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Horn KJ, Fulte S, Yang M, Lorenz BP, Clark SE. Neutrophil responsiveness to IL-10 impairs clearance of Streptococcus pneumoniae from the lungs. J Leukoc Biol 2024; 115:4-15. [PMID: 37381945 PMCID: PMC10768920 DOI: 10.1093/jleuko/qiad070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/25/2023] [Accepted: 06/20/2023] [Indexed: 06/30/2023] Open
Abstract
The early immune response to bacterial pneumonia requires a careful balance between pathogen clearance and tissue damage. The anti-inflammatory cytokine interleukin (IL)-10 is critical for restraining otherwise lethal pulmonary inflammation. However, pathogen-induced IL-10 is associated with bacterial persistence in the lungs. In this study, we used mice with myeloid cell specific deletion of IL-10R to investigate the cellular targets of IL-10 immune suppression during infection with Streptococcus pneumoniae, the most common bacterial cause of pneumonia. Our findings suggest that IL-10 restricts the neutrophil response to S. pneumoniae, as neutrophil recruitment to the lungs was elevated in myeloid IL-10 receptor (IL-10R)-deficient mice and neutrophils in the lungs of these mice were more effective at killing S. pneumoniae. Improved killing of S. pneumoniae was associated with increased production of reactive oxygen species and serine protease activity in IL-10R-deficient neutrophils. Similarly, IL-10 suppressed the ability of human neutrophils to kill S. pneumoniae. Burdens of S. pneumoniae were lower in myeloid IL-10R-deficient mice compared with wild-type mice, and adoptive transfer of IL-10R-deficient neutrophils into wild-type mice significantly improved pathogen clearance. Despite the potential for neutrophils to contribute to tissue damage, lung pathology scores were similar between genotypes. This contrasts with total IL-10 deficiency, which is associated with increased immunopathology during S. pneumoniae infection. Together, these findings identify neutrophils as a critical target of S. pneumoniae-induced immune suppression and highlight myeloid IL-10R abrogation as a mechanism to selectively reduce pathogen burdens without exacerbating pulmonary damage.
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Affiliation(s)
- Kadi J Horn
- Department of Otolaryngology, University of Colorado School of Medicine, 12700 East 19th Avenue, Aurora, CO 80045, United States
| | - Sam Fulte
- Department of Otolaryngology, University of Colorado School of Medicine, 12700 East 19th Avenue, Aurora, CO 80045, United States
| | - Michael Yang
- Department of Pathology, University of Colorado School of Medicine, 12631 East 17th Avenue, Aurora, CO80045, United States
| | - Brian P Lorenz
- Department of Otolaryngology, University of Colorado School of Medicine, 12700 East 19th Avenue, Aurora, CO 80045, United States
| | - Sarah E Clark
- Department of Otolaryngology, University of Colorado School of Medicine, 12700 East 19th Avenue, Aurora, CO 80045, United States
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2
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Chmielecki A, Bortnik K, Galczynski S, Kopacz K, Padula G, Jerczynska H, Stawski R, Nowak D. Interleukin-4 during post-exercise recovery negatively correlates with the production of phagocyte-generated oxidants. Front Physiol 2023; 14:1186296. [PMID: 38192745 PMCID: PMC10773862 DOI: 10.3389/fphys.2023.1186296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 11/02/2023] [Indexed: 01/10/2024] Open
Abstract
Exhaustive run induced a biphasic oxidative response of circulating phagocytes in 16 amateur sportsmen. The first phase involved an increment just after exercise of enhanced whole blood chemiluminescence normalized per phagocyte count, whereas in the second phase a decrement from 1 h post-exercise and ongoing till 24 h. We tested whether plasma Interleukin IL-4, IL-8, IL-10 and Tumor Necrosis Factor α concentrations change in response to exhaustive run and whether there are associations between their levels and delta resting. Moreover, IL-8 and IL-10 significantly increased immediately post-exercise and after 1 h, but later normalized. Tumor necrosis factor α rose by 1.1-times only just after exercise. However, none of these cytokines showed any correlation with the investigated chemiluminescence. Exercise did not alter plasma concentrations of IL-4. However, pre-exercise IL-4 negatively correlated with measured luminescence just after exercise (ρ = -0.54, p < 0.05), and also tended to be negatively associated with decrements of the second phase at 1 h post-exercise ρ = -0.45, p = 0.08. It is suggested that plasma IL-4, by a negative association with blood phagocytes oxidants production, could be involved in the maintenance of proper balance between oxidants and anti-oxidants during strenuous exercise and post-exercise recovery.
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Affiliation(s)
| | | | - Szymon Galczynski
- Academic Laboratory of Movement and Human Physical Performance “DynamoLab”, Medical University of Lodz, Łódź, Poland
| | - Karolina Kopacz
- Academic Laboratory of Movement and Human Physical Performance “DynamoLab”, Medical University of Lodz, Łódź, Poland
| | - Gianluca Padula
- Academic Laboratory of Movement and Human Physical Performance “DynamoLab”, Medical University of Lodz, Łódź, Poland
| | - Hanna Jerczynska
- Central Scientific Laboratory, Medical University of Lodz, Łódź, Poland
| | - Robert Stawski
- Department of Clinical Physiology, Medical University of Lodz, Łódź, Poland
| | - Dariusz Nowak
- Department of Clinical Physiology, Medical University of Lodz, Łódź, Poland
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3
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Shih LJ, Yang CC, Liao MT, Lu KC, Hu WC, Lin CP. An important call: Suggestion of using IL-10 as therapeutic agent for COVID-19 with ARDS and other complications. Virulence 2023; 14:2190650. [PMID: 36914565 PMCID: PMC10026935 DOI: 10.1080/21505594.2023.2190650] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
Abstract
The global coronavirus disease 2019 (COVID-19) pandemic has a detrimental impact on public health. COVID-19 usually manifests as pneumonia, which can progress into acute respiratory distress syndrome (ARDS) related to uncontrolled TH17 immune reaction. Currently, there is no effective therapeutic agent to manage COVID-19 with complications. The currently available anti-viral drug remdesivir has an effectiveness of 30% in SARS-CoV-2-induced severe complications. Thus, there is a need to identify effective agents to treat COVID-19 and the associated acute lung injury and other complications. The host immunological pathway against this virus typically involves the THαβ immune response. THαβ immunity is triggered by type 1 interferon and interleukin-27 (IL-27), and the main effector cells of the THαβ immune response are IL10-CD4 T cells, CD8 T cells, NK cells, and IgG1-producing B cells. In particular, IL-10 exerts a potent immunomodulatory or anti-inflammatory effect and is an anti-fibrotic agent for pulmonary fibrosis. Concurrently, IL-10 can ameliorate acute lung injury or ARDS, especially those caused by viruses. Owing to its anti-viral activity and anti-pro-inflammatory effects, in this review, IL-10 is suggested as a possible treatment agent for COVID-19.
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Affiliation(s)
- Li-Jane Shih
- Department of Medical Laboratory, Taoyuan Armed Forces General Hospital, Taoyuan City, Taiwan
- Graduate Institute of Medical Science, National Defense Medical Center, Taipei City, Taiwan
| | - Chun-Chun Yang
- Department of Laboratory Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Min-Tser Liao
- Department of Pediatrics, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan
- National Defense Medical Center, Department of Pediatrics, Tri-Service General Hospital, Taipei, Taiwan
| | - Kuo-Cheng Lu
- Division of Nephrology, Department of Medicine, Fu-Jen Catholic University Hospital, New Taipei City, Taiwan
| | - Wan-Chung Hu
- Department of Clinical Pathology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Chih-Pei Lin
- Department of Laboratory Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
- h Department of Biotechnology, Ming Chuan University, Taoyuan, Taiwan
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4
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Filina YV, Tikhonova IV, Gabdoulkhakova AG, Rizvanov AA, Safronova VG. Mechanisms of ERK phosphorylation triggered via mouse formyl peptide receptor 2. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119356. [PMID: 36087811 DOI: 10.1016/j.bbamcr.2022.119356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/09/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
Formyl peptide receptors (FPRs) are expressed in the cells of the innate immune system and provide binding with pathogen and damage-associated molecular patterns with subsequent activation of the phagocytes for defense reactions such as chemotaxis, secretory degranulation and ROS generation. Probably, FPR2 is one of the unique receptors in the organism; it is able to recognize numerous ligands of different chemical structure, and moreover, these ligands can trigger opposite phagocyte responses promoting either pro- or anti-inflammatory reactions. Therefore, FPR2 and its signaling pathways are of intense research interest. We found only slight activation of ERK1/2 in the response to peptide ligand WKYMVM in the accelerating phase of ROS generation and more intense ERK1/2 phosphorylation in the declining phase of it in mouse bone marrow granulocytes. Lipid agonist BML-111 did not induce significant ERK phosphorylation when applied for 10-1800 s. To some extent co-localization of ERK1/2 and NADPH oxidase subunits was observed even in the intact cells and didn't change under FPR2 stimulation by WKYMVM, while direct PKC activation by PMA resulted to more efficient interaction between ERK1/2 and p47phox/p67phox and their translocation to plasma membrane. We have shown that phosphorylation and activation of ERK1/2 in bone marrow granulocytes depended on FPR2-triggered activity of PI3K and PKC, phosphatase DUSP6, and, the most but not the least, on ROS generation. Since blocking of ROS generation led to a slowdown of ERK activation indicating a significant contribution of ROS to the secondary regulation of ERK activity.
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Affiliation(s)
- Yu V Filina
- Openlab "Gene and Cell Technologies", Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation.
| | - I V Tikhonova
- Laboratory of Cellular Neurobiology, Institute of Cell Biophysics of Russian Academy of Sciences, Pushchino, Russian Federation
| | - A G Gabdoulkhakova
- Openlab "Gene and Cell Technologies", Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation; Central Research Laboratory, Kazan State Medical Academy, Federal State Budgetary Educational Institution of Further Professional Education "Russian Medical Academy of Continuous Professional Education" of the Ministry of Healthcare of the Russian Federation, Kazan, Russian Federation
| | - A A Rizvanov
- Openlab "Gene and Cell Technologies", Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - V G Safronova
- Laboratory of Cellular Neurobiology, Institute of Cell Biophysics of Russian Academy of Sciences, Pushchino, Russian Federation
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5
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Schroeder-Castagno M, Del Rio-Serrato A, Wilhelm A, Romero-Suárez S, Schindler P, Alvarez-González C, Duchow AS, Bellmann-Strobl J, Ruprecht K, Hastermann M, Grütz G, Wildemann B, Jarius S, Schmitz-Hübsch T, Paul F, Infante-Duarte C. Impaired response of blood neutrophils to cell-death stimulus differentiates AQP4-IgG-seropositive NMOSD from MOGAD. J Neuroinflammation 2022; 19:239. [PMID: 36183103 PMCID: PMC9526338 DOI: 10.1186/s12974-022-02600-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 09/17/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In neuromyelitis optica spectrum disorders (NMOSD) and myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD), neutrophils are found in CNS lesions. We previously demonstrated that NMOSD neutrophils show functional deficiencies. Thus, we hypothesized that neutrophil accumulation in the CNS may be facilitated by impairments affecting mechanisms of neutrophil death. OBJECTIVE To evaluate cell death in blood neutrophils from aquaporin-4 (AQP4)-IgG-seropositive NMOSD and MOGAD patients as well as matched healthy controls (HC) using in vitro assays. METHODS Twenty-eight AQP4 + NMOSD and 19 MOGAD patients in stable disease phase as well as 45 age- and sex-matched HC were prospectively recruited. To induce cell death, isolated neutrophils were cultured with/without phorbol 12-myristate 13-acetate (PMA). Spontaneous and PMA-induced NETosis and apoptosis were analyzed using 7-AAD and annexin-V by flow cytometry. Caspase-3 was assessed by western blot. Myeloperoxidase-DNA complexes (MPO-DNA), MPO and elastase were evaluated by ELISA, and cell-free DNA (cfDNA) by a fluorescence-based assay. Reactive oxygen species (ROS) were evaluated by a dihydrorhodamine 123-based cytometric assay. Serum GM-CSF, IL-6, IL-8, IL-15, TNF-ɑ and IL-10 were evaluated by multiplex assays, and neurofilament light chain (NfL) by single-molecule array assay. RESULTS In response to PMA, neutrophils from AQP4 + NMOSD but not from MOGAD patients showed an increased survival, and subsequent reduced cell death (29.6% annexin V+ 7-AAD+) when compared to HC (44.7%, p = 0.0006). However, AQP4 + NMOSD also showed a mild increase in annexin V+ 7-AAD- early apoptotic neutrophils (24.5%) compared to HC (20.8%, p = 0.048). PMA-induced reduction of caspase-3 activation was more pronounced in HC (p = 0.020) than in AQP4 + NMOSD neutrophils (p = 0.052). No differences were observed in neutrophil-derived MPO-DNA or serum levels of MPO, elastase, IL-6, IL-8 and TNF-ɑ. IL-15 levels were increased in both groups of patients. In AQP4 + NMOSD, an increase in cfDNA, GM-CSF and IL-10 was found in serum. A positive correlation among cfDNA and NfL was found in AQP4 + NMOSD. CONCLUSIONS AQP4 + NMOSD neutrophils showed an increased survival capacity in response to PMA when compared to matched HC neutrophils. Although the data indicate that the apoptotic but not the NETotic response is altered in these neutrophils, additional evaluations are required to validate this observation.
