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      Call for Papers: Green Renal Replacement Therapy: Caring for the Environment

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      About Blood Purification: 2.2 Impact Factor I 5.8 CiteScore I 0.782 Scimago Journal & Country Rank (SJR)

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      Involvement of Endothelial Cell Adhesion Molecules in the Development of Anti-Thy-1 Nephritis

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          Abstract

          To study an involvement of glomerular endothelial cells in the development of anti-Thy-1 nephritis, we examined the expression of endothelial cell adhesion molecules during the course of this model. Ribonuclease protection assay elucidated that expression of mRNA for intercellular adhesion molecule-1 (ICAM-1) was markedly enhanced in the glomeruli with a peak at 2 h (6.5-fold, p < 0.05) after the anti-Thy-1 antibody injection when mesangial cell lysis was recognized and IL-1β mRNA expression was induced in the glomeruli. The glomerular ICAM-1 was predominantly localized in the endothelial cells and was intensely immunostained at day 1 in the glomerular endothelial cells. In contrast, platelet endothelial cell adhesion molecule-1 (PECAM-1) and vascular endothelial-cadherin mRNA expression increased gradually with a peak at day 6 (2.6-fold (p < 0.05) and 4.2-fold (p < 0.05), respectively) in the glomeruli with mesangial proliferative lesion. PECAM-1 was also immunolocalized in the glomerular endothelial cells and the immunoreactivity was greatly enhanced at day 6. Glomerular expression of vascular cell adhesion molecule-1 and endothelial leukocyte adhesion molecule-1 (E-selectin) was unchanged at a low level during the course of anti-Thy-1 nephritis. Blocking of ICAM-1 by administration of anti-ICAM-1 antibody showed significant decrease in the number of polymorphonuclear leukocytes accumulating in the glomeruli by 45.7% (9.4 ± 0.2 vs. 5.1 ± 0.1 per glomerular cross section, p < 0.01) at 2 h. These results suggest a significant involvement of glomerular endothelial cells in the development and repair of anti-Thy-1 nephritis via direct or indirect intercellular interactions between mesangial cells and glomerular endothelial cells.

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          VCAM-1 on activated endothelium interacts with the leukocyte integrin VLA-4 at a site distinct from the VLA-4/fibronectin binding site.

          Mariano J. Elices, Laurelee Osborn, Yoshikazu Takada … (1990)
          Cytokine-activated human endothelial cells express vascular cell adhesion molecule-1 (VCAM-1), which binds lymphocytes. We now identify the integrin VLA-4 as a receptor for VCAM-1 because VLA-4 surface expression on K-562 cells (following transfection of the VLA alpha 4 subunit cDNA) resulted in specific cell adhesion to VCAM-1, and anti-VLA-4 antibodies completely inhibited VCAM-1-dependent cell-cell attachment. In addition, VLA-4 expression allowed K-562 cells to attach to the heparin II binding region (FN-40) of fibronectin. However, VLA-4/VCAM-1 and VLA-4/FN-40 interactions are readily distinguishable: only the former was inhibited by the anti-VLA-4 monoclonal antibody HP1/3, and only the latter was inhibited by soluble FN-40. The VCAM-1/VLA-4 ligand-receptor pair may play a major role in the recruitment of mononuclear leukocytes to inflammatory sites in vivo.
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            The molecular organization of endothelial cell to cell junctions: differential association of plakoglobin, beta-catenin, and alpha- catenin with vascular endothelial cadherin (VE-cadherin)

