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2015 ; 5
(ä): 14472
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Metabolomics insights into chronic kidney disease and modulatory effect of
rhubarb against tubulointerstitial fibrosis
#MMPMID26412413
Zhang ZH
; Wei F
; Vaziri ND
; Cheng XL
; Bai X
; Lin RC
; Zhao YY
Sci Rep
2015[Sep]; 5
(ä): 14472
PMID26412413
show ga
Chronic kidney disease (CKD) is a major public health problem worldwide. Rhubarb
has been shown to have nephroprotective and anti-fibrotic activities in patients
with CKD. However, bioactive fractions and biochemical mechanism of anti-fibrotic
properties of rhubarb remain unclear. Here we applied ultra-performance liquid
chromatography-quadrupole time-of-flight mass spectrometry together with
univariate and multivariate statistical analyses to investigate the urinary
metabolite profile in rats with adenine-induced CKD treated with the petroleum
ether (PE)-, ethyl acetate (EA)- and n-butanol (BU)- extracts of rhubarb.
Significant differences in renal function, kidney histopathology as well as
metabolic profiles were observed between CKD and control rats. Changes in these
parameters reflected characteristic phenotypes of CKD rats. We further identified
a series of differential urinary metabolites for CKD rats, suggesting metabolic
dysfunction in pathway of amino acid, purine, taurine, and choline metabolisms.
Treatment with EA, BU and PE extracts of rhubarb improved renal function and
histopathological abnormalities including interstitial fibrosis and inflammation,
and either fully or partially reversed the abnormalities of the urinary
metabolites. Among them, the nephroprotective effect of EA extract was stronger
than BU and PE extracts. This work provides important mechanistic insights into
the CKD and nephroprotective effects of different rhubarb extract against
tubulo-interstitial fibrosis.