Objective To investigate the effect of lansoprazole injection on 24-hour intragastric pH in healthy volunteers. Methods The volunteers inclouding 10 women and 10 men, were divided into experitmental group and control group randomly, each group of 10 cases. After testing the pH initial value in stomach through pH determination electrode, the cases in experitmental group were drip the drug of lansoprazole injection, the cases in control group were drip the same volume of 0.9% sodium chloride solution. Then constantly determined the value of pH in the stomach for 24 h. Results The pH value in the stomach of expertimental group after injected lansoprazole was significantly higher than that before administration (P < 0.05). The pH value in the stomach of expertimental group was higher than that in control group between finished of injection and 24 h, especially in the first 12 h after administration, there were significantly differences (P < 0.01). The pH value in experimental group after injected lansoprazole for 24 h was 4.565 ± 1.109, in control group was 2.211 ± 0.263, there was significant difference (P < 0.01). The percentage of maintenance time of pH reaching 4.0 and 6.0 in stomach in experimental group were (73.36 ± 21.08)% and (53.22 ± 23.76)% , in control group were (13.28 ± 10.55)%and (3.92 ± 2.17)%, there were significant differences (P<0.01). Conclusions The strength of acid suppresion of lansoprazole injection is worthy of approving, and it can work at full capacity in treatment of patients with peptic ulcer complicated with upper gastrointestinal hemorrhage if lansoprazole is given every 12 h.

Objective:To probe the correlation of intra-operative hyaluronic acid(HA) changes with hepatic allografts cold ischemia reperfusion injury in liver transplantation.Methods:The patients with orthotopic liver transplantation were assigned to 3 groups:① group A :liver allografts were stored in University of Wisconsin's solution(0℃) for 5-6 h before implantation;② group B :liver allografts were stored in U W's solution(0℃) for 8-9 h before implantation;③ group C :liver allografts were stored in U W's solution(0℃) for 12 h before implantation.The serum samples were taken up at 5 min,60 min,120 min,180 min after the donor liver was transplanted and reperfused to detect the concentration of HA.Results:After donor liver was transplanted and reperfused,serum HA concentration decreased immediately and gradually.HA decreased rate :group A 4.58 ?g/L?min-1,group B 4.16 ?g/L?min-1,group C 2.26 ?g/L?min-1.Serum HA decrease rate was faster in group A and B than that in group C(P

Animals ; Cells, Cultured ; Female ; Granulosa Cells ; metabolism ; Pituitary Adenylate Cyclase-Activating Polypeptide ; genetics ; metabolism ; Platelet Activating Factor ; pharmacology ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley

Objective To investigate the relative molecular weight of polysaccharides in Bletilla striata by matrix-assisted laser desorption ionizatior/time-of-flight mass (MALDI-TOF-MS). Methods 2, 5-Dihydroxybenzoic acid (DHB) as a matrix was used. By drop drying at room temperature the proportion of the matrix and polysaccharide sample was 1.5∶1. Baseline mode and laser intensity at 1 500-2 500 units were carried out. Results The relative molecular weights of polysaccharides in B. striata were 6?104-3?105, whose distribution rang was wide. Conclusion The relative molecular weights of polysaccharides in B. striata are obtained by MALDI-TOF-MS technique in the proportion of DHB-polysaccharides in B. striata 1.5∶1, which is valuable for the preparation and good quality by the direct drop drying method.

Objectives To study the influential factors of the von Clauss method and to promote the method for fibrinogen assay in clinical laboratories in China. MethodsKits of foreign and domestic products were used. Calibration curves for fibrinogen determination were established, and calibration plasma was used for comparison. Effects of pH value, thrombin activity, and temperature on the measurement were studied.Results The reproducibility of the von Clauss method using domestic thrombin and related reagents was excellent, the within day CV being 0.039 1, and the between day CV 0.049 7. The percentage variations of calibration plasma determination, with the foreign fibrinogen assay kits using domestic reagents, were +3.17% , +4.76%, and -6.03%, respectively. Determination of a lyophilized plasma using the two sources reagents showed similar results.Conclusions Thrombin and relevant reagents produced in China could be used as a substitute for kits purchased abroad, which would promote the use of von Clauss method in clinical laboratories of China.

