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Stanisavljević S, Stegnjaić G, Jevtić B, Dimitrijević M, Miljković Đ, Lavrnja I, Nikolovski N. NRF2 Plays a Crucial Role in the Tolerogenic Effect of Ethyl Pyruvate on Dendritic Cells. Int J Mol Sci 2024; 25:6195. [PMID: 38892383 PMCID: PMC11173132 DOI: 10.3390/ijms25116195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/24/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024] Open
Abstract
Ethyl pyruvate (EP) is a redox-active compound that has been previously shown to be effective in restraining immune hyperactivity in animal models of various autoimmune and chronic inflammatory diseases. Importantly, EP has also been proven to have a potent tolerogenic effect on dendritic cells (DCs). Here, the influence of EP on the signaling pathways in DCs relevant for their tolerogenicity, including anti-inflammatory NRF2 and pro-inflammatory NF-κB, was explored. Specifically, the effects of EP on DCs obtained by GM-CSF-directed differentiation of murine bone marrow precursor cells and matured under the influence of lipopolysaccharide (LPS) were examined via immunocytochemistry and RT-PCR. EP counteracted LPS-imposed morphological changes and down-regulated the LPS-induced expression of pro-inflammatory mediators in DCs. While it reduced the activation of NF-κB, EP potentiated NRF2 and downstream antioxidative molecules, thus implying the regulation of NRF2 signaling pathways as the major reason for the tolerizing effects of EP on DCs.
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Affiliation(s)
- Suzana Stanisavljević
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia; (S.S.); (G.S.); (B.J.); (M.D.); (N.N.)
| | - Goran Stegnjaić
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia; (S.S.); (G.S.); (B.J.); (M.D.); (N.N.)
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia; (S.S.); (G.S.); (B.J.); (M.D.); (N.N.)
| | - Mirjana Dimitrijević
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia; (S.S.); (G.S.); (B.J.); (M.D.); (N.N.)
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia; (S.S.); (G.S.); (B.J.); (M.D.); (N.N.)
| | - Irena Lavrnja
- Department of Neurobiology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia;
| | - Neda Nikolovski
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia; (S.S.); (G.S.); (B.J.); (M.D.); (N.N.)
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Lupancu TJ, Lee KM, Eivazitork M, Hor C, Fleetwood AJ, Cook AD, Olshansky M, Turner SJ, de Steiger R, Lim K, Hamilton JA, Achuthan AA. Epigenetic and transcriptional regulation of CCL17 production by glucocorticoids in arthritis. iScience 2023; 26:108079. [PMID: 37860753 PMCID: PMC10583050 DOI: 10.1016/j.isci.2023.108079] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 08/17/2023] [Accepted: 09/25/2023] [Indexed: 10/21/2023] Open
Abstract
Glucocorticoids (GCs) are potent anti-inflammatory agents and are broadly used in treating rheumatoid arthritis (RA) patients, albeit with adverse side effects associated with long-term usage. The negative consequences of GC therapy provide an impetus for research into gaining insights into the molecular mechanisms of GC action. We have previously reported that granulocyte-macrophage colony-stimulating factor (GM-CSF)-induced CCL17 has a non-redundant role in inflammatory arthritis. Here, we provide molecular evidence that GCs can suppress GM-CSF-mediated upregulation of IRF4 and CCL17 expression via downregulating JMJD3 expression and activity. In mouse models of inflammatory arthritis, GC treatment inhibited CCL17 expression and ameliorated arthritic pain-like behavior and disease. Significantly, GC treatment of RA patient peripheral blood mononuclear cells ex vivo resulted in decreased CCL17 production. This delineated pathway potentially provides new therapeutic options for the treatment of many inflammatory conditions, where GCs are used as an anti-inflammatory drug but without the associated adverse side effects.
