101
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Dubashynskaya NV, Bokatyi AN, Skorik YA. Dexamethasone Conjugates: Synthetic Approaches and Medical Prospects. Biomedicines 2021; 9:341. [PMID: 33801776 PMCID: PMC8067246 DOI: 10.3390/biomedicines9040341] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/20/2021] [Accepted: 03/24/2021] [Indexed: 12/12/2022] Open
Abstract
Dexamethasone (DEX) is the most commonly prescribed glucocorticoid (GC) and has a wide spectrum of pharmacological activity. However, steroid drugs like DEX can have severe side effects on non-target organs. One strategy to reduce these side effects is to develop targeted systems with the controlled release by conjugation to polymeric carriers. This review describes the methods available for the synthesis of DEX conjugates (carbodiimide chemistry, solid-phase synthesis, reversible addition fragmentation-chain transfer [RAFT] polymerization, click reactions, and 2-iminothiolane chemistry) and perspectives for their medical application as GC drug or gene delivery systems for anti-tumor therapy. Additionally, the review focuses on the development of DEX conjugates with different physical-chemical properties as successful delivery systems in the target organs such as eye, joint, kidney, and others. Finally, polymer conjugates with improved transfection activity in which DEX is used as a vector for gene delivery in the cell nucleus have been described.
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Affiliation(s)
| | | | - Yury A. Skorik
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr. V.O. 31, 199004 St. Petersburg, Russia; (N.V.D.); (A.N.B.)
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102
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Chang WT, Hong MY, Chen CL, Hwang CY, Tsai CC, Chuang CC. Mutant glucocorticoid receptor binding elements on the interleukin-6 promoter regulate dexamethasone effects. BMC Immunol 2021; 22:24. [PMID: 33771121 PMCID: PMC7995394 DOI: 10.1186/s12865-021-00413-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 03/14/2021] [Indexed: 12/15/2022] Open
Abstract
Background Glucocorticoids (GCs) have been extensively used as essential modulators in clinical infectious and inflammatory diseases. The GC receptor (GR) is a transcription factor belonging to the nuclear receptor family that regulates anti-inflammatory processes and releases pro-inflammatory cytokines, such as interleukin (IL)-6. Results Five putative GR binding sites and other transcriptional factor binding sites were identified on theIL-6 promoter, and dexamethasone (DEX) was noted to reduce the lipopolysaccharide (LPS)-induced IL-6 production. Among mutant transcriptional factor binding sites, nuclear factor-kappa B (NF-κB), activator protein (AP)-1, and specificity protein (Sp)1–2 sites reduced basal and LPS-induced IL-6 promoter activities through various responses. The second GR binding site (GR2) was noted to play a crucial role in both basal and inducible promoter activities in LPS-induced inflammation. Conclusions We concluded that selective GR2 modulator might exert agonistic and antagonistic effects and could activate crucial signaling pathways during the LPS-stimulated inflammatory process. Supplementary Information The online version contains supplementary material available at 10.1186/s12865-021-00413-z.
