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Henley K, Tresselt E, Hook JS, Patel PA, Gill MA, Moreland JG. Granular Insights: Neutrophil Predominance and Elastase Release in Severe Asthma Exacerbations in a Pediatric Cohort. Cells 2024; 13:533. [PMID: 38534377 DOI: 10.3390/cells13060533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/07/2024] [Accepted: 03/11/2024] [Indexed: 03/28/2024] Open
Abstract
The chronic inflammatory component of asthma is propagated by granulocytes, including neutrophils and eosinophils, in the peripheral circulation and airway. Previous studies have suggested that these cells have an altered expression of adhesion-related molecules and a propensity for the release of granule contents that may contribute to tissue damage and enhance inflammatory complications in patients with status asthmaticus. The goal of this prospective cohort study at a tertiary care pediatric hospital with a large population of asthma patients was to assess the role of granulocyte-based inflammation in the development of asthma exacerbation. Subjects were enrolled from two patient populations: those with mild-to-moderate asthma exacerbations seen in the emergency department and those with severe asthma admitted to the intensive care unit (PICU). Clinical data were collected, and blood was drawn. Granulocytes were immediately purified, and the phenotype was assessed, including the expression of cell surface markers, elastase release, and cytokine production. Severe asthmatics admitted to the PICU displayed a significantly higher total neutrophil count when compared with healthy donors. Moreover, little to no eosinophils were found in granulocyte preparations from severe asthmatics. Circulating neutrophils from severe asthmatics admitted to the PICU displayed significantly increased elastase release ex vivo when compared with the PMN from healthy donors. These data suggest that the neutrophil-based activation and release of inflammatory products displayed by severe asthmatics may contribute to the propagation of asthma exacerbations.
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Affiliation(s)
- Kirstin Henley
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Erin Tresselt
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jessica S Hook
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Parth A Patel
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Michelle A Gill
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jessica G Moreland
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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2
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Yan Q, Jia S, Li D, Yang J. The role and mechanism of action of microbiota-derived short-chain fatty acids in neutrophils: From the activation to becoming potential biomarkers. Biomed Pharmacother 2023; 169:115821. [PMID: 37952355 DOI: 10.1016/j.biopha.2023.115821] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023] Open
Abstract
Short-chain fatty acids (SCFAs), such as acetate, propionate, and butyrate, have emerged as critical mediators in the communication between the human microbiota and its host. As the first responder to the inflammatory site, neutrophils play an important role in protecting the host against bacterial infections. Recent investigations revealed that SCFAs generated from microbiota influence various neutrophil activities, including activation, migration, and generation of mediators of inflammatory processes. SCFAs have also been demonstrated to exhibit potential therapeutic benefits in a variety of disorders related to neutrophil dysfunction, including inflammatory bowel disease, viral infectious disorders, and cancer. This study aims to examine the molecular processes behind the complicated link between SCFAs and neutrophils, as well as their influence on neutrophil-driven inflammatory disorders. In addition, we will also provide an in-depth review of current research on the diagnostic and therapeutic value of SCFAs as possible biomarkers for neutrophil-related diseases.
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Affiliation(s)
- Qingzhu Yan
- Department of Ultrasound Medicine, the Second Hospital of Jilin University, Changchun 130000, China
| | - Shengnan Jia
- Digestive Diseases Center, Department of Hepatopancreatobiliary Medicine, the Second Hospital of Jilin University, Changchun 130000, China
| | - Dongfu Li
- Digestive Diseases Center, Department of Hepatopancreatobiliary Medicine, the Second Hospital of Jilin University, Changchun 130000, China.
| | - Junling Yang
- Department of Respiratory Medicine, the Second Hospital of Jilin University, Changchun 130000, China.
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3
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Zhang Y, Ranaei Pirmardan E, Jiang H, Barakat A, Hafezi-Moghadam A. VEGFR-2 adhesive nanoprobes reveal early diabetic retinopathy in vivo. Biosens Bioelectron 2023; 237:115476. [PMID: 37437454 DOI: 10.1016/j.bios.2023.115476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 07/14/2023]
Abstract
Diabetic retinopathy (DR) is a debilitating organ manifestation of diabetes. Absent of early diagnosis and intervention, vision tends to drastically and irreversibly decline. Previously, we showed higher vascular endothelial growth factor receptor 2 (VEGFR-2) expression in diabetic microvessels, and the suitability of this molecule as a biomarker for early DR diagnosis. However, a hurdle to translation remained generation of biodegradable nanoprobes that are sufficiently bright for in vivo detection. Here, an adhesive fluorescent nanoprobe with high brightness was developed using biodegradable materials. To achieve that, a fluorophore with bulky hydrophobic groups was encapsulated in the nanoparticles to minimize fluorophore π-π stacking, which diminishes brightness at higher loading contents. The nanoprobe selectively targeted the VEGFR-2 under dynamic flow conditions. Upon systemic injection, the nanoprobes adhered in the retinal microvessels of diabetic mice and were visualized as bright spots in live retinal microscopy. Histology validated the in vivo results and showed binding of the nanoprobes to the microvascular endothelium and firmly adhering leukocytes. Leukocytes were found laden with nanoprobes, indicating the potential for payload transport across the blood-retinal barrier. Our results establish the translational potential of these newly generated nanoprobes in early diagnosis of DR.
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Affiliation(s)
- Yuanlin Zhang
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital, and Department of Radiology, Harvard Medical School, Boston, MA, USA
| | - Ehsan Ranaei Pirmardan
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital, and Department of Radiology, Harvard Medical School, Boston, MA, USA
| | - Hua Jiang
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital, and Department of Radiology, Harvard Medical School, Boston, MA, USA
| | - Aliaa Barakat
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital, and Department of Radiology, Harvard Medical School, Boston, MA, USA
| | - Ali Hafezi-Moghadam
- Molecular Biomarkers Nano-Imaging Laboratory, Brigham and Women's Hospital, and Department of Radiology, Harvard Medical School, Boston, MA, USA.
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Chalise U, Becirovic‐Agic M, Lindsey ML. The cardiac wound healing response to myocardial infarction. WIREs Mech Dis 2023; 15:e1584. [PMID: 36634913 PMCID: PMC10077990 DOI: 10.1002/wsbm.1584] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/31/2022] [Accepted: 05/18/2022] [Indexed: 01/14/2023]
Abstract
Myocardial infarction (MI) is defined as evidence of myocardial necrosis consistent with prolonged ischemia. In response to MI, the myocardium undergoes a series of wound healing events that initiate inflammation and shift to anti-inflammation before transitioning to tissue repair that culminates in scar formation to replace the region of the necrotic myocardium. The overall response to MI is determined by two major steps, the first of which is the secretion of proteases by infiltrating leukocytes to breakdown extracellular matrix (ECM) components, a necessary step to remove necrotic cardiomyocytes. The second step is the generation of new ECM that comprises the scar; and this step is governed by the cardiac fibroblasts as the major source of new ECM synthesis. The leukocyte component resides in the middle of the two-step process, contributing to both sides as the leukocytes transition from pro-inflammatory to anti-inflammatory and reparative cell phenotypes. The balance between the two steps determines the final quantity and quality of scar formed, which in turn contributes to chronic outcomes following MI, including the progression to heart failure. This review will summarize our current knowledge regarding the cardiac wound healing response to MI, primarily focused on experimental models of MI in mice. This article is categorized under: Cardiovascular Diseases > Molecular and Cellular Physiology Immune System Diseases > Molecular and Cellular Physiology.
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Affiliation(s)
- Upendra Chalise
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular ResearchUniversity of Nebraska Medical CenterOmahaNebraskaUSA
- Research ServiceNebraska‐Western Iowa Health Care SystemOmahaNebraskaUSA
| | - Mediha Becirovic‐Agic
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular ResearchUniversity of Nebraska Medical CenterOmahaNebraskaUSA
- Research ServiceNebraska‐Western Iowa Health Care SystemOmahaNebraskaUSA
| | - Merry L. Lindsey
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular ResearchUniversity of Nebraska Medical CenterOmahaNebraskaUSA
- Research ServiceNebraska‐Western Iowa Health Care SystemOmahaNebraskaUSA
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5
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Mansouri M, Ahmed A, Ahmad SD, McCloskey MC, Joshi IM, Gaborski TR, Waugh RE, McGrath JL, Day SW, Abhyankar VV. The Modular µSiM Reconfigured: Integration of Microfluidic Capabilities to Study In Vitro Barrier Tissue Models under Flow. Adv Healthc Mater 2022; 11:e2200802. [PMID: 35953453 PMCID: PMC9798530 DOI: 10.1002/adhm.202200802] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/01/2022] [Indexed: 01/28/2023]
Abstract
Microfluidic tissue barrier models have emerged to address the lack of physiological fluid flow in conventional "open-well" Transwell-like devices. However, microfluidic techniques have not achieved widespread usage in bioscience laboratories because they are not fully compatible with traditional experimental protocols. To advance barrier tissue research, there is a need for a platform that combines the key advantages of both conventional open-well and microfluidic systems. Here, a plug-and-play flow module is developed to introduce on-demand microfluidic flow capabilities to an open-well device that features a nanoporous membrane and live-cell imaging capabilities. The magnetic latching assembly of this design enables bi-directional reconfiguration and allows users to conduct an experiment in an open-well format with established protocols and then add or remove microfluidic capabilities as desired. This work also provides an experimentally-validated flow model to select flow conditions based on the experimental needs. As a proof-of-concept, flow-induced alignment of endothelial cells and the expression of shear-sensitive gene targets are demonstrated, and the different phases of neutrophil transmigration across a chemically stimulated endothelial monolayer under flow conditions are visualized. With these experimental capabilities, it is anticipated that both engineering and bioscience laboratories will adopt this reconfigurable design due to the compatibility with standard open-well protocols.
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Affiliation(s)
- Mehran Mansouri
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Adeel Ahmed
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - S. Danial Ahmad
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - Molly C. McCloskey
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - Indranil M. Joshi
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Thomas R. Gaborski
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Richard E. Waugh
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - James L. McGrath
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, 14627, USA
| | - Steven W. Day
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
| | - Vinay V. Abhyankar
- Department of Biomedical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, USA
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6
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Qu H, Khalil RA. Role of ADAM and ADAMTS Disintegrin and Metalloproteinases in Normal Pregnancy and Preeclampsia. Biochem Pharmacol 2022; 206:115266. [PMID: 36191626 DOI: 10.1016/j.bcp.2022.115266] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022]
Abstract
Normal pregnancy (NP) involves intricate processes starting with egg fertilization, proceeding to embryo implantation, placentation and gestation, and culminating in parturition. These pregnancy-related processes require marked uteroplacental and vascular remodeling by proteolytic enzymes and metalloproteinases. A disintegrin and metalloproteinase (ADAM) and ADAM with thrombospondin motifs (ADAMTS) are members of the zinc-dependent family of proteinases with highly conserved protein structure and sequence homology, which include a pro-domain, and a metalloproteinase, disintegrin and cysteine-rich domain. In NP, ADAMs and ADAMTS regulate sperm-egg fusion, embryo implantation, trophoblast invasion, placental angiogenesis and spiral arteries remodeling through their ectodomain proteolysis of cell surface cytokines, cadherins and growth factors as well as their adhesion with integrins and cell-cell junction proteins. Preeclampsia (PE) is a serious complication of pregnancy characterized by new-onset hypertension (HTN) in pregnancy (HTN-Preg) at or after 20 weeks of gestation, with or without proteinuria. Insufficient trophoblast invasion of the uterine wall, inadequate expansive remodeling of the spiral arteries, reduced uteroplacental perfusion pressure, and placental ischemia/hypoxia are major initiating events in the pathogenesis of PE. Placental ischemia/hypoxia increase the release of reactive oxygen species (ROS), which lead to aberrant expression/activity of certain ADAMs and ADAMTS. In PE, abnormal expression/activity of specific ADAMs and ADAMTS that function as proteolytic sheddases could alter proangiogenic and growth factors, and promote the release of antiangiogenic factors and inflammatory cytokines into the placenta and maternal circulation leading to generalized inflammation, endothelial cell injury and HTN-Preg, renal injury and proteinuria, and further decreases in uteroplacental blood flow, exaggeration of placental ischemia, and consequently fetal growth restriction. Identifying the role of ADAMs and ADAMTS in NP and PE has led to a better understanding of the underlying molecular and vascular pathways, and advanced the potential for novel biomarkers for prediction and early detection, and new approaches for the management of PE.
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Affiliation(s)
- Hongmei Qu
- Vascular Surgery Research Laboratories, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA
| | - Raouf A Khalil
- Vascular Surgery Research Laboratories, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA.
