Objective: To compare the advantages and disadvantages of three staining methods of HBV. Methods: Normal Liver tissue and HBV-infected, HCV-infected ,or dually infected (HBV and HCV) liver tissues were selected for this study. Formalin- fixed, paraffin-embedded sections(4 ?m) were prepared. Each of the liver tissue specimens was detected by three staining methods, including immunohistochemical methods ,Shikata’s orcein stain and Victoria blue stain,respectively. Results: In the three methods , all of six HBV -infected cases showed intense staining, and three cases with dual infection (HBV and HCV) were weakly positive. However, both normal and HCV-infected liver tissues showed no staining. HBsAg stained dark brown with Immunohistochemical stain; HBsAg containing ground-glass hepatocytes stained magenta with Shikata’s orcein stain; HBsAg stained blue with Victoria blue. Conclusion: Each of three methods has its own advantages and disadvantages: high specificity and sensitivity, but high cost for immunohistochemical methods;complicated and overelabrate procedure for preparation of solutions, lower specificity and sensitivity,but low cost, for special staining methods.

Ataxia Telangiectasia Mutated Proteins ; Breast ; metabolism ; pathology ; Breast Neoplasms ; metabolism ; pathology ; Carcinoma, Ductal, Breast ; metabolism ; pathology ; Carcinoma, Intraductal, Noninfiltrating ; metabolism ; pathology ; Cell Cycle Proteins ; metabolism ; Checkpoint Kinase 2 ; DNA-Binding Proteins ; metabolism ; Female ; Humans ; Lymphatic Metastasis ; Neoplasm Grading ; Protein-Serine-Threonine Kinases ; metabolism ; Tumor Burden ; Tumor Suppressor Protein p53 ; metabolism ; Tumor Suppressor Proteins ; metabolism

Objective To study the change and the significance of T-lymphocyte immune function in peripheral blood in population living in arsenic-contaminated area. Methods Fifty-three cases of patients with arsenism symptoms were selected into experimental group, inhabitants who had no chronic arsenism symptoms into control group in the endemic area of Shuocheng District, Shuozhou City, Shanxi Province in 2006. Vein blood samples were taken and analyzed with SAP assay to measure the percentage of CD3+ ,CD4+ and CD8+ T-cells. Results It was found that the percentage of CD3+, CD4+, and CD4+/CD8+ [(41.89 ± 11.58)%, (25.60 ± 9.05)% and 1.02 ± 0.41] in the experimental group was lower than that in the control group [(68.38 ± 7.23)%, (39.17± 4.28)% ,1.69 ± 0.56, t = 13.61,18.72,14.79, all P < 0.05], while there was no statistical differences of CD8+ [(25.30 ± 6.85)%] compared to the control group[(23.54 ± 8.35)%,t = 3.07,P > 0.05]. The gender-related effect of arsenic on CD4+ and CD8+ was found by multiple linear step regression analysis(t = - 3.05, - 4.30, all P < 0.05). In case group, there were no statistical differences in CD3+, CD4+, CD8+ and CD4+/CD8+[(40.65±10.06)%, (24.48 ± 6.29)%, (24.52 ± 8.16)%,0.98 ± 0.25] between males and females [(43.07±12.96)%, (26.77±3.12)%, (26.50 ±9.32)%, 1.07 ±0.41, t = - 0.76,3.05,0.30,2.10, all P > 0.05]. Conclusions The immune function of T-lymphocytes of patients with chronic arsenism has been suppressed. It is of active significance to detect T-lymphocyte subpopulation in peripheral vein in patients with chronic arsenism aiming at estimating the function of cell immune and providing early diagnosis index.

Objective To master current operating situation of water-defluoridation-project and the level of fluoride in drinking water of Zhangjiakou city and provide a scientific basis for prevention and control of the disease.Methods Itemized survey of current operating situation of water defluoridation projects built in 2010 and before,and the source of fund situation in Zhangjiakou city was carried out.One source water and 2 terminal water samples of the projects in use were collected,respectively.Water fluoride were determined by Sanitary Standard for Drinking Water Testing Method (GB/T 5750.5-2006).Results A total of 386 water improvement projects to reduce fluoride were investigated,310 in good operation,accounting for 80.31％; 6 in intermittent use,accounting for 1.55％; 70 out of use,accounting for 18.14％.Water fluoride was surveyed in 316 water improvement projects to reduce fluoride,175 of the projects provided water with normal fluoride,accounting for 55.38％; 141 of the projects provided water with fluoride exceeded the standard,accounting for 44.62％.The total investment of 386 water defluoridation projects was 21.8682 million yuan,the investment of the state,the collective and the individual were 10.0780 million yuan,6.2104 million yuan and 5.5798 million yuan,accounted for 46.09％,28.40％,25.51％,respectively.Conclusions The current situation of the projects is very worrying in Zhangjiakou city.Further instensify the water improvement project in diseased areas,insist on sustainable water defluoridation strategy.

