Objective To investigate the effect of signal transducers and activators of transcription 3(STAT-3)on sen-sitizing oral squamous cell carcinoma to cis-dichlorodiamineplatinum via downregulating miRNA-21. Methods Tscca and Tca8113P160 human tongue squamous cell carcinoma cell lines were employed in this study. WP1066 was used to suppress STAT-3 signaling pathway. Cells were divided into three groups:dimethyl sulphoxide (DMSO) group, cis-dichlorodiamine-platinum (DDP) group and WP1066+DDP group. Transcription level of miR-21 was assessed by real-time PCR, while the expression levels of STAT-3, p-STAT-3, tissue inhibitor of metalloproteinase-3 (TIMP-3) and matrix metalloproteinase-2/9 (MMP-2/9 ) were evaluated by Western blot assay. Matrigel matrix and transwell assay were used to determine cancer cell colony formation and invasive ability respectively. Expression level of miR-21 was examined by luciferase reporter gene as-say. Results Expression levels of STAT-3, pSTAT-3 and miR-21 were significantly suppressed by WP1066 treatment. The diameters of culture colony in cells treated with WP1066 and DDP were smaller than those in control group. The number of tongue cancer cells that migrated through the transwell membrane in WP1066 and DDP treated group was less than that in control group. Additionally, MMP-2/9 expression decreased while TIMP-3 increased dramatically in both cell lines in WP1066+DPP group compared to the other two groups. Conclusion Reduction of STAT-3 can sensitize oral squamous cell carcinoma to cis-dichlorodiamineplatinum via downregulating miR-21. Our study shows that DDP, in combination with WP1066, might be used as a potential target in the treatment of human oral squamous cell cancer.

Objective To detect the microsatellite instability (MSI) of D9S166,D9S171,D9S941, D9S942 and IFNA located at chromosome 9p21 in gastric carcinoma with high-grade intraepithelial neoplasia and normal tissue,and investigate the correlation of p14,p15,p16 gene and the gastric carcinogenesis. Methods 55 cases of gastric carcinoma with high-grade intraepithelial neoplasia and normal tissue were se- lected to detect MSI by microdissection,polymerase chain reaction,denaturing polyaerylamide gel elec- trophoresis and silver nitrate staining technology of five microsatellite markers on 9p21.Results In the infor- mative cases,total ratio of MSI in gastric carcinoma was 27 % (64/233) and it was 18% (42/233) in high- grade intraepithelial neoplasia.The ratio of MSI was significantly higher in gastric carcinoma than that in high-grade intraepithelial neoplasia (P

OBJECTIVE To discuss the preventive methods of hepatitis B virus reinfection after liver transplantation. METHODS Eighty eight liver transplantation recipients with HBV-related end-stage liver diseases including chronic fulminant hepatitis B,end-stage liver cirrhosis and liver carcinoma were analyzed retrospectively,and were given lamivudine pre-transplantation to prevent hepatitis B virus reinfection.Post-transplantation medicines of lamivudine were administered in 3 cases;lamivudine and hepatitis B immunoglobulin(HBIg) in 85 cases.The follow-up criteria included serum HBV,HBV-DNA,liver biopsy,immunohistochemical study of liver biopsy specimens and clinical manifestations.All of patients were followed-up 6 months at least.RESULTS Two of the three cases who taken lamivudine developed reinfection,the little time is 6 months following liver transplantation.There were three of eighty five cases taken lamicudine and HBIg(small dosage) developed reinfection.CONCLUSIONS Liver transplantation is an effective treatment for HBV-related end-stage liver diseases.Given lamivudine at the pre-transplantation could reduce the levels of the HBV virus copies.Lamivudine and HBIg post-transplantation offer effective prevention against hepatitis B virus reinfection.