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Affiliation(s)
- Maria Schroeder-Castagno
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany.,Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Campus Berlin-Buch GmbH, Robert-Rössle-Straße 10, 13125, Berlin, Germany.,Institute for Medical Immunology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Alba Del Rio-Serrato
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany.,Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Campus Berlin-Buch GmbH, Robert-Rössle-Straße 10, 13125, Berlin, Germany.,Institute for Medical Immunology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Andreas Wilhelm
- BIH Center for Regenerative Therapies (BCRT) Charité- Humboldt-Universität Zu Berlin and Berlin Institute of Health, Institute for Medical Immunology, Core Unit Immunocheck-Biomarker Immunologisches Studienlabor (ISL), Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Silvina Romero-Suárez
- Institute for Medical Immunology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.,Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, University of Heidelberg, 68167, Mannheim, Germany
| | - Patrick Schindler
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany.,Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Campus Berlin-Buch GmbH, Robert-Rössle-Straße 10, 13125, Berlin, Germany.,Department of Neurology, Charité-Universitätsmedizin Berlin, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Cesar Alvarez-González
- Institute for Medical Immunology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.,Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, NeuroCure Clinical Research Center, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany.,Neurologic Clinic and Policlinic, Departments of Medicine, University Hospital Basel & RC2NB - Research Center for Clinical Neuroimmunology and Neuroscience, University of Basel, Basel, Switzerland
| | - Ankelien-Solveig Duchow
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, NeuroCure Clinical Research Center, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Judith Bellmann-Strobl
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany.,Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, NeuroCure Clinical Research Center, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Klemens Ruprecht
- Department of Neurology, Charité-Universitätsmedizin Berlin, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Maria Hastermann
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany.,Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, NeuroCure Clinical Research Center, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany.,Department of Neurology, Charité-Universitätsmedizin Berlin, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Gerald Grütz
- BIH Center for Regenerative Therapies (BCRT) Charité- Humboldt-Universität Zu Berlin and Berlin Institute of Health, Institute for Medical Immunology, Core Unit Immunocheck-Biomarker Immunologisches Studienlabor (ISL), Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Brigitte Wildemann
- Molecular Neuroimmunology Group, Department of Neurology, University of Heidelberg, Heidelberg, Germany
| | - Sven Jarius
- Molecular Neuroimmunology Group, Department of Neurology, University of Heidelberg, Heidelberg, Germany
| | - Tanja Schmitz-Hübsch
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany.,Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, NeuroCure Clinical Research Center, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany.,Department of Neurology, Charité-Universitätsmedizin Berlin, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Friedemann Paul
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany.,Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, NeuroCure Clinical Research Center, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany.,Department of Neurology, Charité-Universitätsmedizin Berlin, Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany
| | - Carmen Infante-Duarte
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, ECRC Experimental and Clinical Research Center, a Cooperation Between the Max Delbrück Center for Molecular Medicine in the Helmholtz Association and Charité-Universitätsmedizin Berlin, Lindenberger Weg 80, 13125, Berlin, Germany. .,Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Campus Berlin-Buch GmbH, Robert-Rössle-Straße 10, 13125, Berlin, Germany. .,Institute for Medical Immunology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.
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6
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The Role of Inflammatory Cytokines in the Pathogenesis of Colorectal Carcinoma—Recent Findings and Review. Biomedicines 2022; 10:biomedicines10071670. [PMID: 35884974 PMCID: PMC9312930 DOI: 10.3390/biomedicines10071670] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 11/17/2022] Open
Abstract
The inflammatory process plays a significant role in the development of colon cancer (CRC). Intestinal cytokine networks are critical mediators of tissue homeostasis and inflammation but also impact carcinogenesis at all stages of the disease. Recent studies suggest that inflammation is of greater importance in the serrated pathway than in the adenoma-carcinoma pathway. Interleukins have gained the most attention due to their potential role in CRC pathogenesis and promising results of clinical trials. Malignant transformation is associated with the pro-tumorigenic and anti-tumorigenic cytokines. The harmony between proinflammatory and anti-inflammatory factors is crucial to maintaining homeostasis. Immune cells in the tumor microenvironment modulate immune sensitivity and facilitate cancer escape from immune surveillance. Therefore, clarifying the role of underlying cytokine pathways and the effects of their modulation may be an important step to improve the effectiveness of cancer immunotherapy.
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7
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Small AG, Perveen K, Putty T, Patel N, Quinn P, Wechalekar MD, Hii CS, Quach A, Ferrante A. Neutrophils Require Activation to Express Functional Cell-Surface Complement Receptor Immunoglobulin. Front Immunol 2022; 13:840510. [PMID: 35317169 PMCID: PMC8934411 DOI: 10.3389/fimmu.2022.840510] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/16/2022] [Indexed: 11/13/2022] Open
Abstract
The phagocytosis-promoting complement receptor, Complement Receptor Immunoglobulin (CRIg), is exclusively expressed on macrophages. It has been demonstrated that expression in macrophages could be modulated by inflammatory mediators, including cytokines. This raised the possibility that a major phagocyte, the neutrophil, may also express CRIg following activation with inflammatory mediators. Here we show that resting peripheral blood neutrophil lysates subjected to protein analysis by Western blot revealed a 35 kDa CRIg isoform, consistent with the expression of CRIg mRNA by RT-PCR. By flow cytometry, CRIg was detected intracellularly and in very minor amounts on the cell surface. Interestingly, expression on the cell surface was significantly increased to functional levels after activation with inflammatory mediators/neutrophil activators; N-Formylmethionine-leucyl-phenylalanine, tumor necrosis factor (TNF), Granulocyte-Macrophage Colony stimulating Factor (GM-CSF), bacterial lipopolysaccharide, leukotriene B4 and phorbol myristate acetate. The increase in expression required p38 MAP kinase and protein kinase C activation, as well as intracellular calcium. Neutrophils which were defective in actin microfilament reorganization due to a mutation in ARPC1B or inhibition of its upstream regulator, Rac2 lose their ability to upregulate CRIg expression. Inhibition of another small GTPase, Rab27a, with pharmacological inhibitors prevented the increase in CRIg expression, suggesting a requirement for the actin cytoskeleton and exocytosis. Engagement of CRIg on TNF-primed neutrophils with an anti-CRIg monoclonal antibody increased the release of superoxide and promoted the activation of p38 but not ERK1/ERK2 or JNK MAP kinases. The TNF-induced increase in killing of Staphylococcus aureus was blocked by the anti-CRIg antibody. Adding to the anti-microbial role of CRIg, it was found that GM-CSF priming lead to the release of neutrophil extracellular traps. Interestingly in contrast to the above mediators the anti-inflammatory cytokine IL-10 caused a decrease in basal expression and GM-CSF induced increase in CRIg expression. The data demonstrate that neutrophils also express CRIg which is regulated by inflammatory mediators and cytokines. The findings show that the neutrophil antimicrobial function involving CRIg requires priming as a means of arming the cell strategically with microbial invasion of tissues and the bloodstream.
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Affiliation(s)
- Annabelle G. Small
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Department of Molecular and Biomedical Science, School of Biological Sciences, University of Adelaide, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- Rheumatology Department, College of Medicine and Public Health, Flinders Medical Centre, Flinders University, Bedfort Park, SA, Australia
| | - Khalida Perveen
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Trishni Putty
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Nikita Patel
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Patrick Quinn
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- Department of Allergy and Immunology, Women’s and Children’s Health Network, North Adelaide, SA, Australia
| | - Mihir D. Wechalekar
- Rheumatology Department, College of Medicine and Public Health, Flinders Medical Centre, Flinders University, Bedfort Park, SA, Australia
| | - Charles S. Hii
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Alex Quach
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Antonio Ferrante
- Department of Immunopathology, South Australia (SA) Pathology, Women’s and Children’s Hospital, North Adelaide, SA, Australia
- Department of Molecular and Biomedical Science, School of Biological Sciences, University of Adelaide, North Adelaide, SA, Australia
- Robinson Research Institute and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- *Correspondence: Antonio Ferrante,
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8
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Chmielecki A, Bortnik K, Galczynski S, Padula G, Jerczynska H, Stawski R, Nowak D. Exhaustive Exercise Increases Spontaneous but Not fMLP-Induced Production of Reactive Oxygen Species by Circulating Phagocytes in Amateur Sportsmen. BIOLOGY 2022; 11:103. [PMID: 35053101 PMCID: PMC8773189 DOI: 10.3390/biology11010103] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 12/22/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
Strenuous exercise alters the oxidative response of blood phagocytes to various agonists. However, little is known about spontaneous post exercise oxidant production by these cells. In this cross-over trial, we tested whether an exhaustive treadmill run at a speed corresponding to 70% of VO2max affects spontaneous and fMLP-provoked oxidant production by phagocytes in 18 amateur sportsmen. Blood was collected before, just after, and 1, 3, 5 and 24 h post exercise for determination of absolute and normalized per phagocyte count spontaneous (a-rLBCL, rLBCL) and fMLP-induced luminol-enhanced whole blood chemiluminescence (a-fMLP-LBCL, fMLP-LBCL). a-rLBCL and rLBCL increased by 2.5- and 1.5-times just after exercise (p < 0.05) and then returned to baseline or decreased by about 2-times at the remaining time-points, respectively. a-fMLP-LBCL increased 1.7- and 1.6-times just after and at 3 h post-exercise (p < 0.05), respectively, while fMLP-LBCL was suppressed by 1.5- to 2.3-times at 1, 3, 5 and 24 h post-exercise. No correlations were found between elevated post-exercise a-rLBCL, a-fMLP-LBCL and run distance to exhaustion. No changes of oxidants production were observed in the control arm (1 h resting instead of exercise). Exhaustive exercise decreased the blood phagocyte-specific oxidative response to fMLP while increasing transiently spontaneous oxidant generation, which could be a factor inducing secondary rise in antioxidant enzymes activity.
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Affiliation(s)
- Adam Chmielecki
- Sports Centre, Medical University of Lodz, 6-go Sierpnia 69, 90-645 Lodz, Poland; (A.C.); (K.B.)
| | - Krzysztof Bortnik
- Sports Centre, Medical University of Lodz, 6-go Sierpnia 69, 90-645 Lodz, Poland; (A.C.); (K.B.)
| | - Szymon Galczynski
- Academic Laboratory of Movement and Human Physical Performance “DynamoLab”, Medical University of Lodz, Pomorska 251, 92-216 Lodz, Poland; (S.G.); (G.P.)
| | - Gianluca Padula
- Academic Laboratory of Movement and Human Physical Performance “DynamoLab”, Medical University of Lodz, Pomorska 251, 92-216 Lodz, Poland; (S.G.); (G.P.)
| | - Hanna Jerczynska
- Central Scientific Laboratory, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland;
| | - Robert Stawski
- Department of Clinical Physiology, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland;
| | - Dariusz Nowak
- Department of Clinical Physiology, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland;
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9
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Filina Y, Gabdoulkhakova A, Rizvanov A, Safronova V. MAP kinases in regulation of NOX activity stimulated through two types of formyl peptide receptors in murine bone marrow granulocytes. Cell Signal 2021; 90:110205. [PMID: 34826588 DOI: 10.1016/j.cellsig.2021.110205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/29/2021] [Accepted: 11/19/2021] [Indexed: 11/16/2022]
Abstract
The functional activity of the phagocytes, as well as the development and resolution of the inflammation, is determined by formylpeptide receptors (FPRs) signaling. There is a growing data on the signaling pathways from two major types of formylpeptide receptors, FPR1 and FPR2, which could be activated by different sets of ligands to provide certain defense functions. Generation of reactive oxygen species (ROS) by the membrane enzyme NADPH oxidase is the most important among them. One of the most studied and significant mechanism for the regulation of activity of NADPH oxidase is phosphorylation by a variety of kinases, including MAP kinases. The question arose whether the role of MAPKs differ in the activation of NADPH oxidase through FPR1 and FPR2. We have studied Fpr1- and Fpr2-induced phosphorylation of p38, ERK, and JNK kinases and their role in the activation of the respiratory burst in isolated mice bone marrow granulocytes. Data has shown distinct patterns of MAP kinase activity for Fpr1 and Fpr2: JNK was involved in both Fpr1 and Fpr2 mediated activation of ROS production, while p38 MAPK and ERK were involved in Fpr1 induced ROS generation only.
