Abstract:
:Tacrolimus (FK) and cyclosporine (Cs) are potent immunosuppressants that effectively prevent the rejection of transplanted organs including liver and small intestine. Our study examined the effects of these immunosuppressants on Peyer's patches, which play an important role in mucosal immune response through uptake and transport of enteric microorganisms and macromolecules in the gut-associated lymphoid tissues. After administration of FK and Cs, we assessed changes in lymphoid follicle structure and quantified the uptake and transport of particles in the follicle associated epithelium (FAE) including M cells, using fluorescent latex microspheres in rabbit Peyer's patches. Rabbits, five in each group, received oral administration of FK (3.2 mg/kg), Cs (10 mg/kg), or phosphate-buffered saline daily for 7 days. After 2 days of withdrawal, rabbits were anesthetized, and received injections with 2 ml of the suspension of 0.5-microm fluorescent microspheres (1010/ml) into ligated intestinal segments containing Peyer's patches. After 2 hr of gentle agitation, segments were removed, rinsed, fixed with periodate-lysine-2% paraformaldehyde, frozen, and sections were stained with fluorescent phalloidin to label brush border actin filaments. The size of the lymphoid follicles in each group was measured under a light microscope. The number of microspheres in follicles was assessed in graphically defined areas of follicles from each group. In addition, immunohistochemical analysis of CD43 and MHC-II positive cells in FAE of lymphoid follicles of each group was performed. FK and Cs significantly reduced the height of lymphoid domes and the height and width of follicles, as compared to those of controls. In both FK and Cs groups, the numbers of microspheres that adhered, were taken up and were transported into lymphoid follicles were smaller than in controls, indicating that their movement rates into deep layers were markedly reduced. Furthermore, FK and Cs reduced the mean numbers of CD43 and MHC-II positive cells in FAE per unit area (mm2) as compared with controls. These findings suggest that FK and Cs may produce immunosuppressive effects, at least in part, through reduction of the uptake and transport of particles into Peyer's patches, and by reduction of the number of immunoreactive cells in FAE of Peyer's patches.
journal_name
Transplantationjournal_title
Transplantationauthors
Fujimura Y,Owen RLdoi
10.1097/00007890-200204150-00006subject
Has Abstractpub_date
2002-04-15 00:00:00pages
1049-54issue
7eissn
0041-1337issn
1534-6080journal_volume
73pub_type
杂志文章相关文献
TRANSPLANTATION文献大全abstract::Nuclear imaging is used to evaluate renal allografts demonstrating delayed function after transplantation. Interpretation of the nuclear scan in the context of clinical data, provides helpful information in the management of the transplant recipient. The better quality of images obtained with technetium-99m mercaptoac...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199711270-00023
更新日期:1997-11-27 00:00:00
abstract::The major role of anti-alphaGal antibodies in the hyperacute rejection of pig organs by humans and baboons has been clearly demonstrated. Spacered alpha-galactose disaccharide (Gal(alpha1)-3Gal) hapten was produced by chemical synthesis and covalently attached to a flexible, hydrophilic polymer (PAA), which in turn wa...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199611270-00001
更新日期:1996-11-27 00:00:00
abstract:BACKGROUND:Living kidney donors have donation-related out-of-pocket costs (direct costs) and/or ongoing daily expenses while losing income (indirect costs). Yet there is little information about how much of a subjective burden these constitute for the donors. METHODS:From December 2003 through December 2014, we survey...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0000000000001568
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:The organ donor shortage has led to a reconsideration of the use of non-heart-beating donors (NHBDs). However, graft injury due to warm ischemia in NHBD livers strongly affects posttransplant outcome. The present study was aimed at investigating the role of the cellular cyclic (c)AMP second messenger signal ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199810270-00004
更新日期:1998-10-27 00:00:00
abstract:BACKGROUND:Community respiratory viruses such as respiratory syncytial virus (RSV), adenovirus, influenza A, influenza B, and the parainfluenza group are frequent causes of respiratory disease in bone marrow transplant (BMT) patients. MATERIAL AND METHODS:During the period from March 1993 to August 1999, 810 samples o...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/01.TP.0000072012.26176.58
更新日期:2003-07-15 00:00:00
abstract::We have tested the predictive model for risk of sensitization by donor-specific transfusions developed at the University of California, San Francisco for its applicability to the DST experience at UW/Madison. Patient sample sizes between the two groups were similar (n = 249 for UW/Madison, n = 261 for UCSF) and the tw...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198901000-00031
