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JOURNAL ARTICLE

The amelioration of streptozotocin diabetes-induced renal damage by Wu-Ling-San (Hoelen Five Herb Formula), a traditional Chinese prescription

I-Min Liu, Thing-Fong Tzeng, Shorong-Shii Liou, Chia Ju Chang
Journal of Ethnopharmacology 2009 July 15, 124 (2): 211-8
19397971

ETHNOPHARMACOLOGICAL RELEVANCE: Wu-Ling-San (Hoelen Five Herb Formula) is a Chinese prescription used to promote water metabolism.

AIM OF THE STUDY: The present study was undertaken to characterize the effects of Wu-Ling-San on diabetic nephropathy.

MATERIALS AND METHODS: Streptozotocin (STZ)-diabetic rats were orally administrated with Wu-Ling-San (0.5, 1.5, 2.5 g/(kgday)) once a day for 10 weeks. Changes in the renal function related parameters in plasma and urine were analyzed at the end of 10-week administration. Kidney was isolated for pathology histology, immunohistochemistry staining and Western blot analyses.

RESULTS: Wu-Ling-San (2.5 g/(kgday)) partially decreased the high plasma glucose level in diabetic rats. Diabetic-dependent alterations in urinary albumin, 24-h urinary albumin excretion rate, creatinine clearance, and glomerular mesangial matrix expansion were ameliorated by Wu-Ling-San. The increased expression of nuclear factor-kB as well as transforming growth factor-beta(1) and the progressive accumulation of fibronectin in kidney of diabetic rats were attenuated by Wu-Ling-San. Not only the elevated levels of advanced glycation end products (AGEs) and mitochondrial thiobarbituric acid-reactive substance, but also the higher levels of N(epsilon)-(carboxymethyl)lysine and receptor for AGEs in kidney of diabetic rats were ameliorated by Wu-Ling-San.

CONCLUSIONS: : Wu-Ling-San possess an anti-diabetic property with plasma glucose lowering action accompanied with amelioration of glycation-mediated renal damage.

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