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Ruffer N, Tomas NM, Schmiedel S, Jordan S, Kötter I. [Visceral leishmaniasis mimicking Felty's syndrome in rheumatoid arthritis treated with methotrexate and etanercept]. Z Rheumatol 2021. [PMID: 34633502 DOI: 10.1007/s00393-021-01105-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2021] [Indexed: 10/20/2022]
Abstract
Visceral leishmaniasis (VL) is a chronic parasitic disease caused by pathogens of the genus Leishmania, which can mimic numerous diseases. The leading symptoms of VL (splenomegaly, pancytopenia, fever) can be misinterpreted, especially if autoantibodies are detected, and lead to the misdiagnosis of an underlying rheumatic disease (e.g. systemic lupus erythematosus, Felty's syndrome). Proinflammatory cytokines such as tumour necrosis factor alpha (TNF-α) play an important role in infection control. In this context, there are increasing reports of VL as an opportunistic infection during treatment with anti-TNF‑α agents. A case of VL mimicking Felty's syndrome in a patient with rheumatoid arthritis treated with methotrexate and etanercept is presented.
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Defendenti C, Tarkowski M, Borille S, Cassinotti A, Massari A, Birindelli S, Riva A, Ardizzone S, Panteghini M. Anti-tumour necrosis factor α antibodies and circulating lymphocyte phenotypes in inflammatory bowel disease. Int Immunopharmacol 2021; 100:108081. [PMID: 34461492 DOI: 10.1016/j.intimp.2021.108081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/20/2021] [Accepted: 08/16/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Circulating lymphocyte subtypes are not fully explored parameters for monitoring chronic T cell activation during inflammatory bowel disease (IBD). Tumor necrosis factor α (TNFα), one of the main mediators of IBD related inflammation induces expression of CD70 on T cells. CD70 limits T cell expansion and controls CD27 receptor on activated B lymphocytes. Aim of this study was to assess the number and the frequency of CD70+ T cells and CD27+ B cells in IBD patients during inactive phase of the disease under or without anti-TNFα treatment. DESIGN We studied 91 patients with inactive IBD, 31 untreated, 29 treated with infliximab (IFX), and 31 treated with adalimumab (ADA). Lymphocyte phenotypes were assessed by flow cytometry using anti-CD45, CD19, CD27, CD3, and CD70 monoclonal antibodies. IFX and ADA actual capacity of TNFα neutralization in serum was estimated by the recoveryELISA technique. RESULTS Whereas CD3+ T cells were increased in treated compared to untreated patients, the percentage of the CD70+ T cells was significantly lower in treated patients indicating a 'cooling' effect of the biological therapy. This effect differs between samples according to the therapeutic range of the circulating drug. Although the CD19+ B-cell percentage tended to be lower in treated patients, CD19+27+ memory B cells did not show significant differences between groups. CONCLUSIONS Frequency of peripheral blood CD70+ T cells was significantly reduced by treatment with anti-TNFα antibodies. Monitoring of this parameter of T cells can give better insight to the disease progression and therapy application in IBD patients.
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Affiliation(s)
| | - Maciej Tarkowski
- Department of Clinical and Biomedical Sciences 'Luigi Sacco', University of Milan, Milan, Italy
| | - Simona Borille
- Clinical Pathology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy
| | | | | | - Sarah Birindelli
- Clinical Pathology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy
| | - Agostino Riva
- Infectious Disease Unit, ASST Fatebenefratelli-Sacco, Milan, Italy; Department of Clinical and Biomedical Sciences 'Luigi Sacco', University of Milan, Milan, Italy
| | - Sandro Ardizzone
- Gastroenterology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy; Department of Clinical and Biomedical Sciences 'Luigi Sacco', University of Milan, Milan, Italy
| | - Mauro Panteghini
- Clinical Pathology Unit, ASST Fatebenefratelli-Sacco, Milan, Italy; Department of Clinical and Biomedical Sciences 'Luigi Sacco', University of Milan, Milan, Italy
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Michel L, Helfrich I, Hendgen-Cotta UB, Mincu RI, Korste S, Mrotzek SM, Spomer A, Odersky A, Rischpler C, Herrmann K, Umutlu L, Coman C, Ahrends R, Sickmann A, Löffek S, Livingstone E, Ugurel S, Zimmer L, Gunzer M, Schadendorf D, Totzeck M, Rassaf T. Targeting early stages of cardiotoxicity from anti-PD1 immune checkpoint inhibitor therapy. Eur Heart J 2021; 43:316-329. [PMID: 34389849 DOI: 10.1093/eurheartj/ehab430] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/25/2021] [Accepted: 06/25/2021] [Indexed: 12/13/2022] Open
Abstract
AIMS Cardiac immune-related adverse events (irAEs) from immune checkpoint inhibition (ICI) targeting programmed death 1 (PD1) are of growing concern. Once cardiac irAEs become clinically manifest, fatality rates are high. Cardio-oncology aims to prevent detrimental effects before manifestation of severe complications by targeting early pathological changes. We therefore aimed to investigate early consequences of PD1 inhibition for cardiac integrity to prevent the development of overt cardiac disease. METHODS AND RESULTS We investigated cardiac-specific consequences from anti-PD1 therapy in a combined biochemical and in vivo phenotyping approach. Mouse hearts showed broad expression of the ligand PDL1 on cardiac endothelial cells as a main mediator of immune-crosstalk. Using a novel melanoma mouse model, we assessed that anti-PD1 therapy promoted myocardial infiltration with CD4+ and CD8+ T cells, the latter being markedly activated. Left ventricular (LV) function was impaired during pharmacological stress, as shown by pressure-volume catheterization. This was associated with a dysregulated myocardial metabolism, including the proteome and the lipidome. Analogous to the experimental approach, in patients with metastatic melanoma (n = 7) receiving anti-PD1 therapy, LV function in response to stress was impaired under therapy. Finally, we identified that blockade of tumour necrosis factor alpha (TNFα) preserved LV function without attenuating the anti-cancer efficacy of anti-PD1 therapy. CONCLUSIONS Anti-PD1 therapy induces a disruption of cardiac immune homeostasis leading to early impairment of myocardial functional integrity, with potential prognostic effects on the growing number of treated patients. Blockade of TNFα may serve as an approach to prevent the manifestation of ICI-related cardiotoxicity.
