increased malondialdehyde (MDA) and mRNA expression of pro-inflammatory cytokines of interleukin (IL)-1β and tumor necrosis factor (TNF)-α, and increased the content of superoxide dismutase (SOD). Sodium butyrate reduced the protein expression of the NLR family, pyrin domain-containing protein 3 (NLRP3) and Caspase-1, and decreased the nucleus expression of nuclear factor-kappaB (NF-κB). Sodium butyrate decreased the expression of light-chain-associated protein B (LC3B) and Beclin-1, and inhibited autophagy. Moreover, sodium butyrate inhibited the activation of the PI3K/Akt pathway in AGEs-induced THP-1 cells. In addition, the metabolomics analysis showed that sodium butyrate could affect the production of phosphatidylcholine, L-glutamic acid, UDP-N-acetylmuraminate, biotinyl-5'-AMP, and other metabolites. In summary, these results revealed that sodium butyrate inhibited autophagy and NLRP3 inflammasome activation by blocking the PI3K/Akt/NF-κB pathway, thereby alleviating oxidative stress, inflammation, and metabolic disorder induced by AGEs.
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Affiliation(s)
- Man Yan
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Xiang Li
- Medical Laboratory Department, Huai’an Second People’s Hospital, Huai’an 223022, China
| | - Chang Sun
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Jiajun Tan
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Yuanyuan Liu
- Department of Endocrinology, The Affiliated Huai’an No. 1 People’s Hospital of Nanjing Medical University, Huai’an 223300, China
| | - Mengqi Li
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Zishang Qi
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Jiayuan He
- Zhenjiang Center for Disease Control and Prevention, Zhenjiang 212002, China
| | - Dongxu Wang
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhengjiang 212100, China
- Correspondence: (D.W.); (L.W.)
| | - Liang Wu
- Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China
- Correspondence: (D.W.); (L.W.)
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Hao Y, Gao X. Diosgenin protects retinal pigment epithelial cells from inflammatory damage and oxidative stress induced by high glucose by activating AMPK/Nrf2/HO-1 pathway. Immun Inflamm Dis 2022; 10:e698. [PMID: 36444632 PMCID: PMC9667204 DOI: 10.1002/iid3.698] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/12/2022] [Accepted: 08/22/2022] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Diosgenin is a natural steroidal compound with reported antidiabetic and many other protective properties. This study aimed to explore the protective effect of diosgenin on high-glucose (HG)-induced retinal pigment epithelial cells. METHODS HG-induced ARPE-19 cells were considered as a cell model of diabetic retinopathy (DR). The viability and apoptosis of ARPE-19 cells induced by HG treated with either diosgenin or Compound C (CC; dorsomorphin) were detected by Cell Counting Kit-8 assay and flow cytometric analysis. The expression of apoptosis-related proteins, inflammation-related proteins, and AMPK/Nrf2/HO-1 pathway-related proteins was detected by western blotting. The levels of inflammatory cytokines and detection of oxidative stress indexes were performed using the appropriate assay kits. The messenger RNA expression of inflammatory cytokines was detected by real-time quantitative polymerase chain reaction. RESULTS There was no obvious effect of diosgenin on the viability of ARPE-19 cells and the viability of ARPE-19 cells was significantly reduced after HG induction. However, diosgenin increased the viability, inhibited the apoptosis, and reduced the inflammatory response and oxidative stress of ARPE-19 cells induced by HG. In addition, diosgenin could activate the AMPK/Nrf2/HO-1 pathway. CC, an AMPK inhibitor, could reverse the above changes caused by diosgenin treatment in ARPE-19 cells induced by HG. CONCLUSIONS Diosgenin could protect ARPE-19 cells from inflammatory damage and oxidative stress induced by HG, by activating the AMPK/Nrf2/HO-1 pathway.
