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Foster JA, Hawk GS, Landy DC, Griffin JT, Bernard AC, Oyler DR, Southall WGS, Muhammad M, Sierra-Arce CR, Mounce SD, Borgida JS, Xiang L, Aneja A. Does Scheduled Low-Dose Short-Term NSAID (Ketorolac) Modulate Cytokine Levels After Orthopaedic Polytrauma? A Secondary Analysis of a Randomized Clinical Trial. J Orthop Trauma 2024; 38:358-365. [PMID: 38506517 DOI: 10.1097/bot.0000000000002807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/11/2024] [Indexed: 03/21/2024]
Abstract
OBJECTIVES To determine whether scheduled low-dose, short-term ketorolac modulates cytokine concentrations in orthopaedic polytrauma patients. METHODS DESIGN Secondary analysis of a double-blinded, randomized controlled trial. SETTING Single Level I trauma center from August 2018 to October 2022. PATIENT SELECTION CRITERIA Orthopaedic polytrauma patients between 18 and 75 years with a New Injury Severity Score greater than 9 were enrolled. Participants were randomized to receive 15 mg of intravenous ketorolac every 6 hours for up to 5 inpatient days or 2 mL of intravenous saline similarly. OUTCOME MEASURES AND COMPARISONS Daily concentrations of prostaglandin E2 and interleukin (IL)-1a, IL-1b, IL-6, and IL-10. Clinical outcomes included hospital and intensive care unit length of stay, pulmonary complications, and acute kidney injury. RESULTS Seventy orthopaedic polytrauma patients were enrolled, with 35 participants randomized to the ketorolac group and 35 to the placebo group. The overall IL-10 trend over time was significantly different in the ketorolac group ( P = 0.043). IL-6 was 65.8% higher at enrollment compared to day 3 ( P < 0.001) when aggregated over both groups. There was no significant treatment effect for prostaglandin E2, IL-1a, or IL-1b ( P > 0.05). There were no significant differences in clinical outcomes between groups ( P > 0.05). CONCLUSIONS Scheduled low-dose, short-term, intravenous ketorolac was associated with significantly different mean trends in IL-10 concentration in orthopaedic polytrauma patients with no significant differences in prostaglandin E2, IL-1a, IL-1b, or IL-6 levels between groups. The treatment did not have an impact on clinical outcomes of hospital or intensive care unit length of stay, pulmonary complications, or acute kidney injury. LEVEL OF EVIDENCE Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Jeffrey A Foster
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | - Gregory S Hawk
- Dr Bing Zhang Department of Statistics, University of Kentucky, Lexington, KY
| | | | - Jarod T Griffin
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | - Andrew C Bernard
- Department of Trauma and Acute Care Surgery, University of Kentucky, Lexington, KY
| | - Douglas R Oyler
- Pharmacy Practice & Science Department, University of Kentucky, Lexington, KY
| | - Wyatt G S Southall
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY; and
| | - Maaz Muhammad
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | | | - Samuel D Mounce
- Department of Orthopaedic Surgery & Sports Medicine, University of Kentucky, Lexington, KY; and
| | - Jacob S Borgida
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
| | - Lusha Xiang
- US Army Institute of Surgical Research, San Antonio, TX
| | - Arun Aneja
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA
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Hedley KE, Cuskelly A, Callister RJ, Horvat JC, Hodgson DM, Tadros MA. The medulla oblongata shows a sex-specific inflammatory response to systemic neonatal lipopolysaccharide. J Neuroimmunol 2024; 389:578316. [PMID: 38394966 DOI: 10.1016/j.jneuroim.2024.578316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024]
Abstract
Early life inflammation has been linked to long-term modulation of behavioural outcomes due to the central nervous system, but it is now becoming apparent it is also linked to dysfunction of visceral physiology. The medulla oblongata contains a number of nuclei critical for homeostasis, therefore we utilised the well-established model of neonatal lipopolysaccharide (LPS) exposure to examine the immediate and long-term impacts of systemic inflammation on the medulla oblongata. Wistar rats were injected with LPS or saline on postnatal days 3 and 5, with tissues collected on postnatal days 7 or 90 in order to assess expression of inflammatory mediators and microglial morphology in autonomic regions of the medulla oblongata. We observed a distinct sex-specific response of all measured inflammatory mediators at both ages, as well as significant neonatal sex differences in inflammatory mediators within saline groups. At both ages, microglial morphology had significant changes in branch length and soma size in a sex-specific manner in response to LPS exposure. This data not only highlights the strong sex-specific response of neonates to LPS administration, but also the significant life-long impact on the medulla oblongata and the potential altered control of visceral organs.
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Affiliation(s)
- Kateleen E Hedley
- School of Biomedical Sciences & Pharmacy, University of Newcastle, NSW, Australia; Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Annalisa Cuskelly
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia; School of Psychological Sciences, University of Newcastle, NSW, Australia; School of Education, University of Newcastle, NSW, Australia
| | - Robert J Callister
- School of Biomedical Sciences & Pharmacy, University of Newcastle, NSW, Australia; Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Jay C Horvat
- School of Biomedical Sciences & Pharmacy, University of Newcastle, NSW, Australia; Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Deborah M Hodgson
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia; School of Psychological Sciences, University of Newcastle, NSW, Australia
| | - Melissa A Tadros
- School of Biomedical Sciences & Pharmacy, University of Newcastle, NSW, Australia; Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.
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3
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Skrzydlewska E, Łuczaj W, Biernacki M, Wójcik P, Jarocka-Karpowicz I, Orehovec B, Baršić B, Tarle M, Kmet M, Lukšić I, Marušić Z, Bauer G, Žarković N. Preliminary Comparison of Molecular Antioxidant and Inflammatory Mechanisms Determined in the Peripheral Blood Granulocytes of COVID-19 Patients. Int J Mol Sci 2023; 24:13574. [PMID: 37686388 PMCID: PMC10488240 DOI: 10.3390/ijms241713574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023] Open
Abstract
The aim of this study was to evaluate selected parameters of redox signaling and inflammation in the granulocytes of COVID-19 patients who recovered and those who died. Upon admission, the patients did not differ in terms of any relevant clinical parameter apart from the percentage of granulocytes, which was 6% higher on average in those patients who died. Granulocytes were isolated from the blood of 15 healthy people and survivors and 15 patients who died within a week, and who were selected post hoc for analysis according to their matching gender and age. They differed only in the lethal outcome, which could not be predicted upon arrival at the hospital. The proteins level (respective ELISA), antioxidant activity (spectrophotometry), and lipid mediators (UPUPLC-MS) were measured in the peripheral blood granulocytes obtained via gradient centrifugation. The levels of Nrf2, HO-1, NFκB, and IL-6 were higher in the granulocytes of COVID-19 patients who died within a week, while the activity of cytoplasmic Cu,Zn-SOD and mitochondrial Mn-SOD and IL-2/IL-10 were lower in comparison to the levels observed in survivors. Furthermore, in the granulocytes of those patients who died, an increase in pro-inflammatory eicosanoids (PGE2 and TXB2), together with elevated cannabinoid receptors 1 and 2 (associated with a decrease in the anti-inflammatory 15d-PGJ2), were found. Hence, this study suggests that by triggering transcription factors, granulocytes activate inflammatory and redox signaling, leading to the production of pro-inflammatory eicosanoids while reducing cellular antioxidant capacity through SOD, thus expressing an altered response to COVID-19, which may result in the onset of systemic oxidative stress, ARDS, and the death of the patient.
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Affiliation(s)
- Elżbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (W.Ł.); (M.B.); (P.W.); (I.J.-K.)
| | - Wojciech Łuczaj
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (W.Ł.); (M.B.); (P.W.); (I.J.-K.)
| | - Michał Biernacki
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (W.Ł.); (M.B.); (P.W.); (I.J.-K.)
| | - Piotr Wójcik
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (W.Ł.); (M.B.); (P.W.); (I.J.-K.)
| | - Iwona Jarocka-Karpowicz
- Department of Analytical Chemistry, Medical University of Bialystok, 15-222 Bialystok, Poland; (W.Ł.); (M.B.); (P.W.); (I.J.-K.)
| | - Biserka Orehovec
- Clinical Hospital Dubrava, HR-10000 Zagreb, Croatia; (B.O.); (B.B.); (M.T.); (M.K.); (I.L.)
| | - Bruno Baršić
- Clinical Hospital Dubrava, HR-10000 Zagreb, Croatia; (B.O.); (B.B.); (M.T.); (M.K.); (I.L.)
| | - Marko Tarle
- Clinical Hospital Dubrava, HR-10000 Zagreb, Croatia; (B.O.); (B.B.); (M.T.); (M.K.); (I.L.)
| | - Marta Kmet
- Clinical Hospital Dubrava, HR-10000 Zagreb, Croatia; (B.O.); (B.B.); (M.T.); (M.K.); (I.L.)
| | - Ivica Lukšić
- Clinical Hospital Dubrava, HR-10000 Zagreb, Croatia; (B.O.); (B.B.); (M.T.); (M.K.); (I.L.)
- School of Medicine, University of Zagreb, HR-10000 Zagreb, Croatia
| | - Zlatko Marušić
- Division of Pathology, Clinical Hospital Centre Zagreb, HR-10000 Zagreb, Croatia;
| | - Georg Bauer
- Institute of Virology, Medical Center–University of Freiburg, 79104 Freiburg, Germany;
| | - Neven Žarković
- Laboratory for Oxidative Stress (LabOS), Ruđer Bošković Institute, HR-10000 Zagreb, Croatia
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Sarkar OS, Donninger H, Al Rayyan N, Chew LC, Stamp B, Zhang X, Whitt A, Li C, Hall M, Mitchell RA, Zippelius A, Eaton J, Chesney JA, Yaddanapudi K. Monocytic MDSCs exhibit superior immune suppression via adenosine and depletion of adenosine improves efficacy of immunotherapy. SCIENCE ADVANCES 2023; 9:eadg3736. [PMID: 37390211 PMCID: PMC10313166 DOI: 10.1126/sciadv.adg3736] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 05/26/2023] [Indexed: 07/02/2023]
Abstract
Immune checkpoint inhibitor (ICI) therapy is effective against many cancers for a subset of patients; a large percentage of patients remain unresponsive to this therapy. One contributing factor to ICI resistance is accumulation of monocytic myeloid-derived suppressor cells (M-MDSCs), a subset of innate immune cells with potent immunosuppressive activity against T lymphocytes. Here, using lung, melanoma, and breast cancer mouse models, we show that CD73-expressing M-MDSCs in the tumor microenvironment (TME) exhibit superior T cell suppressor function. Tumor-derived PGE2, a prostaglandin, directly induces CD73 expression in M-MDSCs via both Stat3 and CREB. The resulting CD73 overexpression induces elevated levels of adenosine, a nucleoside with T cell-suppressive activity, culminating in suppression of antitumor CD8+ T cell activity. Depletion of adenosine in the TME by the repurposed drug PEGylated adenosine deaminase (PEG-ADA) increases CD8+ T cell activity and enhances response to ICI therapy. Use of PEG-ADA can therefore be a therapeutic option to overcome resistance to ICIs in cancer patients.
