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J Ethnopharmacol. 2009 Feb 25;122(1):131-5. doi: 10.1016/j.jep.2008.12.015. Epub 2008 Dec 25.

Rehmannia glutinosa ameliorates the progressive renal failure induced by 5/6 nephrectomy.

Author information

1
Department of Internal Medicine, College of Oriental Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-Ku, Seoul 130-702, Republic of Korea.

Abstract

AIM OF THE STUDY:

Rehmannia glutinosa, the steamed root of the Scrophulariaceae family, has been widely used in Asian countries for the treatment of renal diseases. In this study, we evaluated the renoprotective effect of aqueous extract of Rehmannia glutinosa in progressive renal failure.

MATERIALS AND METHODS:

The effects of Rehmannia glutinosa on renal function, 24-h proteinuria, and the expression of angiotensin II, angiotensin II type 1 (AT(1)) receptor, TGF-beta1, and type IV collagen in renal cortex were analyzed in progressive renal failure rats induced by 5/6 nephrectomy.

RESULTS:

Rehmannia glutinosa reduced the serum creatinine level, 24-h urinary protein excretion, and glomerulosclerosis, and it also inhibited the expression of angiotensin II, AT(1) receptor, TGF-beta1 and type IV collagen in the renal cortex.

CONCLUSIONS:

These results suggest that the renoprotective effect of Rehmannia glutinosa might be mediated by suppressing the expression of angiotensin II and AT(1) receptor and by regulating TGF-beta1 and type IV collagen expression.

PMID:
19146934
DOI:
10.1016/j.jep.2008.12.015
[Indexed for MEDLINE]

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