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Affiliation(s)
- Lars Michel
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Iris Helfrich
- Department of Dermatology, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany.,German Cancer Consortium (DKTK), Partner Site Essen/Düsseldorf, Essen 45147, Germany.,Medical Faculty of the Ludwig Maximilian University of Munich, Department of Dermatology and Allergology, Frauenlobstrasse 9-11, Munich 80377, Germany
| | - Ulrike Barbara Hendgen-Cotta
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Raluca-Ileana Mincu
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Sebastian Korste
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Simone Maria Mrotzek
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Armin Spomer
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Andrea Odersky
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Christoph Rischpler
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Ken Herrmann
- Department of Nuclear Medicine, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Lale Umutlu
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Cristina Coman
- Institute for Analytical Chemistry, Waehringer Straße 38, Vienna A-1090, Austria.,Leibniz Institut für Analytische Wissenschaften-ISAS-e.V., Otto-Hahn-Straße 6b, Dortmund 44227, Germany
| | - Robert Ahrends
- Institute for Analytical Chemistry, Waehringer Straße 38, Vienna A-1090, Austria.,Leibniz Institut für Analytische Wissenschaften-ISAS-e.V., Otto-Hahn-Straße 6b, Dortmund 44227, Germany
| | - Albert Sickmann
- Leibniz Institut für Analytische Wissenschaften-ISAS-e.V., Otto-Hahn-Straße 6b, Dortmund 44227, Germany.,Medizinische Fakultät, Medizinisches Proteom-Center (MPC), Ruhr-Universität Bochum, Bochum 44801, Germany.,Department of Chemistry, College of Physical Sciences, University of Aberdeen, Aberdeen AB243FX, Scotland
| | - Stefanie Löffek
- Department of Dermatology, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany.,German Cancer Consortium (DKTK), Partner Site Essen/Düsseldorf, Essen 45147, Germany
| | - Elisabeth Livingstone
- Department of Dermatology, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany.,German Cancer Consortium (DKTK), Partner Site Essen/Düsseldorf, Essen 45147, Germany
| | - Selma Ugurel
- Department of Dermatology, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany.,German Cancer Consortium (DKTK), Partner Site Essen/Düsseldorf, Essen 45147, Germany
| | - Lisa Zimmer
- Department of Dermatology, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany.,German Cancer Consortium (DKTK), Partner Site Essen/Düsseldorf, Essen 45147, Germany
| | - Matthias Gunzer
- Leibniz Institut für Analytische Wissenschaften-ISAS-e.V., Otto-Hahn-Straße 6b, Dortmund 44227, Germany.,Institute for Experimental Immunology and Imaging, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Dirk Schadendorf
- Department of Dermatology, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany.,German Cancer Consortium (DKTK), Partner Site Essen/Düsseldorf, Essen 45147, Germany
| | - Matthias Totzeck
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
| | - Tienush Rassaf
- Department of Cardiology and Vascular Medicine, West German Heart and Vascular Center, University Hospital Essen, Hufelandstraße 55, Essen 45147, Germany
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Erus S, Öztürk AB, Albayrak Ö, İncir S, Kapdağlı MH, Cesur EE, Yavuz Ö, Tanju S, Dilege Ş. Immune profiling after minimally invasive lobectomy. Interact Cardiovasc Thorac Surg 2021; 32:291-297. [PMID: 33313777 DOI: 10.1093/icvts/ivaa296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/20/2020] [Accepted: 10/24/2020] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Whether acute phase and immune responses are minimally affected following minimally invasive lung surgery needs further investigation. We performed a pilot study to evaluate the immune profile of patients who underwent video-assisted thoracoscopic surgery or robot-assisted thoracic surgery lobectomies for the treatment of suspicious or known stage I non-small-cell lung cancer. METHODS Blood samples were taken preoperatively and 3 and 24 h postoperatively were analysed for C-reactive protein, glucose, cortisol, tumour necrosis factor alpha (TNF-α), interleukin 8 (IL-8) and interleukin 10 (IL-10) levels. TNF-α, IL-8 and IL-10 were also measured in lung tissues. T (CD4, CD8), B (CD19) and natural killer (CD56, CD16) cell counts and natural killer cell functions were analysed using a flow cytometry-based assay before and after surgery. RESULTS Minimally invasive surgery (robot-assisted thoracic surgery + video-assisted thoracoscopic surgery) significantly decreased IL-10 (P = 0.016) levels after surgery. No significant differences were detected in TNF-α (P = 0.48) and IL-8 (P = 0.15) levels before and after surgery. C-reactive protein (P < 0.001), cortisol (P < 0.001) and glucose levels (P < 0.001) increased significantly after surgery. Lymphocyte, total T cell, CD3+CD4+ and CD3+CD8+ CD16+CD56+ cell counts were significantly lower on postoperative day 1. CONCLUSION There seems to be a dynamic balance between pro- and anti-inflammatory cytokines and immune cells following minimally invasive lobectomy.
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Affiliation(s)
- Suat Erus
- Department of Thoracic Surgery, Koç University School of Medicine, Istanbul, Turkey
| | - Ayşe Bilge Öztürk
- Department of Allergy and Immunology, Koç University School of Medicine, Istanbul, Turkey
| | - Özgür Albayrak
- Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
| | - Said İncir
- Koç University Hospital, Clinical Laboratory, Istanbul, Turkey
| | | | - Ekin Ezgi Cesur
- Thoracic Surgery Department, VKF American Hospital, Istanbul, Turkey
| | - Ömer Yavuz
- Thoracic Surgery Department, Koç University Hospital, Istanbul, Turkey
| | - Serhan Tanju
- Department of Thoracic Surgery, Koç University School of Medicine, Istanbul, Turkey
| | - Şükrü Dilege
- Department of Thoracic Surgery, Koç University School of Medicine, Istanbul, Turkey
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Kokolakis G, Sabat R, Krüger-Krasagakis S, Eberle J. Ambivalent Effects of Tumor Necrosis Factor Alpha on Apoptosis of Malignant and Normal Human Keratinocytes. Skin Pharmacol Physiol 2021; 34:94-102. [PMID: 33730739 DOI: 10.1159/000513725] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 12/07/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Tumor necrosis factor alpha (TNFα) is a pro-inflammatory cytokine that may paradoxically induce either apoptosis or cell survival. It mediates its activity through binding of TNF-receptor (TNFR) 1 or 2. TNFR1 is mainly responsible for transmitting apoptotic signals. The activation of apoptotic mechanisms can either be intrinsic (mitochondrial) or extrinsic (death receptors). Death ligands such as TNF-related apoptosis-inducing ligand (TRAIL) specifically induce extrinsic apoptosis, while cytostatic drugs such as 5-fluorouracil (5FU) induce intrinsic apoptosis. OBJECTIVES To investigate the effects of TNFα on apoptosis in malignant and normal human keratinocytes. METHODS Human cutaneous squamous cell carcinoma (SCC) cell line SCC-13 and immortalized human keratinocytes HaCaT as well as primary normal human keratinocytes (PNHK) were stimulated with TNFα and then treated either with TRAIL or 5FU. Cell viability and cell proliferation, DNA fragmentation, apoptosis, and cytotoxicity were determined by WST-1 proliferation assay, ELISA, flow cytometry, and colorimetric analysis of lactate dehydrogenase, respectively. In addition, Western blotting was performed for analysis of caspase-3. RESULTS TNFα affected viability of SCC-13 and HaCaT cells in combination with 5FU or TRAIL. In contrast, TNFα did not influence cell viability of PNHK. It enhanced the apoptotic effects of both extrinsic and intrinsic stimuli in SCC-13 and HaCaT. In clear contrast, TNFα protected PNHK against TRAIL- and 5FU-induced apoptosis. The effects were dose-dependent and TNFα-specific; furthermore, the apoptosis pathway was caspase-dependent. CONCLUSIONS In summary, opposing effects of TNFα in malignant versus normal human keratinocytes were observed with possibly relevant clinical implications, when patients are treated with TNFα inhibitors.
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Affiliation(s)
- Georgios Kokolakis
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany, .,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Berlin, Germany, .,Department of Dermatology, Venereology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany,
| | - Robert Sabat
- Interdisciplinary Group of Molecular Immunopathology, Dermatology/Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Psoriasis Research and Treatment Centre, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sabine Krüger-Krasagakis
- Department of Dermatology and Venereology, School of Medicine, University of Crete, Heraklion, Greece
| | - Jürgen Eberle
- Department of Dermatology, Venereology and Allergology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Department of Dermatology, Venereology and Allergology, Skin Cancer Center Charité, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Nickels M, Mastana S, Hunter D, Denniff M, Codd V, Akam E. The effect of a 12-week resistance training intervention on leukocyte telomere length. Heliyon 2020; 6:e04151. [PMID: 32551387 PMCID: PMC7292922 DOI: 10.1016/j.heliyon.2020.e04151] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/29/2020] [Accepted: 06/02/2020] [Indexed: 01/06/2023] Open
Abstract
Telomere dynamics are an active biological process and positive lifestyle factors such as exercise are proposed to potentiate their length. The aim of this study was to investigate the effect of a low-resistance, high-repetition resistance training intervention on leukocyte telomere length (LTL) and associated health parameters. 23 sedentary middle-aged adults volunteered for this study (16 female/7 male; age = 51.5 ± 4.9 years) and performed two one-hour sessions of Les Mills BODYPUMP™ per week for 12 weeks. Outcome measures were taken at baseline, after the training intervention and at 12-month follow-up. LTL remained unchanged following the training intervention (pre 0.819 ± 0.121 vs post 0.812 ± 0.114, p = 0.420), despite a borderline significant increase in hTERT expression (p = 0.050). Circulating levels of tumour necrosis factor alpha were reduced after the intervention (p = 0.001). At 12-month follow-up, subjects who returned to a sedentary lifestyle (n = 10) displayed shorter telomeres compared to their pre (p = 0.036) values. In conclusion, no changes were observed in LTL following the 12-week training intervention, despite improvements in molecular parameters associated with telomere dynamics. It appears continued long-term exercise (>12 months) is necessary to preserve LTL in previously sedentary individuals.