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Ou Z, Dolmatova E, Mandavilli R, Qu H, Gafford G, White T, Valdivia A, Lassègue B, Hernandes MS, Griendling KK. Myeloid Poldip2 Contributes to the Development of Pulmonary Inflammation by Regulating Neutrophil Adhesion in a Murine Model of Acute Respiratory Distress Syndrome. J Am Heart Assoc 2022; 11:e025181. [PMID: 35535614 PMCID: PMC9238549 DOI: 10.1161/jaha.121.025181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Background Lung injury, a severe adverse outcome of lipopolysaccharide-induced acute respiratory distress syndrome, is attributed to excessive neutrophil recruitment and effector response. Poldip2 (polymerase δ-interacting protein 2) plays a critical role in regulating endothelial permeability and leukocyte recruitment in acute inflammation. Thus, we hypothesized that myeloid Poldip2 is involved in neutrophil recruitment to inflamed lungs. Methods and Results After characterizing myeloid-specific Poldip2 knockout mice, we showed that at 18 hours post-lipopolysaccharide injection, bronchoalveolar lavage from myeloid Poldip2-deficient mice contained fewer inflammatory cells (8 [4-16] versus 29 [12-57]×104/mL in wild-type mice) and a smaller percentage of neutrophils (30% [28%-34%] versus 38% [33%-41%] in wild-type mice), while the main chemoattractants for neutrophils remained unaffected. In vitro, Poldip2-deficient neutrophils responded as well as wild-type neutrophils to inflammatory stimuli with respect to neutrophil extracellular trap formation, reactive oxygen species production, and induction of cytokines. However, neutrophil adherence to a tumor necrosis factor-α stimulated endothelial monolayer was inhibited by Poldip2 depletion (225 [115-272] wild-type [myePoldip2+/+] versus 133 [62-178] myeloid-specific Poldip2 knockout [myePoldip2-/-] neutrophils) as was transmigration (1.7 [1.3-2.1] versus 1.1 [1.0-1.4] relative to baseline transmigration). To determine the underlying mechanism, we examined the surface expression of β2-integrin, its binding to soluble intercellular adhesion molecule 1, and Pyk2 phosphorylation. Surface expression of β2-integrins was not affected by Poldip2 deletion, whereas β2-integrins and Pyk2 were less activated in Poldip2-deficient neutrophils. Conclusions These results suggest that myeloid Poldip2 is involved in β2-integrin activation during the inflammatory response, which in turn mediates neutrophil-to-endothelium adhesion in lipopolysaccharide-induced acute respiratory distress syndrome.
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Affiliation(s)
- Ziwei Ou
- Division of Cardiology Department of Medicine Emory University Atlanta GA.,Department of Cardiovascular Medicine Xiangya HospitalCentral South University Changsha China
| | - Elena Dolmatova
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Rohan Mandavilli
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Hongyan Qu
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Georgette Gafford
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Taylor White
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Alejandra Valdivia
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Bernard Lassègue
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Marina S Hernandes
- Division of Cardiology Department of Medicine Emory University Atlanta GA
| | - Kathy K Griendling
- Division of Cardiology Department of Medicine Emory University Atlanta GA
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Kraus RF, Gruber MA. Neutrophils-From Bone Marrow to First-Line Defense of the Innate Immune System. Front Immunol 2022; 12:767175. [PMID: 35003081 PMCID: PMC8732951 DOI: 10.3389/fimmu.2021.767175] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/03/2021] [Indexed: 12/16/2022] Open
Abstract
Neutrophils (polymorphonuclear cells; PMNs) form a first line of defense against pathogens and are therefore an important component of the innate immune response. As a result of poorly controlled activation, however, PMNs can also mediate tissue damage in numerous diseases, often by increasing tissue inflammation and injury. According to current knowledge, PMNs are not only part of the pathogenesis of infectious and autoimmune diseases but also of conditions with disturbed tissue homeostasis such as trauma and shock. Scientific advances in the past two decades have changed the role of neutrophils from that of solely immune defense cells to cells that are responsible for the general integrity of the body, even in the absence of pathogens. To better understand PMN function in the human organism, our review outlines the role of PMNs within the innate immune system. This review provides an overview of the migration of PMNs from the vascular compartment to the target tissue as well as their chemotactic processes and illuminates crucial neutrophil immune properties at the site of the lesion. The review is focused on the formation of chemotactic gradients in interaction with the extracellular matrix (ECM) and the influence of the ECM on PMN function. In addition, our review summarizes current knowledge about the phenomenon of bidirectional and reverse PMN migration, neutrophil microtubules, and the microtubule organizing center in PMN migration. As a conclusive feature, we review and discuss new findings about neutrophil behavior in cancer environment and tumor tissue.
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Affiliation(s)
- Richard Felix Kraus
- Department of Anesthesiology, University Medical Center Regensburg, Regensburg, Germany
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9
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Reed SG, Ager A. Immune Responses to IAV Infection and the Roles of L-Selectin and ADAM17 in Lymphocyte Homing. Pathogens 2022; 11:pathogens11020150. [PMID: 35215094 PMCID: PMC8878872 DOI: 10.3390/pathogens11020150] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/14/2022] [Accepted: 01/21/2022] [Indexed: 02/04/2023] Open
Abstract
Influenza A virus (IAV) infection is a global public health burden causing up to 650,000 deaths per year. Yearly vaccination programmes and anti-viral drugs currently have limited benefits; therefore, research into IAV is fundamental. Leukocyte trafficking is a crucial process which orchestrates the immune response to infection to protect the host. It involves several homing molecules and receptors on both blood vessels and leukocytes. A key mediator of this process is the transmembrane glycoprotein L-selectin, which binds to vascular addressins on blood vessel endothelial cells. L-selectin classically mediates homing of naïve and central memory lymphocytes to lymph nodes via high endothelial venules (HEVs). Recent studies have found that L-selectin is essential for homing of activated CD8+ T cells to influenza-infected lungs and reduction in virus load. A disintegrin and metalloproteinase 17 (ADAM17) is the primary regulator of cell surface levels of L-selectin. Understanding the mechanisms that regulate these two proteins are central to comprehending recruitment of T cells to sites of IAV infection. This review summarises the immune response to IAV infection in humans and mice and discusses the roles of L-selectin and ADAM17 in T lymphocyte homing during IAV infection.
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Affiliation(s)
| | - Ann Ager
- Correspondence: (S.G.R.); (A.A.)
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10
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Chalise U, Becirovic-Agic M, Lindsey ML. Neutrophil crosstalk during cardiac wound healing after myocardial infarction. CURRENT OPINION IN PHYSIOLOGY 2021; 24:100485. [PMID: 35664861 PMCID: PMC9159545 DOI: 10.1016/j.cophys.2022.100485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Myocardial infarction (MI) initiates an intense inflammatory response that induces neutrophil infiltration into the infarct region. Neutrophils commence the pro-inflammatory response that includes upregulation of cytokines and chemokines (e.g., interleukin-1 beta) and degranulation of pre-formed proteases (e.g., matrix metalloproteinases -8 and -9) that degrade existing extracellular matrix to clear necrotic tissue. An increase or complete depletion of neutrophils both paradoxically impair MI resolution, indicating a complex role of neutrophils in cardiac wound healing. Following pro-inflammation, the neutrophil shifts to a reparative phenotype that promotes inflammation resolution and aids in scar formation. Across the shifts in phenotype, the neutrophil communicates with other cells to coordinate repair and scar formation. This review summarizes our current understanding of neutrophil crosstalk with cardiomyocytes and macrophages during MI wound healing.
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Affiliation(s)
- Upendra Chalise
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198; and Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68105
| | - Mediha Becirovic-Agic
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198; and Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68105
| | - Merry L. Lindsey
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, NE 68198; and Research Service, Nebraska-Western Iowa Health Care System, Omaha, NE 68105
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Vishnevskiy DA, Garanina AS, Chernysheva AA, Chekhonin VP, Naumenko VA. Neutrophil and Nanoparticles Delivery to Tumor: Is It Going to Carry That Weight? Adv Healthc Mater 2021; 10:e2002071. [PMID: 33734620 DOI: 10.1002/adhm.202002071] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/02/2021] [Indexed: 12/15/2022]
Abstract
The application of cell carriers for transporting nanodrugs to the tumor draws much attention as the alternative to the passive drug delivery. In this concept, the neutrophil (NΦ) is of special interest as this cell is able to uptake nanoparticles (NPs) and cross the vascular barrier in response to tumor signaling. There is a growing body of literature describing NP-NΦ interactions in vitro and in vivo that demonstrates the opportunity of using these cells to improve the efficacy of cancer therapy. However, a number of conceptual and technical issues need to be resolved for translating the technology into clinics. The current review summarizes the recent advances and challenges associated with NP-NΦ interactions, with the special focus on the complex interplay between the NP internalization pathways and the modulation of NΦ activity, and its potential consequences for nanodrug delivery.
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Affiliation(s)
- Daniil A. Vishnevskiy
- V. Serbsky National Medical Research Center for Psychiatry and Narcology Kropotkinskiy Pereulok, 23 Moscow 119034 Russia
- N. I Pirogov Russian National Research Medical University Ulitsa Ostrovityanova, 1 Moscow 117997 Russia
| | - Anastasiia S. Garanina
- National University of Science and Technology (MISIS) Leninskiy Prospekt, 4 Moscow 119049 Russia
| | - Anastasia A. Chernysheva
- V. Serbsky National Medical Research Center for Psychiatry and Narcology Kropotkinskiy Pereulok, 23 Moscow 119034 Russia
| | - Vladimir P. Chekhonin
- V. Serbsky National Medical Research Center for Psychiatry and Narcology Kropotkinskiy Pereulok, 23 Moscow 119034 Russia
- N. I Pirogov Russian National Research Medical University Ulitsa Ostrovityanova, 1 Moscow 117997 Russia
| | - Victor A. Naumenko
- V. Serbsky National Medical Research Center for Psychiatry and Narcology Kropotkinskiy Pereulok, 23 Moscow 119034 Russia
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12
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T cell-depleted cultured pediatric thymus tissue as a model for some aspects of human age-related thymus involution. GeroScience 2021; 43:1369-1382. [PMID: 33420705 DOI: 10.1007/s11357-020-00301-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/16/2020] [Indexed: 10/22/2022] Open
Abstract
Human age-related thymus involution is characterized by loss of developing thymocytes and the thymic epithelial network that supports them, with replacement by adipose tissue. The mechanisms that drive these changes are difficult to study in vivo due to constant trafficking to and from the thymus. We hypothesized that the loss of thymocytes that occurs during human thymic organ cultures could model some aspects of thymus involution and begin to identify mechanisms that drive age-related changes in the thymic microenvironment. Potential mechanistically important candidate molecules were initially identified by screening conditioned media from human thymus organ cultures using antibody microarrays. These candidates were further validated using cultured tissue extracts and conditioned media. Results were compared with gene expression studies from a panel of well-characterized (non-cultured) human thymus tissues from human donors aged 5 days to 78 years. L-selectin released into conditioned media was identified as a biomarker for the content of viable thymocytes within the cultured thymus. Levels of the chemokines CCL21 and CXCL12, likely produced by surviving thymic epithelial cells, increased markedly in conditioned media as thymocytes were lost during culture. Native non-cultured thymus from adults older than 18 years also showed a strong trend toward increased CCL21 expression, in conjunction with significant decreases in thymocyte-related mRNAs compared with thymus from subjects younger than 18 years. Together, these findings demonstrate that use of postnatal human thymus organ cultures can model some aspects of human age-related thymic involution.
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Sun W, Wang S, Zhang J, Arias K, Griffith BP, Wu ZJ. Neutrophil injury and function alterations induced by high mechanical shear stress with short exposure time. Artif Organs 2020; 45:577-586. [PMID: 33237583 DOI: 10.1111/aor.13874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/09/2020] [Accepted: 11/17/2020] [Indexed: 12/15/2022]
Abstract
High mechanical shear stresses (HMSS) can cause damage to blood, which manifests as morphologic changes, shortened life span, biochemical alterations, and complete rupture of blood cells and proteins, leading to the alterations of normal blood function. The aim of this study is to determine the state of neutrophil activation and function alterations caused by HMSS with short exposure time relevant to ventricular assist devices. Blood from healthy donors was exposed to three levels of HMSS (75Pa, 125Pa, and 175Pa) for a short exposure time (0.5 s) using our Couette-type blood-shearing device. Neutrophil activation (Mac-1, platelet-neutrophil aggregates) and surface expression levels of two key functional receptors (CD62L and CD162) on neutrophils were evaluated by flow cytometry. Neutrophil phagocytosis and transmigration were also examined with functional assays. Results showed that the expression of Mac-1 on neutrophils and platelet-neutrophil aggregates increased significantly while the level of CD62L expression on neutrophils decreased significantly after the exposure to HMSS. The Mac-1 expression progressively increased while the CD62L expression progressively decreased with the increased level of HMSS. The level of CD162 expression on neutrophils slightly increased after the exposure to HMSS, but the increase was not significant. The phagocytosis assay data revealed that the ability of neutrophils to phagocytose latex beads coated with fluorescently labeled rabbit IgG increased significantly with the increased level of HMSS. The transmigration ability of neutrophils slightly increased after the exposure to HMSS, but did not reach a significant level. In summary, HMSS with a short exposure time of 0.5 seconds could induce neutrophil activation, platelet-neutrophil aggregation, shedding of CD62L receptor, and increased phagocytic ability. However, the exposure to the three levels of HMSS did not cause a significant change in neutrophil transmigration capacity and shedding of CD162 receptor on neutrophils.