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Affiliation(s)
- Tanya J. Lupancu
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Kevin M.C. Lee
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Mahtab Eivazitork
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Cecil Hor
- Department of Medicine, Western Health, The University of Melbourne, St Albans, VIC 3021, Australia
| | - Andrew J. Fleetwood
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC 3052, Australia
- Haematopoiesis and Leukocyte Biology, Baker IDI Heart and Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Andrew D. Cook
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Moshe Olshansky
- Department of Microbiology, Monash University, Clayton, VIC 3800, Australia
| | - Stephen J. Turner
- Department of Microbiology, Monash University, Clayton, VIC 3800, Australia
| | - Richard de Steiger
- Department of Surgery, Epworth HealthCare, The University of Melbourne, Richmond, VIC 3121, Australia
| | - Keith Lim
- Department of Medicine, Western Health, The University of Melbourne, St Albans, VIC 3021, Australia
| | - John A. Hamilton
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Adrian A. Achuthan
- Department of Medicine, Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC 3052, Australia
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Khelfi A, Oussedik-Oumehdi H, Laraba-Djebari F. Therapeutic Outcome of Anti-inflammatory and Antioxidative Medicines on the Dermonecrotic Activity of Cerastes cerastes Venom. Inflammation 2022; 45:1700-1719. [DOI: 10.1007/s10753-022-01654-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 12/01/2022]
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Pan X, Shao Y, Wang F, Cai Z, Liu S, Xi J, He R, Zhao Y, Zhuang R. Protective effect of apigenin magnesium complex on H 2O 2-induced oxidative stress and inflammatory responses in rat hepatic stellate cells. PHARMACEUTICAL BIOLOGY 2020; 58:553-560. [PMID: 32544362 PMCID: PMC8641681 DOI: 10.1080/13880209.2020.1772840] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Context: Apigenin displays antioxidant and anti-inflammatory effects. However, effects of apigenin magnesium (AM) complex on these aspects remain unknown.Objective: This study investigated the effects of AM complex on oxidative stress and inflammatory responses in hydrogen peroxide (H2O2)-induced rat hepatic stellate cells (HSCs).Materials and methods: The antioxidant and anti-inflammatory effects of AM complex at concentrations of 0.625, 1.25, and 2.5 mg/mL were evaluated, comparing to HSCs treated by H2O2 alone. Cell viability, reactive oxygen species (ROS), the activity of superoxide dismutase (SOD), glutathione (GSH), malondialdehyde (MDA), nitric oxide (NO), interleukin 6 (IL-6), and nuclear factor-kappa B (NF-κB) levels were measured. Moreover, cell apoptosis, mRNA expression levels of transforming growth factor-β (TGF-β), NF-κB, and inducible nitric oxide synthase (iNOS) were assessed.Results: AM complex significantly inhibited oxidative stress and inflammatory response at concentrations of 0.625, 1.25, and 2.5 mg/mL (IC50 = 1.679 mg/mL). AM complex elevated the survival rate of H2O2-treated HSCs and had no toxic effects on HSCs. AM complex also promoted SOD activity and GSH levels but suppressed ROS, MDA, and NO levels. Additionally, AM complex decreased IL-6 and NF-κB levels, gene expression of TGF-β, NF-κB, and iNOS, as well as induced apoptosis of HSCs.Discussion and conclusions: Data indicated that AM complex mitigated oxidative stress and inflammatory responses on H2O2-treated HSCs, suggesting that AM complex is a possible candidate for anti-hepatic diseases. Additional efforts, both in vivo and in humans, are required to assess of AM complex as a potential therapeutic drug in liver diseases.
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Affiliation(s)
- Xuwang Pan
- Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Yidan Shao
- Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Fugen Wang
- Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Zhaobin Cai
- Department of Liver Disease, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Shourong Liu
- Department of Liver Disease, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Jianjun Xi
- Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Ruoyu He
- Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Yanmei Zhao
- Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
| | - Rangxiao Zhuang
- Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, Hangzhou, Zhejiang, China
- CONTACT Rangxiao Zhuang Department of Pharmaceutical Preparation, Hangzhou Xixi Hospital, 2, Hengbu Road, Hangzhou, Zhejiang, 310023, China
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Mohd Nasir NA, Agarwal R, Krasilnikova A, Sheikh Abdul Kadir SH, Iezhitsa I. Effect of dexamethasone on the expression of MMPs, adenosine A1 receptors and NFKB by human trabecular meshwork cells. J Basic Clin Physiol Pharmacol 2020; 31:jbcpp-2019-0373. [PMID: 32697755 DOI: 10.1515/jbcpp-2019-0373] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 04/18/2020] [Indexed: 12/28/2022]
Abstract
Objectives Steroid-induced ocular hypertension and glaucoma are associated with extracellular matrix remodeling at the trabecular meshwork (TM) of the eye due to reduced secretion of matrix metalloproteinases (MMPs), a family of enzymes regulating extracellular matrix proteolysis. Several biological functions of steroids are known to involve regulation of adenosine A1 receptors (A1AR) and nuclear factor kappa B (NFKB). Since MMPs expression in TM has been shown to be regulated by A1AR as well as transcription factors, it is likely that dexamethasone-induced changes in aqueous humor dynamics involve reduced MMP and A1AR expression and reduced NFKB activation. Hence, the current study investigated the association of dexamethasone-induced reduction in MMP secretion with reduced NFKB activation and A1AR expression. Methods Human trabecular meshwork cells (HTMCs) were characterized by estimating myocilin and alpha smooth muscle actin expression and then were treated with dexamethasone 100 nM for 2, 5 and 7 days. The MMP secretion was estimated in culture media using Western blot. Immunocytochemistry (ICC) and ELISA were done to investigate the effect of dexamethasone on NFKB phosphorylation. A1AR expression in HTMCs was determined using Western blot and ELISA. Results Dexamethasone caused a significant reduction in both MMP-2 and -9 expression compared to untreated group after five and seven days but not after two days of culture. Significantly reduced phosphorylated NFKB and A1AR protein levels were detected in dexamethasone treated compared to vehicle treated HTMCs after five days of culture. Conclusions Dexamethasone reduces MMP-2 and -9 secretion by HTMCs and this effect of dexamethasone is associated with reduced NFKB phosphorylation and A1AR expression.