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Affiliation(s)
- Matt Nickels
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom
| | - Sarabjit Mastana
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom
| | - David Hunter
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom
| | - Matthew Denniff
- Department of Cardiovascular Sciences, University of Leicester, Leicester, United Kingdom.,NIHR Leicester Cardiovascular Biomedical Research Unit, Glenfield Hospital, Leicester, LE3 9QP, United Kingdom
| | - Veryan Codd
- Department of Cardiovascular Sciences, University of Leicester, Leicester, United Kingdom.,NIHR Leicester Cardiovascular Biomedical Research Unit, Glenfield Hospital, Leicester, LE3 9QP, United Kingdom
| | - Elizabeth Akam
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom
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Peng X, Zhang C, Bao JP, Zhu L, Shi R, Xie ZY, Wang F, Wang K, Wu XT. A20 of nucleus pulposus cells plays a self-protection role via the nuclear factor-kappa B pathway in the inflammatory microenvironment. Bone Joint Res 2020; 9:225-235. [PMID: 32566144 PMCID: PMC7284293 DOI: 10.1302/2046-3758.95.bjr-2019-0230.r1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Aims Inflammatory response plays a pivotal role in the pathophysiological process of intervertebral disc degeneration (IDD). A20 (also known as tumour necrosis factor alpha-induced protein 3 (TNFAIP3)) is a ubiquitin-editing enzyme that restricts nuclear factor-kappa B (NF-κB) signalling. A20 prevents the occurrence of multiple inflammatory diseases. However, the role of A20 in the initiation of IDD has not been elucidated. The aim of the study was to investigate the effect of A20 in senescence of TNF alpha (TNF-α)-induced nucleus pulposus cells (NPCs). Methods Immunohistochemical staining was performed to observe the expression of A20 in normal and degenerated human intervertebral discs. The NPCs were dissected from the tail vertebrae of healthy male Sprague-Dawley rats and were cultured in the incubator. In the experiment, TNF-α was used to mimic the inflammatory environment of IDD. The cell viability and senescence were examined to investigate the effect of A20 on TNF-α-treated NPCs. The expression of messenger RNA (mRNA)-encoding proteins related to matrix macromolecules (collagen II, aggrecan) and senescence markers (p53, p16). Additionally, NF-κB/p65 activity of NPCs was detected within different test compounds. Results The expression of A20 was upregulated in degenerate human intervertebral discs. The A20 levels of NPCs in TNF-α inflammatory microenvironments were dramatically higher than those of the control group. TNF-α significantly decreased cell proliferation potency but increased senescence-associated beta-galactosidase (SA-β-Gal) activity, the expression of senescence-associated proteins, the synthesis of extracellular matrix, and G1 cycle arrest. The senescence indicators and NF-κB/p65 expression of A20 downregulated group treated with TNF-α were significantly upregulated compared to TNF-α-treated normal NPCs. Conclusion A20 has a self-protective effect on the senescence of NPCs induced by TNF-α. The downregulation of A20 in NPCs exacerbated the senescence of NPCs induced by TNF-α. Cite this article:Bone Joint Res. 2020;9(5):225–235.
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Affiliation(s)
- Xin Peng
- Medical School of Southeast University, Nanjing, China
| | - Cong Zhang
- Medical School of Southeast University, Nanjing, China
| | - Jun-Ping Bao
- Medical School of Southeast University, Nanjing, China
| | - Lei Zhu
- Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing, China
| | - Rui Shi
- Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing, China
| | - Zhi-Yang Xie
- Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing, China
| | - Feng Wang
- Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing, China
| | - Kun Wang
- Medical School of Southeast University and Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing, China
| | - Xiao-Tao Wu
- Medical School of Southeast University and Department of Orthopaedics, Zhongda Hospital, Southeast University, Nanjing, China
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Avcioglu G, Özbek Ipteç B, Akcan G, Görgün B, Fidan K, Carhan A, Yilmaz G, Kozaci LD. Effects of 1,25-Dihydroxy vitamin D 3 on TNF-α induced inflammation in human chondrocytes and SW1353 cells: a possible role for toll-like receptors. Mol Cell Biochem 2019; 464:131-142. [PMID: 31734843 DOI: 10.1007/s11010-019-03655-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Accepted: 11/08/2019] [Indexed: 02/06/2023]
Abstract
The purpose of this study is to evaluate anti-inflammatory and chondro-protective effects of 1,25(OH)2D3 in human chondrocytes and SW1353 cells via investigating expressions of MMPs, TIMPs, VDR, and intracellular signalling pathway mediators such as TLR-2 and -4. The HC and SW1353 cells were treated with 1,25(OH)2D3 at 10, 100, and 1000 nM concentrations in the absence/presence of TNF-α (20 ng/mL) for 48 h. The mRNA expressions of MMP-1, -2, -3, -9, and -13, TIMP-1 and -2, VDR, TLR-2 and -4 in HC and SW1353 cells were detected by qPCR after treatments. The cytotoxicity and cell proliferation analyses were assessed by LDH and WST-1 assay, respectively. Protein levels of MMPs, TIMPs, and VDR were analysed by immunocytochemistry and ELISA methods. TNF-α markedly increased cytotoxicity for 24, 48, 72 h (p < 0.05) and vitamin D treatment was shown to diminish the cytotoxic effect of TNF-α. Cell proliferations increased by Vitamin D in a dose-dependent manner. mRNA expressions of MMP-1, -2, -3, -9, and -13, TLR-2 and -4 genes decreased with 1,25(OH)2D3 treatment (p < 0.05). VDR, TIMP-1 and -2 levels elevated after TNF-α exposure compared with the control group in HC cells (p < 0.05). Protein expression levels were determined using Western blotting, ELISA and immunocytochemistry. 1,25(OH)2D3 via binding to VDR, reversed the effects of TNF-α by inhibiting TLR-2 and 4. Decreased levels of VDR, TIMP-1 and -2 after TNF-α treatment were elevated by 1,25(OH)2D3 proportional with increasing 1,25(OH)2D3 doses. 1,25(OH)2D3 and TNF-α co-treatment decreased MMP-1, -2, -3, -9, and -13 levels were after TNF-α exposure.