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Affiliation(s)
- Wenji Sun
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Shigang Wang
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jiafeng Zhang
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Katherin Arias
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA.,Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, MD, USA
| | - Bartley P Griffith
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Zhongjun J Wu
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA.,Fischell Department of Bioengineering, A. James Clark School of Engineering, University of Maryland, College Park, MD, USA
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14
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Railwah C, Lora A, Zahid K, Goldenberg H, Campos M, Wyman A, Jundi B, Ploszaj M, Rivas M, Dabo A, Majka SM, Foronjy R, El Gazzar M, Geraghty P. Cigarette smoke induction of S100A9 contributes to chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2020; 319:L1021-L1035. [PMID: 32964723 DOI: 10.1152/ajplung.00207.2020] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
S100 calcium-binding protein A9 (S100A9) is elevated in plasma and bronchoalveolar lavage fluid (BALF) of patients with chronic obstructive pulmonary disease (COPD), and aging enhances S100A9 expression in several tissues. Currently, the direct impact of S100A9-mediated signaling on lung function and within the aging lung is unknown. Here, we observed that elevated S100A9 levels in human BALF correlated with age. Elevated lung levels of S100A9 were higher in older mice compared with in young animals and coincided with pulmonary function changes. Both acute and chronic exposure to cigarette smoke enhanced S100A9 levels in age-matched mice. To examine the direct role of S100A9 on the development of COPD, S100a9-/- mice or mice administered paquinimod were exposed to chronic cigarette smoke. S100A9 depletion and inhibition attenuated the loss of lung function, pressure-volume loops, airway inflammation, lung compliance, and forced expiratory volume in 0.05 s/forced vital capacity, compared with age-matched wild-type or vehicle-administered animals. Loss of S100a9 signaling reduced cigarette smoke-induced airspace enlargement, alveolar remodeling, lung destruction, ERK and c-RAF phosphorylation, matrix metalloproteinase-3 (MMP-3), matrix metalloproteinase-9 (MMP-9), monocyte chemoattractant protein-1 (MCP-1), interleukin-6 (IL-6), and keratinocyte-derived chemokine (KC) release into the airways. Paquinimod administered to nonsmoked, aged animals reduced age-associated loss of lung function. Since fibroblasts play a major role in the production and maintenance of extracellular matrix in emphysema, primary lung fibroblasts were treated with the ERK inhibitor LY3214996 or the c-RAF inhibitor GW5074, resulting in less S100A9-induced MMP-3, MMP-9, MCP-1, IL-6, and IL-8. Silencing Toll-like receptor 4 (TLR4), receptor for advanced glycation endproducts (RAGE), or extracellular matrix metalloproteinase inducer (EMMPRIN) prevented S100A9-induced phosphorylation of ERK and c-RAF. Our data suggest that S100A9 signaling contributes to the progression of smoke-induced and age-related COPD.
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Affiliation(s)
- Christopher Railwah
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Alnardo Lora
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Kanza Zahid
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Hannah Goldenberg
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Michael Campos
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami Miller School of Medicine, Miami, Florida
| | - Anne Wyman
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Bakr Jundi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Magdalena Ploszaj
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Melissa Rivas
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Abdoulaye Dabo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Susan M Majka
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado
| | - Robert Foronjy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Mohamed El Gazzar
- Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | - Patrick Geraghty
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, New York
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15
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Tackenberg H, Möller S, Filippi MD, Laskay T. The Small GTPase Cdc42 Is a Major Regulator of Neutrophil Effector Functions. Front Immunol 2020; 11:1197. [PMID: 32595647 PMCID: PMC7304460 DOI: 10.3389/fimmu.2020.01197] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 05/14/2020] [Indexed: 12/13/2022] Open
Abstract
Neutrophil granulocytes are key components of the innate immune system. As the first responders to inflammatory cues, they rapidly migrate toward the site of infection or inflammation and fulfill diverse effector functions. Since these effector functions can be both beneficial and harmful to the host and surrounding tissue, they require a strict control. The small GTPase Cdc42 is known to regulate neutrophil locomotion by controlling cytoskeleton rearrangement in murine neutrophils. However, the role of Cdc42 in other neutrophil functions in human neutrophils is still poorly understood. Here we demonstrate that in primary human neutrophils, Cdc42 controls directed and random migration, activation, and degranulation as well as the formation of reactive oxygen species, in a stimulus dependent manner. In addition, we show that Cdc42 regulates pathogen killing efficiency, both in murine and human neutrophils. Cdc42 regulation of neutrophil functions is linked to differential regulation of Akt, p38, and p42/44. Our data, therefore, suggests a mechanistic role for Cdc42 activity in primary human neutrophil biology, and identify Cdc42 activity as a target to modulate neutrophil effector mechanisms and killing efficacy.
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Affiliation(s)
- Heidi Tackenberg
- Department of Infectious Diseases and Microbiology, University of Lübeck, Lübeck, Germany
| | - Sonja Möller
- Department of Infectious Diseases and Microbiology, University of Lübeck, Lübeck, Germany
| | - Marie-Dominique Filippi
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Tamás Laskay
- Department of Infectious Diseases and Microbiology, University of Lübeck, Lübeck, Germany
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16
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Drescher HK, Schippers A, Rosenhain S, Gremse F, Bongiovanni L, de Bruin A, Eswaran S, Gallage SU, Pfister D, Szydlowska M, Heikenwalder M, Weiskirchen S, Wagner N, Trautwein C, Weiskirchen R, Kroy DC. L-Selectin/CD62L is a Key Driver of Non-Alcoholic Steatohepatitis in Mice and Men. Cells 2020; 9:cells9051106. [PMID: 32365632 PMCID: PMC7290433 DOI: 10.3390/cells9051106] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 04/20/2020] [Accepted: 04/27/2020] [Indexed: 02/07/2023] Open
Abstract
CD62L (L-Selectin) dependent lymphocyte infiltration is known to induce inflammatory bowel disease (IBD), while its function in the liver, especially in non-alcoholic steatohepatitis (NASH), remains unclear. We here investigated the functional role of CD62L in NASH in humans as well as in two mouse models of steatohepatitis. Hepatic expression of a soluble form of CD62L (sCD62L) was measured in patients with steatosis and NASH. Furthermore, CD62L−/− mice were fed with a methionine and choline deficient (MCD) diet for 4 weeks or with a high fat diet (HFD) for 24 weeks. Patients with NASH displayed increased serum levels of sCD62L. Hepatic CD62L expression was higher in patients with steatosis and increased dramatically in NASH patients. Interestingly, compared to wild type (WT) mice, MCD and HFD-treated CD62L−/− mice were protected from diet-induced steatohepatitis. This was reflected by less fat accumulation in hepatocytes and a dampened manifestation of the metabolic syndrome with an improved insulin resistance and decreased cholesterol and triglyceride levels. Consistent with ameliorated disease, CD62L−/− animals exhibited an enhanced hepatic infiltration of Treg cells and a strong activation of an anti-oxidative stress response. Those changes finally resulted in less fibrosis in CD62L−/− mice. Additionally, this effect could be reproduced in a therapeutic setting by administrating an anti-CD62L blocking antibody. CD62L expression in humans and mice correlates with disease activity of steatohepatitis. CD62L knockout and anti-CD62L-treated mice are protected from diet-induced steatohepatitis suggesting that CD62L is a promising target for therapeutic interventions in NASH.
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Affiliation(s)
- Hannah K. Drescher
- Department of Internal Medicine III, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (C.T.); (D.C.K.)
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
- Correspondence:
| | - Angela Schippers
- Department of Pediatrics, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (A.S.); (S.E.); (N.W.)
| | - Stefanie Rosenhain
- Institute for Experimental Molecular Imaging, University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.R.); (F.G.)
| | - Felix Gremse
- Institute for Experimental Molecular Imaging, University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.R.); (F.G.)
| | - Laura Bongiovanni
- Dutch Molecular Pathology Centre, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, 3508 Utrecht, The Netherlands; (L.B.); (A.d.B.)
| | - Alain de Bruin
- Dutch Molecular Pathology Centre, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, 3508 Utrecht, The Netherlands; (L.B.); (A.d.B.)
| | - Sreepradha Eswaran
- Department of Pediatrics, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (A.S.); (S.E.); (N.W.)
| | - Suchira U. Gallage
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Dominik Pfister
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Marta Szydlowska
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Mathias Heikenwalder
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Sabine Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.W.); (R.W.)
| | - Norbert Wagner
- Department of Pediatrics, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (A.S.); (S.E.); (N.W.)
| | - Christian Trautwein
- Department of Internal Medicine III, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (C.T.); (D.C.K.)
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.W.); (R.W.)
| | - Daniela C. Kroy
- Department of Internal Medicine III, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (C.T.); (D.C.K.)
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17
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L-selectin shedding affects bacterial clearance in the lung: a new regulatory pathway for integrin outside-in signaling. Blood 2020; 134:1445-1457. [PMID: 31366620 DOI: 10.1182/blood.2019000685] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 07/24/2019] [Indexed: 02/08/2023] Open
Abstract
Pneumonia induced by Gram-negative bacteria is a common and serious disease associated with high morbidity and mortality. Elimination of bacterial pathogens relies on the recruitment and functions of neutrophils. The adhesion molecule L-selectin has recently been implicated in integrin activation in neutrophils (inside-out signaling). However, the molecular mechanism by which L-selectin participates in host defense against Klebsiella pneumoniae-induced pulmonary inflammation is unknown. We demonstrate that L-selectin-deficient mice are prone to pulmonary infection compared with wild-type controls. Mechanistically, L-selectin cleavage from the neutrophil surface triggered by integrin engagement is involved in neutrophil recruitment into the lung and bacterial clearance. Downstream of integrin ligation, the metalloproteinase A disintegrin and metalloproteinase 17 (ADAM17) sheds L-selectin from the neutrophil surface in an IRhom2-dependent manner. L-selectin cleavage enhances integrin-mediated outside-in signaling, resulting in increased neutrophil effector functions. Thus, we identify a novel regulatory mechanism in neutrophils required for an adequate immune response triggered by integrin engagement during K pneumoniae-induced pulmonary inflammation.
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18
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Lokwani R, Wark PA, Baines KJ, Fricker M, Barker D, Simpson JL. Blood Neutrophils In COPD But Not Asthma Exhibit A Primed Phenotype With Downregulated CD62L Expression. Int J Chron Obstruct Pulmon Dis 2019; 14:2517-2525. [PMID: 31814717 PMCID: PMC6863133 DOI: 10.2147/copd.s222486] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/23/2019] [Indexed: 11/25/2022] Open
Abstract
Purpose To characterize neutrophils in obstructive airway disease by measuring their surface adhesion molecules and oxidative burst along with characterizing them into different subsets as per their adhesion molecule expression. Patients and methods Peripheral blood from adults with COPD (n=17), asthma (n=20), and healthy participants (n=19) was examined for expression of CD16, CD62L, CD11b, CD11c, and CD54, and analyzed by flow cytometry. For oxidative burst and CD62L shedding analysis, CD16 and CD62L stained leukocytes were loaded with Dihydrorhodamine-123 (DHR-123) and stimulated with N-Formylmethionine-leucyl-phenylalanine (fMLF). Neutrophil subsets were characterized based on CD16 and CD62L expression. Marker surface expression was recorded on CD16+ neutrophils as median fluorescence intensity (MFI). Results Neutrophil surface expression of CD62L was significantly reduced in COPD (median (IQR) MFI: 1156 (904, 1365)) compared with asthma (1865 (1157, 2408)) and healthy controls (2079 (1054, 2960)); p=0.028. COPD neutrophils also demonstrated a significant reduction in CD62L expression with and without fMLF stimulation. Asthma participants had a significantly increased proportion and number of CD62Lbright/CD16dim neutrophils (median: 5.4% and 0.14 × 109/L, respectively), in comparison with healthy (3.54% and 0.12 × 109/L, respectively); p<0.017. Conclusion Reduced CD62L expression suggests blood neutrophils have undergone priming in COPD but not in asthma, which may be the result of systemic inflammation. The increased shedding of CD62L receptor by COPD blood neutrophils suggests a high sensitivity for activation.