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Affiliation(s)
- Omar S. Sarkar
- Department of Microbiology and Immunology, University of Louisville, Louisville, KY, USA
| | - Howard Donninger
- Department of Medicine, University of Louisville, Louisville, KY, USA
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
- Experimental Therapeutics Program, University of Louisville, Louisville, KY, USA
| | - Numan Al Rayyan
- Department of Medicine, University of Louisville, Louisville, KY, USA
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
- Natural Agricultural Research Center, P.O. Box 639, Baq'a 19381, Jordan
| | - Lewis C. Chew
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Bryce Stamp
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Xiang Zhang
- Department of Chemistry, University of Louisville, Louisville, KY, USA
| | - Aaron Whitt
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA
| | - Chi Li
- Department of Medicine, University of Louisville, Louisville, KY, USA
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
- Experimental Therapeutics Program, University of Louisville, Louisville, KY, USA
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA
| | - Melissa Hall
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Robert A. Mitchell
- Department of Microbiology and Immunology, University of Louisville, Louisville, KY, USA
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA
- Immuno-Oncology Group, Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Alfred Zippelius
- Center for Immunotherapy, Cancer Center Medical Oncology, University Hospital Basel, Switzerland
| | - John Eaton
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, USA
- Immuno-Oncology Group, Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Jason A. Chesney
- Department of Medicine, University of Louisville, Louisville, KY, USA
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA
- Immuno-Oncology Group, Brown Cancer Center, University of Louisville, Louisville, KY, USA
| | - Kavitha Yaddanapudi
- Department of Microbiology and Immunology, University of Louisville, Louisville, KY, USA
- Department of Surgery, Division of Immunotherapy, University of Louisville, Louisville, KY, USA
- Immuno-Oncology Group, Brown Cancer Center, University of Louisville, Louisville, KY, USA
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5
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Lin Y, Lu X, Qiu X, Yin F, Faull KF, Tseng CH, Zhang JJ, Fiehn O, Zhu T, Araujo JA, Zhu Y. Arachidonic acid metabolism and inflammatory biomarkers associated with exposure to polycyclic aromatic hydrocarbons. ENVIRONMENTAL RESEARCH 2022; 212:113498. [PMID: 35613629 DOI: 10.1016/j.envres.2022.113498] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/11/2022] [Accepted: 05/15/2022] [Indexed: 06/15/2023]
Abstract
Exposure to polycyclic aromatic hydrocarbons (PAHs) has been associated with systemic inflammation, yet what mechanisms regulate PAHs' inflammatory effects are less understood. This study evaluated the change of arachidonic acid (ARA) metabolites and inflammatory biomarkers in response to increased exposure to PAHs among 26 non-smoking healthy travelers from Los Angeles to Beijing. Traveling from Los Angeles to Beijing significantly increased urinary metabolites of dibenzofuran (800%), fluorene (568%), phenanthrene (277%), and pyrene (176%), accompanied with increased C-reactive protein, fibrinogen, IL-8, and IL-10, and decreased MCP-1, sCD40L, and sCD62P levels in the blood. Meanwhile, the travel increased the levels of ARA lipoxygenase metabolites that were positively associated with a panel of pro-inflammatory biomarkers. Concentrations of cytochrome P450 metabolite were also increased in Beijing and were negatively associated with sCD62P levels. In contrast, concentrations of ARA cyclooxygenase metabolites were decreased in Beijing and were negatively associated with anti-inflammatory IL-10 levels. Changes in both inflammatory biomarkers and ARA metabolites were reversed 4-7 weeks after participants returned to Los Angeles and were associated with urinary PAH metabolites, but not with other exposures such as secondhand smoke, stress, or diet. These results suggested possible roles of ARA metabolic alteration in PAHs-associated inflammatory effects.
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Affiliation(s)
- Yan Lin
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Xinchen Lu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, And Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Xinghua Qiu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, And Center for Environment and Health, Peking University, Beijing 100871, PR China.
| | - Fen Yin
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Kym F Faull
- Pasarow Mass Spectrometry Laboratory, Jane and Terry Semel Institute for Neuroscience and Human Behavior and Department of Psychiatry & Behavioral Sciences, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Chi-Hong Tseng
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Junfeng Jim Zhang
- Global Health Institute, Nicholas School of the Environment, Duke University, Durham, NC 27705, USA
| | - Oliver Fiehn
- NIH-West Coast Metabolomics Center, University of California, Davis, 451 Health Sciences Drive, Davis, CA 95616, USA
| | - Tong Zhu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, And Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Jesus A Araujo
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA; Division of Cardiology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California Los Angeles, Los Angeles, CA 90095, USA.
| | - Yifang Zhu
- Department of Environmental Health Sciences, Jonathan and Karin Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA.
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Schuldt L, Reimann M, von Brandenstein K, Steinmetz J, Döding A, Schulze-Späte U, Jacobs C, Symmank J. Palmitate-Triggered COX2/PGE2-Related Hyperinflammation in Dual-Stressed PdL Fibroblasts Is Mediated by Repressive H3K27 Trimethylation. Cells 2022; 11:955. [PMID: 35326406 PMCID: PMC8946768 DOI: 10.3390/cells11060955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 02/08/2023] Open
Abstract
The interrelationships between periodontal disease, obesity-related hyperlipidemia and mechanical forces and their modulating effects on the epigenetic profile of periodontal ligament (PdL) cells are assumed to be remarkably complex. The PdL serves as a connective tissue between teeth and alveolar bone and is involved in pathogen defense and the inflammatory responses to mechanical stimuli occurring during tooth movement. Altered inflammatory signaling could promote root resorption and tooth loss. Hyperinflammatory COX2/PGE2 signaling was reported for human PdL fibroblasts (HPdLFs) concomitantly stressed with Porphyromonas gingivalis lipopolysaccharides and compressive force after exposure to palmitic acid (PA). The aim of this study was to investigate the extent to which this was modulated by global and gene-specific changes in histone modifications. The expression of key epigenetic players and global H3Kac and H3K27me3 levels were quantitatively evaluated in dual-stressed HPdLFs exposed to PA, revealing a minor force-related reduction in repressive H3K27me3. UNC1999-induced H3K27me3 inhibition reversed the hyperinflammatory responses of dual-stressed PA cultures characterized by increased COX2 expression, PGE2 secretion and THP1 adhesion. The reduced expression of the gene encoding the anti-inflammatory cytokine IL-10 and the increased presence of H3K27me3 at its promoter-associated sites were reversed by inhibitor treatment. Thus, the data highlight an important epigenetic interplay between the different stimuli to which the PdL is exposed.
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Affiliation(s)
- Lisa Schuldt
- Orthodontic Research Laboratory, Department of Orthodontics, University Hospital Jena, Leutragraben 3, 07743 Jena, Germany; (L.S.); (K.v.B.); (J.S.)
| | - Michael Reimann
- Section of Geriodontics, Department of Conservative Dentistry and Periodontics, University Hospital Jena, Leutragraben 3, 07743 Jena, Germany; (M.R.); (A.D.); (U.S.-S.)
| | - Katrin von Brandenstein
- Orthodontic Research Laboratory, Department of Orthodontics, University Hospital Jena, Leutragraben 3, 07743 Jena, Germany; (L.S.); (K.v.B.); (J.S.)
| | - Julia Steinmetz
- Orthodontic Research Laboratory, Department of Orthodontics, University Hospital Jena, Leutragraben 3, 07743 Jena, Germany; (L.S.); (K.v.B.); (J.S.)
| | - Annika Döding
- Section of Geriodontics, Department of Conservative Dentistry and Periodontics, University Hospital Jena, Leutragraben 3, 07743 Jena, Germany; (M.R.); (A.D.); (U.S.-S.)
| | - Ulrike Schulze-Späte
- Section of Geriodontics, Department of Conservative Dentistry and Periodontics, University Hospital Jena, Leutragraben 3, 07743 Jena, Germany; (M.R.); (A.D.); (U.S.-S.)
| | - Collin Jacobs
- Center for Dental, Oral and Maxillofacial Medicine, Department of Orthodontics, University Hospital Jena, 07743 Jena, Germany;
| | - Judit Symmank
- Orthodontic Research Laboratory, Department of Orthodontics, University Hospital Jena, Leutragraben 3, 07743 Jena, Germany; (L.S.); (K.v.B.); (J.S.)
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Goulart da Silva G, de Oliveira Braga LE, Souza de Oliveira EC, Valério Tinti S, de Carvalho JE, Goldoni Lazarini J, Rosalen PL, Dionísio AP, Tasca Gois Ruiz AL. Cashew apple byproduct: Gastroprotective effects of standardized extract. JOURNAL OF ETHNOPHARMACOLOGY 2021; 269:113744. [PMID: 33359862 DOI: 10.1016/j.jep.2020.113744] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/04/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The incidence of gastric mucosa lesions in the adult population has increased mainly due to the continued use of nonsteroidal anti-inflammatory drugs (NSAIDs). The cashew (Anacardium occidentale L.) is a tropical tree, cultivated in several countries, whose barks, leaves and pseudofruit (cashew apple) are popularly used in traditional medicine for the treatment of many diseases, including gastric ulcer. AIM Our study evaluated the potential gastroprotective effect of the carotenoid and anacardic acids-enriched aqueous extract (CAE), prepared from cashew apple pomace, in the dose-repeated acetylsalicylic acid (ASA)-induced gastric lesions model in rats. MATERIAL AND METHODS After randomly distribution into five group (G1 - G5, n = 8 animals/group), male Wistar rats were daily treated with ASA solution (200 mg/kg, 5 ml/kg, G2 - G5) or potable water (Satellite group, G1) during 14 days. From 8th to 14th experimental day, rats in G3 - G5 groups were orally treated with CAE (50, 100 and 500 mg/kg, 5 ml/kg, respectively). Body weight was measured on 0, 7th and 14th day. On the 14th experimental day, all surviving animals were euthanized for macroscopic evaluation of the inner organs and stomach removal. After weighting, each stomach was properly prepared for biochemical analysis [myeloperoxidase activity (MPO), reduced glutathione analysis (GSH), IL-1β, CXCL2/MIP-2, TNF-α and IL-10 levels]. RESULTS At the most efficient dose (100 mg/kg, p.o.), CAE-treated animals showed a slight improvement in the macroscopic aspect of gastric mucosa associated with significant (p < 0.05) reduced levels of IL-1β, CXCL2/MIP-2, and MPO activity besides increased levels of GSH (partially), and IL-10 in stomach tissues. CONCLUSIONS The present study demonstrated that the carotenoid and anacardic acids-enriched extract obtained from cashew apple pomace is a promising raw material for the development of herbal medicine and/or functional food supplements for the adjuvant treatment of NSAIDs-induced gastric ulcers.
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Affiliation(s)
- Gisele Goulart da Silva
- Chemical, Biological and Agricultural Pluridisciplinary Research Center, University of Campinas, CPQBA/UNICAMP, 13148-218, Paulínia, SP, Brazil; Postgraduate Program in Dentistry, Piracicaba Dental School, University of Campinas, FOP/UNICAMP, 13414-903, Piracicaba, SP, Brazil.
| | - Lucia Elaine de Oliveira Braga
- Chemical, Biological and Agricultural Pluridisciplinary Research Center, University of Campinas, CPQBA/UNICAMP, 13148-218, Paulínia, SP, Brazil; Postgraduate Program in Dentistry, Piracicaba Dental School, University of Campinas, FOP/UNICAMP, 13414-903, Piracicaba, SP, Brazil.
| | - Ellen Cristina Souza de Oliveira
- Chemical, Biological and Agricultural Pluridisciplinary Research Center, University of Campinas, CPQBA/UNICAMP, 13148-218, Paulínia, SP, Brazil.
| | - Sirlene Valério Tinti
- Chemical, Biological and Agricultural Pluridisciplinary Research Center, University of Campinas, CPQBA/UNICAMP, 13148-218, Paulínia, SP, Brazil.
| | - João Ernesto de Carvalho
- Faculty of Pharmaceutical Sciences, University of Campinas, FCF/UNICAMP, 13083-871, Campinas, SP, Brazil.
| | - Josy Goldoni Lazarini
- Postgraduate Program in Dentistry, Piracicaba Dental School, University of Campinas, FOP/UNICAMP, 13414-903, Piracicaba, SP, Brazil.
| | - Pedro Luiz Rosalen
- Postgraduate Program in Dentistry, Piracicaba Dental School, University of Campinas, FOP/UNICAMP, 13414-903, Piracicaba, SP, Brazil; Biological Sciences Graduate Program, Federal University of Alfenas - UNIFAL-MG, 37130-001, Alfenas, MG, Brazil.
| | | | - Ana Lucia Tasca Gois Ruiz
- Faculty of Pharmaceutical Sciences, University of Campinas, FCF/UNICAMP, 13083-871, Campinas, SP, Brazil.
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8
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Liberale L, Ministrini S, Carbone F, Camici GG, Montecucco F. Cytokines as therapeutic targets for cardio- and cerebrovascular diseases. Basic Res Cardiol 2021; 116:23. [PMID: 33770265 PMCID: PMC7997823 DOI: 10.1007/s00395-021-00863-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/16/2021] [Indexed: 02/07/2023]
Abstract
Despite major advances in prevention and treatment, cardiac and cerebral atherothrombotic complications still account for substantial morbidity and mortality worldwide. In this context, inflammation is involved in the chronic process leading atherosclerotic plaque formation and its complications, as well as in the maladaptive response to acute ischemic events. For this reason, modulation of inflammation is nowadays seen as a promising therapeutic strategy to counteract the burden of cardio- and cerebrovascular disease. Being produced and recognized by both inflammatory and vascular cells, the complex network of cytokines holds key functions in the crosstalk of these two systems and orchestrates the progression of atherothrombosis. By binding to membrane receptors, these soluble mediators trigger specific intracellular signaling pathways eventually leading to the activation of transcription factors and a deep modulation of cell function. Both stimulatory and inhibitory cytokines have been described and progressively reported as markers of disease or interesting therapeutic targets in the cardiovascular field. Nevertheless, cytokine inhibition is burdened by harmful side effects that will most likely prevent its chronic use in favor of acute administrations in well-selected subjects at high risk. Here, we summarize the current state of knowledge regarding the modulatory role of cytokines on atherosclerosis, myocardial infarction, and stroke. Then, we discuss evidence from clinical trials specifically targeting cytokines and the potential implication of these advances into daily clinical practice.
