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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 Am+J+Nephrol
2016 ; 44
(5
): 339-353
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Longitudinal Changes in Measured Glomerular Filtration Rate, Renal Fibrosis and
Biomarkers in a Rat Model of Type 2 Diabetic Nephropathy
#MMPMID27736813
Su Z
; Widomski D
; Ma J
; Namovic M
; Nikkel A
; Leys L
; Olson L
; Salte K
; Donnelly-Roberts D
; Esbenshade T
; McGaraughty S
Am J Nephrol
2016[]; 44
(5
): 339-353
PMID27736813
show ga
BACKGROUND: Obese ZSF-1 rats display many features of human type II diabetes
including nephropathy (DN). The study aimed to further understand the relevance
of this model to DN, for which glomerular filtration rate (GFR), renal fibrosis
and several urinary/tissue biomarkers was followed over 24 weeks in ZSF-1 rats.
METHODS: Intact/sham or uninephrectomized male and female ZSF-1 rats were
studied. GFR was measured by transdermal clearance of fluorescein
isothiocyanate-sinistrin. Urine was collected every 2-4 weeks for biomarker
analysis. Renal tissue was examined histologically for fibrosis and for levels of
inflammatory and fibrotic genes. RESULTS: Male obese ZSF-1 rats demonstrated
metabolic syndrome and proteinuria. Female counterparts were hyperlipidemic with
delayed proteinuria, but were not hyperglycemic. Kidney hyperfiltration was
observed in male obese rats in weeks 2-4 after surgery, and subsequently declined
to levels significantly lower than controls. Tubulointerstitial/glomerular
fibrosis in male obese rats was significantly elevated by week 12 post surgery
and continued to expand in the ensuing weeks, particularly in uninephrectomized
rats. Female rats had less severe fibrosis. Except for epidermal growth factor
which decreased, the levels of several key inflammatory, injury and fibrotic
factors were elevated in both tissue (mRNA) and urine (protein) of male obese
rats. CONCLUSION: Male obese ZSF-1 rats represent an important DN model,
manifesting key pathophysiological features including metabolic syndrome,
proteinuria, progressive tubular and glomerular fibrosis, and transient
hyperfiltration followed by progressive decline in renal function. Uninephrectomy
significantly accelerated disease progression. Females were less severe in
disease manifestation. Several urinary and tissue biomarkers were identified in
the male obese rats that tracked with disease progression.