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Chen G, Xia Y, Shi X, You Q, Dou W, Zhang Y, Yang X, Mao Y, Diao L, Wang J, Zhou L, Liu M. Sophoridine exerts anti-arthritic effects on fibroblast-like synoviocytes and collagen-induced arthritis in rats. Phytother Res 2024; 38:3337-3351. [PMID: 38634416 DOI: 10.1002/ptr.8205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 11/29/2023] [Accepted: 01/13/2024] [Indexed: 04/19/2024]
Abstract
The discovery of alternative medicines with fewer adverse effects is urgently needed for rheumatoid arthritis (RA). Sophoridine (SR), the naturally occurring quinolizidine alkaloid isolated from the leguminous sophora species, has been demonstrated to possess a wide range of pharmacological activities. However, the effect of SR on RA remains unknown. In this study, the collagen-induced arthritis (CIA) rat model and tumor necrosis factor alpha (TNFα)-induced fibroblast-like synoviocytes (FLSs) were utilized to investigate the inhibitory effect of SR on RA. The anti-arthritic effect of SR was evaluated using the CIA rat model in vivo and TNFα-stimulated FLSs in vitro. Mechanistically, potential therapeutic targets and pathways of SR in RA were analyzed through drug target databases and disease databases, and validation was carried out through immunofluorescence, immunohistochemistry, and Western blot. The in vivo results revealed that SR treatment effectively ameliorated synovial inflammation and bone erosion in rats with CIA. The in vitro studies showed that SR could significantly suppress the proliferation and migration in TNFα-induced arthritic FLSs. Mechanistically, SR treatment efficiently inhibited the activation of MAPKs (JNK and p38) and NF-κB pathways in TNFα-induced arthritic FLSs. These findings were further substantiated by Immunohistochemistry results in the CIA rat. SR exerts an anti-arthritic effect in CIA rats through inhibition of the pathogenic characteristic of arthritic FLSs via suppressing NF-κB and MAPKs (JNK and p38) signaling pathways. SR may have a great potential for development as a novel therapeutic agent for RA treatment.
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Affiliation(s)
- Gang Chen
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yehua Xia
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xiaotian Shi
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Qiuyi You
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Wenwen Dou
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yudie Zhang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xue Yang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yuhang Mao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Li Diao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Jing Wang
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Lin Zhou
- Department of endocrinology, Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
| | - Mei Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
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2
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Solomon DH, Demler O, Rist PM, Santacroce L, Tawakol A, Giles JT, Liao KP, Bathon JM. Biomarkers of Cardiovascular Risk in Patients With Rheumatoid Arthritis: Results From the TARGET Trial. J Am Heart Assoc 2024; 13:e032095. [PMID: 38416140 PMCID: PMC10944054 DOI: 10.1161/jaha.123.032095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/09/2024] [Indexed: 02/29/2024]
Abstract
Cardiovascular disease remains an important comorbidity in patients with rheumatoid arthritis (RA), but traditional models do not accurately predict cardiovascular risk in patients with RA. The addition of biomarkers could improve prediction. METHODS AND RESULTS The TARGET (Treatments Against RA and Effect on FDG PET/CT) trial assessed whether different treatment strategies in RA differentially impact cardiovascular risk as measured by the change in arterial inflammation on arterial target to background ratio on fluorodeoxyglucose positron emission tomography/computed tomography scans conducted 24 weeks apart. A group of 24 candidate biomarkers supported by prior literature was assessed at baseline and 24 weeks later. Longitudinal analyses examined the association between baseline biomarker values, measured in plasma EDTA, and the change in arterial inflammation target to background ratio. Model fit was assessed for the candidate biomarkers only, clinical variables only, and models combining both. One hundred nine patients with median (interquartile range) age 58 years (53-65 years), RA duration 1.4 years (0.5-6.6 years), and 82% women had biomarkers assessed at baseline and follow-up. Because the main trial analyses demonstrated significant target to background ratio decreases with both treatment strategies but no difference across treatment groups, we analyzed all patients together. Baseline values of serum amyloid A, C-reactive protein, soluble tumor necrosis factor receptor 1, adiponectin, YKL-40, and osteoprotegerin were associated with significant change in target to background ratio. When selected candidate biomarkers were added to the clinical variables, the adjusted R2 improved from 0.20 to 0.33 (likelihood ratio P=0.0005). CONCLUSIONS A candidate biomarker approach identified several promising biomarkers that associate with baseline and treatment-associated changes in arterial inflammation in patients with RA. These will now be tested in an external validation cohort.
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Affiliation(s)
- Daniel H. Solomon
- Division of RheumatologyBrigham and Women’s HospitalBostonMA
- Harvard Medical SchoolBrigham and Women’s HospitalBostonMA
| | - Olga Demler
- Harvard Medical SchoolBrigham and Women’s HospitalBostonMA
- Division of Preventive MedicineBrigham and Women’s HospitalBostonMA
- ETHZurichSwitzerland
| | - Pamela M. Rist
- Harvard Medical SchoolBrigham and Women’s HospitalBostonMA
- Division of Preventive MedicineBrigham and Women’s HospitalBostonMA
| | - Leah Santacroce
- Division of RheumatologyBrigham and Women’s HospitalBostonMA
| | - Ahmed Tawakol
- Department of Medicine (Cardiac Unit)Massachusetts General Hospital, Harvard Medical SchoolBostonMA
| | | | - Katherine P. Liao
- Division of RheumatologyBrigham and Women’s HospitalBostonMA
- Harvard Medical SchoolBrigham and Women’s HospitalBostonMA
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Zhu JQ, Tian YY, Chan KL, Hu Z, Xu QQ, Lin ZX, Xian YF. Modified Qing-Zao-Jiu-Fei decoction attenuated pulmonary fibrosis induced by bleomycin in rats via modulating Nrf2/NF-κB and MAPKs pathways. Chin Med 2024; 19:10. [PMID: 38229198 DOI: 10.1186/s13020-024-00882-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/01/2024] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND Qing-Zao-Jiu-Fei Decoction (QZJFD) is a famous herbal formula commonly prescribed for the treatment of lung-related diseases in the ancient and modern times. Trichosanthis Fructus (TF) and Fritillariae Thunbergii Bulbus (FTB) are widely used for treatment of cough and pulmonary disease. In order to identify a more effective formula for treatment of pulmonary fibrosis, we intend to add TF and FTB in QZJFD to form a modified QZJFD (MQZJFD). In this study, we aims to explore MQZJFD as an innovative therapeutic agent for pulmonary fibrosis using bleomycin (BLM)-treated rats and to unravel the underlying molecular mechanisms. METHODS BLM was given to SD rats by intra-tracheal administration of a single dose of BLM (5 mg/kg). QZJFD (3 g/kg) and MQZJFD (1, 2 and 4 g/kg) was given intragastrically daily to rats for 14 days (from day 15 to 28) after BLM administration for 14 consecutive days. RESULTS MQZJFD was found to contain 0.29% of amygdalin, 0.020% of lutin, 0.077% of glycyrrhizic acid and 0.047% of chlorogenic acid. BLM treatment could induce collagen deposition in the lung tissues of rats, indicating that the pulmonary fibrosis rat model had been successfully established. MQZJFD have better effects than the original QZJFD in reducing the pulmonary structure damage and collagen deposition of rat lung fibrosis induced by BLM. MQZJFD could reduce the hydroxyproline content in lung tissues of BLM-treated rats. The biomarkers of fibrosis such as matrix metalloproteinase 9 (MMP9), collagen I and α-smooth muscle actin (α-SMA) were remarkably reduced after treatment with MQZJFD. MQZJFD also have anti-oxidant stress effects by inhibiting the level of malondialdehyde (MDA), but enhancing the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), and the level of glutathione (GSH) in the lung tissues of BLM-treated rats. Moreover, the MQZJFD markedly suppressed the over expressions of p-p65/p65 and p-IκBα/IκBα, but upregulated the Nrf2. MQZJFD also suppressed the protein expressions of p-ERK1/2/ERK1/2, p-p38/p38 and p-JNK/JNK in the lung tissues of BLM-treated rats. CONCLUSIONS MQZJFD could improve the pulmonary fibrosis induced by BLM in rats via inhibiting the fibrosis and oxidative stress via suppressing the activation of NF-κB/Nrf2 and MAPKs pathways.
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Affiliation(s)
- Jia-Qian Zhu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China
| | - Yuan-Yang Tian
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China
| | - Kam Leung Chan
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China
- Hong Kong Institute of Integrative Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China
| | - Zhen Hu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China
| | - Qing-Qing Xu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China
| | - Zhi-Xiu Lin
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China.
- Hong Kong Institute of Integrative Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China.
- Li Dak Sum Yip Yio Chin R&D Centre for Chinese Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China.
| | - Yan-Fang Xian
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, SAR, People's Republic of China.
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Klen J, Dolžan V. SGLT2 Inhibitors in the Treatment of Diabetic Kidney Disease: More than Just Glucose Regulation. Pharmaceutics 2023; 15:1995. [PMID: 37514181 PMCID: PMC10386344 DOI: 10.3390/pharmaceutics15071995] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/30/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Diabetic kidney disease (DKD) is a severe and common complication and affects a quarter of patients with type 2 diabetes mellitus (T2DM). Oxidative stress and inflammation related to hyperglycemia are interlinked and contribute to the occurrence of DKD. It was shown that sodium-glucose cotransporter-2 (SGLT2) inhibitors, a novel yet already widely used therapy, may prevent the development of DKD and alter its natural progression. SGLT2 inhibitors induce systemic and glomerular hemodynamic changes, provide metabolic advantages, and reduce inflammatory and oxidative stress pathways. In T2DM patients, regardless of cardiovascular diseases, SGLT2 inhibitors may reduce albuminuria, progression of DKD, and doubling of serum creatinine levels, thus lowering the need for kidney replacement therapy by over 40%. The molecular mechanisms behind these beneficial effects of SGLT2 inhibitors extend beyond their glucose-lowering effects. The emerging studies are trying to explain these mechanisms at the genetic, epigenetic, transcriptomic, and proteomic levels.
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Affiliation(s)
- Jasna Klen
- Division of Surgery, Department of Abdominal Surgery, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
- Department of Internal Medicine, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Vita Dolžan
- Pharmacogenetics Laboratory, Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
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5
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Faragher JL, Auger JL, Osinski V, Meier LA, Engelson BJ, Firulyova MM, Gonzalez-Torres MI, Brombacher F, Zaitsev K, Marath A, Binstadt BA. Autoimmune Valvular Carditis Requires Endothelial Cell TNFR1 Expression. Arterioscler Thromb Vasc Biol 2023; 43:943-957. [PMID: 37021574 PMCID: PMC10213135 DOI: 10.1161/atvbaha.122.319025] [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: 01/18/2023] [Accepted: 03/21/2023] [Indexed: 04/07/2023]
Abstract
BACKGROUND Inflammation is a key driver of cardiovascular pathology, and many systemic autoimmune/rheumatic diseases are accompanied by increased cardiac risk. In the K/B.g7 mouse model of coexisting systemic autoantibody-mediated arthritis and valvular carditis, valve inflammation depends on macrophage production of TNF (tumor necrosis factor) and IL-6 (interleukin-6). Here, we sought to determine if other canonical inflammatory pathways participate and to determine whether TNF signaling through TNFR1 (tumor necrosis factor receptor 1) on endothelial cells is required for valvular carditis. METHODS We first asked if type 1, 2, or 3 inflammatory cytokine systems (typified by IFNγ, IL-4, and IL-17, respectively) were critical for valvular carditis in K/B.g7 mice, using a combination of in vivo monoclonal antibody blockade and targeted genetic ablation studies. To define the key cellular targets of TNF, we conditionally deleted its main proinflammatory receptor, TNFR1, in endothelial cells. We analyzed how the absence of endothelial cell TNFR1 affected valve inflammation, lymphangiogenesis, and the expression of proinflammatory genes and molecules. RESULTS We found that typical type 1, 2, and 3 inflammatory cytokine systems were not required for valvular carditis, apart from a known initial requirement of IL-4 for autoantibody production. Despite expression of TNFR1 on a wide variety of cell types in the cardiac valve, deleting TNFR1 specifically on endothelial cells protected K/B.g7 mice from valvular carditis. This protection was accompanied by reduced expression of VCAM-1 (vascular cell adhesion molecule), fewer valve-infiltrating macrophages, reduced pathogenic lymphangiogenesis, and diminished proinflammatory gene expression. CONCLUSIONS TNF and IL-6 are the main cytokines driving valvular carditis in K/B.g7 mice. The interaction of TNF with TNFR1 specifically on endothelial cells promotes cardiovascular pathology in the setting of systemic autoimmune/rheumatic disease, suggesting that therapeutic targeting of the TNF:TNFR1 interaction could be beneficial in this clinical context.