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Affiliation(s)
- Normie Aida Mohd Nasir
- Center for Neuroscience Research, Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia.,Institute of Medical Molecular Biotechnology (IMMB), Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia
| | - Renu Agarwal
- International Medical University, Bukit Jalil, Kuala Lumpur, Malaysia
| | - Anna Krasilnikova
- Center for Neuroscience Research, Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia.,Department of Clinical Pharmacology & Intensive Care, Volgograd State Medical University, Volgograd, Russia
| | - Siti Hamimah Sheikh Abdul Kadir
- Center for Neuroscience Research, Faculty of Medicine, Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia.,Institute of Medical Molecular Biotechnology (IMMB), Universiti Teknologi MARA (UiTM), Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia
| | - Igor Iezhitsa
- International Medical University, Bukit Jalil, Kuala Lumpur, Malaysia
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Xu C, Zhao J, Gong Q, Chen S. Sustained release of vancomycin from bacterial cellulose membrane as dural substitutes for anti-inflammatory wound closure in rabbits. J Biomater Appl 2020; 34:1470-1478. [PMID: 32070189 DOI: 10.1177/0885328220908027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Chen Xu
- Shanghai Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, China
| | - Jianwei Zhao
- Shanghai Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, China
| | - Qiuyuan Gong
- Shanghai Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, China
| | - Shiwen Chen
- Shanghai Sixth People's Hospital, Shanghai JiaoTong University, Shanghai, China
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Tapp ZM, Godbout JP, Kokiko-Cochran ON. A Tilted Axis: Maladaptive Inflammation and HPA Axis Dysfunction Contribute to Consequences of TBI. Front Neurol 2019; 10:345. [PMID: 31068886 PMCID: PMC6491704 DOI: 10.3389/fneur.2019.00345] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 03/20/2019] [Indexed: 12/16/2022] Open
Abstract
Each year approximately 1.7 million people sustain a traumatic brain injury (TBI) in the US alone. Associated with these head injuries is a high prevalence of neuropsychiatric symptoms including irritability, depression, and anxiety. Neuroinflammation, due in part to microglia, can worsen or even cause neuropsychiatric disorders after TBI. For example, mounting evidence demonstrates that microglia become “primed” or hyper-reactive with an exaggerated pro-inflammatory phenotype following multiple immune challenges. Microglial priming occurs after experimental TBI and correlates with the emergence of depressive-like behavior as well as cognitive dysfunction. Critically, immune challenges are various and include illness, aging, and stress. The collective influence of any combination of these immune challenges shapes the neuroimmune environment and the response to TBI. For example, stress reliably induces inflammation and could therefore be a gateway to altered neuropathology and behavioral decline following TBI. Given the increasing incidence of stress-related psychiatric disorders after TBI, the degree in which stress affects outcome is of particular interest. This review aims to highlight the role of the hypothalamic-pituitary-adrenal (HPA) axis as a key mediator of stress-immune pathway communication following TBI. We will first describe maladaptive neuroinflammation after TBI and how stress contributes to inflammation through both anti- and pro-inflammatory mechanisms. Clinical and experimental data describing HPA-axis dysfunction and consequences of altered stress responses after TBI will be discussed. Lastly, we will review common stress models used after TBI that could better elucidate the relationship between HPA axis dysfunction and maladaptive inflammation following TBI. Together, the studies described in this review suggest that HPA axis dysfunction after brain injury is prevalent and contributes to the dynamic nature of the neuroinflammatory response to brain injury. Experimental stressors that directly engage the HPA axis represent important areas for future research to better define the role of stress-immune pathways in mediating outcome following TBI.