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Affiliation(s)
- Yuliya Filina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation.
| | - Aida Gabdoulkhakova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation; Kazan State Medical Academy, Federal State Budgetary Educational Institution of Further Professional Education "Russian Medical Academy of Continuous Professional Education" of the Ministry of Healthcare of the Russian Federation, Kazan, Russian Federation
| | - Albert Rizvanov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russian Federation
| | - Valentina Safronova
- Institute of Cell Biophysics of Russian Academy of Sciences, Pushchino, Russian Federation
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10
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Chen G, Zhang J, Sheng M, Zhang S, Wu Q, Liu L, Yu B, Kou J. Serum of limb remote ischemic postconditioning inhibits fMLP-triggered activation and reactive oxygen species releasing of rat neutrophils. Redox Rep 2021; 26:176-183. [PMID: 34663202 PMCID: PMC8530488 DOI: 10.1080/13510002.2021.1982515] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Objectives The study explores the protective role of the peripheral serum of limb remote ischemic postconditioning (LRIP) in reducing the reactive oxygen species (ROS) levels and neutrophil activation, which are responsible for the deleterious reperfusion injury. Methods LRIP was induced in Sprague–Dawley rats by three cycles of 5 min occlusion /5 min reperfusion on the left hind limb. The blood samples were collected before LRIP or 0 and 1 h after LRIP (named SerumSham, SerumLRIP0, SerumLRIP1, respectively). The effects of LRIP serum on ROS level and neutrophils activation were determined. The expression of MyD88-TRAF6-MAPKs and PI3K/AKT pathways in neutrophils were examined. Results When compared with SerumSham, SerumLRIP0 and SerumLRIP1 significantly reduced the ROS released from neutrophils activated by fMLP. Meanwhile, the mRNA expression levels of NADPH oxidase subunit p22phox and multiple ROS-producing related key proteins, such as NADPH oxidase subunit p47phox ser 304, ser 345. MyD88, p-ERK, p-JNK and p-P38 expression of neutrophils were downregulated by SerumLRIP0 and SerumLRIP1. SerumLRIP1 also downregulated p47phox mRNA expression and tumor necrosis factor receptor-associated factor 6 (TRAF6) protein expression. Conclusion LRIP serum protects against ROS level and neutrophils activation involving the MyD88-TRAF6-MAPKs. This finding provides new insight into the understanding of LRIP mechanisms.
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Affiliation(s)
- Gangling Chen
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China.,State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Jiangwei Zhang
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China.,State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Mingyue Sheng
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China.,State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Sanli Zhang
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China.,State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Qi Wu
- State Key Laboratory of Natural Medicines, Research Department of Pharmacognosy, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Lei Liu
- Department of Anesthesiology, Center for Translational Research in Neurodegenerative Disease and McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Boyang Yu
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China.,State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Junping Kou
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China.,State Key Laboratory of Natural Products, Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Chinese Material Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China
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11
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Lin R, Li L. Innate Neutrophil Memory Dynamics in Disease Pathogenesis. Handb Exp Pharmacol 2021; 276:43-64. [PMID: 34486096 DOI: 10.1007/164_2021_538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Neutrophils, the most abundant leukocytes in circulation and the first responders to infection and inflammation, closely modulate both acute and chronic inflammatory processes. Resting neutrophils constantly patrol vasculature and migrate to tissues when challenges occur. When infection and/or inflammation recede, tissue neutrophils will be subsequently cleaned up by macrophages which collectively contribute to the resolution of inflammation. While most studies focus on the anti-microbial function of neutrophils including phagocytosis, degranulation, and neutrophil extracellular traps (NETs) formation, recent research highlighted additional contributions of neutrophils beyond simply controlling infectious agents. Neutrophils with resolving characteristics may alter the activities of neighboring cells and facilitate inflammation resolution, modulate long-term macrophage and adaptive immune responses, therefore having important impacts on host pathophysiology. The focus of this chapter is to provide an updated assessment of recent progress in the emerging field of neutrophil programming and memory in the context of both acute and chronic diseases.
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Affiliation(s)
- RuiCi Lin
- Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, USA.,Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Liwu Li
- Translational Biology, Medicine, and Health Graduate Program, Virginia Tech, Blacksburg, VA, USA. .,Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA.
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12
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Watkins LR, Chavez RA, Landry R, Fry M, Green-Fulgham SM, Coulson JD, Collins SD, Glover DK, Rieger J, Forsayeth JR. Targeted interleukin-10 plasmid DNA therapy in the treatment of osteoarthritis: Toxicology and pain efficacy assessments. Brain Behav Immun 2020; 90:155-166. [PMID: 32800926 DOI: 10.1016/j.bbi.2020.08.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/02/2020] [Accepted: 08/07/2020] [Indexed: 02/02/2023] Open
Abstract
Osteoarthritis results in chronic pain and loss of function. Proinflammatory cytokines create both osteoarthritis pathology and pain. Current treatments are poorly effective, have significant side effects, and have not targeted the cytokines central to osteoarthritis development and maintenance. Interleukin-10 is an anti-inflammatory cytokine that potently and broadly suppresses proinflammatory cytokine activity. However, interleukin-10 protein has a short half-life in vivo and poor joint permeability. For sustained IL-10 activity, we developed a plasmid DNA-based therapy that expresses a long-acting human interleukin-10 variant (hIL-10var). Here, we describe the 6-month GLP toxicology study of this therapy. Intra-articular injections of hIL-10var pDNA into canine stifle joints up to 1.5 mg bilaterally were well-tolerated and without pathologic findings. This represents the first long-term toxicologic assessment of intra-articular pDNA therapy. We also report results of a small double-blind, placebo-controlled study of the effect of intra-articular hIL-10var pDNA on pain measures in companion (pet) dogs with naturally occurring osteoarthritis. This human IL-10-based targeted therapy reduced pain measures in the dogs, based on veterinary and owner ratings, without any adverse findings. These results with hIL-10var pDNA therapy, well-tolerated and without toxicologic effects, establish the basis for clinical trials of a new class of safe and effective therapies for OA.
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Affiliation(s)
- Linda R Watkins
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado - Boulder, Boulder, CO, USA.
| | | | - Robert Landry
- Colorado Center for Animal Pain Management Veterinary Care Center, Westminster, CO, USA
| | - Megan Fry
- Colorado Center for Animal Pain Management Veterinary Care Center, Westminster, CO, USA
| | - Suzanne M Green-Fulgham
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado - Boulder, Boulder, CO, USA
| | - Jonathan D Coulson
- Department of Psychology and Neuroscience, Center for Neuroscience, University of Colorado - Boulder, Boulder, CO, USA
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13
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Fazza TF, Pinheiro BV, da Fonseca LMC, Sergio LPDS, Botelho MP, Lopes GDM, de Paoli F, da Fonseca ADS, Lucinda LMF, Reboredo MM. Effect of low-level laser therapy on the inflammatory response in an experimental model of ventilator-induced lung injury. Photochem Photobiol Sci 2020; 19:1356-1363. [PMID: 32761018 PMCID: PMC8047601 DOI: 10.1039/d0pp00053a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The effect of low-level laser therapy (LLLT) on an experimental model of ventilator-induced lung injury (VILI) was evaluated in this study. 24 adult Wistar rats were randomized into four groups: protective mechanical ventilation (PMV), PMV + laser, VILI and VILI + laser. The animals of the PMV and VILI groups were ventilated with tidal volumes of 6 and 35 ml kg−1, respectively, for 90 minutes. After the first 60 minutes of ventilation, the animals in the laser groups were irradiated (808 nm, 100 mW power density, 20 J cm−2 energy density, continuous emission mode, and exposure time of 5 s) and after 30 minutes of irradiation, the animals were euthanized. Lung samples were removed for morphological analysis, bronchoalveolar lavage (BAL) and real time quantitative polynucleotide chain reaction (RT-qPCR). The VILI group showed a greater acute lung injury (ALI) score with an increase in neutrophil infiltration, higher neutrophil count in the BAL fluid and greater cytokine mRNA expression compared to the PMV groups (p < 0.05). The VILI ± laser group when compared to the VILI group showed a lower ALI score (0.35 ± 0.08 vs. 0.54 ± 0.13, p < 0.05), alveolar neutrophil infiltration (7.00 ± 5.73 vs. 21.50 ± 9.52, p < 0.05), total cell count (1.90 ± 0.71 vs. 4.09 ± 0.96 × 105, p < 0.05) and neutrophil count in the BAL fluid (0.60 ± 0.37 vs. 2.28 ± 0.48 × 105, p < 0.05). Moreover, LLLT induced a decrease in pro-inflammatory and an increase of anti-inflammatory mRNA levels compared to the VILI group (p < 0.05). In conclusion, LLLT was found to reduce the inflammatory response in an experimental model of VILI.
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Affiliation(s)
- Thaís Fernanda Fazza
- Pulmonary Research Laboratory, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil. and Center of Reproductive Biology, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Bruno Valle Pinheiro
- Pulmonary Research Laboratory, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil. and Center of Reproductive Biology, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Lídia Maria Carneiro da Fonseca
- Pulmonary Research Laboratory, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil. and Center of Reproductive Biology, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Luiz Philippe da Silva Sergio
- Department of Biophysics and Biometry, Institute of Biology Roberto Alcantara Gomes, Rio de Janeiro State University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mateus Pinto Botelho
- Pulmonary Research Laboratory, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
| | - Gabrielle de Moura Lopes
- Pulmonary Research Laboratory, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
| | - Flavia de Paoli
- Department of Morphology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Adenilson de Souza da Fonseca
- Department of Biophysics and Biometry, Institute of Biology Roberto Alcantara Gomes, Rio de Janeiro State University, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leda Marília Fonseca Lucinda
- Pulmonary Research Laboratory, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil. and Center of Reproductive Biology, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil and Department of Morphology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Maycon Moura Reboredo
- Pulmonary Research Laboratory, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil. and Center of Reproductive Biology, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
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14
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Abstract
ABSTRACT Neutrophils play a critical role in the eradication of pathogenic organisms, particularly bacteria. However, in the septic patient the prolonged activation and accumulation of neutrophils may augment tissue and organ injury. This review discusses the different activation states and chemotaxis of neutrophils in septic patients. Neutrophil killing of bacteria and the formation of neutrophil extracellular traps represent important components of the innate immune response and they become dysregulated during sepsis, possibly through changes in their metabolism. Delayed neutrophil apoptosis may contribute to organ injury, or allow better clearance of pathogens. Neutrophils provide a friendly immune response to clear infections, but excessive activation and recruitment has the potential to turn them into potent foes.
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15
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Celliers A, Rautenbach Y, Hooijberg E, Christopher M, Goddard A. Neutrophil Myeloperoxidase Index in Dogs With Babesiosis Caused by Babesia rossi. Front Vet Sci 2020; 7:72. [PMID: 32133380 PMCID: PMC7040022 DOI: 10.3389/fvets.2020.00072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 01/28/2020] [Indexed: 11/13/2022] Open
Abstract
Babesiosis caused by the virulent tick-borne hemoprotozoan, Babesia rossi, results in a marked systemic inflammatory host response in dogs. Neutrophils form part of the innate immune response and contains myeloperoxidase (MPO) as the predominant component of the neutrophil lysosomal protein in azurophilic granules. The neutrophil myeloperoxidase index (MPXI), determined on the ADVIA hematology analyzer, is a quantitative estimate of intracellular MPO content. Objectives of this study were to: (a) compare MPXI in dogs with babesiosis with healthy control dogs; (b) compare MPXI in dogs that died from babesiosis with dogs that survived and controls; and (c) correlate the MPXI with the previously determined segmented and band neutrophil count and cytokine concentrations in dogs with babesiosis. Data for 140 dogs naturally infected with B. rossi and 20 healthy control dogs were retrospectively evaluated. Neutrophil counts and MPXI were determined on an ADVIA 2120 analyzer. Cytokine concentrations [interleukin (IL)-2, IL-6, IL-8, IL-10, IL-18, granulocyte-macrophage colony stimulating factor (GM-CSF), and monocyte chemo-attractant protein-1 (MCP-1)] were determined using a canine-specific multiplex immunoassay. The mortality rate of the Babesia-infected dogs was 11% (15/140). MPXI was significantly higher in Babesia-infected dogs (P = 0.033), and in Babesia-infected non-survivors (P = 0.011), compared with healthy control dogs. In Babesia-infected dogs a significant positive correlation was found between MPXI and IL-10 (r = 0.211, P = 0.039) and a significant negative correlation was found between MPXI and IL-8 (r = -0.350, P < 0.001). In Babesia-infected non-survivors, significant positive correlations were found between MPXI and IL-2 (r = 0.616, P = 0.033), IL-6 (r = 0.615, P = 0.033), IL-18 (r = 0.613, P = 0.034), GM-CSF (r = 0.630, P = 0.028), and MCP-1 (r = 0.713, P = 0.009). In Babesia-infected survivors, a significant negative correlation was found between MPXI and IL-8 (r = -0.363, P = 0.001). MPXI was correlated with pro-inflammatory cytokines in Babesia-infected dogs that died. The potential of MPXI as a novel marker of inflammation and prognosis in dogs infected with B. rossi, thus warrants further investigation.
