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2015 ; 6
(ä): 247
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The protective effects of oral low-dose quercetin on diabetic nephropathy in
hypercholesterolemic mice
#MMPMID26388784
Gomes IB
; Porto ML
; Santos MC
; Campagnaro BP
; Gava AL
; Meyrelles SS
; Pereira TM
; Vasquez EC
Front Physiol
2015[]; 6
(ä): 247
PMID26388784
show ga
AIMS: Diabetic nephropathy (DN) is one of the most important causes of chronic
renal disease, and the incidence of DN is increasing worldwide. Considering our
previous report (Gomes et al., 2014) indicating that chronic treatment with oral
low-dose quercetin (10 mg/Kg) demonstrated anti-oxidative, anti-apoptotic and
renoprotective effects in the C57BL/6J model of DN, we investigated whether this
flavonoid could also have beneficial effects in concurrent DN and spontaneous
atherosclerosis using the apolipoprotein E-deficient mouse (apoE(-/-)). METHODS:
Streptozotocin was used to induce diabetes (100 mg/kg/day, 3 days) in male
apoE(-/-) mice (8 week-old). After 6 weeks, the mice were randomly separated into
DQ: diabetic apoE(-/-) mice treated with quercetin (10 mg/kg/day, 4 weeks, n =
8), DV: diabetic ApoE(-/-) mice treated with vehicle (n = 8) and ND: non-treated
non-diabetic mice (n = 8). RESULTS: Quercetin treatment diminished polyuria
(~30%; p < 0.05), glycemia (~25%, p < 0.05), normalized the hypertriglyceridemia.
Moreover, this bioflavonoid diminished creatininemia (~30%, p < 0.01) and reduced
proteinuria but not to normal levels. We also observed protective effects on the
renal structural changes, including normalization of the index of
glomerulosclerosis and kidney weight/body weight. CONCLUSIONS: Our data revealed
that quercetin treatment significantly reduced DN in hypercholesterolemic mice by
inducing biochemical changes (decrease in glucose and triglycerides serum levels)
and reduction of glomerulosclerosis. Thus, this study highlights the relevance of
quercetin as an alternative therapeutic option for DN, including in diabetes
associated with dyslipidemia.