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Affiliation(s)
- Zoe M Tapp
- Department of Neuroscience, Institute for Behavioral Medicine Research, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Jonathan P Godbout
- Department of Neuroscience, Institute for Behavioral Medicine Research, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Olga N Kokiko-Cochran
- Department of Neuroscience, Institute for Behavioral Medicine Research, College of Medicine, The Ohio State University, Columbus, OH, United States
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Li X, Tang Y, Ma B, Wang Z, Jiang J, Hou S, Wang S, Zhang J, Deng M, Duan Z, Tang X, Chen AF, Jiang L. The peptide lycosin-I attenuates TNF-α-induced inflammation in human umbilical vein endothelial cells via IκB/NF-κB signaling pathway. Inflamm Res 2018. [DOI: 10.1007/s00011-018-1138-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Zeng J, Liao W. [Research progress in relationship between fractional exhaled nitric oxide and asthma in children]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016; 18:903-908. [PMID: 27655552 PMCID: PMC7389960 DOI: 10.7499/j.issn.1008-8830.2016.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/12/2016] [Indexed: 06/06/2023]
Abstract
Bronchial asthma is a heterogeneous disease that is characterized by airway hyperresponsiveness and chronic inflammation. It is often accompanied by reversible airflow obstruction. Current laboratory testing methods for the diagnosis of asthma in children mainly include lung ventilation function test. Due to the non-cooperation of children, it is very challenging to conduct lung ventilation function test for preschoolers. Lung function testing is an instantaneous indicator, which is influenced by the children's understanding ability and mental factors. In addition, it could not assess the severity of airway inflammation. Fractional exhaled nitric oxide (FeNO) is a noninvasive, simple, and objective indicator of airway inflammation and has gradually gained increased use in children in recent years. This review article introduces the source of FeNO, the reference value of FeNO in laboratory testing, and the progress in the application of FeNO in the diagnosis, prediction, and treatment of asthma in children of various ages.
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Affiliation(s)
- Jing Zeng
- Department of Pediatrics, Southwest Hospital of The Third Military Medical University, Chongqing 400038, China.
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Zeng J, Liao W. [Research progress in relationship between fractional exhaled nitric oxide and asthma in children]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016; 18:903-908. [PMID: 27655552 PMCID: PMC7389960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/12/2016] [Indexed: 11/12/2023]
Abstract
Bronchial asthma is a heterogeneous disease that is characterized by airway hyperresponsiveness and chronic inflammation. It is often accompanied by reversible airflow obstruction. Current laboratory testing methods for the diagnosis of asthma in children mainly include lung ventilation function test. Due to the non-cooperation of children, it is very challenging to conduct lung ventilation function test for preschoolers. Lung function testing is an instantaneous indicator, which is influenced by the children's understanding ability and mental factors. In addition, it could not assess the severity of airway inflammation. Fractional exhaled nitric oxide (FeNO) is a noninvasive, simple, and objective indicator of airway inflammation and has gradually gained increased use in children in recent years. This review article introduces the source of FeNO, the reference value of FeNO in laboratory testing, and the progress in the application of FeNO in the diagnosis, prediction, and treatment of asthma in children of various ages.
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Affiliation(s)
- Jing Zeng
- Department of Pediatrics, Southwest Hospital of The Third Military Medical University, Chongqing 400038, China.
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Weaver JD, Song Y, Yang EY, Ricordi C, Pileggi A, Buchwald P, Stabler CL. Controlled Release of Dexamethasone from Organosilicone Constructs for Local Modulation of Inflammation in Islet Transplantation. Tissue Eng Part A 2015; 21:2250-61. [DOI: 10.1089/ten.tea.2014.0487] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Jessica D. Weaver
- Department of Biomedical Engineering, University of Miami, Miami, Florida
- Diabetes Research Institute, University of Miami, Miami, Florida
| | - Yun Song
- Diabetes Research Institute, University of Miami, Miami, Florida
- Department of Molecular and Cellular Pharmacology, University of Miami, Miami, Florida
| | - Ethan Y. Yang
- Diabetes Research Institute, University of Miami, Miami, Florida
- Department of Biochemistry and Molecular Biology, University of Miami, Miami, Florida
| | - Camillo Ricordi
- Department of Biomedical Engineering, University of Miami, Miami, Florida
- Diabetes Research Institute, University of Miami, Miami, Florida
- Department of Surgery, University of Miami, Miami, Florida
- Department of Microbiology and Immunology, University of Miami, Miami, Florida
- Department of Medicine, University of Miami, Miami, Florida
| | - Antonello Pileggi
- Department of Biomedical Engineering, University of Miami, Miami, Florida
- Diabetes Research Institute, University of Miami, Miami, Florida
- Department of Surgery, University of Miami, Miami, Florida
- Department of Microbiology and Immunology, University of Miami, Miami, Florida
