ObjectiveTo prepare the hepatitis E vaccine national potency reference for the quality control of hepatitis E vaccine.MethodsA batch of hepatitis E vaccine was selected as the row material,and the screened lyoprotectant was added. After aliquot and freeze-drying,it was prepared as candidate reference material,and the homogeneity and stability were investigated,which was distributed to four laboratories for collaborative calibration and applicability study.Results The 5% trehalose + 2% dextran was selected as the lyoprotectant to prepare the candidate reference material. The aliquot accuracy of candidate reference material was 0. 7%;The coefficient of variation(CV)of antigen content homogeneity was9. 0%;The CV of aluminum content homogeneity was 4. 0%. Moisture content was 1. 7%. The candidate reference material showed good acceleration stability and reconstituted stability. A total of 18 valid data were obtained from the collaborative calibration. The results showed that the average value of median effective dose(ED50)was 0. 15 μg(95% confidence interval of 0. 12 ～ 0. 18 μg)with the intra-laboratory CV of 30. 8% ～ 64. 2%,and the inter-laboratory CV of 32. 6%. Two hepatitis E vaccines produced by two laboratories themselves and the candidate reference material showed good dose-response relationship,of which the seroconversion rate decreased with the decrease of vaccine antigen content and the curve change trend was similar.ConclusionThe first Chinese national potency reference for hepatitis E vaccine(300031-201801)was prepared,which can be used for the quality control of potency ED50detection of hepatitis E vaccine.

AIM: To study the tilt of the intraocular lens (IOL) after Nd:YAG capsulotomy (YAG) and variation of the axial length (AL) in patients with posterior capsular opacification (PCO).METHODS: The study involved 18 eyes of 14 patients with PCO after uncomplicated phacoemulsification surgery and IOL implantation.All patients had taken examinations,including testing best corrected visual acuity (BCVA) by using standard logarithmic visual acuity chart,images of ocular anterior segment and AL by OCT.After the examinations,YAG was operated upon all patients.Each eye received one drop of Diclofenac Sodium Eye Drops immediately after YAG,and patients had taken examinations listed above again.One week later,BCVA and OCT were tested as well.Data (BCVA,tilt of IOLs,and AL) were recorded and analyzed statistically by SPSS.RESULTS: Mean patient age was 73.93±6.94y,including 5 males and 9 females,8 left eyes and 10 right eyes,altogether 14 patients with 18 eyes.In this study,tilt of IOLs was defined as the angle of anterior surface of IOL and pupil plane (briefly called Tilt,unit:°).Before YAG,mean Tilt was 2.896±2.286°,mean AL was 23.56±0.55mm.1h after YAG,mean Tilt was 4.702±2.991°,mean AL was 23.40±0.59mm,and BCVA enhanced 3.72±1.74 lines.1wk after YAG,9 patients with 12 eyes were involved in the study.The mean Tilt of these 12 eyes was 3.175±1.791° 1h after YAG and 3.434±1.835° 1wk after YAG.There were significant differences between Tilt before YAG and Tilt 1h after YAG.There were no significant differences between AL before YAG and AL 1h after YAG.There were no significant differences between Tilt 1h after YAG and Tilt 1wk after YAG.The lines of enhancement of BCVA 1h after YAG was correlated to differences between Tilt before YAG and Tilt 1h after YAG,of which the correlation coefficient was-0.523.CONCLUSION: IOLs of patients with PCO tilted after YAG,while AL rarely changed.After YAG,the less IOLs tilted,the more BCVA enhanced.

Fatty Liver ; Humans

Fatty Liver ; diagnosis ; epidemiology ; Prognosis

Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Fatty Liver ; drug therapy ; prevention & control ; Humans ; Phytotherapy

Alcoholism ; complications ; Antiviral Agents ; therapeutic use ; Fatty Liver ; diagnosis ; epidemiology ; etiology ; therapy ; Hepatitis, Viral, Human ; complications ; diagnosis ; drug therapy ; Humans ; Insulin Resistance ; Interferons ; therapeutic use ; Obesity ; complications ; Risk Factors

Objective To observe the effects of Er-YAG and surgical resection in the treatment of oral cav-ity mucous cyst. Methods A total of 63 patients with oral cavity mucous cyst ,selected in our hospital from March 2013 to May 2014,were divided into control group(n=31)and experimental group(n=32)based on dif-ferent therapies. The oral cavity mucous cysts in the experimental group and the control group were treated with Er-YAG and surgical resection ,respectively. The two groups were compared in terms of therapeutic effect. Results The cure rate in the two groups had no significant difference (P>0.05). The operation time in the experiment group was significantly shorter than the control group(P<0.05). In the experiment group,the incidence of intra-operative blood loss,postoperative edema and postoperative scarring were significantly lower than those of the con-trol group(P<0.05),but the two-year recurrence rate in the two groups had no significant difference(P>0.05). The SAS scores had no significant difference between the two groups at 1 week after operation (P > 0.05),but they were significantly higher in the experiment group than in the control group before operation and 3 days after op-eration(P < 0.05). In HAD emotional determination,the numbers of patients who had the manifestation of anxi-ety and depression in the experiment group were smaller than control group before operation and 3 days after opera-tion(P<0.05),but there was no significantly difference between the two groups at 1 week after operation(P >0.05). Conclusions The curative effect of Er-YAG in the treatment of oral mucous cysts is close to that by the conventional surgery,but the former is advantageous for easier operation,less postoperative complications and alle-viation of patientspsychology pressure,worthy of clinical spreading.

Objective:To investigate the effect of miR-26b on the invasion and migration of lung cancer cell and to explore its mechanism.Methods:qPCR was used to detect the expression of miR-26b in lung cancer.Luciferase reporter gene was used to detect interaction between miR-26b and hENT1.Transwell assay was used to detect invasion ability after treatment of miR-26b mimics.Scratch assay was used to detect migration ability after treatment of miR-26b mimics.The expressions of hENT1,ROCK-I and RhoA were detected by Western blot.The changes of cytoskeleton after miR-26b mimics treatment with phalloidin were observed.The effect of miR-26b mimics on the tumor size and volume of lung cancer was determined by subcutaneous tumor formation in nude mice.Results:MiR-26b expression was significantly reduced in lung cancer.With the progress of lung cancer,the expression of miR-26b was reduced.With the progress in differentiation of lung cancer,the expression of miR-26b was decreased.Decrease of miR-26b was associated with lung cancer lymph node metastasis.HENT1 was the direct target of miR-26b;miR-26b regulated the invasion and migration ability of human lung carcinoma A549 cells.MiR-26b regulated the expression of hENT1,ROCK-1 and RhoA.After the treatment with miR-26b mimics,the F-actin staining was significantly reduced,whereas the formation of wrinkles and the formation of pseudopodia were significantly reduced.Subcutaneous tumor formation in nude mice showed that miR-26b mimics treatment significantly reduced the tumor size and mass.Conclusion:MiR-26b plays a role in tumor suppression in lung cancer.miR-26b can regulate the invasion and migration ability of lung carcinoma A549 cells by targeting hENT1 depending on the RhoA/ROCK-1 pathway.

Gastrointestinal Tract ; microbiology ; Humans ; Metagenome ; Microbiota ; Non-alcoholic Fatty Liver Disease ; microbiology

China ; epidemiology ; Humans ; Pneumoconiosis ; epidemiology ; prevention & control ; Population Surveillance