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Affiliation(s)
- Ravi Lokwani
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, Callaghan, NSW 2308, Australia.,Department of Respiratory and Sleep Medicine, John Hunter Hospital, New Lambton Heights, NSW 2305, Australia.,School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Peter Ab Wark
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, Callaghan, NSW 2308, Australia.,Department of Respiratory and Sleep Medicine, John Hunter Hospital, New Lambton Heights, NSW 2305, Australia.,School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Katherine J Baines
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, Callaghan, NSW 2308, Australia.,School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Michael Fricker
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, Callaghan, NSW 2308, Australia.,School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Daniel Barker
- School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Jodie L Simpson
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, Callaghan, NSW 2308, Australia.,Department of Respiratory and Sleep Medicine, John Hunter Hospital, New Lambton Heights, NSW 2305, Australia.,School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, Callaghan, NSW 2308, Australia
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19
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Xie F, Zhang X, Luo W, Ge H, Sun D, Liu P. Notch Signaling Pathway Is Involved in bFGF-Induced Corneal Lymphangiogenesis and Hemangiogenesis. J Ophthalmol 2019; 2019:9613923. [PMID: 31531237 PMCID: PMC6721487 DOI: 10.1155/2019/9613923] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 04/14/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Notch/Dll4 involvement in cornea neovascularization (CRNV) and lymphangiogenesis is unclear. This study aimed to explore the role of notch signaling in basic fibroblast growth factor- (bFGF-) induced corneal lymphangiogenesis and hemangiogenesis. METHODS Corneal stroma of C57BL/6 mice was implanted with bFGF- or phosphate-buffered saline- (PBS-) soaked pellets. Corneal lymphangiogenesis and neovascularization were evaluated by immunofluorescence. Vascular endothelial growth factor-A (VEGF-A), Delta-like ligand 4 (Dll4), and Notch1 mRNA and protein expression were examined on days 1, 3, 7, and 14 by real-time polymerase chain reaction and western blot. Corneal cells were treated with ranibizumab, dexamethasone, and γ-secretase inhibitor (GSI). Microspheres were used to evaluate corneal hemangiogenesis in vivo. RESULTS Corneal hemangiogenesis reached its peak on day 7 after bFGF implantation, and corneal lymphangiogenesis was significantly higher on day 7 and 14, compared with PBS. mRNA and protein expression of VEGF-A, Dll4, and Notch1 were higher in bFGF-induced animal models compared with controls. Corneal hemangiogenesis and lymphangiogenesis decreased after 7 days of ranibizumab or dexamethasone treatment. After adding GSI for 24 h in bFGF-induced cells, the expression of Notch1 and Dll4 were downregulated compared with that in the control group whereas the expression level of VEGF-A was upregulated. Fluorescent particle number was higher in the GSI group. Ranibizumab and dexamethasone decreased the fluorescence signal. CONCLUSION The notch signaling pathway plays a role in regulating VEGF expression, affecting corneal lymphangiogenesis and hemangiogenesis in mice. The molecular imaging probe technique can visualize the changes in the VEGF-A expression level of corneal limbus hemangiogenesis.
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Affiliation(s)
- Fang Xie
- Department of Ophthalmology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
- The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
| | - Xue Zhang
- The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wenting Luo
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hongyan Ge
- Department of Ophthalmology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Dawei Sun
- Department of Ophthalmology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ping Liu
- Department of Ophthalmology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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20
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Geesala R, Issuree PD, Maretzky T. Novel functions of inactive rhomboid proteins in immunity and disease. J Leukoc Biol 2019; 106:823-835. [PMID: 31369701 DOI: 10.1002/jlb.3vmr0219-069r] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/03/2019] [Accepted: 06/20/2019] [Indexed: 12/11/2022] Open
Abstract
iRhoms are related to a family of intramembrane serine proteinases called rhomboids but lack proteolytic activity. In mammals, there are two iRhoms, iRhom1 and iRhom2, which have similar domain structures and overlapping specificities as well as distinctive functions. These catalytically inactive rhomboids are essential regulators for the maturation and trafficking of the disintegrin metalloprotease ADAM17 from the endoplasmic reticulum to the cell surface, and are required for the cleavage and release of a variety of membrane-associated proteins, including the IL-6 receptor, l-selectin, TNF, and EGFR ligands. iRhom2-dependent regulation of ADAM17 function has been recently implicated in the development and progression of several autoimmune diseases including rheumatoid arthritis, lupus nephritis, as well as hemophilic arthropathy. In this review, we discuss our current understanding of iRhom biology, their implications in autoimmune pathologies, and their potential as therapeutic targets.
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Affiliation(s)
- Ramasatyaveni Geesala
- Inflammation Program, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, Iowa, USA.,Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, Iowa, USA
| | - Priya D Issuree
- Inflammation Program, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, Iowa, USA.,Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, Iowa, USA
| | - Thorsten Maretzky
- Inflammation Program, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, Iowa, USA.,Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine University of Iowa, Iowa City, Iowa, USA.,Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa, USA
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21
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Wu J, Mishra HK, Walcheck B. Role of ADAM17 as a regulatory checkpoint of CD16A in NK cells and as a potential target for cancer immunotherapy. J Leukoc Biol 2019; 105:1297-1303. [PMID: 30786043 PMCID: PMC6792391 DOI: 10.1002/jlb.2mr1218-501r] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/08/2019] [Accepted: 02/10/2019] [Indexed: 01/11/2023] Open
Abstract
Human NK cell antitumor activities involve Ab-dependent cell-mediated cytotoxicity (ADCC), which is a key mechanism of action for several clinically successful tumor-targeting therapeutic mAbs. Human NK cells exclusively recognize these Abs by the Fcγ receptor CD16A (FcγRIIIA), one of their most potent activating receptors. Unlike other activating receptors on NK cells, CD16A undergoes a rapid down-regulation in expression by a proteolytic process following NK cell activation with various stimuli. In this review, the role of a disintegrin and metalloproteinase-17 (ADAM17) in CD16A cleavage and as a regulatory checkpoint is discussed. Several studies have examined the effects of inhibiting ADAM17 or CD16A cleavage directly during NK cell engagement of Ab-coated tumor cells, which resulted in strengthened Ab tethering, decreased tumor cell detachment, and enhanced CD16A signaling and cytokine production. However, the effects of either manipulation on ADCC have varied between studies, which may be due to dissimilar assays and the contribution of different killing processes by NK cells. Of importance is that NK cells under various circumstances, including in the tumor microenvironment of patients, down-regulate CD16A and this appears to impair their function. Considerable progress has been made in the development of ADAM17 inhibitors, including human mAbs that have advantages of high specificity and increased half-life in vivo. These inhibitors may provide a therapeutic means of increasing ADCC potency and/or antitumor cytokine production by NK cells in an immunosuppressive tumor microenvironment, and if used in combination with tumor-targeting Abs or NK cell-based adoptive immunotherapies may improve their efficacy.
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Affiliation(s)
- Jianming Wu
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, Minnesota, USA
| | - Hemant K Mishra
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, Minnesota, USA
| | - Bruce Walcheck
- Department of Veterinary and Biomedical Sciences, University of Minnesota, St. Paul, Minnesota, USA
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22
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Ivetic A, Hoskins Green HL, Hart SJ. L-selectin: A Major Regulator of Leukocyte Adhesion, Migration and Signaling. Front Immunol 2019; 10:1068. [PMID: 31139190 PMCID: PMC6527602 DOI: 10.3389/fimmu.2019.01068] [Citation(s) in RCA: 260] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/26/2019] [Indexed: 12/12/2022] Open
Abstract
L-selectin (CD62L) is a type-I transmembrane glycoprotein and cell adhesion molecule that is expressed on most circulating leukocytes. Since its identification in 1983, L-selectin has been extensively characterized as a tethering/rolling receptor. There is now mounting evidence in the literature to suggest that L-selectin plays a role in regulating monocyte protrusion during transendothelial migration (TEM). The N-terminal calcium-dependent (C-type) lectin domain of L-selectin interacts with numerous glycans, including sialyl Lewis X (sLex) for tethering/rolling and proteoglycans for TEM. Although the signals downstream of L-selectin-dependent adhesion are poorly understood, they will invariably involve the short 17 amino acid cytoplasmic tail. In this review we will detail the expression of L-selectin in different immune cell subsets, and its influence on cell behavior. We will list some of the diverse glycans known to support L-selectin-dependent adhesion, within luminal and abluminal regions of the vessel wall. We will describe how each domain within L-selectin contributes to adhesion, migration and signal transduction. A significant focus on the L-selectin cytoplasmic tail and its proposed contribution to signaling via the ezrin-radixin-moesin (ERM) family of proteins will be outlined. Finally, we will discuss how ectodomain shedding of L-selectin during monocyte TEM is essential for the establishment of front-back cell polarity, bestowing emigrated cells the capacity to chemotax toward sites of damage.
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Affiliation(s)
- Aleksandar Ivetic
- King's College London, School of Cardiovascular Medicine and Sciences, BHF Center of Research Excellence, London, United Kingdom
| | - Hannah Louise Hoskins Green
- King's College London, School of Cardiovascular Medicine and Sciences, BHF Center of Research Excellence, London, United Kingdom
| | - Samuel James Hart
- King's College London, School of Cardiovascular Medicine and Sciences, BHF Center of Research Excellence, London, United Kingdom
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Peng S, Chen SB, Li LD, Tong CF, Li N, Lü SQ, Long M. Impact of real-time shedding on binding kinetics of membrane-remaining L-selectin to PSGL-1. Am J Physiol Cell Physiol 2019; 316:C678-C689. [DOI: 10.1152/ajpcell.00212.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
L-selectin shedding induced by various cytokines is crucial in activating neutrophils (PMNs) in inflammatory cascade. While the real-time shedding in vivo lasts ~10 min after PMN activation, the impact of time-dependent shedding on binding kinetics of membrane-remaining L-selectins to its ligands is poorly understood at transient or steady state. Here, we developed an in vitro L-selectin shedding dynamics approach, together with competitive assays of cell adhesion, and proposed a theoretical model for quantifying the impact of real-time shedding on the binding kinetics of membrane-remaining L-selectins to P-selectin glycoprotein ligand-1 (PSGL-1). Our data indicated that the extent of L-selectin shedding on PMA activation is higher, but the terminating time is longer for Jurkat cells than those for human PMNs. Meanwhile, fMLF or IL-8 stimulation yields the longer terminating time than that on PMA stimulation but results in a similar shedding extent for PMNs. L-selectin shedding reduces L-selectin-PSGL-1-mediated cell adhesion in three ways: decreasing membrane-anchored L-selectins, increasing soluble L-selectins competitively binding to ligands, and presenting conformational alteration of membrane-remaining L-selectins themselves. Compared with those on intact cells, the binding affinities of membrane-remaining L-selectin-PSGL-1 pairs were all enhanced at initial and lowered at the late shedding phase for both PMN and Jurkat cells even with varied transition time points. The rolling velocities of both PMNs and Jurkat cells were increased following mechanically or biochemically induced shedding of L-selectin under shear flow. These findings help to further our understanding of the function of time-dependent L-selectin shedding during the inflammation cascade.
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Affiliation(s)
- Shuang Peng
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Shen-Bao Chen
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Lin-Da Li
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- College of Bioengineering, Chongqing University, Chongqing, China
| | - Chun-Fang Tong
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Ning Li
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Shou-Qin Lü
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Mian Long
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
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How Adhesion Molecule Patterns Change While Neutrophils Traffic through the Lung during Inflammation. Mediators Inflamm 2019; 2019:1208086. [PMID: 30944544 PMCID: PMC6421765 DOI: 10.1155/2019/1208086] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/13/2018] [Accepted: 12/20/2018] [Indexed: 02/06/2023] Open
Abstract
In acute pulmonary inflammation, polymorphonuclear cells (PMNs) pass a transendothelial barrier from the circulation into the lung interstitium followed by a transepithelial migration into the alveolar space. These migration steps are regulated differentially by a concept of adhesion molecules and remain-despite decades of research-incompletely understood. Current knowledge of changes in the expression pattern of adhesion molecules mainly derives from in vitro studies or from studies in extrapulmonary organ systems, where regulation of adhesion molecules differs significantly. In a murine model of lung inflammation, we determined the expression pattern of nine relevant neutrophilic adhesion molecules on their way through the different compartments of the lung. We used a flow cytometry-based technique that allowed describing spatial distribution of the adhesion molecules expressed on PMNs during their migration through the lung in detail. For example, the highest expression of CD29 was found in the intravascular compartment, highlighting its impact on the initial adhesion to the endothelium. CD47 showed its peak of expression on the later phase of transendothelial migration, whereas CD11b and CD54 expression peaked interstitial. A pivotal role for transepithelial migration was found for the adhesion molecule CD172a. Thereby, expression may correlate with functional impact for specific migration steps. In vitro studies further confirmed our in vivo findings. In conclusion, we are the first to determine the changes in expression patterns of relevant adhesion molecules on their migration through the different compartments of the lung. These findings may help to further understand the regulation of neutrophil trafficking in the lung.
