Articles tagged "Endothelial cells"

2019 American Transplant Congress
Sphingosine 1-Phosphate Receptor 2 Regulates Migration through Endothelial Cell VCAM and Adherens Junctions
Y. Xiong¹, W. Piao¹, C. Brinkman¹, L. Li¹, J. Kulinski², A. Olivera², A. Cartier³, T. Hla³, K. Hippen⁴, B. Blazar⁴, S. Schwab⁵
¹Surgery, UMB, Baltimore, MD, ²NIH, Bethesda, MD, ³Boston Children's hospital, Boston, MA, ⁴U.Minnesota, Minneapolis, MN, ⁵NYU, NY, NY
*Purpose: Lymphatic endothelial cells (LEC) highly expres S1PR1 and S1PR2. The ligand S1P is produced by LEC and regulates T cell migration. The mechanisms of…
2019 American Transplant Congress
Use Of Perirenal Adipose Tissue As A Source Of Donor Cells Allowing Evaluation Of Endothelial Inflammation And Quality Of Expanded Criteria Kidneys
R. Boissier¹, L. Lyonnet², P. Francois³, M. Meunier⁴, B. Gondran-Tellier⁵, T. Legris⁶, J. Magalon⁵, C. Picard⁷, F. Dignat George⁵, E. Lechevallier⁸, G. Karsenty⁸, F. Sabatier⁹, P. Paul¹
¹INSERM 1263, Centre de recherche en cardiovasculaire et nutrition, INSERM, Aix Marseille Univ, Assistance Publique Hopitaux Marseille, Marseille, France, ²Vascular Biology and Hematology department, Assistance publique Hopitaux Marseille (AP-HM), Marseille, France, ³INSERM 1263, Centre de recherche en cardiovasculaire et nutrition, INSERM, Aix Marseille Univ., Marseille, France, ⁴Nephrology Dialysis and Renal Transplantation Center, AP-HM, Marseille, France, ⁵INSERM 1263, C2VN, INSERM, Aix Marseille Univ., Marseille, France, ⁶Nephrology Dialysis and Renal Transplantation Center, AP-HM, Marseille, France, ⁷Etablissement Français du Sang, Alpes Méditerranée, Marseille, France, ⁸Urology and Transplantation Unit , AP-HM, Marseille, France, ⁹INSERM 1263, Centre de recherche en cardiovasculaire et nutrition, INSERM, Aix Marseille Univ, Marseille, France
*Purpose: Use of expanded-criteria donor (ECD) kidneys is a perspective to overcome organ shortage. Age and donor-related co-morbidy factors are known to affect graft function…
2019 American Transplant Congress
Inhibition of mTORC2 Causes Hyper Phosphorylation of ERK Induced by Co-Ligation of HLA-I and II Antibody
Y. Jin¹, J. Sinnet-Smith², E. Rozengurt², E. F. Reed¹
¹Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, CA, ²Medicine, University of California Los Angeles, Los Angeles, CA
*Purpose: Transplant recipients developing donor specific antibodies (DSA) are at risk for antibody-mediated rejection (AMR). It has been reported that as many as 30% of…
2019 American Transplant Congress
Stabilization of Cell Junctions Ameliorates the Effects of Brain Death Induced Acute Lung Injury Post-Transplantation
D. P. Allen¹, Z. Tu¹, C. Wallace¹, C. Li¹, J. Kilkenny¹, K. J. Patel¹, D. Nord², S. N. Nadig¹, C. Atkinson²
¹Surgery, Medical University of South Carolina, CHARLESTON, SC, ²Microbiology & Immunology, Medical University of South Carolina, CHARLESTON, SC
*Purpose: Donor Brain death (BD) induces acute lung injury (BD-ALI), characterized by the breakdown of endo/epithelial barrier functions. These injuries are further exacerbated by ischemia…
2018 American Transplant Congress
Assessing the Impact of Flow in Hypothermic Machine Perfusion on Human Venous Endothelium Using a Novel Ex Vivo Model
Y. Marie,¹ W. Ries,² K. Patel,¹ C. Turnbull,² N. Jamil,⁴ H. Caldwell,³ R. Telfer,² D. Neil,⁵ J. Nath,¹ N. Inston.¹
¹Department of Renal Surgery, Queen Elizabeth Hospital, Birmingham, West Midlands, United Kingdom; ²College of Medical and Dental Sciences, University of Birmingham, Birmingham, West Midlands, United Kingdom; ³Division of Pathology Laboratories, Western General Hospital, Edinburgh, United Kingdom; ⁴Department of Cellular Pathology, Durham and Darlington NHS Foundation Trust, Newcastle, Newcastle Upon Tyne, United Kingdom; ⁵Department of Histopathology, University Hospitals Birmingham NHS Trust, Birmingham, West Midlands, United Kingdom.
