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2012 ; 30
(6
): 1275-80
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Possible role of transforming growth factor-?1 and vascular endothelial growth
factor in Fabry disease nephropathy
#MMPMID23007467
Lee MH
; Choi EN
; Jeon YJ
; Jung SC
Int J Mol Med
2012[Dec]; 30
(6
): 1275-80
PMID23007467
show ga
Fabry disease is a lysosomal storage disorder (LSD) caused by deficiency of
?-galactosidase A (?-gal A), resulting in deposition of globotriaosylceramide
(Gb3; also known as ceramide trihexoside) in the vascular endothelium of many
organs. A gradual accumulation of Gb3 leads to cardiovascular, cerebrovascular
and renal dysfunction. Endothelial cell dysfunction leads to renal complications,
one of the main symptoms of Fabry disease. However, the pathological mechanisms
by which endothelial dysfunction occurs in Fabry disease are poorly
characterized. The purpose of this study was to investigate whether the
expression of transforming growth factor-?1 (TGF-?1) and vascular endothelial
growth factor (VEGF) is associated with the renal pathogenesis of Fabry disease.
We found that the protein expression levels of renal thrombospondin-1 (TSP-1),
TGF-?1 and VEGF were higher in the kidneys from Fabry mice compared to wild-type
mice. The expression levels of VEGF receptor 2 (VEGFR2), fibroblast growth
factor-2 (FGF-2) and phospho-p38 (P-p38) were also higher in the kidneys from
Fabry mice compared with wild-type mice. Activities of cysteine aspartic acid
protease (caspase)-6 and caspase-9 were higher in kidneys from Fabry than from
the wild-type mice. These results suggest that overexpression of TGF-?1 and VEGF
in the Fabry mouse kidney might contribute to Fabry disease nephropathy by
inducing apoptosis. To test whether Gb3 accumulation can induce apoptosis, we
incubated bovine aortic endothelial cells with Gb3 and found increased expression
of TGF-?1, VEGFR2, VEGF, FGF-2 and P-p38. The combination of increased expression
of TGF-?1 and VEGF caused by Gb3 accumulation may allow upregulation of FGF-2,
VEGFR2 and P-p38 expression, and these changes may be associated with Fabry
disease nephropathy by inducing apoptosis.