The bystander effect(BE) plays an important role in the gene therapy of cancer by the herpes thymidine kinase/ganciclovir(HSV-TK/GCV) system.It enhances the therapeutic efficacy of this system.Up to now,the exact underlying mechanism of the bystander effect remains unclear.A large body of evidence has indicated a close correlation of the connexin expression and gap junction in the targeted cells to the bystander effect.Here the publications concerning the relationship of gap junction with the bystander effect in the HSV-TK/GCV treatment have been reviewed.The possible cell death signals that can be transferred through gap junction to induce the bystander effect are also discussed.

The accelerating pace of exchanges and cooperation in medical field between China and foreign countries demands a large number of medical papers, medical-related materials to be ac-curately translated into multiple languages , especially between English and Chinese . Oriented at English majors (medicine directed), based on eco-translatory approach and student-centered teaching method by creating simulations of the medical English ecological translation environment, this paper provided a better and effective practice-based teaching idea, which can promote students' medical English translation competence and strategies, even cultural consciousness and pragmatic ability in a comprehensive manner.

Objective To study the adsorbability of active carbon fiber(ACF) for gaseous benzene and to use ACF for the determination of benzene in the air in future.Methods The adsorbability of ACF was investigated and the results were compared with that of granular active carbon(GAC).Results The adsorption efficiency of ACF was 93%,the selective adsorbability was 94.28%,the saturation adsorption capacity of gaseous benzene was 25%,as for GAC,they were 88%,88.57% and 12% respectively.Conclusion ACF is better than GAC in the adsorption efficiency of benzene in the condition of low concentration and long time sampling.

A new, convenient, and rapid method for kinetic measurement of human fibrinolysis was established. The alteration of absorbance (A) in the process of blood coagulation and lyses was automatically scanned and recorded using a UV2000 spectrophotometer connected to a computer. The parameters of human fibrinolysis kinetics were established. Urokinase at 20 U/mL was the optimal concentration used. There was significant difference in fibrinolysis kinetics and plasma plasminogen concentration between 22 normal subjects and 27 patients with acute myeloblastic leukemia (P<0.05 and <0.01 respectively). The coefficience of variation was (5.24+/-1.51)%. This method could also be used to measure the plasma fibrinogen concentration at the same time. It was concluded that this method was stable and was capable of providing dynamic, direct experimental data and multiparemeters for clinicians. It was also valuable in evaluating the anti-and pro-fibrinolytic capcity of patients' plasmas, allowing for monitoring of therapy, choice of drugs and adjustment of drug concentrations.

Objective To compare the differences of atria and atrial myocyte structure in patients with atrial fibrillation (AF) and sinus rhythm(SR) .To evaluate the influence of AF on cardiac function .Methods 79 patients without heart failure undergoing car-diopulmonary bypass surgery were divided into the AF group (n=39) and the SR group(n=40) .Echocardiography was performed for analysis of left ventricular end diastolic dimension(LVDd) ,left ventricular end-systolic dimension(LVDs) ,left ventricular poste-rior wall(LVPW) ,interventricular septum(IVS) and left atrial diameter(LAD) .Part of left atrial appendages was taken freshly for HE staining in order to observe atrial tissue structure .Results LVDd ,LVDs ,LVPW and IVS of the AF group were lower than that of the SR group .But LAD of the AF group was higher than the SR group .There was statistical significance in IVS and LAD between the two groups(P<0 .05) ,and there were no significant differences in other aspects (P>0 .05) .Compared with the SR group ,the AF group had thinner myocardial atrophy ,more obvious fibrosis ,smaller nucleus and darker HE staining .Conclusion The incidence of AF was mainly in rheumatic heart disease .The development of AF was mostly accompanied with the enlargement of LAD and the change of atrial tissue structure which showed that AF can reduce cardiac function .

Animals ; Cytokines ; blood ; Endotoxemia ; blood ; therapy ; Endotoxins ; blood ; toxicity ; Enzyme-Linked Immunosorbent Assay ; Hemofiltration ; Interleukin-1 ; blood ; Interleukin-10 ; blood ; Models, Animal ; Swine ; Time Factors ; Tumor Necrosis Factor-alpha ; analysis

Objective To evaluate the feeding effect of semi-demand feeding and abdominal massage on the feeding process, feeding performances and clinical safety (including the time of returning to birth weight, feeding tolerance, apnea). Methods A total of 120 preterm infants that met inclusion criteria of the study were randomly assigned to three groups, and each group had 40 cases. Control group:received standard feeding care. Semi-demand feeding group: received 5-10 minutes of oral motor intervention every time before feeding(including oral stimulation and non nutritional sucking), then decided feeding methods according to its consciousness behavior state. Semi-demand feeding combined abdominal massage group: received both semi-demand feeding and abdominal massage before feeding. Observed and recorded the three groups′ transition time, whether there were statistically significant differences in feeding performance and clinical safety. Results The feeding transition time was (11.55± 4.69), (10.98±3.85), (8.50±3.87)d in control group, semi-demand feeding group and semi-demand feeding combined abdominal massage group, and there were significant differences (F=6.088, P=0.003). In terms of feeding performance, the feeding efficiency were (7.27 ± 2.65), (9.74 ± 2.63), (9.52 ± 2.13) ml/min, the feeding proficiency were (66.31 ± 14.51)%, (76.64 ± 12.46)%, (82.26 ± 10.65)%, the volume transfer were (63.99 ± 11.02)%, (80.16 ± 14.41)%, (84.97 ± 11.16)% in control group, semi-demand feeding group and semi-demand feeding combined abdominal massage group, and there were significant differences (F=12.189, 16.383, 31.959, all P < 0.01).Among the clinical safety, the time of restoration of birth weight were (10.55 ± 1.99), (9.28 ± 1.77), (10.05 ± 2.46) d in control group, semi-demand feeding group and semi-demand feeding combined abdominal massage group, and there were significant differences(F=3.759, P=0.026). The incidence of feeding intolerance were 50.0%(20/40), 40.0%(16/40), 22.5%(9/40), and there were significant differences(χ2=6.613, P=0.037). The incidence of apnea were 37.5%(15/40), 20.0%(8/40), 15.0%(6/40), and there were significant differences(χ2=6.093, P=0.048). Conclusions The combined intervention methods could accelerate the feeding process, improve feeding performance as well as reduce the incidence of feeding intolerance and apnea. Hence, semi-demand feeding combined abdominal massage is a recommended choice for clinical use.

