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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 Physiol+Rep
2016 ; 4
(6
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Role of calcineurin (CN) in kidney glomerular podocyte: CN inhibitor ameliorated
proteinuria by inhibiting the redistribution of CN at the slit diaphragm
#MMPMID27009276
Wakamatsu A
; Fukusumi Y
; Hasegawa E
; Tomita M
; Watanabe T
; Narita I
; Kawachi H
Physiol Rep
2016[Mar]; 4
(6
): ä PMID27009276
show ga
Although calcineurin (CN) is distributed in many cell types and functions in
regulating cell functions, the precise roles ofCNremained in each type of the
cells are not well understood yet. ACNinhibitor (CNI) has been used for
steroid-resistant nephrotic syndrome. ACNIis assumed to ameliorate proteinuria by
preventing the overproduction of T-cell cytokines. However, recent reports
suggest thatCNIhas a direct effect on podocyte. It is accepted that a slit
diaphragm (SD), a unique cell-cell junction of podocytes, is a critical barrier
preventing a leak of plasma protein into urine. Therefore, we hypothesized
thatCNIhas an effect on theSD In this study, we analyzed the expression ofCNin
physiological and in the nephrotic model caused by the antibody against nephrin,
a critical component of theSD We observed thatCNis expressed at theSDin normal
rat and human kidney sections and has an interaction with nephrin. The staining
ofCNat theSDwas reduced in the nephrotic model, whileCNactivity in glomeruli was
increased. We also observed that the treatment with tacrolimus, aCNI, in this
nephrotic model suppressed the redistribution ofCN, nephrin, and
otherSDcomponents and ameliorated proteinuria. These observations suggested that
the redistribution and the activation ofCNmay participate in the development of
theSDinjury.