Objective: To study the mechanism and effect of Chinese medicine Yiqi Tongyang Huatan prescription(益气通阳化痰方,YQTYHT) on hyperlipidemia and atherosclerosis(AS).Methods: The rabbit′s model was established by feeding the food containing high cholesterol,and 32 rabbits were randomly divided into four groups(each n=8): normal group,model group,Huoxue Huayu prescription treatment group(活血化瘀方,HXHY group) and YQTYHT treatment group(YQTYHT group).Before the experiment,at the end of 6 th and 12 th weeks after the experiment,the following items were measured: blood lipids platelet aggregation rate,platelet adhesion rate,malondialdehyde(MDA),endothelin-1(ET-1),nitric oxide(NO),the ratio of the lipid plaque area and the thickness of the endothelial plaque.Results: After feeding the food containing high cholesterol,the blood lipids,platelet aggregation rate,platelet adhesion rate,MDA,ET1,the ratio of lipid plaque area and the thickness of plaque were elevated significantly,while serum NO3-/NO2-decreased significantly in model group.Compared with the model group,the blood lipids were lower in the two treatment groups,and the blood lipid regulating effect in YQTYHT group was significantly better than that in HXHY group.Platelet aggregation rate and platelet adhesion rate of YQTYHT group and HXHY group were lower than those in the model group,but the degree of lowering in YQTYHT group and HXHY group had no significant differences.The serum MDA of YQTYHT group and HXHY group was lower than that in model group,and the lowering effect in YQTYHT group was better than that in HXHY group.YQTYHT group and HXHY group had a significant increase on the level of serum NO3-/NO2-and a decrease on the content of plasma ET-1,furthermore,the effects in the former group were significantly better than those of the latter group.The area of atherosclerotic plaque coverage in aorta and the thickness of plaque of HXHY group were larger than those in YQTYHT group(both P

[ ABSTRACT] AIM:To construct a lentiviral vector for stable delivery of the ER-α36 gene and to detect its effect on SGC7901 cell growth.METHODS: The efficient RNAi targeting sequences identified for the ER-α36 gene were screened.The Oligo DNA was synthesized with target sequences and annealed to form double-stranded DNA.Then it was digested by Xho I and EcoR I and connected with GV307 vector to produce LV-ER-α36-RNAi lentiviral vector.PCR was used to screen the positive clones and sequence.The LV-ER-α36-RNAi, pHelper 1.0 and pHelper 2.0 plasmids were co-transfected into 293T cells for producing lentiviral vector and infecting SGC7901 cell line.Fluorescence microscopy, real-time PCR and Western blotting were used to detect the transfection efficiency and gene silencing effect.17β-estrodial at concentration of 1 ×10 -10 mol/L was used to stimulate the recombinant cell line, and the action on the growth of gastric cancer cells and the expression of Src, ERK1/2 and cyclin D1 were determined.RESULTS: DNA sequencing analysis confirmed the identity of recombinant shRNA expression vectors.Immunofluorescence assay demonstrated that transfection efficiency was above 80%.Transfection of LV-ER-α36-RNAi significantly knocked down the expression of ER-α36 at mR-NA and protein levels with tetracycline ( TeT) simulating as revealed by real-time PCR and Western blotting.Compared with control group, the growth of the recombinant cell line declined and the expression of Src, ERK1/2 and cyclin D1 and the activation of Src decreased (P<0.05).CONCLUSION: Lentiviral vectors that silence ER-α36 expression are con-structed successfully and can be used to study the role of ER-α36 in gastric cancer.The ER-α36 is related with many kinds of cancer cell growth, including gastric cancer cells.