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Affiliation(s)
- Gamze Avcioglu
- Department of Biochemistry, Faculty of Medicine, Ankara Yildirim Beyazit University, 06800, Ankara, Turkey.
| | - Betül Özbek Ipteç
- Department of Biochemistry, Faculty of Medicine, Ankara Yildirim Beyazit University, 06800, Ankara, Turkey
| | - Gülben Akcan
- Department of Histology and Embryology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Büsra Görgün
- Department of Translational Medicine, Institute of Health Sciences, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Kübra Fidan
- Department of Translational Medicine, Institute of Health Sciences, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Ahmet Carhan
- Department of Medical Biology, Faculty of Medicine, Ankara Yildirim Beyazit University, Ankara, Turkey.,Department of Translational Medicine, Institute of Health Sciences, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Gulsen Yilmaz
- Department of Biochemistry, Faculty of Medicine, Ankara Yildirim Beyazit University, 06800, Ankara, Turkey.,Department of Translational Medicine, Institute of Health Sciences, Ankara Yildirim Beyazit University, Ankara, Turkey
| | - Leyla Didem Kozaci
- Department of Biochemistry, Faculty of Medicine, Ankara Yildirim Beyazit University, 06800, Ankara, Turkey.,Department of Translational Medicine, Institute of Health Sciences, Ankara Yildirim Beyazit University, Ankara, Turkey
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Kim JA, Bang CH, Song GG, Kim JH, Choi SJ, Jung JH. Tumour necrosis factor alpha gene polymorphisms in women with recurrent pregnancy loss: a meta-analysis. HUM FERTIL 2018; 23:159-169. [PMID: 30501430 DOI: 10.1080/14647273.2018.1543899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Tumour necrosis factor alpha (TNF-α) concentration is associated with recurrent pregnancy loss (RPL). Moreover, TNF-α promoter polymorphisms affect cellular TNF-α concentrations. Although several studies on TNF-α polymorphisms have been reported, these studies only define specific loci and result in conflicting conclusions. The meta-analysis in this study was performed to examine the relationship between various TNF-α polymorphisms and RPL. We searched for articles, using MEDLINE and Embase, and performed meta-analysis of 21 studies involving 3437 cases and 4016 controls. The results demonstrated that the -308G/A polymorphism is positively associated with RPL, particularly in cases involving three or more miscarriages. For -1031T/C, -863C/A, and -376G/A polymorphisms, recessive and homozygote models revealed significant associations with RPL. However, -857C/T, -238G/A, and +488G/A polymorphisms showed no association with RPL. A subgroup analysis with respect to ethnicity demonstrated that the -308G/A and -238G/A polymorphisms are associated with RPL in Asian and Middle Eastern populations, respectively. This meta-analysis showed the associations between TNF-α polymorphisms and RPL. However, further studies of genetic polymorphisms in TNF-α other than -308G/A and -238G/A are required.
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Affiliation(s)
- Jung A Kim
- Korea University College of Medicine, Seoul, Korea.,Division of Endocrinology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Cho Hee Bang
- Korea University College of Nursing, Seoul, Korea
| | - Gwan Gyu Song
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal medicine, Korea University Guro Hospital, Seoul, Korea
| | - Jae-Hoon Kim
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal medicine, Korea University Guro Hospital, Seoul, Korea
| | - Sung Jae Choi
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan-si, Gyeonggi-do, Korea
| | - Jae Hyun Jung
- Korea University College of Medicine, Seoul, Korea.,Division of Rheumatology, Department of Internal medicine, Korea University Guro Hospital, Seoul, Korea
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10
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Retsas T, Huse K, Lazaridis LD, Karampela N, Bauer M, Platzer M, Kolonia V, Papageorgiou E, Giamarellos-Bourboulis EJ, Dimopoulos G. Haplotypes composed of minor frequency single nucleotide polymorphisms of the TNF gene protect from progression into sepsis: A study using the new sepsis classification. Int J Infect Dis 2017; 67:102-106. [PMID: 29274398 DOI: 10.1016/j.ijid.2017.12.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/04/2017] [Accepted: 12/07/2017] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVES Several articles have provided conflicting results regarding the role of single nucleotide polymorphisms (SNPs) in the promoter region of the TNF gene in susceptibility to sepsis. Former articles have been based on previous definitions of sepsis. This study investigated the influence of TNF haplotypes on the development of sepsis using the new Sepsis-3 definitions. METHODS DNA was isolated from patients suffering from infection and systemic inflammatory response syndrome. Haplotyping was performed for six SNPs of TNF. The serum levels of tumour necrosis factor alpha (TNF-α) of these patients were measured using an enzyme immunosorbent assay. Patients were classified into infection and sepsis categories using the Sepsis-3 definitions. Associations between the TNF haplotypes and the clinical characteristics and serum TNF-α levels of the patients were examined. RESULTS The most common TNF haplotype h1 was composed of major alleles of the studied SNPs. Carriage of haplotypes composed of minor frequency alleles was associated with a lower risk of developing sepsis (odds ratio 0.41, 95% confidence interval 0.19-0.88, p=0.022), but this did not affect the 28-day outcome. Serum TNF-α levels were significantly higher among patients homozygous for h1 haplotypes who developed sepsis compared to infection (p=0.032); a similar result was not observed for patients carrying other haplotypes. CONCLUSIONS Haplotypes containing minor frequency SNP alleles of TNF protect against the development of sepsis without affecting the outcome.
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Affiliation(s)
- Theodoros Retsas
- Department of Therapeutics, National and Kapodistrian University of Athens, Athens, Greece
| | - Klaus Huse
- Genome Analysis, Leibniz Institute on Aging - Fritz Lipmann Institute, Jena, Germany
| | | | - Niki Karampela
- Intensive Care Unit, Korgialeneio Benakeio General Hospital, Athens, Greece
| | - Michael Bauer
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany; Department of Anaesthesiology and Intensive Care Unit, Jena University Hospital, Jena, Germany
| | - Matthias Platzer
- Genome Analysis, Leibniz Institute on Aging - Fritz Lipmann Institute, Jena, Germany
| | - Virginia Kolonia
- Second Department of Internal Medicine, Sismanogleion General Hospital, Athens, Greece
| | - Eirini Papageorgiou
- Intensive Care Unit, Thessaloniki Theageneio General Hospital, Thessaloniki, Greece
| | - Evangelos J Giamarellos-Bourboulis
- Fourth Department of Internal Medicine, National and Kapodistrian University of Athens, Athens, Greece; Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany.
| | - George Dimopoulos
- Second Department of Critical Care Medicine, National and Kapodistrian University of Athens, Athens, Greece
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11
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Stoney PN, Rodrigues D, Helfer G, Khatib T, Ashton A, Hay EA, Starr R, Kociszewska D, Morgan P, McCaffery P. A seasonal switch in histone deacetylase gene expression in the hypothalamus and their capacity to modulate nuclear signaling pathways. Brain Behav Immun 2017; 61:340-352. [PMID: 27993690 PMCID: PMC5325119 DOI: 10.1016/j.bbi.2016.12.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 12/01/2016] [Accepted: 12/13/2016] [Indexed: 12/28/2022] Open
Abstract
Seasonal animals undergo changes in physiology and behavior between summer and winter conditions. These changes are in part driven by a switch in a series of hypothalamic genes under transcriptional control by hormones and, of recent interest, inflammatory factors. Crucial to the control of transcription are histone deacetylases (HDACs), generally acting to repress transcription by local histone modification. Seasonal changes in hypothalamic HDAC transcripts were investigated in photoperiod-sensitive F344 rats by altering the day-length (photoperiod). HDAC4, 6 and 9 were found to change in expression. The potential influence of HDACs on two hypothalamic signaling pathways that regulate transcription, inflammatory and nuclear receptor signaling, was investigated. For inflammatory signaling the focus was on NF-κB because of the novel finding made that its expression is seasonally regulated in the rat hypothalamus. For nuclear receptor signaling it was discovered that expression of retinoic acid receptor beta was regulated seasonally. HDAC modulation of NF-κB-induced pathways was examined in a hypothalamic neuronal cell line and primary hypothalamic tanycytes. HDAC4/5/6 inhibition altered the control of gene expression (Fos, Prkca, Prkcd and Ptp1b) by inducers of NF-κB that activate inflammation. These inhibitors also modified the action of nuclear receptor ligands thyroid hormone and retinoic acid. Thus seasonal changes in HDAC4 and 6 have the potential to epigenetically modify multiple gene regulatory pathways in the hypothalamus that could act to limit inflammatory pathways in the hypothalamus during long-day summer-like conditions.