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Affiliation(s)
- Wen-Teng Chang
- Department of Biological Science and Technology, Chung Hwa University of Medical Technology, Tainan, 701, Taiwan
| | - Ming-Yuan Hong
- Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chien-Liang Chen
- Department of Physical Therapy, I-Shou University, Kaohsiung, Taiwan
| | - Chi-Yuan Hwang
- Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Cheng-Chieh Tsai
- Department of Nursing, Chung Hwa University of Medical Technology, Tainan, 701, Taiwan
| | - Chia-Chang Chuang
- Department of Emergency Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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103
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Fredslund SO, Buus NH, Højgaard Skjold C, Laugesen E, Jensen AB, Laursen BE. Changes in vascular function during breast cancer treatment. Br J Clin Pharmacol 2021; 87:4230-4240. [PMID: 33769580 DOI: 10.1111/bcp.14837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 03/03/2021] [Accepted: 03/10/2021] [Indexed: 12/16/2022] Open
Affiliation(s)
| | - Niels Henrik Buus
- Department of Biomedicine, Wilhelm Meyers Allé 3, Aarhus University, Aarhus C, Denmark.,Department of Renal Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | | | - Esben Laugesen
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | | | - Britt Elmedal Laursen
- Department of Oncology, Aarhus University Hospital, Aarhus N, Denmark.,Department of Biomedicine, Wilhelm Meyers Allé 3, Aarhus University, Aarhus C, Denmark.,Department of Molecular Medicine (MOMA), Aarhus University Hospital, Aarhus N, Denmark
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104
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Dexamethasone Creates a Suppressive Microenvironment and Promotes Aspergillus fumigatus Invasion in a Human 3D Epithelial/Immune Respiratory Model. J Fungi (Basel) 2021; 7:jof7030221. [PMID: 33803702 PMCID: PMC8003030 DOI: 10.3390/jof7030221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 11/19/2022] Open
Abstract
Lung immunity and susceptibility to infections is subject to interactions between the epithelial layer and immune cells residing in the pulmonary space. Aspergillus (A.) fumigatus, the most prevalent pathogenic fungus, affects both upper and lower respiratory tracts of immunocompromised hosts. Several reports implicate corticosteroids as a major risk factor due to their anti-inflammatory and immunosuppressive effects, which are exacerbated by long-term treatment regimens. Here we demonstrate for the first time the influence of dexamethasone when it comes to germination and hyphae formation of A. fumigatus in the presence of macrophages within a highly differentiated air–liquid interphase (ALI) epithelial/immune lung model. We illustrate suppressed mucus production within the highly differentiated 3D respiratory model as well as significantly decreased cilia beat frequencies by dexamethasone treatment. This goes along with corticosteroid-mediated macrophage M2 polarization within the epithelial/immune microenvironment. Therefore, we here showed that corticosteroids promote enhanced fungal growth and invasion A. fumigatus by creating a suppressive environment affecting both epithelial as well as immune cells.
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105
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Rowe SE, Beam JE, Conlon BP. Recalcitrant Staphylococcus aureus Infections: Obstacles and Solutions. Infect Immun 2021; 89:e00694-20. [PMID: 33526569 PMCID: PMC8090968 DOI: 10.1128/iai.00694-20] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Antibiotic treatment failure of Staphylococcus aureus infections is very common. In addition to genetically encoded mechanisms of antibiotic resistance, numerous additional factors limit the efficacy of antibiotics in vivo Identifying and removing the barriers to antibiotic efficacy are of major importance, as even if new antibiotics become available, they will likely face the same barriers to efficacy as their predecessors. One major obstacle to antibiotic efficacy is the proficiency of S. aureus to enter a physiological state that is incompatible with antibiotic killing. Multiple pathways leading to antibiotic tolerance and the formation of tolerant subpopulations called persister cells have been described for S. aureus Additionally, S. aureus is a versatile pathogen that can infect numerous tissues and invade a variety of cell types, of which some are poorly penetrable to antibiotics. It is therefore unlikely that there will be a single solution to the problem of recalcitrant S. aureus infection. Instead, specific approaches may be required for targeting tolerant cells within different niches, be it through direct targeting of persister cells, sensitization of persisters to conventional antibiotics, improved penetration of antibiotics to particular niches, or any combination thereof. Here, we examine two well-described reservoirs of antibiotic-tolerant S. aureus, the biofilm and the macrophage, the barriers these environments present to antibiotic efficacy, and potential solutions to the problem.