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CXCL1 regulates neutrophil homeostasis in pneumonia-derived sepsis caused by Streptococcus pneumoniae serotype 3. Blood 2019; 133:1335-1345. [PMID: 30723078 DOI: 10.1182/blood-2018-10-878082] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 02/03/2019] [Indexed: 12/22/2022] Open
Abstract
Neutrophil migration to the site of bacterial infection is a critical step in host defense. Exclusively produced in the bone marrow, neutrophil release into the blood is tightly controlled. Although the chemokine CXCL1 induces neutrophil influx during bacterial infections, its role in regulating neutrophil recruitment, granulopoiesis, and neutrophil mobilization in response to lung infection-induced sepsis is unclear. Here, we used a murine model of intrapulmonary Streptococcus pneumoniae infection to investigate the role of CXCL1 in host defense, granulopoiesis, and neutrophil mobilization. Our results demonstrate that CXCL1 augments neutrophil influx to control bacterial growth in the lungs, as well as bacterial dissemination, resulting in improved host survival. This was shown in Cxcl1 -/- mice, which exhibited defective amplification of early neutrophil precursors in granulocytic compartments, and CD62L- and CD49d-dependent neutrophil release from the marrow. Administration of recombinant CXCL2 and CXCL5 after infection rescues the impairments in neutrophil-dependent host defense in Cxcl1 -/- mice. Taken together, these findings identify CXCL1 as a central player in host defense, granulopoiesis, and mobilization of neutrophils during Gram-positive bacterial pneumonia-induced sepsis.
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Alrefai MT, Tarola CL, Raagas R, Ridwan K, Shalal M, Lomis N, Paul A, Alrefai MD, Prakash S, Schwertani A, Shum-Tim D. Functional Assessment of Pluripotent and Mesenchymal Stem Cell Derived Secretome in Heart Disease. ANNALS OF STEM CELL RESEARCH 2019; 2:29-36. [PMID: 32064466 PMCID: PMC7020557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVES Cell-based therapies have demonstrated variable degrees of success in the management of myocardial infarction and heart failure. By inducing a myocardial infarction in a rat model, the effects of secretome from human induced pluripotent stem cells (HiPSCs) and human mesenchymal stem cells (hMSCs) on cardiac function and remodeling were investigated. METHODS HiPSCs and hMSCs were cultured and after 12 cycles, secretome was collected. The quantification of stem cell growth factors was measured using the ELISA test. Thirty female Lewis rats underwent surgical ligation of the left coronary artery. The rats were then randomized (n=10/group) to receive one of three treatments injected into the peri-infarct area; normal saline, HiPSC and hMSC. Left ventricular ejection fraction (LVEF), fractional shortening (FS), histology and serum proteomics were evaluated in a blinded fashion both pre-operatively and at 2, 4 and 6 weeks. RESULTS ELISA studies revealed, Platelet-derived growth factor (PDGF) concentration of 3.35± 0.031 ng/ml (0.68± 0.027ng/ml) for MSC-CM group, 3.44± 0.042 ng/ml (0.78± 0.03 ng/ml) for the HiPSC-CM group, 3.2± 0.107 ng/ml (0.64±0.013 ng/ml) for the MSC-pre-group, 3.1± 0.075 ng/ml (0.71± 0.013 ng/ml) for the HiPSC-pre group and 3.3± 0.047 ng/ml (0.71± 0.014ng/ml) for the HiPSC-pre-r group at 60 min in comparison to at (0 min).Compared to non-treated (NT), HiPSC and hMSC, treated rats demonstrated significant improvement in LVEF and FS, and significant reduction in scar size (p<0.05) at 4 and 6 weeks. Proteomic analysis detected the presence of Vascular endothelial growth factor (VEGF) in the serum of rats receiving HiPSC, which was absent in the NT and hMSC groups. CONCLUSION The current study demonstrated a significant improvement of cardiac function and remodeling in response to secretome from HiPSCs and hMSCs. These findings suggest that secretome from HiPSCs may have potential therapy for acute myocardial infarction (MI) without the need of stem cell harvesting and implantation.
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Affiliation(s)
- MT Alrefai
- Divisions of Cardiac Surgery and Cardiology, McGill University Health Center, Montreal, QC, Canada,King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - CL Tarola
- Division of cardiac surgery, University of Western Ontario, Canada
| | - R Raagas
- Divisions of Cardiac Surgery and Cardiology, McGill University Health Center, Montreal, QC, Canada
| | - K Ridwan
- Divisions of Cardiac Surgery and Cardiology, McGill University Health Center, Montreal, QC, Canada
| | - M Shalal
- Divisions of Cardiac Surgery and Cardiology, McGill University Health Center, Montreal, QC, Canada
| | - N Lomis
- Division of Biomedical Engineering, McGill University Health Center, Montreal, QC, Canada
| | - A Paul
- Department of Chemical and Petroleum Engineering, Bioengineering Graduate Program, School of Engineering, University of Kansas, Lawrence, KS, USA
| | - MD Alrefai
- Alnoor hospital, Ministry of health, Makkah, Saudi Arabia
| | - S Prakash
- Division of Biomedical Engineering, McGill University Health Center, Montreal, QC, Canada
| | - A Schwertani
- Divisions of Cardiac Surgery and Cardiology, McGill University Health Center, Montreal, QC, Canada
| | - D Shum-Tim
- Divisions of Cardiac Surgery and Cardiology, McGill University Health Center, Montreal, QC, Canada,Address for Correspondence: Dominique Shum-Tim, McGill University, Faculty of Medicine, Suite, C.01.1284.5, 1001 Decarie Boulevard, Montreal, Quebec, Canada, H4A 3J, USA,
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Domínguez-Luis MJ, Armas-González E, Herrera-García A, Arce-Franco M, Feria M, Vicente-Manzanares M, Martínez-Ruiz A, Sánchez-Madrid F, Díaz-González F. L-selectin expression is regulated by CXCL8-induced reactive oxygen species produced during human neutrophil rolling. Eur J Immunol 2018; 49:386-397. [PMID: 30443903 DOI: 10.1002/eji.201847710] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 09/21/2018] [Accepted: 10/29/2018] [Indexed: 12/11/2022]
Abstract
Neutrophils destroy invading microorganisms by phagocytosis by bringing them into contact with bactericidal substances, among which ROS are the most important. However, ROS also function as important physiological regulators of cellular signaling pathways. Here, we addressed the involvement of oxygen derivatives in the regulation of human neutrophil rolling, an essential component of the inflammatory response. Flow experiments using dihydroethidium-preloaded human neutrophils showed that these cells initiate an early production of intracellular ROS during the rolling phase of the adhesion cascade, a phenomenon that required cell rolling, and the interaction of the chemokine receptor CXCR2 with their ligand CXCL8. Flow cytometry experiments demonstrated that L-selectin shedding in neutrophils is triggered by ROS through an autocrine-paracrine mechanism. Preincubation of neutrophils with the NADPH oxidase complex inhibitor diphenyleniodonium chloride significantly increased the number of rolling neutrophils on endothelial cells. Interestingly, the same effect was observed when CXCL8 signaling was interfered using either a blocking monoclonal antibody or an inhibitor of its receptor. These findings indicate that, in response to CXCL8, neutrophils initiate ROS production during the rolling phase of the inflammatory response. This very early ROS production might participate in the modulation of the inflammatory response by inducing L-selectin shedding in neutrophils.
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Affiliation(s)
| | | | - Ada Herrera-García
- Servicio de Reumatología, Hospital Universitario de Canarias, La Laguna, Spain
| | - María Arce-Franco
- Servicio de Reumatología, Hospital Universitario de Canarias, La Laguna, Spain
| | - Manuel Feria
- Departamento de Farmacología, Facultad de Medicina, Universidad de La Laguna, La Laguna, Spain
| | | | - Antonio Martínez-Ruiz
- Servicio de Inmunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IP), Madrid, Spain
- Centro de Investigaciones Biomedicas en Red en Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Francisco Sánchez-Madrid
- Servicio de Inmunología, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa (IP), Madrid, Spain
- Centro de Investigaciones Biomedicas en Red en Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Federico Díaz-González
- Servicio de Reumatología, Hospital Universitario de Canarias, La Laguna, Spain
- Departamento de Medicina, Facultad de Medicina, Universidad de La Laguna, Tenerife, Spain
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Singh AK, Das VNR, Amit A, Dikhit MR, Mahantesh V, Singh SK, Naryan S, Pandey K, Das P, Verma N, Bimal S. Cytokines and chemokines differentially regulate innate immune cell trafficking during post kala‐azar dermal leishmaniasis. J Cell Biochem 2018; 119:7406-7418. [DOI: 10.1002/jcb.27048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 04/23/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Ashish K. Singh
- Department of ImmunologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Vidya N. R. Das
- Department of Clinical MedicineRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Ajay Amit
- Department of ImmunologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Manas R. Dikhit
- Department of ImmunologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Vijaya Mahantesh
- Department of ImmunologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Shubhankar K. Singh
- Department of MicrobiologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Shyam Naryan
- Department of MicrobiologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Krishna Pandey
- Department of Clinical MedicineRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Pradeep Das
- Department of Molecular BiologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Neena Verma
- Department of PathologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
| | - Sanjiva Bimal
- Department of ImmunologyRajendra Memorial Research Institute of Medical SciencesPatnaIndia
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Ivetic A. A head-to-tail view of L-selectin and its impact on neutrophil behaviour. Cell Tissue Res 2018; 371:437-453. [PMID: 29353325 PMCID: PMC5820395 DOI: 10.1007/s00441-017-2774-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/05/2017] [Indexed: 01/04/2023]
Abstract
L-selectin is a type I transmembrane cell adhesion molecule expressed on most circulating leukocytes, including neutrophils. Engagement of L-selectin with endothelial-derived ligands initiates neutrophil tethering and rolling behaviour along luminal walls of post-capillary venules, constituting the first step of the multi-step adhesion cascade. There is a large body of evidence to suggest that signalling downstream of L-selectin can influence neutrophil behaviour: adhesion, migration and priming. This review will cover aspects of L-selectin form and function and introduce the “triad of L-selectin regulation”, highlighting the inextricable links between adhesion, signalling and ectodomain shedding and also highlighting the cytosolic proteins that interconnect them. Recent advances in how L-selectin impacts priming, transendothelial migration (TEM) and cell polarity will also be discussed.
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Affiliation(s)
- Aleksandar Ivetic
- BHF Centre for Research Excellence, School of Cardiovascular Medicine & Sciences, Faculty of Life Sciences & Medicine, King's College London, James Black Centre 125, Coldharbour Lane, London, SE5 9NU, UK.
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Role of the Glycocalyx as a Barrier to Leukocyte-Endothelium Adhesion. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1097:51-68. [PMID: 30315539 DOI: 10.1007/978-3-319-96445-4_3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Leukocyte (WBC) to endothelial cell (EC) adhesion is a receptor-mediated process governed by the avidity and affinity of selectins, which modulate adhesive forces during WBC rolling, and integrins, which determine the strength of firm adhesion. Adhesion receptors on the EC surface lie below an endothelial surface layer (ESL) comprised of the EC glycocalyx and adsorbed proteins which, in vivo, have a thickness on the order 500 nm. The glycocalyx consists of a matrix of the glycosaminoglycans heparan sulfate and chondroitin sulfate, bound to proteoglycans and encased in hyaluronan. Together, these carbohydrates form a layer that varies in glycan content along the length of post-capillary venules where WBC-EC adhesion occurs. Thickness and porosity of the glycocalyx can vary dramatically during the inflammatory response as observed by increased infiltration and diffusion of macromolecules within the layer following activation of the EC by cytokines and chemoattractants. In models of inflammation in the living animal, the shedding of glycans and diminished thickness of the glycocalyx rapidly occur to facilitate penetration by the WBCs and adhesion to the EC. The primary effectors of glycan shedding appear to be metalloproteases and heparanase released by the EC. Retardation of glycan shedding and WBC-EC adhesion has been demonstrated in vivo using MMP inhibitors and low-molecular-weight heparin (LMWH), where the latter competitively binds to heparanase liberated by the EC. Together, these agents may serve to stabilize the ESL and provide a useful strategy for treatment of inflammatory disorders.
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Marki A, Buscher K, Mikulski Z, Pries A, Ley K. Rolling neutrophils form tethers and slings under physiologic conditions in vivo. J Leukoc Biol 2017; 103:67-70. [PMID: 28821572 DOI: 10.1189/jlb.1ab0617-230r] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/20/2017] [Accepted: 07/31/2017] [Indexed: 01/13/2023] Open
Abstract
Human and mouse neutrophils are known to form tethers when rolling on selectins in vitro. Tethers are ∼0.2 μm thin, ∼5-10 μm-long structures behind rolling cells that can swing around to form slings that serve as self-adhesive substrates. Here, we developed a mouse intravital imaging method, where the neutrophil surface is labeled by injecting fluorescently labeled mAb to Ly-6G. Venules in the cremaster muscle of live mice were imaged at a high frame rate using a confocal microscope equipped with a fast resonant scanner. We observed 270 tethers (median length 3.5 μm) and 31 slings (median length 6.9 µm) on 186 neutrophils of 15 mice. Out of 199 tether break events, 123 were followed by immediate acceleration of the rolling cell, which shows that tethers are load-bearing structures in vivo. In venules with a high wall shear stress (WSS; > 12 dyn/cm2 ), median rolling velocity was higher (19 μm/s), and 43% of rolling neutrophils had visible tethers. In venules with WSS < 12 dyn/cm2 , only 26% of rolling neutrophils had visible tethers. We conclude that neutrophil tethers are commonly present and stabilize rolling in vivo.
