scholarly journals Long-Term Allogeneic Islet Graft Survival in Prevascularized Subcutaneous Sites Without Immunosuppressive Treatment

2014 ◽  
Vol 14 (7) ◽  
pp. 1533-1542 ◽  
Author(s):  
N. M. Luan ◽  
H. Iwata
2014 ◽  
Vol 98 ◽  
pp. 356
Author(s):  
Z. Wang ◽  
J. Li ◽  
X. Chen ◽  
C. Zhang ◽  
Z. Yin ◽  
...  
Keyword(s):  

2005 ◽  
Vol 14 (2-3) ◽  
pp. 85-96 ◽  
Author(s):  
Antonello Pileggi ◽  
R. Damaris Molano ◽  
Thierry Berney ◽  
Hirohito Ichii ◽  
Sergio San Jose ◽  
...  

Transplantation of islets of Langerhans in patients with type 1 diabetes allows for improved metabolic control and insulin independence. The need for chronic immunosuppression limits this procedure to selected patients with brittle diabetes. Definition of therapeutic strategies allowing permanent engraftment without the need for chronic immunosuppression could overcome such limitations. We tested the effect of the use of protoporphyrins (CoPP and FePP), powerful inducers of the cytoprotective protein hemeoxygenase 1 (HO-1), on allogeneic islet graft survival. Chemically induced diabetic C57BL/6 mice received DBA/2 islets. Treatment consisted in peritransplant administration of CoPP or saline. Islets were either cultured in the presence of FePP or vehicle before implant. Short-course administration of CoPP led to long-term islet allograft survival in a sizable proportion of recipients. Long-term graft-bearing animals rejected third-party islets while accepting a second set donor-specific graft permanently, without additional treatment. Preconditioning of islets with FePP by itself led to improved graft survival in untreated recipients, and provided additional advantage in CoPP-treated recipients, resulting in an increased proportion of long-term surviving grafts. Preconditioning of the graft with protoporphyrins prior to implant resulted in reduction of class II expression. Administration of protoporphyrins to the recipients of allogeneic islets also resulted in transient powerful immunosuppression with reduced lymphocyte proliferative responses, increased proportion of regulatory cells (CD4+CD25+), decreased mononuclear cell infiltrating the graft, paralleled by a systemic upregulation of HO-1 expression. All these mechanisms may have contributed to the induction of donor-specific hyporesponsiveness in a proportion of the protoporphyrintreated animals.


Diabetes ◽  
2004 ◽  
Vol 53 (9) ◽  
pp. 2338-2345 ◽  
Author(s):  
Q. Shi ◽  
D. Wang ◽  
G. A. Hadley ◽  
A. W. Bingaman ◽  
S. T. Bartlett ◽  
...  
Keyword(s):  
Nod Mice ◽  

2002 ◽  
Vol 73 (9) ◽  
pp. 1425-1430 ◽  
Author(s):  
Fumin Fu ◽  
Shiling Hu ◽  
Jeffrey Deleo ◽  
Shu Li ◽  
Christine Hopf ◽  
...  
Keyword(s):  

Diabetes ◽  
2007 ◽  
Vol 56 (5) ◽  
pp. 1289-1298 ◽  
Author(s):  
J. A. Emamaullee ◽  
L. Stanton ◽  
C. Schur ◽  
A.M. J. Shapiro

Lupus ◽  
2018 ◽  
Vol 27 (8) ◽  
pp. 1303-1311 ◽  
Author(s):  
J C Ramirez-Sandoval ◽  
H Chavez-Chavez ◽  
M Wagner ◽  
O Vega-Vega ◽  
L E Morales-Buenrostro ◽  
...  

Kidney transplant for patients with lupus nephritis (LN) has satisfactory outcomes in studies with short-term or mid-term follow up. Nevertheless, information about long-term outcomes is scarce. We performed a retrospective matched-pair cohort study in 74 LN recipients compared with 148 non-LN controls matched by age, sex, immunosuppressive treatment, human leukocyte antigen (HLA) matches, and transplant period in order to evaluate long-term outcomes of kidney transplant in LN recipients. Matched pairs were predominantly females (83%), median age at transplant surgery of 32 years (interquartile range 23–38 years), and 66% received a graft from a living related donor. Among LN recipients, 5-, 10-, 15-, and 20-year graft survival was 81%, 79%, 57% and 51%, respectively, and it was similar to that observed in controls (89%, 78%, 64%, and 56%, respectively). Graft loss (27% vs. 21%, p = 0.24) and overall survival ( p = 0.15) were not different between LN recipients and controls. Also, there was no difference in episodes of immunological rejection, thrombosis, or infection. Only six LN recipients had biopsy-proven lupus recurrence and three of them had graft loss. In a cohort with a long follow up of kidney transplant recipients, LN recipients had similar long-term graft survival and overall outcomes compared with non-lupus recipients when predictors are matched between groups.


2020 ◽  
Author(s):  
Jong‐Min Kim ◽  
So‐Hee Hong ◽  
Hyunwoo Chung ◽  
Jun‐Seop Shin ◽  
Byoung‐Hoon Min ◽  
...  

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