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Affiliation(s)
- Jessica L. Faragher
- Center for Immunology, University of Minnesota, Minneapolis, MN
- Department of Pediatrics, University of Minnesota, Minneapolis, MN
- University of Minnesota, Minneapolis, MN
| | - Jennifer L Auger
- Center for Immunology, University of Minnesota, Minneapolis, MN
- Department of Pediatrics, University of Minnesota, Minneapolis, MN
- University of Minnesota, Minneapolis, MN
| | - Victoria Osinski
- Center for Immunology, University of Minnesota, Minneapolis, MN
- Department of Pediatrics, University of Minnesota, Minneapolis, MN
- University of Minnesota, Minneapolis, MN
| | - Lee A Meier
- Center for Immunology, University of Minnesota, Minneapolis, MN
- Department of Pediatrics, University of Minnesota, Minneapolis, MN
- University of Minnesota, Minneapolis, MN
- Department of Surgery, University of Colorado, Aurora, CO
| | - Brianna J Engelson
- Center for Immunology, University of Minnesota, Minneapolis, MN
- University of Minnesota, Minneapolis, MN
| | - Maria M. Firulyova
- Almazov National Medical Research Centre, Saint-Petersburg, Russia
- Computer Technologies Laboratory, ITMO University, Saint Petersburg, Russia
| | | | - Frank Brombacher
- International Centre for Genetic Engineering and Biotechnology, Cape Town, South Africa
| | - Konstantin Zaitsev
- Computer Technologies Laboratory, ITMO University, Saint Petersburg, Russia
| | | | - Bryce A Binstadt
- Center for Immunology, University of Minnesota, Minneapolis, MN
- Department of Pediatrics, University of Minnesota, Minneapolis, MN
- University of Minnesota, Minneapolis, MN
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6
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Zou M, Zou J, Hu X, Zheng W, Zhang M, Cheng Z. Latent Transforming Growth Factor-β Binding Protein-2 Regulates Lung Fibroblast-to-Myofibroblast Differentiation in Pulmonary Fibrosis via NF-κB Signaling. Front Pharmacol 2022; 12:788714. [PMID: 35002722 PMCID: PMC8740300 DOI: 10.3389/fphar.2021.788714] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Despite past extensive studies, the mechanisms underlying pulmonary fibrosis (PF) still remain poorly understood. The aberrantly activated lung myofibroblasts, predominantly emerging through fibroblast-to-myofibroblast differentiation, are considered to be the key cells in PF, resulting in excessive accumulation of extracellular matrix (ECM). Latent transforming growth factor-β (TGFβ) binding protein-2 (LTBP2) has been suggested as playing a critical role in modulating the structural integrity of the ECM. However, its function in PF remains unclear. Here, we demonstrated that lungs originating from different types of patients with PF, including idiopathic PF and rheumatoid arthritis-associated interstitial lung disease, and from mice following bleomycin (BLM)-induced PF were characterized by increased LTBP2 expression in activated lung fibroblasts/myofibroblasts. Moreover, serum LTBP2 was also elevated in patients with COVID-19-related PF. LTBP2 silencing by lentiviral shRNA transfection protected against BLM-induced PF and suppressed fibroblast-to-myofibroblast differentiation in vivo and in vitro. More importantly, LTBP2 overexpression was able to induce differentiation of lung fibroblasts to myofibroblasts in vitro, even in the absence of TGFβ1. By further mechanistic analysis, we demonstrated that LTBP2 silencing prevented fibroblast-to-myofibroblast differentiation and subsequent PF by suppressing the phosphorylation and nuclear translocation of NF-κB signaling. LTBP2 overexpression-induced fibroblast-to-myofibroblast differentiation depended on the activation of NF-κB signaling in vitro. Therefore, our data indicate that intervention to silence LTBP2 may represent a promising therapy for PF.
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Affiliation(s)
- Menglin Zou
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jingfeng Zou
- Department of Respiratory and Critical Care Medicine, Jiangxi Provincial People's Hospital, Nanchang, China
| | - Xingxing Hu
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Weishuai Zheng
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Mingyang Zhang
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhenshun Cheng
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
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7
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Diabetic Nephropathy: Challenges in Pathogenesis, Diagnosis, and Treatment. BIOMED RESEARCH INTERNATIONAL 2021; 2021:1497449. [PMID: 34307650 PMCID: PMC8285185 DOI: 10.1155/2021/1497449] [Citation(s) in RCA: 293] [Impact Index Per Article: 97.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/02/2021] [Indexed: 12/15/2022]
Abstract
Diabetic nephropathy (DN) is the leading cause of end-stage renal disease worldwide. Chronic hyperglycemia and high blood pressure are the main risk factors for the development of DN. In general, screening for microalbuminuria should be performed annually, starting 5 years after diagnosis in type 1 diabetes and at diagnosis and annually thereafter in type 2 diabetes. Standard therapy is blood glucose and blood pressure control using the renin-angiotensin system blockade, targeting A1c < 7%, and <130/80 mmHg. Regression of albuminuria remains an important therapeutic goal. However, there are problems in diagnosis and treatment of nonproteinuric DN (NP-DN), which does not follow the classic pattern of DN. In fact, the prevalence of DN continues to increase, and additional therapy is needed to prevent or ameliorate the condition. In addition to conventional therapies, vitamin D receptor activators, incretin-related drugs, and therapies that target inflammation may also be promising for the prevention of DN progression. This review focuses on the role of inflammation and oxidative stress in the pathogenesis of DN, approaches to diagnosis in classic and NP-DN, and current and emerging therapeutic interventions.
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8
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Du Y, Zhang H, Guo Y, Song K, Zeng L, Chen Y, Xie Z, Li R. CD38 deficiency up-regulated IL-1β and MCP-1 through TLR4/ERK/NF-κB pathway in sepsis pulmonary injury. Microbes Infect 2021; 23:104845. [PMID: 34098107 DOI: 10.1016/j.micinf.2021.104845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/15/2021] [Accepted: 05/17/2021] [Indexed: 01/14/2023]
Abstract
As a disease with high mortality,many cytokines and signaling pathways are associated with sepsis.The pro-inflammatory cytokines and chemokines are participating in the pathogenesis of sepsis, especially in early stage. Moreover, the releases and expressions of cytokines are regulated by numerous signaling pathways, including TLR4/ERK pathway. But despite many studies have expounded the pathogenesis of sepsis and the regulation of cytokines in sepsis, how CD38 influence the expressions of related molecules in sepsis are still unknown. The aim of this study is illuminating the alteration of cytokines and signaling pathways in CD38-/- mice injected with Escherichia coli.Compared with WT mice, E. coli infection results in more severe pulmonary injuries and higher mRNA expressions of cytokines. Compared with E. coli infected WT mice,CD38 knockout leads to aggravated pulmonary injury, increasedphosphorylated ERK1/2, p38 and NF-κB p65, and enhancedlevels of IL-1β, iNOS and MCP-1.While compared with E. coli infected CD38-/- mice, TLR4 mutation results in alleviated pulmonary injury, down-regulated phosphorylated ERK1/2 and NF-κB p65, and decreased expressions of IL-1β and MCP-1.CD38 deficiency increased the expressions of IL-1β andMCP-1and aggravated pulmonary injury through TLR4/ERK/NF-κB pathway in sepsis.
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Affiliation(s)
- Yuna Du
- Department of Clinical Laboratory and Laboratory of Infection & Immunity, Jiangxi Provincial People's Hospital&People's Hospital Affiliated to Nanchang University, Nanchang 330006, China
| | - Huiqing Zhang
- Department of Clinical Laboratory and Laboratory of Infection & Immunity, Jiangxi Provincial People's Hospital&People's Hospital Affiliated to Nanchang University, Nanchang 330006, China; Department of Medical Microbiology, School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China
| | - Yujie Guo
- Department of Clinical Laboratory and Laboratory of Infection & Immunity, Jiangxi Provincial People's Hospital&People's Hospital Affiliated to Nanchang University, Nanchang 330006, China; Department of Medical Microbiology, School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China
| | - Kuangyu Song
- Department of Medical Microbiology, School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China
| | - Lifeng Zeng
- Department of Clinical Laboratory and Laboratory of Infection & Immunity, Jiangxi Provincial People's Hospital&People's Hospital Affiliated to Nanchang University, Nanchang 330006, China
| | - Yiguo Chen
- Department of Clinical Laboratory and Laboratory of Infection & Immunity, Jiangxi Provincial People's Hospital&People's Hospital Affiliated to Nanchang University, Nanchang 330006, China
| | - Zhengyu Xie
- Department of Clinical Laboratory and Laboratory of Infection & Immunity, Jiangxi Provincial People's Hospital&People's Hospital Affiliated to Nanchang University, Nanchang 330006, China
| | - Rong Li
- Department of Clinical Laboratory and Laboratory of Infection & Immunity, Jiangxi Provincial People's Hospital&People's Hospital Affiliated to Nanchang University, Nanchang 330006, China.
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9
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Maglinger B, Sands M, Frank JA, McLouth CJ, Trout AL, Roberts JM, Grupke S, Turchan-Cholewo J, Stowe AM, Fraser JF, Pennypacker KR. Intracranial VCAM1 at time of mechanical thrombectomy predicts ischemic stroke severity. J Neuroinflammation 2021; 18:109. [PMID: 33971895 PMCID: PMC8111916 DOI: 10.1186/s12974-021-02157-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 04/23/2021] [Indexed: 02/07/2023] Open
Abstract
Background Emergent large vessel occlusion (ELVO) strokes are devastating ischemic vascular events for which novel treatment options are needed. Using vascular cell adhesion molecule 1 (VCAM1) as a prototype, the objective of this study was to identify proteomic biomarkers and network signaling functions that are potential therapeutic targets for adjuvant treatment for mechanical thrombectomy. Methods The blood and clot thrombectomy and collaboration (BACTRAC) study is a continually enrolling tissue bank and registry from stroke patients undergoing mechanical thrombectomy. Plasma proteins from intracranial (distal to clot) and systemic arterial blood (carotid) were analyzed by Olink Proteomics for N=42 subjects. Statistical analysis of plasma proteomics used independent sample t tests, correlations, linear regression, and robust regression models to determine network signaling and predictors of clinical outcomes. Data and network analyses were performed using IBM SPSS Statistics, SAS v 9.4, and STRING V11. Results Increased systemic (p<0.001) and intracranial (p=0.013) levels of VCAM1 were associated with the presence of hypertension. Intracranial VCAM1 was positively correlated to both infarct volume (p=0.032; r=0.34) and edema volume (p=0.026; r=0.35). The %∆ in NIHSS from admittance to discharge was found to be significantly correlated to both systemic (p=0.013; r = −0.409) and intracranial (p=0.011; r = −0.421) VCAM1 levels indicating elevated levels of systemic and intracranial VCAM1 are associated with reduced improvement of stroke severity based on NIHSS from admittance to discharge. STRING-generated analyses identified biologic functional descriptions as well as function-associated proteins from the predictive models of infarct and edema volume. Conclusions The current study provides novel data on systemic and intracranial VCAM1 in relation to stroke comorbidities, stroke severity, functional outcomes, and the role VCAM1 plays in complex protein-protein signaling pathways. These data will allow future studies to develop predictive biomarkers and proteomic targets for drug development to improve our ability to treat a devastating pathology. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02157-4.
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Affiliation(s)
- Benton Maglinger
- Department of Neurology, University of Kentucky, Lexington, KY, USA
| | - Madison Sands
- Department of Neurology, University of Kentucky, Lexington, KY, USA
| | - Jacqueline A Frank
- Department of Neurology, University of Kentucky, Lexington, KY, USA.,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, KY, 40536, USA
| | | | - Amanda L Trout
- Department of Neurology, University of Kentucky, Lexington, KY, USA.,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, KY, 40536, USA
| | - Jill M Roberts
- Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, KY, 40536, USA.,Department of Neuroscience, University of Kentucky, Lexington, KY, USA.,Department of Neurosurgery, University of Kentucky, Lexington, KY, USA
| | - Stephen Grupke
- Department of Neurosurgery and Neuroendovascular Surgery, Covenant Medical Center, Lubbock, TX, USA
| | - Jadwiga Turchan-Cholewo
- Department of Neurology, University of Kentucky, Lexington, KY, USA.,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, KY, 40536, USA
| | - Ann M Stowe
- Department of Neurology, University of Kentucky, Lexington, KY, USA.,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, KY, 40536, USA.,Department of Neuroscience, University of Kentucky, Lexington, KY, USA
| | - Justin F Fraser
- Department of Neurology, University of Kentucky, Lexington, KY, USA.,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, KY, 40536, USA.,Department of Neuroscience, University of Kentucky, Lexington, KY, USA.,Department of Neurosurgery, University of Kentucky, Lexington, KY, USA.,Department of Radiology, University of Kentucky, Lexington, KY, USA
| | - Keith R Pennypacker
- Department of Neurology, University of Kentucky, Lexington, KY, USA. .,Center for Advanced Translational Stroke Science, University of Kentucky, Lexington, KY, 40536, USA. .,Department of Neuroscience, University of Kentucky, Lexington, KY, USA.
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Li J, Tang RS, Shi Z, Li JQ. Nuclear factor‐κB in rheumatoid arthritis. Int J Rheum Dis 2020; 23:1627-1635. [PMID: 32965792 DOI: 10.1111/1756-185x.13958] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 08/08/2020] [Accepted: 08/09/2020] [Indexed: 02/02/2023]
Affiliation(s)
- Jie Li
- School of Medicine, University of Electronic Science and Technology of China & department of Pharmacy, Sichuan Provincial People's Hospital, Chengdu, China
| | - Rong-Shuang Tang
- School of Medicine, University of Electronic Science and Technology of China & department of Pharmacy, Sichuan Provincial People's Hospital, Chengdu, China
| | - Zhou Shi
- School of Medicine, University of Electronic Science and Technology of China & department of Pharmacy, Sichuan Provincial People's Hospital, Chengdu, China
| | - Jin-Qi Li
- School of Medicine, University of Electronic Science and Technology of China & department of Pharmacy, Sichuan Provincial People's Hospital, Chengdu, China
- Personalized Drug Therapy Key Laboratory of Sichuan Province & Sichuan Academy of Medical Sciences, Chengdu, China
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11
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Hasseli R, Frommer KW, Schwarz M, Hülser ML, Schreiyäck C, Arnold M, Diller M, Tarner IH, Lange U, Pons-Kühnemann J, Schönburg M, Rehart S, Müller-Ladner U, Neumann E. Adipokines and Inflammation Alter the Interaction Between Rheumatoid Arthritis Synovial Fibroblasts and Endothelial Cells. Front Immunol 2020; 11:925. [PMID: 32582145 PMCID: PMC7280538 DOI: 10.3389/fimmu.2020.00925] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 04/21/2020] [Indexed: 01/05/2023] Open
Abstract
Objective: The long-distance migration of rheumatoid arthritis synovial fibroblasts (RASFs) in the severe combined immunodeficiency (SCID) mouse model of rheumatoid arthritis (RA) suggests that an interaction between RASFs and endothelial cells (EC) is critical in this process. Our objective was to assess whether immunomodulatory factors such as adipokines and antirheumatic drugs affect the adhesion of RASFs to ECs or the expression of surface molecules. Methods: Primary ECs or human umbilical vein endothelial cell (HUVEC) and primary RASFs were stimulated with adiponectin (10 μg/mL), visfatin (100 ng/mL), and resistin (20 ng/mL) or treated with methotrexate (1.5 and 1,000 μM) and the glucocorticoids prednisolone (1 μM) and dexamethasone (1 μM), respectively. The expression of adhesion molecules was analyzed by real-time polymerase chain reaction. The interaction of both cell types was analyzed under static (cell-to-cell binding assay) and dynamic conditions (flow-adhesion assay). Results: Under static conditions, adipokines increased mostly binding of RASFs to EC (adiponectin: 40%, visfatin: 28%, tumor necrosis factor α: 49%). Under flow conditions, visfatin increased RASF adhesion to HUVEC (e.g., 0.5 dyn/cm2: 75.2%). Reduced adhesion of RASFs to E-selectin was observed after treatment with dexamethasone (e.g., 0.9 dyn/cm2: −40%). In ECs, tumor necrosis factor α (TNF-α) increased expression of intercellular adhesion molecule 1 (20-fold) and vascular cell adhesion molecule 1 (77-fold), whereas P-selectin was downregulated after stimulation with TNF-α (−6-fold). Conclusion: The adhesion of RASFs to EC was increased by visfatin under static and flow conditions, whereas glucocorticoids were able to decrease adhesion to E-selectin. The process of migration and adhesion of RASFs to ECs could be enhanced by adipokines via adhesion molecules and seems to be targeted by therapeutic intervention with glucocorticoids.
