In order to investigate the mutation of HBV polymerase gene reverse transcription conserved region (P region) in chronic hepatitis B (CHB) patients, 212 CHB patients who took antiretroviral treatment with nucleotide analogues were chosen. The drug resistance mutations of HBV P region and HBV genotype were detected by Pyrosequencing. Sequence analysis showed that the drug resistance sites of HBV P region located at sites 173; 180; 181; 184; 204; 236 and 250. The main site of HBV P region drug resistance was 204 and 180, accounting for 35.8% and 23.5%, respectively. There were significant differences in the mutation rate of site 180 among different age groups. There were also significant differences in the mutation rate of site 204 among younger than 30 age group, 41 to 50 age group and 51 to 60 age group. (P < 0.05, P < 0.01). The mutation rate of site 180 combined with site 204 was 66.6%. The mutation rate of site 181 combined with site 236 was 23.3%. The age of C genotype infected patients was significantly older than B genotype infected patients (P < 0.01). M204V/I mutation mostly existed in the form of joint L180M mutation, the mutation rate was age-related. The detection of HBV genotypes and drug resistance sites of HBV P region have important clinical implications for the treatment and prognosis of patients with CHB.
Adult ; Aged ; Antiviral Agents ; pharmacology ; China ; Drug Resistance, Viral ; Female ; Gene Products, pol ; genetics ; Genotype ; Hepatitis B virus ; classification ; drug effects ; enzymology ; genetics ; Hepatitis B, Chronic ; drug therapy ; virology ; Humans ; Male ; Middle Aged ; Mutation, Missense ; Young Adult

Cardiovascular Diseases ; etiology ; prevention & control ; Humans ; Metabolic Syndrome

Objective To examine the expression change of HIF-1α and VEGF in protein levels and the corelation of them in Q8C939 cell line under chemical hypoxia induced by CoCl2 in vitro. Methods ELISA and immunohistochemical technique were used to examine the change of VEGF and HIF-1α protein level in QBC-939 line in different concentrations (200, 150, 100, 50, 0 μmol/L) of COCl2 and different periods (6 h, 12 h, 24 h, 48 h) in hypoxia. Results CoCl2 can up-regulate the expression of HIF-1α and VEGF at least partly in a dose and time dependent pattern. ELISA demonstrated that the level of VEGF protein in different concentrations and different hypoxia periods, the result showed that the VEGF protein was in different concentration groups over contrast group (P<0.05). The VEGF protein also increased continuously with the growing of hypoxia time (P<0.05). Immunohistochemical detection of concentrations of different groups, HIF-1α, VEGF protein in the average gray compared with the control group was different(P<0.05). Different time periods of hypoxia HIF-1α, VEGF protein in the average gray, any two group comparisons have difference (P<0.05). Different concentrations, the normal control group, different time period HIF-1α and VEGF protein expression of relevance were analyzed. The correlation coefficient was 0.830, P <0.01, 0.909, P <0.01. Conclusion In QBC939 cell line of hypoxia, there is up-regulation HIF-1α and VEGF.HIF-1α regulated the expression of VEGF.

Cardiovascular Diseases ; prevention & control ; China ; Humans

Radioimmunotherapy using monoclonal antibodies incorporated with radionuclide has been showed to be an effective agent for refractory non-Hodgkin's lymphoma (NHL). Many anti-CD20 antibodies labeled with radionuclide, such as 90Y-ibritumomab tiuxetan (Zevalin) and 131I-tositumomab tiuxetan (Bexxar), have been reported to be effective for the treatment of patients with relapsed or refractory low-grade, follicular, or transformed NHL. This review summarizes the current advance in clinical trials and studies of Zevalin and Bexxar for the treatment of NHL patients.

BACKGROUND:Several studies have demonstrated that bone marrow mesenchymal stem cells (BMSCs) inhibit the proliferation and activation of T lymphocytes, exerting a role of negative immunological regulation. OBJECTIVE: To induce rat BMSCs to differentiate into neuron-like cells in vitro using all-trans retinoic acid and to investigate the effects of differentiated cells on T lymphocyte proliferation.DESIGN, TIME AND SETTING: A cytological in vitro observation was performed in Guangdong Medical College in March 2008.MATERIALS: Two male 4-week-old Sprague Dawley rats were provided by the Laboratory Animal Center of Guangdong Medical College. Fresh healthy human blood was provided by the Department of Clinical Laboratory, Guangdong Medical College. METHODS: Rat BMSCs were isolated by adherent method and were passaged in vitro. Cells of passage 5 were pre-induced with Low glucose-dulbecco's modified eagle's medium (LG-DMEM) containing 0.3 mg/L all-trans retinoic acid and 10% fetal bovine serum. Twenty-four hours later, aforementioned LG-DMEM was discarded and LG-DMEM containing 0.6 mg/L all-trans retinoic acid was added to induce cells differentiation into neuron-like cells. Fresh healthy human blood was taken to prepare responding cells. Rat BMSCs, as stimulator cells, were included for one-way mixed lymphocyte reaction. Four groups were designated. Control group: 100 μL of responding cells at a concentration of 1×109/L; Experimental group 1:1×104 neuron-like cells + 100 μL of responding cells; Experimental group 2:1×105 neuron-like cells + 100 μL of responding cells; Experimental group 3:1×106 neuron-like cells + 100 μL of responding cells.MAIN OUTCOME MEASURES: Morphological observation of induce-differentiated cells, identification of nerve cells, and one-way mixed lymphocyte reaction results.RESULTS: Fifty minutes after addition of inducing medium, under the optical microscope, BMSCs exhibited a typical morphology of perikaryon. Three hours later, most of cells became into bipolar or multipolar neuron-like cell appearance with cell bodies and processes. Immunocytochemical staining results showed that majority of cells exhibited neuron specific enolase- and nestin-positive expression and glial fibrillary acidic protein-negative expression. Compared with the control group, radionuclide counts per minute were significantly reduced in each experimental group (P<0.05). There was significant difference in radionuclide counts per minute between experimental groups (P<0.05). With increasing BMSCs amount, the inhibitory effects on T lymphocyte proliferation were more evident.CONCLUSION: AII-trans retinoic acid can induce neuron-like cell differentiation of rat BMSCs in vitro. The neuron-like cells can inhibit human T lymphocyte proliferation in a dose-dependent manner.

