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2018 ; 8
(1
): 10276
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Modified scanning electron microscopy reveals pathological crosstalk between
endothelial cells and podocytes in a murine model of membranoproliferative
glomerulonephritis
#MMPMID29980767
Masum MA
; Ichii O
; Elewa YHA
; Nakamura T
; Otani Y
; Hosotani M
; Kon Y
Sci Rep
2018[Jul]; 8
(1
): 10276
PMID29980767
show ga
This study evaluated endothelial cells and podocytes, both being primary
components of the glomerular filtration barrier, in the progression of
membranoproliferative glomerulonephritis (MPGN) using modified scanning electron
microscopy (mSEM) analysis. BXSB/MpJ-Yaa model mice exhibited autoimmune-mediated
MPGN characterised by elevated serum autoantibody levels, albuminuria, renal
dysfunctional parameters, and decreased glomerular endothelial fenestrations (EF)
and podocyte foot process (PFP) effacement with immune cell infiltration. Similar
to transmission electron microscopy, mSEM revealed a series of pathological
changes in basement membrane and densities of EF and PFP in BXSB/MpJ-Yaa compared
with control BXSB/MpJ at different stages. Further, immunopositive area of
endothelial marker (CD34), podocyte functional molecules (Nephrin, Podocin,
Synaptopodin, and Wilms' tumour 1 (WT1)), and vascular endothelial growth factor
A (VEGF A) significantly decreased in the glomerulus of BXSB/MpJ-Yaa compared
with BXSB at final stage. The indices of glomerular endothelial injuries (EF
density and immunopositive area of CD34 and VEGF A) and podocyte injuries (PEP
density and immunopositive area of podocyte functional molecules) were also
significantly correlated with each other and with indices of autoimmune disease
and renal dysfunction. Thus, our results elucidated the pathological crosstalk
between endothelial cells and podocytes in MPGN progression and the usefulness of
mSEM for glomerular pathological analysis.