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Affiliation(s)
- Luca Liberale
- Center for Molecular Cardiology, University of Zürich, Wagistrasse 12, 8952, Schlieren, Switzerland. .,First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.
| | - Stefano Ministrini
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,Internal Medicine, Angiology and Atherosclerosis, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genoa, Italian Cardiovascular Network, Genoa, Italy
| | - Giovanni G Camici
- Center for Molecular Cardiology, University of Zürich, Wagistrasse 12, 8952, Schlieren, Switzerland.,Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland.,Department of Research and Education, University Hospital Zurich, Zurich, Switzerland
| | - Fabrizio Montecucco
- IRCCS Ospedale Policlinico San Martino Genoa, Italian Cardiovascular Network, Genoa, Italy.,First Clinic of Internal Medicine, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
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9
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Cotrone TS, Hocog CB, Ramsey JT, Sanchez MA, Sullivan HM, Scrimgeour AG. Phenotypic characterization of frontal cortex microglia in a rat model of post-traumatic stress disorder. Brain Behav 2021; 11:e02011. [PMID: 33434400 PMCID: PMC7994680 DOI: 10.1002/brb3.2011] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION Post-traumatic stress disorder (PTSD) is an anxiety disorder induced by psychologically traumatic events. Using a rat model, this study aimed to determine whether psychological trauma alters relative expression between pro-inflammatory and anti-inflammatory markers in microglia. To meet this goal, expression of genes encoding i-NOS, arginase, TNF-α, interleukin-10, CD74, and Mannose Receptor C was analyzed on multiple days following trauma exposure. METHODS Single-prolonged stress (SPS) was used to model PTSD in male Sprague-Dawley rats. Twenty-four rats (12 Controls and 12 SPS-exposed) were sacrificed on Days 1, 3, and 7 post-SPS. Twenty-four (12 Controls and 12 SPS-exposed) additional rats were exposed to classical fear conditioning on Day 7, and fear extinction on Days 8, 9, 10, 15, 16, and 17. Freezing behavior was measured to assess fear resolution. Microglial isolates were collected from the frontal cortex, and RNA was extracted. Changes in relative expression of target genes were quantified via RT-PCR. RESULTS SPS rats showed significant decreases in IL-10 and TNF-α expression and increases in the i-NOS:Arginase and TNF-α:IL-10 ratios compared to Controls on Day 1, but not on Day 3 or Day 7 for any of the dependent variables. Day 17 SPS rats showed a significant decrease in IL-10 expression and an increase in the TNF-α:IL-10 ratio, further characterized by a significant inverse relationship between IL-10 expression and fear persistence. CONCLUSION Psychological trauma impacts the immunological phenotype of microglia of the frontal cortex. Consequently, future studies should further evaluate the mechanistic role of microglia in PTSD pathology.
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Affiliation(s)
- Thomas S Cotrone
- Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Charina B Hocog
- Veterinary Support and Oversight Branch, U.S. Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Joseph T Ramsey
- Veterinary Support and Oversight Branch, U.S. Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Marcus A Sanchez
- Veterinary Support and Oversight Branch, U.S. Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Heather M Sullivan
- Veterinary Support and Oversight Branch, U.S. Army Research Institute of Environmental Medicine, Natick, MA, USA
| | - Angus G Scrimgeour
- Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine, Natick, MA, USA
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10
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Vu SH, Bernardo Reyes AW, Ngoc Huy TX, Min W, Lee HJ, Kim HJ, Lee JH, Kim S. Prostaglandin I2 (PGI 2) inhibits Brucella abortus internalization in macrophages via PGI 2 receptor signaling, and its analogue affects immune response and disease outcome in mice. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 115:103902. [PMID: 33091457 DOI: 10.1016/j.dci.2020.103902] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/29/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
To date, the implications of prostaglandin I2 (PGI2), a prominent lipid mediator for modulation of immune responses, has not been clearly understood in Brucella infection. In this study, we found that cyclooxygenase-2 (COX-2) was significantly expressed in both infected bone marrow-derived macrophages (BMMs) and RAW 264.7 cells. Prostaglandin I2 synthase (PTGIS) expression was not significantly changed, and PGI2receptor (PTGIR) expression was downregulated in BMMs but upregulated in RAW 264.7 macrophages at late infection. Here, we presented that PGI2, a COX-derived metabolite, was produced by macrophages during Brucella infection and its production was regulated by COX-2 and IL-10. We suggested that PGI2 and selexipag, a potent PGI2 analogue, inhibited Brucella internalization through IP signaling which led to down-regulation of F-actin polymerization and p38α MAPK activity. Administration with selexipag suppressed immune responses and resulted in a notable reduction in bacterial burden in spleen of Brucella-challenged mice. Taken together, our study is the first to characterize PGI2 synthesis and its effect in evasion strategy of macrophages against Brucella infection.
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Affiliation(s)
- Son Hai Vu
- Institute of Applied Sciences, Ho Chi Minh City University of Technology - HUTECH, 475A Dien Bien Phu St., Ward 25, Binh Thanh District, Ho Chi Minh City, Viet Nam; Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | | | - Tran Xuan Ngoc Huy
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Wongi Min
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Hu Jang Lee
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Hyun-Jin Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - John Hwa Lee
- College of Veterinary Medicine, Chonbuk National University, Iksan, 54596, Republic of Korea
| | - Suk Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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11
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Lee YM, Shin DW, Lim BO. Chlorogenic Acid Improves Symptoms of Inflammatory Bowel Disease in Interleukin-10 Knockout Mice. J Med Food 2020; 23:1043-1053. [PMID: 33054539 DOI: 10.1089/jmf.2019.4621] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic intestinal inflammation that is highly prevalent worldwide. Interleukin (IL)-10 can effectively inhibit negative cascades such as the production of inflammatory mediators (inducible nitric oxide synthase [iNOS], cyclooxygenase-2), accumulation of inflammatory infiltrates (macrophages, eosinophils, neutrophils), toxicity (lower T cell subsets), and secretion of pro-inflammatory cytokines (IL-1β, TNF-α) in tissues such as the spleen, mesenteric lymph nodes (MLN), Peyer's patch (PP), and colon. In this study, we investigated whether chlorogenic acid (CHA) can regulate inflammation in IL-10 knockout (KO) mice used as an IBD animal model. CHA significantly increased the ratio of CD4+/CD8+, T cell subsets in PP, and MLN of IL-10 KO mice. In addition, CHA also morphologically attenuated colon inflammation in IL-10 KO mice. We demonstrated that CHA significantly reduced the expression levels of iNOS, IL-1β, TNF-α, which were highly expressed in IL-10 KO mice. Therefore, CHA may provide beneficial effects for improving IBD by decreasing inflammations.
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Affiliation(s)
- Young Min Lee
- College of Biomedical and Health Science, Konkuk University, Chungju, Korea
| | - Dong Wook Shin
- College of Biomedical and Health Science, Konkuk University, Chungju, Korea
| | - Beong Ou Lim
- College of Biomedical and Health Science, Konkuk University, Chungju, Korea.,Research Institute of Inflammatory Diseases, Konkuk University, Chungju, Korea
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12
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Mukhopadhyay S, Heinz E, Porreca I, Alasoo K, Yeung A, Yang HT, Schwerd T, Forbester JL, Hale C, Agu CA, Choi YH, Rodrigues J, Capitani M, Jostins-Dean L, Thomas DC, Travis S, Gaffney D, Skarnes WC, Thomson N, Uhlig HH, Dougan G, Powrie F. Loss of IL-10 signaling in macrophages limits bacterial killing driven by prostaglandin E2. J Exp Med 2020; 217:132614. [PMID: 31819956 PMCID: PMC7041704 DOI: 10.1084/jem.20180649] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/09/2019] [Accepted: 10/25/2019] [Indexed: 12/19/2022] Open
Abstract
Cytokines and lipid mediators are key regulators of inflammation; but how they are mechanistically linked is poorly understood. Here, Mukhopadhyay et al. show a novel regulation between cytokine IL-10 and lipid mediator PGE2 that functionally connects them to intestinal inflammation. Loss of IL-10 signaling in macrophages (Mφs) leads to inflammatory bowel disease (IBD). Induced pluripotent stem cells (iPSCs) were generated from an infantile-onset IBD patient lacking a functional IL10RB gene. Mφs differentiated from IL-10RB−/− iPSCs lacked IL-10RB mRNA expression, were unable to phosphorylate STAT3, and failed to reduce LPS induced inflammatory cytokines in the presence of exogenous IL-10. IL-10RB−/− Mφs exhibited a striking defect in their ability to kill Salmonella enterica serovar Typhimurium, which was rescuable after experimentally introducing functional copies of the IL10RB gene. Genes involved in synthesis and receptor pathways for eicosanoid prostaglandin E2 (PGE2) were more highly induced in IL-10RB−/− Mφs, and these Mφs produced higher amounts of PGE2 after LPS stimulation compared with controls. Furthermore, pharmacological inhibition of PGE2 synthesis and PGE2 receptor blockade enhanced bacterial killing in Mφs. These results identify a regulatory interaction between IL-10 and PGE2, dysregulation of which may drive aberrant Mφ activation and impaired host defense contributing to IBD pathogenesis.
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Affiliation(s)
- Subhankar Mukhopadhyay
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK.,Medical Research Council Centre for Transplantation, Peter Gorer Department of Immunobiology, King's College London, London, UK
| | - Eva Heinz
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | | | - Kaur Alasoo
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - Amy Yeung
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - Huei-Ting Yang
- Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.,Swiss Precision Dignostics Development Company Limited, Bedford, UK
| | - Tobias Schwerd
- Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.,Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Jessica L Forbester
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK.,Division of Infection and Immunity, Cardiff University, Cardiff, UK
| | | | | | - Yoon Ha Choi
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | | | - Melania Capitani
- Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Luke Jostins-Dean
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - David C Thomas
- Department of Medicine, University of Cambridge, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Simon Travis
- Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | | | - William C Skarnes
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK.,The Jackson Laboratory for Genomic Medicine, Farmington, CT
| | - Nicholas Thomson
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK.,Department of Pathogen Molecular Biology, London School of Hygiene and Tropical Medicine, London, UK
| | - Holm H Uhlig
- Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.,Department of Paediatrics, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Gordon Dougan
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK.,Department of Medicine, University of Cambridge, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Fiona Powrie
- Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.,The Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
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13
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Velloso Alvarez A, Boone LH, Pondugula SR, Caldwell F, Wooldridge AA. Effects of Autologous Conditioned Serum, Autologous Protein Solution, and Triamcinolone on Inflammatory and Catabolic Gene Expression in Equine Cartilage and Synovial Explants Treated With IL-1β in Co-culture. Front Vet Sci 2020; 7:323. [PMID: 32671108 PMCID: PMC7332692 DOI: 10.3389/fvets.2020.00323] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/11/2020] [Indexed: 01/13/2023] Open
Abstract
Autologous conditioned serum (ACS) and autologous protein solution (APS) are newer therapeutic options for osteoarthritis (OA). Co-culture of cartilage and synovium stimulated with IL-1β produces a similar physiologic response to tissues from naturally-ocurring OA. The study objective was to investigate the effects of ACS, APS, and triamcinolone (TA) on inflammatory and catabolic gene expression of inflamed joint tissues in co-culture. Blood was collected and processed for ACS and APS from six horses. Cartilage and synovial explants were harvested from the stifle, placed in co-culture, and treated as: (1) unstimulated control (2) stimulated control (3) ACS at 25% v/v (4) ACS at 50% v/v (5) APS at 25% v/v (6) APS at 50% v/v, (7) TA (10−6 M). Treatment groups 2–7 were stimulated with IL-1β (10 ng/ml). Cultures were maintained for 96 hours, and then both media and explants were harvested for measurement of gene expression and protein. IL-1β stimulation significantly increased IL-1β (p = 0.029), IL-8 (p = 0.011) and MMP-3 (p = 0.043) expression in synovium and IL-1β (p = 0.003) and TNF-α (p = 0.001) expression in cartilage. Treatment with 50% ACS and APS v/v downregulated IL-1β expression in cartilage more than TA treatment (p = 0.001 and p = 0.0004) and APS downregulated MMP-1 expression in synovial membrane (p = 0.025). Treatment with ACS and APS caused a trend in upregulation of IL-10 expression in synovium and type II collagen and aggrecan expression in cartilage. PGE2 media concentrations were significantly reduced following treatment with APS (13.7-fold decrease, p = 0.0001) and ACS (4.13-fold decrease, p = 0.024); while TA did not reduce PGE2 significantly (2.3-fold decreased p = 0.406). As disease-modifying therapies, ACS and APS modified the cellular response from synovial membrane and articular cartilage. ACS and APS may offer an improved strategy to improve clinical signs of horses with naturally occurring OA, compared to TA treatment.
