Objective To develop a double antibody sandwich ELISA for quantitatively detecting Japanese encephalitis virus(JEV) antigen.Methods The anti-JEV polyclonal antibodies were used to coat ELISA plates.Anti-JEV monoclonal antibodies were used as enzyme-labeled conjugate.A standard curve based on known amounts of JEP antigen was established by the ELISA.Various parameters of the assay were analyzed.Results The optimal linear range was 12.5～200 U/ml(r=0.9989).The quantitation limit was 12.5 U/ml.The recovery rate for the accuracy test was 85.0%～103.3%.The coefficients of variation for intra-assay and inter-assay precision were 4.3%and 5.5%respectively.No cross-reaction was observed with HAV vaccine,influenza vaccine,Vero cell Iysates,newborn bovine serum,or human albumin.Conclusions The data indicate that the ELISA developed in this study has high specificity,precision, accuracy,and stability.The assay should be suitable for quantitative determination of JEV antigen in various vaccine products.

Neovascular glaucoma ( NVG ) is a series of blinding and intractable eye diseases, which caused by various intraocular or extraocular diseases. The iris and angle neovascularization and vascular membrane fiber contraction may eventually lead to progressive elevation of intraocular pressure and angle closure. Because of complex etiology, the treatment of NVG is intractable and inefficient. Based on the articles published in recent years, we reviewed the progressions of the relevant cytokines and animal models.

AIM:To find an efficient and simple surgical procedure of the external dacryocystorhinostomy ( EXT- DCR) in the treatment of chronic dacryocystitis.
METHODS:A total of 270 cases were performed in this retrospective study. A comparison of clinical effects and hemorrhage complications between the experimental group, in which 189 eyes of 167 patients that underwent traditional EXT-DCR without packing, and the control group, in which 121 eyes of 103 patients that underwent traditional EXT-DCR with Vaseline gauze were performed. The postoperative follow-up ranged from 6 to 36mo ( the mean follow-up was 15±3. 6mo).
RESULTS: There were no significant differences in the curative rates between the two groups (97. 9% vs 97. 5%, P>0. 05). But the incidence rate of moderate or severe postoperative nasal bleeding was lower in the experimental group (15. 9%, 30 eyes) than the control group (31. 4%, 38 eyes) and P<0. 01.
CONLUSION: The traditional EXT - DCR without packingis an effective procedure and is more effective in reducing moderate or severe postoperative bleeding when the intraoperative anastomose and the postoperative drainage are well done and the intraoperative bleeding is well controlled.

Diagnosis, Differential ; Humans ; Intestinal Diseases ; etiology ; Intussusception ; etiology ; Pancreatitis ; complications ; diagnosis ; Purpura, Schoenlein-Henoch ; complications ; diagnosis

OBJECTIVE To survey hepatitis B virus(HBV) contamination on hands of laboratory staffs and to evaluate the protection efficacy against HBV infection by wearing gloves.METHODS Samples from used gloves and gloves-protected hands were carried out according to the methods stipulated in the Technical Guidelines for Disinfection.All samples were divided into 3 groups:gloves worn for 1h,gloves worn for 3h and gloves-protected hands,each group had 202 cases.To detect HBsAg and HBV DNA by microparticle enzyme immunoassay(MEIA) and fluorescence quantitative polymerase chain reaction(FQ-PCR),respectively.RESULTS HBsAg polluted rates of gloves worn for 1h,gloves worn for 3h and gloves-protected hands were 22.77%,34.65% and 2.48%,respectively;HBV DNA polluted rates of gloves worn for 1h,gloves worn for 3h and gloves-protected hands were 27.72%,41.58% and 2.48%,respectively.The HBsAg and HBV DNA polluted rates of gloves worn for 3h were higher than those of gloves worn for 1h,the difference was significant between them(P

Objective To investigate the effect of physical training combined with biofeedback therapy on pelvic floor dysfunction.Methods 35 patients with pelvic floor dysfunction and received physical training combine with biofeedback therapy were analyzed retrospectively.Results The outcome was well in 23 cases, very effective in 4 cases, effective in 3 cases, the total effective rate was 85.7%. Conclusion Physical training combine with biofeedback is an effective, simple, and painless procedure for pelvic floor dysfunction.