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Affiliation(s)
- Patrick N. Stoney
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK
| | - Diana Rodrigues
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK
| | - Gisela Helfer
- Rowett Institute of Nutrition and Health, University of Aberdeen, Greenburn Road, Bucksburn, Aberdeen AB21 9SB, Scotland, UK,Faculty of Life Sciences, University of Bradford, Richmond Road, Bradford BD7 1DP, UK
| | - Thabat Khatib
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK
| | - Anna Ashton
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK
| | - Elizabeth A. Hay
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK
| | - Robert Starr
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK
| | - Dagmara Kociszewska
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK
| | - Peter Morgan
- Rowett Institute of Nutrition and Health, University of Aberdeen, Greenburn Road, Bucksburn, Aberdeen AB21 9SB, Scotland, UK
| | - Peter McCaffery
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, UK.
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12
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Aparicio VA, Coll-Risco I, Camiletti-Moirón D, Nebot E, Martínez R, López-Jurado M, Aranda P. Interval aerobic training combined with strength-endurance exercise improves metabolic markers beyond caloric restriction in Zucker rats. Nutr Metab Cardiovasc Dis 2016; 26:713-721. [PMID: 26874906 DOI: 10.1016/j.numecd.2016.01.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 12/30/2015] [Accepted: 01/11/2016] [Indexed: 12/15/2022]
Abstract
AIMS To investigate the effects of interval aerobic training combined with strength-endurance exercise (IASE) and caloric restriction (CR) on body composition, glycaemic and lipid profile and inflammatory markers. METHODS AND RESULTS Thirty-two Zucker diabetic fatty rats were randomised into 4 groups (sedentary + CR; sedentary + adlibitum; IASE + CR; and IASE + adlibitum). Training groups conducted an IASE programme in the same session, 5 days/week for 2 months. Body weight, fat and muscle mass and body water were measured using a body composition analyser. Plasma total, LDL and HDL cholesterol, phospholipids, triglycerides, insulin, adiponectin, tumour necrosis factor alpha, interleukin 1 and 10 were measured. Blood fasting and postprandial glucose were assessed. Body weight was lower in the CR compared to the adlibitum groups (p < 0.001). Fat mass was lower in the CR compared to the adlibitum (p < 0.05) and in the IASE compared to the sedentary groups (p < 0.001), but IASE increased lean mass (p < 0.001). Triglycerides were lower in the CR compared to the adlibitum groups (p < 0.001) whereas total and LDL-cholesterol and fasting glucose were reduced only in the IASE groups (all, p < 0.001). Phospholipids decreased in the CR compared to the adlibitum (p < 0.05) and the IASE compared to the sedentary groups (p < 0.001). The area under the curve after oral glucose tolerance test, insulin and homoeostatic model assessment were lower in the IASE and the CR compared to the sedentary and adlibitum groups, respectively (all, p < 0.001). Adiponectin was lower in the CR groups (p < 0.001). CONCLUSION Overall, IASE as well as CR were both useful interventions, especially when combined. However, IASE showed greater improvements on body composition, inflammatory and glycaemic profile than CR did.
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Affiliation(s)
- V A Aparicio
- Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain; Department of Public and Occupational Health, EMGO(+) Institute for Health and Care Research, VU University Medical Centre, Amsterdam, The Netherlands.
| | - I Coll-Risco
- Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain
| | - D Camiletti-Moirón
- Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain; Department of Physical Education, School of Education, University of Cádiz, Spain
| | - E Nebot
- Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain; Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Austria
| | - R Martínez
- Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain
| | - M López-Jurado
- Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain
| | - P Aranda
- Department of Physiology, Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, University of Granada, Spain
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13
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Duvnjak L, Blaslov K, Perković MN, Ćuća JK. Dipeptidyl peptidase-4 activity might be a link between tumour necrosis factor alpha and insulin resistance in type 1 diabetes. Endocrine 2016; 53:453-8. [PMID: 26906712 DOI: 10.1007/s12020-016-0899-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 02/11/2016] [Indexed: 11/28/2022]
Abstract
Tumour necrosis factor alpha (TNF α) leads to β cell damage in type 1 diabetes (T1DM) but also causes insulin resistance (IR). It modulates dipeptidyl peptidase-4 (DPP-4) activity, adipokine linked with both IR and T1DM. We were interested if there is an association of TNF α in conjunction with DPP-4 and IR in T1DM. DPP-4 activity, TNF α concentration measurements, and insulin sensitivity calculation using estimated glucose disposal rate (eGDR) equation were performed in 70 T1DM patients. They were divided into two groups according to eGDR median. The group with higher IR had higher value of DPP-4 activity (27.57 ± 1.77 vs. 18.33 ± 1.14, p < 0.001) and TNF α concentration (12.91 ± 0.83 vs. 6.72 ± 0.36, p < 0.001). TNF α concentration and DPP-4 activity negatively correlated with eGDR (r = -0.616, p < 0.001 and r = -0.643, p < 0.001) while correlating positively with each other (r = 0.422; p = 0.001). The linear regression showed that eGDR decreases for 0.166 mg kg(-1) min(-1) by TNF α concentration increase of 1 pg/mL (p < 0.001) and for 0.090 mg kg(-1) min(-1) by DPP-4 activity increase of 1 U/L (p = 0.001) when adjusted for age, gender disease duration, glycated haemoglobin, body mass index and waist-to-hip ratio. eGDR decreased by additional 0.60 mg kg(-1) min(-1) (B = -0.150, p < 0.001) when DPP-4 activity was additionally adjusted for TNF α. TNF α concentration is associated with IR, correlates with its severity and increases the drop in insulin sensitivity modulated by DPP-4 activity. Whether TNF α involvement in the insulin signalling pathway is mediated by DPP-4 activity needs to be further evaluated.
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Affiliation(s)
- Lea Duvnjak
- Vuk Vrhovac Clinic for Diabetes, Endocrinology and Metabolic Diseases, University Hospital Merkur, 10000, Zagreb, Croatia
- School of Medicine, University of Zagreb, 10000, Zagreb, Croatia
| | - Kristina Blaslov
- Vuk Vrhovac Clinic for Diabetes, Endocrinology and Metabolic Diseases, University Hospital Merkur, 10000, Zagreb, Croatia.
| | - Matea Nikolac Perković
- Laboratory for Molecular Neuropsychiatry, Division of Molecular Medicine, Rudjer Boskovic Institute, 10000, Zagreb, Croatia
| | - Jadranka Knežević Ćuća
- Vuk Vrhovac Clinic for Diabetes, Endocrinology and Metabolic Diseases, University Hospital Merkur, 10000, Zagreb, Croatia
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14
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Ta MHT, Schwensen KG, Liuwantara D, Huso DL, Watnick T, Rangan GK. Constitutive renal Rel/nuclear factor-κB expression in Lewis polycystic kidney disease rats. World J Nephrol 2016; 5:339-357. [PMID: 27458563 PMCID: PMC4936341 DOI: 10.5527/wjn.v5.i4.339] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 03/31/2016] [Accepted: 04/18/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the temporal expression and pattern of Rel/nuclear factor (NF)-κB proteins in renal tissue in polycystic kidney disease (PKD).
METHODS: The renal expression of Rel/NF-κB proteins was determined by immunohistochemistry, immunofluorescence and immunoblot analysis in Lewis polycystic kidney rats (LPK, a genetic ortholog of human nephronopthsis-9) from postnatal weeks 3 to 20. At each timepoint, renal disease progression and the mRNA expression of NF-κB-dependent genes (TNFα and CCL2) were determined. NF-κB was also histologically assessed in human PKD tissue.
