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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 Hum+Mutat
2017 ; 38
(4
): 365-372
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English Wikipedia
Deficiency of the sphingosine-1-phosphate lyase SGPL1 is associated with
congenital nephrotic syndrome and congenital adrenal calcifications
#MMPMID28181337
Janecke AR
; Xu R
; Steichen-Gersdorf E
; Waldegger S
; Entenmann A
; Giner T
; Krainer I
; Huber LA
; Hess MW
; Frishberg Y
; Barash H
; Tzur S
; Schreyer-Shafir N
; Sukenik-Halevy R
; Zehavi T
; Raas-Rothschild A
; Mao C
; Müller T
Hum Mutat
2017[Apr]; 38
(4
): 365-372
PMID28181337
show ga
We identified two unrelated consanguineous families with three children affected
by the rare association of congenital nephrotic syndrome (CNS) diagnosed in the
first days of life, of hypogonadism, and of prenatally detected adrenal
calcifications, associated with congenital adrenal insufficiency in one case.
Using exome sequencing and targeted Sanger sequencing, two homozygous truncating
mutations, c.1513C>T (p.Arg505*) and c.934delC (p.Leu312Phefs*30), were
identified in SGPL1-encoding sphingosine-1-phosphate (S1P) lyase 1. SGPL1
catalyzes the irreversible degradation of endogenous and dietary S1P, the final
step of sphingolipid catabolism, and of other phosphorylated long-chain bases.
S1P is an intracellular and extracellular signaling molecule involved in
angiogenesis, vascular maturation, and immunity. The levels of SGPL1 substrates,
S1P, and sphingosine were markedly increased in the patients' blood and
fibroblasts, as determined by liquid chromatography-tandem mass spectrometry.
Vascular alterations were present in a patient's renal biopsy, in line with
changes seen in Sgpl1 knockout mice that are compatible with a developmental
defect in vascular maturation. In conclusion, loss of SGPL1 function is
associated with CNS, adrenal calcifications, and hypogonadism.