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Affiliation(s)
- Anri Celliers
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Yolandi Rautenbach
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Emma Hooijberg
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Mary Christopher
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, CA, United States
| | - Amelia Goddard
- Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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16
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Abstract
PURPOSE OF REVIEW Neutrophils priming has been long studied in vitro. Recent studies describe it in vivo. In pathophysiological conditions, complex, heterogeneous characteristics of priming are described in the last few years. RECENT FINDINGS Priming can occur systemically when insults such as sepsis or trauma result in an array of circulating mediators and circulating primed neutrophils seem to exert detrimental effects either directly, or indirectly by interacting with other cells, thereby contributing to the development of organ dysfunction. Local priming of neutrophils augments their ability to clear infection, but may also lead to local bystander tissue injury, for example, in the inflamed joint. The complexity, heterogeneity and dynamic nature of inflammatory responses and the accessibility of cells from local sites make neutrophil priming challenging to study in human disease; however, recent advances have made significant progress to this field. SUMMARY Herein, we summarize the literature regarding neutrophil priming in selected conditions. In some diseases and in the setting of specific genetic influences, the priming repertoire seems to be restricted, with only some neutrophil functions upregulated. A greater understanding of the nature of neutrophil priming and its role in human disease is required before this process becomes tractable to therapeutic intervention.
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17
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Turunen A, Kuuliala A, Penttilä A, Kaukonen KM, Mustonen H, Pettilä V, Puolakkainen P, Kylänpää L, Kuuliala K. Time course of signaling profiles of blood leukocytes in acute pancreatitis and sepsis. Scandinavian Journal of Clinical and Laboratory Investigation 2019; 80:114-123. [PMID: 31833422 DOI: 10.1080/00365513.2019.1700548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Activation of intracellular signaling pathways in circulating leukocytes represents an early step in systemic immune-inflammatory response occurring e.g. in acute pancreatitis (AP) and sepsis. Previously, we found aberrations in the phosphorylation of leukocyte signaling proteins in patients with sepsis or AP (measured <48 h from hospital admission) resembling each other and associating with AP severity. Of these patients, those with sepsis or severe AP complicated by persistent organ dysfunction (OD+, n = 17) and patients with moderately severe AP (OD-, n = 6) were followed up in this study by measuring the phosphorylations at two additional time points (2-4 and 5-8 days after the initial sample) using phosphospecific whole blood flow cytometry. Twenty-eighty healthy subjects served as controls (HC). Constitutive STAT3 phosphorylation (pSTAT3) declined in monocytes and neutrophils of OD-/OD + and in lymphocytes of OD + and remained higher in OD- than HC. Monocytes of OD-/OD + showed low pSTAT3 and pSTAT1 levels in response to IL-6 through follow-up. Monocyte pNF-κB levels in response to TNF, LPS and E. coli in OD+, to E. coli in OD-, and lymphocyte pNF-κB levels in response to TNF in OD- increased during follow-up but remained lower than in HC, and neutrophil pNF-κB levels in response to TNF declined in OD-. Phorbol myristate acetate + Ca2+ ionophore-stimulated pERK1/2 decreased in neutrophils of OD-/OD+. To conclude, in patients with moderately severe or severe AP or sepsis, improvement and molecular events contributing to OD can be assessed at the level of blood leukocyte signaling.
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Affiliation(s)
- Antti Turunen
- Department of Abdominal Surgery, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Antti Kuuliala
- Bacteriology and Immunology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Anne Penttilä
- Department of Abdominal Surgery, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Kirsi-Maija Kaukonen
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Harri Mustonen
- Department of Abdominal Surgery, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Ville Pettilä
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Pauli Puolakkainen
- Department of Abdominal Surgery, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Leena Kylänpää
- Department of Abdominal Surgery, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Krista Kuuliala
- Bacteriology and Immunology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
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18
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Taurine transporter (TauT) deficiency impairs ammonia detoxification in mouse liver. Proc Natl Acad Sci U S A 2019; 116:6313-6318. [PMID: 30862735 DOI: 10.1073/pnas.1813100116] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Hepatic ammonia handling was analyzed in taurine transporter (TauT) KO mice. Surprisingly, hyperammonemia was present at an age of 3 and 12 months despite normal tissue integrity. This was accompanied by cerebral RNA oxidation. As shown in liver perfusion experiments, glutamine production from ammonia was diminished in TauT KO mice, whereas urea production was not affected. In livers from 3-month-old TauT KO mice protein expression and activity of glutamine synthetase (GS) were unaffected, whereas the ammonia-transporting RhBG protein was down-regulated by about 50%. Double reciprocal plot analysis of glutamine synthesis versus perivenous ammonia concentration revealed that TauT KO had no effect on the capacity of glutamine formation in 3-month-old mice, but doubled the ammonia concentration required for half-maximal glutamine synthesis. Since hepatic RhBG expression is restricted to GS-expressing hepatocytes, the findings suggest that an impaired ammonia transport into these cells impairs glutamine synthesis. In livers from 12-, but not 3-month-old TauT KO mice, RhBG expression was not affected, surrogate markers for oxidative stress were strongly up-regulated, and GS activity was decreased by 40% due to an inactivating tyrosine nitration. This was also reflected by kinetic analyses in perfused liver, which showed a decreased glutamine synthesizing capacity by 43% and a largely unaffected ammonia concentration dependence. It is concluded that TauT deficiency triggers hyperammonemia through impaired hepatic glutamine synthesis due to an impaired ammonia transport via RhBG at 3 months and a tyrosine nitration-dependent inactivation of GS in 12-month-old TauT KO mice.
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19
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Bressan AF, Fonseca GA, Tostes RC, Webb RC, Lima VV, Giachini FR. Interleukin-10 negatively modulates extracellular signal-regulated kinases 1 and 2 in aorta from hypertensive mouse induced by angiotensin II infusion. Fundam Clin Pharmacol 2019; 33:31-40. [PMID: 30144156 PMCID: PMC6816245 DOI: 10.1111/fcp.12409] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 07/27/2018] [Accepted: 08/21/2018] [Indexed: 02/06/2023]
Abstract
The activation of extracellular signal-regulated kinase 1 and 2 (ERK 1/2) pathway promotes increased vascular contractility in angiotensin II (Ang II)-induced hypertensive mice. Interleukin-10 (IL-10) is an immune-regulatory cytokine with the ability to prevent vascular hypercontractility during hypertension. We hypothesized that IL-10 would downregulate vascular ERK 1/2 activation during Ang II-induced hypertension. Wild-type (WT) or IL-10 knockout (IL-10-/- ) mice received Ang II infusion (90 ηg.min) or vehicle (saline), via osmotic mini-pumps (0.25 μL/h for 14 days), whereas another WT group were infused with exogenous IL-10 (0.5 ηg/min, 14 days) simultaneously, or not, with Ang II. Aortic rings were mounted in a myograph, and concentration-response curves to phenylephrine were evaluated, in the presence or absence of ERK 1/2 inhibitor (PD98059, 10 μm, 40 min). Protein expression of vascular ERK 1/2 was determined by Western blot. Ang II infusion increased the maximal contractile response in both WT and IL-10-/- mice. Concomitant infusion of IL-10 and Ang II prevented hypercontractility in the vasculature. Exogenous IL-10 infusion prevented ERK 1/2 activation and hypercontractility, induced by Ang II. These findings suggest that IL-10 negatively modulates ERK 1/2 activation and prevents hypercontractility during Ang II-induced hypertension.
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Affiliation(s)
- Alecsander F. Bressan
- Institute of Biological and Health Sciences, Federal University of Mato Grosso, Barra do Garças, MT, Brazil
| | - Gisele A. Fonseca
- Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Goiás (UFG), Goiânia, GO, Brazil
| | - Rita C. Tostes
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - R. Clinton Webb
- Department of Physiology, Augusta University, Augusta, GA, United States
| | - Victor Vitorino Lima
- Institute of Biological and Health Sciences, Federal University of Mato Grosso, Barra do Garças, MT, Brazil
| | - Fernanda Regina Giachini
- Institute of Biological and Health Sciences, Federal University of Mato Grosso, Barra do Garças, MT, Brazil
- Department of Pharmacology, Institute of Biological Sciences (ICB), Federal University of Goiás (UFG), Goiânia, GO, Brazil
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Reduced cerebrospinal fluid levels of interleukin-10 in children with febrile seizures. Seizure 2019; 65:94-97. [PMID: 30658331 DOI: 10.1016/j.seizure.2019.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/16/2018] [Accepted: 01/12/2019] [Indexed: 11/20/2022] Open
Abstract
PURPOSE The exact etiology of febrile seizures (FS) is still unclear. However, it is thought that cytokine network activation may have a causative role. Therefore, this study aimed to evaluate the levels of interleukin-12 (IL-12) as a proinflammatory cytokine, interleukin-10 (IL-10) as an anti-inflammatory cytokine, and interferon-β (IFN-β), a marker of toll-like receptor-3 activation as a host response to viruses. These cytokine levels were analyzed in the cerebrospinal fluid (CSF) of children after a FS. METHODS With the approval of the Human Research Ethics Committee, 76 patients with FS, who underwent lumbar puncture (LP) for the exclusion of central nervous system (CNS) infection, and who didn't have CSF pleocytosis, were included in the study. The control group consisted of 10 patients with similar ages, with an acute febrile illness and who required LP to exclude CNS infection. The analyses were made by the enzyme-linked immunoassay method. RESULTS Age, gender distribution and CSF IL-12 and IFN- β levels did not differ, but CSF IL-10 levels were significantly lower in the FS group as compared to the control group (0.78 ± 4.5 pg/ml, versus 27 ± 29 pg/ml, p < 0.0001). CONCLUSION The low-level of CSF IL-10, considering its anti-inflammatory properties, may play a role in the etiopathogenesis of FS.
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Gimenez P, Garcia‐Martinez I, Francés R, Gonzalez‐Navajas JM, Mauri M, Alfayate R, Almenara S, Miralles C, Palazon JM, Carnicer F, Pascual S, Such J, Horga JF, Zapater P. Treatment with non-selective beta-blockers affects the systemic inflammatory response to bacterial DNA in patients with cirrhosis. Liver Int 2018; 38:2219-2227. [PMID: 29802788 PMCID: PMC6282820 DOI: 10.1111/liv.13890] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 05/20/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND & AIMS The use of non-selective beta-blockers has been associated with lower rates of infection and reduced infection-associated morbidity in patients with cirrhosis. However, it is unknown if these drugs modify the systemic inflammatory response to circulating bacterial DNA. METHODS Sixty-three patients with cirrhosis were included during an episode of decompensation by ascites. Thirty of those patients were on beta-blockers. Blood samples were obtained after each patient had been in the supine position for at least 30 minutes in a quiet atmosphere. Bacterial DNA, serum cytokines, nitric oxide, and LPS were determined. Phagocytic and oxidative burst activities were determined in polymorphonuclear cells from the patients. RESULTS The detection rate of bacterial DNA in the blood was the same (33%) for patients not treated and treated with non-selective beta-blockers. Patients naive to non-selective beta-blockers showed significantly higher serum levels of IL6, IFN-gamma and IL10 in response to the presence of bacterial DNA. Patients treated with non-selective beta-blockers showed higher basal inflammatory activity that did not change with the presence of bacterial DNA. Monocytes and granulocytes from patients treated with non-selective beta-blockers showed a significantly increased phagocytic capacity in the presence of bacterial DNA. CONCLUSIONS In patients with cirrhosis, chronic treatment with beta-blockers is associated with a higher unstimulated production of serum cytokines and an increased phagocytic activity in the presence of bacterial DNA.