RESULTS: Progressive kidney enlargement in LPK rats was accompanied by increased renal cell proliferation and interstitial monocyte accumulation (peaking at weeks 3 and 10 respectively), and progressive interstitial fibrosis (with α smooth muscle actin and Sirius Red deposition significantly increased compared to Lewis kidneys from weeks 3 to 6 onwards). Rel/NF-κB proteins (phosphorylated-p105, p65, p50, c-Rel and RelB) were expressed in cystic epithelial cells (CECs) of LPK kidneys as early as postnatal week 3 and sustained until late-stage disease at week 20. From weeks 10 to 20, nuclear p65, p50, RelB and cytoplasmic IκBα protein levels, and TNFα and CCL2 expression, were upregulated in LPK compared to Lewis kidneys. NF-κB proteins were consistently expressed in CECs of human PKD. The DNA damage marker γ-H2AX was also identified in the CECs of LPK and human polycystic kidneys.
CONCLUSION: Several NF-κB proteins are consistently expressed in CECs in human and experimental PKD. These data suggest that the upregulation of both the canonical and non-canonical pathways of NF-κB signaling may be a constitutive and early pathological feature of cystic renal diseases.
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15
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Ronza P, Bermúdez R, Losada AP, Sitjà-Bobadilla A, Pardo BG, Quiroga MI. Immunohistochemical detection and gene expression of TNFα in turbot (Scophthalmus maximus) enteromyxosis. Fish Shellfish Immunol 2015; 47:368-376. [PMID: 26386194 DOI: 10.1016/j.fsi.2015.09.032] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 08/29/2015] [Accepted: 09/15/2015] [Indexed: 06/05/2023]
Abstract
Enteromyxum scophthalmi (Myxozoa) constitutes one of the most devastating pathogens for turbot (Scophthalmus maximus, L.) aquaculture. This parasite causes a severe intestinal parasitosis that leads to a cachectic syndrome with high morbidity and mortality rates for which no therapeutic options are available. Presence of inflammatory infiltrates, increased apoptotic rates and epithelial detaching have been described at intestinal level, as well as leukocyte depletion in lymphohaematopoietic organs. Previous investigations on enteromyxosis in turbot showed the high susceptibility of this species to the parasite and reported the existence of a dysregulated immune response against the parasite. The pleiotropic cytokine tumour necrosis factor alpha (TNFα) plays a major role in immune response and is involved in a wide range of biological activities. In teleost, the gene expression of this cytokine has been found regulated under several pathological conditions. Teleost TNFα shows some analogous functions with its mammalian counterparts, but the extent of its activities is still poorly understood. Cytokines are generally considered as a double-edge sword and TNFα has been implicated in the pathogenesis of different inflammatory diseases as well as in wasting syndromes described in mammals. The aim of this work was to analyse the expression of TNFα during enteromyxosis with molecular (Q-PCR) and morphological (immunohistochemistry) tools. Kidney, spleen and pyloric caeca from turbot with moderate and severe infections were analysed and compared to healthy naïve fish. TNFα expression was increased in both spleen and kidney in the earlier stages of the disease, whereas in severely infected fish, the expression decreased, especially in kidney. At the intestinal level, an increase in the number of TNFα-positive cells was noticed, which was proportional to the infiltration of inflammatory cells. The results demonstrate the involvement of TNFα in the immune response to E. scophthalmi in turbot, which could be related to the development of the clinic signs and lesions.
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Affiliation(s)
- Paolo Ronza
- Departamento de Ciencias Clínicas Veterinarias, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain.
| | - Roberto Bermúdez
- Departamento de Anatomía y Producción Animal, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain.
| | - Ana Paula Losada
- Departamento de Ciencias Clínicas Veterinarias, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain.
| | - Ariadna Sitjà-Bobadilla
- Instituto de Acuicultura Torre de la Sal (IATS-CSIC), Ribera de Cabanes, Castellón 12595, Spain.
| | - Belén G Pardo
- Departamento de Genética, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain.
| | - María Isabel Quiroga
- Departamento de Ciencias Clínicas Veterinarias, Facultad de Veterinaria, Universidad de Santiago de Compostela, 27002, Lugo, Spain.
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16
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Zanoli L, Rastelli S, Inserra G, Castellino P. Arterial structure and function in inflammatory bowel disease. World J Gastroenterol 2015; 21:11304-11311. [PMID: 26523102 PMCID: PMC4616206 DOI: 10.3748/wjg.v21.i40.11304] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/30/2015] [Accepted: 09/02/2015] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) is the result of a combination of environmental, genetic and immunologic factors that trigger an uncontrolled immune response within the intestine, which results in inflammation among genetically predisposed individuals. Several studies have reported that the prevalence of classic cardiovascular risk factors is lower among subjects with IBD than in the general population, including obesity, dyslipidaemia, diabetes and hypertension. Therefore, given the risk profile of IBD subjects, the expected cardiovascular morbidity and mortality should be lower in these patients than in the general population. However, this is not the case because the standardized mortality ratio is not reduced and the risk of coronary heart disease is increased in patients with IBD. It is reasonable to hypothesize that other factors not considered in the classical stratification of cardiovascular risk may be involved in these subjects. Therefore, IBD may be a useful model with which to evaluate the effects of chronic low-grade inflammation in the development of cardiovascular diseases. Arterial stiffness is both a marker of subclinical target organ damage and a cardiovascular risk factor. In diseases characterized by chronic systemic inflammation, there is evidence that the inflammation affects arterial properties and induces both endothelial dysfunction and arterial stiffening. It has been reported that decreasing inflammation via anti tumor necrosis factor alpha therapy decreases arterial stiffness and restores endothelial function in patients with chronic inflammatory disorders. Consistent with these results, several recent studies have been conducted to determine whether arterial properties are altered among patients with IBD. In this review, we discuss the evidence pertaining to arterial structure and function and present the available data regarding arterial stiffness and endothelial function in patients with IBD.
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17
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Zhou Y, Taylor B, van der Mei I, Stewart N, Charlesworth J, Blizzard L, Ponsonby AL, Dwyer T, Pittas F, Simpson S. Genetic variation in PBMC-produced IFN-γ and TNF-α associations with relapse in multiple sclerosis. J Neurol Sci 2014; 349:40-4. [PMID: 25575858 DOI: 10.1016/j.jns.2014.12.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 11/17/2014] [Accepted: 12/15/2014] [Indexed: 12/01/2022]
Abstract
BACKGROUND Alterations in peripheral blood mononuclear cell (PBMC) cytokine production have been found in multiple sclerosis (MS) compared to healthy controls. We have previously found that stimulated PBMC-produced TNF-α and IFN-γ modulated MS relapse risk, such that raised TNF-α was protective, while raised IFN-γ increased relapse risk. OBJECTIVE To assess whether SNPs within genes for relevant cytokines and their receptors modulate the associations of TNF-α and IFN-γ with relapse, thus providing additional information about these cytokine effects and the roles of these genes in MS. METHODS Prospective cohort of 91 participants with relapsing-remitting MS and cytokine and genotype data. SNPs (N=361) within a window of 10 kb around each cytokine/cytokine receptor gene (N=84) were selected for analysis. Predictors of PBMC cytokines were evaluated by multilevel mixed-effects linear regression. Predictors of relapse were evaluated by Cox proportional hazards regression. Bonferroni correction was used to adjust for multiple testing; thus p<1.39 × 10(-4) was defined as significant. RESULTS Individuals of GG genotype of rs3218295 (within the gene IL2RB) demonstrated a significant protective effect of TNF-α on relapse while those of GA/AA genotype showed a significant positive association (pinteraction=5.04 × 10(-5)). Carriers of CC genotype of rs522807 (3' region of TNFRSF1B) and the AA genotype of rs25879 (5' region of IL3) showed a strong association between IFN-γ and increased relapse risk (pinteraction=8.21 × 10(-5) and 1.70 × 10(-5), respectively). CONCLUSIONS Our results show novel modulation of TNF-α and IFN-γ associations with relapse by SNPs in major cytokines. These findings suggest the potential for these genes and/or their products as potential therapeutic targets in MS.
