ObjectiveTo discuss the clinical significance of han nationality and kazak hepatitis B virus large surface protein detection.MethodsEnzyme linked immunosorbent assay(ELISA) method was used to examine the HBV-LP、HBV markers and quantitative real-time PCR methods were used to detect the HBV DNA in 270 patients with Hepatitis B.ResultsAmong the 270 cases,there was no significant difference between the levels of HBV DNA and HBV-LP( P ＞ 0.05 )in HBe Ag-positive patients,which was not affected by nationality.Significant difference of positive rate was observed between HBV-LP and HBV DNA( P ＜0.05) in HBe Ag-negative ones,which was not affected by nationality.HBV-Lp expression was significantly correlated with the logarithm of HBV DNA level ( r =0.986,P ＜ 0.05).ConclusionThere was higher coincidence rate between the levels of HBV-LP and HBV DNA in HBeAg--positive patients.The positive rate of HBV-LP was higher than that of HBV DNA in HBe Ag-negative patients.HBV-LP could serve as a reliable marker in the reflection of HBV the replication at protein level,and it was valuable to monitor HBV replication and prognosis of the disease,especially in HBe Ag-negative HBV infected patients.

Diclofenac potassium delayed-sustained release pellets were prepared by double-layer coating method with ethylcellulose aqueous dispersion.The effects of release condition and pellet compositions on the in vitro drug release were evaluated.The formulation was optimized by the central composite design-response surface methodology.It was shown that the pH of the media greatly affected the in vitro drug release of the pellets while the viscosity of the media had little influence.Drug release from the pellets was related to the proportion of the inner coat to the outer coat and the amount of pore forming agent in the outer coat.The optimization of the formulation could be achieved by the central composite design-response surface methodology.

Objectives: To study and prepare monoclonal antibody against glycophorin A of human erythrocyte(GPA McAb).This antibody is a key reagent in preparation of bispecific antibodies for rapid whole-blood immunoassay.　Methods: BALB/c mice received GPA antigen injection. Hybridoma was produced by traditional techniques. Hybridoma was determined with ELISA and indirect agglutination(IA) method.　Results: All 3 GPA McAb reacted with GPA, and they did not autoagglutenate with four types of red cells(type A,B,O,AB).Of the 3 McAb-GPA, two antibodies were IgG1,one IgG2 subtypes. Two IgG1 McAb-GPA can be used in making bispecific antibody in preparation of rapid whole-blood immunoassay.　Conclusions: Immunogenity of GPA was enhanced after coupling with the native serum albumin of the immunized animal, and high titer GPA McAb could be easily obtained. This result is important in making bispecific antibodies in preparation of rapid whole-blood immunoassay.

Paraffin Embedding ; methods ; Tissue Array Analysis ; instrumentation ; methods

A complete aniline dioxygenase gene cluster cloned from an Acinetobacter sp. strain, which could utilize aniline as the sole carbon, nitrogen and energy, was sequenced. Sequence analysis showed that the gene cluster had six intact ORFs, and the whole sequence had high similarity with that of Acinetobacter sp. YAA at amino acid level. A recombinant strain was formed with the gene cluster ligated to vector pLAFR6 and transferred to E.coli. After optimizing the fermentation conditions of this strain for producing catechol, LB was confirmed as the final medium, pH7.0, aniline concentration 0.5mg/ml, E.coli DH5?as the host, incubation temperature 37℃, amount of inoculum 3%. Under above conditions, the yield of catechol could get to 0.546mg/ml, and the converting rate of substrate at molecule level could get to 92.4%.

OBJECTIVETo investigate the risk factors of pinhole infection in the fractured lower limbs after external fixation.

METHODSThe case-control study was designed. From May 2009 to May 2014, the clinical data of 272 patients with lower limb fracture treated by external fixation device were collected. All the patients were divided into two groups according to post-operative pinhole infection. There were 29 cases in the case group including 23 males and 6 females. The age of patients in case group ranged from 25 to 77 years old,with the average age of (53.41 ± 12.77) years old. There were 243 cases in control group including 217 males and 26 females. The age of patients in the control group ranged from 27 to 78 years old, with the average age of (48.71 ± 11.87) years old. There were nine risk factors observed in our study including age, gender, fixed time by external fixation device, diabetes, time in bed, smoking, operation condition of other parts in the body, infection condition of other parts in the body.

RESULTSThe results of univariate analysis showed that there were statistically significant differences among age (χ² = 15.708, P < 0.001), fixed time by external fixation device (χ² = 11.940, P < 0.001), severity of the lower limb fracture (χ² =15.438, P < 0.001), diabetes (χ² = 8.519, P = 0.004) and time in bed (χ² = 7.165, P = 0.007) between case group and control group. The results of Logistic regression analysis showed that the risk factors of pinhole infection after fixed by external fixation device in the lower limb fracture were the advanced age (OR = 8.327, P < 0.001), fixed time by external fixation device (OR = 6.795, P < 0.001), diabetes (OR = 4.965, P = 0.001) and time in bed (OR = 4.864, P = 0.008).

CONCLUSIONThe advanced age, long fixed time, diabetes and long time in bed could increase the risk of pinhole infection after external fixation in the lower limbs with fracture.