We report the case of a 23-year-old woman who presentedwith prolonged menstruation and multiple bruises on thelimbs and trunk. Investigations revealed severethrombocytopenia and deranged coagulation profile withmarkedly prolonged activated partial thromboplastin time(aPTT). Lupus anticoagulant, anti-cardiolipin antibody andanti-beta-2-glycoprotein 1 antibody were positive. She wasdiagnosed with Immune Thrombocytopenic Purpura (ITP)with positive antiphospholipid antibody serology and givena course of intravenous methylprednisolone and taperingdoses of oral prednisolone. She was steroid free and had nobleeding or thrombotic event over two years follow up.

The purpose of the study was to prospectively evaluate safety and assisted with ethanol injection for hepatocellular carcinoma abutting gastrointestinal tract. 263 patients with 319 hepatic tumors that underwent percutaneous microwave ablation with curative intention were included. 101 lesions located less than 5 mm from gastrointestinal tract were in gastrointestinal group. 218 lesions located more than 5 mm from hepatic surface, gastrointestinal tract and first or second branch of hepatic vessels were in control group. The temperature of marginal ablation tissue proximal to gastrointestinal tract was monitored and controlled to fluctuating between 45 degrees C and 59 degrees C for more than 10 min for tumors in the gastrointestinal group. Ethanol (1-21 ml) was injected into marginal tissue in 62 of 101 lesions of the G1 group. 96 of 101 tumors (95.0%) in the gastrointestinal group and 208 of 218 tumors (95.4%) in the control group achieved complete ablation (P = 0.89). Local tumor progression for all the tumors were in the first year and the 6-,12- month local tumor progression rate in the gastrointestinal group and the control group were 6.9%, 11.9% and 7.3%, 8.3%, respectively (P = 0.21). There were neither immediate nor periprocedural complications in both groups. There was no delayed complication of gastrointestinal and bile ducts injury. Tumor seeding happened in one (1.1%) of the gastrointestinal group and three (1.8%) of the control group (P = 0.92). Under strict temperature monitoring, microwave ablation assisted with ethanol injection is safe and achieves a high complete ablation rate for hepatocellular carcinoma adjacent to gastrointestinal tract.

OBJECTIVETo analyze the risk factors of cognitive impairment after off-pump coronary artery bypass grafting (OPCABG).

METHODSA total of 102 patients [male: 82, age: (65.7 ± 7.1) years] undergoing OPCABG in our hospital between January 2009 and December 2010 were divided into postoperative cognitive dysfunction (POCD) group and non-POCD group by the MMSE questionnaire survey conducted at 7 days pre- and post-operation respectively.

RESULTSThe incidence of POCD was 48.0% (49/102). Multivariate logistic stepwise regression analysis showed: advanced age (OR = 1.32, 95%CI: 1.10 - 1.46, P = 0.002), smoking (OR = 1.26, 95%CI: 1.18 - 1.32, P = 0.001), hypertension (OR = 1.66, 95%CI: 1.36 - 1.78, P = 0.023), diabetes (OR = 1.62, 95%CI: 1.02 - 2.84, P = 0.032), stroke (OR = 3.32, 95%CI: 1.68 - 6.49, P < 0.001), mitral regurgitation (OR = 1.48, 95%CI: 1.26 - 1.89, P < 0.001), and time of wall clamp (OR = 4.84, 95%CI: 1.08 - 7.28, P < 0.001) were independent risk factors of POCD.

CONCLUSIONAdvanced age, smoking, hypertension, diabetes, stroke, mitral regurgitation, and prolonged time of wall clamp are major risk factors for POCD in patients undergoing OPCABG.

Aged ; Cognition Disorders ; etiology ; Coronary Artery Bypass, Off-Pump ; adverse effects ; Female ; Humans ; Male ; Middle Aged ; Postoperative Complications ; etiology ; Risk Factors ; Treatment Outcome

Objective To investigate the myocardial damage in rats fed with corn from Keshan disease area added with bean puree. Methods Male Wistar rats were randomly divided into 3 groups according to their body weights, and fed with corn, corn from Keshan disease area added with bean puree, corn from non-endemic area. The GSH-Px activity of vena cardalis blood was examined in 1 and 3 months, rats were sacrificed after being fed for 6 months to examine the heart changes with HE stain. Results The three groups of GSH-Px activity were different in 1 and 3 months respectively(F=23.60,72.46, all P<0.01); GSH-Px activity was (181.58±22.15), (44.76±28.59)U/L in rats fed with corn, was (195.03±17.66), (30.38±3.35)U/L in those fed with corn added with bean puree from Keshan disease area, lower than the group fed with corn of non-endemic area[(340.90±95.42), (125.17±13.64)U/L, all P < 0.01]. But the difference of GSH-Px activity between simple corn group and corn adding bean puree groups of Keshan disease area was not obvious(P>0.05). Myocardial damage incidence of the three groups was 3/9,1/9,2/7. Difference among three groups did not have statistical significance(χ2=1.33, P> 0.05). Conclusions Only corn from Keshan disease area may induce myocardial damage pathology change. Adding bean puree into corn does not increase damage.