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Affiliation(s)
- Ana Velloso Alvarez
- Department of Clinical Sciences, Auburn University, Auburn, AL, United States
| | - Lindsey H Boone
- Department of Clinical Sciences, Auburn University, Auburn, AL, United States
| | | | - Fred Caldwell
- Department of Clinical Sciences, Auburn University, Auburn, AL, United States
| | - Anne A Wooldridge
- Department of Clinical Sciences, Auburn University, Auburn, AL, United States
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14
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Rawat C, Kukal S, Dahiya UR, Kukreti R. Cyclooxygenase-2 (COX-2) inhibitors: future therapeutic strategies for epilepsy management. J Neuroinflammation 2019; 16:197. [PMID: 31666079 PMCID: PMC6822425 DOI: 10.1186/s12974-019-1592-3] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 09/23/2019] [Indexed: 01/15/2023] Open
Abstract
Epilepsy, a common multifactorial neurological disease, affects about 69 million people worldwide constituting nearly 1% of the world population. Despite decades of extensive research on understanding its underlying mechanism and developing the pharmacological treatment, very little is known about the biological alterations leading to epileptogenesis. Due to this gap, the currently available antiepileptic drug therapy is symptomatic in nature and is ineffective in 30% of the cases. Mounting evidences revealed the pathophysiological role of neuroinflammation in epilepsy which has shifted the focus of epilepsy researchers towards the development of neuroinflammation-targeted therapeutics for epilepsy management. Markedly increased expression of key inflammatory mediators in the brain and blood-brain barrier may affect neuronal function and excitability and thus may increase seizure susceptibility in preclinical and clinical settings. Cyclooxygenase-2 (COX-2), an enzyme synthesizing the proinflammatory mediators, prostaglandins, has widely been reported to be induced during seizures and is considered to be a potential neurotherapeutic target for epilepsy management. However, the efficacy of such therapy involving COX-2 inhibition depends on various factors viz., therapeutic dose, time of administration, treatment duration, and selectivity of COX-2 inhibitors. This article reviews the preclinical and clinical evidences supporting the role of COX-2 in seizure-associated neuroinflammation in epilepsy and the potential clinical use of COX-2 inhibitors as a future strategy for epilepsy treatment.
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Affiliation(s)
- Chitra Rawat
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India.,Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research (CSIR), Delhi, India
| | - Samiksha Kukal
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India.,Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research (CSIR), Delhi, India
| | - Ujjwal Ranjan Dahiya
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India.,Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research (CSIR), Delhi, India
| | - Ritushree Kukreti
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India. .,Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research (CSIR), Delhi, India.
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15
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Neranjan Tharuka MD, Bathige SDNK, Oh M, Lee S, Kim MJ, Priyathilaka TT, Lee J. Molecular characterization and expression analysis of big-belly seahorse (Hippocampus abdominalis) interleukin-10 and analysis of its potent anti-inflammatory properties in LPS-induced murine macrophage RAW 264.7 cells. Gene 2018; 685:1-11. [PMID: 30401644 DOI: 10.1016/j.gene.2018.10.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 09/28/2018] [Accepted: 10/19/2018] [Indexed: 10/28/2022]
Abstract
Interleukin-10 (IL-10) is a pleiotropic cytokine involved in the regulation of innate and adaptive immunity. In this study, IL-10 from big-belly seahorse (Hippocampus abdominalis) (HaIL-10) was characterized based on its molecular and functional aspects. The coding sequence of HaIL-10 is 570 bp in length and encodes a 189-amino acid residue protein (calculated molecular weight, 21.89 kDa). The deduced amino acid sequence comprises a typical signal peptide and a mature peptide domain sequence carrying four conserved Cys residues and two additional Cys residues specific to fish. Phylogenetic analysis indicated an evolutionary relationship between HaIL-10 and its counterparts in other vertebrates, with close clustering to the fish-specific homologs. Recombinant HaIL-10 (rHaIL-10) significantly reduced nitric oxide (NO) production by lipopolysaccharide (LPS)-induced murine macrophage RAW 264.7 cells in a concentration-dependent manner but had no effect on cell viability, suggestive of its involvement in immune response. The protein expressions of iNOS and COX-2 were significantly reduced by rHaIL-10 in LPS-induced murine macrophages RAW 264.7 cells. HaIL-10 mRNA expression was observed in all analyzed tissues, with the maximum expression being noted in the kidney and ovary. However, transcriptional levels of HaIL-10 were significantly higher in the blood, gill, and intestine upon in vivo induction with LPS, polyinosinic:polycytidylic acid [poly (I:C)], and Streptococcus iniae. To summarize, our findings help in the improved understanding of the biological functions of HaIL-10 and modulation of HaIL-10 mRNA expression in response to immune stress.
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Affiliation(s)
- M D Neranjan Tharuka
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - S D N K Bathige
- Sri Lanka Institute of Nanotechnology (SLINTEC), Nanotechnology and Science Park, Mahenwatta, Pitipana, Homagama, Sri Lanka
| | - Minyoung Oh
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Seongdo Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Myoung-Jin Kim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Thanthrige Thiunuwan Priyathilaka
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province 63333, Republic of Korea.
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16
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A modified pectic polysaccharide from turmeric (Curcuma longa) with antiulcer effects via anti–secretary, mucoprotective and IL–10 mediated anti–inflammatory mechanisms. Int J Biol Macromol 2018; 118:864-880. [DOI: 10.1016/j.ijbiomac.2018.06.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/03/2018] [Accepted: 06/11/2018] [Indexed: 12/15/2022]
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17
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Dreussi E, Ecca F, Scarabel L, Gagno S, Toffoli G. Immunogenetics of prostate cancer: a still unexplored field of study. Pharmacogenomics 2018; 19:263-283. [PMID: 29325503 DOI: 10.2217/pgs-2017-0163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The immune system is a double-edged sword with regard to the prostate cancer (PCa) battle. Immunogenetics, the study of the potential role of immune-related polymorphisms, is taking its first steps in the treatment of this malignancy. This review summarizes the most recent papers addressing the potential of immunogenetics in PCa, reporting immune-related polymorphisms associated with tumor aggressiveness, treatment toxicity and patients' prognosis. With some peculiarities, RNASEL, IL-6, IL-10, IL-1β and MMP7 have arisen as the most significant biomarkers in PCa treatment and management, having a potential clinical role. Validation prospective clinical studies are required to translate immunogenetics into precision treatment of PCa.
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Affiliation(s)
- Eva Dreussi
- Department of Experimental & Clinical Pharmacology, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, 33081, Italy
| | - Fabrizio Ecca
- Department of Experimental & Clinical Pharmacology, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, 33081, Italy
| | - Lucia Scarabel
- Department of Experimental & Clinical Pharmacology, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, 33081, Italy
| | - Sara Gagno
- Department of Experimental & Clinical Pharmacology, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, 33081, Italy
| | - Giuseppe Toffoli
- Department of Experimental & Clinical Pharmacology, Centro di Riferimento Oncologico, National Cancer Institute, Aviano, 33081, Italy
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18
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Abstract
Bioactive lipids regulate most physiological processes, from digestion to blood flow and from hemostasis to labor. Lipid mediators are also involved in multiple pathologies including cancer, autoimmunity or asthma. The pathological roles of lipid mediators are based on their intricate involvement in the immune system, which comprises source and target cells of these mediators. Based on their biosynthetic origin, bioactive lipids can be grouped into different classes [e.g. sphingolipids, formed from sphingosine or eicosanoids, formed from arachidonic acid (AA)]. Owing to the complexity of different mediator classes and the prominent immunological roles of eicosanoids, this review will focus solely on the immune-regulation of eicosanoids. Eicosanoids do not only control key immune responses (e.g. chemotaxis, antigen presentation, phagocytosis), but they are also subject to reciprocal control by the immune system. Particularly, key immunoregulatory cytokines such as IL-4 and IFN-γ shape the cellular eicosanoid profile, thus providing efficient feedback regulation between cytokine and eicosanoid networks. For the purpose of this review, I will first provide a short overview of the most important immunological functions of eicosanoids with a focus on prostaglandins (PGs) and leukotrienes (LTs). Second, I will summarize the current knowledge on immunological factors that regulate eicosanoid production during infection and inflammation.
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19
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Dhital S, Stokes JV, Park N, Seo KS, Kaplan BLF. Cannabidiol (CBD) induces functional Tregs in response to low-level T cell activation. Cell Immunol 2017; 312:25-34. [PMID: 27865421 PMCID: PMC5327652 DOI: 10.1016/j.cellimm.2016.11.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/07/2016] [Accepted: 11/08/2016] [Indexed: 10/20/2022]
Abstract
Many effects of the non-psychoactive cannabinoid, cannabidiol (CBD), have been described in immune responses induced by strong immunological stimuli. It has also been shown that CBD enhances IL-2 production in response to low-level T cell stimulation. Since IL-2, in combination with TGF-β1, are critical for Treg induction, we hypothesized that CBD would induce CD4+CD25+FOXP3+ Tregs in response to low-level stimulation. Low-level T cell stimulation conditions were established based on minimal CD25 expression in CD4+ cells using suboptimal PMA/Io (4nM/0.05μM, S/o), ultrasuboptimal PMA/Io (1nM/0.0125μM, Us/o) or soluble anti-CD3/28 (400-800ng each, s3/28). CBD increased CD25+FOXP3+ cells from CD4+, CD4+CD25+, and CD4+CD25- T cells, as well as in CD4+ T cells derived from FOXP3-GFP mice. Most importantly, the Us/o+CBD-induced CD4+CD25+ Tregs robustly suppressed responder T cell proliferation, demonstrating that the mechanism by which CBD is immunosuppressive under low-level T cell stimulation involves induction of functional Tregs.
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Affiliation(s)
- Saphala Dhital
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA
| | - John V Stokes
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA
| | - Nogi Park
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA
| | - Keun Seok Seo
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA
| | - Barbara L F Kaplan
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA.
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Dey P, Ray S, Chaudhuri TK. Immunomodulatory activities and phytochemical characterisation of the methanolic extract of Dioscorea alata aerial tuber. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.02.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Zielnik-Jurkiewicz B, Stankiewicz-Szymczak W. Evaluation of the Interleukin-1 Receptor Antagonist and Immunoregulatory Interleukin-10 in the Middle Ear in Chronic Otitis Media With Effusion in Children With and Without Atopy. Clin Exp Otorhinolaryngol 2016; 9:104-8. [PMID: 27090281 PMCID: PMC4881322 DOI: 10.21053/ceo.2015.00129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/19/2015] [Accepted: 05/08/2015] [Indexed: 01/08/2023] Open
Abstract
Objectives The role of pro-inflammatory cytokines in the course of chronic otitis media with effusion (COME) has been documented. However, there are fewer studies on the action of anti-inflammatory cytokines in the middle ear. We sought determine whether there is an association between COME and anti-inflammatory cytokines and whether there are any differences in the cytokine profile in COME children with and without atopy. Methods Eighty-four children were divided into 3 groups: 32 nonatopic children with COME (group NA), 31 atopic children with COME (group A), and 21 children without COME and without atopy (control group C). Specimens from the middle ear were collected and evaluated by enzyme-linked immunosorbent assay for the cytokines interleukin-1 receptor antagonist (IL-1Ra) and immunoregulatory IL-10. Results Significantly higher IL-10 concentrations were found in both nonatopic and atopic children with COME compared to controls. No significant differences in IL-1Ra levels were found between atopic and nonatopic children with COME and the control group. Conclusion We found no differences in the levels of IL-1Ra in atopic and nonatopic children with COME compared to controls. However, we found elevated IL-10 levels in the middle ear effusions from children with COME, with or without atopy. These elevated immunoregulatory cytokine levels suggest a role for new immunomodulatory treatments to prevent disease progression in COME, regardless of atopy.