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Affiliation(s)
- Sarah E Rowe
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jenna E Beam
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Brian P Conlon
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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106
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Awasthi S, Wagner T, Venkatakrishnan AJ, Puranik A, Hurchik M, Agarwal V, Conrad I, Kirkup C, Arunachalam R, O'Horo J, Kremers W, Kashyap R, Morice W, Halamka J, Williams AW, Faubion WA, Badley AD, Gores GJ, Soundararajan V. Plasma IL-6 levels following corticosteroid therapy as an indicator of ICU length of stay in critically ill COVID-19 patients. Cell Death Discov 2021; 7:55. [PMID: 33723251 PMCID: PMC7958587 DOI: 10.1038/s41420-021-00429-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 11/14/2020] [Accepted: 12/04/2020] [Indexed: 12/13/2022] Open
Abstract
Intensive care unit (ICU) admissions and mortality in severe COVID-19 patients are driven by "cytokine storms" and acute respiratory distress syndrome (ARDS). Interim clinical trial results suggest that the corticosteroid dexamethasone displays better 28-day survival in severe COVID-19 patients requiring ventilation or oxygen. In this study, 10 out of 16 patients (62.5%) that had an average plasma IL-6 value over 10 pg/mL post administration of corticosteroids also had worse outcomes (i.e., ICU stay >15 days or death), compared to 8 out of 41 patients (19.5%) who did not receive corticosteroids (p-value = 0.0024). Given this potential association between post-corticosteroid IL-6 levels and COVID-19 severity, we hypothesized that the glucocorticoid receptor (GR or NR3C1) may be coupled to IL-6 expression in specific cell types that govern cytokine release syndrome (CRS). Examining single-cell RNA-seq data from BALF of severe COVID-19 patients and nearly 2 million cells from a pan-tissue scan shows that alveolar macrophages, smooth muscle cells, and endothelial cells co-express NR3C1 and IL-6, motivating future studies on the links between the regulation of NR3C1 function and IL-6 levels.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - William Morice
- Mayo Clinic, Rochester, MN, 55905, USA
- Mayo Clinic Laboratories, Rochester, MN, 55905, USA
| | - John Halamka
- Mayo Clinic, Rochester, MN, 55905, USA
- Mayo Clinic Platform, Rochester, MN, 55905, USA
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107
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Wepler M, Preuss JM, Merz T, McCook O, Radermacher P, Tuckermann JP, Vettorazzi S. Impact of downstream effects of glucocorticoid receptor dysfunction on organ function in critical illness-associated systemic inflammation. Intensive Care Med Exp 2020; 8:37. [PMID: 33336296 PMCID: PMC7746781 DOI: 10.1186/s40635-020-00325-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 12/20/2022] Open
Abstract
Glucocorticoids (GCs) are stress hormones that regulate developmental and physiological processes and are among the most potent anti-inflammatory drugs to suppress chronic and acute inflammation. GCs act through the glucocorticoid receptor (GR), a ubiquitously expressed ligand-activated transcription factor, which translocates into the nucleus and can act via two different modes, as a GR monomer or as a GR dimer. These two modes of action are not clearly differentiated in practice and may lead to completely different therapeutic outcomes. Detailed aspects of GR mechanisms are often not taken into account when GCs are used in different clinical scenarios. Patients, with critical illness-related corticosteroid insufficiency, treated with natural or synthetic GCs are still missing a clearly defined therapeutic strategy. This review discusses the different modes of GR function and its importance on organ function in vivo.
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Affiliation(s)
- Martin Wepler
- Institute for Anesthesiological Pathophysiology and Process Engineering, University Hospital Ulm, Ulm, Germany. .,Department of Anesthesia, University Hospital Ulm, Ulm, Germany.
| | - Jonathan M Preuss
- Institute of Comparative Molecular Endocrinology (CME), Ulm University, Ulm, Germany
| | - Tamara Merz
- Institute for Anesthesiological Pathophysiology and Process Engineering, University Hospital Ulm, Ulm, Germany
| | - Oscar McCook
- Institute for Anesthesiological Pathophysiology and Process Engineering, University Hospital Ulm, Ulm, Germany
| | - Peter Radermacher
- Institute for Anesthesiological Pathophysiology and Process Engineering, University Hospital Ulm, Ulm, Germany
| | - Jan P Tuckermann
- Institute of Comparative Molecular Endocrinology (CME), Ulm University, Ulm, Germany
| | - Sabine Vettorazzi
- Institute of Comparative Molecular Endocrinology (CME), Ulm University, Ulm, Germany
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108
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Murray KO, Brant JO, Iwaniec JD, Sheikh LH, de Carvalho L, Garcia CK, Robinson GP, Alzahrani JM, Riva A, Laitano O, Kladde MP, Clanton TL. Exertional heat stroke leads to concurrent long-term epigenetic memory, immunosuppression and altered heat shock response in female mice. J Physiol 2020; 599:119-141. [PMID: 33037634 DOI: 10.1113/jp280518] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/07/2020] [Indexed: 12/21/2022] Open
Abstract
