Objective To investigate the effect of TanshinoneⅡA (TSN) on the cell hypertrophy induced by angiotensinⅡ(AngⅡ) in the primary culture of neonatal rat cardiomyocytes. Method The effect of TSN on cardiomyocyte was evaluated by the 3-[4, 5-dimethylthiazol-2-yl] -3, 5-diphenylformazan (MTF) assay. As the index of eardiomyocyte hypertrophy, protein synthesis rate was measured by H-Leucine incorporation and the cell size was determined by phase contrast microscope. The proto-oncogene c-los mRNA and c-jun mRNA expression was assessed using reverse transcription polymerase chain reaction (RT-PCR). Results Exposure of the myocytes to TSN (5～80 mmol/L) for 24hours produced no cytotoxicity. Protein synthesis rate and proto-oneogene c-fos and c-Jun mRNA expression of eardinmyoeytes increased significantly after AngⅡtreatment, and TSN inhibited these effect of AngⅡ.Conclusions TSN can prevent the hypertrophy of eardiomyocytes induced by AngⅡ, which be attributable relate to the decreased expression of proto-oncogene c-los and c-jun mRNA by TSN.

Objective To evaluate the influence of self-etch adhesive,total-etch adhesive and glass ionomer cement on the marginal microleakage of class II restorations. Methods Thirty human premolars were randomly divided into 3 groups(n=10),and cuboid class II cavities(4.0 mm?3.5 mm?2.5 mm) were prepared.Restoration was performed using self-etch adhesive+nano-resin(self-etch group),total-etch adhesive + nano-resin(total-etch group) or glass ionomer cement(glass ionomer group).Half of each group underwent 200 thermocyclings and the other half underwent 500 thermocyclings.The specimens were immersed in 0.5% basic fuchsin for staining.Each tooth was then evaluated the microleakage at the axial wall and the gingival wall section by section under a stereomicroscope.The data were statistically analyzed. ResultsSelf-etch group had significantly more miroleakage than total-etch group and glass ionomer group after 200 and 500 thermocyclings(P

Objective To study the effects of YinlingⅠon expelling lead and the improvement of the ability of learning memory in lead poisoned mice.Methods Poisoning model of lead was prepared by drinking water with lead acetate,and the administration of YinlingⅠor EDTA-Na_2Ca to lead poisoned mice was performed.Lead content was detected in blood, brain and bone.The ability of lear- ning and memory of mice was measured monthly by Y-water maze test. Ultrastructure of CA3 cell in hippocampus was observed with transmission electron microscope.Results After administration of YinlingⅠ,the lead content in blood, brain and bone decreased remarkably, the ability of learning and memory increased,and the ultrastructure changes of CA3 cell in hippocampus markedly dimi- nished.Conclutions YinlingⅠ may expel lead of the mice with lead poisoning and improve their ability of learning and memory.

Hearing Loss, Sensorineural ; genetics ; Humans

Objective To evaluate the role of transesophageal echocardiography (TEE) in perioperative period of pediatric patients with congenital heart disease (CHD).Methods From July 2011 to December 2012,TEE was used in 393 pediatric patients(≤ 14 years) with congenital heart disease in perioperative period.We make a retrospective review with the clinical data of these cases.Results Operative schemes or therapeutic schedules of 60 patients(15.3％) were altered according to TEE.By preoperative TEE,the diagnosis of transthoracic echocardiography (TTE) of 4 cases(1.0％) were amended,4 cases (1.0％) were complemented,and 4 cases (1.0％) got the auxiliary diagnosis,among which operative schemes of 11 cases (2.8％)were altered.During the operate,29 cases(7.4％) found residual problems,11 cases(2.8％) got the auxiliary diagnosis.By postoperative TEE,7 cases(1.8％) found residual problems,1 case(0.3％) got the auxiliary diagnosis.Complications occurred in 9 cases(2.3％) of the 393 patients.Oral and pharyngeal mucous membrane bleeding occurred in 7 cases (1.8％),inadvertent tracheal extubation in 2 cases(0.5％).Conclusion TEE plays an important role in confirming preoperative diagnoses,formulating surgical plans,evaluating immediate operative results,identifying patients with residual defects and guiding the therapeutic schedule in perioperative period of pediatric patients with congenital heart disease.