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Affiliation(s)
- Rebecca Hasseli
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Klaus W Frommer
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Maria Schwarz
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Marie-Lisa Hülser
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Carina Schreiyäck
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Mona Arnold
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Magnus Diller
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Ingo H Tarner
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Uwe Lange
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Joern Pons-Kühnemann
- Medical Statistics, Institute of Medical Informatics, Justus-Liebig University Giessen, Giessen, Germany
| | - Markus Schönburg
- Department of Cardiac Surgery, Kerckhoff-Klinik, Bad Nauheim, Germany
| | - Stefan Rehart
- Department of Orthopedics and Trauma Surgery, Agaplesion Markus Hospital, Frankfurt, Germany
| | - Ulf Müller-Ladner
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
| | - Elena Neumann
- Department of Internal Medicine and Rheumatology, Justus-Liebig-University Giessen, Kerckhoff, Bad Nauheim, Germany
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12
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Joung EJ, Kwon M, Gwon WG, Cao L, Lee SG, Utsuki T, Wakamatsu N, Kim JI, Kim HR. Meroterpenoid-Rich Fraction of the Ethanol Extract of Sargassum Serratifolium Suppresses Collagen-Induced Rheumatoid Arthritis in DBA/1J Mice Via Inhibition of Nuclear Factor κB Activation. Mol Nutr Food Res 2020; 64:e1900373. [PMID: 31900972 DOI: 10.1002/mnfr.201900373] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 12/10/2019] [Indexed: 12/20/2022]
Abstract
SCOPE Rheumatoid arthritis (RA) is an autoimmune disorder related to the inflammation of cartilage due to the infiltration of inflammatory cells. Sargassum serratifolium, a brown alga, possesses strong anti-inflammatory activities. METHODS AND RESULTS The effect of meroterpenoid-rich fraction from the ethanol extract of S. serratifolium (MES) on RA and its underlying mechanisms on the inhibition of RA using a collagen-induced arthritis (CIA) mouse model are examined. The results show that MES ameliorates paw swelling and reduces the arthritis score. MES considerably decreases the secretion of pro-inflammatory cytokines in the serum and joint tissue of mice. Histopathological analysis demonstrates that MES strongly inhibited bone damage and inflammatory cell intrusion in the joint tissue. The expression of inflammatory enzymes and adhesion molecules is significantly inhibited in the serum and joint tissue of MES-fed mice. In addition, MES downregulates the nuclear factor κB (NF-κB) signaling pathway by suppressing the phosphorylation of protein kinase B, c-Jun N-terminal kinase, and p38 mitogen-activated protein kinases. CONCLUSIONS MES supplementation remarkably reduces inflammatory response in CIA mouse model. These results indicate that MES can be used as a pharmaceutical agent against RA.
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Affiliation(s)
- Eun-Ji Joung
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Misung Kwon
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Wi-Gyeong Gwon
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Lei Cao
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Sang-Gil Lee
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Tadanobu Utsuki
- Department of Pathobiological Science, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70802, USA
| | - Nobuko Wakamatsu
- Department of Pathobiological Science, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70802, USA
| | - Jae-Il Kim
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Hyeung-Rak Kim
- Department of Food Science and Nutrition, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
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13
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Cheng S, Li Z, He J, Fu S, Duan Y, Zhou Q, Yan Y, Liu X, Liu L, Feng C, Zhang L, He J, Deng Y, Sun LQ. Epstein-Barr virus noncoding RNAs from the extracellular vesicles of nasopharyngeal carcinoma (NPC) cells promote angiogenesis via TLR3/RIG-I-mediated VCAM-1 expression. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1201-1213. [PMID: 30659926 DOI: 10.1016/j.bbadis.2019.01.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 12/30/2018] [Accepted: 01/13/2019] [Indexed: 02/07/2023]
Abstract
Viral noncoding RNAs (Epstein-Barr virus-encoded RNAs, EBERs) are believed to play a critical role in the progression of lymphoma and nasopharyngeal carcinoma (NPC). However, the accurate mechanisms accounting for their oncogenic function have not been elucidated, especially in terms of interaction between tumor cells and mesenchymal cells. Here, we report that, in addition to NPC cells, EBERs are also found in endothelial cells in Epstein-Barr virus (EBV)-infected NPC parenchymal tissues, which implicates NPC-derived extracellular vesicles (EVs) in transmitting EBERs to endothelial cells. In support of this hypothesis, we first ascertained if EBERs could be transferred to endothelial cells via EVs isolated from NPC culture supernatant. Then, we clarified that EVs-derived EBERs could promote angiogenesis through stimulation of VCAM-1 expression. Finally, we explored the involvement of EBER recognition by TLR3 and RIG-I in NPC angiogenesis. Our observations collectively illustrate the significance and mechanism of EVs-derived EBERs in angiogenesis and underlie the interaction mechanisms between EBV-infected NPC cells and the tumor microenvironment.
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Affiliation(s)
- Shiyue Cheng
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Zhi Li
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China.
| | - Junju He
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Shujun Fu
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Yumei Duan
- Department of Pathology, Xiangya Hospital, Central South University, China
| | - Qin Zhou
- Department of Oncology, Xiangya Hospital, Central South University, China
| | - Yuanliang Yan
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiaoyu Liu
- Shanghai Institute of Medical Image, Fudan University, Shanghai 200032, China
| | - Liyu Liu
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Chang Feng
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Lu Zhang
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Jiang He
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Yuezhen Deng
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China
| | - Lun-Quan Sun
- Center for Molecular Medicine, Xiangya Hospital and Collaboration Innovation Center for Cancer Medicine, Central South University, China; Key Laboratory of Molecular Radiation Oncology of Hunan Province, China.
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Sini decoction ameliorates sepsis-induced acute lung injury via regulating ACE2-Ang (1-7)-Mas axis and inhibiting the MAPK signaling pathway. Biomed Pharmacother 2019; 115:108971. [PMID: 31102910 DOI: 10.1016/j.biopha.2019.108971] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/06/2019] [Accepted: 05/08/2019] [Indexed: 12/23/2022] Open
Abstract
Sepsis, as life-threatening organ dysfunction caused by a dysregulated host response to infection, is characterized by the extensive release of cytokines and other mediators. Sini decoction (SND), a traditional Chinese prescription medicine, has been used clinically for the treatment of sepsis. But its explicit mechanism of action is still unclear. The present study aims to evaluate the potential protective effects of SND on sepsis-induced acute lung injury (ALI). After SND intervention, the lung tissues of each experimental group were collected. H&E sections were used to observe the pathological changes of lung tissue, and alveolar lavage fluid was collected to detect the infiltration of inflammatory cells. Level of inflammatory factors in lung tissue were analyzed by qRT-PCR. The change of Renin angiotensin system (RAS), as well as downstream MAPK/NF-κB signaling pathways were measured by Western blot. For in vitro experiments, human umbilical vein endothelial cells (HUVECs) were pretreated with lipopolysaccharide (LPS) and treated with SND. Subsequently, the expression levels of RAS and MAPK/NF-κB signaling pathways were measured by Western blot. In vivo, we found that SND significantly attenuated sepsis-induced pathological injury in the lung. SND also inhibited LPS-mediated inflammatory cell infiltration, the expression of pro-apoptotic proteins and the production of IL-6, IL-1β, TNF-α and MCP-1. In vitro, experiments using a co-culture of HUVECs with SND showed that there was a decrease in pro-apoptotic protein and pro-inflammatory mediator. In this research, we also found that SND protective action could be attributed to the regulation of renin-angiotensin system (RAS). MAPKs and NF-κB pathways. To conclude, our study demonstrated that SND ameliorates sepsis-induced-ALI via regulating ACE2-Ang (1-7)-Mas axis and inhibiting the MAPK signaling pathway.
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15
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Vallejo A, Chami B, Dennis JM, Simone M, Ahmad G, Abdo AI, Sharma A, Shihata WA, Martin N, Chin-Dusting JPF, de Haan JB, Witting PK. NFκB Inhibition Mitigates Serum Amyloid A-Induced Pro-Atherogenic Responses in Endothelial Cells and Leukocyte Adhesion and Adverse Changes to Endothelium Function in Isolated Aorta. Int J Mol Sci 2018; 20:ijms20010105. [PMID: 30597899 PMCID: PMC6337750 DOI: 10.3390/ijms20010105] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 12/14/2018] [Accepted: 12/18/2018] [Indexed: 01/19/2023] Open
Abstract
The acute phase protein serum amyloid A (SAA) is associated with endothelial dysfunction and early-stage atherogenesis. Stimulation of vascular cells with SAA increases gene expression of pro-inflammation cytokines and tissue factor (TF). Activation of the transcription factor, nuclear factor kappa-B (NFκB), may be central to SAA-mediated endothelial cell inflammation, dysfunction and pro-thrombotic responses, while targeting NFκB with a pharmacologic inhibitor, BAY11-7082, may mitigate SAA activity. Human carotid artery endothelial cells (HCtAEC) were pre-incubated (1.5 h) with 10 μM BAY11-7082 or vehicle (control) followed by SAA (10 μg/mL; 4.5 h). Under these conditions gene expression for TF and Tumor Necrosis Factor (TNF) increased in SAA-treated HCtAEC and pre-treatment with BAY11-7082 significantly (TNF) and marginally (TF) reduced mRNA expression. Intracellular TNF and interleukin 6 (IL-6) protein also increased in HCtAEC supplemented with SAA and this expression was inhibited by BAY11-7082. Supplemented BAY11-7082 also significantly decreased SAA-mediated leukocyte adhesion to apolipoprotein E-deficient mouse aorta in exvivo vascular flow studies. In vascular function studies, isolated aortic rings pre-treated with BAY11-7082 prior to incubation with SAA showed improved endothelium-dependent vasorelaxation and increased vascular cyclic guanosine monophosphate (cGMP) content. Together these data suggest that inhibition of NFκB activation may protect endothelial function by inhibiting the pro-inflammatory and pro-thrombotic activities of SAA.
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Affiliation(s)
- Abigail Vallejo
- Discipline of Pathology, Sydney Medical School, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Belal Chami
- Discipline of Pathology, Sydney Medical School, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Joanne M Dennis
- Discipline of Pathology, Sydney Medical School, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Martin Simone
- Discipline of Pathology, Sydney Medical School, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Gulfam Ahmad
- Discipline of Pathology, Sydney Medical School, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Adrian I Abdo
- Heart Research Institute, Newton, NSW 2053, Australia.
| | - Arpeeta Sharma
- Baker Heart and Diabetes Institute, Victoria 3004, Australia.
| | - Waled A Shihata
- Baker Heart and Diabetes Institute, Victoria 3004, Australia.
- Department of Medicine, Monash University, Victoria 3500, Australia.
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Monash University £Department of Pharmacology, Monash University, Victoria 3800, Australia.
| | - Nathan Martin
- Discipline of Pathology, Sydney Medical School, The University of Sydney, Camperdown, NSW 2006, Australia.
| | - Jaye P F Chin-Dusting
- Baker Heart and Diabetes Institute, Victoria 3004, Australia.
- Department of Medicine, Monash University, Victoria 3500, Australia.
- Cardiovascular Disease Program, Biomedicine Discovery Institute, Monash University £Department of Pharmacology, Monash University, Victoria 3800, Australia.
| | - Judy B de Haan
- Baker Heart and Diabetes Institute, Victoria 3004, Australia.
- Department of Immunology, Monash University, Victoria 3004, Australia.
- Department of Physiology, Anatomy & Microbiology, School of Life Sciences, La Trobe University, Bundoora, VIC 3083, Australia.
| | - Paul K Witting
- Discipline of Pathology, Sydney Medical School, The University of Sydney, Camperdown, NSW 2006, Australia.
