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Gauthier T, Filloux M, Guillaudeau A, Essig M, Bibes R, Pacha AF, Piver P, Aubard Y, Marquet P, Drouet M. Uterus human leucocyte antigen expression in the perspective of transplantation. J Obstet Gynaecol Res 2016; 42:1789-1795. [DOI: 10.1111/jog.13107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 05/09/2016] [Accepted: 06/19/2016] [Indexed: 01/22/2023]
Affiliation(s)
- Tristan Gauthier
- Obstetrics and Gynecology Department; CHU Limoges; France
- UMR-850 INSERM; University of Medicine; Limoges France
| | - Matthieu Filloux
- Laboratory of Immunology and Immunogenetics; CHU Limoges; France
| | | | - Marie Essig
- Nephrology, Dialysis; Transplantation CHU Limoges; France
| | - Romain Bibes
- University of Limoges; EA 3842 Homéostasie Cellulaire et Pathologies, University of Medicine; Limoges France
| | - Adam Fodil Pacha
- Laboratory of Immunology and Immunogenetics; CHU Limoges; France
| | - Pascal Piver
- Obstetrics and Gynecology Department; CHU Limoges; France
- UMR-850 INSERM; University of Medicine; Limoges France
| | - Yves Aubard
- Obstetrics and Gynecology Department; CHU Limoges; France
- UMR-850 INSERM; University of Medicine; Limoges France
| | | | - Mireille Drouet
- Laboratory of Immunology and Immunogenetics; CHU Limoges; France
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Capillary dilation and rarefaction are correlated with intracapillary inflammation in antibody-mediated rejection. J Immunol Res 2014; 2014:582902. [PMID: 24741607 PMCID: PMC3987932 DOI: 10.1155/2014/582902] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Accepted: 12/31/2013] [Indexed: 01/09/2023] Open
Abstract
Antibody-mediated rejection (ABMR) remains one of the major causes of graft loss after renal transplantation. It is dominated by endothelial damage in microcirculation. Clarifying the mechanism of microcirculating damage is obviously a key step to understand the pathogenesis of ABMR. Here we characterized capillary variation in ABMR and its possible mechanisms. Compared with T cell-mediated rejection and stable grafts, there was a significant dilation and rarefaction in peritubular capillaries (PTCs) of the ABMR group; Image-Pro Plus revealed a significantly larger intra-PTC area. Interestingly, the dilation of PTCs was strongly correlated with the intra-PTC cell counting. Moreover, peritubular capillary inflammation is correlated with in situ T-bet expression, and there was a good correlation between the intra-PTC expression of T-bet and the PTC diameter. HIF-1α up-regulation could be observed in ABMR but it was not necessary for capillary dilation. In general, ABMR is characterized with early capillary dilation and rarefaction; our data confirmed that the dilation is strongly correlated with intracapillary inflammation, which in turn is correlated with in situ T-bet expression. T-bet plays an important role in the development of microcirculating injury, and thus it is a potential target for the treatment of ABMR.
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Ye S, Tan L, Ma J, Shi Q, Li J. Polyunsaturated docosahexaenoic acid suppresses oxidative stress induced endothelial cell calcium influx by altering lipid composition in membrane caveolar rafts. Prostaglandins Leukot Essent Fatty Acids 2010; 83:37-43. [PMID: 20206488 DOI: 10.1016/j.plefa.2010.02.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2009] [Revised: 01/22/2010] [Accepted: 02/02/2010] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To determine whether DHA suppresses oxidative stress induced endothelial cell calcium influx by altering lipid composition and TRPC1 distribution in membrane rafts. METHODS Endothelial cells (EC) were pretreated with DHA or stearic acid, then incubated for another 3h with media containing H(2)O(2). Membrane lipid rafts were isolated using the discontinuous sucrose density gradient ultracentrifugation method. Intracellular calcium was detected with laser scanning confocal microscope. TRPC1 protein in membrane fractions was detected by immunoblotting. Membrane fatty acids compositions were analyzed by gas chromatography; raft cholesterol level was assayed by an Amplex Red Cholesterol Assay kit, and DAG concentration was quantified by a DAG kinase assay. RESULTS DHA significantly reduced oxidative stress induced calcium influx; pretreated with DHA the n-3 PUFAs were significantly increased in raft fractions, as well as saturated myristic acid, palmitic acid content of membrane rafts in EC; while the stearic acid, monounsaturated oleic acid and cis-oleic acid were decreased. Incubation with DHA also significantly reduced the amount of SM and cholesterol levels in the raft. Interestingly, we fractioned plasma membrane subcellular compartments and discovered that certain amounts of TRPC1 existed in detergent-resistant plasma membrane fractions of EC. After DHA treatment, TRPC1 was partly displaced from lipid raft to detergent-soluble membrane fractions. CONCLUSIONS DHA significantly reduces oxidative stress induced endothelial calcium influx, this effect might be associated with, at least in part, altered raft lipid environment, and suppresses TRPC1-mediated calcium signaling pathway by partially displacing TRPC1 from membrane caveolar lipid rafts.
