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The therapeutic impact of entresto on protecting against cardiorenal syndrome-associated renal damage in rats on high protein diet #MMPMID31108352
Yang CC; Chen YT; Chen CH; Li YC; Shao PL; Huang TH; Chen YL; Sun CK; Yip HK
Biomed Pharmacother 2019[Aug]; 116 (ä): 108954 PMID31108352show ga
BACKGROUND: This study tested the hypothesis that Entresto could safely and effectively preserve heart and kidney function in rats with cardiorenal syndrome (CRS) induced by 5/6 nephrectomy and intra-peritoneal doxorubicin administration (accumulated dosage up to 7.5 mg/kg) together with daily high-protein-diet (H(PD)). METHODS AND RESULTS: Adult male Sprague-Dawley rats (n = 24) were equally categorized into Group 1 (sham-operated control + H(PD)), Group 2 (CRS + H(PD)) and Group 3 [CRS + H(PD) + Entresto (100 mg/kg/day orally) since Day 14 after CRS induction] and euthanized by Day 63 after CRS induction. By Day 63, circulatory BUN and creatinine levels and ratios of urine protein to creatinine were significantly higher in Group 2 than those in Groups 1 and 3, and significantly higher in Group 3 than in Group 1, whereas left-ventricular ejection fraction and kidney weight showed an opposite pattern among all groups (all p < 0.001). Microscopically, fibrosis area and intensity of oxidative stress (i.e., DCFDA stain) in kidney/heart tissues exhibited a pattern identical to that of creatinine level among all groups (all p < 0.0001). Kidney injury score and protein expressions of autophagy (i.e., beclin-1/Atg-5/protein ratio of LC3-BII/LC3-BI), fibrosis (Smad3/TGF-ss), apoptosis (mitochondrial-Bax/capase2/3/9), oxidative-stress (NOX-4/oxidized protein/xanthine-oxidase/catalase), membranous p47phox phosphorylation and mitochondrial-damage biomarker (cytosolic-cytochrome-C) were higher in Group 2 than those in Groups 1 and 3, and significantly higher in Group 3 than in Group 1, while protein expressions of anti-apoptosis (Bcl-2/Bcl-XL) and mitochondrial integrity (mitochondrial-cytochrome-C) markers displayed an opposite pattern among all groups in kidney tissues (all p < 0.0001). CONCLUSION: Oral administration of entresto was safe and could offer protection against CRS-induced heart and kidney damage.