ABSTRACT
Aim To investigate the influence of Ramu-lus mori polysaccharides ( RMP) on blood glucose and anti-oxidative effect in streptozotocin ( STZ )-induced diabetic mice .Methods Diabetic mice were induced by intraperitoneal injection with 120 mg? kg -1 STZ and were randomly divided into the following 5 groups with 20 animals per group: model group , valsartan group ( 20 mg? kg -1 ) , low-, medium-, high-dose (0.3,0.6,1.2 g? kg -1 ) of RMP groups.Other 20 normal mice were treated as normal control group .The mice were administered orally for 90 d.On 45 d of ad-ministration , the 24 h urine was collected through met-abolic cages for urine protein detection .Pathological changes of kidney tissues were observed through HE staining .The serum levels of urea nitrogen ( BUN) and creatinine ( Cr ) were detected by automatic biochemical analyzer; and the manganese superoxide dismutase (Mn-SOD), catalase(CAT), malonaldehyde(MDA) and mitochondrial respiratory chain complex Ⅰ,Ⅲac-tivity of kidney tissues were also determined .ELISA method was used to detect ROS content in renal cortex . The SIRT1 , FOXO1 and NF-κB protein expressions were analyzed by Western blot .Results Compared with model group, the FBG, microalbuminuria, BUN and Cr were decreased by RMP medication ( P <0.05).The activities of Mn-SOD, CAT and mitochon-drial respiratory chain complex Ⅰ,Ⅲ in RMP groups were enhanced , while MDA and ROS levels were re-duced. Moreover, the expressions of SIRT1 and FOXO1 were up-regulated by RMP , the expression of NF-κB was down-regulated ( P<0.05) .Conclusion RMP exerts renal protective effect through up-regula-ting the expressions of SIRT1 and FOXO1 in renal cor-tex , which may relate to the improvement of anti-oxida-tive capability .
ABSTRACT
Objective To observe the hemolysis,allergic reactions and stimulation of Polydatin Injection(PI),thus to provide evidence for clinical medication.Methods Hemolysis was observed by in-vitro rabbit blood hemolysis.Sys- temic allergy and passive skin allergy were tested on guinea pigs and rats.Vascular stimulation and muscle stimulation were tested on rabbits.Results There was no hemolysis or reaction in erythrocyte agglutination 30,60 and 180 rain after adding PI.No systemic anaphylaxis was found in guinea pigs.There was no skin allergy passive in rats.There was no vascular stimulation or muscle stimulation after injecting PI(0.39 mg/mL)5.6 mg/kg into rabbit ears.Con- clusion Under experimental conditions,PI(0.39 mg/mL)shows no hemolysis in vitro or agglutination reaction;it has no systemic anaphylaxis or passive skin allergy;it either has no stimulating effect in rabbit auricular vessels and muscles.