更新日期:1989-01-01 00:00:00
abstract::Renal allograft recipients treated with cyclosporine (CsA) have increased renal vascular resistance that falls when CsA is stopped. With the aim of identifying whether CsA-treated patients with excellent renal function also have an alteration in renal vascular tone and to investigate which vessels are affected, we hav...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198807000-00014
更新日期:1988-07-01 00:00:00
abstract:BACKGROUND:Malnutrition is common in patients with end-stage liver disease considered for transplantation, but it is unclear whether this affects the outcome after transplantation. AIM.: To determine whether the severity of malnutrition in liver transplant candidates affects outcome after transplantation. METHODS:We d...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/01.tp.0000150022.64564.c2
更新日期:2005-02-15 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
abstract:BACKGROUND:Subclinical T cell-mediated rejection (subTCMR) is commonly found after liver transplantation and has a good short-term prognosis, even when it is left untreated. Donor-specific antibodies (DSA) are putatively associated with a worse prognosis for recipient and graft after liver transplantation. METHODS:To ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0000000000003034
更新日期:2020-03-01 00:00:00
abstract::Flow cytometry (FC) is increasingly being used as a crossmatch procedure in addition to the standard complement-dependent cytotoxicity (CDC) test. In fact, FC offers a number of advantages over CDC and has the potential to become the primary crossmatch technique for cadaveric donor renal transplantation. We evaluated ...
journal_title:Transplantation
pub_type: 临床试验,杂志文章
doi:
更新日期:1994-02-27 00:00:00
abstract:BACKGROUND:Both number and origin (donor vs. host) of dendritic cells (DC) are associated with acute graft-versus-host disease (aGvHD), relapse and graft failure after human allogeneic hematopoietic cell transplantation (aHCT). METHODS:We prospectively and simultaneously investigated skin and blood DC subtypes, their ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/01.tp.0000203318.16224.57
更新日期:2006-03-27 00:00:00
abstract::The value of percutaneous core needle biopsy in the immunohistological evaluation of renal allograft dysfunction was studied in 72 consecutive biopsies performed in 42 patients. The phenotypes of infiltrating cells mediating graft destruction were identified with monoclonal antibodies and immunoperoxidase staining tec...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198701000-00022
更新日期:1987-01-01 00:00:00
abstract::Created by the US National Organ Transplant Act in 1984, the Scientific Registry of Transplant Recipients (SRTR) is obligated to publicly report data on transplant program and organ procurement organization performance in the United States. These reports include risk-adjusted assessments of graft and patient survival,...
journal_title:Transplantation
pub_type: 杂志文章,评审
doi:10.1097/TP.0000000000000891
更新日期:2016-02-01 00:00:00
abstract:BACKGROUND:This study evaluated the prognostic impact of pretransplant donor-specific anti-human leukocyte antigen antibodies (DSA) detected by single-antigen beads and compared the three generations of crossmatch (XM) tests in kidney transplantation. METHODS:Thirty-seven T-cell complement-dependent cytotoxicity cross...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/tp.0b013e3181e36e08
更新日期:2010-07-27 00:00:00
abstract:BACKGROUND:The role of asymptomatic bacteriuria in kidney transplant recipients is unknown. There is no clear evidence of its effect on transplanted kidney. METHODS:We studied urine cytokines profile among kidney transplant recipients with bacteriuria found in screening examination. Urine cultures were collected in 26...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/01.tp.0000226072.20185.f8
更新日期:2006-06-27 00:00:00
abstract:BACKGROUND:It has been postulated that chimerism after transplantation might promote graft acceptance. In the present study, we prospectively assessed blood chimerism in 10 lung transplant recipients during the first posttransplant year and investigated whether chimerism was associated with an immunologically stable si...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199707150-00030
更新日期:1997-07-15 00:00:00
abstract::After the progressive improvement in the results of organ transplantation we now face the challenge of shortage in organ supply. The decreasing number of organ retrievals performed in 1990 at our hospital has raised questions concerning loss of potential organ donors and opposition to donation by the next of kin. We i...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199207000-00015
更新日期:1992-07-01 00:00:00