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Affiliation(s)
- Yang Hao
- Department of OpthalmologyThe First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxiChina
| | - Xuefeng Gao
- College of ManagementBeijing Capital Normal University College of ManagementBeijingChina
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Xia X, Zhang C, Li L, Wang S, Ding X, He J, Xu S, Wang M. Bovine Lactoferrin Alleviates Pulmonary Lipid Peroxidation and Inflammatory Damage in Heat Stroke Rats. Ther Hypothermia Temp Manag 2022; 12:223-228. [PMID: 35605088 DOI: 10.1089/ther.2022.0002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Lung injury occurring in the early stage of heat stroke (HS) leads to hypoxia and further aggravation of other organic damage. Lactoferrin (LF) is an iron binding protein with anti-inflammatory and antioxidant effects. This study focuses on the protection of preadministration of bovine lactoferrin (BLF) against lung injury in rats with HS. Sixty-four Sprague-Dawley male rats were divided into four groups randomly: control (CON)+phosphate-buffered saline (PBS) (n = 16), HS+PBS (n = 16), HS+low-dose BLF (LBLF) (n = 16), and HS+high-dose BLF (HBLF) (n = 16). CON+PBS and HS+PBS were preadministered 10 mL/kg PBS for 1 week. HS+LBLF and HS+HBLF were preadministered 100 and 200 mg/kg BLF for 1 week, respectively. The HS onset time and the survival rate were recorded, and bronchoalveolar lavage fluid was obtained to measure protein concentration. Lung was obtained for pathological analysis and wet/dry weight ratio measurement; later, the content of malondialdehyde (MDA), activity of myeloperoxidase (MPO), and superoxide dismutase (SOD) were measured in lung tissue homogenate. The results indicated that BLF preadministration could delay the HS onset time, enhance the survival rate, the levels of serum inflammatory cytokine and MDA content in HS+LBLF and HS+HBLF showed significant reduction compared with HS+PBS, while a significant elevation of SOD activity and reduction of MPO activity in HS+HBLF. Our results demonstrate that BLF preadministration could relieve lung injury in HS rats by enhancing thermal endurance, and alleviating serum inflammatory response and pulmonary oxidative stress damage.
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Affiliation(s)
- Xinyu Xia
- Department of Emergency, The First Affiliated Hospital of Naval Medical University, Shanghai, China.,Department of Emergency, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Chenjie Zhang
- Department of Vasculocardiology, The First People's Hospital of Kunshan, Suzhou, China
| | - Lei Li
- Department of Emergency, The First Affiliated Hospital of Naval Medical University, Shanghai, China.,Department of Emergency, The Second Naval Hospital of Southern Theater Command of PLA, Hainan, China
| | - Shaokang Wang
- Department of Emergency, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Xian Ding
- Department of Emergency, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Jian He
- Department of Emergency, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Shuogui Xu
- Department of Orthopedic Trauma, The First Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Meitang Wang
- Department of Emergency, The First Affiliated Hospital of Naval Medical University, Shanghai, China
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9
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Zhao YJ, Chen YE, Zhang HJ, Gu X. LncRNA UCA1 remits LPS-engendered inflammatory damage through deactivation of miR-499b-5p/TLR4 axis. IUBMB Life 2020; 73:463-473. [PMID: 33368965 DOI: 10.1002/iub.2443] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 12/17/2020] [Indexed: 12/17/2022]
Abstract
Neonatal pneumonia is a high neonatal mortality disease. The current research was designed to elucidate the modulatory function and feasible molecular mechanism of UCA1 in LPS-induced injury in pneumonia. Herein, LPS was applied to induce WI-38 cell inflammatory damage. We displayed that UCA1 was elevated in LPS-injured WI-38 cells. In the functional aspect, intervention of UCA1 evidently aggrandized cell viability in LPS-triggered WI-38 cells. In the meanwhile, elimination of UCA1 distinctly assuaged cell apoptosis concomitant with declined levels of proapoptotic proteins Bax and C-caspase-3, and ascended the expression of antiapoptotic protein Bcl-2. Subsequently, disruption of UCA1 manifestly restrained inflammatory damage as characterized by declination of multiple pro-inflammatory factors IL-1β, IL-6, and TNF-α in WI-38 cells under LPS circumstance. More importantly, we predicted and verified that UCA1 functioned as a ceRNA by efficaciously binding to miR-499b-5p thereby inversely adjusting miR-499b-5p expression. Interesting, TLR4 was identified as direct target of miR-499b-5p, and positively regulated by UCA1 through sponging miR-499b-5p. Mechanistically, absence of miR-499b-5p or restoration of TLR4 impeded the beneficial effects of UCA1 ablation on LPS-stimulated apoptosis and inflammatory response. Collectively, these observations illuminated that UCA1 inhibition protected WI-38 cells against LPS-managed inflammatory injury and apoptosis process via miR-499b-5p/TLR4 crosstalk, which ultimately influencing the development of pneumonia.