This study investigated the effects and molecular mechanisms of genistein in improving insulin resistance induced by free fatty acids (FFAs) in HepG2 hepatocytes. A model of insulin resistance in HepG2 cells was established by adding palmitic acid (0.5 mmol/L) to the culture medium and the cells were treated by genistein. Glucose consumption of HepG2 cells was determined by glucose oxidase method. The levels of c-jun N-terminal kinase (JNK) phosphorylation, insulin receptor substrate-1 (IRS-1) Ser307 phosphorylation, JNK, IRS-1, phosphatidylinositol-3-kinase p85 (PI-3K p85) and glucose transporter 1 (GLUT1) proteins were detected by Western blotting. The results showed that after the treatment with palmitic acid for 24 h, the insulin-stimulated glucose transport in HepG2 cells was inhibited, and the glucose consumption was substantially reduced. Meanwhile, the expressions of IRS-1, PI-3K p85 protein and GLUT1 were obviously reduced, while the levels of JNK phosphorylation and IRS-1 Ser307 phosphorylation and the expression of JNK protein were significantly increased, as compared with cells of normal control. However, the aforementioned indices, which indicated the existence of insulin resistance, were reversed by genistein at 1-4 μmol/L in a dose-dependent manner. It was concluded that insulin resistance induced by FFAs in HepG2 hepatocytes could be improved by genistein. Genistein might reverse FFAs-induced insulin resistance in HepG2 cells by targeting JNK.

The effects of Cinnamon granules on pharmacokinetics of berberine in Rhizoma Coptidis granules in healthy male volunteers, and the compatibility mechanism of Jiao-Tai-Wan (JTW) composed of Rhizoma Coptidis granules and Cinnamon granules were investigated. The concentration of berberine in plasma of healthy male volunteers was determined directly by high performance liquid chromatography (HPLC) after an oral administration of Rhizoma Coptidis granules alone or combined with Cinnamon granules (JTW). The plasma concentration-time curves of berberine were plotted. The data were analyzed with Drug and Statistics (DAS) 2.0 pharmacokinetic program (Chinese Pharmacology Society) to obtain the main pharmacokinetic parameters. The results showed that the plasma concentration-time curve of berberine was described by a two-compartment model. The C(max), T(max), t(1/2) and CLz/F of berberine in Rhizoma Coptidis granules were 360.883 μg/L, 2.0 h, 3.882 h, 119.320 L·h(-1)·kg(-1) respectively, and those of berberine in JTW were 396.124 μg/L, 1.5 h, 4.727 h, 57.709 L·h(-1)·kg(-1) respectively. It was suggested that Rhizoma Coptidis granules combined with Cinnamon granules could increase the plasma concentration of berberine, promote berberine absorption and lengthen the detention time of berberine in healthy male volunteers.

OBJECTIVETo determine and analyze plasma ammonia concentration difference of the portal vein system and ramifications of rabbits and consequently guide selection of the portal vein in transjugular intrahepatic portosystemic shunt (TIPS) so that reduce shunt-induced hepatic encephalopathic incidence. To evaluate clinical significance of transjugular intrahepatic left branch of portal vein portosystemic shunt (TILPS) and to analyse hemodynamics of both branches of the portal vein and to observe long-term results in the prevention of encephalopathy.

METHODSBlood samples in different portal vein branches of rabbits were collected and the plasma ammonia concentration was assayed and compared. The left branch of portal vein was used as the puncture site to perform TILPS and to keep away from the right branch of portal vein blood that contains nutrition and toxin.

RESULTSPlasma ammonia content was superior in the mesenteric vein and higher than the portal vein branch, the splenic vein, and the vena cava. The right portal vein was above the left. Encephalopathy did not occur in all patients within 3 months. Of the 341 patients undergoing TILPS, encephalopathy occurred in only 5 patients (1.47%) and shunt abnormalities in 19 patients (5.57%) verified by venography during overall follow-up period.

CONCLUSIONSSelective left branch of the portal vein portosystemic shunt can decrease encephalopathy obviously and protect liver function.

Adult ; Aged ; Ammonia ; blood ; Animals ; Female ; Follow-Up Studies ; Hepatic Encephalopathy ; blood ; etiology ; prevention & control ; Humans ; Male ; Middle Aged ; Portal Vein ; surgery ; Portasystemic Shunt, Transjugular Intrahepatic ; adverse effects ; Rabbits ; Treatment Outcome