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Affiliation(s)
- Yuan Zhou
- Menzies Institute for Medical Research, University of Tasmania, Australia
| | - Bruce Taylor
- Menzies Institute for Medical Research, University of Tasmania, Australia
| | - Ingrid van der Mei
- Menzies Institute for Medical Research, University of Tasmania, Australia
| | - Niall Stewart
- School of Pharmacy, University of Tasmania, Australia; School of Medicine, University of Tasmania, Australia
| | - Jac Charlesworth
- Menzies Institute for Medical Research, University of Tasmania, Australia
| | - Leigh Blizzard
- Menzies Institute for Medical Research, University of Tasmania, Australia
| | | | - Terence Dwyer
- Murdoch Children's Research Institute, University of Melbourne, Australia
| | - Fotini Pittas
- School of Medicine, University of Tasmania, Australia
| | - Steve Simpson
- Menzies Institute for Medical Research, University of Tasmania, Australia.
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Magenta D, Sangiovanni E, Basilico N, Haynes RK, Parapini S, Colombo E, Bosisio E, Taramelli D, Dell’Agli M. Inhibition of metalloproteinase-9 secretion and gene expression by artemisinin derivatives. Acta Trop 2014; 140:77-83. [PMID: 25149353 DOI: 10.1016/j.actatropica.2014.08.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/23/2014] [Accepted: 08/07/2014] [Indexed: 01/08/2023]
Abstract
Malaria remains one of the world's most common infectious diseases, being responsible for more deaths than any other communicable disease except tuberculosis. There is strong evidence that tumour necrosis factor α and interleukin-1β are important contributors to the systemic disease caused by the infection with Plasmodium falciparum. Circulating levels of TNFα are increased after infection, as a consequence of stimulation of monocyte-macrophages by infected red blood cells or parasite products, as shown in vitro for the malaria pigment haemozoin. TNFα in turn enhances the synthesis of metalloproteinase-9 in monocytes and macrophages. Metalloproteinase-9 acts on the extracellular matrix but also on non-traditional substrates, including precursors of inflammatory cytokines, which are proteolytically activated and contribute to the amplification of the inflammatory response. The aim of the present work was to establish whether artemisinin and its derivatives artemisone, artesunate and dihydroartemisinin possess immuno-modulatory properties. In particular, it is necessary to evaluate their effects on mRNA levels and secretion of MMP-9 by the human monocytic cell line (THP-1 cells) stimulated by hemozoin or TNFα. 5μM of each derivative, although not artemisinin itself, induced significantly inhibited TNFα production. Artesunate, artemisone and DHA antagonized haemozoin-induced MMP-9 secretion by 25%, 24% and 50%, respectively. mRNA levels were also depressed by 14%, 20% and 27%, respectively, thus reflecting in part the effect observed on protein production. The derivatives significantly inhibited both TNFα-induced MMP-9 secretion and mRNA levels to a greater extent than haemozoin itself. Both haemozoin and TNFα increased NF-κB driven transcription by 11 and 7.7 fold, respectively. Artesunate, artemisone and DHA inhibited haemozoin-induced NF-κB driven transcription by 28%, 34%, and 49%, respectively. Similarly the derivatives, but not artemisinin, prevented TNFα-induced NF-κB driven transcription by 47-51%. The study indicates that artemisinins may attenuate the inflammatory potential of monocytes in vivo. Thus, in addition to direct anti-parasitic activities, the beneficial clinical effects of artemisinins for the treatment of malaria include the apparent ability to attenuate the inflammatory response, thus limiting the risk of progression to the more severe form of the disease, including the onset of cerebral malaria.
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Mohamed TMA, Zi M, Prehar S, Maqsood A, Abou-Leisa R, Nguyen L, Pfeifer GP, Cartwright EJ, Neyses L, Oceandy D. The tumour suppressor Ras-association domain family protein 1A (RASSF1A) regulates TNF-α signalling in cardiomyocytes. Cardiovasc Res 2014; 103:47-59. [PMID: 24776599 PMCID: PMC4207857 DOI: 10.1093/cvr/cvu111] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Aims Tumour necrosis factor-α (TNF-α) plays a key role in the regulation of cardiac contractility. Although cardiomyocytes are known to express the TNF-α receptors (TNFRs), the mechanism of TNF-α signal transmission is incompletely understood. The aim of this study was to investigate whether the tumour suppressor Ras-association domain family protein 1 isoform A (RASSF1A) modulates TNF-α signalling in cardiomyocytes. Methods and results We used RASSF1A knockout (RASSF1A−/−) mice and wild-type (WT) littermates in this study. Acute stimulation with a low dose of TNF-α (10 µg/kg iv) increased cardiac contractility and intracellular calcium transients' amplitude in WT mice. In contrast, RASSF1A−/− mice showed a blunted contractile response. Mechanistically, RASSF1A was essential in the formation of the TNFR complex (TNFRC), where it functions as an adaptor molecule to facilitate the recruitment of TNFR type 1-associated death domain protein and TNFR-associated factor 2 to form the TNF-α receptor complex. In the absence of RASSF1A, signal transmission from the TNF-α receptor complex to the downstream effectors, such as cytoplasmic phospholipase A2 and protein kinase A, was attenuated leading to the reduction in the activation of calcium handling molecules, such as L-type Ca2+ channel and ryanodine receptors. Conclusion Our data indicate an essential role of RASSF1A in regulating TNF-α signalling in cardiomyocytes, with RASSF1A being key in the formation of the TNFRC and in signal transmission to the downstream targets.
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Affiliation(s)
- Tamer M A Mohamed
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK Faculty of Pharmacy, Zagazig University, EL-Sharkiah, Egypt J David Gladstone Research Institutes, San Francisco, CA, USA
| | - Min Zi
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Sukhpal Prehar
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Arfa Maqsood
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Riham Abou-Leisa
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Loan Nguyen
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Gerd P Pfeifer
- Division of Biology, Beckman Research Institute of the City of Hope, Duarte, CA, USA
| | - Elizabeth J Cartwright
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Ludwig Neyses
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Delvac Oceandy
- Institute of Cardiovascular Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
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Guo XF, Wang J, Yu SJ, Song J, Ji MY, Cao Z, Zhang JX, Wang J, Dong WG. TNF-α-308 polymorphism and risk of digestive system cancers: A meta-analysis. World J Gastroenterol 2013; 19:9461-9471. [PMID: 24409077 PMCID: PMC3882423 DOI: 10.3748/wjg.v19.i48.9461] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 10/11/2013] [Accepted: 11/05/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the association between the tumour necrosis factor alpha-308 (TNF-α-308) gene polymorphism and the risk of digestive system cancers.
METHODS: All eligible case-control studies published up to December 2012 were identified by searching PubMed, Web of Science, Embase and China National Knowledge Internet without language restrictions. The risk of digestive system cancers associated with the TNF-α-308 polymorphism was estimated for each study using odds ratio (OR) together with its 95%CI, respectively. Cochrane Collaboration RevMan 5.1 was used to perform the analysis. A χ2-test-based Q statistic test and an I2 test were performed to assess the between-study heterogeneity. When the Q test was significant (P < 0.05) or I2 > 50%, the random effects model was used, otherwise the fixed effects model was used.