OBJECTIVETo study the chemical constituents in the root of Hedysarum polybotrys Hand.-Mazz..

METHODThe constituents were isolated by Sephadex LH-20 and silica gel column chromatography, and their structures were identified on the basis of spectral analysis.

RESULTFive compounds, medicarpin (I), 3-hydroxy-9-methoxycoumestan (II), 3, 9-dihydroxycoumestan (III), beta-sitosterol (IV), beta-sitosterol-3-O-beta-D-glucoside (V) were obtained.

CONCLUSIONCompounds II, III, V were obtained from the plant for the first time.

Fabaceae ; chemistry ; Molecular Structure ; Plant Extracts ; chemistry ; isolation & purification ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Pterocarpans ; chemistry ; isolation & purification

Objective To investigate the efficacy and safety of transcatheter arterial chemoembolization (TACE) combined with CT-guided thermal ablation (radiofrequency ablation or microwave ablation) in treating intrahepatic cholangiocarcinoma.Methods The clinical data of 14 patients with pathologicallyproved intrahepatic cholangiocarcinoma,who were admitted to authors' hospital during the period from September 2009 to July 2013 to receive TACE with subsequent radiofrequency ablation (RFA) or microwave ablation (MWA),were retrospectively analyzed.A total of 18 lesions were detected in the 14 patients.The maximal diameter of the lesion (or the sum of maximal diameters if there were multiple lesions) ranged from 2.2 cm to 7.2 cm (mean 4.2±1.4 cm).After TACE,the lesion's complete ablation rate,surgical complications,tumor-free survival time and overall survival time were evaluated.Results Complete ablation was obtained in 15 lesions (83.3％,15/18).The incidence of moderate complications was 6.2％,and no severe complications or death occurred.After the treatment,the patients were followed up for 6-14 months,with a mean of (16.0±10.3) months.At the end of follow-up,6 patients (42.9％,6/14) died.The median tumor-free survival time in patients whose lesions obtained complete ablation was 17 months.The median survival time of all patients was 20 months.The 1-,2-and 3-year overall survival rates were 82.5％,41.3％ and 20.6％ respectively.Conclusion TACE combined with thermal ablation can be regarded as one of the treatment options for intrahepatic cholangiocarcinoma.

Objective To evaluate the influence of thermal damage on the cell proliferation,invasive metastasis and epithelial-mesenchymal transition of hepatocellular carcinoma (HCC) through experiments in vitro,and to explore the relationship between thermal ablation and the recurrence,metastasis of HCC.Methods The McA-RH7777 HCC cell thermal damage model was established by using external heating method.The effect of thermal damage on the proliferation of HCC cells was detected by Kit-8 assay (CCK-8),and the cell cycle changes were studied by flow cytometry.The effect of thermal damage on the invasion potential of HCC cells was assessed by using Transwell assay.Fluorescence quantitative polymerase chain reaction (RT-PCR) and Western blot were used to evaluate the influence of thermal damage on HCC cell invasion potential,and on the mRNA and protein expression levels of EMT-related molecular markers,including VEGF,MMP-9,Nm23,E-cadherinand vimentin.Results Heating treatment of McA-RH7777HCC cells was performed by putting the cells in 43.5℃ water basin for 30 min.Two to five days after heating treatment the cell proliferative ability was significantly higher than that of control group (P＜0.05).At 48-72hours after heating treatment the proportion of HCC cells in G1 phase was obviously reduced and the proportion of HCC cells in S+G2 phase was significantly increased,the differences were statistically significant (P＜0.05).Compared with the control group,the difference in HCC cell invasion potential determined at 24 h after heating treatment was not significant,while the HCC cell invasion potential determined at 72 h after heating treatment was strikingly increased (22.3±2.46 vs.14.2±l.82,P＜0.001).Real-time PCR and Western blotting results indicated that at 72 h after heating treatment the expression levels of VEGF,MMP-9 and vimentin were significantly increased,while the expression level of E-cadherin was remarkably decreased,the differences were statistically significant (P＜0.05).Conclusion Thermal damage with sub-lethal heating dose can induce McA-RH7777 HCC cell to develop epithelial-mesenchymal transition and to enhance its proliferation and invasive metastasis potential,and HCC cells show higher malignant potential.

