The paper described the concept of evidence-based medicine and its guiding role in clini-cal practice and scientific research. It emphasized the importance of teaching evidence-based medicine in clinical medicine teaching of medical college students, and put forward some suggestions on how to carry out evidence-based medicine teaching among undergraduate students. In the course of undergraduate study, students should have preliminary grasp of how to apply the theory of clinical epidemiology to evaluate the evidence of clinical research so that they could evaluate the authenticity, importance and applicability of the research evidence . Besides , they could correctly understand and apply the evidence of evidence-based medicine in clinical practice in the future, and at the same time cultivate their scientific research thinking and innovative ability.

Management of hyperthyroidism in pregnancy and lactation has been the topic for many years. This article has discussed the use of antithyroid drugs(ATDs) in pregnancy and lactation, including the choice, the safety, as well as the influences of ATDs to infants.

Objective: To investigate Leptin resistance of patients with metabolic syndrome. Methods: 50 patients with metabolic syndrome and 30 health persons as control were investigated. Body mass index(BMI)、waist to hip ratio(WHR)、blood pressure(Bp) were recorded. Serum Leptin、plasma glucose、insulin、total cholesterol(TC)、triglyceride(TG)、high density lipoprotein cholesterol(HDL C)、low density lipoprotein cholesterol(LDL C)、lipoprotein(a) were determined,and HOMA IR was calculated. Results: Compared to controls, serum Leptin concentration was significantly higher in metabolic syndrome〔(23.82?15.63)?g/L vs (11.20?4.70)?g/L, P

Objective To study the effects of occupational exposure to endocrine disrupters (ECDs) in plastic plants. Methods 719 female workers including observation group exposed to plastic manufacture production environment and control group not exposed to plastic manufacture production environment were selected by the cluster sampling method and were investigated using the unified questionnaire on female reproductive function. Results The observation group showed significantly higher prevalence rates of abnormal menstruation, and irregular menstrual period, menstrual cycle and menstrual quantity compared with those of control group (P

Objective To explore the effect of pyrrolidine dithiocarbamate(PDTC) on the expression of E-selectin and the activities of enzymes in oxidative stress in the pancreas of rats with severe acute pancreatitis(SAP).Methods Rat model of ASP was build by intraperitoneal injection of L-arginine(totally 5 g/kg,twice in an interval of 1 h).Thirty-six SD rats were assigned to 6 groups randomly and equally,that is,normal control,SAP,PDTC pretreatment group 1(1 mg/kg) and 2(100 mg/kg),and PDTC treatment group 1(1 mg/kg) and 2(100 mg/kg).PDTC pretreatment was preformed by subcutaneous injection of PDTC 1 h before first injection of L-arginine.For the animals in treatment groups,PDTC was given 3 h after first injection.Normal control was given intraperitoneal injection of normal saline.In 24 h after the first injection of L-arginine,the activity of myeloperoxidase(MPO),lipid peroxide(LPO) and nitric oxide synthase(NOS) were detected.Expressions of E-selectin was detected through inmmunohistochemical method,and activity of NF-?B-DNA binding were detected by electrophoretic mobility shift assay(EMSA).Results In SAP groups and PDTC pretreatment and treatment groups,the expression of E-selectin,activities of NF-?B,MPO,LPO,and inducible NOS(iNOS) were higher,but the activity of constitutive NOS(cNOS) was lower than those in the normal control(P0.05).Conclusion PDTC of 1 mg/kg can alleviate the inflammation in SAP by blocking the translocation of NF-?B,however,the 100 mg/kg PDTC shows little protection in this process.

0.05). The mortality in group A was obviously higher than that in group AI ( P

AIM　To study whether KB-R7943 has selective inhibitory effect on the inward and outward Na+-Ca2+ exchange current (INa-Ca) in guinea pig ventricular myocytes. METHODS　Through setting up the model of intracellular Na+-overload during myocardial ischemia and reperfusion, the current-voltage relationship of INa-Ca was recorded using whole-cell patch clamp technique under bi-directional ionic conditions. RESULTS Currents were elicited by a declining ramp pulse depolarized immediately from holding potential of -40 mV to +60 mV, then repolarized to -100 mV at a speed of 80 mV*s-1 and returned to the holding potential under bi-directional ionic conditions, while the ［Na+］ was 25 mmol*L-1 in the pipette solution. The currents increased time-dependently and voltage-dependently which reached from (2.51±0.15) pA*pF-1 to (5.94±0.13) pA*pF-1 at +50 mV and from (-1.92±0.13) pA*pF-1 to (-3.17±0.16) pA*pF-1 at -80 mV (n=12) after 3 min and there is no significant run-down of the current. KB-R7943 10-6 mol*L-1 was found to decrease the current to (4.62±0.05) pA*pF-1 by 29.4% at +50 mV and to (-2.30±0.18) pA*pF-1 by 22.1% at -80 mV (n=5) after 5 min. While 10-5 mol*L-1 KB-R7943 was shown to decrease the current to (3.13±0.03) pA*pF-1 by 61.7% at +50 mV and to (-1.62±0.03) pA*pF-1 by 56.9% at -80 mV (n=7). CONCLUSION　KB-R7943 can block INa-Ca in guinea pig ventricular myocytes. But, it did not show selective inhibition effect on inward and outward currents.

