Renal protective effects of astragalus root in rat models of chronic kidney disease

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Abstract

Background: Astragalus root is a commonly used herb in traditional Chinese medicine. Although renoprotective effects have been reported in some clinical and experimental studies, the details remain unknown. Methods: We used 5/6 nephrectomized rats as chronic kidney disease (CKD) models. At 10 weeks, they were divided into four groups, namely, CKD, low-dose astragalus (AR400), high-dose astragalus (AR800), and sham groups. At 14 weeks, they were sacrificed for the evaluation of blood, urine, mRNA expression in the kidney, and renal histopathology. Results: Kidney dysfunction was significantly improved following astragalus administration (creatinine clearance: sham group; 3.8 ± 0.3 mL/min, CKD group; 1.5 ± 0.1 mL/min, AR400 group; 2.5 ± 0.3 mL/min, AR800 group; 2.7 ± 0.1 mL/min). Blood pressure, urinary albumin, and urinary NGAL levels were significantly lower in the astragalus-treated groups than those in the CKD group. Excretion of urinary 8-OHdG, an oxidative stress marker, and intrarenal oxidative stress were lower in the astragalus-treated groups than those in the CKD group. Furthermore, the mRNA expression of NADPH p22 phox, NADPH p47 phox, Nox4, renin, angiotensin II type 1 receptor, and angiotensinogen in the kidney was lower in the astragalus-treated groups compared with the CKD group. Conclusion: This study suggests that astragalus root slowed CKD progression, possibly through the suppression of oxidative stress and the renin–angiotensin system.

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APA

Goto, S., Fujii, H., Watanabe, K., Shimizu, M., Okamoto, H., Sakamoto, K., … Nishi, S. (2023). Renal protective effects of astragalus root in rat models of chronic kidney disease. Clinical and Experimental Nephrology, 27(7), 593–602. https://doi.org/10.1007/s10157-023-02356-8

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