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Sun X, Cappelletti M, Li Y, Karp CL, Divanovic S, Dey SK. Cnr2 deficiency confers resistance to inflammation-induced preterm birth in mice. Endocrinology 2014; 155:4006-14. [PMID: 25051450 PMCID: PMC4164934 DOI: 10.1210/en.2014-1387] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Infection-induced inflammation, frequently associated with increased production of proinflammatory cytokines, is considered a significant contributor to preterm birth. A G protein-coupled cannabinoid receptor 2 (CB2), encoded by Cnr2, is expressed in various immune cells and was shown to modulate immune responses. We show here that Cnr2, but not Cnr1, deficient mice are resistant to lipopolysaccharide (LPS)-driven preterm birth and suppression of serum progesterone levels. After LPS challenge, Cnr2(-/-) mice exhibited increased serum levels of IL-10 with decreased IL-6 levels. These changes were associated with reduced LPS-induced Ptgs2 expression at the maternal-conceptus interface on day 16 of pregnancy. LPS stimulation of Cnr2(-/-) dendritic cells in vitro resulted in increased IL-10 with reduced IL-6 production and correlated with increased cAMP accumulation. Collectively, our results suggest that increased IL-10 production occurring via augmented cAMP accumulation represents a potential mechanism for the resistance of Cnr2(-/-) mice to LPS-induced preterm birth. These results may have clinical relevance, because currently, there are limited options to prevent preterm birth.
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Affiliation(s)
- Xiaofei Sun
- Division of Reproductive Sciences (X.S., Y.L., S.K.D.), Perinatal Institute, and Division of Cellular and Molecular Immunology (M.C., C.L.K., S.D.), Cincinnati Children's Research Foundation, Cincinnati, Ohio 45229
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Branco da Cunha C, Klumpers DD, Li WA, Koshy ST, Weaver JC, Chaudhuri O, Granja PL, Mooney DJ. Influence of the stiffness of three-dimensional alginate/collagen-I interpenetrating networks on fibroblast biology. Biomaterials 2014; 35:8927-36. [PMID: 25047628 DOI: 10.1016/j.biomaterials.2014.06.047] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 06/25/2014] [Indexed: 12/18/2022]
Abstract
Wound dressing biomaterials are increasingly being designed to incorporate bioactive molecules to promote healing, but the impact of matrix mechanical properties on the biology of resident cells orchestrating skin repair and regeneration remains to be fully understood. This study investigated whether tuning the stiffness of a model wound dressing biomaterial could control the behavior of dermal fibroblasts. Fully interpenetrating networks (IPNs) of collagen-I and alginate were fabricated to enable gel stiffness to be tuned independently of gel architecture, polymer concentration or adhesion ligand density. Three-dimensional cultures of dermal fibroblasts encapsulated within matrices of different stiffness were shown to promote dramatically different cell morphologies, and enhanced stiffness resulted in upregulation of key-mediators of inflammation such as IL-10 and COX-2. These findings suggest that simply modulating the matrix mechanical properties of a given wound dressing biomaterial deposited at the wound site could regulate the progression of wound healing.
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Affiliation(s)
- Cristiana Branco da Cunha
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA; Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), 4200-465 Porto, Portugal; Instituto de Engenharia Biomédica da Universidade do Porto (INEB), 4150-180 Porto, Portugal; Faculdade de Medicina da Universidade do Porto (FMUP)/Hospital S. João, 4200-319 Porto, Portugal
| | - Darinka D Klumpers
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA; Dept. Orthopedic Surgery, Research Institute MOVE, VU University Medical Center, 1081 HV, Amsterdam, The Netherlands
| | - Weiwei A Li
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Sandeep T Koshy
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA; Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 10239, USA
| | - James C Weaver
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Ovijit Chaudhuri
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Pedro L Granja
- Instituto de Engenharia Biomédica da Universidade do Porto (INEB), 4150-180 Porto, Portugal; Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia da Universidade do Porto (FEUP), 4200-465 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar da Universidade do Porto (ICBAS), 4050-313 Porto, Portugal
| | - David J Mooney
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA.
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Wang X, Li Y, Xiao H, Zhang X, Cao J, Zhang D, Zhang J, Li X, Shen B, Wang Q, Shi Y. Co-culture of spleen stromal cells with bone marrow mononuclear cells leads to the generation of a novel macrophage subset. Scand J Immunol 2014; 79:27-36. [PMID: 24313872 DOI: 10.1111/sji.12133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 10/20/2013] [Indexed: 11/27/2022]
Abstract
Macrophages adopt diverse activation states depending on the microenvironment. Recently, stromal cells have been demonstrated to be organizers of the microenvironment. Here, using splenic stromal cells to mimic the splenic microenvironment in vivo, we show that spleen stromal cells can programme bone marrow-derived mononuclear cells to differentiate and polarize into a novel macrophage subset. These differentiated macrophages (Diff-Mφ) exhibited pronounced production of IL-10, IL-6 and TNF-α, but diminished the production of IL-12 in response to LPS. The generation of Diff-Mφ depended on cell-cell contact as well as on soluble factors. Diff-Mφ directly suppressed the antigen-non-specific (CD3/CD28) CD4(+) T cell proliferative response and induced cell death of activated CD4(+) T cells. As for cytokine production in CD4(+) T cells, Diff-Mφ promoted IL-10 and IL-17 production, whereas inhibited IL-4 production and did not alter IFN-γ production. Besides, Diff-Mφ also expressed iNOS, CD16/CD32, CD54, CD43, CCR7, CD44, PD-L1 and FasL, which might be involved in the function of Diff-Mφ. These results suggest that splenic microenvironment may physiologically induce a novel type of macrophages differentiation.
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Affiliation(s)
- X Wang
- Research Center of Molecular Biology, School of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China; Department of Molecular Immunology, Institute of Basic Medical Sciences, Beijing, China
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Rodríguez M, Domingo E, Municio C, Alvarez Y, Hugo E, Fernández N, Sánchez Crespo M. Polarization of the innate immune response by prostaglandin E2: a puzzle of receptors and signals. Mol Pharmacol 2013; 85:187-97. [PMID: 24170779 DOI: 10.1124/mol.113.089573] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Eicosanoids tailor the innate immune response by supporting local inflammation and exhibiting immunomodulatory properties. Prostaglandin (PG) E2 is the most abundant eicosanoid in the inflammatory milieu due to the robust production elicited by pathogen-associated molecular patterns on cells of the innate immune system. The different functions and cell distribution of E prostanoid receptors explain the difficulty encountered thus far to delineate the actual role of PGE2 in the immune response. The biosynthesis of eicosanoids includes as the first step the Ca(2+)- and kinase-dependent activation of the cytosolic phospholipase A2, which releases arachidonic acid from membrane phospholipids, and later events depending on the transcriptional regulation of the enzymes of the cyclooxygenase routes, where PGE2 is the most relevant product. Acting in an autocrine/paracrine manner in macrophages, PGE2 induces a regulatory phenotype including the expression of interleukin (IL)-10, sphingosine kinase 1, and the tumor necrosis factor family molecule LIGHT. PGE2 also stabilizes the suppressive function of myeloid-derived suppressor cells, inhibits the release of IL-12 p70 by macrophages and dendritic cells, and may enhance the production of IL-23. PGE2 is a central component of the inflammasome-dependent induction of the eicosanoid storm that leads to massive loss of intravascular fluid, increases the mortality rate associated with coinfection by Candida ssp. and bacteria, and inhibits fungal phagocytosis. These effects have important consequences for the outcome of infections and the polarization of the immune response into the T helper cell types 2 and 17 and can be a clue to develop pharmacological tools to address infectious, autoimmune, and autoinflammatory diseases.
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Affiliation(s)
- Mario Rodríguez
- Department of Biochemistry and Molecular Biology, University of Valladolid, Valladolid, Spain (M.R., N.F.); and Institute of Biology and Molecular Genetics, Spanish National Research Council, Valladolid, Spain (E.D., C.M., Y.A., E.H., M.S.C.)
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Critical role for peripherally-derived interleukin-10 in mediating the thermoregulatory manifestations of fever and hypothermia in severe forms of lipopolysaccharide-induced inflammation. Pflugers Arch 2013; 466:1451-66. [DOI: 10.1007/s00424-013-1371-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 09/23/2013] [Indexed: 02/05/2023]
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Damm J, Harden LM, Gerstberger R, Roth J, Rummel C. The putative JAK-STAT inhibitor AG490 exacerbates LPS-fever, reduces sickness behavior, and alters the expression of pro- and anti-inflammatory genes in the rat brain. Neuropharmacology 2013; 71:98-111. [DOI: 10.1016/j.neuropharm.2013.03.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 02/28/2013] [Accepted: 03/18/2013] [Indexed: 11/26/2022]
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The involvement of heme oxygenase 1 but not nitric oxide synthase 2 in a hepatoprotective action of quercetin in lipopolysaccharide-induced hepatotoxicity of D-galactosamine sensitized rats. Fitoterapia 2013; 87:20-6. [PMID: 23537890 DOI: 10.1016/j.fitote.2013.03.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 03/13/2013] [Accepted: 03/15/2013] [Indexed: 12/23/2022]
Abstract
The objective of this study was to evaluate potential hepatoprotective capabilities of quercetin in relation to its modulation of the HO-1 and NOS-2 activities in an experimental model of fulminant liver failure. Liver insult was induced by in vivo administration of D-galactosamine (d-GalN, 400 mg/kg, i.p.) and lipopolysaccharide (LPS, 10 μg/kg, i.p.). The effects of quercetin (50 mg/kg, i.p) on D-GalN toxicity was evaluated by standard biochemical, RT-PCR and Western blot methods. Administration of d-GalN/LPS combination resulted in significantly higher plasma levels of aminotransferases, as well as increased mRNA and protein expressions of both HO-1 and NOS-2 enzymes. Quercetin exhibited cytoprotective effects on the liver, as evidenced by decreased aminotransferase plasma levels. Additionally, quercetin treatment in D-GalN/LPS treated rats significantly increased HO-1 mRNA and its protein expressions. On the contrary, quercetin did not exhibit any significant effects on the levels of nitrites, and NOS-2 mRNA and protein expressions in D-GalN/LPS treated rats. Quercetin when given alone did not have any significant changes on liver enzymes nor HO-1 and NOS-2 mRNA and protein expressions. It can be concluded that the quercetin's induction of HO-1 and its byproducts, without concomitant NOS-2 activity reduction, is among mechanisms contributing to the hepatoprotective effect in D-GalN/LPS hepatotoxicity.
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MSK1 and MSK2 inhibit lipopolysaccharide-induced prostaglandin production via an interleukin-10 feedback loop. Mol Cell Biol 2013; 33:1456-67. [PMID: 23382072 DOI: 10.1128/mcb.01690-12] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Prostaglandin production is catalyzed by cyclooxygenase 2 (cox-2). We demonstrate here that MSK1 and MSK2 (MSK1/2) can exert control on the induction of cox-2 mRNA by Toll-like receptor (TLR) agonists. In the initial phase of cox-2 induction, MSK1/2 knockout macrophages confirmed a role for MSK in the positive regulation of transcription. However, at later time points both lipopolysaccharide (LPS)-induced prostaglandin and cox-2 protein levels were increased in MSK1/2 knockout. Further analysis found that while MSKs promoted cox-2 mRNA transcription, following longer LPS stimulation MSKs also promoted degradation of cox-2 mRNA. This was found to be the result of an interleukin 10 (IL-10) feedback mechanism, with endogenously produced IL-10 promoting cox-2 degradation. The ability of IL-10 to do this was dependent on the mRNA binding protein TTP through a p38/MK2-mediated mechanism. As MSKs regulate IL-10 production in response to LPS, MSK1/2 knockout results in reduced IL-10 secretion and therefore reduced feedback from IL-10 on cox-2 mRNA stability. Following LPS stimulation, this increased mRNA stability correlated to an elevated induction of both of cox-2 protein and prostaglandin secretion in MSK1/2 knockout macrophages relative to that in wild-type cells. This was not restricted to isolated macrophages, as a similar effect of MSK1/2 knockout was seen on plasma prostaglandin E2 (PGE2) levels following intraperitoneal injection of LPS.
