AIM:To study the changes of membrane mobility of primary cultured renal proximal tubular cells(PTC) induced by cisplatin and to explore the protective effect of taurine on the changes.METHODS:PTC were established in vitro.Cisplat_in-induced groups:PTC were incubated with cisplatin(6.5,13,26,52?mol/L) for 24h.Taurine groups:PTC were preincubated with taurine(0.1,1,10g/L) for 24h.Then cisplatin(26?mol/L) was added into the culture and continued to incubate for 24h.The membrane mobility of PTC was measured using DPH(1,6-Diphenyl-1,3,5 hexatriene)as fluorescence probe.RESU_LTS:Cisplatin(13,26,52?mol/L) significantly increased the membrane mobility of PTC.The degree of fluorescence polarization(P),the anisotropy(?) and the microviscosity(?) of PTC were significantly reduced(P

Objective To discriminate whether chemical compounds are micronuclei-inducing by counting the ratio of bone marrow micronucleus polychromatic erythrocytes ( MNPCE) dyed with a single fluorescence reagent ( acriding organe, AO) by single-laser flow cytometry.Methods Treating male KM mice and SD rat with cyclophosphamide ( CP) respectively, and counting their frequencies of micronucleated polychromatic erythrocytes ( MNPCE) as well as frequencies of micronucleated normochromatic erythrocytes ( MNNCE ) in bone marrow by AO and a single_laser flow cytometer (FCM), comparing and analyzing the results from different methods.Results The results showed that, along with increasing dose of CP, the ratio of MNPCE also corresponding increase, suggesting significant quantative-efficiency correlation.MNPCE were also counted manually by fluorescence microscopy, and the results showed no significant difference with that by flow cytometry.Conclusions AO_FCM fully automated detection method for the detection of MNPCE and MNNCE in mice and rat bone marrow micronucleus rate is reliable.

Notch signaling is an important evolutionarily conserved pathway involving the fate of cells translation. Additional?ly, this pathway also plays an important role in cartilage formation and maintenance of chondrocytes phenotype, regulation of the prolif?eration, maturation and balance of cartilage matrix metabolism. This paper reviews the composition and activation process of notch sig?naling, and its specific role in cartilage formation.

Objective:To study the relationship betwen the mechanism of autoimmune disease and CD4+CD25+ T cell population in NIK mutated mice-aly mice.Methods:NIK mutated mice-aly/aly mice were used as model,aly/+mice as NIK normal control;cell populations were determined by FACS and the thymus structure were analyzed by immunohistochemistry.Results:The CD4+CD25+CD8- population were remarkably decreased in aly mice;and the UEA-1 positive cells were absent in aly mice.Conclusion:The autoimmune disease in aly mice might be the result of deceased the CD4+CD25+ population;the UEA-1 positive cells might play an important role in the development of CD4+CD25+ population. [

0.05); while in nuclear positive group, the positive rate of p53 was significantly higher than that in nuclear negative one (P

Objective To study the anti-tumor effect of tenacissoside H on Lewis lung cancer mice, and explore its impacts on immune function of tumor-bearing mice. Methods Mice was injected Lewis lung cancer cells subcutaneously to the right axilla. Thirty successful tumor-bearing mice were randomly divided into model group, the cyclophosphamide (CTX) group and tenacissoside H group, 10 mice in each group. Three days after inoculation, mice were intraperitoneally injected by normal saline, CTX and tenacissoside H respectively every two days, 0.2 mL in each mouse. On the 21st day, the eyeballs were extracted and blood was drawn, tumor tissue, spleen and thymus were taken and weighted to calculate tumor inhibition rate, spleen index and thymus index, and the contents of IL-2 and IL-10 were detected by ELISA. Results The tumor weights of CTX group and tenacissoside H group were lower than that of the model group with significant difference (P<0.05), and the tumor inhibition rates were 54.12%, 25.68%. The thymus index and spleen index of tenacissoside H group increased, but that of CTX group decreased significantly. Compared with the model group, the IL-2 level of tenacissoside H group was significantly increased, while the IL-10 level decreased. Conclusion Tenacissoside H can inhibit growth and metastasis of Lewis lung cancer, regulate the expression of IL-2 and IL-10, and improve the immune function of tumor-bearing mice.