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Affiliation(s)
- Yan-Jun Zhao
- Department of Respiratory and Critical Care Medicine, Xi'an Chest Hospital, Xi'an TB and Thoracic Tumor Hospital, Xi'an, PR China
| | - Yue-E Chen
- Department of Respiratory and Critical Care Medicine, Xi'an Chest Hospital, Xi'an TB and Thoracic Tumor Hospital, Xi'an, PR China
| | - Hong-Jun Zhang
- Department of Respiratory and Critical Care Medicine, Xi'an Chest Hospital, Xi'an TB and Thoracic Tumor Hospital, Xi'an, PR China
| | - Xing Gu
- Department of Respiratory and Critical Care Medicine, Xi'an Chest Hospital, Xi'an TB and Thoracic Tumor Hospital, Xi'an, PR China
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Liu X, Zhao P, Ge W. Knockdown of circular RNA circZNF652 remits LPS-induced inflammatory damage by regulating miR-181a. Biofactors 2020; 46:1031-1040. [PMID: 31889339 DOI: 10.1002/biof.1606] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Infantile pneumonia (IP) is a usual disease in infants and young children. The function and underlying mechanism of circZNF652 on lipopolysaccharide (LPS)-triggered inflammatory damage in WI-38 cells were detected in this article. METHODS WI-38 cells were induced by dosages of LPS to construct inflammatory injury model. WI-38 cell viability and apoptosis were detected by CCK-8 assay and flow cytometry, respectively. CircZNF652 and miR-181a levels were changed and detected by cell transfection and qRT-PCR. The levels of apoptosis and JNK/p38 and NF-κB pathways-related proteins, as well as the level of Cox-2 were detected by western blot. Finally, the concentrations of inflammatory factors were detected by ELISA. RESULTS LPS induced inflammatory injury showing as notably decreased the viability, while increased the numbers of apoptotic cells, as well as the levels of apoptosis and inflammatory factors in a dose dependent way. Besides, LPS inducement remarkably enhanced the expression of circZNF652. However, knockdown of circZNF652 remitted LPS-triggered inflammatory damage and restrained NF-κB and JNK/p38 pathways. Moreover, circZNF652 knockdown promoted miR-181a expression. Whereas, miR-181a inhibition markedly relieved circZNF652 knockdown-induced impacts. CONCLUSION Knockdown of circZNF652 remitted LPS-triggered WI-38 cells inflammatory damage through deactivation of NF-κB and JNK/p38pathways by up-regulating miR-181a.
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Affiliation(s)
- Xiuxia Liu
- Department of Pediatrics, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Peifeng Zhao
- Department of Pediatrics, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Wang Ge
- Department of Family Planning Technial Service, Jining Maternal and Child Health Family Planning Service Center, Jining, Shandong, China
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Zang L, Song Y, Yu F, Liu X. Emodin relieved lipopolysaccharide-evoked inflammatory damage in WI-38 cells by up-regulating taurine up-regulated gene 1. Biofactors 2020; 46:860-868. [PMID: 31912578 DOI: 10.1002/biof.1609] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/19/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND Neonatal pneumonia (NP) has a high fatality rate in neonatal illness. This research investigated the functions of emodin on lipopolysaccharide (LPS)-evoked inflammatory injury in WI-38 cells. METHODS Cell counting kit-8 (CCK-8) assay and flow cytometry were utilized for examining the impacts of LPS and emodin on viability and apoptosis, respectively. Taurine up-regulated gene 1 (TUG1) level was altered through cell transfection and investigated by reverse transcription quantitative polymerase chain reaction (RT-qPCR). Moreover, RT-qPCR, western blot and enzyme-linked immunosorbent assay (ELISA) were utilized for investigating expressions of monocyte chemoattractant protein-1 (MCP-1) and interleukin (IL)-6. Western blot was carried out for investigating the levels of Bcl-2, Bax, pro-Caspase-3, cleaved-Caspase-3 and NF-κB and p38MAPK pathway-related proteins. RESULTS LPS treatment restrained cell viability, enhanced apoptosis, and expressions of inflammation-related IL-6 and MCP-1. Emodin alleviated LPS-evoked inflammatory injury and restrained the NF-κB and p38MAPK pathways. Furthermore, emodin positively regulated TUG1 expression and TUG1 silencing could reverse the efficacy of emodin on IL-6 and MCP-1 expressions. Finally, TUG1 regulates the expression of inflammatory factors through NF-κB and p38MAPK pathways. CONCLUSION Emodin alleviated LPS-evoked inflammatory injury by raising TUG1 expression via NF-κB and p38MAPK pathways in WI-38 cells.