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16
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Guo Y, Ye Q, Yang S, Wu J, Ye B, Wu Y, Huang Z, Zheng C. Therapeutic effects of polysaccharides from Anoectochilus roxburghii on type II collagen-induced arthritis in rats. Int J Biol Macromol 2018; 122:882-892. [PMID: 30408452 DOI: 10.1016/j.ijbiomac.2018.11.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/03/2018] [Accepted: 11/03/2018] [Indexed: 02/07/2023]
Abstract
Anoectochilus roxburghii, a famous Chinese herbal medicine, has been commonly used for the treatment of liver disease, diabetes, and rheumatoid arthritis. Our study aimed to investigate the anti-rheumatoid arthritis effects of A. roxburghii polysaccharides (ARP), using the rat's model of type II collagen-induced arthritis (CIA). ARP was prepared by alcohol sedimentation and structurally characterized based on combined chemical, chromatographic and spectroscopic methods. High Performance Size Exclusion Chromatography-Multiangle Laser Light Scattering-Refrative Index (HPSEC-MALLS-RI) analysis revealed that ARP includes two peaks, and the weight-average molecular weight (Mw) of the principal one was estimated as 5.90 kDa with a relative content of 98.2%. Pharmacological results exhibited that ARP significantly decreased the arthritis index and ameliorated the inflammatory cell infiltration and the synovial tissue destruction in CIA rats. Additionally, ARP possessed significant NO production inhibitory effects and antioxidant activity. Further anti-inflammatory mechanism investigations indicated that ARP significantly inhibited the activation of nuclear factor κB (NF-κB) pathway by suppressing the phosphorylation of IκB and p65, which subsequently down-regulated the mRNA expressions of IL-1β and IL-6 in LPS-stimulated RAW 264.7 cells. These findings suggested that ARP has great potential in the development of functional foods and dietary supplements for the treatment of rheumatoid arthritis.
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Affiliation(s)
- Yaoli Guo
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou 350122, China
| | - Qi Ye
- Department of Biological Science, College of Life Science, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, Fuzhou 350002, China
| | - Shuling Yang
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou 350122, China
| | - Jinzhong Wu
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou 350122, China
| | - Bingzhu Ye
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Yanbin Wu
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou 350122, China.
| | - Zehao Huang
- School of Pharmacy, Fujian University of Traditional Chinese Medicine, 1 Qiuyang Road, Fuzhou 350122, China.
| | - Chengjian Zheng
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China.
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17
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Nasriati F, Hidayat R, Budiman B, Rinaldi I. Correlation Between Tumor Necrosis Factor-α Levels, Free Fatty Acid Levels, and Soluble Vascular Cell Adhesion Molecule-1 Levels in Rheumatoid Arthritis Patients. Open Rheumatol J 2018; 12:86-93. [PMID: 30123370 PMCID: PMC6062898 DOI: 10.2174/1874312901812010086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/02/2018] [Accepted: 06/05/2018] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The mortality of Rheumatoid Arthritis (RA) is quite high, which is largely due to cardiovascular complications caused by endothelial dysfunction. One of the important inflammatory mediators that contribute to RA joints arthritis of TNF-α, also proven to play a role in endothelial dysfunction and play a role in increasing intracellular lipolysis, thus increasing circulating FFA levels. OBJECTIVES To determine the correlation between TNF-α levels with VCAM-1 levels, correlation of TNF-α levels with FFA levels, and correlation of FFA levels with VCAM-1 levels. METHODS Cross sectional and retrospective design studies of adult RA patients treated at Cipto Mangunkusumo Hospital (RSCM), without metabolic disturbances, acute infection, cardiovascular disorders, or other autoimmune diseases. The cross-sectional data was collected from October to November 2017, while retrospective samples were collected since August 2016. TNF-α, VCAM-1, and FFA levels were assessed by serum blood test by ELISA method. Correlation analysis is done by Pearson analysis when the data distribution is normal and with Spearman analysis when the data distribution is not normal. RESULTS A total of 35 subjects were enrolled in the study. Most (97.1%) were women with an average age of 45.29 years, median disease duration of 48 months, and most had moderate disease activity (65.7%). No significant correlation was found between TNF-α levels and VCAM-1 levels (p = 0.677; r = +0.073). as well betwen TNF-α levels and FFA levels (p = 0.227; r = -0.21). The correlation between FFA and VCAM-1 levels showed significant correlation with negative correlation and weak correlation (p = 0.036; r = -0.355). CONCLUSIONS (1) There was no correlation between TNF-α levels and VCAM-1 levels in RA patients; (2) There was no correlation between TNF-α levels and FFA levels in RA patients; (3) There was a negative correlation between FFA levels and VCAM-1 levels in RA patients.
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Affiliation(s)
- Fazria Nasriati
- Department of Internal Medicine, Faculty of Medicine Universitas Indonesia -s Cipto Mangunkusumo General Hospital, Jalan Diponegoro 71,Jakarta 10310,Indonesia
| | - Rudy Hidayat
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jalan Diponegoro 71,Jakarta,Indonesia
| | - Budiman Budiman
- Division of Endocrinology and Metabolic Diseases, Department of Internal Medicine, Faculty of Medicine Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jalan Diponegoro 71,Jakarta,Indonesia
| | - Ikhwan Rinaldi
- Clinical Epidemiology Unit, Department of Internal Medicine, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jalan Diponegoro 71,Jakarta,Indonesia
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18
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A critical role of E2F transcription factor 2 in proinflammatory cytokines-dependent proliferation and invasiveness of fibroblast-like synoviocytes in rheumatoid Arthritis. Sci Rep 2018; 8:2623. [PMID: 29422529 PMCID: PMC5805761 DOI: 10.1038/s41598-018-20782-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 01/24/2018] [Indexed: 12/25/2022] Open
Abstract
As a transcription factor, E2F2 participates in regulation of numerous genes. To investigate the role and mechnism of E2F2 in RA, expression of E2F2 in synovial tissue was detected. Proliferation, invasion, and secretion of inflammatory cytokines were measured after E2F2 was knocked-down in RASFs by siRNA transfection. Induction of TNF-α, IL-6, and LPS on expression and nuclear translocation of E2F2, and signal pathways involved in the process were tested. ChIP was used to investigate direct binding of NF-кB to the promoter of E2F2, and E2F2 to the promoter of IL-6. The correlation between mRNA levels of E2F2 and IL-6 or TNF-α in secreted in supernatant of RASFs were also investigated. As a result, silencing E2F2 could inhibit the proliferation and invasion of RASFs. LPS, IL-6 can stimulate the expression of E2F2 in RASFs both via the NF-кB pathway, while TNF-α via the ERK pathway. TNF-α can facilitate the nuclear translocation of E2F2 and TNF-α can bind to promoter of E2F2, and then E2F2 can bind to the promoter of IL-6 directly. Significant correlations was found between levels of E2F2 and IL-6/TNF-α in synoviocytes of RA patients. Our findings indicate that E2F2 may play an important role in pathogenesis of RA.
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Al Jameil N, Tabassum H, Fatima S, Naiman Ali M, Rizwana H, Aziz Khan F. Ameliorating Effect of Vitamin C Against Potassium Dichromate Induced Oxidative Stress and Inflammatory Response in Rats. INT J PHARMACOL 2017. [DOI: 10.3923/ijp.2017.990.999] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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20
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Cytokine-induced autophagy promotes long-term VCAM-1 but not ICAM-1 expression by degrading late-phase IκBα. Sci Rep 2017; 7:12472. [PMID: 28963466 PMCID: PMC5622139 DOI: 10.1038/s41598-017-12641-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 09/13/2017] [Indexed: 12/31/2022] Open
Abstract
Pro-inflammatory cytokines are known to induce endothelial cell autophagy, but the role of autophagy in regulating the expression of pro-inflammatory molecules has not been characterized. We hypothesized that autophagy facilitates expression of endothelial adhesion molecules. TNFα and IL-1β induced autophagy markers in human umbilical vein endothelial cells and inhibition of autophagy by 3-methyladenine (3-MA) blocked adhesion of Jurkat lymphocytes. Interestingly, 3-MA suppressed VCAM-1 but not ICAM-1 expression at 24 hours but not 6 hours. 3-MA suppressed VCAM-1 transcription and decreased nuclear NF-κB p65 level at 6 hours but not at 2 hours. Cytokines induced a biphasic degradation of IκBα and 3-MA selectively blocked the late-phase IκBα degradation. Our results suggest that cytokine-induced autophagy contributes to late-phase IκBα degradation, facilitates NF-κB nuclear translocation and VCAM-1 transcription for long-term VCAM-1 expression. With a cytokines array assay, we found that 3-MA also inhibited IP-10 expression. These findings provide new information about the role of endothelial autophagy in persistent expression of VCAM-1 and IP-10 which enhance lymphocyte recruitment and adhesion to endothelium.
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Priya GB, Nagaleekar VK, Milton AAP, Saminathan M, Kumar A, Sahoo AR, Wani SA, Kumar A, Gupta SK, Sahoo AP, Tiwari AK, Agarwal RK, Gandham RK. Genome wide host gene expression analysis in mice experimentally infected with Pasteurella multocida. PLoS One 2017; 12:e0179420. [PMID: 28704394 PMCID: PMC5509158 DOI: 10.1371/journal.pone.0179420] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 05/30/2017] [Indexed: 12/25/2022] Open
Abstract
Pasteurella multocida causes acute septicemic and respiratory diseases, including haemorrhagic septicaemia, in cattle and buffalo with case fatality of 100%. In the present study, mice were infected with P. multocida (1.6 × 103 cfu, intraperitoneal) to evaluate host gene expression profile at early and late stages of infection using high throughput microarray transcriptome analyses. Several differentially expressed genes (DEGs) at both the time points were identified in P.multocida infected spleen, liver and lungs. Functional annotation of these DEGs showed enrichment of key pathways such as TLR, NF-κB, MAPK, TNF, JAK-STAT and NOD like receptor signaling pathways. Several DEGs overlapped across different KEGG pathways indicating a crosstalk between them. The predicted protein—protein interaction among these DEGs suggested, that the recognition of P. multocida LPS or outer membrane components by TLR4 and CD14, results in intracellular signaling via MyD88, IRAKs and/or TRAF6 leading to activation of NFκB and MAPK pathways and associated cytokines.
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Affiliation(s)
- G. Bhuvana Priya
- Division of Bacteriology & Mycology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Viswas Konasagara Nagaleekar
- Division of Bacteriology & Mycology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
- * E-mail: (RKG); (VKN); (RKA)
| | - A. Arun Prince Milton
- Division of Veterinary Public Health, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - M. Saminathan
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Amod Kumar
- Division of Animal Genetics, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Amit Ranjan Sahoo
- Division of Veterinary Biotechnology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Sajad Ahmad Wani
- Division of Veterinary Biotechnology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - Amit Kumar
- Division of Veterinary Biotechnology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - S. K. Gupta
- Division of Livestock and Fishery Management, ICAR Research Complex for Eastern Region (ICAR-RCER), Patna, Bihar, India
| | - Aditya P. Sahoo
- Division of Veterinary Biotechnology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - A. K. Tiwari
- Division of Biological Standardization, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
| | - R. K. Agarwal
- Division of Bacteriology & Mycology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
- * E-mail: (RKG); (VKN); (RKA)
| | - Ravi Kumar Gandham
- Division of Veterinary Biotechnology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India
- * E-mail: (RKG); (VKN); (RKA)
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22
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Resveratrol inhibits BK-induced COX-2 transcription by suppressing acetylation of AP-1 and NF-κB in human rheumatoid arthritis synovial fibroblasts. Biochem Pharmacol 2017; 132:77-91. [DOI: 10.1016/j.bcp.2017.03.003] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 03/07/2017] [Indexed: 01/27/2023]
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23
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Pichler R, Afkarian M, Dieter BP, Tuttle KR. Immunity and inflammation in diabetic kidney disease: translating mechanisms to biomarkers and treatment targets. Am J Physiol Renal Physiol 2017; 312:F716-F731. [PMID: 27558558 PMCID: PMC6109808 DOI: 10.1152/ajprenal.00314.2016] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/16/2016] [Indexed: 01/10/2023] Open
Abstract
Increasing incidences of obesity and diabetes have made diabetic kidney disease (DKD) the leading cause of chronic kidney disease and end-stage renal disease worldwide. Despite current pharmacological treatments, including strategies for optimizing glycemic control and inhibitors of the renin-angiotensin system, DKD still makes up almost one-half of all cases of end-stage renal disease in the United States. Compelling and mounting evidence has clearly demonstrated that immunity and inflammation play a paramount role in the pathogenesis of DKD. This article reviews the involvement of the immune system in DKD and identifies important roles of key immune and inflammatory mediators. One of the most recently identified biomarkers is serum amyloid A, which appears to be relatively specific for DKD. Novel and evolving treatment approaches target protein kinases, transcription factors, chemokines, adhesion molecules, growth factors, advanced glycation end-products, and other inflammatory molecules. This is the beginning of a new era in the understanding and treatment of DKD, and we may have finally reached a tipping point in our fight against the growing burden of DKD.
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Affiliation(s)
- Raimund Pichler
- Division of Nephrology, University of Washington, Seattle, Washington;
| | - Maryam Afkarian
- Division of Nephrology, Kidney Research Institute, University of Washington, Seattle, Washington; and
| | - Brad P Dieter
- Division of Nephrology, Kidney Research Institute, University of Washington, Seattle, Washington; and
- Providence Health Care, Spokane, Washington
| | - Katherine R Tuttle
- Division of Nephrology, Kidney Research Institute, University of Washington, Seattle, Washington; and
- Providence Health Care, Spokane, Washington
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24
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Structural cartilage damage attracts circulating rheumatoid arthritis synovial fibroblasts into affected joints. Arthritis Res Ther 2017; 19:40. [PMID: 28245866 PMCID: PMC5331726 DOI: 10.1186/s13075-017-1245-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 01/25/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Rheumatoid arthritis synovial fibroblasts (RASFs) are known to travel via the bloodstream from sites of cartilage destruction to new locations where they reinitiate the destructive processes at distant articular cartilage surfaces. In this study, we examined the role of interleukin (IL)-1-induced cartilage changes and their chemotactic effect on RASF transmigratory capacity. METHODS To investigate synovial fibroblast (SF) transmigration through endothelial layers, we used a modified Boyden chamber with an endothelioma cell layer (bEnd.5) as a barrier and IL-1-treated murine cartilage explants as a chemotactic stimulus for SFs from human tumor necrosis factor-transgenic (hTNFtg) mice. We injected recombinant IL-1 or collagenase into knee joints of wild-type mice, followed by tail vein injection of fluorescence-labeled hTNFtg SFs. The distribution and intensity of transmigrating hTNFtg SFs were measured by fluorescence reflectance imaging with X-ray coregistration. Toluidine blue staining was performed to evaluate the amount of cartilage destruction. RESULTS Histomorphometric analyses and in vivo imaging revealed a high degree of cartilage proteoglycan loss after intra-articular IL-1 and collagenase injection, accompanied by an enhanced in vivo extravasation of hTNFtg SFs into the respective knee joints, suggesting that structural cartilage damage contributes significantly to the attraction of hTNFtg SFs into these joints. In vitro results showed that degraded cartilage was directly responsible for the enhanced transmigratory capacity because stimulation with IL-1-treated cartilage, but not with IL-1 or cartilage alone, was required to increase hTNFtg SF migration. CONCLUSIONS The present data indicate that structural cartilage damage facilitates the migration of arthritic SF into affected joints. The prevention of early inflammatory cartilage damage may therefore help prevent the progression of rheumatoid arthritis and its spread to previously unaffected joints.
