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.

Aged ; Female ; Humans ; Neurilemmoma ; Pharyngeal Neoplasms

Adult ; Calcinosis ; Humans ; Male ; Pharyngeal Diseases

Chromatography, Gas ; methods ; Ethanol ; blood ; Humans ; Methanol ; blood

To study the pharmacokinetics of ~(131)I-Metuximab injection (Licartin) combined with transarterial chemoembolization (TACE) for treatment of hepatocellular carcinoma (HCC). MethodsLicartin (27.75 MBq/kg) and the mixture of anticancer drug and Lipiodol were sequentially administered with interval of 20 minutes to 15 patients with HCC via a transfemoral catheter.After the Licartin was administrated, the pharmacokinetic and biodistribution data were evaluated through venous blood samples,urine collections,and 4 γ-scintigraphies (SPECT) over 7 days. The pharmacokinetic parameters were determined from integration of the blood radioactivity-time curves using the SPSS 12.0 software. The tumor-no-tumor ratio (T/NT) was calculated by ROI. Absorbed doses in organ were estimated according to the medical internal radiation dose formalism. The biodistribution of licartin within patient's body at different time points was compared for various organs using analysis of variance for repeated measures, as well as the T/NT ratio. ResultsThe blood radioactivity-time curves followed the dynamics two-compartment model, with the major pharmacokinetic parameters including t_(1/2)α(1.96±1.65) h, and t_(1/2)α(19.07±5.91) h,and t_(1/2)β (57.09±10.92) h, and C_(max) 2.113×10~9min~(-1)·L~(-1), and AUC_(0-∞) 1.302×10~(11) h·min~(-1)·L~(-1), respectively. The accumulated urine radioactivity was 52.2% of administrated dosage during 144 h after administration. There were statistical significant difference of biodistribution of licartin and T/NT ratio between organs at different time points (F=6.583, P<0.01 and F=3.546, P<0.01). SPECT scans showed the significant accumulation of the radioconjugate in liver tumor and faint uptake in other organs for 14 days. Tumor-to-liver ratio decreased from 2.88±1.02 at 3 h to 1.64±0.40 at 168 h (n=7). Organ absorbed dose was (3.19±1.01) Gy in liver (n=12) and (0.55±0.09) Gy in red marrow (n=7). ConclusionLicartin combined with TACE for treatment of HCC is helpful to significantly accrete the radioconjugate in liver tumor, and protect normal organs from radiotoxictiy.

Absract: Objective To report the result of annual monitoring and analysis of nasopharyngeal virus in children with respiratory tract infections in Nanxiang, Shanghai District. Methods Nasopharyngeal secretions were collected from 4389 children with acute respiratory tract infection in outpatient department from January 2007 to September 2013, 9 common respiratory viruses were analyzed by Multiplex RT-PCR, including inlfuenza virus (FLU), parainlfuenza virus (PIV), respiratory syncytical virus (RSV) , adenovirus (ADV), human bocavirus(HBOV), human coronavirus(Cov), enterovirus(EV), human metapneumovirus(HMPV), and rhinovirus(HRV). The same analysis was done in 123 asymptomatic children during the same period. Results The positive rate of detected respiratory viruses in children with respiratory tract infections in nasopharyngeal secretions were 34.8% (1526/4389), including FLU 10.3% (453/4389), RSV 7.3% (320/4389), PIV 6.2%(274/4389), ADV 3.3%(146/4389), HBOV 2.7%(118/4389), EV 2.5%(110/4389), Cov 2.4%(105/4389), HRV 1.6%(72/4389), HMPV 1.5%(67/4389);two and more combined respiratory viral infection were found in 273 cases (6.2%). The virus detection
rate between age groups was signiifcantly different (χ2=41.91, P<0.001). The school-age group had the lowest positive rate of 23.4%and the positive rates in other three groups were all higher than 35.0%. The infant group had the higher positive rate of RSV and HRV. FLU detection rate in school-age group was 13.6%. Respiratory viruses in children with asthmatic disease has high detection rate. RSV infection rate was the highest 14.8%(30/204) in the asthmatic disease group, followed by HBOV 13.8% (28/204). In nasopharyngeal secretions of 123 asymptomatic children, virus-positive detection rate of 6.5% (8/123), which showed signiifcant difference from that in respiratory virus infection group (χ2=42.60, P<0.001). Conclusions In seven consecutive years of testing, the inlfuenza virus and respiratory syncytial virus play an important role in children with respiratory tract infections in this region. The detection rate of virus showed difference between different age groups and a higher detection rate of RSV in infants with respiratory tract infections was observed. The overall detection rate of virus was decreased with the increase of age excluding the inlfuenza virus.