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Affiliation(s)
- Linlin Zang
- Department of Clinical Laboratory, The Affiliated Qingdao Hiser Hospital of Qingdao University (Qingdao Hospital of Traditional Chinese Medicine), Qingdao, China
| | - Yongqing Song
- Department of Pharmaceutical, Binzhou People's Hospital, Binzhou, Shandong, China
| | - Fengying Yu
- Department of Pharmaceutical, Binzhou People's Hospital, Binzhou, Shandong, China
| | - Xiuxia Liu
- Department of Pediatrics, Jining No.1 People's Hospital, Jining, Shandong, China
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12
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Elean M, Albarracín L, Cataldo PG, Londero A, Kitazawa H, Saavedra L, Villena J, Hebert EM. New immunobiotics from highly proteolytic Lactobacillus delbrueckii strains: their impact on intestinal antiviral innate immune response. Benef Microbes 2020; 11:375-390. [PMID: 32755264 DOI: 10.3920/bm2019.0198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Proteolytic starter cultures with intrinsic immunomodulatory activities are desirably features for the development of functional foods, which would significantly reduce the cost of their production (one-strain starter) having an additional beneficial effect on the host. In this work, Lactobacillus delbrueckii strains were selected according to their ability to efficiently hydrolyse β-casein and to modulate the immune system. Among 36 strains evaluated, the highest proteolytic activities were found for L. delbrueckii subsp. lactis CRL581 and L. delbrueckii subsp. bulgaricus CRL656. The immunomodulatory effect of both strains and their β-casein hydrolysates (CRL581 and CRL656 hydrolysates, respectively) were studied in a murine model. Balb/c mice were fed lactobacilli or their hydrolysates for three days. One day after the last lactobacilli or hydrolysate treatments, mice were challenged with the Toll-like receptor 3 (TLR3) agonist poly(I:C) by intraperitoneal injection. Before and after poly(I:C) challenge the phagocytic and microbicidal activity of peritoneal macrophages, intestinal immunoglobulin A (IgA), cytokine profile, and histological analysis of the intestine were analysed. L. delbrueckii subsp. lactis CRL581 significantly increased the activation of peritoneal macrophages as well as the levels of intestinal IgA, interleukin (IL)-10 and interferon (IFN)-γ when compared to untreated controls. In addition, the CRL581 strain was able to significantly reduce the intestinal inflammatory damage triggered by TLR3 activation. L. delbrueckii CRL581 increased the levels of IL-10, IFN-γ and IFN-β, and reduced tumour necrosis factor alpha and IL-6 concentrations in the intestine of poly(I:C)-challenged mice. No immunomodulatory effects were observed for the CRL656 strain or for the CRL581 or CRL656 hydrolysates. The results of this work show that the technologically relevant and high proteolytic strain L. delbrueckii CRL581 is able to beneficially modulate the intestinal innate antiviral immune response. Although further studies with the CRL581 strain are required to corroborate and deepen its immunological effects, this bacterium is an interesting alternative for the development of new functional foods with antiviral capabilities.
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Affiliation(s)
- M Elean
- Reference Centre for Lactobacilli (CERELA-CONICET), Calle Batalla de Chacabuco 145, Tucuman, 4000, Argentina
| | - L Albarracín
- Reference Centre for Lactobacilli (CERELA-CONICET), Calle Batalla de Chacabuco 145, Tucuman, 4000, Argentina.,Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 984-0051, Japan
| | - P G Cataldo
- Reference Centre for Lactobacilli (CERELA-CONICET), Calle Batalla de Chacabuco 145, Tucuman, 4000, Argentina
| | - A Londero
- Instituto de Genética Veterinaria 'Ing. Fernando Noel Dulout', Universidad Nacional de La Plata, La Plata, Argentina
| | - H Kitazawa
- Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 984-0051, Japan.,Livestock Immunology Unit, International Education and Research Center for Food Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai, 984-0051, Japan
| | - L Saavedra
- Reference Centre for Lactobacilli (CERELA-CONICET), Calle Batalla de Chacabuco 145, Tucuman, 4000, Argentina
| | - J Villena
- Reference Centre for Lactobacilli (CERELA-CONICET), Calle Batalla de Chacabuco 145, Tucuman, 4000, Argentina.,Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, 984-0051, Japan
| | - E M Hebert
- Reference Centre for Lactobacilli (CERELA-CONICET), Calle Batalla de Chacabuco 145, Tucuman, 4000, Argentina
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Zhang N, Zhong Z, Wang Y, Yang L, Wu F, Peng C, Huang W, He G. Competing endogenous network analysis identifies lncRNA Meg3 activates inflammatory damage in UVB induced murine skin lesion by sponging miR-93-5p/epiregulin axis. Aging (Albany NY) 2019; 11:10664-83. [PMID: 31761787 DOI: 10.18632/aging.102483] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 11/08/2019] [Indexed: 02/05/2023]
Abstract
In this study, we obtained the RNA expression data of murine skin tissues of control, and UVB irradiated groups. After the re-annotation of lncRNAs, a gene expression similarity analysis was done by WGCNA. The target mRNA prediction of lncRNAs, miRNAs, and ceRNA regulatory networks were constructed by five lncRNAs, 14 miRNAs and 54 mRNAs, respectively. Based on the ceRNA network of UVB-induced skin lesions, it was evident that the dysregulation of Meg3 has critical effects on the UVB-induced inflammatory lesion of murine skin tissues. The overexpression of Meg3 after UVB irradiation was observed in primary murine skin fibroblasts, and the up-regulated Meg3 expression was related to the activation of the inflammatory cytokines. These functional experiments demonstrated that the RNA silencing of Meg3 in murine skin fibroblasts could suppress the expression of the cytokines (in vitro) and UVB-induced skin lesions (in vivo). Moreover, the Meg3 functioned as a competing endogenous RNA (ceRNA) that acted as a sponge for miR-93-5p and thereby modulated the expression of Epiregulin (Ereg). Our results proved that Meg3 was involved in UVB-induced skin inflammation and that the ceRNA networks, which includes miR-93-5p and Ereg, could prove to be a potential therapeutic target for UVB-induced skin damage.
