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Objective To observe the effect of tanshinone ⅡA on renal transforming growth factor beta 1 (TGF-β1) and nuclear factor-kappa B (NF-κB) p65 mRNA and protein expression in diabetic nephropathy (DN) rats, thus to evaluate the therapeutic effect and mechanism of tanshinone ⅡA. Methods SD rats were used as the experimental animal. DN rat model was induced with 40 mg/kg of streptozocin ( STZ) . The rats were randomized into normal group, model group, and tanshinone ⅡA ( 10 mg·kg -1·d -1, im) group. On the experimental day 30, we examined the body weight, water in-take volume, 24-hour urine protein, fasting glucose ( Glu) , serum creatinine ( Cr) , blood urea nitrogen ( BUN) , total protein ( TP) and albumin ( Alb). Renal slices after periodic acid Schiff staining ( PAS) were used for the observation of renal pathology. Semi-quantitative reverse transcription polymerase chain reaction ( RT-PCR) was used for the detection of renal TGF-β1 and NF-κB p65 mRNA expression, and Western blotting method was used for the measurement of TGF-β1 and NF-κB p65 protein expression in rats of different groups. Results Compared with the normal group, body weight was decreased, water in-take volume and 24-hour urine protein were increased, serum Glu, Cr, and BUN levels were elevated, TP and Alb levels were decreased, renal pathological damage occurred, and renal TGF-β1 and NF-κB p65 mRNA and protein expressin were promoted in the model group (P<0.05 or P<0.01). Tanshinone ⅡA group had an effect on decreasing water in-take volume, 24-hour urine protein, serum levels of Glu, Cr and Bun, increasing TP and Alb levels, relieving renal pathological damage, and reducing the protein and mRNA expression of renal TGF-β1 and NF-κB p65 ( P<0.05 or P<0.01 compared with the model group). Conclusion Tanshinone ⅡA has protective effect on kidney probably through inhibiting renal TGF-β1 and NF-κB p65 expression in DN rats.
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Objective To observe the effect of Tongmai Oral Liquid(TOL) on renal pathological feature and tumor growth factor ?1(TGF-?1) in rats with experimental diabetic nephropathy(DN).Methods Forty SD male rats were used for the experiment.Of which,8 were in the normal group,and the other rats were given one-dose intraperitoneal injection of streptozocin(STZ),and were fed with high-fat forage every other day.The normal group received one-dose intraperitoneal injection of aseptic citric acid-sodium citrate buffer and routine forage.After feeding for 4 weeks,the rat models of DN were randomized into the model group and TOL group,which were given normal saline and TOL(2.5 g?kg-1?d-1) respectively,and the two groups were still fed with high-fat forage.After treatment for 6 weeks,the rats were executed and the pathological features and ultrastructure of renal tissue were observed under light microscope and electron microscope respectively.Mean glomerular area(MGA),mean extracellular matrix area(MMA),and the thickness of glomerular basement membrane(GBM) as well as the ratio of MMA/MGA were measured.Meanwhile,the expression of tumor growth factor ?1(TGF-?1) was detected by immunohistochemical method.Results In TOL group,the pathological features such as broadened mesentery,thick basement membrane and vacuolar degeneration in the renal tubular epithelium were relieved,MMA/MGA ratio was decreased,GBM became thin,and the expression of TGF-?1 was strong mainly in renal tubular and interstitial region while weak in glomeruli,and its area density and integral optimal density were decreased as compared with the model group(P
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【Objective】To observe the effect of Shenkang Pills(SP) on proliferation,extracellular matrix(ECM) secretion and cell cycle of in-vitro cultured rat mesangial cells(MC).【Methods】Sixteen Wistar male rats were randomized into 4 groups: normal serum group,Capoten(5 mg/kg) group,high-and low-dose SP(2.4 and 1.2 g/kg respectively) groups.Except the normal serum group,the rats in other groups received corresponding drugs according to the experimental design,and serum containing drug was isolated and prepared after treatment for 7 days.MC cultured with high glucose(30 mmol/L) in vitro were divided into 5 groups: A(cultured with high glucose 30 mmol/L),B(cultured with 5% normal serum),C(cultured with 5% serum containing Capoten),D and E(cultured with 5% serum containing high-and low-dose SP respectively).Another model group F(cultured with low glucose 10 mmol/L) was also established.After culturing for 72 hours,methyl thiazolyl tetrazolium(MTT) assay was used for the detection of MC proliferation,enzyme-linked immunosorbent assay(ELISA) for fibronectin(FN) content in the culture supernatant and flow cytometer for cell cycle.【Results】The proliferation of MC and FN content in supernatant were increased,and abnormal cell cycle was found in high-glucose group A.SP inhibited MC proliferation,increased the percentage of MC at G0/G1 phase,and decreased the percentage of MC at S phase and G2/M phase.【Conclusion】SP has an inhibition on MC proliferation and ECM secretion induced by high glucose,and its mechanism is probably related with the regulation of abnormal MC cell cycle.
