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2015 ; 8
(10
): 12646-56
Nephropedia Template TP
gab.com Text
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Association of miRNA-145 expression in vascular smooth muscle cells with vascular
damages in patients with lupus nephritis
#MMPMID26722454
Ding Y
; Liao W
; Yi Z
; Xiang W
; He X
Int J Clin Exp Pathol
2015[]; 8
(10
): 12646-56
PMID26722454
show ga
miRNAs have been found to contribute to the regulation of multiple cellular
processes, including cell apoptosis, differentiation and proliferation. The
patients with lupus nephritis (LN) exhibit thickened renal vascular membrane and
highly proliferative vascular smooth muscle cells (VSMCs). Of various miRNAs
discovered, miR-145 is essential to mediate the proliferation of VSMCs and the
formation of atherosclerotic plaques. In this study, we studied the pathological
and vascular damage of renal LN, and the correlation between miR-145 expression
in VSMCs and the vascular damages. Serum, urine, and renal biopsies were obtained
from 41 patients with active LN. The serum and urinary VEGF levels were examined
to confirm the renal damage of each patient. Biopsies were stained to observe the
glomerular segmental lesions, sclerosis, and to evaluate the vascular damages.
The expression of miR-145 was also examined to determine the correlation between
its expression and the vascular damages. The expression of miR-145 was mainly
detected in the renal VSMCs and the epithelial cells of glomerular proximal
convoluted tubule. Nevertheless, the expression of miR-145 reduced as the tunicae
media vasorum ratios increased, indicating the development of LN inhibits the
expression of miR-145. Furthermore, our studies revealed no significant
correlation among renal interstitial vascular damage, glomerular damage and
severity classification of LN. Therefore, we suggest the damage of renal
interstitial vascular should be considered as one of the factors to evaluate the
severity of the LN.