Objective To compare the diagnostic value of DSA with that of Gd-EOB-DTPA-enhanced MRI for postoperative recurrent tiny hepatocellular carcinoma (HCC) lesions.Methods The clinical data of a total of 38 patients,who were admitted to authors' hospital during the period from September 2011 to March 2016 as clinically they were suspected to have postoperative recurrent tiny HCC lesions,were retrospectively analyzed.DSA,DSA plus lipiodol CT scan and Gd-EOB-DTPA-enhanced MRI were performed in all patients.The positive and negative diagnosis rates were compared among different examination methods,the diagnostic sensitivity and specificity were calculated.The imaging diagnosis of each patient was made by two associationchief radiologists independently,both the pathological findings from surgery or puncture biopsy and the 6-month follow-up results were taken as the final diagnosis basis.Results A total of 47 lesions were detected in the 38 patients.The diameter of the lesions was 0.5-2.0 cm,with an average of (1.2+0.8) cm.Of the 47 lesions,41 were proved to be recurrent tiny HCC lesions.Among the 41 lesions,22 had pathological evidence,and the remaining 19 lesions were confirmed through clinical follow-up.Six lesions were non-HCC focus,which were proved by clinical follow-up.For all lesions,the diagnostic sensitivity and specificity were 72.2％ and 80.0％ respectively by conventional DSA,which were 90.2％ and 100％ respectively by DSA plus lipiodol CT scan,and were 95.1％ and 100％ respectively by Gd-EOB-DTPA-enhanced MRI.Statistical analysis indicated that significant differences in diagnostic sensitivity and specificity existed between conventional DSA and DSA plus lipiodol CT scan as well as between conventional DSA and Gd-EOB-DTPA-enhanced MRI (P＜0.05),while the differences in diagnostic sensitivity and specificity between DSA plus lipiodol CT scan and Gd-EOB-DTPA-enhanced MRI were not statistically significant (P＞0.05).Conclusion For the detection of postoperative recurrent tiny HCC lesions,DSA plus lipiodol CT scan has quite the same diagnostic value as Gd-EOB-DTPA-enhanced MRI does.For patients who are not suitable to receive MRI examination,the use of DSA plus lipiodol CT scan,as an alternative means of inspection,should be taken into consideration.

Objective To evaluate the application value of real-time three-dimensional transesophageal echocardiography (RT-3DTEE) for the risk assessment of unusual atrial septal defect (ASD) in clinic therapy.Methods Accurate assessment before operation was conducted in 57 cases of patients with unusual ASD by two-dimensional transthoracic echocardiography (2DTTE),two-dimensional transesophageal echocardiography (2DTEE) and RT-3DTEE.The ultrasound manifestations were observed.And the guidance in clinic therapy were compared.Results The shape and number can be displayed clearly by 2D-TTE and 2D-TEE in 46 of 57 eases.Another 11 cases were diagnosed as irregular or two holes possibly.RT-3DTEE can help to observe the morphology and quantity of ASD visually and comprehensively in all cases.There was no statistical difference among 2DTTE,2DTEE and RT-3DTEE for the measurement of right atrium end-systolic transverse diameter (RATD),left atrium end-systolic transverse diameter (LATD),right ventricular end-diastolic diameter (RVDD) and left ventricular end-diastolic diameter (LVDD;all P＞0.05).The statistic difference for the diameter of atrial septal defect (ASDD) was found between 2D-TEE and 2D-TTE (P＜0.05) and RT-3DTEE and 2D-TTE (P＜0.05).There was no statistical difference among 2D-TEE,2DTTE and RT-3DTEE for the measurement of residual boundary condition of superior vena cava,aorta side and the top side of the atrium (all P＞0.05),whereas significant difference was found in measuring the residual boundary condition of inferior vena cava (F=50.39,P＜0.001).There were statistic differences between 2DTEE and 2DTTE,RT-3DTEE and 2DTTE,RT-3DTEE and 2DTEE (all P＜0.05).The clinic therapy can be directed by RT-3DTEE in all 57 cases.The diagnosis of 5 cases was failed by 2D-TTE,and 2 cases was failed by 2D-TEE.Conclusion Abundant image information can be offered by RT-3DTEE which plays an important role in the risk assessment of unusual atrial septal defect.

OBJECTIVETo investigate the relationship between the resistance index (RI) of the renal artery and serum creatinine (Cr) level in patients early (within one month) after renal transplantation.