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0.05). The effect of group A was better than that of group B in relieving symptoms and improving routine blood and urine examination indexes, MG and urinary creatinine levels, blood lipid content and renal function (P
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【Objective】To observe the therapeutic effect of Qi-strengthening and yin-nourishing,stasis-removing and regeneration-promoting therapy for clinical diabetic nephropathy(CDN)and to explore its mechanism.【Methods】Eighty CDN patients with Qi-yin deficiency and stasis blocking kidney collaterals were randomized into groups A and B at the proportion of 3∶1 by using random number table.Group B(n=20)was given routine western treatment involving decreasing blood glucose,blood pressure and blood lipid,taking good quality diet with low protein,regulating water-electrolyte disturbance and acid-base balance,and preventing and curing complicated infection.Group A(n=60)was treated with Qi-strengthening and yin-nourishing,stasis-removing and regeneration-promoting herbal medicine(mainly composed of Radix Astragali,Fructus Mori,Radix Scrophulariae,Radix Angelicae Sinensis,Radix Salviae Miltiorrhizae,Radix et Rhizoma Rhei,Stigma Maydis and Rhizoma Chuanxiong).After treatment,the therapeutic effect was compared in the two groups.Meanwhile,the changes of fasting blood glucose,renal kidney,24-hour urinary protein,blood rheology,blood lipid and fibrinogen(FIB),as well as plasma endothelin 1(ET-1),tumor necrosis factor ?(TNF-?)and interleukin 1(IL-1)were observed.【Results】Qi-strengthening and yin-nourishing,stasis-removing and regeneration-promoting herbal medicine relieved the symptoms and signs of the patients,decreased 24-hour urinary protein content,and improved the renal function parameters in renal compensatory and decompensatory stages.The herbal medicine could also decrease blood lipid and fasting blood glucose levels,improve blood rheology indexes,and decrease serum IL-1 and ET-1 levels(P
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Objective To evaluate the effect of Tangshenkang Mixture (TM) on preventing diabetic nephropathy (DN). Methods SD rat model of diabetes was established by intraperitoneal injection of streptozotocin (STZ). Contents of blood sugar,urine sugar and urine albumin in rats were measured. The pathological changes of unilateral kidney were also observed under microscope by HE and PAS staining. Glomerulus dimensions,capillary vessel dimensions and PAS-positive matter area were measured with Pathological Picture Analyzing System. Results ①Obvious albuminuria,enlargement of glomerulus and capillary vessel,increase of PAS-positive matter area were found in model group. ②Urinary protein content in TM group was significantly lower than that in model group and western medicine group(P
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Objective To observe the effect of Bushen Yizhi Prescription (BYP) on learning and memory in ovariec-tomized rats. Methods Three - month - old female SD rats were randomized into mimic operation group, model group, BYP group and estrogen control group. Ovariectomy was operated in the three latter groups. After operation, BYP group was treated with gastric infusion of BYP and estrogen group with subcutaneous injection of estrogen. The changes of refer- ence memory and working memory were tested by Morris water maze. Results & Conclusion Sixteen weeks after ovariecto-my, serum estrogen level was markedly decreased, the working memory became poor and the reference memory remained normal. B YP and estrogen can prevent the reduction of working memory in ovariectomized rats.