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Affiliation(s)
| | | | - Rubén Francés
- CIBERehdInstituto de Salud Carlos IIIMadridSpain,Departamento Medicina ClínicaUniversidad Miguel HernándezElche, AlicanteSpain
| | | | - Montserrat Mauri
- Servicio de Análisis ClínicosHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain
| | - Rocío Alfayate
- Servicio de Análisis ClínicosHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain
| | - Susana Almenara
- Unidad de Farmacología ClínicaHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain
| | - Cayetano Miralles
- Unidad HepáticaHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain
| | - Jose M. Palazon
- CIBERehdInstituto de Salud Carlos IIIMadridSpain,Departamento Medicina ClínicaUniversidad Miguel HernándezElche, AlicanteSpain,Unidad HepáticaHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain
| | - Fernando Carnicer
- Unidad HepáticaHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain
| | - Sonia Pascual
- CIBERehdInstituto de Salud Carlos IIIMadridSpain,Unidad HepáticaHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain
| | - José Such
- Digestive Disease InstituteCleveland Clinic Abu DhabiAbu DhabiUAE,Lerner School of MedicineCase Western Reserve UniversityClevelandOHUSA
| | - José F. Horga
- Unidad de Farmacología ClínicaHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain,Instituto de BioingenieriaUniversidad Miguel HernándezElche, AlicanteSpain
| | - Pedro Zapater
- CIBERehdInstituto de Salud Carlos IIIMadridSpain,Unidad de Farmacología ClínicaHospital General Universitario de AlicanteInstituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL‐Fundación FISABIO)AlicanteSpain,Instituto de BioingenieriaUniversidad Miguel HernándezElche, AlicanteSpain
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22
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Mitochondrial DNA induces Foley catheter related bladder inflammation via Toll-like receptor 9 activation. Sci Rep 2018; 8:6377. [PMID: 29686303 PMCID: PMC5913242 DOI: 10.1038/s41598-018-24818-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 04/03/2018] [Indexed: 02/08/2023] Open
Abstract
Bladder instrumentation engages the innate immune system via neutrophil activation, promoting inflammation and pain. Elevated levels of mitochondrial DNA (mtDNA) have been associated with tissue damage and organ dysfunction. We hypothesized that local bladder trauma induced by a Foley catheter (FC) will result in mtDNA release, migration of neutrophils into the bladder lumen, and activation of the Toll-like receptor 9 (TLR9) and nuclear factor kappa B (NF-κB) pathway leading to bladder tissue damage. We randomized 10 swine into two groups receiving uncoated, or chloroquine/N-Acetylcysteine (CQ/NAC)-coated FCs. Urine samples were analyzed for mtDNA activation of TLR9/NF-κB as demonstrated by indicators of neutrophil adhesion, migration, and activation. We found that uncoated FCs resulted in a unique active neutrophil phenotype that correlated with bladder epithelial injury, neutrophilia, necrosis, mtDNA release, TLR9/NF-κB activation, transcription and secretion of pro-inflammatory cytokines, and enhanced respiratory burst. In our study we observed that the high levels of mtDNA and elevated TLR9/NF-κB activity were ameliorated in the CQ/NAC-coated FC group. These findings suggest that post-migrated bladder luminal neutrophils are involved in local tissue damage and amelioration of the mtDNA/TLR9/NF-κB inflammatory axis may represent a therapeutic target to prevent inflammation, and bladder tissue injury.
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23
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El-Benna J, Hurtado-Nedelec M, Marzaioli V, Marie JC, Gougerot-Pocidalo MA, Dang PMC. Priming of the neutrophil respiratory burst: role in host defense and inflammation. Immunol Rev 2017; 273:180-93. [PMID: 27558335 DOI: 10.1111/imr.12447] [Citation(s) in RCA: 286] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Neutrophils are the major circulating white blood cells in humans. They play an essential role in host defense against pathogens. In healthy individuals, circulating neutrophils are in a dormant state with very low efficiency of capture and arrest on the quiescent endothelium. Upon infection and subsequent release of pro-inflammatory mediators, the vascular endothelium signals to circulating neutrophils to roll, adhere, and cross the endothelial barrier. Neutrophils migrate toward the infection site along a gradient of chemo-attractants, then recognize and engulf the pathogen. To kill this pathogen entrapped inside the vacuole, neutrophils produce and release high quantities of antibacterial peptides, proteases, and reactive oxygen species (ROS). The robust ROS production is also called 'the respiratory burst', and the NADPH oxidase or NOX2 is the enzyme responsible for the production of superoxide anion, leading to other ROS. In vitro, several soluble and particulate agonists induce neutrophil ROS production. This process can be enhanced by prior neutrophil treatment with 'priming' agents, which alone do not induce a respiratory burst. In this review, we will describe the priming process and discuss the beneficial role of controlled neutrophil priming in host defense and the detrimental effect of excessive neutrophil priming in inflammatory diseases.
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Affiliation(s)
- Jamel El-Benna
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Sorbonne Paris Cité, Laboratoire d'Excellence Inflamex, DHU FIRE, Faculté de Médecine, Site Xavier Bichat, Université Paris Diderot, Paris, France
| | - Margarita Hurtado-Nedelec
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Sorbonne Paris Cité, Laboratoire d'Excellence Inflamex, DHU FIRE, Faculté de Médecine, Site Xavier Bichat, Université Paris Diderot, Paris, France.,Département d'Immunologie et d'Hématologie, UF Dysfonctionnements Immunitaires, HUPNVS, Hôpital Bichat, Paris, France
| | - Viviana Marzaioli
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Sorbonne Paris Cité, Laboratoire d'Excellence Inflamex, DHU FIRE, Faculté de Médecine, Site Xavier Bichat, Université Paris Diderot, Paris, France
| | - Jean-Claude Marie
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Sorbonne Paris Cité, Laboratoire d'Excellence Inflamex, DHU FIRE, Faculté de Médecine, Site Xavier Bichat, Université Paris Diderot, Paris, France.,Département d'Immunologie et d'Hématologie, UF Dysfonctionnements Immunitaires, HUPNVS, Hôpital Bichat, Paris, France
| | - Marie-Anne Gougerot-Pocidalo
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Sorbonne Paris Cité, Laboratoire d'Excellence Inflamex, DHU FIRE, Faculté de Médecine, Site Xavier Bichat, Université Paris Diderot, Paris, France.,Département d'Immunologie et d'Hématologie, UF Dysfonctionnements Immunitaires, HUPNVS, Hôpital Bichat, Paris, France
| | - Pham My-Chan Dang
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Sorbonne Paris Cité, Laboratoire d'Excellence Inflamex, DHU FIRE, Faculté de Médecine, Site Xavier Bichat, Université Paris Diderot, Paris, France
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24
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Chedid P, Boussetta T, Dang PMC, Belambri SA, Marzaioli V, Fasseau M, Walker F, Couvineau A, El-Benna J, Marie JC. Vasoactive intestinal peptide dampens formyl-peptide-induced ROS production and inflammation by targeting a MAPK-p47 phox phosphorylation pathway in monocytes. Mucosal Immunol 2017; 10:332-340. [PMID: 27271317 DOI: 10.1038/mi.2016.51] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 05/03/2016] [Indexed: 02/08/2023]
Abstract
Reactive oxygen species (ROS) produced by the phagocyte NADPH oxidase (NOX2) are required for microbial clearance; however, when produced in excess they exacerbate inflammatory response and injure surrounding tissues. NOX2 is a multicomponent enzyme composed of membrane-associated cytochrome b588 and cytosolic components p47phox, p67phox, p40phox, and rac1/2. We investigated whether vasoactive intestinal peptide (VIP), an endogenous immune-modulatory peptide, could affect ROS production by NOX2 in primary human phagocytes. VIP did not modulate basal ROS production by phagocytes, but it inhibited monocyte and not neutrophil ROS production in response to the bacterial peptide N-formyl-methionyl-leucyl-phenylalanine (fMLF). The action of VIP was essentially mediated by high-affinity G-protein coupled receptors VPAC1 as its specific agonist, [ALA11,22,28]VIP, mimicked VIP-inhibitory effect, whereas the specific VPAC1 antagonist, PG97-269, blunted VIP action. Further, we showed that VIP inhibited fMLF-induced phosphorylation of ERK1/2 (extracellular signal-regulated kinase 1/2), p38MAPK (p38 mitogen-activated protein kinase) pathways, and phosphorylation of p47phox on Ser345 residue. Also, VIP exerted an anti-inflammatory effect in a model of carrageenan-induced inflammation in rats. We thus found that VIP exerts anti-inflammatory effects by inhibiting the "MAPK-p47phox phosphorylation-NOX2 activation" axis. These data suggest that VIP acts as a natural anti-inflammatory agent of the mucosal system and its analogs could be novel anti-inflammatory molecules.
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Affiliation(s)
- P Chedid
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - T Boussetta
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - P M-C Dang
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - S A Belambri
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - V Marzaioli
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - M Fasseau
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
| | - F Walker
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
- Service d'Anatomie et Cytologie Pathologique, Hopital Xavier Bichat, Paris, France
| | - A Couvineau
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - J El-Benna
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
| | - J-C Marie
- Inserm, U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Laboratoire d'Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Paris, France
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25
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Lin CC, Lin WN, Cho RL, Wang CY, Hsiao LD, Yang CM. TNF-α-Induced cPLA 2 Expression via NADPH Oxidase/Reactive Oxygen Species-Dependent NF-κB Cascade on Human Pulmonary Alveolar Epithelial Cells. Front Pharmacol 2016; 7:447. [PMID: 27932980 PMCID: PMC5122718 DOI: 10.3389/fphar.2016.00447] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 11/08/2016] [Indexed: 01/13/2023] Open
Abstract
Tumor necrosis factor-α (TNF-α) triggers activation of cytosolic phospholipase A2 (cPLA2) and then enhancing the synthesis of prostaglandin (PG) in inflammatory diseases. However, the detailed mechanisms of TNF-α induced cPLA2 expression were not fully defined in human pulmonary alveolar epithelial cells (HPAEpiCs). We found that TNF-α-stimulated increases in cPLA2 mRNA (5.2 folds) and protein (3.9 folds) expression, promoter activity (4.3 folds), and PGE2 secretion (4.7 folds) in HPAEpiCs, determined by Western blot, real-time PCR, promoter activity assay and PGE2 ELISA kit. These TNF-α-mediated responses were abrogated by the inhibitors of NADPH oxidase [apocynin (APO) and diphenyleneiodonium chloride (DPI)], ROS [N-acetyl cysteine, (NAC)], NF-κB (Bay11-7082) and transfection with siRNA of ASK1, p47 phox , TRAF2, NIK, IKKα, IKKβ, or p65. TNF-α markedly stimulated NADPH oxidase activation and ROS including superoxide and hydrogen peroxide production which were inhibited by pretreatment with a TNFR1 neutralizing antibody, APO, DPI or transfection with siRNA of TRAF2, ASK1, or p47 phox . In addition, TNF-α also stimulated p47 phox phosphorylation and translocation in a time-dependent manner. On the other hand, TNF-α induced TNFR1, TRAF2, ASK1, and p47 phox complex formation in HPAEpiCs, which were attenuated by a TNF-α neutralizing antibody. We found that pretreatment with NAC, DPI, or APO also attenuated the TNF-α-stimulated IKKα/β and NF-κB p65 phosphorylation, NF-κB (p65) translocation, and NF-κB promoter activity in HPAEpiCs. Finally, we observed that TNF-α-stimulated NADPH oxidase activation and ROS generation activates NF-κB through the NIK/IKKα/β pathway. Taken together, our results demonstrated that in HPAEpiCs, up-regulation of cPLA2 by TNF-α is, at least in part, mediated through the cooperation of TNFR1, TRAF2, ASK1, and NADPH oxidase leading to ROS generation and ultimately activates NF-κB pathway.