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Affiliation(s)
- Sheng Ye
- Institute of Hepatobiliary Surgery, Chinese PLA General Hospital, Beijing 100853, China.
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Endothelial transcripts uncover a previously unknown phenotype: C4d-negative antibody-mediated rejection. Curr Opin Organ Transplant 2010; 15:42-8. [DOI: 10.1097/mot.0b013e3283352a50] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Sis B, Jhangri GS, Bunnag S, Allanach K, Kaplan B, Halloran PF. Endothelial gene expression in kidney transplants with alloantibody indicates antibody-mediated damage despite lack of C4d staining. Am J Transplant 2009; 9:2312-23. [PMID: 19681822 DOI: 10.1111/j.1600-6143.2009.02761.x] [Citation(s) in RCA: 367] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Anti-HLA alloantibody is a risk factor for graft loss, but does not indicate which kidneys are experiencing antibody-mediated rejection (ABMR). C4d staining in biopsies is specific for ABMR but insensitive. We hypothesized that altered expression of endothelial genes due to alloantibody acting on the microcirculation would be sensitive indicator of ABMR. We identified 119 endothelial-associated transcripts (ENDATs) from literature, and studied their expression by microarrays in 173 renal allograft biopsies for cause. Mean ENDAT expression was increased in all rejection but was higher in ABMR than in T-cell-mediated rejection and correlated with histopathologic lesions of ABMR, and alloantibody. Many individual ENDATs were increased in ABMR and predicted graft loss. Kidneys with high ENDATs and antibody showed increased lesions of ABMR and worse prognosis in comparison to controls. Only 40% of kidneys with high ENDAT expression and chronic ABMR or graft loss were diagnosed by C4d positivity. High ENDAT expression with antibody predicts graft loss with higher sensitivity (77% vs. 31%) and slightly lower specificity (71% vs. 94%) than C4d. The results were validated in independent set of 82 kidneys. High renal endothelial transcript expression in patients with alloantibody is indicator of active antibody-mediated allograft damage and poor graft outcome.
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Affiliation(s)
- Banu Sis
- Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada.
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Scherer A, Gwinner W, Mengel M, Kirsch T, Raulf F, Szustakowski JD, Hartmann N, Staedtler F, Engel G, Klupp J, Korn A, Kehren J, Haller H. Transcriptome changes in renal allograft protocol biopsies at 3 months precede the onset of interstitial fibrosis/tubular atrophy (IF/TA) at 6 months. Nephrol Dial Transplant 2009; 24:2567-75. [DOI: 10.1093/ndt/gfp183] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Yamakuchi M, Kirkiles-Smith NC, Ferlito M, Cameron SJ, Bao C, Fox-Talbot K, Wasowska BA, Baldwin WM, Pober JS, Lowenstein CJ. Antibody to human leukocyte antigen triggers endothelial exocytosis. Proc Natl Acad Sci U S A 2007; 104:1301-6. [PMID: 17229850 PMCID: PMC1783109 DOI: 10.1073/pnas.0602035104] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2006] [Indexed: 11/18/2022] Open
Abstract
Although antibodies to HLA play a role in the pathogenesis of diseases processes such as rejection of transplanted organs, the precise mechanisms by which antibodies cause tissue injury are not completely understood. We hypothesized that antibodies to host tissues cause inflammation in part by activating endothelial exocytosis of granules that contain prothrombotic mediators such as von Willebrand Factor (VWF) and proinflammatory mediators such as P-selectin. To test this hypothesis, we treated human endothelial cells with murine monoclonal antibody W6/32 to HLA class I and then measured exocytosis by the release of VWF and the externalization of P-selectin. Antibody to HLA activates endothelial exocytosis in a dose-dependent manner over time. The biologically active complement split product, C5a, adds a slight but significant increase to antibody induction of exocytosis. Antibody to HLA alone or with C5a did not damage the cells. Cross-linking of HLA appears to play a role in the ability of antibody to activate exocytosis, because the W6/32 monovalent Fab fragment did not activate VWF release, but the bivalent Fab'2 was effective in triggering exocytosis. To explore the in vivo effects of antibody upon graft injury, we infused W6/32 Fab'2 antibody to human HLA into severe combined immunodeficient/beige mice that had been transplanted with human skin grafts. Antibody to HLA activated exocytosis and inflammation in human skin grafts. Our data show that antibody to host antigens can activate human endothelial cell exocytosis and leukocyte trafficking. By triggering vascular inflammation, antibody activation of exocytosis may play a role in transplant rejection.