OBJECTIVETo explore the effects of Tanshinone II A (Tan II A) on the myocardial apoptosis in rats with heart failure and its mechanisms for regulating the miR- 133 levels.

METHODSThe heart failure rat model was established by thoracic aorta constriction (TAC). Tan II A Injection was applied for 12 successive weeks. Meanwhile, partial heart failure rats were subcutaneously implanted with osmotic pump of antagonist to observe its inhibition on the miR-133 level. Twelve weeks later, the hemodynamic conditions, the myocardial apoptosis (using TUENL method), myocardial pro-apoptotic genes (Bax and Caspase-3), and the expressions of anti-apoptosis genes (Bcl-2) (using Western blot and RT-PCR method) were analyzed.

RESULTSCompared with the sham-operation group, TAC operation could deteriorate the heart function (except the mean arterial pressure), elevate the myocardial apoptosis level, increase the protein and mRNA levels of Bax and Caspase-3, and down-regulate the protein and mRNA levels of miR-133 and Bcl-2. TAC rats treated by Tan II A could significantly improve all indices with statistical difference except the heart rate. Subcutaneously pumping of antagonist could partially abolish the anti-apoptosis effect of Tan II A.

CONCLUSIONTan II A could decrease the myocardial apoptosis level of heart failure rats, which was possibly realized by up-regulating the miR-133 level.

Animals ; Apoptosis ; drug effects ; Diterpenes, Abietane ; pharmacology ; Heart Failure ; metabolism ; Male ; MicroRNAs ; metabolism ; Myocytes, Cardiac ; drug effects ; metabolism ; Rats ; Rats, Sprague-Dawley

Aim To identify the potential biomarkers associated with carbon tetrachloride(CCl 4 )-induced a-cute hepatic injury in rats and explore the therapeutic effect of Hugan Tablets(HGT). Methods The model was established by intraperitoneal injection of CCl4 in oil(1 : 1,V/ V)with a dosage of 1 mL·kg - 1 body weight to rats once. The levels of aspartate aminotrans-ferase(AST),alanine aminotransferase(ALT),alka-line phosphatase (ALP ) and lactate dehydrogenase (LDH)in serum of rats were determined. Moreover,a proton nuclear magnetic resonance (1 H-NMR)based metabonomic approach in combination with multivariate data analysis was applied to demonstrate CCl4-induced acute hepatic injury metabolic perturbations in rat urine and feces and identify the corresponding metabolic bio-markers. The intervention effect of HGT was evaluated based on the changes of metabolic phenotype and po-tential biomarkers related to acute hepatic injury. Re-sults The levels of AST,ALT,ALP and LDH in ser-um of rats with acute hepatic injury were significantly reduced by administration of HGT,respectively. The disturbed metabolic state associated with CCl4-induced acute hepatic injury in rat urine and feces could be re-stored by HGT. Meanwhile,five potential biomarkers (2-oxoglutarate,citrate,creatinine,trimethylamine N-oxide,hippurate)in rat urine and three potential bio-markers(butyrate,glucose,uracil)in rat feces related to acute hepatic injury were reversed by administration of HGT,respectively. Conclusion HGT exerts pro-tective effects against CCl4-induced acute hepatic inju-ry in rats,which is probably mediated by regulation of tricarboxylic acid cycle and gut microbiota metabolism.