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Affiliation(s)
- Chih-Chung Lin
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkou and College of Medicine, Chang Gung University Tao-Yuan, Taiwan
| | - Wei-Ning Lin
- Graduate Institute of Basic Medicine, Fu Jen Catholic University New Taipei City, Taiwan
| | - Rou-Ling Cho
- Department of Physiology and Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University Tao-Yuan, Taiwan
| | - Chen-Yu Wang
- Department of Physiology and Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University Tao-Yuan, Taiwan
| | - Li-Der Hsiao
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkou and College of Medicine, Chang Gung University Tao-Yuan, Taiwan
| | - Chuen-Mao Yang
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkou and College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan; Department of Physiology and Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung UniversityTao-Yuan, Taiwan; Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and TechnologyTao-Yuan, Taiwan
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26
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Peñaloza HF, Schultz BM, Nieto PA, Salazar GA, Suazo I, Gonzalez PA, Riedel CA, Alvarez-Lobos MM, Kalergis AM, Bueno SM. Opposing roles of IL-10 in acute bacterial infection. Cytokine Growth Factor Rev 2016; 32:17-30. [PMID: 27522641 DOI: 10.1016/j.cytogfr.2016.07.003] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 07/14/2016] [Indexed: 12/16/2022]
Abstract
Interleukin-10 (IL-10) is recognized as an anti-inflammatory cytokine that downmodulates inflammatory immune responses at multiple levels. In innate cells, production of this cytokine is usually triggered after pathogen recognition receptor (PRR) engagement by pathogen-associated molecular patterns (PAMPs) or damage-associated molecular patters (DAMPs), as well as by other soluble factors. Importantly, IL-10 is frequently secreted during acute bacterial infections and has been described to play a key role in infection resolution, although its effects can significantly vary depending on the infecting bacterium. While the production of IL-10 might favor host survival in some cases, it may also result harmful for the host in other circumstances, as it can prevent appropriate bacterial clearance. In this review we discuss the role of IL-10 in bacterial clearance and propose that this cytokine is required to recover from infection caused by extracellular or highly pro-inflammatory bacteria. Altogether, we propose that IL-10 drives excessive suppression of the immune response upon infection with intracellular bacteria or in non-inflammatory bacterial infections, which ultimately favors bacterial persistence and dissemination within the host. Thus, the nature of the bacterium causing infection is an important factor that needs to be taken into account when considering new immunotherapies that consist on the modulation of inflammation, such as IL-10. Indeed, induction of this cytokine may significantly improve the host's immune response to certain bacteria when antibiotics are not completely effective.
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Affiliation(s)
- Hernán F Peñaloza
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Barbara M Schultz
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Pamela A Nieto
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Geraldyne A Salazar
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Isidora Suazo
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Pablo A Gonzalez
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile
| | - Claudia A Riedel
- Millennium Institute on Immunology and Immunotherapy, Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas y Facultad de Medicina, Universidad Andrés Bello, Chile
| | - Manuel M Alvarez-Lobos
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Alexis M Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile; Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile; INSERM U1064, Nantes, France
| | - Susan M Bueno
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Chile; INSERM U1064, Nantes, France.
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Hong IS. Stimulatory versus suppressive effects of GM-CSF on tumor progression in multiple cancer types. Exp Mol Med 2016; 48:e242. [PMID: 27364892 PMCID: PMC4973317 DOI: 10.1038/emm.2016.64] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/11/2016] [Accepted: 03/23/2016] [Indexed: 12/18/2022] Open
Abstract
Granulocyte-macrophage colony-stimulating factor (GM-CSF, also called CSF-2) is best known for its critical role in immune modulation and hematopoiesis. A large body of experimental evidence indicates that GM-CSF, which is frequently upregulated in multiple types of human cancers, effectively marks cancer cells with a ‘danger flag' for the immune system. In this context, most studies have focused on its function as an immunomodulator, namely its ability to stimulate dendritic cell (DC) maturation and monocyte/macrophage activity. However, recent studies have suggested that GM-CSF also promotes immune-independent tumor progression by supporting tumor microenvironments and stimulating tumor growth and metastasis. Although some studies have suggested that GM-CSF has inhibitory effects on tumor growth and metastasis, an even greater number of studies show that GM-CSF exerts stimulatory effects on tumor progression. In this review, we summarize a number of findings to provide the currently available information regarding the anticancer immune response of GM-CSG. We then discuss the potential roles of GM-CSF in the progression of multiple types of cancer to provide insights into some of the complexities of its clinical applications.
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Affiliation(s)
- In-Sun Hong
- Laboratory of Stem Cell Research, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, South Korea.,Department of Molecular Medicine, School of Medicine, Gachon University, Incheon, South Korea
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Hong HS, Kim S, Nam S, Um J, Kim YH, Son Y. Effect of substance P on recovery from laser-induced retinal degeneration. Wound Repair Regen 2016; 23:268-77. [PMID: 25682893 DOI: 10.1111/wrr.12264] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 01/13/2015] [Accepted: 01/26/2015] [Indexed: 12/16/2022]
Abstract
Retinal degeneration is caused by neovascularization and persistent inflammation in the retinal pigment epithelium (RPE) and choroid, and causes serious eye disease including age-related macular degeneration (AMD). Thus, inhibiting inflammation and neovascularization may be a primary approach to protect the retina from degeneration. The purpose of this study was to determine whether substance P (SP), which can suppress inflammation and mobilize stem cells, can protect the RPE from degeneration. The effect of SP was evaluated by analyzing systemic inflammation, cell survival, and neovascularization within the argon laser-injured retina of mice. At 1 week postinjury, the SP-treated group had lower tumor necrosis factor-alpha and higher interleukin-10 serum concentrations, and a more intact retinal structure compared to the vehicle-treated group. In mice administered SP repeatedly for 4 weeks, the retinal structure appeared normal and showed sparse neovascularization, whereas the vehicle-treated group showed severe retinal destruction and dense neovascularization. Moreover, the efficacy of SP was identical to that of mesenchymal stem cells that were transplanted into the vitreous after retinal injury. This study highlights the potential for the endogenous neuropeptide SP as a treatment for retinal damage to prevent conditions such as AMD.
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Affiliation(s)
- Hyun Sook Hong
- College of Medicine/ East-West Medical Research Institute, Kyung Hee University
| | - Suna Kim
- Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University
| | - Seungwoo Nam
- Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University
| | - Jihyun Um
- Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University
| | - Yeong Hoon Kim
- Department of Ophthalmology, College of Medicine, The Catholic University of Korea, St. Paul's Hospital, Seoul, Korea
| | - Youngsook Son
- Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University
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Venkatasubramanian S, Tripathi D, Tucker T, Paidipally P, Cheekatla S, Welch E, Raghunath A, Jeffers A, Tvinnereim AR, Schechter ME, Andrade BB, Mackman N, Idell S, Vankayalapati R. Tissue factor expression by myeloid cells contributes to protective immune response against Mycobacterium tuberculosis infection. Eur J Immunol 2016; 46:464-79. [PMID: 26471500 PMCID: PMC4740218 DOI: 10.1002/eji.201545817] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 09/03/2015] [Accepted: 10/12/2015] [Indexed: 12/19/2022]
Abstract
Tissue factor (TF) is a transmembrane glycoprotein that plays an essential role in hemostasis by activating coagulation. TF is also expressed by monocytes/macrophages as part of the innate immune response to infections. In the current study, we determined the role of TF expressed by myeloid cells during Mycobacterium tuberculosis (M. tb) infection by using mice lacking the TF gene in myeloid cells (TF(Δ) ) and human monocyte derived macrophages (MDMs). We found that during M. tb infection, a deficiency of TF in myeloid cells was associated with reduced inducible nitric oxide synthase (iNOS) expression, enhanced arginase 1 (Arg1) expression, enhanced IL-10 production and reduced apoptosis in infected macrophages, which augmented M. tb growth. Our results demonstrate that a deficiency of TF in myeloid cells promotes M2-like phenotype in M .tb infected macrophages. A deficiency in TF expression by myeloid cells was also associated with reduced fibrin deposition and increased matrix metalloproteases (MMP)-2 and MMP-9 mediated inflammation in M. tb infected lungs. Our studies demonstrate that TF expressed by myeloid cells has newly recognized abilities to polarize macrophages and to regulate M. tb growth.
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Affiliation(s)
| | - Deepak Tripathi
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Torry Tucker
- Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Padmaja Paidipally
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Satyanarayana Cheekatla
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Elwyn Welch
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Anjana Raghunath
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Ann Jeffers
- Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Amy R. Tvinnereim
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Melissa E Schechter
- Clinical Research Directorate/Clinical Monitoring Research Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Bruno B Andrade
- Investigative Medicine Branch, Laboratory of Immune Regulation, Centro de Pesquisas Gonçalo Moniz (CPqGM), Fundação Oswaldo Cruz (FIOCRUZ), Salvador, Bahia, 40296-710, Brazil
- Research Center, Brazilian Institute for Tuberculosis Research, Salvador, Bahia, 45204-040, Brazil
| | - Nizel Mackman
- Department of Medicine, The University of North Carolina at Chapel Hill School of Medicine, NC 27516, USA
| | - Steven Idell
- Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
| | - Ramakrishna Vankayalapati
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA
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Grégoire S, Terrada C, Martin GH, Fourcade G, Baeyens A, Marodon G, Fisson S, Billiard F, Lucas B, Tadayoni R, Béhar-Cohen F, Levacher B, Galy A, LeHoang P, Klatzmann D, Bodaghi B, Salomon BL. Treatment of Uveitis by In Situ Administration of Ex Vivo–Activated Polyclonal Regulatory T Cells. THE JOURNAL OF IMMUNOLOGY 2016; 196:2109-18. [DOI: 10.4049/jimmunol.1501723] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 12/21/2015] [Indexed: 02/05/2023]
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O'Neill S, Brault J, Stasia MJ, Knaus UG. Genetic disorders coupled to ROS deficiency. Redox Biol 2015; 6:135-156. [PMID: 26210446 PMCID: PMC4550764 DOI: 10.1016/j.redox.2015.07.009] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 07/15/2015] [Accepted: 07/16/2015] [Indexed: 12/24/2022] Open
Abstract
Maintaining the redox balance between generation and elimination of reactive oxygen species (ROS) is critical for health. Disturbances such as continuously elevated ROS levels will result in oxidative stress and development of disease, but likewise, insufficient ROS production will be detrimental to health. Reduced or even complete loss of ROS generation originates mainly from inactivating variants in genes encoding for NADPH oxidase complexes. In particular, deficiency in phagocyte Nox2 oxidase function due to genetic variants (CYBB, CYBA, NCF1, NCF2, NCF4) has been recognized as a direct cause of chronic granulomatous disease (CGD), an inherited immune disorder. More recently, additional diseases have been linked to functionally altered variants in genes encoding for other NADPH oxidases, such as for DUOX2/DUOXA2 in congenital hypothyroidism, or for the Nox2 complex, NOX1 and DUOX2 as risk factors for inflammatory bowel disease. A comprehensive overview of novel developments in terms of Nox/Duox-deficiency disorders is presented, combined with insights gained from structure-function studies that will aid in predicting functional defects of clinical variants.
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Affiliation(s)
- Sharon O'Neill
- Conway Institute, University College Dublin, Dublin, Ireland
| | - Julie Brault
- Université Grenoble Alpes, TIMC-IMAG Pôle Biologie, CHU de Grenoble, Grenoble, France; CGD Diagnosis and Research Centre, Pôle Biologie, CHU de Grenoble, Grenoble, France
| | - Marie-Jose Stasia
- Université Grenoble Alpes, TIMC-IMAG Pôle Biologie, CHU de Grenoble, Grenoble, France; CGD Diagnosis and Research Centre, Pôle Biologie, CHU de Grenoble, Grenoble, France
| | - Ulla G Knaus
- Conway Institute, University College Dublin, Dublin, Ireland.
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Paracatu LC, de Faria CMQG, Zeraik ML, Quinello C, Rennó C, Palmeira P, da Fonseca LM, Ximenes VF. Hydrophobicity and antioxidant activity acting together for the beneficial health properties of nordihydroguaiaretic acid. Food Funct 2015; 6:1818-31. [PMID: 25927268 DOI: 10.1039/c5fo00091b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Nordihydroguaiaretic acid (NDGA) and rosmarinic acid (RA), phenolic compounds found in various plants and functional foods, have known antioxidant and anti-inflammatory properties. In the present study, we comparatively investigated the importance of hydrophobicity and oxidisability of NDGA and RA, regarding their antioxidant and pharmacological activities. Using a panel of cell-free antioxidant protocols, including electrochemical measurements, we demonstrated that the anti-radical capacities of RA and NDGA were similar. However, the relative capacity of NDGA as an inhibitor of NADPH oxidase (ex vivo assays) was significantly higher compared to RA. The inhibitory effect on NADPH oxidase was not related to simple scavengers of superoxide anions, as confirmed by oxygen consumption by the activated neutrophils. The higher hydrophobicity of NDGA was also a determinant for the higher efficacy of NDGA regarding the inhibition of the release of hypochlorous acid by PMA-activated neutrophil and cytokine (TNF-α and IL-10) production by Staphylococcus aureus-stimulated peripheral blood mononuclear cells. In conclusion, although there have been extensive studies about the pharmacological properties of NDGA, our study showed, for the first time, the importance not only of its antioxidant activity, but also its hydrophobicity as a crucial factor for pharmacological action.