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25
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Gautam A, Gupta S, Mehndiratta M, Sharma M, Singh K, Kalra OP, Agarwal S, Gambhir JK. Association of NFKB1 gene polymorphism (rs28362491) with levels of inflammatory biomarkers and susceptibility to diabetic nephropathy in Asian Indians. World J Diabetes 2017; 8:66-73. [PMID: 28265344 PMCID: PMC5320420 DOI: 10.4239/wjd.v8.i2.66] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/16/2016] [Accepted: 12/28/2016] [Indexed: 02/05/2023] Open
Abstract
AIM To investigate the association of NFKB1 gene -94 ATTG insertion/deletion (rs28362491) polymorphism with inflammatory markers and risk of diabetic nephropathy in Asian Indians.
METHODS A total of 300 subjects were recruited (100 each), normoglycemic, (NG); type 2 diabetes mellitus (T2DM) without any complications (DM) and T2DM with diabetic nephropathy [DM-chronic renal disease (CRD)]. Analysis was carried out by polymerase chain reaction-restriction fragment length polymorphism and ELISA. Pearson’s correlation, analysis of variance and logistic regression were used for statistical analysis.
RESULTS The allelic frequencies of -94 ATTG insertion/deletion were 0.655/0.345 (NG), 0.62/0.38 (DM) and 0.775/0.225 (DM-CRD). The -94 ATTG ins allele was associated with significantly increased levels of urinary monocyte chemoattractant protein-1 (uMCP-1); uMCP-1 (P = 0.026) and plasma tumor necrosis factor-alpha (TNF-α); TNF-α (P = 0.030) and almost doubled the risk of diabetic nephropathy (OR = 1.91, 95%CI: 1.080-3.386, P = 0.025).
CONCLUSION -94 ATTG ins/ins polymorphism might be associated with increased risk of developing nephropathy in Asian Indian subjects with diabetes mellitus.
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Yang PF, Song XY, Zeng T, Ai QD, Liu DD, Zuo W, Zhang S, Xia CY, He X, Chen NH. IMM-H004, a coumarin derivative, attenuated brain ischemia/reperfusion injuries and subsequent inflammation in spontaneously hypertensive rats through inhibition of VCAM-1. RSC Adv 2017. [DOI: 10.1039/c7ra02154b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We studied the effect of IMM-H004 in treating brain I/R injury in spontaneously hypertensive rats and showed that IMM-H004 could efficiently ameliorate neurological defects and infarct volume in a time and dose dependent manner.
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Affiliation(s)
- Peng-Fei Yang
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Xiu-Yun Song
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Ting Zeng
- College of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Qi-Di Ai
- College of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Dan-Dan Liu
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- China
| | - Wei Zuo
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Shuai Zhang
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Cong-Yuan Xia
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Xin He
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- China
| | - Nai-Hong Chen
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
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27
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Huang D, Zhao Q, Liu H, Guo Y, Xu H. PPAR-α Agonist WY-14643 Inhibits LPS-Induced Inflammation in Synovial Fibroblasts via NF-kB Pathway. J Mol Neurosci 2016; 59:544-53. [PMID: 27339772 DOI: 10.1007/s12031-016-0775-y] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 05/26/2016] [Indexed: 11/28/2022]
Abstract
Osteoarthritis (OA), the most prevalent form of arthritis that results from breakdown of joint cartilage and underlying bone, has been viewed as a chronic condition manifested by persistence of inflammatory responses and infiltration of lymphocytes. Regulation of the inflammatory responses in synovial fibroblasts might be useful to prevent the development and deterioration of osteoarthritis. WY-14643, a potent peroxisome proliferator activator receptor-α (PPAR-α) agonist, has been described to beneficially regulate inflammation in many mammalian cells. Here, we investigate the potential anti-inflammatory role of WY-14643 in lipopolysaccharide (LPS)-induced synovial fibroblasts. WY-14643 greatly inhibited the production of NO and PGE2 induced by LPS. In addition, the mRNA expression of intracellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), endothelin-1 (ET-1), and tissue factor (TF) was significantly suppressed by WY-14643, as well as the secretion of pro-inflammatory cytokines including interleukin-6 (IL-6), IL-1β, tumor necrosis factor-α (TNF-α), and monocyte chemotactic protein-1 (MCP-1). Furthermore, the transcription activity and nuclear translocation of NF-kB were found to be markedly decreased by WY-14643, while the phosphorylation of IkB was enhanced, indicating that the anti-inflammatory role of WY-14643 was meditated by NF-kB-dependent pathway. The application of WY-14643 failed to carry out its anti-inflammatory function in PPAR-α silenced cells, suggesting the role of PPAR-α. These findings may facilitate further studies investigating the translation of pharmacological PPAR-α activation into clinical therapy of OA.
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Affiliation(s)
- Degang Huang
- Department of Orthopedic Surgery, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui, People's Republic of China.
| | - Quanlai Zhao
- Department of Orthopedic Surgery, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Hongfei Liu
- Department of Orthopedic Surgery, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Yongjie Guo
- Department of Orthopedic Surgery, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui, People's Republic of China
| | - Hongguang Xu
- Department of Orthopedic Surgery, Yijishan Hospital, Wannan Medical College, Wuhu, Anhui, People's Republic of China.
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28
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Inhibition of VCAM-1 expression on mouse vascular smooth muscle cells by lobastin via downregulation of p38, ERK 1/2 and NF-κB signaling pathways. Arch Pharm Res 2015; 39:83-93. [DOI: 10.1007/s12272-015-0687-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 11/18/2015] [Indexed: 10/22/2022]
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29
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Hsu SY, Liou JW, Cheng TL, Peng SY, Lin CC, Chu YY, Luo WC, Huang ZK, Jiang SJ. beta-Naphthoflavone protects from peritonitis by reducing TNF-alpha-induced endothelial cell activation. Pharmacol Res 2015; 102:192-9. [PMID: 26453957 DOI: 10.1016/j.phrs.2015.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 10/01/2015] [Accepted: 10/02/2015] [Indexed: 01/06/2023]
Abstract
β-Naphthoflavone (β-NF), a ligand of the aryl hydrocarbon receptor, has been shown to possess anti-oxidative properties. We investigated the anti-oxidative and anti-inflammatory potential of β-NF in human microvascular endothelial cells treated with tumor necrosis factor-alpha (TNF-α). Pretreatment with β-NF significantly inhibited TNF-α-induced intracellular reactive oxygen species, translocation of p67(phox), and TNF-α-induced monocyte binding and transmigration. In addition, β-NF significantly inhibited TNF-α-induced ICAM-1 and VCAM-1 expression. The mRNA expression levels of the inflammatory cytokines TNF-α and IL-6 were reduced by β-NF, as was the infiltration of white blood cells, in a peritonitis model. The inhibition of adhesion molecules was associated with suppressed nuclear translocation of NF-κB p65 and Akt, and suppressed phosphorylation of ERK1/2 and p38. The translocation of Egr-1, a downstream transcription factor involved in the MEK-ERK signaling pathway, was suppressed by β-NF treatment. Our findings show that β-NF inhibits TNF-α-induced NF-kB and ERK1/2 activation and ROS generation, thereby suppressing the expression of adhesion molecules. This results in reduced adhesion and transmigration of leukocytes in vitro and prevents the infiltration of leukocytes in a peritonitis model. Our findings also suggest that β-NF might prevent TNF-α-induced inflammation.
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Affiliation(s)
- Sheng-Yao Hsu
- Department ofOphthalmology,ChinaMedicalUniversity-AnNan Hospital,Tainan,Taiwan.; School of Medicine, China Medical University, Taichung, Taiwan
| | - Je-Wen Liou
- Department of Biochemistry, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Tsung-Lin Cheng
- Department of Physiology, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Orthopaedic Research Center, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shih-Yi Peng
- Department of Biochemistry, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chi-Chen Lin
- Institute of Biomedical Sciences, College of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Yuan-Yuan Chu
- Postgraduate program in Biochemistry, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Wei-Cheng Luo
- Master program in Microbiology, Immunology and Biochemistry, School of Medicine Master Thesis, Tzu Chi University, Hualien, Taiwan
| | - Zheng-Kai Huang
- Bachelor in Department of Molecular Biology and Human Genetics, College of Life Sciences, Tzu Chi University, Hualien, Taiwan
| | - Shinn-Jong Jiang
- Department of Biochemistry, School of Medicine, Tzu Chi University, Hualien, Taiwan.
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30
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Gaddam RR, Ang AD, Badiei A, Chambers ST, Bhatia M. Alteration of the renin-angiotensin system in caerulein induced acute pancreatitis in the mouse. Pancreatology 2015; 15:647-53. [PMID: 26444748 DOI: 10.1016/j.pan.2015.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/28/2015] [Accepted: 09/15/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND The objective of this study was to determine if RAS bioactive enzymes and peptides are perturbed in acute pancreatitis and associated lung injury. METHODS The intervention group of mice were treated with ten hourly intraperitoneal (i.p.) injections of caerulein (50 μg/kg) to induce acute pancreatitis. Animals were euthanized, samples of pancreas, lung and blood were collected, and plasma was prepared and stored for subsequent analysis. ACE and ACE2 activities were determined by spectrofluorometric assay. ACE, ACE2, Ang II and Ang-(1-7) levels were quantified by ELISA. RESULTS There was a significant decrease in ACE2 enzymatic activity in pancreatic and lung tissues of mice with acute pancreatitis. In contrast, there were no significant changes in measured levels of ACE and ACE2 in the pancreas, and lung or activity of ACE in pancreatic and lung tissue following acute pancreatitis. There were no significant differences in the activities and levels of circulating ACE and ACE2 following acute pancreatitis. The ACE to ACE2 activity ratio was markedly increased in pancreatic and lung tissues of mice with acute pancreatitis. No significant changes were observed in the levels of Ang II except for a decrease in lung tissue. No changes were observed in Ang-(1-7) levels in pancreas, lung and plasma between the groups. The Ang II to Ang-(1-7) ratio was increased in the pancreas but was decreased in the lung following caerulein treatment. CONCLUSION These data suggest dysregulation of RAS in acute pancreatitis as evidenced by altered Ang II/Ang-(1-7) levels induced by the imbalance of ACE/ACE2 activity.
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Affiliation(s)
| | - Abel Damien Ang
- Department of Pathology, University of Otago, Christchurch, New Zealand
| | - Alireza Badiei
- Department of Pathology, University of Otago, Christchurch, New Zealand
| | | | - Madhav Bhatia
- Department of Pathology, University of Otago, Christchurch, New Zealand.
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31
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Muley MM, Reid AR, Botz B, Bölcskei K, Helyes Z, McDougall JJ. Neutrophil elastase induces inflammation and pain in mouse knee joints via activation of proteinase-activated receptor-2. Br J Pharmacol 2015; 173:766-77. [PMID: 26140667 DOI: 10.1111/bph.13237] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 06/05/2015] [Accepted: 06/30/2015] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AND PURPOSE Neutrophil elastase plays a crucial role in arthritis. Here, its potential in triggering joint inflammation and pain was assessed, and whether these effects were mediated by proteinase-activated receptor-2 (PAR2). EXPERIMENTAL APPROACH Neutrophil elastase (5 μg) was injected into the knee joints of mice and changes in blood perfusion, leukocyte kinetics and paw withdrawal threshold were assessed. Similar experiments were performed in animals pretreated with the neutrophil elastase inhibitor sivelestat, the PAR2 antagonist GB83, the p44/42 MAPK inhibitor U0126 and in PAR2 receptor knockout (KO) mice. Neutrophil elastase activity was also evaluated in arthritic joints by fluorescent imaging and sivelestat was assessed for anti-inflammatory and analgesic properties. KEY RESULTS Intra-articular injection of neutrophil elastase caused an increase in blood perfusion, leukocyte kinetics and a decrease in paw withdrawal threshold. Sivelestat treatment suppressed this effect. The PAR2 antagonist GB83 reversed neutrophil elastase-induced synovitis and pain and these responses were also attenuated in PAR2 KO mice. The MAPK inhibitor U0126 also blocked neutrophil elastase-induced inflammation and pain. Active neutrophil elastase was increased in acutely inflamed knees as shown by an activatable fluorescent probe. Sivelestat appeared to reduce neutrophil elastase activity, but had only a moderate anti-inflammatory effect in this model. CONCLUSIONS AND IMPLICATIONS Neutrophil elastase induced acute inflammation and pain in knee joints of mice. These changes are PAR2-dependent and appear to involve activation of a p44/42 MAPK pathway. Blocking neutrophil elastase, PAR2 and p44/42 MAPK activity can reduce inflammation and pain, suggesting their utility as therapeutic targets.