Objective:To investigate the differences in related indices of ulcerative colitis (UC) respectively induced by free drinking and intragastric administration of dextran sodium sulfate (DSS) in mice to provide experimental reference for the optimization of UC model.Methods:Totally 30 C57BL/6 mice were randomly divided into the normal control group,free drinking group and intragastric administration group with 10 ones in each.The mice drank water freely with free drinking or intragastric administration of 3% DSS solution at the dose of 4 g·kg-1·day-1 for 7 days to establish the UC model.The differences in disease activity index (DAI),histological damage sore and activity of myeloperoxidase (MPO) among the groups were compared.Results:Two mice died during the experiment in the free drinking group,and DAI of survival mice was (8.8±1.6).There was no death of mice in intragastric administration group,and DAI was (9.0±0.8),and there was no significant difference in DAI between the groups (P>0.05),while the coefficient of variation in the free drinking group was higher than that in the intragastric administration group (18.7 vs 8.6).The colonic histological damage score of the free drinking group and the intragastric administration group was 24.8±4.2 and 27.0±2.8,respectively,which was typical inflammatory change with no significant difference (P>0.05),while the coefficient of variation of the free drinking group was higher than that of the intragastric administration group (16.9 vs 10.4).MPO of the normal control group,free drinking group and intragastric administration group was (0.41±0.03),(2.32±0.34) and (2.05±0.18) U·g-1,respectively.Compared with the normal control group,significant difference in MPO was shown in the free drinking group and the intragastric administration group (P<0.01),while there was no significant difference in MPO between the groups (P>0.05),and the coefficient of variation in the free drinking group was higher than that in the intragastric administration group (14.7 vs 8.8).Conclusion:Both free drinking and intragastric administration of DSS can successfully induce the UC model in mice.Compared with the free drinking group,the intragastric administration group has low mortality rate and low coefficient of variation.Therefore,intragastric administration has more advantages than free drinking in inducing the UC model in mice.

Objective To survey the knowledge requested by patients with coronary artery disease (CAD) after stent implantation.Methods A survey on CAD and stent-related knowledge requested by CAD patients with stent implantation was conducted with a self-designed questionnaire from September 2013 to November 2013.Total 362 patients (235 males and 127 females) aged (67 ± 12) years participated in the survey in Yuetan Community Health Service Center and Fuxing Hospital in Beijing.Open questions and heuristic questions were used together during the survey.Results The knowledge requested by patients were:diet management(255,70.4％),side effects of medication(241,66.6％),management of physical activity (221,61.0％),prevention of CAD(181,50.0％),withdrawal of medication(176,48.6％),the life of stents (168,46.4％),post-operation check-up items (162,44.8％),the causes of CAD (156,43.1％)and drug mechanisms(134,37.0％).Patients with stent implantation less than one year requested more knowledge about the cause of CAD (x2 =37.4,P ＜ 0.001),life-time of stent (x2 =39.9,P ＜0.001),prevention of CAD (x2 =13.4,P =0.001),post-operation check-up items (x2 =21.2,P =0.001) and requested less knowledge about withdrawal of medication (x2 =9.56,P =0.008),diet management (x2 =6.49,P =0.04) than those with more than one year.Patients aged ＜ 70 years requested more knowledge about the cause of CAD (x2 =31.6,P ＜ 0.001),prevention of CAD (x2 =9.99,P =0.007),life-time of stent (x2 =79.1,P ＜ 0.001),side effects of medication (x2 =7.84,P =0.02) than patients aged ＞ 70 years.Patients with education higher than junior high school requested more knowledge about the cause of CAD (x2 =26.6,P ＜ 0.001),prevention of CAD (x2 =14.4,P =0.001) and life-time of stents (x2 =7.82,P =0.02) than those with education lower than junior high school.Patients with education higher than junior college requested more knowledge about the cause of CAD (x2 =26.6,P ＜ 0.001) and post-operation check-up items (x2 =10.7,P =0.005) than those with education lower than junior college.Conclusion Some factors affect the knowledge requested by patients with coronary artery disease (CAD) after stent implantation,which should be considered in health education for CAD patients.

Objective To Study wheather the endogenous arginine vasopressin(AVP)is involved in the effect of oxotremorine(a muscarinic receptor agonist)-induced hypothermic response.Methods Core temperature and motor activity were monitored in undisturbed rats using radiotelemetry.Effect of AVP V1 antagonist on oxotremorine(OXO)-induced changes in body temperature and motor activity were observed in the rats.Results Administration of OXO led to a marked hypothermia.Core temperature recovered to basal levels at 4 hours after OXO administration.AVP V1 antagonist blocked markedly the hypothermia effect of OXO.Conclusion The AVP V1-receptor antagonist block the hypothermic effect of OXO,which suggests that OXO-induced hypothermia is mediated by AVP releasing.