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Affiliation(s)
- Munekazu Yamakuchi
- *Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205; and
| | - Nancy C. Kirkiles-Smith
- Departments of Pathology
- Interdepartmental Program in Vascular Biology and Transplantation, Yale University, New Haven, CT 06536-0812
| | - Marcella Ferlito
- *Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205; and
| | | | - Clare Bao
- *Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205; and
| | | | | | | | - Jordan S. Pober
- Departments of Pathology
- Dermatology, and
- Immunobiology, and
- Interdepartmental Program in Vascular Biology and Transplantation, Yale University, New Haven, CT 06536-0812
| | - Charles J. Lowenstein
- Departments of Pathology and
- *Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205; and
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Thaunat O, Badet L, El-Jaafari A, Kanitakis J, Dubernard JM, Morelon E. Composite tissue allograft extends a helping hand to transplant immunologists. Am J Transplant 2006; 6:2238-42. [PMID: 16889601 DOI: 10.1111/j.1600-6143.2006.01486.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The first successful human hand transplantation, performed on September 1998, has translated the scope of 'composite tissue allotransplantation' from research concepts into clinical practice. Beyond microsurgical problems that have been overcome several years ago, the main obstacle that still prevents the generalization of composite tissue allotransplantation is immunologic. This review, which summarizes the evidence obtained both from experimental animal models and from the first recipients of a hand transplant, is focused on the two immunological characteristics of composite allografts that set them apart from other solid organ allografts: (i) they contain skin tissue that elicits a strong immune response; and (ii) they contain lymphoid tissues (such as bone marrow and lymph nodes) that have the potential both to attack the recipient, and also to down-modulate the host immune response and induce tolerance. While on one hand, the composite tissue allografts raise new challenges to transplant immunologists, on the other they provide answers to questions that have remained unresolved for a long time. In this sense, composite tissue allografts extend a helping hand to transplant immunologists.
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Affiliation(s)
- O Thaunat
- Institut National de la Santé et de la Recherche Médicale U681, Institut Biomédical des Cordeliers, Université Pierre et Marie Curie Paris VI, Paris, France.
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Schächinger V, Zeiher AM. Stem cells and cardiovascular and renal disease: today and tomorrow. J Am Soc Nephrol 2005; 16 Suppl 1:S2-6. [PMID: 15938024 DOI: 10.1681/asn.2004110971] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The traditional view that organs have only limited regenerative capacity has been challenged in recent years as adult bone marrow stem cells as well circulating progenitor cells have been identified to retain the plasticity to participate in neovascularization, a process so far believed not to be possible after birth. An organ that is damaged by ischemia causes the release of cytokines; these act via the flowing blood and stimulate the bone marrow, which then mobilizes progenitor cells to the blood and directs them to adhere to and migrate into the damaged organ. Thus, these progenitor cells most likely constitute a natural repair mechanism that counteracts degenerative or aging processes. On the basis of encouraging experimental data, first clinical trials have been established to demonstrate the safety and the feasibility of progenitor cell therapy in case of peripheral artery disease or myocardial infarction. Trials investigating injection of bone marrow or circulating progenitor cells into the coronary artery after an acute myocardial infarction not only demonstrates safety of the procedure but also gave hints toward efficacy. Nevertheless, these findings have to be validated by subsequent larger, prospective, randomized, controlled trials. There are also potential topics in nephrology, where modification of progenitor cell activity might be of benefit, such as renal ischemic disease, glomerular disease, and renal transplant vasculopathy. Finding a way to integrate the principle of progenitor cell action into therapeutic efforts might provide a completely new therapeutic strategy that not only attempts to retard disease progression but furthermore targets to regenerate damaged organs.