AIM To explore the effect of tacrolimus on maturity and allostimulatory activity of cultured dendritic cells (DC) in vitro. METHODS Twenty rats were randomly divided into 4 groups: control, tacrolimus, LPS, and tacrolimus+LPS groups. The bone marrow cells of rats were cultured with granulocyte-macrophage colony-stimulating factors and interleukin-4 (IL-4) for 6 d and the DC which adhered to the wall were harvested. No other extraneous reagents were used in control group. Tacrolimus 10 μg·L-1 was added to tacrolimus group at the beginning of culture. Lipopolysaccarides (LPS) 100 μg·L-1 were administered 18 h beforeharvest in LPS group. In tacrolimus+LPS group, tacrolimus and LPS were used in accordance with tacrolimus and LPS groups. The immunophenotypes of DC were analyzed with flow cytometry and the level of IL-12 secreted by DC was detected by ELISA. The allostimulatory activity of DC on allogeneic T cells was assessed with mixed lymphocyte reaction. RESULTS Compared with control group, LPS increased CD80 and CD86 expressions, IL-12 secretion and allostimulatory activities of DC. Compared with control and LPS groups, tacrolimus cut down the expressions of CD80 and CD86, decreased the secretion of IL-12 and reduced the allostimulatory activity of cultured DC. CONCLUSION Tacrolimus exerts a negative effect on the maturation and allostimulatory activity of cultured DC in vitro.

BACKGROUND: Immune tolerance is regarded as the most effective measure to overcome rejection. For the past few years, the important effect of immature dendritic cells (imDCs) on immune tolerance has drawn close attention. OBJECTIVE: To study the effect of imDCs treated with tacrolimus (FK506) on imlnune tolerance in rat allograft organ transplantation and to investigate the mechanism of immune tolerance induced by imDCs. DESIGN: A randomized and controlled animal experiment. MATERIALS: The experiment was carried out at the Experimental Animal Center, the Affiliated Hospital of Medical College. Qingdao University from April 2006 to December 2006.Cervical heart transplantations were performed in which 45Wister rats were used as donors and45 SD rats as allograft recipients. The ratswere randomly divided into three groups with 15 for each. METHODS: Normal sodium, imDes. and imDCs treated with FK506 were injected via vena caudalis seven. days before the operations respectively. Mixed lymphocyte reaction (MLR) was meas ured on SD, Wistar, and Lewis rats. MAIN OUTCOME MEASURES: Heart allografi survival was monitored and one-way MLR, heart pathology and the levels of interleukin-2(IL-2),IL-4,IL-10,and interferon-Y(IFN-Y)in the serum were detected. RESULTS: In treatment group without FK506.heart allografl survival were prolonged after imDC injection(P＜0.01);while their survival were prolonged further in treatment group with FK506(P＜0.05).MLR showed that the tolerance was donor specific. Analysis of variance showed that tere was high significant difference for serum concentrations of IL-2,IFN-Y,IL-4,and IL-10 in the three groups(P＜0.01).The concentrations of IL-2 and IFN-Y expressing on Th1 were lower. and that of IL-4 and IL-10 expressing on Th2 were obviously higher in the latter two groups. CONCLUSION: ImDCs can induce immune tolerance in rat heterotopic heart transplantation successfully; ImDCs treated with FK506 can enhance the tolerance which is donor specific.ImDCs may induce the immnune tolerance bymeans of modifying the immune response type of T cells (immune deflection from Th1 to Th2), mediating the generation of regulatory T cells (T-reg)and inducing T cells disenabling.

13.1mmol/L were treated by 2 weeks short-term intensive insulin treatment. FBS, Fasting blood insulin(FINS), glycosylated hemoglobin A1c (HbA1c), 2 hours postprandial blood sugar(PBS 2), Homa ? and Homa IR were measured and compared between pre-treatment and post-treatment. Results After 2 weeks short-term intensive insulin treatment, the excellent control of FBS, PBS 2 in 23 out of 27 patients were achieved respectively in (5.6?2.3)days and (8.5?3.5)days. Homa ? significantly increased, and HbA1c and Homa IR decreased comared with pre-treatment. Conclusions The excellent glycemia control and improvement of ?-cell function can be induced by short-term intensive insulin treatment in newly diagnosed type 2 diabetic patients with severe hyperglycemia.