RESULTS: Fifty-eight studies from fifty-five publications with a total of 9986 cancer patients and 15511 healthy controls were included. Overall, a significant association was found between the TNF-α-308 polymorphism and the risk of digestive system cancers [dominant model: OR = 1.23, 95%CI: 1.09-1.39, (G/A) vs (G/G): OR = 1.15, 95%CI: 1.02-1.28, (A/A) vs (G/G): OR = 1.44, 95%CI: 1.19-1.73, recessive model: OR = 1.38, 95%CI: 1.15-1.66]. Furthermore, when the analysis was stratified by ethnicity, similar results were observed in both the Asian and Caucasian populations, except for the dominant model and heterozygote comparisons in the Asian population [dominant model: OR = 1.24, 95%CI: 0.99-1.56, (G/A) vs (G/G): OR = 1.09, 95%CI: 0.96-1.24]. When the cancer type subgroups were examined, similar results were detected in gastric and hepatocellular carcinomas; however, no significant association was observed among other digestive system cancers.
CONCLUSION: The TNF-α-308 gene polymorphism may be significantly associated with the risk of gastric and hepatocellular carcinomas, but not colorectal, pancreatic, or oesophageal cancer, in the Asian population.
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Kirbs C, Kloft C. In vitro microdialysis recovery and delivery investigation of cytokines as prerequisite for potential biomarker profiling. Eur J Pharm Sci 2013; 57:48-59. [PMID: 24246312 DOI: 10.1016/j.ejps.2013.11.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 11/05/2013] [Indexed: 11/19/2022]
Abstract
Cytokines as immunomodulatory proteins are secreted by immune and tissue cells mediating immune responses, e.g. inflammation. The use of microdialysis as a minimally invasive technique for sampling interstitial fluid might provide the basis for biomarker profiling for diseases and therapy monitoring. The objectives of this investigation were to develop reproducible methods and apply them to define applicability limits to quantify cytokines in microdialysate. In vitro microdialysis recovery and delivery investigations were performed utilising a standardised system exploring analyte adsorption, pH effects, the infuence of cytokine concentration and temperature of the catheter surrounding medium. A Ringer's/human albumin solution was used as microperfusate and catheter surrounding medium; interleukin 6, 8 and 10 (IL-6, IL-8, IL-10) and tumour necrosis factor alpha (TNF-α) served as model cytokines. Microdialysate was sampled (n=3) at flow rates of 0.3-5.0μL/min using 3 linear probes. All samples were measured using a validated flow-cytometry method adapted to microdialysate. Relative recoveries of the individual cytokines decreased exponentially with increasing flow rates and were not influenced by the catheter surrounding medium concentration but recovery of IL-6, IL-10 and TNF-α by the pH value. Relative recovery and relative delivery of IL-8 were of comparable extent and increased with higher temperatures. For the other cytokines, however, negative values occurred for relative delivery probably due to ultrafiltration. Clinical application of microdialysis of cytokines is principally feasible if the many influencing factors are controlled. Since relative delivery determination is only reliable for IL-8, retrodialysis or similar calibration methods must be avoided. As future perspective, in vivo μD feasibility should next be demonstrated.
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Affiliation(s)
- Claudia Kirbs
- Department of Clinical Pharmacy and Biochemistry, Freie Universitaet Berlin, Berlin, Germany
| | - Charlotte Kloft
- Department of Clinical Pharmacy and Biochemistry, Freie Universitaet Berlin, Berlin, Germany.
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Prestifilippo JP, Medina VA, Mohn CE, Rodriguez PA, Elverdin JC, Fernandez-Solari J. Endocannabinoids mediate hyposalivation induced by inflammogens in the submandibular glands and hypothalamus. Arch Oral Biol 2013; 58:1251-9. [PMID: 23684250 DOI: 10.1016/j.archoralbio.2013.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/13/2013] [Accepted: 04/05/2013] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the factors that could participate on salivary glands hypofunction during inflammation and the participation of endocannabinoids in hyposalivation induced by the presence of inflammogens in the submandibular gland (SMG) or in the brain. DESIGN Salivary secretion was assessed in the presence of inflammogens and/or the cannabinoid receptor antagonist AM251 in the SMG or in the brain of rats. At the end of the experiments, some systemic and glandular inflammatory markers were measured and histopathological analysis was performed. RESULTS The inhibitory effect observed 1h after lipopolysaccharide (LPS, 50μg/50μl) injection into the SMG (ig) was completely prevented by the injection of AM251 (5μg/50μl) by the same route (P<0.05). The LPS (ig)-induced increase in PGE2 content was not altered by AM251 (ig), while the glandular production of TNFα induced by the endotoxin (P<0.001) was partially blocked by it. Also, LPS injection produced no significant changes in the wet weight of the SMG neither damage to lipid membranes of its cells, nor significant microscopic changes in them, after hispopathological analysis, compared to controls. Finally, TNFα (100ng/5μl) injected intracerebro-ventricularly (icv) inhibited methacholine-induced salivary secretion evaluated 30min after (P<0.01), but the previous injection of AM251 (500ng/5μl, icv) prevented completely that effect. CONCLUSION We conclude that endocannabinoids mediate the hyposialia induced by inflammogens in the SMG and in the brain. The hypofunction would be due to changes on signalling pathway produced by inflammatory compounds since anatomical changes were not observed.
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Affiliation(s)
- J P Prestifilippo
- Department of Physiology, Dental School, University of Buenos Aires, Marcelo T.de Alvear 2142, Buenos Aires, Argentina
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Ferguson LR, Huebner C, Petermann I, Gearry RB, Barclay ML, Demmers P, McCulloch A, Han DY. Single nucleotide polymorphism in the tumor necrosis factor-alpha gene affects inflammatory bowel diseases risk. World J Gastroenterol 2008; 14:4652-61. [PMID: 18698679 PMCID: PMC2738789 DOI: 10.3748/wjg.14.4652] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM: To investigate the role that single nucleotide polymorphisms (SNPs) in the promoter of the tumour necrosis factor-alpha (TNF-α) gene play in the risk of inflammatory bowel diseases (IBDs) in a New Zealand population, in the context of international studies.
METHODS: DNA samples from 388 patients with Crohn’s disease (CD), 405 ulcerative colitis (UC), 27 indeterminate colitis (IC) and 201 randomly selected controls, from Canterbury, New Zealand were screened for 3 common polymorphisms in the TNF-α receptor: -238 G→A, -308 G→A and -857C→T, using a TaqmanR assay. A meta-analysis was performed on the data obtained on these polymorphisms combined with that from other published studies.
RESULTS: Individuals carrying the -308 G/A allele had a significantly (OR = 1.91, χ2 = 17.36, P < 0.0001) increased risk of pancolitis, and a 1.57-fold increased risk (OR = 1.57, χ2 = 4.34, P = 0.037) of requiring a bowel resection in UC. Carrying the -857 C/T variant decreased the risk of ileocolonic CD (OR = 0.56, χ2 = 4.32, P = 0.037), and the need for a bowel resection (OR = 0.59, χ2 = 4.85, P = 0.028). The risk of UC was reduced in individuals who were smokers at diagnosis, (OR = 0.48, χ2 = 4.86, P = 0.028).
CONCLUSION: TNF-α is a key cytokine known to play a role in inflammatory response, and the locus for the gene is found in the IBD3 region on chromosome 6p21, known to be associated with an increased risk for IBD. The -308 G/A SNP in the TNF-α promoter is functional, and may account in part for the increased UC risk associated with the IBD3 genomic region. The -857 C/T SNP may decrease IBD risk in certain groups. Pharmaco- or nutrigenomic approaches may be desirable for individuals with such affected genotypes.
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