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Kubo M, Motomura Y. Transcriptional regulation of the anti-inflammatory cytokine IL-10 in acquired immune cells. Front Immunol 2012; 3:275. [PMID: 22969768 PMCID: PMC3430973 DOI: 10.3389/fimmu.2012.00275] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 08/13/2012] [Indexed: 11/19/2022] Open
Abstract
Although the major role of the immune response is host defense from a wide range of potentially pathogenic microorganisms, excess immune responses can result in severe host damage. The host thus requires anti-inflammatory mechanisms to prevent reactivity to self. Interleukin-10 (IL-10) is a cytokine with broad anti-inflammatory properties involved in the pathogenesis of various diseases. IL-10 was originally described as a T helper (TH2) derived cytokine, but further studies indicated that IL-10 is expressed not only by many cells of the adaptive immune system, including T and B cells, but also by the innate immune cells, including dendritic cells (DCs), macrophages, mast cells, and natural killer (NK) cells. In addition, IL-10 can be induced in TH1 and TH17 cells by chronic inflammation as a system of feedback regulation. In this review, we focus on the molecular mechanisms underlying IL10 gene expression in adaptive immune cells and summarize the recent progresses in epigenetic and transcriptional regulation of the IL10 gene. Understanding the transcriptional regulatory events may help in the development of new strategies to control inflammatory diseases.
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Affiliation(s)
- Masato Kubo
- Division of Molecular Pathology, Research Institute for Biological Sciences, Tokyo University of Science Noda, Japan
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Isaza-Guzmán DM, Teller-Carrero CB, Laberry-Bermúdez MP, González-Pérez LV, Tobón-Arroyave SI. Assessment of clinicopathological characteristics and immunoexpression of COX-2 and IL-10 in oral pyogenic granuloma. Arch Oral Biol 2012; 57:503-12. [DOI: 10.1016/j.archoralbio.2011.11.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 10/05/2011] [Accepted: 11/04/2011] [Indexed: 10/14/2022]
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Yang HJ, Youn H, Seong KM, Yun YJ, Kim W, Kim YH, Lee JY, Kim CS, Jin YW, Youn B. Psoralidin, a dual inhibitor of COX-2 and 5-LOX, regulates ionizing radiation (IR)-induced pulmonary inflammation. Biochem Pharmacol 2011; 82:524-34. [DOI: 10.1016/j.bcp.2011.05.027] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 05/23/2011] [Accepted: 05/24/2011] [Indexed: 11/28/2022]
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Bassaganya-Riera J, DiGuardo M, Viladomiu M, de Horna A, Sanchez S, Einerhand AWC, Sanders L, Hontecillas R. Soluble fibers and resistant starch ameliorate disease activity in interleukin-10-deficient mice with inflammatory bowel disease. J Nutr 2011; 141:1318-25. [PMID: 21562241 DOI: 10.3945/jn.111.139022] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Our goal in this study was to determine the potential for dietary fibers to prevent gut inflammation in IL-10-deficient (IL-10(-/-)) mice. C57BL/6J wild-type (WT) mice (n = 90) and IL-10(-/-) mice (n = 185) were assigned to a control diet or diets supplemented with PROMITOR soluble corn fiber (SCF), STA-LITE III polydextrose (PDX), Biogum (BG), Pullulan (PI-20), PROMITOR resistant starch-75 (RS-75), SCF&BG, RS-75&BG, and inulin (4 g fiber/100 g diet). On d 47, spleen, mesenteric lymph nodes (MLN), duodenum, jejunum, ileum, and colon were macroscopically and histologically evaluated. The spleen and Peyer's patches (PP) were collected for isolating mononuclear cells and measuring the percentages of regulatory T cells (Treg) and cytokines produced by CD4(+) T cells (i.e. IFNγ and IL-10). Dietary supplementation with RS-75, SCF, RS-75&BG, and inulin ameliorated disease activity on d 47. Dietary RS-75 and inulin supplementation decreased ileal and colonic inflammatory lesions. RS-75, SCF, and inulin decreased IFNγ production by effector CD4(+) T cells from PP and RS-75 increased the IL-10-expressing cells in spleen of WT mice. Dietary SCF, PDX, BG, PI-20, and RS-75 upregulated colonic PPARγ expression in WT mice and SCF upregulated Supressor of cytokine signaling 3 in IL-10(-/-) mice. These data suggest that soluble fibers and resistant starch influence Treg cells, IFNγ, and colonic PPARγ expression to suppress gut inflammation.
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Affiliation(s)
- Josep Bassaganya-Riera
- Nutritional Immunology and Molecular Medicine Laboratory, Virginia Bioinformatics Institute, Virginia Tech, Blacksburg, VA 24061, USA.
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Kwon HK, Hwang JS, Lee CG, So JS, Sahoo A, Im CR, Jeon WK, Ko BS, Lee SH, Park ZY, Im SH. Cinnamon extract suppresses experimental colitis through modulation of antigen-presenting cells. World J Gastroenterol 2011; 17:976-86. [PMID: 21451725 PMCID: PMC3057159 DOI: 10.3748/wjg.v17.i8.976] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Revised: 11/25/2010] [Accepted: 12/02/2010] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the anti-inflammatory effects of cinnamon extract and elucidate its mechanisms for targeting the function of antigen presenting cells.
METHODS: Cinnamon extract was used to treat murine macrophage cell line (Raw 264.7), mouse primary antigen-presenting cells (APCs, MHCII+) and CD11c+ dendritic cells to analyze the effects of cinnamon extract on APC function. The mechanisms of action of cinnamon extract on APCs were investigated by analyzing cytokine production, and expression of MHC antigens and co-stimulatory molecules by quantitative real-time PCR and flow cytometry. In addition, the effect of cinnamon extract on antigen presentation capacity and APC-dependent T-cell differentiation were analyzed by [H3]-thymidine incorporation and cytokine analysis, respectively. To confirm the anti-inflammatory effects of cinnamon extract in vivo, cinnamon or PBS was orally administered to mice for 20 d followed by induction of experimental colitis with 2,4,6 trinitrobenzenesulfonic acid. The protective effects of cinnamon extract against experimental colitis were measured by checking clinical symptoms, histological analysis and cytokine expression profiles in inflamed tissue.
RESULTS: Treatment with cinnamon extract inhibited maturation of MHCII+ APCs or CD11c+ dendritic cells (DCs) by suppressing expression of co-stimulatory molecules (B7.1, B7.2, ICOS-L), MHCII and cyclooxygenase (COX)-2. Cinnamon extract induced regulatory DCs (rDCs) that produce low levels of pro-inflammatory cytokines [interleukin (IL)-1β, IL-6, IL-12, interferon (IFN)-γ and tumor necrosis factor (TNF)-α] while expressing high levels of immunoregulatory cytokines (IL-10 and transforming growth factor-β). In addition, rDCs generated by cinnamon extract inhibited APC-dependent T-cell proliferation, and converted CD4+ T cells into IL-10high CD4+ T cells. Furthermore, oral administration of cinnamon extract inhibited development and progression of intestinal colitis by inhibiting expression of COX-2 and pro-inflammatory cytokines (IL-1β, IFN-γ and TNF-α), while enhancing IL-10 levels.
CONCLUSION: Our study suggests the potential of cinnamon extract as an anti-inflammatory agent by targeting the generation of regulatory APCs and IL-10+ regulatory T cells.
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Protection of intestinal occludin tight junction protein by dietary gangliosides in lipopolysaccharide-induced acute inflammation. J Pediatr Gastroenterol Nutr 2010; 50:321-8. [PMID: 20118807 DOI: 10.1097/mpg.0b013e3181ae2ba0] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVES Intestinal permeability and barrier function are regulated by expression of tight junction proteins. Lipopolysaccharide (LPS), tumor necrosis factor-alpha, and interleukin-1beta induce expression of nitric oxide (NO) and reduce the expression of gut tight junction proteins. The purpose of this study was to determine whether dietary gangliosides (GGs) increase the concentration of the anti-inflammatory cytokine interleukin-10 (IL-10) in response to LPS, thereby inhibiting NO production and protecting gut occludin tight junction protein from degradation. MATERIALS AND METHODS Rats were fed semipurified diets with (n = 16) or without (n = 16) GGs (0.1% w/w of total lipid). After 2 weeks of feeding, animals were injected with saline (n = 8/diet group) or LPS (n = 8/diet group) (IP, 3 mg mL(-1) kg(-1)). Intestinal tissue, mucosa, and blood sample were collected 6 hours post-LPS exposure. The effect of dietary GGs on production/expression of IL-10, NO, inducible NO synthase, and occludin protein was determined. RESULTS Dietary GGs increased IL-10 content in intestinal mucosa significantly by 32-fold (P < 0.0001) and in plasma by 2.4-fold (P < 0.001). Feeding animals a ganglioside-enriched diet decreased total NO content in intestinal mucosa and plasma by 44% and 30%, respectively, and inhibited inducible NO synthase expression following LPS exposure compared with control animals. Dietary GGs reduced the degradation of occludin tight junction protein in response to LPS. CONCLUSIONS Dietary GGs inhibit degradation of gut occludin tight junction protein during LPS-induced acute inflammation. Thus, dietary GGs have a role in protecting the integrity of the intestinal barrier during acute gut inflammation.
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Jiao W, Kiang JG, Cary L, Elliott TB, Pellmar TC, Ledney GD. COX-2 inhibitors are contraindicated for treatment of combined injury. Radiat Res 2009; 172:686-97. [PMID: 19929415 DOI: 10.1667/rr1581.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Casualties of radiation dispersal devices, nuclear detonation or major ionizing radiation accidents, in addition to radiation exposure, may sustain physical and/or thermal trauma. Radiation exposure plus additional tissue trauma is known as combined injury. There are no definitive therapeutic agents. Cyclooxygenase-2 (COX-2), an inducible enzyme expressed in pathological disorders and radiation injury, plays an important role in inflammation and the production of cytokines and prostaglandin E(2) (PGE(2)) and could therefore affect the outcome for victims of combined injury. The COX-2 inhibitors celecoxib and meloxicam were evaluated for their therapeutic value against combined injury in mice. In survival studies, the COX-2 inhibitors had no beneficial effect on 30-day survival, wound healing or body weight gain after radiation injury alone or after combined injury. Meloxicam accelerated death in both wounded and combined injury mice. These drugs also induced severe hepatic toxicity, exaggerated inflammatory processes, and did not enhance hematopoietic cell regeneration. This study points to potential contraindications for use of COX-2 inhibitors in patients undergoing therapy for radiation injury and combined injury.
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Affiliation(s)
- W Jiao
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, 8901 Wisconsin Avenue, Bethesda, Maryland 20889-5603, USA
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Feitoza CQ, Semedo P, Gonçalves GM, Cenedeze MA, Pinheiro HS, Dos Santos OFP, Landgraf RG, Pacheco-Silva A, Câmara NOS. Modulation of inflammatory response by selective inhibition of cyclooxygenase-1 and cyclooxygenase-2 in acute kidney injury. Inflamm Res 2009; 59:167-75. [PMID: 19711010 DOI: 10.1007/s00011-009-0083-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 08/07/2009] [Accepted: 08/10/2009] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE AND DESIGN This work explored the role of inhibition of cyclooxygenases (COXs) in modulating the inflammatory response triggered by acute kidney injury. MATERIAL C57Bl/6 mice were used. TREATMENT Animals were treated or not with indomethacin (IMT) prior to injury (days -1 and 0). METHODS Animals were subjected to 45 min of renal pedicle occlusion and sacrificed at 24 h after reperfusion. Serum creatinine and blood urea nitrogen, reactive oxygen species (ROS), kidney myeloperoxidase (MPO) activity, and prostaglandin E2 (PGE(2)) levels were analyzed. Tumor necrosis factor (TNF)-alpha, t-bet, interleukin (IL)-10, IL-1beta, heme oxygenase (HO)-1, and prostaglandin E synthase (PGES) messenger RNA (mRNA) were studied. Cytokines were quantified in serum. RESULTS IMT-treated animals presented better renal function with less acute tubular necrosis and reduced ROS and MPO production. Moreover, the treatment was associated with lower expression of TNF-alpha, PGE(2), PGES, and t-bet and upregulation of HO-1 and IL-10. This profile was mirrored in serum, where inhibition of COXs significantly decreased interferon (IFN)-gamma, TNF-alpha, and IL-12 p70 and upregulated IL-10. CONCLUSIONS COXs seem to play an important role in renal ischemia and reperfusion injury, involving the secretion of pro-inflammatory cytokines, activation of neutrophils, and ROS production. Inhibition of COX pathway is intrinsically involved with cytoprotection.