Objective To evaluate the acute and delayed killing effect of high intensity focused ultrasound (HIFU) on Echinococcus granulosus(E. granulosus)protoscolices in vitro.Methods E. granulosus protoscolices were treated with different dosage of effective power(0,25,50,100,200,250 W)and time(5,10,20,30,40,50,60 s)of HIFU in vitro to obtain the dosage-effect curves.Then the survival pmtoscolices were incubated,and the mortality of each group was counted daily.The protoscolicidal effects were investigated by trypan blue exclusion assay.Results Compared with the untreated group,the Vitality of E.granulosus protoscolices significantly decreased immediately after treated by HIFU of different dosage(F=5201.59 vs 1865.65,P＜0.05),there were the interaction both different dosage and time(F=214.50,P＜0.05).The protoscolices were broken into pieces by HIFU of 250 W×40 s,whereas the growth of the surviving protoscolices after exposed to HIFU was obvious suppressed.Both the acute killing effect and the delayed inhibitory effect showed a dosage-dependant manner.The inhibitory effect increased along with the increased dosage of HIFU(P＜0.05).The inhibitory effect in 50 W×10 s group was stronger than 25 W×20 s group(P＜0.05).The mortality was increased in parallel with the increase of HIFU dosage.Conclusions HIFU show an effective immediately killing effect,as well as a growth-inhibiting effect on the E.granulosus protoscolices in vitro.

Modern drying technology was used to explore suitable drying process to provide scientific basis for improving drying processing methods of Scrophulariae Radix. Controlled temperature and humidity drying, vacuum drying apparatus, microwave vacuum drying apparatus, short infrared drying device were used to gain samples for analyzing. The character appearance, concentration of main components and power consumption indicators were chosen for preliminary judging. Six major components, including iridoids and phenylpropanoids were analyzed by UPLC-MS/MS method. The contents of polysaccharides were determined by UV-visible spectrophotometry. The character appearance with controlled temperature and humidity drying and short infrared drying meet the pharmacopoeia standard (Ch. p, edition 2015), while samples with vacuum and microwave vacuum drying apparatus didn't. Compared to fresh sample, concentrations of harpagide, harpagoside, aucubin and catalpol were lower in the dried samples. Angoroside-C showed no significant change before and after drying. Concentration of acteoside increased after drying. Samples with controlled temperature (70 degrees C) and humidity (15% - 10%) drying had high content and short drying time. The better drying process of Scrophulariae Radix was controlled temperature and humidity drying. The method will provide the reference for the drying technology standard of roots medicine.
Desiccation ; methods ; Drugs, Chinese Herbal ; chemistry ; Plant Roots ; chemistry ; Quality Control ; Scrophularia ; chemistry

