Objective To study the interactive effects of fluorine,calcium and iodine on thyroid SOD,CAT and MDA of rats.Methods Based on 2?2?2 factorial design,80 Wistar rats were randomly divided into 8 groups and diet with different ingredients: ① moderate concentrations of fluorine(F),calcium(Ca) and iodine(I)(NF,NCa,NI);② moderate concentrations of F,I and high concentration of Ca(NF,NI,HCa);③ moderate concentrations of Ca and I and high concentration of F(NCa,NI,HF);④ moderate concentration of I and high concentrations of F and Ca(NI,HF,HCa);⑤ moderate concentrations of F and Ca and low concentration of I(NF,NCa,LI);⑥ moderate concentration of F,high concentration of Ca and low concentration of I(NF,HCa,LI);⑦ moderate concentration of Ca,high concentration of F and low concentration of I(NCa,HF,LI);and ⑧ high concentrations of F and Ca and low concentration of I(HF,HCa,LI).The moderate concentration of F was 90?g/d,and the high concentration of F was 30 times that of moderate concentration.The moderate concentration of Ca was 13mg/d,the high concentration of Ca was 20 times that of moderate concentration.The moderate concentration of I was 3.5?g/d,i.e.15 times that of low concentration.After six months,the activities of SOD and CAT,and the content of MDA in the thyroid were determined by xanthine oxidase method,visible spectrophotometry and colorimetry.Results According to the results of factorial ANOVA,the significant interaction of F with I on SOD was found(F=3.97,P=0.05).The activity of SOD in ⑤ group was significantly higher than that in ① group(t=2.36,P=0.03).The activity of SOD in ⑥ group was higher than that in ② group(t=-3.04,P=0.01).The activity of SOD in ⑧ group was lower than that in ⑦ group(t=2.36,P=0.03).The activity of SOD in ④ group was higher than that in ② group(t=-2.91,P=0.01).A significant interaction of fluorine,calcium with iodine to CAT was found(P

Objective To study the dose-dependent effect of sodium arsenite on the expression of p53 gene in human embryonic lung fibroblasts(HELF)in vitro.Methods The human embryonic lung fibroblasts were divided into four groups in vitro based on completely randomized design.The expression of p53 mRNA was detected by real-time PCR and the expression of p53 protein was detected by immunohistochemical SAB,respectively,in human embryonic lung fibroblasts which were exposed to different doses(0,3,9 and 15?mol/L)of sodium arsenite for 24 hours.The one-way analysis of variance and post hoc comparisons were performed for testing the differences among groups and the linear correlation was for testing correlation between doses and the expression of p53 gene.Results Compared with that of exposure to 0?mol/L sodium arsenite,the expression of p53 mRNA in HELF was increased significantly(P0.05).The p53 mRNA expression was increased in dose-dependent manner with the increased concentration of sodium arsenite(r=0.947,P

Objective To evaluate on novitiate of medical students in center of disease control and prevention(CDC).Methods Junior medical students of Grade 2007 were selected randomly by Cluster sampling method and classified into teaching reform group(novitiate in CDC,n=79) and control group.Traditional lecture and discussion were used in the laboratory of the school to 98 students of the control group,while 79 students of the teaching reform group became CDC trainees.Questionnaire and qualitative interviews were used to evaluate the trainees' preventive medicine cognition,their interest and employment intention.Questionnaire data was proofread and entered in EPIdata (version 3.1),and was analyzed by using Statistical Package for Social Sciences(SPSS version 17.0),and ratio or rate between groups were compared by x2 test,and scores of two groups were compared by using Wilcoxon test.Results In teaching reform group,rate of H1N1 correctly classified as category B was 76.0％,score of knowledge of Programme on Immunization,knowledge of H 1N 1 reporting procedures,knowledge of DOTs strategy,knowledge of chronic non-communicable disease management,and self-interest in preventive medicine was 4.0,4.0,3.0,5.0 and 4.0(points) respectively,and the proportion of regarding CDC as an employment options was 73.3％,respectively higher than 40.4％,2.9,2.9,2.0,4.0,3.8 points and 28.7％ in control group(all P＜0.05).Conclusion Novitiate in CDC is helpful to increasing students' interest in learning preventive medicine,learning knowledge of preventive medicine,and changing employment concept.

In contemporary studies of pulse and of the relationship between sphygmo-diagram and syndrome types or diseases, pulse instrument is usually applied to trace the sphygmo-diagram. A comparatively systemic theory about pulse diagnosis has been formed, and it promotes the pulse researching process. But the mechanism of pulse is complicated and the expressive information of pulse is diversity. So it is difficult to record the complicated information of pulse by applying the instrument. In addition, the simplicity in methods of tracing and analyzing sphygmo-diagram and the lack of criterion for syndrome differentiation make it difficult to study the relationship between the sphygmo-diagram and the syndrome types. It's important to lay stress on clinical applying, to promote communication among researchers, to unify the standards of pulse instrument and syndrome differentiation, and to reinforce the research on the relationship between sphygmo-diagram and the syndrome types. The government's support is also needed to promote multi-science cooperation at the same time.

Cancer-related fatigue (CRF) is a common symptom which associated with cancer itself or cancer treatments. CRF will not only interrupt the patient's treatment, but also affect the patient's quality of life seriously. To date, the pathogenesis of CRF is still unclear, and recognized effective treatment is lacking. It is the precondition of establishing standardized animal models for CRF to find effective treatments. This paper summarizes the animal model of CRF in order to find suitable methods, and distinguish the effects of different interventions.