METHODSA total of 123 patients receiving renal transplantation underwent examinations by color Doppler ultrasound for measurement of the RI of the renal artery within one month after the operation. According to the results of RI measurement, the patients were divided into RI≥0.75 and RI<0.75 groups for analyzing the correlation between RI and serum Cr level measured at the same time points.

RESULTSThe RI and Cr levels in patients with RI≥0.75 showed a significant positive correlation (P<0.05), whereas they showed an inverse correlation in patients with RI<0.75 (P<0.05). The patients with RI≥0.75 had significantly lower RI of the renal artery and Cr level than those with RI≥0.75.

CONCLUSIONRI is significantly correlated to Cr, and may serve as an indicator for predicting renal graft function after transplantation.

Adolescent ; Adult ; Aged ; Creatinine ; blood ; Female ; Humans ; Kidney Transplantation ; Male ; Middle Aged ; Postoperative Period ; Renal Artery ; diagnostic imaging ; physiopathology ; Ultrasonography, Doppler ; Vascular Resistance ; Young Adult

AIM:To investigate the value of 3D-optical coherence tomography (OCT) in the diagnosis of macular disease before phacoemulsification.METHODS:Clinical records of 423 cataract patients (512 eyes) who underwent phacoemulsification combined with intraocular lens implantation in our hospital from June to December in 2015 were retrospectively analyzed.In addition to preoperative routine examination of fundus, Topcon 3D-OCT 2000 was used to examine the macula, the detection rate of macular disease was compared, risk factors of cataract combined with macular disease were analyzed.RESULTS:The OCT image results of 305 cases (384 eyes, 72.1%) were successfully obtained, 133 cases showed macular disease (146 eyes), the detection rate was 28.5% (95%CI:27.64%-29.40%);the macular disease of 35 cases (37 eyes) were detected by routine examination of fundus before operation, the detection rate was 7.2% (95%CI:6.72%-7.74%);the detection rate of 3D-OCT was significantly higher than routine examination of fundus for macular disease (χ2=79.05, P<0.01).Female, over 65 years old, surgical history of diseased eye, and high myopia were risk factors of cataract combined with macular disease, the relative risk was 1.705 (95%CI:1.091,2.664), 1.893 (95%CI:1.219,2.939), 6.593 (95%CI:2.027,21.447) and 95%CI:5.130 (2.841,9.263) respectively, the risk of cataract combined with macular disease showed an increasing trend with rising age.CONCLUSION:In preoperative examination of cataract patients, 3D-OCT has higher sensitivity in the detection of macular disease, especially for women, over 65 years old, high myopia and surgical history of diseased eye, 3D-OCT can be used as a routine preoperative examination.

OBJECTIVETo study the preventing effects of procyanidins (PC) on selenite cataract in rats and the time-effect relationship.

METHODForty five SD rats were divided into three groups: control, model and experiment groups. The rats in the experiment group were fed additionally with the PC by 80 mg x kg(-1) when they were supplied the equal selenite with the model group. Five rats of each group were regularly sacrificed by bleeding from femoral artery at sixth, eleventh, sixteenth day and the level of malondialdehyde (MDA), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) of all lenses was measured.

RESULTCompared with the model group, the level of the MDA in the experiment group at the eleventh day and the sixteenth day greatly decreased (P < 0.01). At the sixteenth day the level of the SOD and GSH-Px had an increase (P < 0.01), which showed its anti-oxygenation.

CONCLUSIONPC indicated the obvious inhibition in the development of the rat cataract. The treatment period was recommended at least for fifteen days.

Animals ; Cataract ; chemically induced ; prevention & control ; Female ; Glutathione Peroxidase ; metabolism ; Male ; Malondialdehyde ; metabolism ; Proanthocyanidins ; therapeutic use ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Sodium Selenite ; pharmacology ; Superoxide Dismutase ; metabolism