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Wang Q, Tao S, Zhu N, Li T, Yu L. Silencing circular RNA circANKRD36 remits lipopolysaccharide-induced inflammatory damage by regulating microRNA-15/MyD88. J Cell Biochem 2019; 121:2704-2712. [PMID: 31692058 DOI: 10.1002/jcb.29490] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/10/2019] [Indexed: 12/18/2022]
Abstract
Bedsore is a familiar disease, which fearfully harms the health of the patients. We investigated the efficacy and mechanism of circular RNA circANKRD36 on HaCaT cell in inflammatory damage. CCK-8 and flow cytometry were respectively used to investigate the efficacies of lipopolysaccharide (LPS), circANKRD36, and microRNA (miR)-15 on cell viability and apoptosis. Moreover, circANKRD36 and miR-15 expression were changed by cell transfection and investigated by reverse transcription-quantitative polymerase chain reaction. Furthermore, the levels of Bax, pro caspase-3, cleaved caspase-3, interleukin (IL)-1β, IL-6, and proteins of the pathway were investigated by Western blot. Otherwise, the levels of IL-1β and IL-6 were investigated by enzyme-linked immunosorbent assay. Reactive oxygen species (ROS) was investigated by ROS assay. The relation between myeloid differentiation factor 88 (MyD88) and miR-15 was investigated by luciferase assay. LPS caused inflammatory damage and upregulated circANKRD36. circANKRD36 was silenced in cells and si-circANKRD36 remitted inflammatory damage. Furthermore, si-circANKRD36 negatively regulated miR-15 and miR-15 inhibitor could reverse the efficacies of si-circANKRD36. Besides, si-circANKRD36 restrained the NF-κB pathway by upregulating miR-15. Finally, MyD88 was authenticated as a target of miR-15. circANKRD36 remitted cell inflammatory damage upregulating miR-15/MyD88 via the NF-κB pathway in HaCaT cells.
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Affiliation(s)
- Qiaoyan Wang
- Department of Hepatopathy II, Qingdao No. 6 People's Hospital, Qingdao, China
| | - Shujun Tao
- Department of Hepatopathy II, Qingdao No. 6 People's Hospital, Qingdao, China
| | - Nan Zhu
- Department of Hepatopathy II, Qingdao No. 6 People's Hospital, Qingdao, China
| | - Tingting Li
- Department of Hepatopathy II, Qingdao No. 6 People's Hospital, Qingdao, China
| | - Lingling Yu
- Department of Hepatopathy X, Qingdao No. 6 People's Hospital, Qingdao, China
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15
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Tang S, Han J, Jiao H, Si J, Liu Y, Wang J. Long noncoding RNA MEG3 deteriorates inflammatory damage by downregulating microRNA-101a. J Cell Biochem 2019; 121:1801-1810. [PMID: 31633219 DOI: 10.1002/jcb.29415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 10/08/2019] [Indexed: 12/17/2022]
Abstract
Valvulopathy is a familiar heart disease, which fearfully harms the health of the body. We studied the effects and mechanism of long noncoding RNA maternally expressed gene 3 (lncMEG3) on MVICs cell in inflammatory damage. Cell Counting Kit-8 and flow cytometry were respectively used to detect the effect of tumor necrosis factor α (TNF-α), MEG3 and microRNA (miR)-101a on cell viability and apoptosis. Moreover, MEG3 and miR-101a expression were changed by cell transfection and investigated by reverse transcription-quantitative polymerase chain reaction. Furthermore, Western blot was used to investigate the levels of Bax, pro-caspase-3, cleaved-caspase-3, pro-caspase-9, cleaved-caspase-9, interleukin (IL)-1β, IL-6 and related-proteins of cell pathways. Otherwise, the levels of IL-1β and IL-6 were also investigated by enzyme-linked immunosorbent assay kit. Reactive oxygen species (ROS) was examined by ROS assay. We found TNF-α caused inflammatory damage and upregulated MEG3. MEG3 was overexpressed and silenced in cells. Besides, MEG3 deteriorated inflammatory damage. Furthermore, MEG3 negatively regulated miR-101a and miR-101a mimic could reverse the effect of pc-MEG3. Besides, MEG3 enhanced the JNK and NF-κB pathways by downregulating miR-101a. In conclusion, MEG3 deteriorated cell inflammatory damage by downregulating miR-101a via JNK and NF-κB pathways.