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Affiliation(s)
- Carla Q Feitoza
- Laboratory of Experimental and Clinical Immunology, Nephrology Division, Federal University of São Paulo, São Paulo, Brazil
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Anstead GM, Zhang Q, Melby PC. Malnutrition promotes prostaglandin over leukotriene production and dysregulates eicosanoid-cytokine crosstalk in activated resident macrophages. Prostaglandins Leukot Essent Fatty Acids 2009; 81:41-51. [PMID: 19541468 DOI: 10.1016/j.plefa.2009.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 12/17/2008] [Accepted: 04/28/2009] [Indexed: 02/02/2023]
Abstract
We previously described a murine model of malnutrition that mimicked features of moderate human malnutrition, and led to increased dissemination of Leishmania donovani. In this study, we investigated the effect of malnutrition on macrophage production of cytokines, prostaglandins (PGs), and leukotrienes (LTs). Using either LPS or calcium ionophore A23187 as a stimulus, macrophages from the malnourished mice produced a 3-fold higher PG/LT ((PGE(2)+6-keto-PGF(1alpha))/(LTB(4)+cysteinyl leukotrienes)) ratio than macrophages from well-nourished mice. LPS-stimulated macrophages from the malnourished mice produced decreased levels of TNF-alpha, GM-CSF, and IL-10, but similar levels of IL-6 and NO compared to well-nourished mice. A complex crosstalk between the eicosanoids and cytokines in the LPS-stimulated macrophages from the malnourished mice was evident by the following: (1) high levels of PG secretion despite low levels of TNF-alpha; (2) supplemental IL-10 modulated the excessive PG production; (3) GM-CSF rectified the PG/LT ratio, but did not correct the abnormal cytokine profile; and (4) inhibitors of cyclooxygenase decreased the PG/LT ratio, but did not affect TNF-alpha. Thus, in this model of malnutrition, there is a relative increase in anti-inflammatory PGs compared to pro-inflammatory LTs, which may contribute to immunodeficiency.
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Affiliation(s)
- G M Anstead
- Research Service, Audie L. Murphy Memorial Veterans Hospital, South Texas Veterans Health Care System, USA.
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Rockwell CE, Raman P, Kaplan BLF, Kaminski NE. A COX-2 metabolite of the endogenous cannabinoid, 2-arachidonyl glycerol, mediates suppression of IL-2 secretion in activated Jurkat T cells. Biochem Pharmacol 2008; 76:353-61. [PMID: 18571623 DOI: 10.1016/j.bcp.2008.05.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 05/01/2008] [Accepted: 05/05/2008] [Indexed: 11/15/2022]
Abstract
Previous studies from this laboratory have demonstrated that a COX-2 metabolite of the endogenous cannabinoid, 2-arachidonyl glycerol (2-AG), inhibits IL-2 secretion in activated T cells through PPARgamma activation independent of the cannabinoid receptors, CB1/CB2. Because numerous cyclooxygenase (COX) products have been shown to activate PPARgamma, the primary purpose of the present studies was to determine the role of COX metabolism in the inhibition of IL-2 secretion by 2-AG. Pretreatment with nonselective and COX-2-specific inhibitors completely abrogated 2-AG-mediated suppression of IL-2 secretion. In contrast, pretreatment with COX-1-specific inhibitors had no effect upon 2-AG-mediated inhibition of IL-2 secretion. Interestingly, the current studies also demonstrate that while the potency of 2-AG is comparable between human Jurkat T cells and murine splenocytes, anandamide (AEA) is markedly more potent in suppressing IL-2 production in Jurkat T cells compared to murine splenocytes. Additionally, the present studies also demonstrate that COX-2 protein is readily detectable in resting Jurkat T cells, which is in contrast to resting murine splenocytes in which COX-2 protein is virtually undetectable. Furthermore, COX-2 protein and mRNA levels are significantly increased over basal levels by 2h following activation of Jurkat cells, whereas increases in COX-2 protein in murine splenocytes are not observed until 4h after cellular activation. These studies suggest that the potency of AEA in the suppression of IL-2 secretion may correlate with COX-2 protein levels in different T cell models. The present studies are also significant in that they demonstrate 2-AG-mediated inhibition of IL-2 secretion is dependent upon COX-2 metabolism.
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Affiliation(s)
- Cheryl E Rockwell
- Department of Pharmacology & Toxicology and the Center for Integrative Toxicology, Michigan State University, East Lansing, MI 48824-1317, USA
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Bergmann C, Strauss L, Zeidler R, Lang S, Whiteside TL. Expansion of human T regulatory type 1 cells in the microenvironment of cyclooxygenase 2 overexpressing head and neck squamous cell carcinoma. Cancer Res 2007; 67:8865-73. [PMID: 17875728 DOI: 10.1158/0008-5472.can-07-0767] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cyclooxygenase 2 (COX-2) overexpression and production of prostaglandin E(2) (PGE(2)) by head and neck squamous cell carcinomas (HNSCC) induce type 1 regulatory T (Tr1) cells and contribute to carcinogenesis by creating a tolerogenic milieu. To test this hypothesis, CD4(+)CD25(-) T cells obtained from the peripheral blood of 10 normal donors were cocultured with autologous dendritic cells, irradiated HNSCC cells and cytokines, interleukin 2 (IL-2), IL-10, and IL-15. HNSCC cells were either COX-2 negative, constitutively expressed COX-2, were transfected with COX-2, or had COX-2 expression knocked down by small interfering RNA. Other modifications included coculture plus or minus the COX-inhibitor, Diclofenac, or synthetic PGE(2) in the absence of HNSCC. Lymphocytes proliferating in 10-day cocultures were phenotyped by flow cytometry, studied for cytokine production by ELISA and for suppressor function in CFSE inhibition assays plus or minus anti-IL-10 or anti-transforming growth factor-beta(1) (TGF-beta(1)) monoclonal antibodies (mAb). COX-2(+) HNSCC or exogenous PGE(2) induced outgrowth of Tr1 cells with the CD3(+)CD4(+)CD25(-)IL2Rbeta(+)IL2Rgamma(+)FoxP3(+)CTLA-4(+)IL-10(+)TGF-beta(1)(+)IL-4(-) phenotype and high suppressor functions (range, 46-68%). Small interfering RNA knockout of COX-2 gene in HNSCC led to outgrowth of lymphocytes with decreased IL2Rgamma (P = 0.0001), FoxP3 (P = 0.05), and IL-10 (P = 0.035) expression and low suppressor activity (range, 26-34%). Whereas COX-2(+) cocultures contained IL-10 and TGF-beta(1) (medians, 615 and 824 pg/mL), cytokine levels were decreased (P < 0.0001) in COX-2(-) cocultures. Inhibition of COX-2 enzymatic activity in HNSCC abrogated outgrowth of Tr1 cells. Neutralizing mAbs to IL-10 and/or TGF-beta(1) abolished Tr1-mediated suppression. COX-2 overexpression in HNSCC plays a major role in the induction of Tr1 cells in the tumor microenvironment.
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Affiliation(s)
- Christoph Bergmann
- University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania, USA
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DiMeo D, Tian J, Zhang J, Narushima S, Berg DJ. Increased interleukin-10 production and Th2 skewing in the absence of 5-lipoxygenase. Immunology 2007; 123:250-62. [PMID: 17894798 PMCID: PMC2433306 DOI: 10.1111/j.1365-2567.2007.02694.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Eicosanoids (prostaglandins and leukotrienes) are important mediators of inflammatory responses. These lipid mediators may also regulate the production of peptide mediators of the immune system. In this study, we investigated the effect of the absence of 5-lipoxygenase (5-LO)-derived leukotrienes on interleukin (IL)-10 production. IL-10 is a key regulator of immune and inflammatory responses, and previous studies have suggested that prostaglandins effect their immunosuppressive functions in part by stimulation of IL-10 production. We therefore investigated whether leukotriene production would have a similar role in regulation of IL-10 production. We have made the striking observation that absence of 5-LO-derived leukotrienes results in increased IL-10 production with a concomitant decrease in the production of pro-inflammatory cytokines, including tumour necrosis factor (TNF)-alpha and IL-12. Moreover, T-cell cytokine production in the absence of 5-LO-derived leukotrienes results in increased IL-4 production and decreased interferon (IFN)-gamma production. This may be in part secondary to increased IL-10 production and its effects on dendritic cell function resulting in altered T-cell differentiation. These findings indicate that, in addition to the central role leukotrienes play in the acute inflammatory response, endogenous leukotrienes are also important regulators of inflammatory cytokine production, via regulation of IL-10 production and in vivo differentiation of T cells.
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Affiliation(s)
- Daniel DiMeo
- Department of Pediatrics, University of Iowa College of Medicine, Iowa City, IA, USA
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Robertson SA, Skinner RJ, Care AS. Essential Role for IL-10 in Resistance to Lipopolysaccharide-Induced Preterm Labor in Mice. THE JOURNAL OF IMMUNOLOGY 2006; 177:4888-96. [PMID: 16982931 DOI: 10.4049/jimmunol.177.7.4888] [Citation(s) in RCA: 154] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
IL-10 is highly expressed in the uterus and placenta and is implicated in controlling inflammation-induced pathologies of pregnancy. To investigate the role of IL-10 in regulating preterm labor, the response of IL-10 null mutant mice to low-dose LPS in late gestation was evaluated. When IL-10 null mutant C57BL/6 (IL-10(-/-)) and control (IL-10(+/+)) mice were administered LPS on day 17 of pregnancy, the dose of LPS required to elicit 50% preterm fetal loss was 10-fold lower in IL-10(-/-) mice than in IL-10(+/+) mice. Surviving fetuses in IL-10(-/-) mice exhibited fetal growth restriction at lower doses of LPS than IL-10(+/+) mice. Marked elevation of LPS-induced immunoactive TNF-alpha and IL-6 was evident in the serum, uterus, and placenta of IL-10(-/-) mice, and TNF-alpha and IL-6 mRNA expression was elevated in the uterus and placenta, but not the fetus. Serum IL-1alpha, IFN-gamma, and IL-12p40 were increased and soluble TNFRII was diminished in the absence of IL-10, with these changes also reflected in the gestational tissues. Administration of rIL-10 to IL-10(-/-) mice attenuated proinflammatory cytokine synthesis and alleviated their increased susceptibility to preterm loss. Exogenous IL-10 also protected IL-10(+/+) mice from fetal loss. These data show that IL-10 modulates resistance to inflammatory stimuli by down-regulating proinflammatory cytokines in the uterus and placenta. Abundance of endogenous IL-10 in gestational tissues is therefore identified as a critical determinant of resistance to preterm labor, and IL-10 may provide a useful therapeutic agent in this common condition.
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Affiliation(s)
- Sarah A Robertson
- Research Centre for Reproductive Health and Department of Obstetrics and Gynecology, University of Adelaide, Adelaide, SA 5005, Australia.
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Moreira V, Zamuner SR, Wallace JL, Teixeira CDFP. Bothrops jararaca and Crotalus durissus terrificus venoms elicit distinct responses regarding to production of prostaglandins E2 and D2, and expression of cyclooxygenases. Toxicon 2006; 49:615-24. [PMID: 17241651 DOI: 10.1016/j.toxicon.2006.09.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2006] [Revised: 09/04/2006] [Accepted: 09/11/2006] [Indexed: 12/31/2022]
Abstract
Prostaglandins (PGs), synthesized by cyclooxygenases, play important roles in many pathophysiological processes including inflammation and hyperalgesia. In this study the profiles of PGE(2) and PGD(2) production secondary to injection of Bothrops jararaca venom (BjV), with inflammatory activity or Crotalus durissus terrificus venom (CdtV), with anti-inflammatory and antinociceptive properties, into mice were evaluated, and the ability of these venoms to induce expression of cyclooxygenases-1 (COX-1) and -2 (COX-2) was investigated. Intraperitoneal injection of BjV but not of CdtV induced the release and PGD(2) at 30 min and of PGE(2) from 3 up to 12 h after injection. Moreover, BjV up-regulated expression of COX-2 but not of the constitutive COX-1, suggesting that expressed COX-2 provides more substrate for synthesis of PGs by the respective terminal synthases, being the critical enzyme for PGs production in the late periods of BjV effect. In contrast, CdtV does not have any effect on constitutive COX-1 and do not induce expression of COX-2. Therefore, differences between BjV and CdtV in the ability to regulate PGs synthesis can account for their distinct effects with regard to inflammation. Moreover, inhibition of COX-2 by selective drugs may be of value to counteract the severe local inflammation induced by BjV in the victims.