BACKGROUNDHypothermic machine perfusion (HMP) involves dynamic flow of chilled preservation fluid through an allograft's vasculature. This study describes a simple, reproducible, human model that allows…
2018 American Transplant Congress
A Novel Endothelial Cell Based Complement Dependent Cytotoxicity Test in Kidney Transplantation
R. Lammerts,¹ J. van den Born,¹ W. Dam,¹ M. Seelen,¹ B. Hepkema,² B. Kroesen,² M. Daha,¹ R. Pol,³ S. Berger,¹ On behalf of the COMBAT Consortium.¹
¹Department of Nephrology, University Medical Centre Groningen, Groningen, Netherlands; ²Department of Immunology, University Medical Centre Groningen, Groningen, Netherlands; ³Department of Surgery, University Medical Centre Groningen, Groningen, Netherlands.
Introduction:Relevant alloantibodies in kidney transplantation comprise anti-HLA antibodies, blood group antibodies (ABO incompatible) and anti-endothelial cell antibodies (AECA) and can initiate antibody-mediated rejection (ABMR). ABMR…
2018 American Transplant Congress
Targeting LTβR Classical NFκB Signaling Facilitates Inflammation Resolution
W. Piao, Y. Xiong, L. Li, V. Saxena, J. Bromberg.
UMB, Baltimore.
Background:Contact hypersensitivity (CHS) is a reliable model to assess the immune cell-mediated cutaneous inflammatory response, which includes the three phases of priming/sensitization, elicitation, and resolution,…
2018 American Transplant Congress
Apoptotic Exosome-Like Vesicles Induce Endothelial Cell Plasticity
F. Migneault,^1,2,4 M. Dieudé,^1,2,4 J. Turgeon,^1,4 D. Beillevaire,^1,2,4 M-.P. Hardy,^2,3,4 C. Perreault,^2,3,4 M-.J. Hébert.^1,2,4
¹CRCHUM, Montreal, QC, Canada; ²Université de Montréal, Montreal, QC, Canada; ³IRIC, Montreal, QC, Canada; ⁴CNTRP, Montreal, QC, Canada.
Acute vascular rejection of renal allografts is associated with increased endothelial apoptosis which contributes to the development of transplant vasculopathy. We previously showed that apoptotic…
2018 American Transplant Congress
Involvement of PD-L1 Upregulation in Anti-A/B Antibody-Induced Graft Accommodation: Reduction of CD4 T Cell Allo-Response against Graft HLA Class II DR
K. Iwasaki,¹ Y. Miwa,¹ H. Hamana,³ H. Kishi,³ A. Muraguchi,³ K. Uchida,¹ T. Kobayashi.²
¹Kidney Disease and Transplant Immunology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan; ²Renal Transplant Surgery, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan; ³Immunology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan.
[Background] Antibodies against transplanted organs cause complement-independent graft injury, but there remain many unknown aspects of its mechanism, in particular its effect on allo-response to…
2018 American Transplant Congress
Endothelial Cell Heterogeneity Governs Basal and Inducible Inflammatory Responses Relevant to Allograft Injury
N. Valenzuela.
Pathology and Laboratory Medicine, UCLA, Los Angeles, CA.
PurposeTransplanted tissues are differentially susceptible to ischemia/reperfusion and rejection. Endothelial cells (EC) are active regulators of inflammation. But model EC may not adequately reflect the…