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Affiliation(s)
- Shouyi Tang
- Department of Cardiology, Heze Municipal Hospital, Heze, Shandong, China
| | - Junxia Han
- Department of Cardiology, Heze Municipal Hospital, Heze, Shandong, China
| | - Hui Jiao
- Department of Cardiology, Heze Municipal Hospital, Heze, Shandong, China
| | - Jingna Si
- Department of Cardiovascular Surgery, Heze Municipal Hospital, Heze, Shandong, China
| | - Yingying Liu
- Department of Cardiology, Heze Municipal Hospital, Heze, Shandong, China
| | - Jinlong Wang
- Department of Cardiology, Heze Municipal Hospital, Heze, Shandong, China
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16
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Ma W, Li C, Zhao L, Wang Y, Xiao R. NF-κB-mediated inflammatory damage is differentially affected in SH-SY5Y and C6 cells treated with 27-hydroxycholesterol. Food Sci Nutr 2019; 7:1685-1694. [PMID: 31139381 PMCID: PMC6526694 DOI: 10.1002/fsn3.1005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 03/03/2019] [Accepted: 03/07/2019] [Indexed: 12/12/2022] Open
Abstract
Previous studies have demonstrated that 27-hydroxycholesterol (27-OHC), a cholesterol metabolite, was involved in the inflammatory process of Alzheimer's disease (AD). The present study aimed to investigate the 27-OHC-induced inflammatory damage to neurons and astrocytes and the underlying mechanism(s) accounting for this damage. Human neuroblastoma cells (SH-SY5Y cells) and rat glioma cells (C6 cells) were treated with vehicle or 27-OHC (5, 10, or 20 μM) for 24 hr. The levels of secreted interleukin-1β (IL-1β), interleukin-10 (IL-10), tumor necrosis factor alpha (TNF-α), and inducible nitric oxide synthase (iNOS) were determined by using an enzyme-linked immunosorbent assay (ELISA). Immunofluorescence staining was used to determine the cellular expression of toll-like receptor 4 (TLR4) and transforming growth factor-β (TGF-β). The mRNA and protein expression levels of nuclear factor-κB p65 (NF-κB p65), nuclear factor-κB p50 (NF-κB p50) and cyclooxygenase-2 (COX-2) in both SH-SY5Y and C6 cells were also detected by real-time PCR and Western blot, respectively. The results of this study showed that 27-OHC treatment increased secretion of TNF-α and iNOS and decreased secretion of IL-10, upregulated expression of TGF-β, NF-κB p65 and p50, and downregulated expression of COX-2 in SH-SY5Y cells. In C6 cells, treatment with 27-OHC resulted in decreased secretion of IL-1β, IL-10, TNF-α, and iNOS, and increased expression of TLR4 and TGF-β. These results suggest that 27-OHC may cause inflammatory damage to neurons by activating the TGF-β/NF-κB signaling pathway and to astrocytes by activating the TLR4/TGF-β signaling, which results in the subsequent release of inflammatory cytokines.
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Affiliation(s)
- Wei‐Wei Ma
- Beijing Key Laboratory of Environmental Toxicology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Chao‐Qun Li
- Beijing Key Laboratory of Environmental Toxicology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Lei Zhao
- Department of Molecular Physiology and Biophysics, Holden Comprehensive Cancer CenterUniversity of Iowa Carver College of MedicineIowa CityIowa
| | - Yu‐Shan Wang
- Beijing Key Laboratory of Environmental Toxicology, School of Public HealthCapital Medical UniversityBeijingChina
| | - Rong Xiao
- Beijing Key Laboratory of Environmental Toxicology, School of Public HealthCapital Medical UniversityBeijingChina
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Kawade N, Tokuda Y, Tsujino S, Aoyama H, Kobayashi M, Murai A, Horio F. Dietary Intake of Ascorbic Acid Attenuates Lipopolysaccharide-Induced Sepsis and Septic Inflammation in ODS Rats. J Nutr Sci Vitaminol (Tokyo) 2019; 64:404-411. [PMID: 30606963 DOI: 10.3177/jnsv.64.404] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The aim of this study was to verify the protective effects of ascorbic acid (AsA) against lipopolysaccharide (LPS)-induced sepsis. The study was conducted using osteogenic disorder Shionogi (ODS) rats, which are unable to synthesize AsA. Male ODS rats (6 wk old) were fed either an AsA-free diet (AsA-deficient group), a diet supplemented with 300 mg/kg AsA (control group), or a diet supplemented with 3,000 mg/kg AsA (high-AsA group) for 8 d. On day 8, all the rats were intraperitoneally injected with LPS (15 mg/kg body weight). Forty-eight hours after the injection, the survival rates of the rats in the control (39%) and the high-AsA (61%) groups were significantly higher than that in the AsA-deficient group (5.5%). Next, we measured several inflammatory parameters during 10 h after administering LPS. At 6 h, elevated serum levels of markers for hepatic and systemic injuries were suppressed in rats fed AsA. Similarly, 10 h after LPS injection, the elevation in the serum levels of markers for renal injury were also suppressed proportionally to the amount of AsA in the diet. The elevated serum concentrations of TNFα and IL-1β by LPS in the AsA-deficient group decreased in groups fed AsA. Hematic TNFα mRNA levels at 6 h after the LPS injection were also lowered by feeding AsA. These results demonstrated that the dietary intake of AsA improved the survival rates and suppressed the inflammatory damage, in a dose-dependent manner, caused during sepsis induced by LPS in ODS rats.