Adult ; Aged ; Case-Control Studies ; External Fixators ; adverse effects ; Female ; Humans ; Lower Extremity ; injuries ; Male ; Middle Aged ; Postoperative Complications ; etiology ; Risk Factors

Objective To study the feasibility and curative effect of laparoscopic radical resection of rectal carcinoma. Methods Sixty-two cases were enrolled in this study between Feb 2003 and Mar 2005, including 32 cases undergoing laparoscopic radical resection (19 Dixon and 13 Miles) , and 30 cases undergoing open radical resection (22 Dixons and 8 Miles). Results The mean operation time of laparoscopic group was 195 min, and open group was 156 min (P 0. 05 ). The GI and urination function of laparoscopic group recovered faster than open group ( evacuated was 2. 7 days vs. 3. 7 days, P

BACKGROUND:Posterior lamina resection often causes loss of spinal stability, so screw rod internal fixation technology is needed to maintain the stability of lumbar spine. Finite element analysis can be used to simulate the stress distribution of the spine and internal fixation system after spinal surgery. OBJECTIVE: To build three-dimensional finite element model of spinal L1 to L3, analyze the spinal stability and stress distribution after the total laminectomy and insertion of bilateral pedicle screw using finite element method. METHODS: L1-L3 CT data could be colected from an adult healthy male volunteer. Mimics14.01, 3-matic(V6.0) and Ansys 15.0 could be used to set up the intact lumbar spine finite element model of L1-L3 (group A), the L1-L3 finite element model after L2 total laminectomy (group B), and the finite element model of L2 total laminectomy and insertion of bilateral pedicle screw (group C). We used software to simulate flexion, extension, lateral bending and axial rotation, and three kinds of models received finite element analysis. RESULTS AND CONCLUSION: (1) Based on the maximum of Von Mises under different motion states, the maximum stress was significantly lower in group A than in group B (P< 0.05). The maximum stress was significantly lower in group B than in group C (P < 0.05). (2) Based on the total deformation under different motion states, the total deformation was significantly lower in group A than in group B (P < 0.05). The total deformation was significantly lower in group C than in groups A and B (P < 0.05). (3) After the total laminectomy, vertebral body stress increased, especialy in the lamina, pedicle and joints. The range of motion of the vertebral body increased, which influenced the stability of the vertebral body. Internal fixation could decrease range of motion. Stress concentrated on the screw. Stress on the vertebral plate and pedicle decreased. The stability of vertebral body increased. Excessive stress concentrated on screw system wil increase the risk of screw breakage.

Purpose To investigate the relationship between Epstein-Barr virus (EBV) and lymphoepithelioma-like carcinoma (LELC) of the parotid gland and detect the gene expression products of EBV harbouring in LELC cells. Methods Thirty-two parotid LELCs were collected from the Departments of Pathology, Sun Yat-sen University of Medical Sciences, Guangzhou, China during the period of January 1986 and December 1995. All the 32 formalin-fixed paraffin-embedded blocks had been consecutively re-sectioned again. Immunohistochemical and in situ nucleic acid hybridization methods for detection of EBV gene encoded products were performed. Results (1) 32 LELCs were found out of 125 parotid gland carcinomas, the frequency was 25.6% (32/125). (2) All of the 32 specimens contained a variable number of EBNA-1 and EBERs positive neoplastic cells. (3) Twenty-seven out of 32 specimens (27/32, 84.4%) had a portion of carcinoma cells expressing LMP-1. (4) No ZEBRA positive cell could be found. (5) EA-D, VCA and MA positivity rates for these 32 parotid LELCs reached to 71.9%(23/32), 68.8%(22/32), and 12.5%(4/32), respectively. Conclusions (1) The parotid gland LELC is frequently to be seen in Guangzhou locale of China, where is a high-incidence area of nasopharyngeal carcinoma (NPC). The parotid gland LELC and NPC are co-prevalent in Guangzhou locale. (2) This disease is also consistently associated with EBV infection. (3) The EBV infection of the parotid gland LELCs is essentially the type of latency Ⅱ, expressing EBNA-1, EBERs and LMP-1. (4) The latent infected EBV harbouring in LELC cells could in part be switched over to lytic cycle, producing EA-D, VCA or/and MA.

ObjectiveTo evaluate magnesium sulfate and compound polyethylene glycol electrolyte in bowel preparation before capsule endoscopy.MethodsA total of 81 patients were randomly divided into two groups.Group A (n =41 ) received compound polyethylene glycol electrolyte,and group B (n =40) received magnesium sulfate combined with compound polyethylene glycol electrolyte. Positive detection rate,intestinal preparation score,the incidence of capsule retention and solution quality,liver and kidney function were compared between those two groups.ResultsThe positive detection rates of capsule endoscopy were 65.9％ (27/41) in group A and 62.5％ (25/40) in group B,which were nonsignificantly different (x2 =0.099,P ＞ 0.05).The intestinal preparation scores of 19 patients in group A were ≤4 and those of 22 patients were ≥6,while those of 28 patients in group B were ≤4 and of 12 patients were ≥6,which were significantly different (x2 =4.653,P ＜ 0.05). The rates of capsule retention of group A and B were 2.4％( 1/41 ) and 5.0％ (2/40) respectively,which were not significantly different (x2 =0.372,P ＞ 0.05 ).Obvious abdominal pain,nausea or vomitting occurred in no patients of the two groups.There was no difference in electrolyte level or liver and kidney function between those two groups (P ＞ 0.05 ).ConclusionMagnesium sulfate combined with compound polyethylene glycol electrolyte is applicable for the bowel preparation before capsule endoscopy.