ObjectiveTo study the effect of lentivirus-mediated microRNA-21 RNAi on biological behaviors in human hepatic cancer cells.MethodsMicroRNA-21 specific siRNA gene was synthesized and cloned into the recombinant lentiviral vector,pGCSIL-GFP.HepG2 cells were infected by microRNA-21 siRNA recombinant lentivirus (miR-21-siRNA-Ⅳ).The HepG2 cells were devided into SI group,NC group and N group in vitro.The expression of the targets of miR-21 was detected by RT-PCR.Cell growth was analyzed by MTT assay.The invasion was dectected by tmnswell method.Apoptosis was detected by Hoechst33258.BALB/c nude mice were randomly divided into SI group and NC group.The growth of transplant tumors in BALB/c nude mice were observed.Results ( 1 ) The expression level of miR-21 was inhibited significantly by miR-21-siRNA-lⅣ.(2) The proliferation of HepG2 was also markedly suppressed in MTT at the 96 h point ( P =0.0031,P ＜ 0.05 ).(3) The number of cells that migrated through the chamber of SI group decreased ( P =0.0004,P ＜ 0.05 ).(4) The cell apopotosis in SI group increased markedly.In addition,the caspase 3 mRNA significantly increased ( P =0.0002,P ＜ 0.05 ).( 5 ) Tumor growth curve was not statistically different between groups ( P =0.0002,P ＜ 0.05 ).ConclusionsMicroRNA-21 specific siRNA suppresses the proliferation and migration of HepG2 cells and induces tumor cell apoptosis inhibiting the growth of transplanted tumor in Balb/c nude mice.

Objective To explore the safety,technical feasibility,and catheter-related complications of ultrasound-guided implantation of totally implantable access port (TIAP) in the upper arm.Methods A total of 642 patients,who were admitted to authors' hospital during the period from February 2014 to December 2016 to receive ultrasound-guided implantation of TIAP in the upper arm,were enrolled in this study.The patients included 407 males (63.4％) and 235 females (36.6％),their age ranged from 11 to 89 years old,with a mean age of (58.29±4.33) years old.Under ultrasound guidance,by using Seldinger's technique TIAP was implanted in the upper arm.Results Implantation of TIAP in the upper arm was performed in all 642 patients.The initial success rate of implantation was 99.53％ (639/642),in 3 patients successful implantation was obtained in the second time of implantation as the initial puncturing failed.During the follow-up of 155,302 catheter days,complications occurred in a total of 58 patients (9.0％),including early complications in 9 patients and late complications in 49 patients.The complications included TIAP-related infection (n=28,4.4％),venous thrombosis (n=7,1.1％),sac bleeding (n=3,0.4％),port hub rotation (n=3,0.4％),cracked skin (n=l,0.2％),catheter obstruction (n=2,0.3％),catheter displacement (n=4,0.6％),movement restriction of catheter-side upper limb (n=7,1.1％),venous return obstruction of upper limb (n=2,0.3％) and median nerve injury (n=l,0.2％).No port-related death occurred.Conclusion The ultrasoundguided implantation of TIAP in the upper arm is technically-safe,clinically-effective and minimally-invasive,besides,it carries lower incidence of complications.Therefore,this method is worthy of clinical popularization and application.