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Affiliation(s)
- Luana Chiquetto Paracatu
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14801-902, Araraquara, São Paulo, Brazil
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Makni-Maalej K, Marzaioli V, Boussetta T, Belambri SA, Gougerot-Pocidalo MA, Hurtado-Nedelec M, Dang PMC, El-Benna J. TLR8, but not TLR7, induces the priming of the NADPH oxidase activation in human neutrophils. J Leukoc Biol 2015; 97:1081-7. [DOI: 10.1189/jlb.2a1214-623r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 03/19/2015] [Indexed: 12/18/2022] Open
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Genomic analysis of LPS-stimulated myeloid cells identifies a common pro-inflammatory response but divergent IL-10 anti-inflammatory responses. Sci Rep 2015; 5:9100. [PMID: 25765318 PMCID: PMC4650320 DOI: 10.1038/srep09100] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 02/12/2015] [Indexed: 01/02/2023] Open
Abstract
Inflammation is an essential physiological response to infection and injury that must be kept within strict bounds. The IL-10/STAT3 anti-inflammatory response (AIR) is indispensable for controlling the extent of inflammation, although the complete mechanisms downstream of STAT3 have not yet been elucidated. The AIR is widely known to extend to other myeloid cells, but it has best been characterized in macrophages. Here we set out to characterize the LPS-mediated pro-inflammatory response and the AIR across a range of myeloid cells. We found that whereas the LPS-induced pro-inflammatory response is broadly similar among macrophages, dendritic cells, neutrophils, mast cells and eosinophils, the AIR is drastically different across all myeloid cell types that respond to IL-10 (all bar eosinophils). We propose a model whereby the IL-10/STAT3 AIR works by selectively inhibiting specific pathways in distinct cell types: in macrophages the AIR most likely works through the inhibition of NF-κB target genes; in DCs and mast cells through indirect IRF disruption; and in neutrophils through IRF disruption and possibly also indirect NF-κB inhibition. In summary, no conserved IL-10/STAT3 AIR effectors were identified; instead a cell type-specific model of the AIR is proposed.
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Impact of fish oils on the outcomes of a mouse model of acutePseudomonas aeruginosapulmonary infection. Br J Nutr 2015; 113:191-9. [DOI: 10.1017/s0007114514003705] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Pseudomonas aeruginosais an opportunistic Gram-negative bacterium that causes pneumonia in immunocompromised humans and severe pulmonary damage in patients with cystic fibrosis. Imbalanced fatty acid incorporation in membranes, including increased arachidonic acid and decreased DHA concentrations, is known to play a critical role in chronic inflammation associated with bacterial infection. Other lipids, such as EPA and alkylglycerols, are also known to play a role in inflammation, particularly by stimulating the immune system, decreasing inflammation and inhibiting bacterial growth. In this context, the goal of the present study was to assess the effect of dietary DHA/EPA, in a 2:1 ratio, and alkylglycerols, as natural compounds extracted from oils of rays and chimeras, respectively, on the inflammatory reaction induced byP. aeruginosapulmonary infection in mice. To this end, mice were fed with a control diet or isolipidic, isoenergetic diets prepared with oils enriched in DHA/EPA (2:1) or alkylglycerols for 5 weeks before the induction of acuteP. aeruginosalung infection by endotracheal instillation. In our model, DHA/EPA (2:1) significantly improved the survival of mice after infection, which was associated with the acceleration of bacterial clearance and the resolution of inflammation leading to the improvement of pulmonary injuries. By contrast, alkylglycerols did not affect the outcomes ofP. aeruginosainfection. Our findings suggest that supplementation with ray oil enriched in DHA/EPA (2:1) can be considered as a preventive treatment for patients at risk forP. aeruginosainfection.
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Shao Y, Cheng Z, Li X, Chernaya V, Wang H, Yang XF. Immunosuppressive/anti-inflammatory cytokines directly and indirectly inhibit endothelial dysfunction--a novel mechanism for maintaining vascular function. J Hematol Oncol 2014; 7:80. [PMID: 25387998 PMCID: PMC4236671 DOI: 10.1186/s13045-014-0080-6] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 10/13/2014] [Indexed: 12/14/2022] Open
Abstract
Endothelial dysfunction is a pathological status of the vascular system, which can be broadly defined as an imbalance between endothelium-dependent vasoconstriction and vasodilation. Endothelial dysfunction is a key event in the progression of many pathological processes including atherosclerosis, type II diabetes and hypertension. Previous reports have demonstrated that pro-inflammatory/immunoeffector cytokines significantly promote endothelial dysfunction while numerous novel anti-inflammatory/immunosuppressive cytokines have recently been identified such as interleukin (IL)-35. However, the effects of anti-inflammatory cytokines on endothelial dysfunction have received much less attention. In this analytical review, we focus on the recent progress attained in characterizing the direct and indirect effects of anti-inflammatory/immunosuppressive cytokines in the inhibition of endothelial dysfunction. Our analyses are not only limited to the importance of endothelial dysfunction in cardiovascular disease progression, but also expand into the molecular mechanisms and pathways underlying the inhibition of endothelial dysfunction by anti-inflammatory/immunosuppressive cytokines. Our review suggests that anti-inflammatory/immunosuppressive cytokines serve as novel therapeutic targets for inhibiting endothelial dysfunction, vascular inflammation and cardio- and cerebro-vascular diseases.
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Affiliation(s)
- Ying Shao
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Zhongjian Cheng
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Xinyuan Li
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Valeria Chernaya
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Hong Wang
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA.
| | - Xiao-feng Yang
- Department of Pharmacology, Center for Metabolic Disease Research and Cardiovascular Research Center, Temple University School of Medicine, MERB 1059, 3500 North Broad Street, Philadelphia, PA, 19140, USA. .,Department of Microbiology and Immunology, Temple University School of Medicine, Philadelphia, PA, 19140, USA.
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Caffeic Acid phenethyl ester: consequences of its hydrophobicity in the oxidative functions and cytokine release by leukocytes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:793629. [PMID: 25254058 PMCID: PMC4164378 DOI: 10.1155/2014/793629] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 07/23/2014] [Accepted: 07/24/2014] [Indexed: 12/02/2022]
Abstract
Numerous anti-inflammatory properties have been attributed to caffeic acid phenethyl ester (CAPE), an active component of propolis. NADPH oxidases are multienzymatic complexes involved in many inflammatory diseases. Here, we studied the importance of the CAPE hydrophobicity on cell-free antioxidant capacity, inhibition of the NADPH oxidase and hypochlorous acid production, and release of TNF-α and IL-10 by activated leukocytes. The comparison was made with the related, but less hydrophobic, caffeic and chlorogenic acids. Cell-free studies such as superoxide anion scavenging assay, triene degradation, and anodic peak potential (Epa) measurements showed that the alterations in the hydrophobicity did not provoke significant changes in the oxidation potential and antiradical potency of the tested compounds. However, only CAPE was able to inhibit the production of superoxide anion by activated leukocytes. The inhibition of the NADPH oxidase resulted in the blockage of production of hypochlorous acid. Similarly, CAPE was the more effective inhibitor of the release of TNF-α and IL-10 by Staphylococcus aureus stimulated cells. In conclusion, the presence of the catechol moiety and the higher hydrophobicity were essential for the biological effects. Considering the involvement of NADPH oxidases in the genesis and progression of inflammatory diseases, CAPE should be considered as a promising anti-inflammatory drug.
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Nistala R, Habibi J, Lastra G, Manrique C, Aroor AR, Hayden MR, Garro M, Meuth A, Johnson M, Whaley-Connell A, Sowers JR. Prevention of obesity-induced renal injury in male mice by DPP4 inhibition. Endocrinology 2014; 155:2266-76. [PMID: 24712875 PMCID: PMC4020930 DOI: 10.1210/en.2013-1920] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Therapies to prevent renal injury in obese hypertensive individuals are being actively sought due to the obesity epidemic arising from the Western diet (WD), which is high in fructose and fat. Recently, activation of the immune system and hyperuricemia, observed with high fructose intake, have been linked to the pathophysiology of hypertension and renal injury. Because dipeptidyl peptidase 4 (DPP4) is a driver of maladaptive T-cell/macrophage responses, renal-protective benefits of DPP4 inhibition in the WD-fed mice were examined. Mice fed a WD for 16 weeks were given the DPP4 inhibitor MK0626 in their diet beginning at 4 weeks of age. WD-fed mice were obese, hypertensive, and insulin-resistant and manifested proteinuria and increased plasma DPP4 activity and uric acid levels. WD-fed mice also had elevated kidney DPP4 activity and monocyte chemoattractant protein-1 and IL-12 levels and suppressed IL-10 levels in the kidney, suggesting macrophage-driven inflammation, glomerular and tubulointerstitial injury. WD-induced increases in DPP4 activation in the plasma and kidney and proteinuria in WD mice were abrogated by MK0626, although blood pressure and systemic insulin sensitivity were not improved. Contemporaneously, MK0626 reduced serum uric acid levels, renal oxidative stress, and IL-12 levels and increased IL-10 levels, suggesting that suppression of DPP4 activity leads to suppression of renal immune/inflammatory injury responses to a WD. Taken together, these results demonstrate that DPP4 inhibition prevents high-fructose/high-fat diet-induced glomerular and tubular injury independent of blood pressure/insulin sensitivity and offers a potentially novel therapy for diabetic and obesity-related kidney disease.
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Thymic stromal lymphopoietin mediates the host response and increases mortality during sepsis. J Surg Res 2014; 191:19-24. [PMID: 24990542 DOI: 10.1016/j.jss.2014.05.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 04/29/2014] [Accepted: 05/13/2014] [Indexed: 01/24/2023]
Abstract
BACKGROUND Sepsis and subsequent multiorgan system failure is associated with high rates of mortality and morbidity. Thymic stromal lymphopoietin (TSLP) is a cytokine that can be produced by keratinocytes and epithelial cells. Primarily, TSLP has been shown to promote counter-inflammatory processes. However, its potential expression or role in the pathogenesis of sepsis is largely unexplored. We hypothesized that TSLP is expressed during sepsis and TSLP blockade would alter the immune response and mortality. MATERIALS AND METHODS Mice underwent cecal ligation and puncture (CLP) to produce a physiologically relevant murine model for sepsis. Cohorts were either treated with neutralizing TSLP antibodies or isotype controls before the CLP to determine changes in survival, bacterial loads, cytokine levels, and neutrophil function. RESULTS It was observed that TSLP levels peaked at 6 h and remained detectable up to 48 h after CLP. Mice pretreated with neutralizing TSLP showed decreased mortality and bacterial load after CLP. Additionally, we determined that septic mice pretreated with the anti-TSLP antibody had increased tumor necrosis factor alpha and oxidative burst as well as increased interleukin 17 and neutrophil numbers compared with mice pretreated with isotype controls. CONCLUSIONS TSLP levels peak early but are sustained during the first 48 h of sepsis. We speculate that TSLP blunts the neutrophil response resulting in increased bacterial load and mortality.
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40
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Rao PSS, Ahmed S, Sari Y. Effects of ceftriaxone on systemic and central expression of anti- and pro-inflammatory cytokines in alcohol-preferring (P) rats exposed to ethanol. Alcohol Alcohol 2014; 49:390-8. [PMID: 24743029 DOI: 10.1093/alcalc/agu019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AIMS Determine the effect of reduction in ethanol consumption by alcohol-preferring (P) rats, following ceftriaxone treatment, on the cytokines levels in prefrontal cortex (PFC) and plasma. METHODS Following 5 weeks of free access to ethanol (15 and 30%), P rats were treated daily with ceftriaxone or saline vehicle for either 2 or 5 consecutive days. Plasma and PFC were collected from ceftriaxone- and saline vehicle-treated groups, and assayed for the levels of pro- and anti-inflammatory cytokines. RESULTS A significant increase in the plasma level of anti-inflammatory cytokine IL-10 was observed in the ceftriaxone-treated group when compared with the saline-treated group in both the 2-day and 5-day treatments. Furthermore, ceftriaxone treatment for 2 days induced reduction in TNFα level in both plasma and PFC. Additionally, ceftriaxone treatment for 2 days significantly reduced the IFNγ level in PFC. CONCLUSION These findings show the ability of ceftriaxone to reduce alcohol consumption and induce modulation of the anti-inflammatory and pro-inflammatory cytokines levels in P rats.