Objective To examine the pathological changes in the myocardial tissues such as inflammatory response and fibrosis in a rat model of acute radiation-induced heart damage (RIHD),and to explore whether NF-κB and its downstream pathway are associated with acute radiation-induced myocardial fibrosis.Methods Fourteen nale adult Sprague-Dawley rats were randomly divided into control group and radiation group.Local heart irradiation was delivered to the precordial region of rats to establish an RIHD model in a single fraction with a dose of 20 Gy generated by a 6 MV linear accelerator.At 14 days after irradiation,the histopathological changes in myocardial and interstitial tissues were examined by HE staining;the distribution of collagen fibers was observed by Masson staining,and collagen volume fraction (CVF) was used as a semi-quantitative evaluation for myocardial collagen deposition,which was defined as the percentage of collagen area occupied in total area,and was compared using the independent-samples t test.The protein and mRNA expression levels of the NF-κB members p50 and p65 and the downstream pathway members hypoxia-inducible factor 1α(HIF-1o),connective tissue growth factor (CTGF),and type I (COL-1) were quantitatively analyzed by Western blot and qPCR,respectively.Results At 14 days after local heart irradiation,the radiation group showed significant myocardial edema and derangement,rupturc of some myocardial ceils,mild nuclear pyknosis,darkened nuclear staining,a small number of irregular nuclei,and myocardial interstitial inflammatory cell infiltration accompanied by increased fibroblast,as compared with the control group.The Masson staining showed that the collagen fibers in radiation group were widely distributed at the interstitial tissue and increased significantly compared with those in the control group;normal myocardial cells were in disordered array and had a tendency to be replaced by collagen fibers.The semi-quantitative analysis showed that radiation induced a significant increase in CVF (22.05％ vs.3.76％,P =0.003).Western blot and qPCR revealed that the protein and mRNA expression of p50,p65,HIF-1 α,CTGF,and COL-1 was significantly higher in the radiation group than in the control group (all P ＜ 0.05).Conclusions The pathological features of acute RIHD include significant myocardial edema and myocardial interstitial inflammatory cell infiltration accompanied by increased fibroblasts and collagen fibers.Radiation exposure can activate NF-κB and cause the upregulation of HIF-1α and CTGF at both protein and mRNA levels,which may play an important role in the progression of radiation-induced myocardial inflammation to fibrosis.

OBJECTIVETo observe the effects of sodium tanshinone II A sulfonate (STS) on angiotensin II (Ang II)-induced hypertrophy of myocardial cells through the expression of phosphorylated extracellular signal-regulated kinase (p-ERK1/2).

METHODSIn the primary culture of neonatal rat myocardial cells, the total protein content in myocardial cells was determined by coomassie brilliant blue and the protein synthesis rate was measured by [3H]-Leucine incorporation as indexes for hypertrophy of myocardial cells. The expression of p-ERK1/2 was determined using Western blot and immunofluorescence labeling.

RESULTS(1) The total protein and protein synthesis rate increased significantly in contrast to the control group after the myocardial cells were stimulated by Ang II (1 micromol/L) for 24 h; STS markedly inhibited the increment of the total protein level induced by Ang II and the syntheses of protein. (2) After pretreatment of myocardial cells with Ang II (1 micromol/L) for 5 min, the p-ERK1/2 protein expression was increased, with the most obvious effect shown at about 10 min; pretreatment of myocardial cells with STS at different doses (2, 10, 50 micromol/L) for 30 min resulted in obvious inhibition of the expression of p-ERK1/2 stimulated by Ang II in a dose-dependent manner. (3) After the myocardial cells were stimulated by Ang II (1 micromol/L), the immunofluorescence of ERK1/2 rapidly appeared in the nucleus. The activation and translocation process of ERK1/2 induced by Ang II was blocked distinctly by STS.

CONCLUSIONSTS inhibited the myocardial cell hypertrophy induced by Ang II, and the mechanism may be associated with the inhibition of p-ERK1/2 expression.

Angiotensin II ; pharmacology ; Animals ; Hypertrophy ; Leucine ; metabolism ; Mitogen-Activated Protein Kinase 1 ; metabolism ; Mitogen-Activated Protein Kinase 3 ; metabolism ; Myocytes, Cardiac ; drug effects ; enzymology ; pathology ; Phenanthrenes ; pharmacology ; Phosphorylation ; drug effects ; Protein Biosynthesis ; drug effects ; Protein Transport ; drug effects ; Rats ; Rats, Wistar ; Tritium