Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 300.79999999999995 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\26565566
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Br+J+Pharmacol
2016 ; 173
(3
): 575-87
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
APT070 (mirococept), a membrane-localizing C3 convertase inhibitor, attenuates
early human islet allograft damage in vitro and in vivo in a humanized mouse
model
#MMPMID26565566
Xiao F
; Ma L
; Zhao M
; Smith RA
; Huang G
; Jones PM
; Persaud S
; Pingitore A
; Dorling A
; Lechler R
; Lombardi G
Br J Pharmacol
2016[Feb]; 173
(3
): 575-87
PMID26565566
show ga
BACKGROUND AND PURPOSE: A major obstacle to islet cell transplantation is the
early loss of transplanted islets resulting from the instant blood-mediated
inflammation reaction (IBMIR). The activation of complement pathways plays a
central role in IBMIR. The aim of this study was to test the inhibitory effect of
"painting" human islets with APT070, a membrane-localizing C3 convertase
inhibitor, on inflammation evoked by exposure to human serum in vitro and by
transplantation in vivo in a humanized diabetic mouse model. EXPERIMENTAL
APPROACH: In vitro, human islets pre-incubated with APT070 were exposed to
allogeneic whole blood. In vivo, similarly treated islets were transplanted
underneath the kidney capsule of streptozotocin-induced diabetic NOD-SCID
IL2r?(-/-) mice that had been reconstituted with human CD34(+) stem cells.
Complement activation and islet hormone content were assayed using enzyme-linked
immunosorbent assays. Supernatants and sera were assayed for cytokines using
cytometric beads array. Morphology of the islets incubated with human serum in
vitro and in graft-bearing kidney were evaluated using immunofluorescence
staining. KEY RESULTS: Pre-incubation with APT070 decreased C-peptide release and
iC3b production in vitro, with diminished deposition of C4d and C5b-9 in islets
embedded in blood clots. In vivo, the APT070-treated islets maintained intact
structure and showed less infiltration of inflammatory cells than untreated
islets. The pretreatments also significantly reduced pro-inflammatory cytokines
in supernatants and sera. CONCLUSIONS AND IMPLICATIONS: Pre-treatment of islets
with APT070 could reduce intra-islet inflammation with accompanying preservation
of insulin secretion by beta cells. APT070 could be as a potential therapeutic
tool in islet transplantation.