KEY POINTS Exposure to exertional heat stroke (EHS) has been linked to increased long-term decrements of health. Epigenetic reprogramming is involved in the response to heat acclimation; however, whether the long-term effects of EHS are mediated by epigenetic reprogramming is unknown. In female mice, we observed DNA methylation reprogramming in bone marrow-derived (BMD) monocytes as early as 4 days of recovery from EHS and as late as 30 days compared with sham exercise controls. Whole blood, collected after 30 days of recovery from EHS, exhibited an immunosuppressive phenotype when challenged in vitro by lipopolysaccharide. After 30 days of recovery from EHS, BMD monocytes exhibited an altered in vitro heat shock response. The location of differentially methylated CpGs are predictive of both the immunosuppressive phenotype and altered heat shock responses. ABSTRACT Exposure to exertional heat stroke (EHS) has been linked to increased susceptibility to a second heat stroke, infection and cardiovascular disease. Whether these clinical outcomes are mediated by an epigenetic memory is unknown. Using a preclinical mouse model of EHS, we investigated whether EHS exposure produces a lasting epigenetic memory in monocytes and whether there are phenotypic alterations that may be consistent with these epigenetic changes. Female mice underwent forced wheel running at 37.5°C/40% relative humidity until symptom limitation, characterized by CNS dysfunction. Results were compared with matched exercise controls at 22.5°C. Monocytes were isolated from bone marrow after 4 or 30 days of recovery to extract DNA and analyse methylation. Broad-ranging alterations to the DNA methylome were observed at both time points. At 30 days, very specific alterations were observed to the promoter regions of genes involved with immune responsiveness. To test whether these changes might be related to phenotype, whole blood at 30 days was challenged with lipopolysaccharide (LPS) to measure cytokine secretion; monocytes were also challenged with heat shock to quantify mRNA expression. Whole blood collected from EHS mice showed markedly attenuated inflammatory responses to LPS challenge. Furthermore, monocyte mRNA from EHS mice showed significantly altered responses to heat shock challenge. These results demonstrate that EHS leads to a unique DNA methylation pattern in monocytes and altered immune and heat shock responsiveness after 30 days. These data support the hypothesis that EHS exposure can induce long-term physiological changes that may be linked to altered epigenetic profiles.
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Affiliation(s)
- Kevin O Murray
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Jason O Brant
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - John D Iwaniec
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Laila H Sheikh
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Lucas de Carvalho
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Christian K Garcia
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Gerard P Robinson
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Jamal M Alzahrani
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Alberto Riva
- Bioinformatics Core, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL, USA
| | - Orlando Laitano
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
| | - Michael P Kladde
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL, USA
| | - Thomas L Clanton
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, FL, USA
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109
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Wang B, Kasper M, Laffer B, Meyer zu Hörste G, Wasmuth S, Busch M, Jalilvand TV, Thanos S, Heiligenhaus A, Bauer D, Heinz C. Increased Hydrostatic Pressure Promotes Primary M1 Reaction and Secondary M2 Polarization in Macrophages. Front Immunol 2020; 11:573955. [PMID: 33154752 PMCID: PMC7591771 DOI: 10.3389/fimmu.2020.573955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/26/2020] [Indexed: 12/30/2022] Open
Abstract
Patients with chronic anterior uveitis are at particularly high risk of developing secondary glaucoma when corticosteroids [e.g., dexamethasone (Dex)] are used or when inflammatory activity has regressed. Macrophage migration into the eye increases when secondary glaucoma develops and may play an important role in the development of secondary glaucoma. Our aim was to evaluate in vitro if increased hydrostatic pressure and corticosteroids could induce changes in macrophages phenotype. By using a pressure chamber cell culture system, we assessed the effect of increased hydrostatic pressure (HP), inflammation, and immunosuppression (Dex) on the M1/M2 phenotype of macrophages. Bone marrow-derived macrophages (BMDMs) were stimulated with medium, lipopolysaccharide (LPS, 100 ng/ml), Dex (200 ng/ml), or LPS + Dex and incubated with different HP (0, 20, or 60 mmHg) for 2 or 7 days. The numbers of CD86+/CD206- (M1 phenotype), CD86-/CD206+ (M2 phenotype), CD86+/CD206+ (intermediate phenotype), F4/80+/TNF-α+, and F4/80+/IL-10+ macrophages were determined by flow cytometry. TNF-α and IL-10 levels in cell culture supernatants were quantified by ELISA. TNF-α, IL-10, fibronectin, and collagen IV expression in BMDMs were detected by immunofluorescence microscopy. Higher HP polarizes macrophages primarily to an M1 phenotype (LPS, 60 vs. 0 mmHg, d2: p = 0.0034) with less extra cellular matrix (ECM) production and secondary to an M2 phenotype (medium, 60 vs. 0 mmHg, d7: p = 0.0089) (medium, 60 vs. 20 mmHg, d7: p = 0.0433) with enhanced ECM production. Dex induces an M2 phenotype (Dex, medium vs. Dex, d2: p < 0.0001; d7: p < 0.0001) with more ECM production. Higher HP further increased M2 polarization of Dex-treated macrophages (Dex, 60 vs. 0 mmHg, d2: p = 0.0417; d7: p = 0.0454). These changes in the M1/M2 phenotype by high HP or Dex treatment may play a role in the pathogenesis of secondary uveitic glaucoma- or glucocorticoid (GC)-induced glaucoma.
