Abstract:
BACKGROUND:It has been proposed that hyperacute rejection (HAR) of pig-to-primate vascularized xenografts is due in large part to ineffective regulation of recipient complement by pig complement regulatory proteins (CRPs), and indeed transgenic expression of human CRPs in pigs can prevent hyperacute rejection. However, at least one pig CRP (CD59) efficiently regulates human complement in vitro, suggesting that it is the level of expression of a particular CRP(s) rather than cross-species incompatibility that explains the HAR of porcine xenografts. We investigated the relative effectiveness of transgenically expressed pig and human CD59 in providing protection of mouse hearts from human complement in an ex vivo setting. METHODS:Transgenic mice expressing pig CD59 or human CD59 under the control of the human ICAM-2 promoter, which restricts expression in tissues to vascular endothelium, were used. Hearts from mice expressing similar levels of pig CD59 or human CD59 were perfused ex vivo with 10% human plasma and heart function was monitored for 60 min. Sections of perfused hearts were examined for deposition of the membrane attack complex (MAC). RESULTS:Control nontransgenic hearts (n=5) were rapidly affected by the addition of human plasma, with mean function falling to less than 10% of the initial level within 15 min. In contrast, hearts expressing either pig CD59 (n=6) or human CD59 (n=8) were protected from plasma-induced injury, maintaining 31 and 35% function, respectively, after 60 min of perfusion. MAC deposition was markedly reduced in both pig CD59 and human CD59 transgenic hearts compared to nontransgenic control hearts. CONCLUSIONS:When highly expressed on endothelium in transgenic mice, pig CD59 provided equivalent protection to human CD59 in a model of human complement-mediated xenograft rejection. Thus supranormal expression of endogenous porcine CRPs may be a feasible alternative to the expression of human CRPs in preventing HAR of pig-to-primate xenografts.
journal_name
Transplantationjournal_title
Transplantationauthors
Fisicaro N,Aminian A,Hinchliffe SJ,Morgan BP,Pearse MJ,D'Apice AJ,Cowan PJdoi
10.1097/00007890-200009270-00014subject
Has Abstractpub_date
2000-09-27 00:00:00pages
963-8issue
6eissn
0041-1337issn
1534-6080journal_volume
70pub_type
杂志文章相关文献
TRANSPLANTATION文献大全abstract:BACKGROUND:The once-daily (QD), prolonged-release formulation of tacrolimus has been shown to improve adherence versus twice-daily (BD) tacrolimus. Treatment nonadherence in transplant recipients has been associated with poor graft outcomes. METHODS:This open-label, parallel-group study randomized adults with end-stag...
journal_title:Transplantation
pub_type: 杂志文章,随机对照试验
doi:10.1097/TP.0b013e3182a203bd
更新日期:2013-11-27 00:00:00
abstract:BACKGROUND:More than 60% children with small bowel transplantation (SBTx) experience acute cellular rejection. PURPOSE/METHODS:To identify children at risk of rejection, donor- and third-party-induced proliferation of T-helper and T cytotoxic (Tc) cells, and their naïve and memory (M) subsets was evaluated simultaneou...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0b013e3181d98c0f
更新日期:2010-06-15 00:00:00
abstract:BACKGROUND:In response to a longstanding Federal mandate to minimize the role of geography in access to transplant in the United States, we assessed whether patient travel distance was associated with lung transplant outcomes. We focused on the posttransplant time period, when the majority of patient visits to a transp...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0000000000003129
更新日期:2020-11-01 00:00:00
abstract::Endothelial injury plays a central role in the pathophysiologic mechanisms underlying cardiac allograft vasculopathy (CAV). Although the accelerated course of CAV and its localization to the allograft support an important role for the alloimmune response, there is considerable evidence implicating lipoprotein abnormal...