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Affiliation(s)
- Vanessa Moreira
- Laboratory of Pharmacology, Butantan Institute, Ave Vital Brazil, 1500, 05503-900 Sao Paulo, Brazil
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Shibata Y, Gabbard J, Yamashita M, Tsuji S, Smith M, Nishiyama A, Henriksen RA, Myrvik QN. Heat‐killed BCG induces biphasic cyclooxygenase 2
+
splenic macrophage formation—role of IL‐10 and bone marrow precursors. J Leukoc Biol 2006; 80:590-8. [PMID: 16822852 DOI: 10.1189/jlb.1205737] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Previous studies have shown that prostaglandin E(2) (PGE(2)) release by splenic F4/80(+) cyclooxygenase (COX)-2(+) macrophages (MØ) isolated from mice, treated with mycobacterial components, plays a major role in the regulation of immune responses. However, splenic MØ, isolated from untreated mice and treated in vitro with lipopolysaccharide and interferon-gamma, express COX-1 and COX-2 within 1 day but release only minimal amounts of PGE(2) following elicitation with calcium ionophore A23187. For further characterization of in vivo requirements for development of PGE(2)-releasing MØ (PGE(2)-MØ), C57Bl/6 [wild-type (WT)], and interleukin (IL)-10-deficient (IL-10(-/-)) mice were treated intraperitoneally with heat-killed Mycobacterium bovis bacillus Calmette-Guerin (HK-BCG). One day following injection, COX-2 was induced in splenic MØ of both mouse strains. However, PGE(2) biosynthesis by these MØ was not increased. Thus, expression of COX-2 is not sufficient to induce PGE(2) production in vivo or in vitro. In sharp contrast, 14 days after HK-BCG treatment, PGE(2) release by COX-2(+) splenic MØ increased as much as sevenfold, and a greater increase was seen in IL-10(-/-) cells than in WT cells. To further determine whether the 14-day splenic PGE(2)-MØ could be derived from bone marrow precursors, we established a chimera in which bone marrow cells were transfused from green fluorescent protein (GFP)-transgenic donors to WT mice. Donors and recipients were treated with HK-BCG simultaneously, and marrow transfusion was performed on Days 1 and 2. On Day 14 after BCG treatment, a significant number of spleen cells coexpressed COX-2 and GFP, indicating that bone marrow-derived COX-2(+) MØ may be responsible for the increased PGE(2) production.
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Affiliation(s)
- Yoshimi Shibata
- Department of Biomedical Sciences, Florida Atlantic University, 777 Glades Rd., P.O. Box 3091, Boca Raton, 33431-0991, USA.
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Chou WY, Lu CN, Lee TH, Wu CL, Hung KS, Concejero AM, Jawan B, Wang CH. Electroporative interleukin-10 gene transfer ameliorates carbon tetrachloride-induced murine liver fibrosis by MMP and TIMP modulation. Acta Pharmacol Sin 2006; 27:469-76. [PMID: 16539848 DOI: 10.1111/j.1745-7254.2006.00304.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
AIM Liver fibrosis represents a process of healing and scarring in response to chronic liver injury. Effective therapies for liver fibrosis are lacking. Interleukin-10 (IL-10) is a cytokine that downregulates pro-inflammatory responses and has a modulatory effect on hepatic fibrogenesis. The aim of this study was to investigate whether electroporative IL-10 gene therapy has a hepatic fibrolytic effect on mice. METHODS Hepatic fibrosis was induced by administering carbon tetrachloride (CCl4) for 10 weeks in mice. The human IL-10 expression plasmid was delivered via electroporation after hepatic fibrosis was established. Histopathology, reverse transcription polymerase chain reaction (RT-PCR), immunoblotting, and gelatin zymography were used to investigate the possible mechanisms of action of IL-10. RESULTS Human IL-10 gene therapy reversed CCl4-induced liver fibrosis in mice. RT-PCR revealed that IL-10 gene therapy attenuated liver TGF-beta1, collagen alpha1, fibronectin, and cell adhesion molecule mRNA upregulation. Following gene transfer, both the activation of alpha-smooth muscle actin and cyclooxygenase-2 were significantly attenuated. Furthermore, IL-10 significantly inhibited matrix metalloproteinase-2 (MMP-2) and tissue inhibitors of matrix metalloproteinase (TIMP) activation after CCl4 intoxication. CONCLUSIONS We demonstrated that IL-10 gene therapy attenuated CCl4-induced liver fibrosis in mice. IL-10 prevented upregulated fibrogenic and pro-inflammatory gene responses. Its collagenolytic effect may be attributed to MMP and TIMP modulation. IL-10 gene therapy may be an effective therapeutic modality against liver fibrosis with potential clinical use.
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Affiliation(s)
- Wen-Ying Chou
- Departments of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital, Taipei, China
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Hanna N, Bonifacio L, Weinberger B, Reddy P, Murphy S, Romero R, Sharma S. Evidence for interleukin-10-mediated inhibition of cyclo- oxygenase-2 expression and prostaglandin production in preterm human placenta. ACTA ACUST UNITED AC 2006; 55:19-27. [PMID: 16364008 DOI: 10.1111/j.1600-0897.2005.00342.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PROBLEM Interleukin-10 (IL-10) is thought to be a key cytokine for the maintenance of pregnancy. Here we examined the expression profiles of IL-10 and cyclo-oxygenase-2 (COX-2), and the effect of IL-10 on COX-2 expression and prostaglandin release in the human placenta from preterm labor deliveries associated with chorioamnionitis. METHOD OF STUDY Placental tissues from preterm labor and term labor deliveries were processed for ex vivo placental explant culture system. IL-10 expression was assessed by enzyme-linked immunosorbent assay (ELISA) and immunohistochemical (IHC) analysis. COX-2 expression was evaluated by IHC, Western blotting and reverse transcriptase-polymerase chain reaction. Prostaglandin E2 (PGE2) release was measured by ELISA. RESULTS IL-10 was significantly reduced in chorioamnionitis-associated preterm labor as well as in term labor placental tissues compared with second trimester normal pregnancy samples obtained from elective terminations. Similar results were obtained with freshly isolated cytotrophoblasts from these deliveries. As expected, COX-2 mRNA was detected at significant levels in tissues from term and preterm labor deliveries compared with no labor term deliveries. Importantly, IL-10 inhibited COX-2 expression in cultured placental explants from preterm labor deliveries, but not from term labor samples. Inhibition of COX-2 expression coincided with reduced PGE2 release. CONCLUSION These results demonstrate the importance of IL-10 in countering inflammation associated with preterm labor, and suggest that term and preterm parturition may, in part, represent different conditions.
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Affiliation(s)
- Nazeeh Hanna
- Department of Pediatrics/Neonatology, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, NJ, USA
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Reynolds AE, Enquist LW. Biological interactions between herpesviruses and cyclooxygenase enzymes. Rev Med Virol 2006; 16:393-403. [PMID: 17006962 DOI: 10.1002/rmv.519] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Decades ago, medical researchers noted that non-steroidal anti-inflammatory drugs (NSAIDs), for example aspirin and indomethacin, modulate primary herpesvirus infections and diminish reactivation of latent herpesvirus infections. NSAIDs inhibit cyclooxygenase (COX) enzymes, molecules necessary for generation of prostaglandins. Numerous studies indicate that herpesvirus infections elicit elevated levels of cyclooxygenase 2 (COX-2) with a resultant increase in prostaglandin E(2) levels (PGE(2)). Thus, the biochemical pathway underlying the anti-herpetic mechanism of NSAIDs is linked to the inhibition of COX. The precise roles of COX-2 and PGE(2) in the viral life cycle are unknown. However, among the alphaherpesvirus, betaherpesvirus and gammaherpesvirus subfamilies, evolutionarily conserved mechanisms ensure modulated expression of COX molecules, underscoring their importance in viral replication and virus-host interactions.
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Affiliation(s)
- Ashley E Reynolds
- Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA
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Sailaja Devi MM, Das UN. Effect of prostaglandins against alloxan-induced diabetes mellitus. Prostaglandins Leukot Essent Fatty Acids 2006; 74:39-60. [PMID: 16297610 DOI: 10.1016/j.plefa.2005.09.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2005] [Accepted: 09/18/2005] [Indexed: 10/25/2022]
Abstract
Previously, we observed that alloxan-induced in vitro cytotoxicity and apoptosis in an insulin secreting rat insulinoma, RIN, cells was prevented by prior exposure to prostaglandin (PG) E(1), PGE(2), PGI(2), PGF(1)(alpha), and PGF(3)(alpha) (P<0.05 compared to alloxan), whereas thromboxane B(2) (TXB(2)) and 6-keto-PGF(1)(alpha) were ineffective. In an extension of these studies, we now report that prior intraperitoneal administration of PGE(1), PGE(2), PGF(1)(alpha), and PGF(3)(alpha) prevented alloxan-induced diabetes mellitus in male Wistar rats, whereas PGI(2), TXB(2), and 6-keto PGF(1)(alpha) were not that effective. PGE(1), PGE(2), PGF(1)(alpha), and PGF(3)(alpha) not only attenuated chemical-induced diabetes mellitus but also restored the antioxidant status to normal range in red blood cells and pancreas. These results suggest that PGE(1), PGE(2), PGF(1)(alpha), and PGF(3)(alpha) can abrogate chemically induced diabetes mellitus in experimental animals and attenuate the oxidant stress that occurs in diabetes mellitus.
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Hung KS, Lee TH, Chou WY, Wu CL, Cho CL, Lu CN, Jawan B, Wang CH. Interleukin-10 gene therapy reverses thioacetamide-induced liver fibrosis in mice. Biochem Biophys Res Commun 2005; 336:324-31. [PMID: 16126171 DOI: 10.1016/j.bbrc.2005.08.085] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2005] [Accepted: 08/11/2005] [Indexed: 12/21/2022]
Abstract
Hepatic fibrosis represents a process of healing and scarring in response to chronic liver injury. Interleukin-10 (IL-10) is a cytokine that downregulates the proinflammatory response and has a modulatory effect on hepatic fibrogenesis. The aim of this study was to investigate whether IL-10 gene therapy possesses anti-hepatic fibrogenesis in mice. Liver fibrosis was induced by long-term thioacetamide administration in mice. Human IL-10 expression plasmid was delivered via electroporation after liver fibrosis established. IL-10 gene therapy reversed hepatic fibrosis and prevented cell apoptosis in a thioacetamide-treated liver. RT-PCR revealed IL-10 gene therapy to reduce liver transforming growth factor-beta1, tumor necrosis factor-alpha, collagen alpha1, cell adhesion molecule, and tissue inhibitors of metalloproteinase mRNA upregulation. Following gene transfer, the activation of alpha-smooth muscle actin and cyclooxygenase-2 was significantly attenuated. In brief, IL-10 gene therapy might be an effective therapeutic reagent for liver fibrosis with potential future clinical applications.
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Affiliation(s)
- Kung-Sheng Hung
- Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
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50
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Mocellin S, Marincola FM, Young HA. Interleukin-10 and the immune response against cancer: a counterpoint. J Leukoc Biol 2005; 78:1043-51. [PMID: 16204623 DOI: 10.1189/jlb.0705358] [Citation(s) in RCA: 281] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Although interleukin-10 (IL-10) is commonly regarded as an anti-inflammatory, immunosuppressive cytokine that favors tumor escape from immune surveillance, a wealth of evidence is accumulating that IL-10 also possesses some immunostimulating properties. In fact, IL-10 has the pleiotropic ability of influencing positively and negatively the function of innate and adaptive immunity in different experimental models, which makes it questionable to merely categorize this cytokine as a target of anti-immune escape therapeutic strategies or rather, as an immunological adjuvant in the fight against cancer. Here, we review available data about the immunostimulating anticancer properties of IL-10, and in particular, we focus on the hypothesis that in contrast to what occurs in secondary lymphoid organs, IL-10 overexpression within the tumor microenvironment may catalyze cancer immune rejection.
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Affiliation(s)
- Simone Mocellin
- Department of Oncological & Surgical Sciences, University of Padova, Italy.
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