OBJECTIVEIn order to clarify the exact molecular weight of tumor metastasis suppressor gene-1 (TMSG-1) protein and its cellular localization, a monoclonal antibody against TMSG-1 was prepared, characterized and applied to evaluate the metastatic potential of human tumors.

METHODSA dominant epitope-TMSG-1(15)-derived from TMSG-1 was synthesized based on Fmoc method, and the hapten was conjugated to Imject Maleimide activated mcKLH as a carrier protein. The antigen preparation was used to immunize BAL B/C mice. Hybridomas were generated and screened by ELISA for specific monoclonal antibodies, which were further characterized by western blotting and immunohistochemical staining.

RESULTSOne hybridoma cell line secreting anti-TMSG-1 antibody, designated as C8, was eventually established after primary ELISA screening, followed by rapid limited dilution procedure. It was confirmed that C8 was of IgM isotype. Result of competitive inhibition assay showed that the antibody was TMSG-1 specific. Using this antibody, an expected protein band of about 45,000 (relative molecular mass) was detected in the non-metastatic variants PC(3)-2B4 and PG-LH7 cells by Western blotting, but not in the isogenetic metastatic variants of PC3-1E8 and PG-BE1 cells. Immunohistochemistry using C8 showed a positive staining of cell membrane and cytoplasm of 2B4 and LH7 cells, whereas 1E8 and BE1 cells were non-reactive. Immunostaining using C8 of paraffin sections of 52 breast carcinomas and 41 colon cancers demonstrated a strong positivity in non-metastatic tumors, but none to weakly reactive in metastatic tumors (P < 0.05).

CONCLUSIONC8 monoclonal antibody against the synthetic peptide is TMSG-1 specific and is effective for Western blot and immunohistochemistry assays to detect TMSG-1 expression in cancer cells. TMSG-1 protein is about 45 000 (relative molecular mass) at cell membrane and cytoplasm of tumor cells. Expression of TMSG-1 protein correlates well, inversely with the tumor metastatic potential.

Animals ; Antibodies, Monoclonal ; biosynthesis ; immunology ; Breast Neoplasms ; metabolism ; pathology ; Cell Line, Tumor ; Cell Membrane ; metabolism ; Colonic Neoplasms ; metabolism ; pathology ; Cytoplasm ; metabolism ; Female ; Gene Expression Regulation, Neoplastic ; Humans ; Hybridomas ; immunology ; secretion ; Male ; Membrane Proteins ; immunology ; metabolism ; Mice ; Mice, Inbred BALB C ; Neoplasm Metastasis ; Sphingosine N-Acyltransferase ; Tumor Suppressor Proteins ; immunology ; metabolism

OBJECTIVETo establish the basis for Chinese dietary exposure assessment database by classifying and coding the data from the national dietary survey and pollutant surveillance.

METHODSThe method, which combined CODEX food classifying and coding of Codex Alimentarius Commission (CAC) with Chinese food classification of food composition table, was applied to classify and code the data of 1 810 703 Chinese dietary consumption and 487 819 pollutant surveillance. The coding system was according to the first two letters of the respective food group that represent the type or source of foods, the last four digits represent the serial number of the food in the CAC food classification. If the foods can be found in CAC food code system, its original food code is used. The new codes corresponding with the foods which are not exist in CAC food code system, is added according to CAC coding methods.

RESULTSDietary consumption data were divided into 6 major categories, 19 types, 75 groups, the agricultural products of pollutant surveillance corresponding to 499 codes. Comparing with CAC food coding system, Chinese dietary consumption data have added F (candy snacks) and G (beverages) 2 major categories, 4 types, 33 groups, 302 new codes. The additional groups most were the processing food groups with Chinese characteristics, such as canned, beverages, candy, meat products.

CONCLUSIONThe foundation of data communication to dietary exposure assessment has been established, and the connection of Chinese food classifying and coding with CAC data have been achieved.

China ; Consumer Product Safety ; Databases, Factual ; Diet ; classification ; statistics & numerical data ; Diet Surveys ; Humans ; Vocabulary, Controlled