journal_title:Transplantation
pub_type: 杂志文章,评审
doi:10.1097/01.TP.0000080981.90718.EB
更新日期:2003-09-27 00:00:00
abstract::Brainstem death is associated with endocrine and metabolic alterations that can result in donor hemodynamic instability. It has been suggested that these changes can be reversed through hormonal manipulation of the donor. We measured thyroid hormone levels (free triiodothyronine [fT3], free tetraiodothyronine [fT4], r...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199403150-00007
更新日期:1994-03-15 00:00:00
abstract:BACKGROUND:We previously reported that no cytotoxic T-lymphocyte precursor frequencies (CTLpf) were found in 60% of patients on azathioprine or mycophenolate mofetil+Pred long after kidney transplantation. We questioned whether the absence of donor-specific CTLpf was associated with low levels of stimulatory Th1 (tumor...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0b013e3181a36c85
更新日期:2009-05-27 00:00:00
abstract:INTRODUCTION:The importance of HLA matching for renal transplantation outcomes has been appreciated for several decades. It has been hypothesized that as pharmacologic immunosuppression becomes stronger and more specific, the impact of HLA matching may be vanishing. Mycophenolate Mofetil (MMF) has been demonstrated to ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-200102150-00010
更新日期:2001-02-15 00:00:00
abstract:BACKGROUND:For cyclosporine (CsA), 2-hr postdose level (C2) is the best single time point predictor of the area under the curve and a critical measure for effective dosing. The therapeutic CsA microemulsion (Neoral) C2 range in de novo heart transplant patients remains to be determined. PURPOSE:The purpose of this stu...
journal_title:Transplantation
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1097/TP.0b013e318169bf43
更新日期:2008-04-15 00:00:00
abstract::The ability of the popliteal lymph node assay (PLNA) To detect host-versus-graft activity in response to H-Y antigens was investigated in the rat by using presensitized recipients. It was shown that significant popliteal lymph node (PLN) enlargement in response to H-Y-incompatible lymphocytes from syngeneic donors cou...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198103000-00013
更新日期:1981-03-01 00:00:00
abstract:BACKGROUND:Although it is generally considered that livers with moderate steatosis can be safely used in the setting of living-donor liver transplantation, the effect of the regenerative process of such a graft on postoperative liver function is incompletely understood. We assessed the morphologic and functional altera...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/01.TP.0000109777.51902.09
更新日期:2004-02-15 00:00:00
abstract:BACKGROUND:The shortage of cadaveric livers has sparked an interest in adult-to-adult living donor transplantation. Right lobe donor hepatectomy is frequently required to obtain a graft of adequate size for adult recipients. Careful donor selection is necessary to minimize complications and assure a functional graft. ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-200006150-00034
更新日期:2000-06-15 00:00:00
abstract:BACKGROUND:Renal transplant recipients have an increased incidence of cardiovascular disease, but less data exist about cerebrovascular atherosclerosis. In this study, we assessed the prevalence of carotid lesions as evaluated by B-mode ultrasonography in a group of renal transplant recipients, and we evaluated univari...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199902150-00005
更新日期:1999-02-15 00:00:00
abstract:BACKGROUND:Focal segmental glomerulosclerosis (FSGS), the second leading cause of end stage renal disease in children, appears to be increasing. Moreover, posttransplantation FSGS recurrence is a major problem, and there is concern that children receiving kidneys from living donors (LD) have increased recurrence risk. ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0b013e31829c2431
更新日期:2013-09-01 00:00:00
abstract:BACKGROUND:Accelerated arteriosclerosis limits the survival of transplanted hearts. We hypothesized that insulin-like growth factor-I (IGF-I) is crucial in accelerating transplant arteriosclerosis. Recently, we reported that exposure to IGF-I prior to transplantation accelerates transplant arteriosclerosis in the rat a...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199804270-00003
更新日期:1998-04-27 00:00:00
abstract::The proliferation and differentiation of donor hematopoietic progenitor cells in bone marrow transplantation (BMT) recipients is influenced by hematopoietic growth factors, which could derive from either T cells or adherent stromal bone marrow cells, or both. In this study of 20 BMT recipients, we asked whether T lymp...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199004000-00010
更新日期:1990-04-01 00:00:00
abstract::Treatment of BN recipients with soluble WAG/Rij histocompatibility antigens (HCA) did not produce prolongation of (WAG/Rij X BN) F1 heart allografts but resulted in specific sensitization of the recipients in most cases. Three different anti-WAG/Rij sera (ADS) were tested, either alone or complexed in equivalence to 0...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-197606000-00003
更新日期:1976-06-01 00:00:00
abstract:BACKGROUND:Although used for more than 20 years, optimal dosing strategies of most immunosuppressants have never been determined. Tacrolimus, one of the newer agents used in solid-organ transplantation, is gaining increasing popularity because of its ability to reverse refractory rejection in cyclosporine-treated patie...
journal_title:Transplantation
pub_type: 临床试验,杂志文章
doi:10.1097/00007890-200210270-00014
更新日期:2002-10-27 00:00:00
abstract:BACKGROUND:Long-term results of prospective randomized trials comparing triple immunosuppressive strategies combining tacrolimus (TAC) or cyclosporine A (CsA) with mycophenolate mofetil (MMF) and steroids after heart transplantation (HTX) are rarely published. Therefore, we collected long-term follow-up data of an inte...