Objective To evaluate the curative effect and feasibility of catheter-directed thrombolysis with urokinase for acute limb ischemia. Methods The clinical data of a total of 21 patients with acute limb ischemia, who were treated with infusion of urokinase through UniFuse thrombolytic catheter, were retrospectively analyzed. The clinical curative efficacy, prognosis and complications of catheter - directed thrombolysis (CDT) were summarized. Results In all patients, thrombolysis therapy was effective, the clinical symptoms were alleviated, and successful limb salvage was achieved. One patient died of cerebral hemorrhage due to renal decompensation. No other serious complications such as hemorrhage, hematoma or disability occurred. Conclusion Preliminary clinical study shows that CDT with urokinase is effective and safe for the treatment of acute limb ischemia. This therapy can help reduce unnecessary surgical procedures or stent implantation, and the risk of thrombolysis is controllable. (J Intervent Radiol, 2018, 27: 262-265)

Objective To explore the relationship between obesity and serum testosterone level among community adult males.Methods The stratified cluster sampling method was adopted to extract 1 166 male residents aged 20 years old and over in Zunyi City and conduct the questionnaire survey and physical examination.Fasting venous blood samples were collected for detecting the serum total testosterone(TT),sex hormone binding globulin(SHBG) and luteinizing hormone(LH).Then free testosterone index(cFT),free testosterone index(FTI) and testosterone secreting index(TSI) were calculated.Results The average levels of serum TT,SHBG,cFT,FTI,TSI and LH in 1 166 adult males were(16.83±4.90)nmol/L,(42.15 ± 20.21)nmol/L,(0.31 ±0.10)nmol/L,(0.46 ± 0.19) IU/L,(3.40 ± 2.04) IU/L and(6.77 ± 5.14) IU/L respectively;the Pearson correlation analysis showed that WHtR,BMI and WC were negatively correlated with TT,SHBG,TSI and LH,and were positively correlated with FTI,WHtR was negatively correlated with cFT,BMI and WC were negatively correlated with LH,the differences were statistically significant(P＜0.05).The multivariate linear regression analysis shown that WHtR was negatively correlated with TT,SHBG,TSI and LH;and was positively correlated with FTI,the differences were statistically significant(P＜0.01).Conclusion Adult male central obesity may be associated with the decrease of serum TT,SHBG,TSI and LH levels,and increase of FTI level.

OBJECTIVE:To establish the method for the content determination of L-Hyp and collagen in gelatinous medicinal material,and to compare the contents of two components in reference medicinal material and commercially available medicinal material.METHODS:Pre-column derivatization was adopted for pretreatment.The content of L-Hyp was determined by HPLC.The determination was performed on Kromasil C18 column with mobile phase consisted of acetonitrile-0.1 mol/L sodium acetate buffer (pH 6.5,7 ∶ 93,V/V)-acetonitrile-water (4 ∶ 1,V/V) (gradient elution) at the flow rate of 1.0 mL/min.The detection wavelength was set at 254 urn,and column temperature was set at 43 ℃.The sample size was 20 μL.The content of collagen was calculated by using convert coefficient.RESULTS:The linear range of L-Hyp were 2.5-40 μg/mL(r=0.999 9).LOQ was 0.20 μg/mL,and LOD was 0.05 t g/mL.RSDs of precision,stability and reproducibility tests were all lower than 4.0％.The recoveries were 96.03％-102.07％ (RSD =2.20％,n =9).There was difference in the contents of L-Hyp and collagen among 28 batches of commercially available medicinal material.The contents of two components in 13 batches of commercially available Colla Corii Asini were relative close to reference medicinal material;5 batches of Colla Carapacis et Plastri Testudinis and 7 batches of Cervi Comus Colla were much higher than those of reference medicinal material.CONCLUSIONS:The method is accurate,reliable and suitable for the content determination of L-Hyp and collagen in gelatinous medicinal material.

Objective: To analyze perioperative serum high mobility group box-1 protein (HMGB1) levels in patients with acute cholangitis and its clinical significance. Methods: 118 cases of choledocholithiasis with acute cholangitis were retrospectively analyzed, admittd in Minhang Hospital from Jan 2017 to Dec 2017. Enzyme linked immunosorbent assay (ELISA) was used to detect serum HMGB1 levels before and after ERCP. The relationship between serum HMGB1 levels and severity of the disease was analyzed. Results: The serum HMGB1 levels in the healthy controls, mild cholangitis group, moderate cholangitis group and severe cholangitis group were(1.74±0.79) μg/L, (9.19±4.86) μg/L, (12.62±4.13) μg/L, (18.02±3.84) μg/L, respectively. The serum HMGB1 levels were significantly different in these four groups (F=63.348, P<0.05). The serum HMGB1 levels in the three groups after ERCP were significantly lower than those before ERCP(t=10.978, t=35.682, t=42.649; P<0.05). The serum HMGB1 levels were positively correlated with WBC, CRP, total bilirubin, direct bilirubin and alanine aminotransferase. Conclusion Serum HMGB1 levels were significantly higher in patients with acute cholangitis, and the more serious the disease, the higher the HMGB1 levels. After ERCP, serum HMGB1 levels were significantly lower than before. HMGB1 is an effective parameter for evaluating the severity of acute cholangitis.