Objective To explore the effects of kurorinone on the serum level of TNF-? and IL-6 in the patients with chronic hepatitis B (CHB). Methods 87 patients with CHB were randomly divided into groups A and B. Patients in group A (n=45) and group B (n=42) received kurorinone and diammonium glycyrrhizin treatment, respectively, for 3 months. The liver histopathological changes were observed, and liver function and the serum level of TNF-? and IL-6 in the patients with CHB were detected after treatment. Results Compared with group B, liver injury and liver function of the patients in group A were obviously ameliorated, and the serum level of TNF-? and IL-6 significantly decreased (P

Objective To evaluate the effects of kurorinone combined with thymosin on the treatment of chronic hepatitis B. Methods 178 patients with chronic hepatitis B were randomly divided into group A, B and C. 64 patients in group A received kurorinone combined with thymosin for 3 months. 58 patients in group B received kurorinone only, and 56 patients in group C received thymosin only. Results At the end of treatment, HBeAg and HBV DNA negative-transformed rates were respectively 51.8% and 53.6% in group A, but 32.7% and 34.6% in group B, 21.6% and 21.6% in group C, the differences were statistically significant (P

Objective To investigate whether ultrasound-mediated microbubble destruction can effectively deliver pEGFP-N1 plasmid into human gingival fibroblasts (HGFs).Methods The primary cultured HGFs were divided into 4 groups,that is,plasmid,microbubble+plasmid,ultrasound+plasmid,and ultrasound+microbubble+plasmid groups.pEGFP-N1 plasmid was used to transfect to HGFs as a gene marker with ultrasound-mediated microbubble destruction.The last group was further divided into subgroups to optimize the transfection conditions.After 48 h,phase-contrast fluorescent microscopy was employed to evaluate the expression of green fluorescent protein (GFP).The cell vitality was measured by the MTT assay.Results The transfection efficiency of the ultrasound+microbubble+plasmid group was higher than other experiment groups.Optimal gene expression was found when ultrasound was radiated at 1.5 W/cm2 for 60 s,microbubble was at a concentration of 10% and plasmid was at a concentration of 6.67 ?g/ml,and the transfection efficiency was highest under this condition.Conclusion Under specific conditions,ultrasound mediated microbubble destruction enhances the reporter gene transfection and expression in HGFs.

Objective To investigate the activation of β-sheet breaker peptide H102 on ERK signal transduction pathway in brain of PAP double transgenic mice. Methods PAP double transgenic mice were randomly divided into model group and H102 treatment group (n=10 for each group). A group of C57BL/6J mice with the same genetic background was served as controls. H102 (5.8 mg/kg) 5 μL was infused by intranasal administration to mice in H102 treatment group, and equal volume of blank solution of H102 (chitosan, BSA) was given to mice in control group and model group. The ability of spatial reference memory was tested by Morris water maze after 30 days of treatment. Then immunohistochemistry tests and Western blot technique were used to detect the content of RAS, P-MEK and P-ERK proteins in mouse brain. Results (1) The ability of learning and memory was significantly lower in model group than that of control group. The ability of learning and memory was significantly improved in treatment group than that in model group (P<0.05). (2) The contents of RAS, P-MEK and P-ERK in mouse brain were significantly lower in model group than those of control group, and these protein ex-pressions were significantly increased in treatment group than those in model group (P<0.01). Conclusion β-sheet break-er peptide H102 can activate ERK signal transduction pathway in brain of PAP double transgenic mice, increase PAS, P-MEK and P-ERK levels in nerve cells, and improve the ability of learning and memory in PAP mice.

OBJECTIVE To discuss the quality management of the recycled medical instrument.METHODS We executed the routine of recycled instrument seriously during our daily work,and gave strict measures during quality management such as callback,washing,classification,packaging,sterilization,handout,and inspection.RESULTS The recycled medical instrument had been used and managed for more than one year and the clinical work was ensured in progress smoothly and achieved satisfied results.CONCLUSIONS Actualizing the measure of quality control,perfecting the method of management and improving quality control could assure the safe and efficient use of recycled medical instrument and reach the standard of controlling hospital infection,and advancing medical nursing level.

