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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Transplant
2015 ; 15
(3
): 815-22
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Neutralizing BAFF/APRIL with atacicept prevents early DSA formation and AMR
development in T cell depletion induced nonhuman primate AMR model
#MMPMID25675879
Kwun J
; Page E
; Hong JJ
; Gibby A
; Yoon J
; Farris AB
; Villinger F
; Knechtle S
Am J Transplant
2015[Mar]; 15
(3
): 815-22
PMID25675879
show ga
Depletional strategies directed toward achieving tolerance induction in organ
transplantation have been associated with an increased incidence and risk of
antibody-mediated rejection (AMR) and graft injury. Our clinical data suggest
correlation of increased serum B cell activating factor/survival factor (BAFF)
with increased risk of antibody-mediated rejection in alemtuzumab treated
patients. In the present study, we tested the ability of BAFF blockade (TACI-Ig)
in a nonhuman primate AMR model to prevent alloantibody production and prolong
allograft survival. Three animals received the AMR inducing regimen
(CD3-IT/alefacept/tacrolimus) with TACI-Ig (atacicept), compared to five control
animals treated with the AMR inducing regimen only. TACI-Ig treatment lead to
decreased levels of DSA in treated animals at 2 and 4 weeks posttransplantation
(p?0.05). In addition, peripheral B cell numbers were significantly lower at 6
weeks posttransplantation. However, it provided only a marginal increase in graft
survival (59?±?22 vs. 102?±?47 days; p?=?0.11). Histological analysis revealed a
substantial reduction in findings typically associated with humoral rejection
with atacicept treatment. More T cell rejection findings were observed with
increased graft T cell infiltration in atacicept treatment, likely secondary to
the graft prolongation. We show that BAFF/APRIL blockade using concomitant
TACI-Ig treatment reduced the humoral portion of rejection in our
depletion-induced preclinical AMR model.
|*Kidney Transplantation
[MESH]
|*Lymphocyte Depletion
[MESH]
|*Models, Animal
[MESH]
|Animals
[MESH]
|Antibodies, Neutralizing/*immunology
[MESH]
|Antibody Formation
[MESH]
|B-Cell Activating Factor/*immunology
[MESH]
|Graft Survival
[MESH]
|Humans
[MESH]
|Macaca mulatta
[MESH]
|Male
[MESH]
|Recombinant Fusion Proteins/*therapeutic use
[MESH]