- Department of Medicine, University of Miami, Miami, Florida
| | - Peter Buchwald
- Diabetes Research Institute, University of Miami, Miami, Florida
- Department of Molecular and Cellular Pharmacology, University of Miami, Miami, Florida
| | - Cherie L. Stabler
- Department of Biomedical Engineering, University of Miami, Miami, Florida
- Diabetes Research Institute, University of Miami, Miami, Florida
- Department of Biochemistry and Molecular Biology, University of Miami, Miami, Florida
- Department of Surgery, University of Miami, Miami, Florida
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Barichello T, Collodel A, Generoso JS, Simões LR, Moreira AP, Ceretta RA, Petronilho F, Quevedo J. Targets for adjunctive therapy in pneumococcal meningitis. J Neuroimmunol 2015; 278:262-70. [DOI: 10.1016/j.jneuroim.2014.11.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 11/10/2014] [Accepted: 11/13/2014] [Indexed: 01/08/2023]
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Xu C, Ma X, Chen S, Tao M, Yuan L, Jing Y. Bacterial cellulose membranes used as artificial substitutes for dural defection in rabbits. Int J Mol Sci 2014; 15:10855-67. [PMID: 24937688 PMCID: PMC4100185 DOI: 10.3390/ijms150610855] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/22/2014] [Accepted: 06/03/2014] [Indexed: 12/03/2022] Open
Abstract
To improve the efficacy and safety of dural repair in neurosurgical procedures, a new dural material derived from bacterial cellulose (BC) was evaluated in a rabbit model with dural defects. We prepared artificial dura mater using bacterial cellulose which was incubated and fermented from Acetobacter xylinum. The dural defects of the rabbit model were repaired with BC membranes. All surgeries were performed under sodium pentobarbital anesthesia, and all efforts were made to minimize suffering. All animals were humanely euthanized by intravenous injection of phenobarbitone, at each time point, after the operation. Then, the histocompatibility and inflammatory effects of BC were examined by histological examination, real-time fluorescent quantitative polymerase chain reaction (PCR) and Western Blot. BC membranes evenly covered the surface of brain without adhesion. There were seldom inflammatory cells surrounding the membrane during the early postoperative period. The expression of inflammatory cytokines IL-1β, IL-6 and TNF-α as well as iNOS and COX-2 were lower in the BC group compared to the control group at 7, 14 and 21 days after implantation. BC can repair dural defects in rabbit and has a decreased inflammatory response compared to traditional materials. However, the long-term effects need to be validated in larger animals.
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Affiliation(s)
- Chen Xu
- Department of Neurosurgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, China.
| | - Xia Ma
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Haiquan Road 100, Shanghai 201418, China.
| | - Shiwen Chen
- Department of Neurosurgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, China.
| | - Meifeng Tao
- School of Life Sciences and Biotechnology, Shanghai Jiaotong University, Dongchuan Road 800, Shanghai 200240, China.
| | - Lutao Yuan
- Department of Neurosurgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, China.
| | - Yao Jing
- Department of Neurosurgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Yishan Road 600, Shanghai 200233, China.
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Tan CK, Tan EH, Luo B, Huang CL, Loo JS, Choong C, Tan NS. SMAD3 deficiency promotes inflammatory aortic aneurysms in angiotensin II-infused mice via activation of iNOS. J Am Heart Assoc 2013; 2:e000269. [PMID: 23782924 PMCID: PMC3698794 DOI: 10.1161/jaha.113.000269] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Ninety percent of the patients carrying distinct SMAD3 mutations develop aortic aneurysms and dissections, called aneurysms‐osteoarthritis syndrome (AOS). However, the etiology and molecular events downstream of SMAD3 leading to the pathogenesis of aortic aneurysms in these patients still remain elusive. Therefore, we aimed to investigate the vascular phenotypes of SMAD3‐knockout mice. Methods and Results We have shown that angiotensin II–induced vascular inflammation, but not hypertension, leads to aortic aneurysms and dissections, ultimately causing aortic rupture and death in mice. Lipopolysaccharide‐triggered inflammation confirmed that enhanced aortic macrophage recruitment was essential for aneurysm formation in angiotensin II–infused SMAD3‐knockout mice. In contrast, phenylephrine‐triggered hypertension alone was insufficient to induce aortic aneurysms in mice. Using uniaxial tensile and contractility tests, we showed that SMAD3 deficiency resulted in defective aortic biomechanics and physiological functions, which caused weakening of the aortic wall and predisposed the mice to aortic aneurysms. Chromatin immunoprecipitation (ChIP) and re‐ChIP assays revealed that the underlying mechanism involved aberrant upregulation of inducible nitric oxide synthase (iNOS)–derived nitric oxide production and activation of elastolytic matrix metalloproteinases 2 and 9. Administration of clodronate‐liposomes and iNOS inhibitor completely abrogated these aortic conditions, thereby identifying iNOS‐mediated nitric oxide secretion from macrophages as the downstream event of SMAD3 that drives this severe pathology. Conclusions Macrophage depletion and iNOS antagonism represent 2 promising approaches for preventing aortic aneurysms related to SMAD3 mutations and merit further investigation as adjunctive strategies for the life‐threatening manifestations of AOS.