Objective To evaluate the efficacy of 2-year treatment of interferon alpha combined with lamivudine therapy in chronic hepatitis B patients. Methods From 1999 to 2001 87 patients were enrolled and randomized into two groups.36 patients received interferon alpha and lamivudine simultaneously for 26 weeks,then lamivudine alone for 76 weeks.51 patients received lamivudine alone for 104 weeks.The efficacy was evaluated by biochemical and virological parameters.The YMDD motif was detected in both groups. Results There was no difference between two groups in HBV DNA response ( P =0.24).Proportion of HBeAg/Anti-HBe seroconversion in combination group was significantly higher than lamivudine group (38.9% vs 17.6%)( P =0.03).HBV YMDD mutation rate in combination group was lower than in lamivudine group (22.2% vs 43.1%, P =0.04). Conclusion The efficacy of combination therapy appeares to be better than lamivudine monotherapy.Combination treatment may delay or diminish the development of HBV YMDD mutation.

0.05).Under SEM,the BMSCs showed good adhesion to beta-TCP with obvious proliferation.Conclusion BMSCs can grow and proliferate well on the compound BMSCs/beta-TCP and beta-TCP has good biocompatibility with BMSCs in vitro,which may be used as a good scaffold material for injectable tissue engineering bone.

To investigate the influence of mixing ratios on the hardness,wear resistance and compressive strength of the cements clinically used,Zinc Oxide Eugenol cement,Glass ionomer cements,Zinc Phosphate Cement,and Dual-curing composite cement were mixed at different ratios separately,then made into test pieces.Vickers hardness,wear resistance and compressive strength of these test pieces were measured by related machines.The results showed that vickers hardness,wear resistance and compressive strength of Zinc Oxide Eugenol cement,Glass ionomer cements and Zinc Phosphate Cement reduced with the decrease of powder/liquid ratios.As to Dual-curing composite cement,Vickers hardness,wear resistance and compressive strength decreased with the difference between A/B ratio and 1∶1 increase.Conclusively,mixing ratios could influence the mechanical proprieties of the cements clinical used,so the use of cements should be under the instructions of the product.

Objective To study the different curative effect between r-tPA application and urokinase in the interventional therapy for acute and severe pulmonary embolism.Methods Analyzed the clinical date of 22 cases acute and severe pulmonary embolism patients,and classified them into two groups according to the application of r-tPA and urokinase to compare the changes of their blood pressure,heart rate,arterial partial pressure of oxygen,hemachrome and pulmonary arterial pressure before and after therapy,meanwhile,record the thrombolysis time that the two groups took.Results The thrombolysis effect time adopting urokinase was remarkably longer than that thrombolysis adopting r-tPA(P<0.05); The blood pressure,heart rate,arterial partial pressure of oxygen of the two groups gained remarkable improvement after therapy(P<0.05).The pulmonary arterial pressure of the urokinase group dropped obviously after operation(P<0.05),while the r-tPA group dropped not so significantly after operation.The hemachrome of the two groups did not dropped significantly after operation.Conclusion The r-tPA and urokinase are both effective to interventional therapy for acute and severe pulmonary embolism,while r-tPA can clearly shorten the time in thrombolysis and could reduce any bleeding risk.

Molecular targeted therapy plays an important role in the treatment of gastrointestinal cancer.In recent years,a large number of targeted drugs have been developed and tested in clinical trials to verify their efficacy and security.The better efficacy and security of targeted drugs represented by monoclonal antibodies and tyrosine kinase inhibitors have been demonstrated in each phase of clinical trials.