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Affiliation(s)
- Bo Wang
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
| | - Maren Kasper
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
| | - Björn Laffer
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
| | - Gerd Meyer zu Hörste
- Institution of Neurology and Institution for Translational Neurology, Universitätsklinikum Münster, Münster, Germany
| | - Susanne Wasmuth
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
| | - Martin Busch
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
| | | | - Solon Thanos
- Institution of Experimental Ophthalmology, Westfälische Wilhelms-Universität, Münster, Germany
| | - Arnd Heiligenhaus
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
- Ophthalmology, University of Duisburg-Essen, Essen, Germany
| | - Dirk Bauer
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
| | - Carsten Heinz
- Ophthalmology and Ophtha-Lab at St. Franziskus Hospital, Münster, Germany
- Ophthalmology, University of Duisburg-Essen, Essen, Germany
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Conticini E, Franchi F, Bennett D, Valente S, Mazzei MA, Bargagli E, Volterrani L, Scolletta S, Frediani B. High dosage of methylprednisolone as a rescue, second-line treatment in COVID-19 patients who failed to respond to tocilizumab. Ann Rheum Dis 2020; 81:e202. [PMID: 32816701 DOI: 10.1136/annrheumdis-2020-218761] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 08/02/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Edoardo Conticini
- Rheumatology Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Federico Franchi
- Anesthesia and Intensive Care Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - David Bennett
- Respiratory Disease and Lung Transplant Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Serafina Valente
- Cardiology Unit, Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Maria A Mazzei
- Diagnostic Imaging Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Elena Bargagli
- Respiratory Disease and Lung Transplant Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Luca Volterrani
- Diagnostic Imaging Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Sabino Scolletta
- Anesthesia and Intensive Care Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Bruno Frediani
- Rheumatology Unit, Department of Medical Sciences, Surgery and Neuroscience, University of Siena, Siena, Italy
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111
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Effects of corticosteroids on COPD lung macrophage phenotype and function. Clin Sci (Lond) 2020; 134:751-763. [PMID: 32227160 DOI: 10.1042/cs20191202] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/17/2020] [Accepted: 03/30/2020] [Indexed: 02/06/2023]
Abstract
The numbers of macrophages are increased in the lungs of chronic obstructive pulmonary disease (COPD) patients. COPD lung macrophages have reduced ability to phagocytose microbes and efferocytose apoptotic cells. Inhaled corticosteroids (ICSs) are widely used anti-inflammatory drugs in COPD; however, their role beyond suppression of cytokine release has not been explored in COPD macrophages. We have examined the effects of corticosteroids on COPD lung macrophage phenotype and function. Lung macrophages from controls and COPD patients were treated with corticosteroids; effects on gene and protein expression of CD163, CD164, CD206, MERTK, CD64, CD80 and CD86 were studied. We also examined the effect of corticosteroids on the function of CD163, MERTK and cluster of differentiation 64 (CD64). Corticosteroid increased CD163, CD164, CD206 and MERTK expression and reduced CD64, CD80 and CD86 expression. We also observed an increase in the uptake of the haemoglobin-haptoglobin complex (CD163) from 59 up to 81% and an increase in efferocytosis of apoptotic neutrophils (MERTK) from 15 up to 28% following corticosteroid treatment. We observed no effect on bacterial phagocytosis. Corticosteroids alter the phenotype and function of COPD lung macrophages. Our findings suggest mechanisms by which corticosteroids exert therapeutic benefit in COPD, reducing iron available for bacterial growth and enhancing efferocytosis.