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Affiliation(s)
- Alex Marki
- La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
| | - Konrad Buscher
- La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
| | - Zbigniew Mikulski
- La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
| | - Axel Pries
- Department of Physiology, Charite Universitatsmedizin, Berlin, Germany
| | - Klaus Ley
- La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
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Nakao S, Zandi S, Sun D, Hafezi-Moghadam A. Cathepsin B-mediated CD18 shedding regulates leukocyte recruitment from angiogenic vessels. FASEB J 2017; 32:143-154. [PMID: 28904019 DOI: 10.1096/fj.201601229r] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 08/21/2017] [Indexed: 01/19/2023]
Abstract
Cathepsin B (CtsB) contributes to atherosclerosis and cancer progression by processing the extracellular matrix and promoting angiogenesis. Although CtsB was reported to promote and reduce angiogenesis, there is no mechanistic explanation that reconciles this apparent discrepancy. CtsB cleaves CD18 from the surface of immune cells, but its contribution to angiogenesis has not been studied. We developed an in vivo technique for visualization of immune cell transmigration from corneal vessels toward implanted cytokines. Wild-type (WT) leukocytes extravasated from limbal vessels, angiogenic stalks, and growing tip vessels and migrated toward the cytokines, indicating immune competence of angiogenic vessels. Compared to WT leukocytes, CtsB-/- leukocytes accumulated in a higher number in angiogenic vessels, but extravasated less toward the implanted cytokine. The accumulated CtsB-/- leukocytes in angiogenic vessels expressed more CD18. CD18-/- leukocytes extravasated later than WT leukocytes. However, once extravasated, CD18-/- leukocytes transmigrated more rapidly than their WT counterparts. These results suggest that, although CD18 facilitates efficient extravasation, outside of the vessel CD18 interaction with the extracellular matrix, it reduced transmigration velocity. Our results reveal an unexpected role for CtsB in leukocyte extravasation and transmigration, which advances our understanding of the complex contribution of CtsB to angiogenesis.-Nakao, S., Zandi, S., Sun, D., Hafezi-Moghadam, A. Cathepsin B-mediated CD18 shedding regulates leukocyte recruitment from angiogenic vessels.
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Affiliation(s)
- Shintaro Nakao
- Molecular Biomarkers Nano-Imaging Laboratory, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; and.,Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Souska Zandi
- Molecular Biomarkers Nano-Imaging Laboratory, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; and
| | - Dawei Sun
- Molecular Biomarkers Nano-Imaging Laboratory, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; and
| | - Ali Hafezi-Moghadam
- Molecular Biomarkers Nano-Imaging Laboratory, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA; and
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Incalza MA, D'Oria R, Natalicchio A, Perrini S, Laviola L, Giorgino F. Oxidative stress and reactive oxygen species in endothelial dysfunction associated with cardiovascular and metabolic diseases. Vascul Pharmacol 2017; 100:1-19. [PMID: 28579545 DOI: 10.1016/j.vph.2017.05.005] [Citation(s) in RCA: 717] [Impact Index Per Article: 102.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 05/21/2017] [Accepted: 05/31/2017] [Indexed: 12/13/2022]
Abstract
Reactive oxygen species (ROS) are reactive intermediates of molecular oxygen that act as important second messengers within the cells; however, an imbalance between generation of reactive ROS and antioxidant defense systems represents the primary cause of endothelial dysfunction, leading to vascular damage in both metabolic and atherosclerotic diseases. Endothelial activation is the first alteration observed, and is characterized by an abnormal pro-inflammatory and pro-thrombotic phenotype of the endothelial cells lining the lumen of blood vessels. This ultimately leads to reduced nitric oxide (NO) bioavailability, impairment of the vascular tone and other endothelial phenotypic changes collectively termed endothelial dysfunction(s). This review will focus on the main mechanisms involved in the onset of endothelial dysfunction, with particular focus on inflammation and aberrant ROS production and on their relationship with classical and non-classical cardiovascular risk factors, such as hypertension, metabolic disorders, and aging. Furthermore, new mediators of vascular damage, such as microRNAs, will be discussed. Understanding mechanisms underlying the development of endothelial dysfunction is an important base of knowledge to prevent vascular damage in metabolic and cardiovascular diseases.
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Affiliation(s)
- Maria Angela Incalza
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Rossella D'Oria
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Annalisa Natalicchio
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Sebastio Perrini
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Luigi Laviola
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Giorgino
- Department of Emergency and Organ Transplantation, Section on Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy.
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Cortjens B, Ingelse SA, Calis JC, Vlaar AP, Koenderman L, Bem RA, van Woensel JB. Neutrophil subset responses in infants with severe viral respiratory infection. Clin Immunol 2017; 176:100-106. [DOI: 10.1016/j.clim.2016.12.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 11/04/2016] [Accepted: 12/29/2016] [Indexed: 12/11/2022]
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Rathod KS, Kapil V, Velmurugan S, Khambata RS, Siddique U, Khan S, Van Eijl S, Gee LC, Bansal J, Pitrola K, Shaw C, D’Acquisto F, Colas RA, Marelli-Berg F, Dalli J, Ahluwalia A. Accelerated resolution of inflammation underlies sex differences in inflammatory responses in humans. J Clin Invest 2017; 127:169-182. [PMID: 27893465 PMCID: PMC5199722 DOI: 10.1172/jci89429] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/17/2016] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Cardiovascular disease occurs at lower incidence in premenopausal females compared with age-matched males. This variation may be linked to sex differences in inflammation. We prospectively investigated whether inflammation and components of the inflammatory response are altered in females compared with males. METHODS We performed 2 clinical studies in healthy volunteers. In 12 men and 12 women, we assessed systemic inflammatory markers and vascular function using brachial artery flow-mediated dilation (FMD). In a further 8 volunteers of each sex, we assessed FMD response to glyceryl trinitrate (GTN) at baseline and at 8 hours and 32 hours after typhoid vaccine. In a separate study in 16 men and 16 women, we measured inflammatory exudate mediators and cellular recruitment in cantharidin-induced skin blisters at 24 and 72 hours. RESULTS Typhoid vaccine induced mild systemic inflammation at 8 hours, reflected by increased white cell count in both sexes. Although neutrophil numbers at baseline and 8 hours were greater in females, the neutrophils were less activated. Systemic inflammation caused a decrease in FMD in males, but an increase in females, at 8 hours. In contrast, GTN response was not altered in either sex after vaccine. At 24 hours, cantharidin formed blisters of similar volume in both sexes; however, at 72 hours, blisters had only resolved in females. Monocyte and leukocyte counts were reduced, and the activation state of all major leukocytes was lower, in blisters of females. This was associated with enhanced levels of the resolving lipids, particularly D-resolvin. CONCLUSIONS Our findings suggest that female sex protects against systemic inflammation-induced endothelial dysfunction. This effect is likely due to accelerated resolution of inflammation compared with males, specifically via neutrophils, mediated by an elevation of the D-resolvin pathway. TRIAL REGISTRATION ClinicalTrials.gov NCT01582321 and NRES: City Road and Hampstead Ethics Committee: 11/LO/2038. FUNDING The authors were funded by multiple sources, including the National Institute for Health Research, the British Heart Foundation, and the European Research Council.
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Kellner M, Noonepalle S, Lu Q, Srivastava A, Zemskov E, Black SM. ROS Signaling in the Pathogenesis of Acute Lung Injury (ALI) and Acute Respiratory Distress Syndrome (ARDS). ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 967:105-137. [PMID: 29047084 PMCID: PMC7120947 DOI: 10.1007/978-3-319-63245-2_8] [Citation(s) in RCA: 237] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The generation of reactive oxygen species (ROS) plays an important role for the maintenance of cellular processes and functions in the body. However, the excessive generation of oxygen radicals under pathological conditions such as acute lung injury (ALI) and its most severe form acute respiratory distress syndrome (ARDS) leads to increased endothelial permeability. Within this hallmark of ALI and ARDS, vascular microvessels lose their junctional integrity and show increased myosin contractions that promote the migration of polymorphonuclear leukocytes (PMNs) and the transition of solutes and fluids in the alveolar lumen. These processes all have a redox component, and this chapter focuses on the role played by ROS during the development of ALI/ARDS. We discuss the origins of ROS within the cell, cellular defense mechanisms against oxidative damage, the role of ROS in the development of endothelial permeability, and potential therapies targeted at oxidative stress.
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Affiliation(s)
- Manuela Kellner
- Department of Medicine, Center for Lung Vascular Pathobiology, University of Arizona, 1501 N Campbell Ave., Tucson, AZ, 85719, USA
| | - Satish Noonepalle
- Department of Medicine, Center for Lung Vascular Pathobiology, University of Arizona, 1501 N Campbell Ave., Tucson, AZ, 85719, USA
| | - Qing Lu
- Department of Medicine, Center for Lung Vascular Pathobiology, University of Arizona, 1501 N Campbell Ave., Tucson, AZ, 85719, USA
| | - Anup Srivastava
- Department of Medicine, Center for Lung Vascular Pathobiology, University of Arizona, 1501 N Campbell Ave., Tucson, AZ, 85719, USA
| | - Evgeny Zemskov
- Department of Medicine, Center for Lung Vascular Pathobiology, University of Arizona, 1501 N Campbell Ave., Tucson, AZ, 85719, USA
| | - Stephen M Black
- Department of Medicine, Center for Lung Vascular Pathobiology, University of Arizona, 1501 N Campbell Ave., Tucson, AZ, 85719, USA.
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Kamp ME, Shim R, Nicholls AJ, Oliveira AC, Mason LJ, Binge L, Mackay CR, Wong CHY. G Protein-Coupled Receptor 43 Modulates Neutrophil Recruitment during Acute Inflammation. PLoS One 2016; 11:e0163750. [PMID: 27658303 PMCID: PMC5033414 DOI: 10.1371/journal.pone.0163750] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/13/2016] [Indexed: 12/14/2022] Open
Abstract
Fermentation of dietary fibre in the gut yields large amounts of short chain fatty acids (SCFAs). SCFAs can impart biological responses in cells through their engagement of ‘metabolite-sensing’ G protein-coupled receptors (GPCRs). One of the main SCFA receptors, GPR43, is highly expressed by neutrophils, which suggests that the actions of GPR43 and dietary fibre intake may affect neutrophil recruitment during inflammatory responses in vivo. Using intravital imaging of the small intestine, we found greater intravascular neutrophil rolling and adhesion in Gpr43−/−mice in response to LPS at 1 h. After 4 h of LPS challenge, the intravascular rolling velocity of GPR43-deficient neutrophils was reduced significantly and increased numbers of neutrophils were found in the lamina propria of Gpr43−/−mice. Additionally, GPR43-deficient leukocytes demonstrated exacerbated migration into the peritoneal cavity following fMLP challenge. The fMLP-induced neutrophil migration was significantly suppressed in wildtype mice that were treated with acetate, but not in Gpr43−/−mice, strongly suggesting a role for SCFAs in modulating neutrophil migration via GPR43. Indeed, neutrophils of no fibre-fed wildtype mice exhibited elevated migratory behaviour compared to normal chow-fed wildtype mice. Interestingly, this elevated migration could also be reproduced through simple transfer of a no fibre microbiota into germ-free mice, suggesting that the composition and function of microbiota stemming from a no fibre diet mediated the changes in neutrophil migration. Therefore, GPR43 and a microbiota composition that allows for SCFA production function to modulate neutrophil recruitment during inflammatory responses.
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Affiliation(s)
- Marjon E. Kamp
- School of Biomedical Sciences, Monash University, Victoria, Australia
| | - Raymond Shim
- Centre for Inflammatory Diseases, Department of Medicine, School of Clinical Sciences, Monash University, Victoria, Australia
| | - Alyce J. Nicholls
- Centre for Inflammatory Diseases, Department of Medicine, School of Clinical Sciences, Monash University, Victoria, Australia
| | - Ana Carolina Oliveira
- Laboratório de Imunologia Molecular, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Linda J. Mason
- School of Biomedical Sciences, Monash University, Victoria, Australia
| | - Lauren Binge
- School of Biomedical Sciences, Monash University, Victoria, Australia
| | - Charles R. Mackay
- School of Biomedical Sciences, Monash University, Victoria, Australia
| | - Connie H. Y. Wong
- Centre for Inflammatory Diseases, Department of Medicine, School of Clinical Sciences, Monash University, Victoria, Australia
- * E-mail:
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Kawahara R, Granato DC, Yokoo S, Domingues RR, Trindade DM, Paes Leme AF. Mass spectrometry-based proteomics revealed Glypican-1 as a novel ADAM17 substrate. J Proteomics 2016; 151:53-65. [PMID: 27576135 DOI: 10.1016/j.jprot.2016.08.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 08/02/2016] [Accepted: 08/25/2016] [Indexed: 12/16/2022]
Abstract
ADAM17 (a disintegrin and metalloproteinase 17) is a plasma membrane metalloprotease involved in proteolytic release of the extracellular domain of many cell surface molecules, a process known as ectodomain shedding. Through this process, ADAM17 is implicated in several aspects of tumor growth and metastasis in a broad range of tumors, including head and neck squamous cell carcinomas (HNSCC). In this study, mass spectrometry-based proteomics approaches revealed glypican-1 (GPC1) as a new substrate for ADAM17, and its shedding was confirmed to be metalloprotease-dependent, induced by a pleiotropic agent (PMA) and physiologic ligand (EGF), and inhibited by marimastat. In addition, immunoblotting analysis of GPC1 in the extracellular media from control and ADAM17shRNA pointed to a direct involvement of ADAM17 in the cleavage of GPC1. Moreover, mass spectrometry-based interactome analysis of GPC1 revealed biological functions and pathways related mainly to cellular movement, adhesion and proliferation, which were events also modulated by up regulation of full length and cleavage GPC1. Altogether, we showed that GPC1 is a novel ADAM17 substrate, thus the function of GPC1 may be modulated by proteolysis signaling. BIOLOGICAL SIGNIFICANCE Inhibition of metalloproteases as a therapeutic approach has failed because there is limited knowledge of the degradome of individual proteases as well as the cellular function of cleaved substrates. Using different proteomic techniques, this study uncovered novel substrates that can be modulated by ADAM17 in oral squamous cell carcinoma cell line. Glypican-1 was validated as a novel substrate for ADAM17, with important function in adhesion, proliferation and migration of carcinoma cells. Therefore, this study opens new avenues regarding the proteolysis-mediated function of GPC1 by ADAM17.