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Affiliation(s)
- Noe Kawade
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University
| | - Yuki Tokuda
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University
| | - Shogo Tsujino
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University
| | - Hiroaki Aoyama
- Toxicology Division, Institute of Environmental Toxicology
| | - Misato Kobayashi
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University
| | - Atsushi Murai
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University
| | - Fumihiko Horio
- Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University
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Abdelhalim MAK, Qaid HA, Al-Mohy Y, Al-Ayed MS. Effects of quercetin and arginine on the nephrotoxicity and lipid peroxidation induced by gold nanoparticles in vivo. Int J Nanomedicine 2018; 13:7765-7770. [PMID: 30538457 PMCID: PMC6257179 DOI: 10.2147/ijn.s183281] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION This study aimed to evaluate the nephrotoxicity caused by gold nanoparticles (GNPs) and investigate the potential roles of quercetin (Qur) and arginine (Arg) in mitigating the inflammatory kidney damage and dysfunction and inhibiting the toxicity induced by GNPs in rats. METHODS Kidney function was assessed using various serum biomarkers, including blood urea nitrogen (BUN), uric acid (URIC), and creatinine (CR), while toxicity was evaluated by measuring the biomarkers glutathione (GSH) and malondialdehyde (MDA) in kidney tissues. RESULTS Administration of GNPs to the rats severely affected the serum kidney biomarkers, as confirmed by the notable increases in BUN, URIC, and CR. Substantial changes in the levels of the biomarkers MDA and GSH in the kidney tissues were also observed, with a reduced level of GSH and elevated MDA activity. The administration of Qur or Arg exerted a protective effect against GNP-induced inflammatory kidney damage and toxicity, but with different responses according to their evaluated normalized values. CONCLUSION This study demonstrates the beneficial effects of supplementation with Qur or Arg during the treatment with GNPs, potentially providing a powerful tool for cancer therapy.
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Affiliation(s)
| | - Huda Ay Qaid
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabia, ;
| | - Yanallah Al-Mohy
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabia, ;
| | - Mohammed Suliman Al-Ayed
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabia, ;
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Yang DW, Zhang X, Qian GB, Jiang MJ, Wang P, Wang KZ. Downregulation of long noncoding RNA LOC101928134 inhibits the synovial hyperplasia and cartilage destruction of osteoarthritis rats through the activation of the Janus kinase/signal transducers and activators of transcription signaling pathway by upregulating IFNA1. J Cell Physiol 2018; 234:10523-10534. [PMID: 30456844 DOI: 10.1002/jcp.27730] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 10/16/2018] [Indexed: 12/29/2022]
Abstract
Osteoarthritis (OA) is the most common disease of arthritis, a chronic joint disease that is always correlated with massive destruction such as cartilage destruction, inflammation of the synovial membrane, and so on. This study aims to explore the role of long noncoding RNA (lncRNA) LOC101928134 in the synovial hyperplasia and cartilage destruction, more specifically, in the Janus kinase/signal transducers and activators of transcription (JAK/STAT) signaling pathway in an OA rat model. Microarray-based gene expression analysis was conducted to screen out the lncRNA differentially expressed in OA and predict the target gene of the lncRNA with the involvement of the signaling pathway through Kyoto encyclopedia of genes and genomes (KEGG) analysis. A model of OA was established and treated with the small interfering RNA LOC101928134/inhibitor of JAK/STAT signaling pathway to investigate the relationship among LOC101928134, IFNA1, and the JAK/STAT signaling pathway in OA. The effect of LOC101928134 on the serum levels of IFNA1, interleukin-1β, and tumor necrosis factor-α, and the apoptosis of synovial and cartilage cells was evaluated. LOC101928134, which was found to be highly expressed in knee joint synovial tissues of OA rats, regulated the expression of IFNA1 gene and inhibited JAK/STAT signaling pathway. Downregulation of LOC101928134 resulted in reduced knee joint synovitis, relived inflammatory damage, and knee joint cartilage damage of OA rats. Besides, synovial cell apoptosis was enhanced upon LOC101928134 downregulation, while cartilage cell apoptosis of OA rats was suppressed. These results demonstrate that downregulation of LOC101928134 suppresses the synovial hyperplasia and cartilage destruction of OA rats via activation of JAK/STAT signaling pathway by upregulating IFNA1, providing a new candidate for the treatment of OA.