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Affiliation(s)
- Milind M Muley
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada
| | - Allison R Reid
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada
| | - Bálint Botz
- Department of Pharmacology and Pharmacotherapy, University of Pécs, School of Medicine, Pécs, Hungary.,János Szentágothai Research Centre, University of Pécs, Molecular Pharmacology Research Team, Pécs, Hungary
| | - Kata Bölcskei
- Department of Pharmacology and Pharmacotherapy, University of Pécs, School of Medicine, Pécs, Hungary.,János Szentágothai Research Centre, University of Pécs, Molecular Pharmacology Research Team, Pécs, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, School of Medicine, Pécs, Hungary.,MTA NAP B Pain Research Group, University of Pécs, School of Medicine, Pécs, Hungary.,János Szentágothai Research Centre, University of Pécs, Molecular Pharmacology Research Team, Pécs, Hungary
| | - Jason J McDougall
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada.,Department of Anaesthesia, Pain Management & Perioperative Medicine, Dalhousie University, Halifax, NS, Canada
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32
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Lin CC, Pan CS, Wang CY, Liu SW, Hsiao LD, Yang CM. Tumor necrosis factor-alpha induces VCAM-1-mediated inflammation via c-Src-dependent transactivation of EGF receptors in human cardiac fibroblasts. J Biomed Sci 2015; 22:53. [PMID: 26173590 PMCID: PMC4502472 DOI: 10.1186/s12929-015-0165-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 07/07/2015] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Tumor necrosis factor-α (TNF-α) is a proinflammatory cytokine and elevated in the regions of tissue injury and inflammatory diseases. The deleterious effects of TNF-α on fibroblasts may aggravate heart inflammation mediated through the up-regulation of adhesion molecules such as vascular cell adhesion molecule-1 (VCAM-1). However, the mechanisms underlying TNF-α-induced VCAM-1 expression in cardiac fibroblasts remain unknown. This study aimed to investigate the roles of TNF-α in VCAM-1 expression and its effects on human cardiac fibroblasts (HCFs). RESULTS The primary culture HCFs were used in this study. The results obtained with Western blotting, real time-quantitative PCR, and promoter activity analyses showed that TNF-α-induced VCAM-1 expression was mediated through TNF receptor (TNFR) 1-dependent gene up-regulation. Activation of TNFR1 by TNF-α transactivated c-Src-dependent EGF receptor (EGFR) linking to PI3K/Akt cascade, and then led to transcriptional activity of NF-κB. Moreover, the results of promoter reporter assay demonstrated that the phosphorylated p65 NF-κB turned on VCAM-1 gene expression. Subsequently, up-regulation of VCAM-1 promoted monocytes adhesion to HCFs challenged with TNF-α determined by cell adhesion assay. CONCLUSIONS Taken together, these results indicate that in HCFs, activation of NF-κB by c-Src-mediated transactivation of EGFR/PI3K/Akt cascade is required for TNF-α-induced VCAM-1 expression. Finally, increased VCAM-1 enhances monocytes adhering to HCFs challenged with TNF-α. Understanding the mechanisms of VCAM-1 up-regulated by TNF-α on HCFs may provide rationally therapeutic interventions for heart injury or inflammatory diseases.
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Affiliation(s)
- Chih-Chung Lin
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkuo, Kwei-Shan, Tao-Yuan, Taiwan.,College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chih-Shuo Pan
- Department of Physiology, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan.,Department of Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chen-Yu Wang
- Department of Physiology, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan.,Department of Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, Taiwan
| | - Shiau-Wen Liu
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkuo, Kwei-Shan, Tao-Yuan, Taiwan.,College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Li-Der Hsiao
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkuo, Kwei-Shan, Tao-Yuan, Taiwan.,College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chuen-Mao Yang
- Department of Physiology, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan. .,Department of Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, Taiwan.
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Chi PL, Chuang YC, Chen YW, Lin CC, Hsiao LD, Yang CM. The CO donor CORM-2 inhibits LPS-induced vascular cell adhesion molecule-1 expression and leukocyte adhesion in human rheumatoid synovial fibroblasts. Br J Pharmacol 2015; 171:2993-3009. [PMID: 24628691 DOI: 10.1111/bph.12680] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 12/15/2013] [Accepted: 12/24/2013] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND AND PURPOSE Infection with Gram-negative bacteria has been recognized as an initiator of rheumatoid arthritis, which is characterized by chronic inflammation and infiltration of immune cells. Carbon monoxide (CO) exhibits anti-inflammatory properties. Here we have investigated the detailed mechanisms of vascular cell adhesion molecule-1 (VCAM-1) expression induced by LPS and if CO inhibited LPS-induced leukocyte adhesion to synovial fibroblasts by suppressing VCAM-1 expression. EXPERIMENTAL APPROACH Human rheumatoid arthritis synovial fibroblasts (RASFs) were incubated with LPS and/or the CO-releasing compound CORM-2. Effects of LPS on VCAM-1 levels were determined by analysing mRNA expression, promoter activity, protein expression, and immunohistochemical staining. The molecular mechanisms were investigated by determining the expression, activation, and binding activity of transcriptional factors using target signal antagonists. KEY RESULTS CORM-2 significantly inhibited inflammatory responses in LPS-treated RASFs by down-regulating the expression of adhesion molecule VCAM-1 and leukocyte infiltration. The down-regulation of LPS-induced VCAM-1 expression involved inhibition of the expression of phosphorylated-NF-κB p65 and AP-1 (p-c-Jun, c-Jun and c-Fos mRNA levels). These results were confirmed by chromatin immunoprecipitation assay to detect NF-κB and AP-1 DNA binding activity. CONCLUSIONS AND IMPLICATIONS LPS-mediated formation of the TLR4/MyD88/TRAF6/c-Src complex regulated NF-κB and MAPKs/AP-1 activation leading to VCAM-1 expression and leukocyte adhesion. CORM-2, which liberates CO to elicit direct biological activities, attenuated LPS-induced VCAM-1 expression by interfering with NF-κB and AP-1 activation, and significantly reduced LPS-induced immune cell infiltration of the synovium.
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Affiliation(s)
- Pei-Ling Chi
- Department of Physiology and Pharmacology and Health Ageing Research Center, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
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Shu K, Kuang N, Zhang Z, Hu Z, Zhang Y, Fu Y, Min W. Therapeutic effect of daphnetin on the autoimmune arthritis through demethylation of proapoptotic genes in synovial cells. J Transl Med 2014; 12:287. [PMID: 25311560 PMCID: PMC4207889 DOI: 10.1186/s12967-014-0287-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 10/01/2014] [Indexed: 03/06/2023] Open
Abstract
Background We have previously reported that dephnetin is therapeutically effective in the treatment of rheumatoid arthritis (RA) in collagen-induced arthritis (CIA) rat model. However, the molecular mechanism and the effect of daphnetin on demethylating proapoptotic genes in the synovial cells remains further clarified. This study may provide a deeper insight into the medicinal application of daphnetin as a treatment for RA. Methods (1) The proliferation inhibition of CIA rat synovial cells was determined by an MTT (3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-di-phenyterazoliumromide) assay; (2) Methylation specific PCR (MSP) was used to measure the methylation of the proapoptotic genes DR3 (death receptor 3), PDCD5 (programmed cell death 5), FasL and p53; (3) Real time-PCR was performed to determine the mRNA expression of DR3, PDCD5, FasL, p53 and DNA methyltransferases (DNMTs) DNMT1, DNMT3a and DNMT3b; (4) Flow cytometry was applied to detect the protein expression of the DR3, PDCD5, FasL and p53; (5) The apoptotic rate of synovial cells was assessed by flow cytometry with Annexin V and propidium iodide (PI); (6) Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to observe the changes of CIA rat synovial cell structure. Results (1) In the range of 1.25 μg/mL to 40 μg/mL, daphnetin and 5-aza-dc had a dose-dependent and time-dependent degree of inhibition to the CIA rat synovial cells. (2) Daphnetin and 5-aza-dc had a demethylating role on the proapoptotic genes DR3, PDCD5, FasL and p53 of CIA rat synovial cells. (3) Daphnetin and 5-aza-dc decreased the gene expression of methyltransferases DNMT1, DNMT3a and DNMT3b, and increased expression of proapoptotic genes DR3, PDCD5, FasL and p53, which translated into an increased protein expression of DR3, PDCD5, FasL and p53. (4) Daphnetin and 5-aza-dc changed the structure of CIA rat synovial cells to show apoptotic changes and increased the rate of apoptosis. Conclusions Daphnetin can reduce the expression of DNMT1, DNMT3a and DNMT3b, which could result in the proapoptotic genes DR3, PDCD5, FasL and p53 being demethylated. Therefore, daphnetin can increase proapoptotic gene and protein expression resulting in structural apoptotic changes and an increase in early and late CIA rat synovial cell apoptosis.
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Affiliation(s)
- Kuanyong Shu
- Department of Immunology, Medical College of Nanchang University; Institute of Immunology and Immunotherapy, Nanchang University and Jiangxi Academy of Medical Sciences, Nanchang, China. .,Department of Gynecological Oncology, Jiangxi Maternity and Child Healthcare Hospital, Nanchang, China.
| | - Nanzhen Kuang
- Department of Immunology, Medical College of Nanchang University; Institute of Immunology and Immunotherapy, Nanchang University and Jiangxi Academy of Medical Sciences, Nanchang, China.
| | - Zhiqin Zhang
- Reproductive Center, Jiangxi Maternal and Child Health Care Hospital, Nanchang, China.
| | - Ziling Hu
- Affiliated Stomatological Hospital of Nanchang University, Nanchang, China.
| | - Yujuan Zhang
- Department of Immunology, Medical College of Nanchang University; Institute of Immunology and Immunotherapy, Nanchang University and Jiangxi Academy of Medical Sciences, Nanchang, China.
| | - Yingyuan Fu
- Department of Immunology, Medical College of Nanchang University; Institute of Immunology and Immunotherapy, Nanchang University and Jiangxi Academy of Medical Sciences, Nanchang, China.
| | - Weiping Min
- Department of Immunology, Medical College of Nanchang University; Institute of Immunology and Immunotherapy, Nanchang University and Jiangxi Academy of Medical Sciences, Nanchang, China.
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Meng Y, Yu CH, Li W, Li T, Luo W, Huang S, Wu PS, Cai SX, Li X. Angiotensin-converting enzyme 2/angiotensin-(1-7)/Mas axis protects against lung fibrosis by inhibiting the MAPK/NF-κB pathway. Am J Respir Cell Mol Biol 2014; 50:723-36. [PMID: 24168260 DOI: 10.1165/rcmb.2012-0451oc] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Accumulating evidence has demonstrated that up-regulation of the angiotensin (Ang)-converting enzyme (ACE)/AngII/AngII type 1 receptor (AT1R) axis aggravates pulmonary fibrosis. The recently discovered ACE2/Ang-(1-7)/Mas axis, which counteracts the activity of the ACE/AngII/AT1R axis, has been shown to protect against pulmonary fibrosis. However, the mechanisms by which ACE2 and Ang-(1-7) attenuate pulmonary fibrosis remain unclear. We hypothesized that up-regulation of the ACE2/Ang-(1-7)/Mas axis protects against bleomycin (BLM)-induced pulmonary fibrosis by inhibiting the mitogen-activated protein kinase (MAPK)/NF-κB pathway. In vivo, Ang-(1-7) was continuously infused into Wistar rats that had received BLM or AngII. In vitro, human fetal lung-1 cells were pretreated with compounds that block the activities of AT1R, Mas (A-779), and MAPKs before exposure to AngII or Ang-(1-7). The human fetal lung-1 cells were infected with lentivirus-mediated ACE2 before exposure to AngII. In vivo, Ang-(1-7) prevented BLM-induced lung fibrosis and AngII-induced lung inflammation by inhibiting the MAPK phosphorylation and NF-κB signaling cascades. However, exogenous Ang-(1-7) alone clearly promoted lung inflammation. In vitro, Ang-(1-7) and lentivirus-mediated ACE2 inhibited the AngII-induced MAPK/NF-κB pathway, thereby attenuating inflammation and α-collagen I production, which could be reversed by the Mas inhibitor, A-779. Ang-(1-7) inhibited AngII-induced lung fibroblast apoptotic resistance via inhibition of the MAPK/NF-κB pathway and activation of the BCL-2-associated X protein/caspase-dependent mitochondrial apoptotic pathway. Ang-(1-7) alone markedly stimulated extracellular signal-regulated protein kinase 1/2 phosphorylation and the NF-κB cascade. Up-regulation of the ACE2/Ang-(1-7)/Mas axis protected against pulmonary fibrosis by inhibiting the MAPK/NF-κB pathway. However, close attention should be paid to the proinflammatory effects of Ang-(1-7).
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Affiliation(s)
- Ying Meng
- 1 Department of Respiratory Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Qin Y, Chen Y, Wang W, Wang Z, Tang G, Zhang P, He Z, Liu Y, Dai SM, Shen Q. HMGB1-LPS complex promotes transformation of osteoarthritis synovial fibroblasts to a rheumatoid arthritis synovial fibroblast-like phenotype. Cell Death Dis 2014; 5:e1077. [PMID: 24556692 PMCID: PMC3944262 DOI: 10.1038/cddis.2014.48] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 01/18/2014] [Accepted: 01/20/2014] [Indexed: 12/29/2022]
Abstract
It is generally believed that some inflammatory antigens can recognize Toll-like receptors on synovial fibroblasts (SFs) and then activate downstream signals, leading to the formation of RASFs and inducing rheumatoid arthritis (RA). The objective of the current work was to study on the hypothesis that outer PAMP (LPS) binds to the inner DAMP (HMGB1) and becomes a complex that recognizes TLRs/RAGE on SFs, thus initiating a signaling cascade that leads to the secretion of inflammatory cytokines and chemokines, production of tissue-destructive enzymes, and formation of RASFs, finally resulting in RA. Osteoarthritis synovial fibroblasts (OASFs) were co-cultured with HMGB1–LPS complex in vitro for five generations to induce the transformation of human SFs to RA-like SFs (tOASFs). Then, changes of tOASFs in cell cycle and apoptosis–autophagy balance were investigated in vitro, and the pathogenicity of tOASFs was evaluated in a SCID mouse model in vivo. In vitro cell cycle analysis showed more tOASFs passing through the G1/S checkpoint and moving to S or G2 phase. Flow cytometry and confocal microscopy showed that apoptosis was reduced and autophagy was enhanced significantly in tOASFs as compared with those in OASFs. The expression of certain receptors and adhesion molecules in tOASFs was upregulated. In vivo experiments showed that tOASFs attached to, invaded, and degraded the co-implanted cartilage. In addition, histochemistry showed excessive proliferation of tOASFs and the expression of matrix metalloproteinases (MMPs). Based on the above findings, we conclude that HMGB1–LPS complex could promote the formation of RASFs.