AIM To investigate antitumor effects of curcumin (Cur) combining with adriamycin (ADR) on human tumor cell lines in vitro and study the mechanisms. METHODS The antitumor effects of the drugs on tumor cell lines in vitro were determined with MTT method. The Jin's formula was used to analyze the effect of drug combination. Cellular ADR accumulation was measured by fluorescence spectraphotometry. RESULTS In simultaneous adiministration Cur 4 25～34 00 ?mol?L -1 combining with ADR produced a simple addition or potentiation effect. The cellular ADR accumulation was markedly increased in the presence of Cur in MDR cells, but decreased in sensitived cells. The experiment of membrane fluidity show that that Cur affects membrane fluidity neither on KB nor on KB v200 cell line. CONCLUSION Simultaneous adiministration of Cur combining with ADR produces synergistic effect. The mechanism is connected with increasing cellular ADR accumulationon on KB v200 cell line. While on KB cell line, it is related to synergistic pharmacological effect. But the action of Cur is not connected with the change of membrane fluidity on both cell lines.

Objective To study the efficacy of interferon ? 2b (IFN? 2b) combined with kurorinone in the treatment of chronic hepatitis B. Methods 146 patients with chronic hepatitis B were randomly divided into four groups(A,B,C,D). Based on the similar general treatment(group D),37 patients in group A was treated with IFN ? 2b and kurorinone. However, 37 patients in group B and 36 patients in group C received IFN ? 2b and kurorinone,respectively.Dynamic changes and relationships among liver histopathology,expression of TGF ? in liver tissue and serum levels of TGF ?,HBeAg,HBV DNA were studied using immunohistochemistry,radioimmunoassay and ELISA before and after treatment of IFN ? 2b and kurorinone. Results The score of histological hepatitic fibrosis,expression of TGF ? in liver tissue and serum levels of TGF ?,HBeAg, HBV DNA in group A showed significant lower than in group B and group C ( P

Aim To probe the mechanism of the therapeutic effect of APS against DM rats by measuring the level of TNF-?,as well as observing the change of caspase-3 protein in pancreatic beta cells.Methods Thirty DM rats induced by STZ were randomly divided into three groups:DM group,APS low dosage group,APS high dosage group,and another 10 normal rats were taken as the control group.The drug was given for 6 weeks.The research included measuring the level of TNF-? in serum and the expression of caspase-3 protein in pancreatic beta cells.Results ① The level of TNF-? was higher in model group than that of the normal group(P

Objective To evaluate the methylation status at CpG site -55 in the interferon-gamma (IFN-7) gene promoter and its effect on IFN-7 expression in chronic hepatitis B. Method The authors recruited 30 patients with UBeAg-positive chronic hepatitis B (CHB), 30 HBeAg-negative CHB patients, and 30 healthy blood donors. Pyrosequeneing was used to determine the methylation status at CpG site -55 in the IFN-γ gene promoter following bisulfite treatment of DNA in peripheral blood mononuclear cells (PBMCs). The expression of IFN-γ was analyzed by real-time RT-PCR and ELISA. HBV DNA in PBMCs was detected by nested PCR. Results The methylation level at CpG site -55 in the IFN-γ gene promoter was significantly increased, resulting in subsequent down-regulation of the expression of this cytoldne in CHB. The methylation level at CpG site -55 was significantly higher in HBeAg-positive patients than in HBeAg-negative ones (P<0.01) and was also significantly higher in PBMCs from HBV DNA-positive patients than from HBV DNA-negative ones (P<0.01) ; the methylation level at CpG site -55 was positively correlated with the amount of HBV DNA in serum (P<0.01). Oonclusion IFN-γ gene expression appears to be regulated by methylation of the IFN-γ gene promoter in CHB; the methylation level at CpG site -55 is associated with HBV infection.