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2017 ; 7
(1
): 2915
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Protective effect of rosiglitazone on kidney function in high-fat challenged
human-CRP transgenic mice: a possible role for adiponectin and miR-21?
#MMPMID28588299
Morrison MC
; Yakala GK
; Liang W
; Wielinga PY
; Salic K
; van Koppen A
; Tomar T
; Kleemann R
; Heeringa P
; Kooistra T
Sci Rep
2017[Jun]; 7
(1
): 2915
PMID28588299
show ga
Obesity-related albuminuria is associated with decline of kidney function and is
considered a first sign of diabetic nephropathy. Suggested factors linking
obesity to kidney dysfunction include low-grade inflammation, insulin resistance
and adipokine dysregulation. Here, we investigated the effects of two
pharmacological compounds with established anti-inflammatory properties,
rosiglitazone and rosuvastatin, on kidney dysfunction during high-fat diet
(HFD)-induced obesity. For this, human CRP transgenic mice were fed standard
chow, a lard-based HFD, HFD+rosuvastatin or HFD+rosiglitazone for 42 weeks to
study effects on insulin resistance; plasma inflammatory markers and adipokines;
and renal pathology. Rosiglitazone but not rosuvastatin prevented HFD-induced
albuminuria and renal fibrosis and inflammation. Also, rosiglitazone prevented
HFD-induced KIM-1 expression, while levels were doubled with rosuvastatin. This
was mirrored by miR-21 expression, which plays a role in fibrosis and is
associated with renal dysfunction. Plasma insulin did not correlate with
albuminuria. Only rosiglitazone increased circulating adiponectin concentrations.
In all, HFD-induced albuminuria, and renal inflammation, injury and fibrosis is
prevented by rosiglitazone but not by rosuvastatin. These beneficial effects of
rosiglitazone are linked to lowered miR-21 expression but not connected with the
selectively enhanced plasma adiponectin levels observed in rosiglitazone-treated
animals.