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Affiliation(s)
- Chek K Tan
- School of Biological Sciences, Nanyang Technological University, Nanyang, Singapore
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Kataoka S, Hattori K, Date A, Tamura H. Human keratinocyte caspase-14 expression is altered in human epidermal 3D models by dexamethasone and by natural products used in cosmetics. Arch Dermatol Res 2013; 305:683-9. [DOI: 10.1007/s00403-013-1359-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 03/24/2013] [Accepted: 04/09/2013] [Indexed: 11/30/2022]
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Kaptanoglu AF, Arca T, Sargon MF, Kilinc K. Protective effect of dexamethasone on fetal rat skin in experimental intrauterine ischaemia/reperfusion injury. Clin Exp Dermatol 2013; 38:396-402. [DOI: 10.1111/ced.12019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2012] [Indexed: 11/28/2022]
Affiliation(s)
| | - T. Arca
- Faculty of Medicine; Near East University; Nicosia; Cyprus
| | | | - K. Kilinc
- Biochemistry; Faculty of Medicine; Hacettepe University; Ankara; Turkey
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17
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Krugner-Higby L, Brown R, Rassette M, Behr M, Okwumabua O, Cook M, Bell C, Flowers MT, Ntambi J, Gendron A. Ulcerative dermatitis in C57BL/6 mice lacking stearoyl CoA desaturase 1. Comp Med 2012; 62:257-63. [PMID: 23043777 PMCID: PMC3415366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Revised: 06/09/2011] [Accepted: 02/04/2012] [Indexed: 06/01/2023]
Abstract
Ulcerative dermatitis (UD) is a common cause of morbidity and euthanasia in mice with a C57BL/6 (B6) background. The purposes of the current study were to determine whether UD lesions could be reliably produced in B6 mice lacking stearoyl-CoA desaturase 1 (SCD1(-/-) mice), to ascertain whether the UD lesions in SCD1(-/-) mice were similar to those found in other B6 mice, and to characterize the cell invasion phenotype of Staphlococcus xylosus cultured from the lesions. S. xylosus isolates from the environment and human skin were used as controls. SCD1(-/-) (n = 8 per group) and nontransgenic B6 control mice (n = 22 mice pooled from 3 groups that received different concentrations of conjugated linoleic acid) were fed standard rodent chow or a semipurified diet (NIH AIN76A) for 4 wk. Samples from other B6 mice with UD (field cases; n = 7) also were submitted for histology and culture. All of the SCD1(-/-) mice developed UD lesions by 4 wk on NIH AIN76A. None of SCD1(-/-) fed standard rodent chow and none of the wildtype B6 mice fed NIH AIN76A developed UD. Supplementation with conjugated linoleic acid did not affect ulcerogenesis. UD lesions in SCD1(-/-) mice and field cases were grossly and histologically similar. S. xylosus was isolated from SCD1(-/-) mice with UD (71%) and field cases of UD (43%). These isolates were the most cell-invasive, followed by the environmental isolate, and finally the human skin isolate. Our results provide a basis for further pathologic and clinical study of UD.
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Affiliation(s)
- Lisa Krugner-Higby
- Research Animal Resource Center, University of Wisconsin-Madison, Madison, Wisconsin, USA.
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18
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Francisco V, Neves BM, Cruz MT, Gonçalo M, Figueiredo A, Duarte CB, Lopes MC. Effect of lipopolysaccharide, skin sensitizers and irritants on thioredoxin-1 expression in dendritic cells: relevance of different signalling pathways. Arch Dermatol Res 2009; 302:271-82. [DOI: 10.1007/s00403-009-0993-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Revised: 08/19/2009] [Accepted: 08/21/2009] [Indexed: 01/22/2023]
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19
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Two enone fatty acids isolated from Gracilaria verrucosa suppress the production of inflammatory mediators by down-regulating NF-κB and STAT1 activity in lipopolysaccharide-stimulated RAW 264.7 cells. Arch Pharm Res 2009; 32:453-62. [DOI: 10.1007/s12272-009-1320-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 01/29/2009] [Accepted: 02/09/2009] [Indexed: 01/14/2023]
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20
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Handbook of experimental pharmacology "dendritic cells": the use of dexamethasone in the induction of tolerogenic DCs. Handb Exp Pharmacol 2009:233-49. [PMID: 19031029 DOI: 10.1007/978-3-540-71029-5_11] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Dendritic cells (DCs) have a central role in immune regulation, ranging from tolerance induction to the induction of specific immune responses. DCs serve as an essential link between innate and adaptive immunity. This broad range of powerful immune stimulatory as well as regulatory functions has made DCs as targets for vaccine development strategies. One approach to promote the tolerogenicity of DCs is to suppress their maturation by pharmacological agents, including glucocorticoids (GCs). In the present chapter we will review GCs used in vitro with cultured DCs, applied in vivo, or used to generate tolerogenic DCs for cellular therapy.