Objective To investigate the feasibility, safety and efficacy of endovascular implantation of 125I seeds under the dual-guidance of ultrasound and digital subtraction angiography (DSA) for the treatment of hepatocellular carcinoma (HCC) associated with portal vein tumor thrombus. Methods A total of 30 patients with primary HCC complicated by portal vein tumor thrombus underwent implantation of 125I seeds via portal vein. Guided by ultrasound, percutaneous transhepatic puncturing of portal vein was performed first, then, catheter was inserted, which was followed by transcatheter 125I seeds implantation into the affected portal vein under DSA guidance. The technical success rate, postoperative complications, routine blood tests, liver function, the suppression of portal vein tumor thrombus and survival time were analyzed. Results Successful implantation of 125I seeds was achieved in all patients, no serious procedure-related complications occurred. All patients were followed up for 3-36 months, the portal vein tumor thrombus showed a significant shrinkage in all patients. The median survival time was about seven months. Conclusion For the treatment of hepatocellular carcinoma associated with portal vein tumor thrombus, endovascular implantation of 125I seeds under the dual-guidance of ultrasound and digital subtraction angiography is clinically safe and feasible. This treatment has satisfactory effect on the portal vein tumor thrombus.

Objective To evaluate the left ventricular (LV) systolic dyssynchrony after the acute myocardial infarction (AMI) with two-dimensional speckle tracking echocardiography (STE). Methods STE were performed in 65 patients within 72 h of AMI and compared with 60 age- and sex-matched healthy volunteers. The peak longitudinal strain (LS_(peak)) was measured at LV myocardium. LV dyssynchrony was defined as an interval ≥130 ms for the absolute difference in time to peak radial strain for the anteroseptal wall versus the posterior wall (TAS-POST). Size of myocardial infarction (MIS)was confirmed by wall-motion score index (WMSI). Results The LS_(peak) and LV ejection fraction (LVEF) were lower, and WMSI and TAS-POST were larger in AMI patients compared with controls. Forty-two patients had developed LV dyssynchrony (64.62%), and there were strong correlation between LV dyssynchrony (TAS-POST) and LS_(peak), LVEF, and WMSI (MIS). MIS was the most independent predictor for systolic dyssynchrony. Conclusion AMI with normal QRS can induce LV dyssynchrony, which is mainly determined by MIS. STE is a reliable technique for accurate evaluation of LV synchrony.

BACKGROUND:Vascular endothelial cel s participate in the coagulation cascade reaction or contraction of blood vessels by secreting abundant coagulating substances that promote coagulation. OBJECTIVE:To overview the effects of different coagulating substances secreted by vascular endothelial cel s, and provide theoretical basis for the screening of coagulant biomaterials. METHODS:A computer-based research in CNKI and PubMed databases was performed for relevant literatures addressing vascular endothelial cel s and its secreting coagulating substances published from 1988 to 2016 using the keywords of“vascular endothelial cel s, endothelin, Ang II, TXA2, tissue factor, col agen, fibronectin, von wilbrand factor, thrombospondin, platelet activating factor, plasminogen activator inhibitor, proaccelerin, antihemophlic factor”in English and Chinese, respectively. Final y 36 articles were enrol ed for result analysis. RESULTS AND CONCLUSION:Vascular endothelial cel s can secrete numerous coagulation factors that play important roles in the process of coagulation, inflammation reaction and thrombosis fol owing vascular injury. Among them, coagulation factor V and VIII are directly involved in the coagulation cascade reaction and promote thrombosis. In the meanwhile, the vasoconstrictors narrow the lumen, thereby assisting coagulation and promoting thrombosis indirectly. Subject headings:Endothelial Cel s;Blood Coagulation Factors;Endothelins;Tissue Engineering

AIM: To know the variations of the cytochrome b gene in cancer tissue, paracarinoma tissue and normal tissue and to inquire into the relationship between mutations of mitochondrial genome and carcinogenesis. METHODS: Cellular total DNA was extracted.The cytochrome b genes of three tissues were amplifyed with polymerase chain reaction(PCR). PCR products were analysed by DNA auto-sequencing method. RESULTS: The cytochrome b gene of cancer tissue had the C to G mutation at nt 14931, the C to G mutation at nt 15004 and the T to C mutation at nt15435,respectively. The cytochrome b gene of paracarinoma tissue had the A to C mutation at nt 15436. The cytochrome b gene of normal tissue had not mutation. CONCLUSION: Mitochondrial DNA mutations could be the endogenous factors that induce nuclear genome mutation. It could promoto carcinogenesis. The paracarinoma tissue was abnormal in DNA molecular level.