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Affiliation(s)
- Y Qin
- Department of Laboratory Diagnosis, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - Y Chen
- Department of Laboratory Diagnosis, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - W Wang
- Department of Laboratory Medicine, Xinhua Hospital, Shanghai, China
| | - Z Wang
- Department of Orthopedics, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - G Tang
- Department of Laboratory Diagnosis, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - P Zhang
- Department of Laboratory Diagnosis, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - Z He
- Department of Laboratory Diagnosis, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - Y Liu
- Department of Rheumatology and Immunology, Changzheng Hospital of the Second Military Medical University, Shanghai, China
| | - S-M Dai
- Department of Rheumatology and Immunology, Changhai Hospital of the Second Military Medical University, Shanghai, China
| | - Q Shen
- Department of Laboratory Diagnosis, Changhai Hospital of the Second Military Medical University, Shanghai, China
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HO-1 induction by CO-RM2 attenuates TNF-α-induced cytosolic phospholipase A2 expression via inhibition of PKCα-dependent NADPH oxidase/ROS and NF-κB. Mediators Inflamm 2014; 2014:279171. [PMID: 24616552 PMCID: PMC3927740 DOI: 10.1155/2014/279171] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 11/14/2013] [Accepted: 11/22/2013] [Indexed: 12/27/2022] Open
Abstract
Rheumatoid arthritis (RA) is characterized by chronic inflammatory infiltration of the synovium and elevation of proinflammatory cytokines. Cytosolic phospholipase A2 (cPLA2) is involved in the development of inflammatory diseases. Heme oxygenase-1 (HO-1) has been shown to possess anti-inflammatory properties. The objective of the study was to investigate the detailed mechanisms of TNF-α-induced cPLA2 expression and to determine whether carbon monoxide releasing molecule-2 (CO-RM2) suppresses TNF-α-induced expression of NF-κB-related proinflammatory genes, including cPLA2, via HO-1 induction in RA synovial fibroblasts (RASFs). Here, we reported that TNF-α-induced cPLA2 expression was mediated through TNFR1/PKCα-dependent signaling pathways, including NADPH oxidase (NOX) activation/ROS production and NF-κB activation. CO-RM2 significantly suppressed TNF-α-induced cPLA2 expression by inhibiting the ROS generation and the phosphorylation of NF-κB p65 and IKKα/β, but not the phosphorylation of p38 MAPK and JNK1/2. These results were further confirmed by a ChIP assay to detect the NF-κB DNA-binding activity. Our results demonstrated that induction of HO-1 by CO-RM2 exerted anti-inflammatory and antioxidant effects which were required in concert to prevent the activation of NF-κB leading to induction of various inflammatory genes implicated in the pathogenesis of RA.
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Astragalus Polysaccharide Suppresses the Expression of Adhesion Molecules through the Regulation of the p38 MAPK Signaling Pathway in Human Cardiac Microvascular Endothelial Cells after Ischemia-Reperfusion Injury. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:280493. [PMID: 24302961 PMCID: PMC3835432 DOI: 10.1155/2013/280493] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 09/04/2013] [Accepted: 09/17/2013] [Indexed: 12/25/2022]
Abstract
Astragalus polysaccharide is a major component of radix astragali, a vital qi-reinforcing herb medicine with favorable immune-regulating effects. In a previous animal experiment, we demonstrated that astragalus polysaccharide effectively alleviates ischemia-reperfusion injury (IRI) of cardiac muscle through the regulation of the inflammatory reactions. However, the relationship between this herb and the cohesion molecules on the cell surface remains controversial. In this study, human cardiac microvascular endothelial cells (HCMECs) were used to validate the protective effects of astragalus under an IRI scheme simulated through hypoxia/reoxygenation in vitro. The results indicated that astragalus polysaccharide inhibited the cohesion between HCMECs and polymorphonuclear leukocyte (PMN) during IRI through the downregulation of p38 MAPK signaling and the reduction of cohesive molecule expression in HCMECs.
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Cardiovascular risk in rheumatoid arthritis: How to lower the risk? Atherosclerosis 2013; 231:163-72. [DOI: 10.1016/j.atherosclerosis.2013.09.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 08/30/2013] [Accepted: 09/08/2013] [Indexed: 12/21/2022]
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Julovi SM, Shen K, Mckelvey K, Minhas N, March L, Jackson CJ. Activated protein C inhibits proliferation and tumor necrosis factor α-stimulated activation of p38, c-Jun NH2-terminal kinase (JNK) and Akt in rheumatoid synovial fibroblasts. Mol Med 2013; 19:324-31. [PMID: 24096826 DOI: 10.2119/molmed.2013.00034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Accepted: 09/19/2013] [Indexed: 11/06/2022] Open
Abstract
Synovial fibroblast proliferation is a hallmark of the invasive pannus in the rheumatoid joint. Activated protein C (APC) is a natural anticoagulant that exerts antiinflammatory and cyto-protective effects in various diseases via endothelial protein C receptor (EPCR) and proteinase-activated receptor (PAR)-mediated pathways. In this study, we investigated the effect and the underlying cellular signaling mechanisms of APC on proliferation of human rheumatoid synovial fibroblasts (RSFs). We found that APC stimulated proliferation of mouse dermal fibroblasts (MDFs) and normal human dermal fibroblasts (HDFs) by up to 60%, but robustly downregulated proliferation of RSFs. APC induced the phosphorylation of extracellular signal-regulated protein kinase (ERK) and enhanced expression of p21 and p27 in a dose-dependent manner in RSFs. The latter effect was inhibited by pre-treatment with the ERK inhibitors PD98059 and U0126 but not by p38 inhibitor SB203580. In addition, APC significantly downregulated tumor necrosis factor (TNF)α-stimulated cell proliferation and activation of p38, c-Jun NH2-terminal kinase (JNK) and Akt in RSFs. These results provide the first evidence that APC selectively inhibits proliferation and the inflammatory signaling pathways of RSFs. Thus, APC may reduce synovial hyperplasia and pannus invasion in rheumatoid arthritis.
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Affiliation(s)
- Sohel M Julovi
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia.,Department of Surgery, Kolling Institute of Medical Research, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Kaitlin Shen
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Kelly Mckelvey
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Nikita Minhas
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Lyn March
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
| | - Christopher J Jackson
- Sutton Arthritis Research Laboratories, Sydney Medical School, The University of Sydney at Royal North Shore Hospital, St Leonards, Australia
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Kong X, Liu C, Zhang C, Zhao J, Wang J, Wan H, Zhu H, Zhang P, Chen W, Xiao Y, Lin N. The suppressive effects of Saposhnikovia divaricata (Fangfeng) chromone extract on rheumatoid arthritis via inhibition of nuclear factor-κB and mitogen activated proteinkinases activation on collagen-induced arthritis model. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:842-850. [PMID: 23711830 DOI: 10.1016/j.jep.2013.05.023] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 05/07/2013] [Accepted: 05/15/2013] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Saposhnikovia divaricata (SD), called "Fangfeng" in China, is commonly used in clinical compound prescription for treatment of rheumatoid arthritis (RA), but its actions on RA have not been clarified. The present study aims to determine the anti-inflammatory activity of SD chromone extract (SCE), the major bioactive component of SD, on collagen-induced arthritis (CIA) rats, and elucidate its underlying mechanisms with regards to its molecular basis of action on human fibroblast-like synoviocytes derived from RA patients (HFLS-RA). MATERIALS AND METHODS CIA model on rats was constructed by injection of bovine type II collagen. Rats were pre-treated with different dosages of SCE from 3 days before till 35 days after model building. The progression of CIA was evaluated by macroscopic scoring, X-ray observation and hematoxylin and eosin (HE) staining of paws. HFLS-RA were pre-treated with different concentrations of SCE prior to stimulation with 10 ng/ml of tumor necrosis factor (TNF) α. By radioimmunoassay (RIA) and enzyme-linked immunosorbent assay (ELISA), levels of interleukin (IL)-1β, IL-6, TNFα and prostaglandin E2 (PGE2) were quantified respectively. Nuclear factor (NF-κB) p65 expression and DNA-binding activity were tested by immunohistochemisty and electrophoretic mobility shift assay (EMSA) respectively. Phosphorylation of extracellular signal-regulated kinase (ERK), Jun N-terminal kinase (JNK) and p38 MAPKs were examined by immunohistochemisty staining and western blot analysis. RESULTS Histological examination and radiological observation demonstrated that SCE significantly reduced the inflammatory responses in the joints of CIA rats. SCE inhibited the production of TNFα, IL-1β, and IL-6 in the joint tissues and sera. The level of PGE2 in sera was also decreased by SCE. Moreover, SCE treatment in vivo was able to reduce protein level of NF-κB, the transcriptional factor closely related to the inflammatory process, in articular synovium and cartilage of CIA rats. In addition, SCE inhibited p-ERK, p-JNK and p-p38 expression, which were considered to be involved in the phosphorylation of transcription factor NF-κB and the transcription of pro-inflammatory factors. Further, SCE inhibited NF-κB DNA binding activity and attenuated the phosphorylation of ERK, JNK and p38 MAPKs, in a concentration-dependent manner in cultured HFLS-RA. CONCLUSION These results highlight the anti-arthritic potential of SCE, and provide further evidence of the involvement of the NF-κB and MARKs inhibition in the effects of SCE.
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Affiliation(s)
- Xiangying Kong
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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Rahimi H, Maurer K, Song L, Akhter E, Petri M, Sullivan KE. Aberrant regulation of the integrin very late antigen-4 in systemic lupus erythematosus. Lupus 2013; 22:297-306. [PMID: 23439470 DOI: 10.1177/0961203313475691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Integrin very late antigen-4 (VLA4) is induced during inflammation and can regulate monocyte migration. It has been implicated in atherogenesis, a significant concern in systemic lupus erythematosus (SLE). The aim of this study was to define VLA4 expression in SLE monocytes. Flow cytometry, reverse transcription polymerase chain reaction, Western blotting, and immunohistochemistry staining with confocal microscopy were used to evaluate VLA4 expression in SLE patients and controls. We found elevated expression of VLA4 in SLE patients with significantly increased VLA4 staining intracellularly compared to control. Exposure of control monocytes to SLE sera or immune complexes led to increased intracellular expression, and immune complexes were capable of driving redistribution of surface VLA4 to the cytoplasm. Therefore, VLA4 was found to be subject to complex regulation with SLE sera driving both RNA expression and redistribution of protein. Stimulation of SLE monocytes with a VLA4 ligand induced significant TNFα expression, confirming a functional effect. This behavior may contribute to increased atherosclerosis and monocyte infiltrates in end organs.
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Affiliation(s)
- H Rahimi
- Department of Pediatrics, The Children's Hospital of Philadelphia, PA, USA
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Duan M, Yao H, Hu G, Chen X, Lund AK, Buch S. HIV Tat induces expression of ICAM-1 in HUVECs: implications for miR-221/-222 in HIV-associated cardiomyopathy. PLoS One 2013; 8:e60170. [PMID: 23555914 PMCID: PMC3610892 DOI: 10.1371/journal.pone.0060170] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 02/21/2013] [Indexed: 12/11/2022] Open
Abstract
Cardiac involvement is a well-documented complication of human immunodeficiency virus-1 (HIV-1) infection. Previous studies have demonstrated increased adhesion of monocytes to human vascular endothelial cells in HIV-infected individuals. HIV Tat protein, which is the transactivator of transcription (Tat), plays a key role in activating endothelial cells. In the present study, we demonstrated that exposure of HUVECs to HIV Tat protein resulted in induced expression of cell adhesion molecules specifically ICAM-1, leading to increased adhesion of monocytes to the endothelium. This effect of Tat was mediated through activation of mitogen-activated protein kinases and downstream transcription factor NF-κB. Increased expression of ICAM-1 was regulated by microRNA (miRNA) miR-221 and to some extent by miR-222, both of which are known to target ICAM-1. Functional inhibition of the respective miRNAs with anti-miR oligonucleotides resulted in induction of ICAM-1 protein in HUVECs. Furthermore, Tat-stimulated regulation of ICAM-1 via miR-221/-222 involved the NF-kB-dependent pathway. Functional implication and specificity of up-regulated ICAM-1 was confirmed using the ICAM-1 neutralizing antibody in the in vitro cell adhesion assays. These findings were further confirmed in vivo using the HIV transgenic (Tg) rats. These animals not only demonstrated increased expression of ICAM-1 mRNA, with a concomitant reduction in the expression of miR-221 in the aorta and heart, but also had increased expression of the ICAM-1 protein that was predominantly in the endothelial cell layer. Taken together, these findings implicate that Tat-mediated induction of ICAM-1 expression plays a critical role in monocyte adhesion observed in HIV-1-associated cardiomyopathies.