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Affiliation(s)
- Rebeca Kawahara
- Laboratório Nacional de Biociências, LNBio, CNPEM, Campinas, Brazil
| | | | - Sami Yokoo
- Laboratório Nacional de Biociências, LNBio, CNPEM, Campinas, Brazil
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Pankow JS, Decker PA, Berardi C, Hanson NQ, Sale M, Tang W, Kanaya AM, Larson NB, Tsai MY, Wassel CL, Bielinski SJ. Circulating cellular adhesion molecules and risk of diabetes: the Multi-Ethnic Study of Atherosclerosis (MESA). Diabet Med 2016; 33:985-91. [PMID: 26937608 PMCID: PMC4914403 DOI: 10.1111/dme.13108] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/01/2016] [Indexed: 12/15/2022]
Abstract
AIMS To test the hypothesis that soluble cellular adhesion molecules would be positively and independently associated with risk of diabetes. METHODS Soluble levels of six cellular adhesion molecules (ICAM-1, E-selectin, VCAM-1, E-cadherin, L-selectin and P-selectin) were measured in participants in the Multi-Ethnic Study of Atherosclerosis, a prospective cohort study. Participants were then followed for up to 10 years to ascertain incident diabetes. RESULTS Sample sizes ranged from 826 to 2185. After adjusting for age, sex, race/ethnicity, BMI and fasting glucose or HbA1c , four cellular adhesion molecules (ICAM-1, E-selectin, VCAM-1 and E-cadherin) were positively associated with incident diabetes and there was a statistically significant trend across quartiles. Comparing the incidence of diabetes in the highest and lowest quartiles of each cellular adhesion molecule, the magnitude of association was largest for E-selectin (hazard ratio 2.49; 95% CI 1.26-4.93) and ICAM-1 (hazard ratio 1.76; 95% CI 1.22-2.55) in fully adjusted models. Tests of effect modification by racial/ethnic group and sex were not statistically significant for any of the cellular adhesion molecules (P > 0.05). CONCLUSIONS The finding of significant associations between multiple cellular adhesion molecules and incident diabetes may lend further support to the hypothesis that microvascular endothelial dysfunction contributes to risk of diabetes.
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Affiliation(s)
- J S Pankow
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - P A Decker
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - C Berardi
- Department of Medicine, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY
| | - N Q Hanson
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, Minneapolis, MN
| | - M Sale
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA
| | - W Tang
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - A M Kanaya
- Department of Medicine, University of California, San Francisco, CA
| | - N B Larson
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - M Y Tsai
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Minnesota, Minneapolis, MN
| | - C L Wassel
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Colchester, VT, USA
| | - S J Bielinski
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
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Ley K, Pramod AB, Croft M, Ravichandran KS, Ting JP. How Mouse Macrophages Sense What Is Going On. Front Immunol 2016; 7:204. [PMID: 27313577 PMCID: PMC4890338 DOI: 10.3389/fimmu.2016.00204] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/10/2016] [Indexed: 01/26/2023] Open
Abstract
Macrophages are central to both innate and adaptive immunity. With few exceptions, macrophages are the first cells that sense trouble and respond to disturbances in almost all tissues and organs. They sense their environment, inhibit or kill pathogens, take up apoptotic and necrotic cells, heal tissue damage, and present antigens to T cells. Although the origins (yolk sac versus monocyte-derived) and phenotypes (functions, gene expression profiles, surface markers) of macrophages vary between tissues, they have many receptors in common that are specific to one or a few molecular species. Here, we review the expression and function of almost 200 key macrophage receptors that help the macrophages sense what is going on, including pathogen-derived molecules, the state of the surrounding tissue cells, apoptotic and necrotic cell death, antibodies and immune complexes, altered self molecules, extracellular matrix components, and cytokines, including chemokines.
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Affiliation(s)
- Klaus Ley
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, USA; Department of Bioengineering, University of California San Diego, La Jolla, CA, USA
| | - Akula Bala Pramod
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology , La Jolla, CA , USA
| | - Michael Croft
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology , La Jolla, CA , USA
| | - Kodi S Ravichandran
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia , Charlottesville, VA , USA
| | - Jenny P Ting
- Department of Genetics, The Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill , Chapel Hill, NC , USA
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Bonaventura A, Montecucco F, Dallegri F. Cellular recruitment in myocardial ischaemia/reperfusion injury. Eur J Clin Invest 2016; 46:590-601. [PMID: 27090739 DOI: 10.1111/eci.12633] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 04/17/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Myocardial infarction (MI) is strictly linked to atherosclerosis. Beyond the mechanical narrowing of coronary vessels lumen, during MI a great burden of inflammation is carried out. One of the crucial events is represented by the ischaemia/reperfusion injury, a complex event involving inflammatory cells (such as neutrophils, platelets, monocytes/macrophages, lymphocytes and mast cells) and key activating signals (such as cytokines, chemokines and growth factors). Cardiac repair following myocardial infarction is dependent on a finely regulated response involving a sequential recruitment and the clearance of different subsets of inflammatory cells. MATERIALS AND METHODS This narrative review was based on the works detected on PubMed and MEDLINE up to November 2015. RESULTS Infarct healing classically follows three overlapping phases: the inflammatory phase, in which the innate immune pathways are activated and inflammatory leucocytes are recruited in order to clear the wound from dead cells; the proliferative phase, characterized by the suppression of pro-inflammatory signalling and infiltration of 'repairing' cells secreting matrix proteins in the injured area; and the maturation phase, which is associated with the quiescence and the elimination of the reparative cells together with cross-linking of the matrix. All these phases are timely regulated by the production of soluble mediators, such as cytokines, chemokines and growth factors. CONCLUSION Targeting inflammatory cell recruitment early during reperfusion and healing might be promising to selectively inhibit injury and favour repair. This approach might substantially improve adverse postischaemic left ventricle remodelling, characterized by dilation, hypertrophy of viable segments and progressive dysfunction.
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Affiliation(s)
- Aldo Bonaventura
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS AOU San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS AOU San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Franco Dallegri
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy.,IRCCS AOU San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
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Conceição J, Davis R, Carneiro PP, Giudice A, Muniz AC, Wilson ME, Carvalho EM, Bacellar O. Characterization of Neutrophil Function in Human Cutaneous Leishmaniasis Caused by Leishmania braziliensis. PLoS Negl Trop Dis 2016; 10:e0004715. [PMID: 27167379 PMCID: PMC4864077 DOI: 10.1371/journal.pntd.0004715] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 04/26/2016] [Indexed: 02/07/2023] Open
Abstract
Infection with different Leishmania spp. protozoa can lead to a variety of clinical syndromes associated in many cases with inflammatory responses in the skin. Although macrophages harbor the majority of parasites throughout chronic infection, neutrophils are the first inflammatory cells to migrate to the site of infection. Whether neutrophils promote parasite clearance or exacerbate disease in murine models varies depending on the susceptible or resistant status of the host. Based on the hypothesis that neutrophils contribute to a systemic inflammatory state in humans with symptomatic L. braziliensis infection, we evaluated the phenotype of neutrophils from patients with cutaneous leishmaniasis (CL) during the course of L. braziliensis infection. After in vitro infection with L. braziliensis, CL patient neutrophils produced more reactive oxygen species (ROS) and higher levels of CXCL8 and CXCL9, chemokines associated with recruitment of neutrophils and Th1-type cells, than neutrophils from control healthy subjects (HS). Despite this, CL patient and HS neutrophils were equally capable of phagocytosis of L. braziliensis. There was no difference between the degree of activation of neutrophils from CL versus healthy subjects, assessed by CD66b and CD62L expression using flow cytometry. Of interest, these studies revealed that both parasite-infected and bystander neutrophils became activated during incubation with L. braziliensis. The enhanced ROS and chemokine production in neutrophils from CL patients reverted to baseline after treatment of disease. These data suggest that the circulating neutrophils during CL are not necessarily more microbicidal, but they have a more pro-inflammatory profile after parasite restimulation than neutrophils from healthy subjects. Leishmania spp. are protozoan parasites that cause a spectrum of human diseases, and L. braziliensis causes chronic inflammatory skin lesions in residents of endemic regions of Latin America. Leishmania are obligate intracellular parasites in mammalian hosts, found in macrophages throughout infection. Nonetheless, other cell types including neutrophils also take up the parasite, but the role of neutrophils throughout chronic leishmaniasis remains unclear. We analyzed circulating neutrophils from patients in northeast Brazil with cutaneous leishmaniasis (CL) caused by L. braziliensis, compared to healthy controls from the same region. Our data revealed that neutrophils from both infected and healthy hosts took up comparable numbers of parasites, and parasite phagocytosis induced similar degrees of neutrophil activation. However, CL patient neutrophils produced more reactive oxidants than control neutrophils, and increased amounts of the chemokines CXCL8 and CXCL9 after parasite exposure. Interestingly, according to surface markers of PMN activation (CD62L, CD66b), we found that L. braziliensis activates both infected and uninfected “bystander” neutrophils from both patients and controls. Importantly, repeated measures showed the production of reactive oxidants and chemokine release were significantly decreased after therapeutic cure of infection. These data suggest that CL promotes a heightened inflammatory state in circulating neutrophils during active infection.
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Affiliation(s)
- Jacilara Conceição
- Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Richard Davis
- Interdisciplinary Program in Immunology, University of Iowa, Iowa City, Iowa, United States of America
| | - Pedro Paulo Carneiro
- Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Angela Giudice
- Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Aline C. Muniz
- Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Mary E. Wilson
- Interdisciplinary Program in Immunology, University of Iowa, Iowa City, Iowa, United States of America
- Department of Internal Medicine and Microbiology, University of Iowa, Iowa City, Iowa, United States of America
- Department of Veterans’ Affairs Medical Center, Iowa City, Iowa, United States of America
| | - Edgar M. Carvalho
- Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, Salvador, Bahia, Brazil
- Instituto Nacional de Ciência e Tecnologia de Doenças Tropicais - INCT-DT (CNPq/MCT), Salvador, Bahia, Brazil
- Centro de Pesquisa Gonçalo Moniz, FIOCRUZ – BA, Salvador, Bahia, Brazil
| | - Olívia Bacellar
- Serviço de Imunologia, Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, Salvador, Bahia, Brazil
- Instituto Nacional de Ciência e Tecnologia de Doenças Tropicais - INCT-DT (CNPq/MCT), Salvador, Bahia, Brazil
- * E-mail:
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Psarros C, Economou EK, Koutsilieris M, Antoniades C. Statins as Pleiotropic Modifiers of Vascular Oxidative Stress and Inflammation. J Crit Care Med (Targu Mures) 2015; 1:43-54. [PMID: 29967815 DOI: 10.1515/jccm-2015-0007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 04/20/2015] [Indexed: 11/15/2022] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the industrialized world and in the future is expected to be the number one killer worldwide. The main cause underlying CVD is atherosclerosis. A key event in atherosclerosis initiation and progression is oxidative stress through the production of reactive oxygen species as well as endothelial dysfunction. Several pro- inflammatory and anti-inflammatory cytokines and proteins are involved in this process, complemented by activation of adhesion molecules that promote leukocyte rolling, tethering and infiltration into the sub-endothelial space. Statins represent the agent of choice since numerous clinical trials have verified that their pharmacological action extends beyond lipid lowering. Statins demonstrate direct anti-oxidant effects by scavenging free radicals and stimulating anti-oxidant enzymes while acting as regulators for cytokine, protein and adhesion molecule expression, all of which are involved in the atherosclerotic process. Statin use is considered one of the most efficient currently used interventions in managing CVD with the likely hood of remaining so in the near future.