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Affiliation(s)
- Da-Wei Yang
- Department of Orthopaedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xin Zhang
- Department of Orthopaedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Gui-Bin Qian
- Department of Orthopaedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ming-Jiu Jiang
- Department of Orthopaedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Peng Wang
- Department of Orthopaedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Kun-Zheng Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Li Y, Zhang X, Yang W, Li C, Chu Y, Jiang H, Shen Z. Mechanism of the protective effects of the combined treatment with rhynchophylla total alkaloids and sinapine thiocyanate against a prothrombotic state caused by vascular endothelial cell inflammatory damage. Exp Ther Med 2017; 13:3081-3088. [PMID: 28587383 DOI: 10.3892/etm.2017.4357] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 01/26/2017] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to investigate the effect and the underlying mechanism of the combined treatment of rhynchophylla total alkaloids (RTA) and sinapine thiocyanate for protection against a prothrombotic state (PTS) associated with the tumor necrosis factor-alpha (TNF-α)-induced inflammatory injury of vascular endothelial cells (VECs). A TNF-α-induced VEC inflammatory injury model was established, and cell morphology of VECs was evaluated using scanning electron microscopy. In addition, reverse transcription-quantitative polymerase chain reaction and western blot analysis were performed to examine the mRNA and protein expression of coagulation-related factors, including nuclear factor-κB (NF-κB), transforming growth factor-β1 (TGF-β1), tissue factor (TF), plasminogen activator inhibitor (PAI-1), protease-activation receptors (PAR-1) and protein kinase C (PKC-α) in VECs. Combined treatment with RTA and sinapine thiocyanate was demonstrated to reduce, to a varying extent, the mRNA and protein expression of NF-κB, TGF-β1, TF, PAR-1, PKC-α and PAI-1. Furthermore, combined treatment with RTA and sinapine thiocyanate was able to downregulate the expression of coagulation-related factors in injured VECs, thereby inhibiting the PTS induced by vascular endothelial injury. The underlying mechanism is partially associated with the TF-mediated activation of the thrombin-receptor signaling pathway that suppresses coagulation during inflammation and balances fibrinolysis in order to inhibit fibrin generation and deposition.
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Affiliation(s)
- Yunlun Li
- Department of Cardiology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250014, P.R. China
| | - Xinya Zhang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250000, P.R. China
| | - Wenqing Yang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250000, P.R. China
| | - Chao Li
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250000, P.R. China
| | - Yanjun Chu
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250000, P.R. China
| | - Haiqiang Jiang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250000, P.R. China
| | - Zhenzhen Shen
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250000, P.R. China
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Kato Y. Neutrophil myeloperoxidase and its substrates: formation of specific markers and reactive compounds during inflammation. J Clin Biochem Nutr 2016; 58:99-104. [PMID: 27013775 PMCID: PMC4788398 DOI: 10.3164/jcbn.15-104] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/12/2015] [Indexed: 12/02/2022] Open
Abstract
Myeloperoxidase is an inflammatory enzyme that generates reactive hypochlorous acid in the presence of hydrogen peroxide and chloride ion. However, this enzyme also uses bromide ion or thiocyanate as a substrate to form hypobromous or hypothiocyanous acid, respectively. These species play important roles in host defense against the invasion of microorganisms. In contrast, these enzyme products modify biomolecules in hosts during excess inflammation, indicating that the action of myeloperoxidase is both beneficial and harmful. Myeloperoxidase uses other endogenous compounds, such as serotonin, urate, and l-tyrosine, as substrates. This broad-range specificity may have some biological implications. Target molecules of this enzyme and its products vary, including low-molecular weight thiols, proteins, nucleic acids, and lipids. The modified products represent biomarkers of myeloperoxidase action. Moderate inhibition of this enzyme might be critical for the prevention/modulation of excess, uncontrolled inflammatory events. Some phytochemicals inhibit myeloperoxidase, which might explain the reductive effect caused by the intake of vegetables and fruits on cardiovascular diseases.
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Affiliation(s)
- Yoji Kato
- School of Human Science and Environment, University of Hyogo, 1-1-12 Shinzaike-honcho, Himeji, Hyogo 670-0092, Japan; Research Institute of Food and Nutritional Science, University of Hyogo, 1-1-12 Shinzaike-honcho, Himeji, Hyogo 670-0092, Japan
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