            M Corada, MG Lampugnani, L Caveda … (1995)
            In this paper we report that the assembly of interendothelial junctions containing the cell type-specific vascular endothelial cadherin (VE- cadherin or cadherin-5) is a dynamic process which is affected by the functional state of the cells. Immunofluorescence double labeling of endothelial cells (EC) cultures indicated that VE-cadherin, alpha- catenin, and beta-catenin colocalized in areas of cell to cell contact both in sparse and confluent EC monolayers. In contrast, plakoglobin became associated with cell-cell junctions only in tightly confluent cells concomitantly with an increase in its protein and mRNA levels. Furthermore, the amount of plakoglobin coimmunoprecipitated with VE- cadherin, increased in closely packed monolayers. Artificial wounding of confluent EC monolayers resulted in a major reorganization of VE- cadherin, alpha-catenin, beta-catenin, and plakoglobin. All these proteins decreased in intensity at the boundaries of EC migrating into the lesion. In contrast, EC located immediately behind the migrating front retained junctional VE-cadherin, alpha-catenin, and beta-catenin while plakoglobin was absent from these sites. In line with this observation, the amount of plakoglobin coimmunoprecipitated with VE- cadherin decreased in migrating EC. These data suggest that VE- cadherin, alpha-catenin, and beta-catenin are already associated with each other at early stages of intercellular adhesion and become readily organized at nascant cell contacts. Plakoglobin, on the other hand, associates with junctions only when cells approach confluence. When cells migrate, this order is reversed, namely, plakoglobin dissociates first and, then, VE-cadherin, alpha-catenin, and beta-catenin disassemble from the junctions. The late association of plakoglobin with junctions suggests that while VE-cadherin/alpha-catenin/beta- catenin complex can function as an early recognition mechanism between EC, the formation of mature, cytoskeleton-bound junctions requires plakoglobin synthesis and organization.
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              Migration of monocytes across endothelium and passage through extracellular matrix involve separate molecular domains of PECAM-1

              E Polizzi, F Liao, HK Huynh … (1995)
              During the inflammatory response, the adhesion molecule PECAM plays a crucial role in transendothelial migration, the passage of leukocytes across endothelium. We report here an additional role for PECAM in the subsequent migration of monocytes through the subendothelial extracellular matrix. PECAM has six immunoglobulin (Ig) superfamily domains. Monoclonal antibodies whose epitopes map to domains 1 and/or 2 selectively block monocyte migration through the endothelial junction, whereas those that map to domain 6 block only the migration through the extracellular matrix, trapping the monocyte between the endothelium and its basal lamina. Therefore, transendothelial migration (diapedesis) and passage through extracellular matrix (interstitial migration) are distinct and separable phases of monocyte emigration. Furthermore, distinct and separate Ig domains of PECAM are involved in mediating these two steps.
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                Author and article information

                Journal
                Journal ID (publisher-id): EXN
                Journal ID (nlm-ta): Nephron Exp Nephrol
                Journal ID (doi): 10.1159/issn.1660-2129
                Title: Cardiorenal Medicine
                Publisher: S. Karger AG
                ISSN (Electronic): 1660-2129
                Publication date Subscription-year: 2002
                Publication date (Print): 2002
                Publication date (Electronic): 09 October 2002
                Volume: 10
                Issue: 5-6
                Pages: 338-347
                Affiliations
                aDepartment of Structural Pathology, Institute of Nephrology, Faculty of Medicine, Niigata University, Niigata, Japan; bDepartment of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan and cDepartment of Immunology, The Scripps Research Institute, La Jolla, Calif., USA
                Article
                Publisher ID: 65298 Other ID: Exp Nephrol 2002;10:338–347
                DOI: 10.1159/000065298
                PubMed ID: 12381918
                SO-VID: b4bb42b1-5739-486f-8ca7-56f284b2fb2e
                Copyright © © 2002 S. Karger AG, Basel
                License:

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                Date received : 26 April 1999
                Date accepted : 17 July 2001
                Page count
                Figures: 8, References: 39, Pages: 10
                Categories
                Subject: Original Paper

                ScienceOpen disciplines: Cardiovascular Medicine,Nephrology
                Keywords: Glomerular endothelial cell,ICAM-1,Anti-Thy-1 nephritis
                Data availability:
                ScienceOpen disciplines: Cardiovascular Medicine, Nephrology
                Keywords: Glomerular endothelial cell, ICAM-1, Anti-Thy-1 nephritis

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