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21
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Cruz MT, Neves BM, Gonçalo M, Figueiredo A, Duarte CB, Lopes MC. Effect of Skin Sensitizers on Inducible Nitric Oxide Synthase Expression and Nitric Oxide Production in Skin Dendritic Cells: Role of Different Immunosuppressive Drugs. Immunopharmacol Immunotoxicol 2008; 29:225-41. [PMID: 17849269 DOI: 10.1080/08923970701512304] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Nitric oxide (NO) is involved in the pathogenesis of acute and chronic inflammatory conditions, namely in allergic contact dermatitis (ACD). However, the mechanism by which NO acts in ACD remains elusive. The present study focuses on the effects of different contact sensitizers (2,4-dinitrofluorbenzene, 1,4-phenylenediamine, nickel sulfate), the inactive analogue of DNFB, 2,4-dichloronitrobenzene, and two irritants (sodium dodecyl sulphate and benzalkonium chloride) on the expression of the inducible isoform of nitric oxide synthase (iNOS) and NO production in skin dendritic cells. It was also studied the role of different immunosuppressive drugs on iNOS expression and NO production. Only nickel sulfate increased the expression of iNOS and NO production being these effects inhibited by dexamathasone. In contrast, cyclosporin A and sirolimus, two other immunosuppressive drugs tested, did not affect iNOS expression triggered by nickel.
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Affiliation(s)
- M T Cruz
- Faculdade de Farmácia, and Centro de Neurociênciase Biologia Celular, Universidade de Coimbra, Coimbra, Portugal.
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22
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Mechanisms of dexamethasone-mediated inhibition of Toll-like receptor signaling induced by Neisseria meningitidis and Streptococcus pneumoniae. Infect Immun 2007; 76:189-97. [PMID: 17938219 DOI: 10.1128/iai.00856-07] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Excessive inflammation contributes to the pathogenesis of bacterial meningitis, which remains a serious disease despite treatment with antibiotics. Therefore, anti-inflammatory drugs have important therapeutic potential, and clinical trials have revealed that early treatment with dexamethasone significantly reduces mortality and morbidity from bacterial meningitis. Here we investigate the molecular mechanisms behind the inhibitory effect of dexamethasone upon the inflammatory responses evoked by Neisseria meningitidis and Streptococcus pneumoniae, two of the major causes of bacterial meningitis. The inflammatory cytokine response was dependent on Toll-like receptor signaling and was strongly inhibited by dexamethasone. Activation of the NF-kappaB pathway was targeted at several levels, including inhibition of IkappaB phosphorylation and NF-kappaB DNA-binding activity as well as upregulation of IkappaB alpha synthesis. Our data also revealed that the timing of steroid treatment relative to infection was important for achieving strong inhibition, particularly in response to S. pneumoniae. Altogether, we describe important targets of dexamethasone in the inflammatory responses evoked by N. meningitidis and S. pneumoniae, which may contribute to our understanding of the clinical effect and the importance of timing with respect to corticosteroid treatment during bacterial meningitis.
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23
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Clark AR. Anti-inflammatory functions of glucocorticoid-induced genes. Mol Cell Endocrinol 2007; 275:79-97. [PMID: 17561338 DOI: 10.1016/j.mce.2007.04.013] [Citation(s) in RCA: 196] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2007] [Accepted: 04/25/2007] [Indexed: 01/12/2023]
Abstract
There is a broad consensus that glucocorticoids (GCs) exert anti-inflammatory effects largely by inhibiting the function of nuclear factor kappaB (NFkappaB) and consequently the transcription of pro-inflammatory genes. In contrast, side effects are thought to be largely dependent on GC-induced gene expression. Biochemical and genetic evidence suggests that the positive and negative effects of GCs on transcription can be uncoupled from one another. Hence, novel GC-related drugs that mediate inhibition of NFkappaB but do not activate gene expression are predicted to retain therapeutic effects but cause fewer or less severe side effects. Here, we critically re-examine the evidence in favor of the consensus, binary model of GC action and discuss conflicting evidence, which suggests that anti-inflammatory actions of GCs depend on the induction of anti-inflammatory mediators. We propose an alternative model, in which GCs exert anti-inflammatory effects at both transcriptional and post-transcriptional levels, both by activating and inhibiting expression of target genes. The implications of such a model in the search for safer anti-inflammatory drugs are discussed.