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112
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Zou R, Gui X, Zhang J, Tian Y, Liu X, Tian M, Chen T, Wu H, Chen J, Dai J, Cai H. Association of serum macrophage-mannose receptor CD206 with mortality in idiopathic pulmonary fibrosis. Int Immunopharmacol 2020; 86:106732. [PMID: 32622200 DOI: 10.1016/j.intimp.2020.106732] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 06/15/2020] [Accepted: 06/20/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Acute exacerbation of idiopathic pulmonary fibrosis (AE-IPF) is attracting considerable attention due to disease acceleration and substantial mortality. Macrophages are known to regulate the fibrotic process in idiopathic pulmonary fibrosis. OBJECTIVE We investigated if two new macrophage-specific serum biomarkers, soluble mannose receptor (MR, sCD206) and soluble CD163 (sCD163), increased in serum obtained from patients with AE-IPF compared to stable IPF (S-IPF). METHODS A total of 36 IPF patients with AE status, 54 IPF patients with stable status, and 27 normal controls were enrolled in this study. The levels of serum sCD206 and sCD163 were compared among the three groups and analysed with the clinical features and mortality of IPF. RESULTS The serum concentrations of both markers were higher in patients with AE-IPF than in those with S-IPF (580.0 ng/ml vs 335 ng/ml for sCD206 and 69.2 ng/ml vs 37.9 ng/ml for sCD163). The level of sCD206 was related to an increased risk of mortality (HR = 1.002, p < 0.001). The best separation between decedents and survivors was obtained by sCD206 (area under the receiver operating characteristic curve [AUC] 0.712 and 95% confidence interval 0.595-0.830). CONCLUSION Our data demonstrated that the macrophage-related markers sCD206 and sCD163 were significantly higher in patients with IPF, especially sCD206 in AE-IPF patients. The high level of serum sCD206 was associated with mortality in idiopathic pulmonary fibrosis.
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Affiliation(s)
- Ruyi Zou
- Department of Respiratory Medicine, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China
| | - Xianhua Gui
- Department of Respiratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China
| | - Ji Zhang
- Jiangsu Key Laboratory of Organ Transplantation, Wuxi People's Hospital, Nanjing Medical University, No. 299 Qingyang Road, Wuxi 214023, Jiangsu, People's Republic of China
| | - Yaqiong Tian
- Department of Respiratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China
| | - Xiaoqin Liu
- Department of Respiratory Medicine, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China
| | - Mi Tian
- Department of Respiratory Medicine, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China
| | - Tingting Chen
- Department of Pathology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China
| | - Hongyan Wu
- Department of Pathology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China
| | - Jingyu Chen
- Jiangsu Key Laboratory of Organ Transplantation, Wuxi People's Hospital, Nanjing Medical University, No. 299 Qingyang Road, Wuxi 214023, Jiangsu, People's Republic of China.
| | - Jinghong Dai
- Department of Respiratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China.
| | - Hourong Cai
- Department of Respiratory Medicine, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China; Department of Respiratory Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing 210008, Jiangsu, People's Republic of China.
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113
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Abstract
Autoinflammatory syndromes are characterized by an exaggerated activation of the innate immune system and frequently present with skin symptoms. In contrast to autoimmune disorders no specific autoantibodies or autoreactive immune cells are detected. Thus, the diagnosis is usually difficult and can only be made by a careful interpretation of anamnestic, clinical and laboratory parameters. In some hereditary autoimmune syndromes specific genetic mutations are described and can be helpful for the diagnosis. For treatment of these disorders both classic immunomodulatory drugs and specific cytokine inhibitors are used, mainly directed against interleukin‑1. Long-term therapy is generally required.