Objective To study the role of ARHI protein and COX-2 protein and to explore their correlation in pathogenesis of adenocarcinoma of the uterine cervix.Methods The expression of ARHI and COX-2 protein were detected both in 40 cases of adenocarcinoma of the uterine cervix and in 30 cases of normal cervix by immunohistochemistry.Results The positive rate of the expression of ARHI protein in adenocarcinoma of the uterine cervix was 50.0％ (20/40),which lower than that in normol cervix controls 90.0％ (27/30),the difference was significant ( x2 =12.43,P ＜ 0.05 ) ; The positive rate of the expression of COX-2 protein in adenocarcinoma of the uterine cervix was 82.5 ％ (33/40),which higher than that in normol cervix controls 0 (0/30),the difference was significant (x2 =46.16,P ＜ 0.05 ) ;The positive expression rate of ARHI was negatively correlated with the clinical stage of cervical adenocarcinoma ( x2 =3.96,P ＜ 0.05 ) disease and pathological grade (x2 =7.04,P ＜ 0.05 ).COX-2 protein was positively correlated with pathological grade (x2 =7.04,P ＜0.05 ),but had no correlation with the clinical stage of cervical adenocarcinomacervical adenocarcinoma stage of diseas(P ＞ 0.05) ;The expression of ARHI protein and COX-2 protein wasn't correlated with lymph nodeatic meatastasis(P ＞ 0.05);The expression of ARHI protein had correlation with the expression of COX-2 protein (r =0.31,P ＜ 0.05 ).Conclusion Inactivation of ARHI gene and the abnormal expression of COX-2 protein are involved in the origin of cervical adenocarcinoma,their synergistic reaction may play an important role in tumor origin of cervical adenocarcinoma.

Objective:To evaluate the current situation and the developing trend of 5-HT3 receptor antagonists used in 25 hospital of Wuhan during the period of 2003～2005 in order to provide reference for clinical doctors and pharmacists. Method:The 5-HT3 receptor antagonists were statistically analyzed in respect to the purchase sum of money,DDDs and daily costs. Result:During the 3 years, purchase sum of money of 5-HT3 receptor antagonists were yearly increasing. The share of the market of domestic drugs showed an increasing tendency,while the imported drugs decreased year by year. Granisetron, ondansetron and tropisetron were much more frequently used than others. Conclusion:The market of the oral agents of 5-HT3 receptor antagonists will further expand in China.

On the basis of analyzing traditional Chinese medicine(TCM) pathogenesis character of early hypertension in Macao,to induce the main pathological mechanism of early hypertension is stagnation of phlegm and blood,excess of liver yang.Activiting qi,blood and regulating vessel are general principles of treatment.Dissipating phlegm and promoting blood circulation,repressing hyperactive liver yang and nourishing tendon interrupt early pathological change,moreover,it embodies the TCM theory of ‘early treatmrnt to prevent deterioration’.

Objective To conduct the performance verification of the Stago STA-R automatic blood coagulation analysis system once every year to evaluate the analysis system for ensuring its accuracy and reliability .Methods According to the related docu-ments of the Clinical and Laboratory Standards Institute (CLSI) ,5 items of prothrombin time (PT ) ,activated partial clotting en-zyme live time (APTT) ,thrombin time (TT) ,fibrinogen (Fib) and antithrombin Ⅲ (ATⅢ) were selected to conduct the verifica-tion and preliminary evaluation on the accuracy ,imprecision ,carry-over rate ,linearity range and reference interval of the instrument analysis system .Results The relative bias(SE% ) of accuracy in each item was less than 5% .The intra-batch and inter-batch im-precisions (CV) were less than 3% and 5% respectively .The carry-over rates were within 4% .The linearity of Fib and AT Ⅲ was very well ,r2 were 0 .9980 and 0 .9979 respectively .Validated reference interval was consistent with quotative reference range . Conclusion The Stago STA-R automatic blood coagulation analysis system has good analytical performance ,can provide accurate and reliable test results for clinical doctors .