BACKGROUND:Among many transplanted cells,adult autologous bone barrow-derived mononuclear cells have beenused in clinical practice because they are easy to be obtained,without immunological rejection and ethical disputationand other advantages.How to distinguish donor cells from receptors and observe the survival of donor cells following stem cell transplantation still trouble people.OBJECTIVE: superparamagnetic iron oxide (SPIO)particles-labeled bone marrow-derived mononuclear cells from minipigs were used to observe the feasibility of in vivo tracking with magnetic resonance imaging(MRI).DESIGN:A controlled observation experiment.SETTING:Institute of Cardiovascular Disease,Zhongda Hospital Affiliated to Southeast University.MATERIALS:This experiment was carried out in the Institute of Cardiovascular Disease,Zhongda Hospital Affiliated to Southeast University between April 2006 and August 2006.Healthy Chinese minipigs,aged 3 to 4 months,weighing from 20 to 30 kg,were provided by the Experimental Animal Center of Southeast University[SYXK(Su)2002-0012].METHODS: Autologous bone marrow-derived mononuclear cells of minipigs were isolated and cultured. Bone marrow-derived mononuclear cells in the suspension were traced with SPIO particles.Ferrum in the cells were shown by Prussian blue staining, and cell viability was evaluated by trypan blue exclusion method. Eleven minipigs used for preparation of model of myocardial infarction were divided into experimental group(n=9)and control group(n=2).By means of percutaneous left or right cervical artery or femoral artery puncturation, 1.5 to 2.0 mm balloon was used to occlude 1/3 left anterior descending branch,304 to 405 kPa,60 minutes later,ischemic preconditioning was conducted 3 tO 4 times before operation. When pig models of myocardial infarction were successful that was proved by surface electrocardiogram,bone marrow-derived mononuclear cells were percutaneously injected into coronary artery.Coronary arteriography was performed through femoral artery acupuncture at 24 hours after establishing infarction models.Suspension of bone marrow-derived mononuclear cells was perfused into coronary artery with OTW catheter.Then,the injector and OTW catheter for containing cells were rinsed with normal saline containing heparin and infused with the residual cells within 10 minutes.Non-labeled cells were perfused in 2 minipigs of control group by the same method.Postoperatively, bone marrow-derived mononuclear cells were traced by magnetic resonance and compared with Prussian blue-stained myocardial tissue sections.RESULTS: Seven minipigs of experimental group and one minipig of control group were Involved in the final analysis.One of each group was used for preparation of model of myocardial Infarction.One minipig of experimental group died from anesthetic accident before magnetic resonance.①Bone marrow-derived mononuclear cells all were nearly labeled by SPIO particles. Bone marrow-derived mononuclear cells could further proliferate in culture medium containing Fe2O3-PLL without obvious changes of cellular shape. ②T2+WI showed that 5 of 8 models of myocardial infarction presented fuzzy low-echo signal region in peripheral myocardial infarction after transplantation of labeled cells and the low-echo signal disappeared 4 weeks Iater. Ex vivo T2+WI sequence showed there was a dot-distributed low-echo signal region in the peripheral infarction region.③It was found in histological examination that 5 models(cell number over 106) had Prussian blue-positive cells,which distributed the same as those in magnetic resonance signal reducing region.CONCLUSION:SPIO particles-labeled bone marrow-derived mononuclear cells are safe and effective;T2+ WI is sensitive to tracing SPIO particles-labeled bone marrow-derived mononuclear cells;Magnetic resonance can in vivo trace SPIO particles-labeled stem cells transplanted through coronary artery,magnetic resonance signal change is related with the number of stem cells and division growth.

OBJECTIVETo establish a chiral separation method for determination of fluvastatin enantiomer with in vitro cellular model.

METHODSThe determination was performed on Chiralpak AD column (4.6 mm × 250 mm); and the phase consisted of hexane-isopropanol-trifluoroacetic acid (90:10:0.1) at a flow rate of 0.5 ml/min with UV detection of 239 nm.

RESULTThe standard curve was linear over the concentration range of 20 μmol/L-300 μmol/L (r² = 0.9993, r² = 0.9997). The recovery for this assay was (99.4 ± 0.8)%, precision for inter-assay and intra-assay was <10 %.

CONCLUSIONThe normal-phase HPLC chiral separation method was accurate and suitable for study on the stereoselectivity of fluvastatin with in vitro cellular model.

Cells, Cultured ; Chromatography, High Pressure Liquid ; methods ; Fatty Acids, Monounsaturated ; isolation & purification ; Indoles ; isolation & purification ; Stereoisomerism