Objective To explore the dose-effect,time-effect and safety of alteplase in the treatment of acute cerebral infarction.Methods One hundred and ten patients with acute cerebral infarction were selected,among whom 50 patients whose time window ≤3.0 h were divided into group A and group B by random digits table method with 25 cases each,and 60 patients whose time window 3.1-4.5 h were divided into group C and group D by random digits table method with 30 cases each.The patients in group A and group C received alteplase 0.6 mg/kg (maximum dose 60 mg) intravenous thrombolysis;the patients in group B and group D received alteplase 0.9 mg/kg (maximum dose 90 mg) intravenous thrombolysis.The national institutes of health stroke scale (NIHSS) scores before treatment and 1 h,24 h,7 d,30 d and 90 d after treatment were observed in the 4 groups.The therapeutic effect,complication incidence and fatality rate were compared.The prognosis was estimated by modified Rankin scale (mRS) score 90 d after treatment.Results The NIHSS scores 1 h,24 h,7 d,30 d and 90 d after treatment were significantly lower than those before treatment in the 4 groups,and there were statistical differences (P ＜ 0.05).The NIHSS score decreased significantly with time.There were no statistical differences in NIHSS score between group A and group B,group C and group D.There were no statistical differences in complication incidence and fatality rate 90 d aftcr treatment in group A and group D compared with group B and group C (P＞ 0.05).The rate of eusemia in group A was 76.00％ (19/25),in group B was 64.00％ (16/25),in group C was 43.33％ (13/30),and in group D was 53.33％ (16/30).And there were no statistical differences between group A and group B (x2 =0.620,P ＞0.05),and between group C and group D (x2 =0.069,P＞ 0.05).Conclusions The low dose alteplase is also effective and safe to acute cerebral infarction patients at time window ≤ 3 h.It is also effective and safe to acute cerebral infarction patients at time window 3.0-4.5 h at standard dose.

Objective To observe the factors affecting inadequate ST-segment resolution in patients with acute ST-segment elevation myocardial infarction after emergency percutaneous coronary intervention (PCI). Methods The patients with acute ST-segment elevation myocardial infarction undergoing emergency PCI were enrolled for study. According to the ratio of ST-segment resolution, 186 cases were divided into inadequate ST-segment resolution group (54 cases) and relatively adequate ST-segment resolution (132 cases). Clinical data of two groups were compared. The single factor and multiple Logistic regression analysis were performed to determine the factors influencing inadequate ST-segment resolution. Results Pre-infarction angina was protective factor of inadequate ST-segment resolution after emergency PCI (OR=0.361, 95%CI 0.131-0.994, P<0.05). Anterior myocardial infarction, attack-to-balloon time, Killip classification and white blood cell counts were risk factors of inadequate ST-segment resolution (OR=2.389, 95%CI 1.194-4.781;OR=1.655, 95% CI 1.082-2.532; OR=1.319, 95% CI 1.026-1.695; OR=1.184, 95% CI 1.004-1.396, P<0.05). Conclusions Patients with pre-infarction angina could reduce the risk of inadequate ST-segment resolution after PCI. Patients with anterior myocardial infarction,long attack-to-balloon time, Killip classification≥2 and high blood cell counts could increase the risk of inadequate ST-segment resolution, and earlier and more active clinical intervention should be taken.

OBJECTIVE To study the imprinting status of H19 gene in normal villi tissue during the first trimester,and its relation to the invasion of trophoblast. METHODS Using PCR-RFLP methods to examine the imprinting status of H19 gene in 93 cases of normal villi tissue during the first trimester. RESULTS Among 93 cases, heterozygous genotypes were found in 42 cases. And 11 cases of biallelic expression were found among these 42 cases of heterozygous genotypes from 5 to 9 weeks, however no biallelic expression existed from 10 to 12 weeks. CONCLUSIONS During the first trimester, H19 is expressed biallelically at the first 10 weeks. The H19 gene may dynamicly change in the trophoblast, and the dynamic change may have close relationship with the invasion of the trophoblast.

The latest WHO classification of tumors is the most important standard for clinicpathologic diagnosis of pathologists in medical practice.We should study,grasp,and apply it to medical practice for need of patients and ourselves.