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Affiliation(s)
- Ming Duan
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- Key Laboratory for Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
| | - Honghong Yao
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Guoku Hu
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, Nebraska, United States of America
| | - XianMing Chen
- Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, Nebraska, United States of America
| | - Amie K. Lund
- Cardiopulmonary and Environmental Toxicology Department, Lovelace Respiratory Research Institute, Albuquerque, New Mexico, United States of America
| | - Shilpa Buch
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- * E-mail:
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Chi PL, Luo SF, Hsieh HL, Lee IT, Hsiao LD, Chen YL, Yang CM. Cytosolic phospholipase A2 induction and prostaglandin E2 release by interleukin-1β via the myeloid differentiation factor 88-dependent pathway and cooperation of p300, Akt, and NF-κB activity in human rheumatoid arthritis synovial fibroblasts. ACTA ACUST UNITED AC 2013; 63:2905-17. [PMID: 21702012 DOI: 10.1002/art.30504] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Cytosolic phospholipase A2 (cPLA2) is a rate-limiting enzyme that plays a critical role in the biosynthesis of eicosanoids. The aim of this study was to investigate the mechanisms underlying interleukin-1β (IL-1β)-induced cPLA2 expression in human rheumatoid arthritis synovial fibroblasts (RASFs). METHODS Synovial tissue was obtained from patients with RA who were undergoing joint replacement surgery. In a mouse model of IL-1β-mediated inflammatory arthritis, neutrophil infiltration, bone erosion, and cPLA2 expression in ankle synovium were analyzed by immunohistochemistry. IL-1β-induced cPLA2 expression was determined by Western blotting, real-time polymerase chain reaction, and gene promoter assay using pharmacologic inhibitors and transfection with short hairpin RNAs or small interfering RNAs. The recruitment of NF-κB and p300 to the cPLA2 promoter was determined by chromatin immunoprecipitation assay. Prostaglandin E2 (PGE2) biosynthesis was evaluated by enzyme-linked immunosorbent assay. RESULTS IL-1β-induced cPLA2 expression and PGE2 release were mediated through a myeloid differentiation factor 88 (MyD88)/c-Src-dependent matrix metalloproteinase (MMP)/heparin-binding epidermal growth factor (HB-EGF) cascade linking to transactivation of the EGF receptor (EGFR)/phosphatidylinositol 3-kinase (PI 3-kinase)/Akt, p300, and NF-κB p65 pathways. IL-1β also stimulated Akt phosphorylation and nuclear translocation. Activation of Akt eventually led to the acetylation of histone residues by phosphorylation and recruitment of p300 and enhanced its histone acetyltransferase activity on the NF-κB elements of the cPLA2 promoter. IL-1β-induced NF-κB transcriptional activity was mediated through a PI 3-kinase/Akt-dependent cascade. Up-regulation of cPLA2 by IL-1β increased PGE(2) biosynthesis in RASFs. CONCLUSION IL-1β-induced cPLA2 expression is mediated through activation of the MyD88/c-Src, MMP/HB-EGF, EGFR/PI 3-kinase/Akt, p300, and NF-κB pathways. These results provide insights into the mechanisms underlying IL-1β-enhanced joint inflammatory responses in RA and may inspire new targeted therapeutic approaches.
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Affiliation(s)
- Pei-Ling Chi
- Department of Pharmacology, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan
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Cook-Mills JM. Isoforms of Vitamin E Differentially Regulate PKC α and Inflammation: A Review. ACTA ACUST UNITED AC 2013; 4. [PMID: 23977443 DOI: 10.4172/2155-9899.1000137] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Vitamin E regulation of disease has been extensively studied but most studies focus on the α-tocopherol isoform of vitamin E. These reports indicate contradictory outcomes for anti-inflammatory functions of the α-tocopherol isoform of vitamin E with regards to animal and clinical studies. These seemingly disparate results are consistent with our recent studies demonstrating that purified natural forms of vitamin E have opposing regulatory functions during inflammation. In this review, we discuss that α-tocopherol inhibits whereas γ-tocopherol elevates allergic inflammation, airway hyperresponsiveness, leukocyte transendothelial migration, and endothelial cell adhesion molecule signaling through protein kinase Cα. Moreover, we have demonstrated that α-tocopherol is an antagonist and γ-tocopherol is an agonist of PKCα through direct binding to a regulatory domain of PKCα. In summary, we have determined mechanisms for opposing regulatory functions of α-tocopherol and γ-tocopherol on inflammation. Information from our studies will have significant impact on the design of clinical studies and on vitamin E consumption.
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Affiliation(s)
- Joan M Cook-Mills
- Allergy-Immunology Division, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Lin YM, Hsu CJ, Liao YY, Chou MC, Tang CH. The CCL2/CCR2 axis enhances vascular cell adhesion molecule-1 expression in human synovial fibroblasts. PLoS One 2012. [PMID: 23185512 PMCID: PMC3503714 DOI: 10.1371/journal.pone.0049999] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background Chemokine ligand 2 (CCL2), also known as monocyte chemoattractant protein-1 (MCP-1), belongs to the CC chemokine family that is associated with the disease status and outcomes of osteoarthritis (OA). Here, we investigated the intracellular signaling pathways involved in CCL2-induced vascular cell adhesion molecule-1 (VCAM-1) expression in human OA synovial fibroblasts (OASFs). Methodology/Principal Findings Stimulation of OASFs with CCL2 induced VCAM-1 expression. CCL2-mediated VCAM-1 expression was attenuated by CCR2 inhibitor (RS102895), PKCδ inhibitor (rottlerin), p38MAPK inhibitor (SB203580), and AP-1 inhibitors (curcumin and tanshinone IIA). Stimulation of cells with CCL2 increased PKCδ and p38MAPK activation. Treatment of OASFs with CCL2 also increased the c-Jun phosphorylation and c-Jun binding to the AP-1 element on the VCAM-1 promoter. Moreover, CCL2-mediated CCR2, PKCδ, p38MAPK, and AP-1 pathway promoted the adhesion of monocytes to the OASFs monolayer. Conclusions/Significance Our results suggest that CCL2 increases VCAM-1 expression in human OASFs via the CCR2, PKCδ, p38MAPK, c-Jun, and AP-1 signaling pathway. The CCL2-induced VCAM-1 expression promoted monocytes adhesion to human OASFs.
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Affiliation(s)
- Yu-Min Lin
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Orthopedic Surgery, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Chin-Jung Hsu
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- Department of Orthopaedics, China Medical University Hospital, Taichung, Taiwan
| | - Yuan-Ya Liao
- Department of Surgery, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Ming-Chih Chou
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- * E-mail: (CHT); (MCC)
| | - Chih-Hsin Tang
- Department of Pharmacology, School of Medicine, China Medical University, Taichung, Taiwan
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
- * E-mail: (CHT); (MCC)
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Durrani Z, Weir W, Pillai S, Kinnaird J, Shiels B. Modulation of activation-associated host cell gene expression by the apicomplexan parasite Theileria annulata. Cell Microbiol 2012; 14:1434-54. [PMID: 22533473 PMCID: PMC3532605 DOI: 10.1111/j.1462-5822.2012.01809.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 03/29/2012] [Accepted: 04/19/2012] [Indexed: 12/29/2022]
Abstract
Infection of bovine leucocytes by Theileria annulata results in establishment of transformed, infected cells. Infection of the host cell is known to promote constitutive activation of pro-inflammatory transcription factors that have the potential to be beneficial or detrimental. In this study we have compared the effect of LPS activation on uninfected bovine leucocytes (BL20 cells) and their Theileria-infected counterpart (TBL20). Gene expression profiles representing activated uninfected BL20 relative to TBL20 cells were also compared. The results show that while prolonged stimulation with LPS induces cell death and activation of NF-κB in BL20 cells, the viability of Theileria-infected cells was unaffected. Analysis of gene expression networks provided evidence that the parasite establishes tight control over pathways associated with cellular activation by modulating reception of extrinsic stimuli and by significantly altering the expression outcome of genes targeted by infection-activated transcription factors. Pathway analysis of the data set identified novel candidate genes involved in manipulation of cellular functions associated with the infected transformed cell. The data indicate that the T. annulata parasite can irreversibly reconfigure host cell gene expression networks associated with development of inflammatory disease and cancer to generate an outcome that is beneficial to survival and propagation of the infected leucocyte.
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Affiliation(s)
- Zeeshan Durrani
- Institute of Infection, Immunity & Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G61 1QH, Scotland, UK
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Glant TT, Adarichev VA, Boldizsar F, Besenyei T, Laszlo A, Mikecz K, Rauch TA. Disease-promoting and -protective genomic loci on mouse chromosomes 3 and 19 control the incidence and severity of autoimmune arthritis. Genes Immun 2012; 13:336-45. [PMID: 22402741 DOI: 10.1038/gene.2012.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Proteoglycan (PG)-induced arthritis (PGIA) is a murine model of rheumatoid arthritis. Arthritis-prone BALB/c mice are 100% susceptible, whereas the major histocompatibility complex-matched DBA/2 strain is completely resistant to PGIA. To reduce the size of the disease-suppressive loci for sequencing and to find causative genes of arthritis, we created a set of BALB/c.DBA/2-congenic/subcongenic strains carrying DBA/2 genomic intervals overlapping the entire Pgia26 locus on chromosome 3 (chr3) and Pgia23/Pgia12 loci on chr19 in the arthritis-susceptible BALB/c background. Upon immunization of these subcongenic strains and their wild-type (BALB/c) littermates, we identified a major Pgia26a sublocus on chr3 that suppressed disease onset, incidence and severity via controlling the complex trait of T-cell responses. The region was reduced to 3 Mbp (11.8 Mbp with flanking regions) in size and contained gene(s) influencing the production of a number of proinflammatory cytokines. Additionally, two independent loci (Pgia26b and Pgia26c) suppressed the clinical scores of arthritis. The Pgia23 locus (∼3 Mbp in size) on chr19 reduced arthritis susceptibility and onset, and the Pgia12 locus (6 Mbp) associated with low arthritis severity. Thus, we have reached the critical sizes of arthritis-associated genomic loci on mouse chr3 and chr19, which are ready for high-throughput sequencing of genomic DNA.
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Affiliation(s)
- T T Glant
- Department of Orthopedic Surgery, Section of Molecular Medicine, Rush University Medical Center, Chicago, IL 60612, USA.
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Li W, Wang W, Sun S, Sun Y, Pan Y, Wang L, Zhang R, Zhang K, Li J. Autoantibodies against the catalytic domain of BRAF are not specific serum markers for rheumatoid arthritis. PLoS One 2011; 6:e28975. [PMID: 22174938 PMCID: PMC3236235 DOI: 10.1371/journal.pone.0028975] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Accepted: 11/17/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Autoantibodies to the catalytic domain of v-raf murine sarcoma viral oncogene homologue B1 (BRAF) have been recently identified as a new family of autoantibodies involved in rheumatoid arthritis (RA). The objective of this study was to determine antibody responses to the catalytic domain of BRAF in RA and other autoimmune diseases. The association between RA-related clinical indices and these antibodies was also assessed. METHODOLOGY/PRINCIPAL FINDINGS The presence of autoantibodies to the catalytic domain of BRAF (anti-BRAF) or to peptide P25 (amino acids 656-675 of the catalytic domain of BRAF; anti-P25) was determined in serum samples from patients with RA, primary Sjögren's syndrome (pSS), systemic lupus erythematosus (SLE), and healthy controls by using indirect enzyme-linked immunosorbent assays (ELISAs) based on the recombinant catalytic domain of BRAF or a synthesized peptide, respectively. Associations of anti-BRAF or anti-P25 with disease variables of RA patients were also evaluated. Our results show that the BRAF-specific antibodies anti-BRAF and anti-P25 are equally present in RA, pSS, and SLE patients. However, the erythrocyte sedimentation rate (ESR) used to detect inflammation was significantly different between patients with and without BRAF-specific antibodies. The anti-BRAF-positive patients were found to have prolonged disease, and active disease occurred more frequently in anti-P25-positive patients than in anti-P25-negative patients. A weak but significant correlation between anti-P25 levels and ESRs was observed (r = 0.319, p = 0.004). CONCLUSIONS/SIGNIFICANCE The antibody response against the catalytic domain of BRAF is not specific for RA, but the higher titers of BRAF-specific antibodies may be associated with increased inflammation in RA.
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Affiliation(s)
- Wenli Li
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Wei Wang
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Shipeng Sun
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Yu Sun
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Yang Pan
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
- Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Lunan Wang
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
| | - Rui Zhang
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
| | - Kuo Zhang
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
| | - Jinming Li
- National Center for Clinical Laboratories, Beijing Hospital, Beijing, People's Republic of China
- * E-mail:
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Cook-Mills JM, Marchese ME, Abdala-Valencia H. Vascular cell adhesion molecule-1 expression and signaling during disease: regulation by reactive oxygen species and antioxidants. Antioxid Redox Signal 2011; 15:1607-38. [PMID: 21050132 PMCID: PMC3151426 DOI: 10.1089/ars.2010.3522] [Citation(s) in RCA: 367] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The endothelium is immunoregulatory in that inhibiting the function of vascular adhesion molecules blocks leukocyte recruitment and thus tissue inflammation. The function of endothelial cells during leukocyte recruitment is regulated by reactive oxygen species (ROS) and antioxidants. In inflammatory sites and lymph nodes, the endothelium is stimulated to express adhesion molecules that mediate leukocyte binding. Upon leukocyte binding, these adhesion molecules activate endothelial cell signal transduction that then alters endothelial cell shape for the opening of passageways through which leukocytes can migrate. If the stimulation of this opening is blocked, inflammation is blocked. In this review, we focus on the endothelial cell adhesion molecule, vascular cell adhesion molecule-1 (VCAM-1). Expression of VCAM-1 is induced on endothelial cells during inflammatory diseases by several mediators, including ROS. Then, VCAM-1 on the endothelium functions as both a scaffold for leukocyte migration and a trigger of endothelial signaling through NADPH oxidase-generated ROS. These ROS induce signals for the opening of intercellular passageways through which leukocytes migrate. In several inflammatory diseases, inflammation is blocked by inhibition of leukocyte binding to VCAM-1 or by inhibition of VCAM-1 signal transduction. VCAM-1 signal transduction and VCAM-1-dependent inflammation are blocked by antioxidants. Thus, VCAM-1 signaling is a target for intervention by pharmacological agents and by antioxidants during inflammatory diseases. This review discusses ROS and antioxidant functions during activation of VCAM-1 expression and VCAM-1 signaling in inflammatory diseases.
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Affiliation(s)
- Joan M Cook-Mills
- Allergy-Immunology Division, Northwestern University Feinberg School of Medicine, 240 E Huron, Chicago, IL 60611, USA.
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