Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=26190648
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26190648
.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
(12
): 3055-66
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Repeated Injections of IL-2 Break Renal Allograft Tolerance Induced via Mixed
Hematopoietic Chimerism in Monkeys
#MMPMID26190648
Yamada Y
; Nadazdin O
; Boskovic S
; Lee S
; Zorn E
; Smith RN
; Colvin RB
; Madsen JC
; Cosimi AB
; Kawai T
; Benichou G
Am J Transplant
2015[Dec]; 15
(12
): 3055-66
PMID26190648
show ga
Tolerance of allografts achieved in mice via stable mixed hematopoietic chimerism
relies essentially on continuous elimination of developing alloreactive T cells
in the thymus (central deletion). Conversely, while only transient mixed
chimerism is observed in nonhuman primates and patients, it is sufficient to
ensure tolerance of kidney allografts. In this setting, it is likely that
tolerance depends on peripheral regulatory mechanisms rather than thymic
deletion. This implies that, in primates, upsetting the balance between
inflammatory and regulatory alloimmunity could abolish tolerance and trigger the
rejection of previously accepted renal allografts. In this study, six monkeys
that were treated with a mixed chimerism protocol and had accepted a kidney
allograft for periods of 1-10 years after withdrawal of immunosuppression
received subcutaneous injections of IL-2 cytokine (0.6-3 × 10(6) IU/m(2) ). This
resulted in rapid rejection of previously tolerated renal transplants and was
associated with an expansion and reactivation of alloreactive pro-inflammatory
memory T cells in the host's lymphoid organs and in the graft. This phenomenon
was prevented by anti-CD8 antibody treatment. Finally, this process was
reversible in that cessation of IL-2 administration aborted the rejection process
and restored normal kidney graft function.