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Affiliation(s)
- P S S Rao
- Department of Pharmacology, University of Toledo, College of Pharmacy and Pharmaceutical Sciences, Toledo, OH, USA
| | - S Ahmed
- Department of Pharmacology, University of Toledo, College of Pharmacy and Pharmaceutical Sciences, Toledo, OH, USA
| | - Y Sari
- Department of Pharmacology, University of Toledo, College of Pharmacy and Pharmaceutical Sciences, Toledo, OH, USA
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Bréchard S, Plançon S, Tschirhart EJ. New insights into the regulation of neutrophil NADPH oxidase activity in the phagosome: a focus on the role of lipid and Ca(2+) signaling. Antioxid Redox Signal 2013; 18:661-76. [PMID: 22867131 PMCID: PMC3549206 DOI: 10.1089/ars.2012.4773] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
SIGNIFICANCE Reactive oxygen species, produced by the phagosomal NADPH oxidase of neutrophils, play a significant physiological role during normal defense. Their role is not only to kill invading pathogens, but also to act as modulators of global physiological functions of phagosomes. Given the importance of NADPH oxidase in the immune system, its activity has to be decisively controlled by distinctive mechanisms to ensure appropriate regulation at the phagosome. RECENT ADVANCES Here, we describe the signal transduction pathways that regulate phagosomal NADPH oxidase in neutrophils, with an emphasis on the role of lipid metabolism and intracellular Ca(2+) mobilization. CRITICAL ISSUES The potential involvement of Ca(2+)-binding S100A8 and S100A9 proteins, known to interact with the plasma membrane NADPH oxidase, is also considered. FUTURE DIRECTIONS Recent technical progress in advanced live imaging microscopy will permit to focus more accurately on phagosomal rather than plasma membrane NADPH oxidase regulation during neutrophil phagocytosis.
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Affiliation(s)
- Sabrina Bréchard
- Calcium Signaling and Inflammation Group, Life Sciences Research Unit, University of Luxembourg, Luxembourg, Luxembourg
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Saitoh T, Komano J, Saitoh Y, Misawa T, Takahama M, Kozaki T, Uehata T, Iwasaki H, Omori H, Yamaoka S, Yamamoto N, Akira S. Neutrophil extracellular traps mediate a host defense response to human immunodeficiency virus-1. Cell Host Microbe 2013; 12:109-16. [PMID: 22817992 DOI: 10.1016/j.chom.2012.05.015] [Citation(s) in RCA: 495] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 01/27/2012] [Accepted: 05/18/2012] [Indexed: 12/12/2022]
Abstract
Neutrophils contribute to pathogen clearance by producing neutrophil extracellular traps (NETs), which are genomic DNA-based net-like structures that capture bacteria and fungi. Although NETs also express antiviral factors, such as myeloperoxidase and α-defensin, the involvement of NETs in antiviral responses remains unclear. We show that NETs capture human immunodeficiency virus (HIV)-1 and promote HIV-1 elimination through myeloperoxidase and α-defensin. Neutrophils detect HIV-1 by Toll-like receptors (TLRs) TLR7 and TLR8, which recognize viral nucleic acids. Engagement of TLR7 and TLR8 induces the generation of reactive oxygen species that trigger NET formation, leading to NET-dependent HIV-1 elimination. However, HIV-1 counteracts this response by inducing C-type lectin CD209-dependent production of interleukin (IL)-10 by dendritic cells to inhibit NET formation. IL-10 suppresses the reactive oxygen species-dependent generation of NETs induced upon TLR7 and TLR8 engagement, resulting in disrupted NET-dependent HIV-1 elimination. Therefore, NET formation is an antiviral response that is counteracted by HIV-1.
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Affiliation(s)
- Tatsuya Saitoh
- Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
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Liu T, Xiao N, Liu Y, Wilson B, Li J, Wang Y, Cao X, Liu Z. The anti-inflammatory effects of ethyl acetate on Lipopolysaccharide/D-galactosamine challenged mice and Lipopolysaccharide activated RAW264.7 cells. Biochem Biophys Res Commun 2012; 427:518-24. [DOI: 10.1016/j.bbrc.2012.09.088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 09/15/2012] [Indexed: 12/20/2022]
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Chedid P, Hurtado-Nedelec M, Marion-Gaber B, Bournier O, Hayem G, Gougerot-Pocidalo MA, Frystyk J, Flyvbjerg A, El Benna J, Marie JC. Adiponectin and its globular fragment differentially modulate the oxidative burst of primary human phagocytes. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 180:682-92. [PMID: 22119038 DOI: 10.1016/j.ajpath.2011.10.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 10/05/2011] [Accepted: 10/11/2011] [Indexed: 02/06/2023]
Abstract
Adiponectin (Acrp30) belongs to the family of C1q/tumor necrosis factor α (TNFα)-related proteins. Acrp30 circulates as multimers of high, middle, and low molecular weight. In this study, we detected Acrp30 and its globular fragment (gAcrp30) in synovial fluid from rheumatoid arthritis patients. Intriguingly, the LMW form was more abundant in synovial fluid than in serum from both rheumatoid arthritis patients and healthy subjects. We also investigated the effects of Acrp30 and gAcrp30 on reactive oxygen species (ROS) production via the phagocytic NADPH oxidase. Acrp30 inhibited fMLF-induced ROS production by human phagocytes, whereas gAcrp30 enhanced it. gAcrp30's effect is additive with TNFα, whereas Acrp30 inhibited TNFα-induced priming. gAcrp30 enhanced NOX-2 expression at the plasma membrane, with a concomitant increase in p47(phox) phosphorylation. Selective inhibitors of p38 mitogen-activated protein kinase (MAPK) and extracellular signal-regulated kinase 1 (ERK1)/2 abrogated p47(phox) phosphorylation by gAcrp30. In contrast, p47(phox) phosphorylation was inhibited by Acrp30 in association with increased AMP-activated protein kinase (AMPK) phosphorylation in phagocytes. These results suggest that human phagocyte ROS production is regulated by different mechanisms selective for Acrp30 versus gAcrp30. An imbalance between gAcrp30 and higher molecular weight isoforms of Acrp30 might contribute to chronic inflammation by regulating NADPH oxidase.
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Park MT, Song MJ, Lee H, Oh ET, Choi BH, Jeong SY, Choi EK, Park HJ. β-lapachone significantly increases the effect of ionizing radiation to cause mitochondrial apoptosis via JNK activation in cancer cells. PLoS One 2011; 6:e25976. [PMID: 21998736 PMCID: PMC3188568 DOI: 10.1371/journal.pone.0025976] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 09/14/2011] [Indexed: 01/09/2023] Open
Abstract
Background β-lapachone (β-lap), has been known to cause NQO1-dependnet death in cancer cells and sensitize cancer cells to ionizing radiation (IR). We investigated the mechanisms underlying the radiosensitization caused by β-lap. Methodology/Principal Findings β-lap enhanced the effect of IR to cause clonogenic cells in NQO1+-MDA-MB-231 cells but not in NQO1−-MDA-MB-231 cells. β-lap caused apoptosis only in NQO1+ cells and not in NQO1− cells and it markedly increased IR-induced apoptosis only in NQO1+ cells. Combined treatment of NQO1+ cells induced ROS generation, triggered ER stress and stimulated activation of ERK and JNK. Inhibition of ROS generation by NAC effectively attenuated the activation of ERK and JNK, induction of ER stress, and subsequent apoptosis. Importantly, inhibition of ERK abolished ROS generation and ER stress, whereas inhibition of JNK did not, indicating that positive feedback regulation between ERK activation and ROS generation triggers ER stress in response to combined treatment. Furthermore, prevention of ER stress completely blocked combination treatment-induced JNK activation and subsequent apoptotic cell death. In addition, combined treatment efficiently induced the mitochondrial translocation of cleaved Bax, disrupted mitochondrial membrane potential, and the nuclear translocation of AIF, all of which were efficiently blocked by a JNK inhibitor. Caspases 3, 8 and 9 were activated by combined treatment but inhibition of these caspases did not abolish apoptosis indicating caspase activation played a minor role in the induction of apoptosis. Conclusions/Significance β-lap causes NQO1-dependent radiosensitization of cancer cells. When NQO1+ cells are treated with combination of IR and β-lap, positive feedback regulation between ERK and ROS leads to ER stress causing JNK activation and mitochondrial translocation of cleaved Bax. The resultant decrease in mitochondrial membrane leads to translocation of AIF and apoptosis.
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Affiliation(s)
- Moon-Taek Park
- Department of Microbiology, Center for Advanced Medical Education by BK21 Project, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Min-Jeong Song
- Department of Microbiology, Center for Advanced Medical Education by BK21 Project, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Hyemi Lee
- Department of Microbiology, Center for Advanced Medical Education by BK21 Project, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Eun-Taex Oh
- Department of Microbiology, Center for Advanced Medical Education by BK21 Project, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Bo-Hwa Choi
- Department of Microbiology, Center for Advanced Medical Education by BK21 Project, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Seong-Yun Jeong
- Department of Radiation Oncology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
| | - Eun-Kyung Choi
- Department of Radiation Oncology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
| | - Heon Joo Park
- Department of Microbiology, Center for Advanced Medical Education by BK21 Project, College of Medicine, Inha University, Incheon, Republic of Korea
- * E-mail:
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Abstract
Survival during sepsis requires both swift control of infectious organisms and tight regulation of the associated inflammatory response. As the role of T cells in sepsis is somewhat controversial, we examined the impact of increasing antigen-dependent activation of CD4 T cells in a murine model of cecal ligation and puncture using T-cell receptor transgenic II (OT-II) mice that are specific for chicken ovalbumin (OVA) in the context of major histocompatibility complex II. Here, we injected OT-II mice with 0, 1, or 100 μg of OVA and demonstrate that increased antigen treatment resulted in increased numbers of activated splenic CD4 T cells. Vehicle-treated, septic OT-II mice had decreased survival, increased bacterial load, and increased levels of IL-6. Interestingly, this decrease in survival was abrogated when OT-II mice were injected with 1 μg OVA, which was correlated with normalized bacterial load and levels of IL-6. However, when OT-II mice were injected with 100 μg OVA, decreased survival was restored but, in contrast to vehicle-treated OT-II mice, had decreased bacterial load and enhanced IL-6 levels. We also observed that neutrophil oxidative burst and phagocytosis were dependent on CD4 T-cell activation. Further, at extreme levels of T-cell activation, intestinal permeability was significantly increased. Altogether, we conclude that too little CD4 T-cell activation produces dysfunctional neutrophils leading to decreased bacteria clearance and survival, whereas too much CD4 T-cell activation produces a neutrophil phenotype that leads to efficient bacterial clearance but with increased tissue damage and mortality.
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MUÑOZ-ORTEGA M, QUINTANAR-STEPHANO A, GARCÍA LORENZANA M, CAMPOS-ESPARZA MR, SILVA-BRIANO M, ADABACHE-ORTÍZ A, CAMPOS-RODRÍGUEZ R, RODRÍGUEZ MG, VENTURA-JUÁREZ J. Modulation of amoebic hepatic abscess by the parasympathetic system. Parasite Immunol 2010; 33:65-72. [DOI: 10.1111/j.1365-3024.2010.01245.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Roles of NADPH oxidases in cisplatin-induced reactive oxygen species generation and ototoxicity. J Neurosci 2010; 30:3933-46. [PMID: 20237264 DOI: 10.1523/jneurosci.6054-09.2010] [Citation(s) in RCA: 212] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
In our previous study, we clearly demonstrated the roles of pro-inflammatory cytokines, including tumor necrosis factor-alpha, interleukin-1beta (IL-1beta), and IL-6, and subsequent reactive oxygen species (ROS) generation on the pathogenesis of cisplatin ototoxicity in vitro and in vivo. ROS generation in cisplatin-treated HEI-OC1 auditory cells was also correlated with changing mitochondrial membrane potential. However, the roles of NADPH oxidase in cisplatin-induced ROS generation and ototoxicity have not been fully elucidated. Herein, immunohistochemical studies demonstrated that treatment of cisplatin induced the expression of NADPH oxidase isoforms NOX-1 and NOX-4 in HEI-OC1 auditory cells. Expression of mRNA for NOX-1, NOX-4, NOXO1, NOXA1, p47(phox), and p67(phox) was also increased. Inhibition of NADPH oxidase with diphenyleniodonium chloride or apocynin abolished ROS production and the subsequent apoptotic cell death in cisplatin-treated cells. Furthermore, suppression of NOX1 and NOX4 expression by small interfering RNA transfection markedly abolished the cytotoxicity and ROS generation by cisplatin. Together, our data suggest that ROS generated, in part, through the activation of NADPH oxidase plays an essential role in cisplatin ototoxicity.
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Huang TC, Lin YT, Chuang KP. Carvacrol has the priming effects of reactive oxygen species (ROS) production in C6 glioma cells. FOOD AGR IMMUNOL 2010. [DOI: 10.1080/09540100903418842] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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