Articles tagged "Endothelial cells"

2018 American Transplant Congress
Recombinant Thrombomodulin alpha Attenuates Kidney Graft Damage after Long Cold Ischemia Time in a Rat Kidney Transplant Model
S. Tamaki,¹ K. Shinoda,¹ M. Shimoda,² S. Morita,¹ H. Asanuma,¹ M. Oya.¹
¹Urology, Keio University School of Medicine, Tokyo, Japan; ²Pathology, Keio University School of Medicine, Tokyo, Japan.
Objectives: Thrombomodulin (TM) extensively expresses on the endothelial cells in the steady state and is known to prevent hypercoagulation via combining with thrombin and inactivating…
2018 American Transplant Congress
Ultrastructural Changes in Lung Allografts: Endothelial Changes Correlate with Donor Specific Antibody & Antibody Mediated Rejection
M. Alexander, A. Bentall, P. Abell Aleff, J. Scott, A. Roden.
Mayo Clinic, Rochester, MN.
Introduction: Antibody mediated rejection (AMR) causes lung allograft (LA) injury. Challenges with C4d interpretation & lack of specific histological criteria account for difficulty in diagnosing…
2018 American Transplant Congress
Rapamycin Impairs Human Endothelial Cell Alloimmunogenicity Independent of PD-1/PD-1 Ligand Inhibitory Signaling
Q. Gao, V. Bendersky, A. Kirk, H. Xu.
Department of Surgery, Duke University Medical Center, Durham, NC.
Rapamycin prevents costimulation blockade (CoB)-resistant rejection in mice and primates, and early human data suggests a similar salutary effect. We have hypothesized that one mechanism…
2018 American Transplant Congress
Treg Regulate Distinct Lymphatic NFκB Signaling Pathways to Alter Migration and Immunity
W. Piao, Y. Xiong, L. Li, V. Saxena, J. Bromberg.
UMB, MD.
Background: Treg migration to the graft and draining lymph nodes is crucial for graft survival. Little is known about the molecular cues that regulate the…
2018 American Transplant Congress
CD40 Signaling in Proximal Tubules Regulates Fibrosis in Both Hypertension and Chronic Allograft Rejection
V. Bletsos, J. Breidenbach, S. Haller, S. Stepkowski.
University of Toledo College of Medicine and Life Sciences, Toledo, OH.
Background: We explored the role of CD40 signaling in kidney proximal tubule epithelial cells on renal interstitial fibrosis (IF) in two models: hypertension; and chronic…
2018 American Transplant Congress
CD4 T Cells Require Both S1PR1 and S1PR4 for Afferent Lymphatic Migration
Y. Xiong,¹ W. Piao,¹ C. Brinkman,¹ L. Li,¹ J. Kulinski,² A. Olivera,² A. Cartier,³ T. Hla,³ S. Schwab,⁴ K. Hippen,⁵ B. Blazar,⁵ J. Bromberg.¹
¹UMB, MD; ²NIH, MD; ³Boston Children's Hospital, MA; ⁴NYU, NY; ⁵U. Minnesota, MN.
Introduction: Sphingosine 1-phospate (S1P) receptor 1 (S1PR1) drives T cell migration from thymus into blood, and lymph nodes (LN) into efferent lymphatics. Whether S1PR1 and…
2018 American Transplant Congress
Lymphatic Endothelium Requires S1PR2 for T Cell Transendothelial Migration
Y. Xiong,¹ W. Piao,¹ C. Brinkman,¹ L. Li,¹ J. Kulinski,² A. Olivera,² A. Cartier,³ T. Hla,³ S. Schwab,⁴ K. Hippen,⁵ B. Blazar,⁵ J. Bromberg.¹
¹UMB, MD; ²NIH, MD; ³Boston Children's Hospital, MA; ⁴NYU, NY; ⁵U. Minnesota, MN.
Introduction: Sphingosine 1-phosphate (S1P) receptors 1 (S1PR1) and S1PR2 are highly expressed by lymphatic endothelial cells (LEC), while T cells express S1PR1 and S1PR4. S1P…
2018 American Transplant Congress
Lymphotoxin Beta Receptor Modulation in Lymphatic Endothelial Cells Alters Regulatory T Cell Dynamics
V. Saxena, W. Piao, Y. Xiong, L. Li, C. Wagner, J. Bromberg.
U Maryland, Baltimore, MD.
Background:Lymphotoxin beta receptor (LTβR) mediated signaling in lymphatic endothelium cells (LEC) is important for migration of regulatory T cells (Treg) to afferent lymphatic vessels (LV)…
2018 American Transplant Congress
Double Deficiency of Gelatinase-A and Gelatinase-B Does Not Protect against Hepatic Ischemia Reperfusion Injury
S. Duarte, P. Matian, S. Ma, R. Busuttil, A. Coito.
Dumont-UCLA Transplant Center, Los Angeles.
Gelatinases, consisting of gelatinase A (MMP-2; 72 KDa) and gelatinase B (MMP-9; 92KDa), are a subgroup of matrix metalloproteinases (MMPs) with key roles in a…
2018 American Transplant Congress
Endothelial Progenitor Cell-Derived Extracellular Vesicles Inhibit Kidney Ischemia-Reperfusion Injury through the Transfer of Specific microRNA and mRNA Coding for the Complement Inhibitors CD55, CD59, Factor H and for the Transcription Factor NRF2: Relevance for Delayed Kidney Graft Function
V. Cantaluppi,¹ D. Medica,¹ S. Dellepiane,¹ G. Merlotti,¹ A. Airoldi,¹ M. Quaglia,¹ G. Castellano,² L. Gesualdo,² G. Camussi.³
¹Nephrology and Kidney Transplantation Unit, University of Piemonte Orientale (UPO), Novara, Italy; ²Nephrology, Dialysis and Kidney Transplantation Unit, University of Bari, Bari, Italy; ³Department of Medical Sciences, University of Torino, Torino, Italy.
Complement activation and oxidative cell damage are hallmarks of delayed kidney graft function (DGF) due to ischemia-reperfusion injury (IRI). Endothelial progenitor cells (EPC) protect from…