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Affiliation(s)
- Costas Psarros
- Department of Experimental Physiology, Medical School, National and Kapodistrian, University of Athens, Athens, Greece
| | - Evangelos K Economou
- Department of Experimental Physiology, Medical School, National and Kapodistrian, University of Athens, Athens, Greece
| | - Michael Koutsilieris
- Department of Experimental Physiology, Medical School, National and Kapodistrian, University of Athens, Athens, Greece
| | - Charalambos Antoniades
- Radcliffe Department of Medicine, Cardiovascular Medicine Division, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
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Furmanski AL, Barbarulo A, Solanki A, Lau CI, Sahni H, Saldana JI, D'Acquisto F, Crompton T. The transcriptional activator Gli2 modulates T-cell receptor signalling through attenuation of AP-1 and NFκB activity. J Cell Sci 2015; 128:2085-95. [PMID: 25908851 PMCID: PMC4450292 DOI: 10.1242/jcs.165803] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 03/30/2015] [Indexed: 01/20/2023] Open
Abstract
Different tissues contain diverse and dynamic cellular niches, providing distinct signals to tissue-resident or migratory infiltrating immune cells. Hedgehog (Hh) proteins are secreted inter-cellular signalling molecules, which are essential during development and are important in cancer, post-natal tissue homeostasis and repair. Hh signalling mediated by the Hh-responsive transcription factor Gli2 also has multiple roles in T-lymphocyte development and differentiation. Here, we investigate the function of Gli2 in T-cell signalling and activation. Gene transcription driven by the Gli2 transcriptional activator isoform (Gli2A) attenuated T-cell activation and proliferation following T-cell receptor (TCR) stimulation. Expression of Gli2A in T-cells altered gene expression profiles, impaired the TCR-induced Ca2+ flux and nuclear expression of NFAT2, suppressed upregulation of molecules essential for activation, and attenuated signalling pathways upstream of the AP-1 and NFκB complexes, leading to reduced activation of these important transcription factors. Inhibition of physiological Hh-dependent transcription increased NFκB activity upon TCR ligation. These data are important for understanding the molecular mechanisms of immunomodulation, particularly in tissues where Hh proteins or other Gli-activating ligands such as TGFβ are upregulated, including during inflammation, tissue damage and repair, and in tumour microenvironments.
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Affiliation(s)
- Anna L Furmanski
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Alessandro Barbarulo
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Anisha Solanki
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Ching-In Lau
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Hemant Sahni
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Jose Ignacio Saldana
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Fulvio D'Acquisto
- Centre for Biochemical Pharmacology, William Harvey Research Institute, QMUL, London EC1M 6BQ, UK
| | - Tessa Crompton
- Immunobiology Section, Institute of Child Health, University College London, London WC1N 1EH, UK
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Wu Y, Ren J, Zhou B, Ding C, Chen J, Wang G, Gu G, Liu S, Li J. Laser speckle contrast imaging for measurement of hepatic microcirculation during the sepsis: a novel tool for early detection of microcirculation dysfunction. Microvasc Res 2014; 97:137-46. [PMID: 25446370 DOI: 10.1016/j.mvr.2014.10.006] [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: 06/10/2014] [Revised: 09/04/2014] [Accepted: 10/17/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Sepsis is a fatal systemic inflammatory response syndrome caused by severe infection. The aim of this study was to measure hepatic microcirculation during the sepsis with laser speckle contrast imaging (LSCI), as well as investigating the underlying mechanisms. METHODS Sepsis was induced by cecal ligation and puncture. Rats were divided into the sham group and sepsis group. The hepatic microcirculation was monitored with LSCI. In addition, hepatic endothelial function (expression of cell adhesion molecules, coagulation and vascular permeability) and neutrophils accumulation in the liver were compared between the two groups. RESULTS During the sepsis, hepatic microcirculation decreased dramatically (290.3±70.1 LSPU (laser speckle perfusion units) at baseline vs. 230.4±60.7 LSPU at 12h vs. 125.2±25.4 LSPU at 48h, P<0.001). The rats developed hyperbilirubinemia since 6h. In the early phase of sepsis, the accumulation of neutrophils and formation of microthrombus increased rapidly. In the late phase, hepatic neutrophils accumulation was already at its maximum level. Meanwhile, the endothelial coagulation status shifted from procoagulation to anticoagulation. The vascular leakage was involved in the microcirculation dysfunction since 12h after sepsis. CONCLUSIONS Hepatic microcirculation dysfunction occurs early during the sepsis and is associated with liver injury. This microcirculation dysfunction is due to neutrophil-endothelium interactions, microthrombus formation and vascular leakage.
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Affiliation(s)
- Yin Wu
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Jianan Ren
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China.
| | - Bo Zhou
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Chao Ding
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Jun Chen
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Gefei Wang
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Guosheng Gu
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Song Liu
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
| | - Jieshou Li
- Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, PR China
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Gourevitch D, Kossenkov AV, Zhang Y, Clark L, Chang C, Showe LC, Heber-Katz E. Inflammation and Its Correlates in Regenerative Wound Healing: An Alternate Perspective. Adv Wound Care (New Rochelle) 2014; 3:592-603. [PMID: 25207202 DOI: 10.1089/wound.2014.0528] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 03/07/2014] [Indexed: 12/21/2022] Open
Abstract
Objective: The wound healing response may be viewed as partially overlapping sets of two physiological processes, regeneration and wound repair with the former overrepresented in some lower species such as newts and the latter more typical of mammals. A robust and quantitative model of regenerative healing has been described in Murphy Roths Large (MRL) mice in which through-and-through ear hole wounds in the ear pinna leads to scarless healing and replacement of all tissue through blastema formation and including cartilage. Since these mice are naturally autoimmune and display many aspects of an enhanced inflammatory response, we chose to examine the inflammatory status during regenerative ear hole closure and observed that inflammation has a clear positive effect on regenerative healing. Approach: The inflammatory gene expression patterns (Illumina microarrays) of early healing ear tissue from regenerative MRL and nonregenerative C57BL/6 (B6) strains are presented along with a survey of innate inflammatory cells found in this tissue type pre and postinjury. The role of inflammation on healing is tested using a COX-2 inhibitor. Innovation and Conclusion: We conclude that (1) enhanced inflammation is consistent with, and probably necessary, for a full regenerative response and (2) the inflammatory gene expression and cell distribution patterns suggest a novel mast cell population with markers found in both immature and mature mast cells that may be a key component of regeneration.
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Affiliation(s)
| | | | - Yong Zhang
- The Wistar Institute, Philadelphia, Pennsylvania
| | - Lise Clark
- The Wistar Institute, Philadelphia, Pennsylvania
| | - Celia Chang
- The Wistar Institute, Philadelphia, Pennsylvania
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Sun D, Nakao S, Xie F, Zandi S, Bagheri A, Kanavi MR, Samiei S, Soheili ZS, Frimmel S, Zhang Z, Ablonczy Z, Ahmadieh H, Hafezi-Moghadam A. Molecular imaging reveals elevated VEGFR-2 expression in retinal capillaries in diabetes: a novel biomarker for early diagnosis. FASEB J 2014; 28:3942-51. [PMID: 24903276 DOI: 10.1096/fj.14-251934] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 05/12/2014] [Indexed: 12/25/2022]
Abstract
Diabetic retinopathy (DR) is a microvascular complication of diabetes and a leading cause of vision loss. Biomarkers and methods for early diagnosis of DR are urgently needed. Using a new molecular imaging approach, we show up to 94% higher accumulation of custom designed imaging probes against vascular endothelial growth factor receptor 2 (VEGFR-2) in retinal and choroidal vessels of diabetic animals (P<0.01), compared to normal controls. More than 80% of the VEGFR-2 in the diabetic retina was in the capillaries, compared to 47% in normal controls (P<0.01). Angiography in rabbit retinas revealed microvascular capillaries to be the location for VEGF-A-induced leakage, as expressed by significantly higher rate of fluorophore spreading with VEGF-A injection when compared to vehicle control (26±2 vs. 3±1 μm/s, P<0.05). Immunohistochemistry showed VEGFR-2 expression in capillaries of diabetic animals but not in normal controls. Macular vessels from diabetic patients (n=7) showed significantly more VEGFR-2 compared to nondiabetic controls (n=5) or peripheral retinal regions of the same retinas (P<0.01 in both cases). Here we introduce a new approach for early diagnosis of DR and VEGFR-2 as a molecular marker. VEGFR-2 could become a key diagnostic target, one that might help to prevent retinal vascular leakage and proliferation in diabetic patients.
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Affiliation(s)
- Dawei Sun
- Center for Excellence in Functional and Molecular Imaging, Brigham and Women's Hospital, Boston, Massachusetts, USA; Department of Radiology and Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Angiogenesis Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA; Department of Ophthalmology, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shintaro Nakao
- Center for Excellence in Functional and Molecular Imaging, Brigham and Women's Hospital, Boston, Massachusetts, USA; Department of Radiology and Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Angiogenesis Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| | - Fang Xie
- Center for Excellence in Functional and Molecular Imaging, Brigham and Women's Hospital, Boston, Massachusetts, USA; Department of Radiology and Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Angiogenesis Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA; Department of Ophthalmology, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Souska Zandi
- Center for Excellence in Functional and Molecular Imaging, Brigham and Women's Hospital, Boston, Massachusetts, USA; Department of Radiology and Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Angiogenesis Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| | - Abouzar Bagheri
- Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mozhgan Rezaei Kanavi
- Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahram Samiei
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | | | - Sonja Frimmel
- Center for Excellence in Functional and Molecular Imaging, Brigham and Women's Hospital, Boston, Massachusetts, USA; Department of Radiology and Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Angiogenesis Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| | - Zhongyu Zhang
- Center for Excellence in Functional and Molecular Imaging, Brigham and Women's Hospital, Boston, Massachusetts, USA; Department of Radiology and
| | - Zsolt Ablonczy
- Department of Ophthalmology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Hamid Ahmadieh
- Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Hafezi-Moghadam
- Center for Excellence in Functional and Molecular Imaging, Brigham and Women's Hospital, Boston, Massachusetts, USA; Department of Radiology and Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Angiogenesis Laboratory, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA;
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2-Arachidonoylglycerol modulates human endothelial cell/leukocyte interactions by controlling selectin expression through CB1 and CB2 receptors. Int J Biochem Cell Biol 2014; 51:79-88. [DOI: 10.1016/j.biocel.2014.03.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 03/10/2014] [Accepted: 03/28/2014] [Indexed: 12/17/2022]
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50
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Berardi C, Decker PA, Kirsch PS, de Andrade M, Tsai MY, Pankow JS, Sale MM, Sicotte H, Tang W, Hanson N, Polak JF, Bielinski SJ. Plasma and serum L-selectin and clinical and subclinical cardiovascular disease: the Multi-Ethnic Study of Atherosclerosis (MESA). Transl Res 2014; 163:585-92. [PMID: 24631064 PMCID: PMC4029851 DOI: 10.1016/j.trsl.2014.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/14/2014] [Accepted: 02/18/2014] [Indexed: 01/19/2023]
Abstract
L-selectin has been suggested to play a role in atherosclerosis. Previous studies on cardiovascular disease (CVD) and serum or plasma L-selectin are inconsistent. The association of serum L-selectin (sL-selectin) with carotid intima-media thickness, coronary artery calcium, ankle-brachial index (subclinical CVD), and incident CVD was assessed in 2403 participants in the Multiethnic Study of Atherosclerosis. Regression analysis and the Tobit model were used to study subclinical disease; Cox proportional hazards regression, for incident CVD. Mean age was 63 ± 10 years and 47% were male. Mean sL-selectin was significantly different across ethnicities. Within each race/ethnicity, sL-selectin was associated with age and sex; among non-Hispanic whites and African Americans, it was associated with smoking status and current alcohol use. sL-selectin levels did not predict subclinical or clinical CVD after correction for multiple comparisons. Conditional logistic regression models were used to study the association of plasma L-selectin and CVD in 154 incident CVD cases, and 306 age-, sex-, and ethnicity-matched control subjects. The median follow-up time was 8.5 years. L-selectin levels in plasma were significantly lower than in serum and the overall concordance was low. Plasma levels were not associated with CVD. In conclusion, in this large, multiethnic population, soluble L-selectin levels did not predict clinical or subclinical CVD.
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Affiliation(s)
- Cecilia Berardi
- Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minn
| | - Paul A Decker
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minn
| | - Phillip S Kirsch
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minn
| | - Mariza de Andrade
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minn
| | - Michael Y Tsai
- Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minn
| | - James S Pankow
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, Minn
| | - Michele M Sale
- Center for Public Health Genomics, University of Virginia, Charlottesville, Va
| | - Hugues Sicotte
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minn
| | - Weihong Tang
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, Minn
| | - Naomi Hanson
- Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minn
| | - Joseph F Polak
- Department of Radiology, Tufts Medical Center, Tufts University School of Medicine, Boston, Mass
| | - Suzette J Bielinski
- Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic College of Medicine, Rochester, Minn.
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