abstract:BACKGROUND:In France, the need for continuous monitoring of transplant center performance has recently become apparent. Cumulative sum (CUSUM) monitoring of transplantation is already been used to monitor transplant outcomes in the United Kingdom and in the United States. Because CUSUM monitoring can be applied by diff...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0000000000002591
更新日期:2019-09-01 00:00:00
abstract::It was the objective of these experiments to study the time-related changes in the responsiveness of the cellular elements of the immune system following contact with single non-H-2 or multiple H-2 histocompatibility antigens. The reactivity of spleen cells from mice that received injections of spleen cells bearing H-...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-198802000-00047
更新日期:1988-02-01 00:00:00
abstract::Predictors of survival after lung transplant were analyzed in a large cohort of 990 lung transplanted patients from a single center. The overall survival was 41.6%, (41.5% in males, and 41.8% in females), the average length of the follow up was 45.84+/-51.98 months (range 0-282.47 months). Females tend to live longer ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0b013e31816c2fae
更新日期:2008-04-27 00:00:00
abstract::The frequencies of circulating donor-reactive cytotoxic lymphocyte precursors (CLP) and Il-2-producing helper lymphocyte precursors (HLP) were determined by limiting dilution analysis in 19 kidney allograft recipients before and at various intervals (up to 2 years) after transplantation. A significant, selective, and ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199309000-00025
更新日期:1993-09-01 00:00:00
abstract::The effect of cyclosporine on lymphocyte intracellular free calcium [( Ca2+]i) is controversial, and potential age-related differences in lymphocyte CsA sensitivity have not been studied. We measured the mitogen-induced change in [Ca2+]i in peripheral blood lymphocytes (PBLs) following intravenous CsA infusion (5 mg/k...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199108000-00031
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:The long-term metabolic function of microencapsulated xenogeneic adult porcine islets (API) was assessed in a murine model of type 1 diabetes mellitus. METHODS:API were encapsulated in barium-gelled alginate and transplanted intraperitoneally in diabetic nonobese diabetic (NOD) mice given no immunosuppressi...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0b013e3181abbfc1
更新日期:2009-07-27 00:00:00
abstract::The histopathological features of chronic rejection and its initiation were assessed using rat heterotopic heart transplantation and retransplantation models. Fully allogeneic or minor, non-MHC antigen-mismatch heart grafts transplanted into recipient rats treated with a short course of FK506 showed long-term survival...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199511270-00002
更新日期:1995-11-27 00:00:00
abstract:BACKGROUND:Chronic graft-versus-host disease (cGVHD) represents a double-edged sword. In its nonsevere form, cGVHD associates with better control of the malignant disease, thus highlighting graft-versus-leukemia effects. However, severe cGVHD leads to debilitating morbidity and increased nonrelapse mortality. The predi...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/TP.0000000000003108
更新日期:2020-11-01 00:00:00
abstract:BACKGROUND:In a recent trial, targeted mild hypothermia in brain-dead organ donors significantly reduced the incidence of delayed graft function after kidney transplantation. This trial was stopped early for efficacy. Here, we report long-term graft survival for all organs along with donor critical care end points. ME...
journal_title:Transplantation
pub_type: 杂志文章,随机对照试验
doi:10.1097/TP.0000000000002890
更新日期:2019-11-01 00:00:00
abstract::In organ transplantation, blood borne cells and macromolecules (e.g., antibodies) of the host immune system are brought into direct contact with the endothelial cell lining of graft vessels. In this location, graft endothelial cells play several roles in allograft rejection, including the initiation of rejection respo...
journal_title:Transplantation
pub_type: 杂志文章,评审
doi:10.1097/TP.0b013e3181891d8b
更新日期:2008-11-27 00:00:00
abstract:BACKGROUND:Cytomegalovirus (CMV) replication has been associated with more risk for solid organ graft rejection. We wondered whether this association still holds when patients at risk receive prophylactic treatment for CMV. METHODS:We correlated CMV infection, biopsy-proven graft rejection, and graft loss in 1,414 pat...
journal_title:Transplantation
pub_type: 杂志文章,多中心研究
doi:10.1097/TP.0000000000000160
更新日期:2014-11-15 00:00:00
abstract::The effect of FK506 and cyclosporine on NK and ADCC activity was evaluated. Cytotoxic cells mediating both activities are resistant to FK506. In contrast, preincubation of ADCC and NK effectors with cyclosporine decreases their cytotoxic potential, while adding the drug to the assays is without effect. ...
journal_title:Transplantation
pub_type: 杂志文章
doi:10.1097/00007890-199101000-00045
更新日期:1991-01-01 00:00:00