journal_title:Transplantation
pub_type: 杂志文章,随机对照试验
doi:10.1097/TP.0b013e318277e378
更新日期:2013-02-27 00:00:00
abstract::CD18 antibodies react with the common beta chain of the human leukocyte function antigen (LFA1)* and thus block the functions mediated by the three identified molecules in humans. A murine CD18 monoclonal antibody was infused in 8 leukemic patients receiving allogeneic T-depleted bone marrow transplantation in order t...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198903000-00014
更新日期:1989-03-01 00:00:00
abstract::Unstimulated whole saliva and serum samples were collected from ten allogeneic bone marrow transplant recipients before and after bone marrow transplantation, seven donors, and from twenty healthy individuals. Two patterns with regard to salivary IgA were found after transplantation. In five patients, a short-lasting ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198811000-00016
更新日期:1988-11-01 00:00:00
abstract::A novel method for quantifying the fatty change of the graft liver by characterizing the optical property of the tissue was introduced. A wide range of lipid content in the rat liver was obtained by using different feeding regimens, with lipotropic chow (choline/methionine deficient or low chow). The liver was removed...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199609150-00018
更新日期:1996-09-15 00:00:00
abstract:BACKGROUND:Cardiac allograft vasculopathy (CAV) has an incidence of 43% at 8 years after heart transplantation with extremely limited treatment options and unclear pathogenesis. CAV constitutes a significant complication that limits the long-term survival of heart recipients. Insulin-like growth factor-1 (IGF-1) is ass...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0b013e31823ec10d
更新日期:2012-02-15 00:00:00
abstract::Hepatic tolerance to hypotension was assessed by changes in arterial ketone body ratio (KBR) and hepatic energy charge levels in experimental brain death induced by epidural ballooning in dogs, and compared with the hemorrhagic shock model. Systolic arterial blood pressure was significantly decreased from 182 mmHg to ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198903000-00008
更新日期:1989-03-01 00:00:00
abstract::Renal function was observed retrospectively in a population of 228 adults who underwent a cardiac allograft at the University of Pittsburgh from June 1980 through June 1987, survived a minimum of one year, and received cyclosporine. Renal function was determined by serial measurement of serum creatinine concentration....
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199010000-00012
更新日期:1990-10-01 00:00:00
abstract:BACKGROUND:Treatment of fetal pancreas (FP) isografts with insulin-like growth factor-I greatly improves the rate of conversion to euglycemia in diabetic rats. Complete knowledge of other factors that may facilitate the engraftment and function of FP in vivo is still embryonic. Augmenter of liver regeneration (ALR) is ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199801150-00007
更新日期:1998-01-15 00:00:00
abstract::The effect of long-term pharmacologic immunosuppression (PI) on anti-Galalpha1-3Gal (alphaGal) antibody (Ab) levels has not been determined previously in humans. In this study, we measured alpha Gal Ab levels by ELISA in 14 healthy volunteers (controls) and in 70 patients with grafts (kidney, heart, liver) who had rec...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-200003150-00042
更新日期:2000-03-15 00:00:00
abstract::The cytotoxicity of tumour-bearer serum against a transplanted aminoazodye-induced rat hepatoma was revealed using normal rat serum as the source of complement as assessed using a short-term 51Cr release test. The tumour-bearing rat was not deficient in a functional complement system and direct cytolysis against hepat...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-197908000-00014
更新日期:1979-08-01 00:00:00
abstract::Three groups of patients were reviewed. Primary carcinomas were found in donors kidneys of 47 recipients. In 30 instances a tumor was present at harvesting. When a neoplasm was removed immediately pretransplantation or early posttransplantation there were no recurrences in 14 recipients. In another two instances, a tu...
journal_title:Transplantation
pub_type: 杂志文章
doi:
更新日期:1995-02-27 00:00:00
abstract:BACKGROUND:To better understand how different histologic patterns of allograft inflammation found on biopsies of human cardiac allografts progress to high-grade rejection, we undertook a statistical analysis of our institutional database to detect statistical patterns among different types of myocardial allograft infla...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-200206270-00014
更新日期:2002-06-27 00:00:00
abstract:BACKGROUND:Guillain-Barre Syndrome (GBS) is believed to be caused by autoimmune mechanisms that are predominantly T-cell mediated. We report GBS in organ transplant patients and bone marrow transplant patients, both of whom have iatrogenically suppressed T-cell function. METHODS:We reviewed the Duke University Medical...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-200104270-00026
更新日期:2001-04-27 00:00:00