The effects of Cinnamon granules on pharmacokinetics of berberine in Rhizoma Coptidis granules in healthy male volunteers,and the compatibility mechanism of Jiao-Tai-Wan (JTW) composed of Rhizoma Coptidis granules and Cinnamon granules were investigated.The concentration of berberine in plasma of healthy male volunteers was determined directly by high performance liquid chromatography (HPLC) after an oral administration of Rhizoma Coptidis granules alone or combined with Cinnamon granules (JTW).The plasma concentration-time curves of berberine were plotted.The data were analyzed with Drug and Statistics (DAS) 2.0 pharmacokinetic program (Chinese Pharmacology Society)to obtain the main pharmacokinetic parameters.The results showed that the plasma concentration-time curve of berberine was described by a two-compartment model.The Cmax,Tmax,t1/2 and CLz/F of berberine in Rhizoma Coptidis granules were 360.883 μg/L,2.0 h,3.882 h,119.320 L·h-1·kg-1 respectively,and those of berberine in JTW were 396.124 μg/L,1.5 h,4.727 h,57.709 L·h-1·kg-1 respectively.It was suggested that Rhizoma Coptidis granules combined with Cinnamon granules could increase the plasma concentration of berberine,promote berberine absorption and lengthen the detention time of berberine in healthy male volunteers.

This study investigated the effects and molecular mechanisms of genistein in improving insulin resistance induced by free fatty acids (FFAs) in HepG2 hepatocytes.A model of insulin resistance in HepG2 cells was established by adding palmitic acid (0.5 mmol/L) to the culture medium and the cells were treated by genistein.Glucose consumption of HepG2 cells was determined by glucose oxidase method.The levels of c-jun N-terminal kinase (JNK) phosphorylation,insulin receptor substrate-1 (IRS-1) Ser307 phosphorylation,JNK,IRS-1,phosphatidylinositol-3-kinase p85 (PI-3K p85) and glucose transporter 1 (GLUT1) proteins were detected by Western blotting.The results showed that after the treatment with palmitic acid for 24 h,the insulin-stimulated glucose transport in HepG2 cells was inhibited,and the glucose consumption was substantially reduced.Meanwhile,the expressions of IRS-1,PI-3K p85 protein and GLUT1 were obviously reduced,while the levels of JNK phosphorylation and IRS-1 Ser307 phosphorylation and the expression of JNK protein were significantly increased,as compared with cells of normal control.However,the aforementioned indices,which indicated the existence of insulin resistance,were reversed by genistein at 1-4 μmol/L in a dose-dependent manner.It was concluded that insulin resistance induced by FFAs in HepG2 hepatocytes could be improved by genistein.Genistein might reverse FFAs-induced insulin resistance in HepG2 cells by targeting JNK.

Objective:To comprehensively analyze the medical resources and services supply in the cancer field of China.Methods:Data of 2018 were sampled from 41 tertiary public cancer hospitals in China, and the factor analysis method was used to extract common factors in resources or services, scoring respectively. Pearson correlation analysis was used in the collinearity test of the variables of both groups of common factors, while the second-order clustering method was used to analyze characteristic differences between the hospitals, and category difference was compared with t test. Results:Resource evaluation covered the two dimensions of basic resources(medical service and basic assurance resources)and high-end resources(high-end talents and academic resources). Service evaluation covered the two dimensions of medical service assurance(clinical services and basic assurance)and disciplinary sphere of influence(discipline construction and clinical efficiency). The factor of basic manpower and beds was significantly correlated with that of medical service and basic assurance( r=0.811, P<0.001), while the factor of high-end talents and academic resources was significantly correlated with that disciplinary construction and resource efficiency( r=0.906, P<0.001). The second-order cluster analysis found the 41 cancer hospitals as two categories, with the first category of five in Guangdong, Shanghai, Beijing and Tianjin, and the second category of the rest 36 hospitals. Significant differences were found between the two categories in terms of resource scoring, service scoring, high-end resources and disciplinary sphere of influence( P<0.001). Meanwhile, the GDP per capita of the cities in which these hospitals are located also had significant differences( P<0.001). Conclusions:Development of public tertiary cancer hospitals in China was imbalanced, as their differences were mainly found in levels of disciplinary development and efficiency of clinical services, which were closely related to the high-end talents and academic resources of the hospital in question.Furthermore, high quality medical care was mostly located in regions of higher development. The authors recommend to take a balanced consideration of the differences and distribution of cancer care services in China, in terms of performance classification of public hospitals and establishment of regional cancer centers of the country.