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114
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Später T, Menger MM, Nickels RM, Menger MD, Laschke MW. Macrophages promote network formation and maturation of transplanted adipose tissue-derived microvascular fragments. J Tissue Eng 2020; 11:2041731420911816. [PMID: 32313616 PMCID: PMC7153185 DOI: 10.1177/2041731420911816] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 02/18/2020] [Indexed: 12/12/2022] Open
Abstract
Adipose tissue–derived microvascular fragments rapidly reassemble into microvascular networks within implanted scaffolds. Herein, we analyzed the contribution of macrophages to this process. C57BL/6 mice received clodronate (clo)-containing liposomes for macrophage depletion, whereas animals treated with phosphate-buffered-saline-containing liposomes served as controls. Microvascular fragments were isolated from clo- and phosphate-buffered-saline-treated donor mice and seeded onto collagen–glycosaminoglycan matrices, which were implanted into dorsal skinfold chambers of clo- and phosphate-buffered-saline-treated recipient mice. The implants’ vascularization and incorporation were analyzed by stereomicroscopy, intravital fluorescence microscopy, histology, and immunohistochemistry. Compared to controls, matrices within clo-treated animals exhibited a significantly reduced functional microvessel density. Moreover, they contained a lower fraction of microvessels with an α-smooth muscle actin (SMA)+ cell layer, indicating impaired vessel maturation. This was associated with a deteriorated implant incorporation. These findings demonstrate that macrophages not only promote the reassembly of microvascular fragments into microvascular networks, but also improve their maturation during this process.
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Affiliation(s)
- Thomas Später
- Institute for Clinical & Experimental Surgery, Saarland University, Homburg, Germany
| | - Maximilian M Menger
- Institute for Clinical & Experimental Surgery, Saarland University, Homburg, Germany.,Department of Trauma, Hand and Reconstructive Surgery, Saarland University, Homburg, Germany
| | - Ruth M Nickels
- Institute for Clinical & Experimental Surgery, Saarland University, Homburg, Germany
| | - Michael D Menger
- Institute for Clinical & Experimental Surgery, Saarland University, Homburg, Germany
| | - Matthias W Laschke
- Institute for Clinical & Experimental Surgery, Saarland University, Homburg, Germany
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115
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Münck NA, Roth J, Sunderkötter C, Ehrchen J. Aryl Hydrocarbon Receptor-Signaling Regulates Early Leishmania major-Induced Cytokine Expression. Front Immunol 2019; 10:2442. [PMID: 31749794 PMCID: PMC6843081 DOI: 10.3389/fimmu.2019.02442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 10/01/2019] [Indexed: 02/05/2023] Open
Abstract
The early inflammatory skin micromilieu affects resistance in experimental infection with Leishmania major. We pursue the concept that macrophages, which take up parasites during early infection, exert decisive influence on the inflammatory micromilieu after infection. In order to analyze their distinctive potential, we identified differentially regulated genes of murine granuloma macrophages (GMΦ) from resistant and susceptible mice after their infection with metacyclic Leishmania major. We found induction of several cytokines in GMΦ from both strains and a stronger upregulation of the transcription factor aryl hydrocarbon receptor (AhR) in GMΦ from resistant mice. Using both an AhR agonist and antagonist we demonstrated that AhR is involved in Leishmania-induced production of TNF in macrophages. In vivo, single local injection of an AhR agonist in early lesions of susceptible mice caused an increased induction of Tnf and other cytokines in the skin. Importantly, local agonist treatment led to a reduction of disease severity, reduced parasite loads and a weaker Th2 response. Our results demonstrate that local activation of AhR has a beneficial effect in experimental leishmaniasis.
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Affiliation(s)
- Niels-Arne Münck
- Institute of Immunology, University of Münster, Münster, Germany.,Department of Translational Dermatoinfectiology, University of Münster, Münster, Germany
| | - Johannes Roth
- Institute of Immunology, University of Münster, Münster, Germany
| | - Cord Sunderkötter
- Department of Translational Dermatoinfectiology, University of Münster, Münster, Germany.,Department of Dermatology, University of Münster, Münster, Germany.,Department of Dermatology and Venereology, Martin Luther University of Halle-Wittenberg, Halle, Germany
| | - Jan Ehrchen
- Department of Dermatology, University of Münster, Münster, Germany
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