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Affiliation(s)
- Andrew R Clark
- Kennedy Institute of Rheumatology Division, Imperial College London, 1 Aspenlea Road, Hammersmith, London W6 8LH, United Kingdom.
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24
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Seo SJ, Ahn JY, Cho SH, Kim MN, Hong CK, Ro BI. Effect of amniotic membrane on induced expression of iNOS by exposure to stimulants in HaCaT cells. J Dermatol Sci 2006; 42:78-80. [PMID: 16517128 DOI: 10.1016/j.jdermsci.2006.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2005] [Revised: 01/19/2006] [Accepted: 01/31/2006] [Indexed: 10/24/2022]
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25
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Werners AH, Bull S, Fink-Gremmels J. Endotoxaemia: a review with implications for the horse. Equine Vet J 2005; 37:371-83. [PMID: 16028631 DOI: 10.2746/0425164054529418] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- A H Werners
- Department of Veterinary Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 16, 3584 CM Utrecht, The Netherlands
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26
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Tseng HY, Wu SH, Huang WH, Wang SF, Yang YN, Mahindroo N, Hsu T, Jiaang WT, Lee SJ. Benzothiazolium compounds: novel classes of inhibitors that suppress the nitric oxide production in RAW264.7 cells stimulated by LPS/IFNgamma. Bioorg Med Chem Lett 2005; 15:2027-32. [PMID: 15808462 DOI: 10.1016/j.bmcl.2005.02.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2005] [Revised: 01/31/2005] [Accepted: 02/18/2005] [Indexed: 11/22/2022]
Abstract
A series of benzothiazolium compounds were identified as novel classes of inhibitors of nitric oxide production in a cell culture system. They exhibited approximately 1600 folds potency with IC(50) at approximately 50nM to several microM as compared to IC(50) 88.4microM of l-NMMA, a known inhibitor of nitric oxide synthase. The mechanistic studies suggest that decreased iNOS protein synthesis and mRNA transcription, at least in part, were related to the inhibitory activity of effective benzothiazolium compounds. The correlation of in vivo and in vitro activities using mouse paw edema model was also demonstrated.
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Affiliation(s)
- Huan-Yi Tseng
- Division of Biotechnology and Pharmaceutical Researches, National Health Research Institutes, 35, Keyan Road, Zhunan Town, Miaoli County, Taiwan, ROC
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27
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Vital AL, Gonçalo M, Cruz MT, Figueiredo A, Duarte CB, Celeste Lopes M. The Sensitizers Nickel Sulfate and 2,4-dinitrofluorobenzene Increase CD40 and IL-12 Receptor Expression in a Fetal Skin Dendritic Cell Line. Biosci Rep 2005; 24:191-202. [PMID: 16209128 DOI: 10.1007/s10540-005-2580-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Dendritic cells (DCs) are antigen-presenting cells (APCs) capable of capturing haptens and to process and present them to T lymphocytes. In order to sensitize T cells for contact hypersensitivity (CHS), skin DCs suffer a maturation process with modifications on their surface molecules. The aim of this work was to evaluate changes induced by two contact sensitizers, 2,4-dinitrofluorobenzene (DNFB) and nickel sulfate (NiSO4), and a non-sensitizer 2,4-dichloronitrobenzene (DCNB), on the protein levels of two activation markers, CD40 and IL-12 receptor (IL-12R), in a mouse skin dendritic cell line (FSDC). The expression of CD40 and IL-12R proteins was evaluated by western blot assay and direct immunofluorescence microscopy. The results showed that CD40 and IL-12R expression increased significantly after cell exposure to NiSO4 and DNFB, although DNFB exhibited a stronger activity. There was no effect with DCNB. The epidermal cytokine granulocyte–macrophage colony-stimulating factor (GM-CSF), also used in the experiments, slightly increased the expression of both CD40 and IL-12R and when tested together with the sensitizers the effect was partially additive. The results suggest that the sensitizers DNFB and NiSO4 are directly involved on the changes of the surface markers CD40 and IL-12R in skin DCs, during the sensitization phase of CHS, and this effect may be enhanced by GM-CSF. In contrast, no effect was observed with DCNB.
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Affiliation(s)
- Ana Luísa Vital
- Faculdade de Farmácia, Universidade de Coimbra, Rua do Norte, 3000-295, Coimbra, Portugal
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