Objective To investigate the prevalence and related factors of diabetic retinopathy (DR) among residents with type 2 diabetes mellitus (T2DM) in Culai Town of Tai'an City in Shandong Province.Methods According to the DM management file database for community,785 patients with T2DM were randomly selected by cluster sampling method.The questionnaires,routine general examinations,visual and fundus-free fluoroscopy were performed on all the patients.DR diagnosis and classification was according to the guidelines for clinical diagnosis and treatment of DR in China (2014).Both monocular and binocular DR were selected as DR patients,and the worse eye for binocular DR were treated as the DR classification of the patient.The patients were grouped by presence or absence of DR.GraphPad Prism 6,SigmaPlot 12.5,SPSS 20.0 and Excel were used to achieve data analysis.Also,SPSS 20.0 was used for multi-factor logistic regression analysis.Results A total of 699 patients (89.04％) were actually recorded.There were 122 eyes of 63 patients (9.01％) with DR (DR group),1272 eyes of 636 patients (90.99％) without DR (NDR group).Among the 122 eyes of DR,there were 19 (15.57％),17 (13.93％),70 (57.38％),10 (8.20％),6 (4.92％) eyes in stage Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ,respectively.The differences of mean age (t=15 290,P=0.002),DM duration (t=9075,P＜ 0.000) and diastolic blood pressure (t=15 810,P=0.006) between the two groups were statistically significant.There were 23 (36.51％) and 394 (61.95％) patients with hypertension history in the DR group and the NDR group,with the significant difference (Z2=15.42,OR=0.35,95％CI 0.21-0.60).There were 57 (90.48％) and 500 (78.62％) patients with fasting blood glucose larger than 6.11 mmol/L in the DR group and the NDR group,with the significant difference (OR=2.51,95％CI 1.06-5.95,P=0.031).Logistic regression analysis showed that the age,fasting blood glucose and DM duration were influencing factors for DR (OR=1.039,0.864,0.898;P=0.021,＜0.000,＜0.000).Conclusion The prevalence of DR in patients with T2DM in Culai Town of Tai'an City is 9.01％.Age,DM duration,fasting blood glucose are associated to DR.Those with a history of hypertension may have a lower risk of DR than those without a history of hypertension.

Objective: To reveal the genetic characteristics of erythrocyte membrane protein in hereditary spherocytosis (HS) in China. Methods: Next-generation sequencing technology was used to detect mutations in genes of erythrocyte membrane proteins in 51 clinically diagnosed HS patients. The relationship between gene mutations and clinical phenotypes was analyzed. Results: Mutations in erythrocyte membrane protein genes were detected in 37 patients, including 17 with ANK1 mutations (17/37, 45.9%), 14 with SPTB mutations (14/37, 37.8%), and 5 with SLC4A1 mutations (5/37, 13.5%). One patient carried both heterozygous ANK1 mutation and SPTB mutation (1/37, 2.7%). SPTA1 and EPB42 mutation was not fou nd in any patient. Nonsense mutations (36.8%) and missense mutations (31.6%) were most common. Of the 38 mutations detected, 34 were novel mutations and have not been reported elsewhere (89.5%). Sixteen HS patients underwent parental genetic validation, 6 patients (37.5%) inherited gene mutation from parents and 10 (62.5%) were de novo. The peripheral blood cell parameters of HS patients were not related to the mutant genes and gene mutation types. However, it seems that HS patients with mild clinical status are prone to carry SPTB mutations while more patients with severe clinical status have ANK1 mutations. Conclusions ANK1 and SPTB are the most common mutant genes in Chinese HS patients, mainly with missense mutations and nonsense mutations. There was no significant correlation between the mutation of HS related genes and the severity of HS.

Objective To investigate the incidence of venous thrombosis related to totally implantable access port (TIAP) in upper arm in cancer patients, and to discuss its risk factors. Methods The clinical data of a total of 1 724 patients, who received upper arm TIAP for deliverance of chemotherapy at authors' hospital during the period from February 2014 to April 2018, were collected. The general data of patients, catheterization, disease progression and incidence of venous thrombosis in upper limbs were analyzed. The univariate analysis and multivariate logistic regression analysis were used to determine the risk factors related to symptomatic thrombus. Results A total of 17 patients developed symptomatic venous thrombosis of the upper extremities, the incidence rate was 0.99％ (17/1 724) . The mean time interval from the implantation of upper arm TIAP to the diagnosis of thrombosis was 55.6 d (2-334 d) . Univariate analysis indicated that infection (P<0.01) and spontaneous catheter dislodgment (P<0.01) were significantly related to the risk of upper extremity venous thrombus (UEVT) . Multivariate binary logistic regression analysis revealed that infection (RR =16.85, P <0.01) and catheter spontaneous dislodgment (RR =101.09, P <0.01) were two important independent predictors for UVTE related to upper arm TIAP. Conclusion Infection and spontaneous catheter dislodgment are independent risk factors for upper arm TIAP-related thrombosis.

Humans ; Consensus ; Pancreatic Neoplasms/therapy* ; Neuroendocrine Tumors/therapy*