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Objective:To investigate the protective effect and possible mechanism of Tangshenbao on renal damage in diabetic nephropathy (DN) rats.Methods:Totally 36 SPF male SD rats were randomly divided into normal group ( n=6) and model group ( n=30). The DN rat model was prepared by single high-dose intraperitoneal injection of STZ. According to the random number table method, the rats were divided into model group, irbesartan group and Tangshenbao low-, medium- and high-dosage groups, with 6 rats in each group. Drug intervention lasted for 8 weeks. The general condition and body weight of rats in each group were recorded. The blood glucose, kidney index, 24 h urine protein (24 h UTP), SCr and BUN levels were detected. The pathological morphology of renal tissue was observed by PAS staining and transmission electron microscopy. The mRNA and protein expressions of Ets-1, TGF-β1, Smad2 and Smad3 in renal tissue were detected by real-time fluorescence quantitative PCR and Western blot. Results:Compared with model group, the body weight of Tangshenbao low, medium and high dose groups and irbesartan group significantly increased ( P<0.01). The kidney index decreased ( P<0.05 or P<0.01). The contents of 24 hUTP, BUN and SCr significantly decreased ( P<0.05 or P<0.01). Glomerular volume was significantly reduced ( P<0.05 or P<0.01), the mRNA expressions of Ets-1 (1.59 ± 0.06, 1.47 ± 0.04, 1.31 ± 0.03, 1.39 ± 0.03 vs. 1.64 ± 0.04), TGF-β1 (1.65 ± 0.05, 1.59 ± 0.03, 1.38 ± 0.05, 1.49 ± 0.04 vs. 1.77 ± 0.08), Smad2 (1.48 ± 0.05,1.39 ± 0.05, 1.22 ± 0.03, 1.31 ± 0.04 vs. 1.54 ± 0.05), Smad3 (1.57 ± 0.04, 1.48 ± 0.03, 1.28 ± 0.03, 1.39 ± 0.02 vs. 1.64 ± 0.05) in renal tissue of rats significantly decreased ( P<0.05 or P<0.01), the protein expressions of Ets-1 (1.33 ± 0.32, 1.16 ± 0.38, 0.77 ± 0.06, 0.84 ± 0.06 vs. 1.97 ± 0.43), TGF-β1 ( 1.35 ± 0.14, 1.24 ± 0.22, 0.94 ± 0.13, 1.07 ± 0.06 vs. 1.63 ± 0.20), Smad2 (1.24 ± 0.26, 1.14 ± 0.31, 0.77 ± 0.28, 0.85 ± 0.19 vs. 1.72 ± 0.34) and Smad3 (1.29 ± 0.14, 1.19 ± 0.21, 0.85 ± 0.39, 0.90 ± 0.37 vs. 1.76 ± 0.21) decreased ( P<0.05 or P<0.01). Conclusion:Tangshenbao can improve renal damage in DN rats, and its mechanism may be related to the inhibition of Ets-1 expression and TGF-β1/Smads signaling pathway.
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Objective To investigate the protection effects and possible mechanism of apoptotic effect of compound Xiancao granules on renal ischemia reperfusion injury ( IRI ) in rats. Methods Renal IRI rat model was established by clipping bilateral renal artery.The rats were divided into model control group (n=10), compound Xiancao granules group (n=10) and sham operation group (n=10).All Serum creatinine (Cr) and blood urea nitrogen (BUN) were determined to evaluate kidney function after IRI.Superoxide dismutase (SOD), glutathione peroxidase (GSH-PX) and malondialdehyde (MDA) activity in kidney were measured by colorimetric method. Expression of apoptotic regulatory genes Bcl-2 and Bax in renal tissue were detected by Western blotting.Renal tissue sections were stained by hematoxylin and eosin (HE) and examined under a light microscope. Results SOD and GSH-PX levels of the compound Xiancao granules group (278.1±16.2),(155.96±20.58) U?mg-1 were significantly higher than those of the model control group (196.3±12.1),(109.34±17.81) U?mg-1 (P<0.05). MDA, BUN and Cr (12.49±1.07) nmol?mL-1,(8.9±2.7) mmol?L-1,(149.7±8.5) μmol?L-1 were significantly reduced in the compound Xiancao granules group as compared with those of the model control group (17.32±1.26) nmol?mL-1,(14.6± 3.3) mmol?L-1,(206.1±11.2) μmol?L-1(P<0.05).Bax and Bcl-2 mRNA expression levels of sham operation group were significantly lower, and the Bax and Bcl-2 mRNA expression levels of model control group were significantly enhanced ( Bcl-2:P<0. 05, Bax: P<0. 01 ) . Bax mRNA expression level of compound Xiancao granules group was significantly decreased as compared with that of model control group ( P<0.05) , but Bcl-2 mRNA expression level of compound Xiancao granules group was significantly enhanced as compared with that of model control group (P<0.01). Conclusion These results suggested that compound Xiancao granules has protection effect on renal IRI in rats. The mechanisms may be related to its antioxidant activity and expression of the apoptotic genes such as Bcl-2 and Bax.
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[Objective] To investigate the effect of Tangshen Granules (a Qi-strengthening and blood-activating prescription mainly composed of Radix Astragali, Rhizoma Chuanxiong, Radix Notoginseng, Radix Puerariae,etc.) combined with irbesartan Tablets (an antagonist of angiotensin Ⅱ receptor) for the treatment of diabetic nephropathy (DN). [Methods] Eighty cases of DN were randomized to two groups: group A ( n = 40) was treated with Tangshen Granules and irbesartan Tablets and group B ( n = 40) with irbesartan Tablets alone as control. The therapeutic effect was observed after 8-week treatment. [Results] Serum creatine (SCr) and blood urea nitrogen (BUN) levels and urinary albumin excretion rate (UAER) were decreased after treatment (P
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【Objective】To observe the therapeutic effect of Shen'ankang Granules(SG)for chronic renal failure(CRF)and to explore its therapeutic mechanism.【Methods】 Seventy-two CRF patients were equally randomized into groups A and B.The two groups were given oral use of Medicinal Charcoal Tablets and routine supportive and symptomatic treatment,and group A was given SG(mainly composed of Radix Astragali,Radix et Rhizoma Rhei,Herba Epimedii,Radix Notoginseng and Rhizoma Curcumae)additionally.The treatment lasted 8 weeks.The therapeutic effect in the two groups was compared after treatment.Meanwhile,the changes of blood urea nitrogen(BUN),serum creatine(SCr),endogenous creatine clearance rate(Ccr),urinary ?_2 microglobulin(?_2-M)and ?-N-acetyglucosamidase(NAG),as well as changes of serum fibrosis-associated proteins of type Ⅳ collagen(C-Ⅳ),type Ⅲ precollagen(PC-Ⅲ)and laminin(LN)levels were detected.【Results】The total therapeutic effect was 86.11% in group A,higher than 61.11% in group B(P0.05).The differences of serum C-Ⅳ,PC-Ⅲ and LN levels were significant between groups A and B(P