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Mengel M, Bogers J, Bosmans JL, Serón D, Moreso F, Carrera M, Gwinner W, Schwarz A, De Broe M, Kreipe H, Haller H. Incidence of C4d stain in protocol biopsies from renal allografts: results from a multicenter trial. Am J Transplant 2005; 5:1050-6. [PMID: 15816885 DOI: 10.1111/j.1600-6143.2005.00788.x] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
C4d staining of renal allografts is regarded as an in situ marker of active humoral rejection. Few data are available about the incidence of C4d deposition in protocol biopsies compared to indication biopsies. To evaluate whether center-specific factors influence the incidence of C4d detection, we performed a multicenter study. From three European centers, 551 protocol and 377 indication biopsies were reclassified according to the updated Banff criteria and stained for C4d. C4d results were recorded as diffuse or focal positive and statistically correlated to clinical parameters, morphology and graft survival. In the protocol biopsies, a diffuse C4d stain was found in 2.0%, and a focal stain in 2.4%. In indication biopsies, 12.2% were diffusely and 8.5% focally C4d positive (protocol:indication p < 0.0001). The incidence of C4d deposition varied significantly between centers, attributable to variable numbers of presensitized patients with more C4d positive indication and protocol biopsies. Diffuse and focal C4d stain correlated with morphology of humoral rejection in protocol as well as in indication biopsies. Protocol biopsies show a significantly lower incidence of C4d deposition than indication biopsies. Subclinical C4d detection in protocol biopsies had no significant impact on allograft survival in our series.
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Affiliation(s)
- Michael Mengel
- Institut fuer Pathologie, Medizinische Hochschule Hannover, Germany.
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Xiong W, Gao CJ, Lu XF, Cheng JQ, Li YP. Prolonged cold preservation promotes the recipient's cell participating in neointima formation but delays the later graft arteriosclerosis in rat model. Transplant Proc 2005; 37:312-5. [PMID: 15808628 DOI: 10.1016/j.transproceed.2004.12.202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chronic graft dysfunction is the greatest barrier to long-term graft survival, although the immediate outcome in organ transplantation has been greatly improved. Graft arteriosclerosis is a prominent feature of chronic graft dysfunction. Recipient progenitor cells have been shown to participate in neointimal development in graft arteriosclerosis. The present study investigated the role of recipient endothelial cells in the repair and remodeling after a cold preservation injury in an orthotopic cross-sex abdominal aortic allotransplantation model, namely female Wistar to male Sprague-Dawley rats. Grafts were preserved for 48 hours in 4 degrees C University of Wisconsin (UW) solution for a prolonged cold ischemia (PCI) group or preserved for <1 hour in the control group; or for <1 hour in the presence of feeding with cyclosporine (CyA). A direct in situ polymerase chain reaction (ISPCR) for the SRY gene showed SRY-marked endothelial and smooth muscle-like cells in neointima at 2 weeks in the PCI group, at 4 weeks in the control group, and rarely at 3 months in the CyA group. Staining by H&E showed the aortic graft intima to be thicker in the PCI than in the control group at 4 weeks, but thinning thereafter. The SRY-positive cells correlated with intimal thickness in the PCI and the control group (r = .801 and .825; P < .05 and <.05, respectively), but not in the CyA group (r = .247, P > .5). Our data suggest that prolonged cold preservation promotes recipient cell participation in graft arteriosclerosis after endothelium injury. The early neointimal formation via recipient cells incorporated into arteriosclerotic neointima may delay later intimal thickening. In the aortic allotransplantation model, prolonged cold ischemia may be beneficial for long-term graft survival due to early endothelial replacement. We hypothesize that controlled injury to the graft may serve as a new strategy for treatment of intimal thickening.
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Affiliation(s)
- W Xiong
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu 610041, People's Republic of China
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