Objective Through the English newspaper reading activities to create the information transmission platform based on the medium of English,so as to improve the students' ability of receiving,understanding,conversion,processing,and output information.Methods Two natural classes of seven-year program students of Grade 2011 with no difference in Englishproficiencywere selected at randomas control group(30) and the experimental group(30).And reform on reading course has been performed in the experimental class by incorporating English newspaper reading into traditional teaching routine,while the control class maintain the traditional teaching routine.After the teaching,through CET 4 test scores to evaluate the teaching effect.Independent t-test was conducted on the performances of CET 4 between the experimental class and controlled class with the level of test α=0.05.Results The control group was higher than the experimental group inthe total scoreof CET 4 and the performance oflistening and reading,and there was significant difference between the two groups(P of totalscore=0.000,P of listening score=0.002,P of reading score=0.001).But there was no statistically significant difference in writing subtests between the two groups(P=0.072).Conclusion By adopting English newspaper reading and broadcasting in class,students' overall ability of using English has been greatly enhanced,especially the listening comprehension and reading comprehension; however,there is no significant change in the development of students' writing ability due to the tasks designed.

Objective To study the contents and distribution characteristics of trace elements in Chrysanthemum morifolium from different areas. Methods The contents of 13 trace elements in six samples of Chrysanthemum morifolium were determined by ICP-OES. The principal component analysis combined with SPSS 19. 0 software was applied to evaluate charac-teristics of elements Results Curves of trace element content of Chrysanthemum morifolium from different origins had a certain similarity. The contents of Fe, Zn and Mn were higher than others. The results of principal component analysis showed that five principal components were extracted from six samples of Chrysanthemum morifolium, and Cd, Cu, Zn, Ba and Co was the characteristic trace elements. Conclusion The contents and distribution of trace elements can reflect the characteristics of Chrysanthemum morifolium from different areas, which could be used for Chrysanthemum morifolium quality assessment and classification.

Objective To study the expression of hypoxia-inducible factor-1 (HIF-1) in the brain tissue after the brain injury caused by acute organophosphate poisoning,and the interventional effect and mechanism of hyperbaric oxygen (HBO) therapy.Methods Sixty healthy male Sprague-Dawley rats randomly divided into a control group (n=6),a poisoning group (n=18),a routine group (n=18) and an HBO group (n=18) according to a random number table.Acute organophosphate poisoning was induced into all rats except those in the control group.The routine group was given penehyclidine hydrochloride and pralidoxime chloride for once,while the HBO group was provided with HBO therapy immediately on the basis of routine treatment.At 1,3 and 7 hours after acute organophosphate poisoning was induced,six rats were sacrificed at each time point and the blood samples were taken from inferior caval vein to measure the content of Malondialdehyde (MDA).The expression of HIF-1α mRNA in the brain tissue was detected by the quantitative real-time PCR,and that of HIF-1 protein was evaluated by immunohistochemical method.Meanwhile,pathologic changes of the brain tissues were observed using hematoxylin-eosin (HE) staining.Results Compared with the poisoning group,the pathological damage to cerebral tissues lessened in the HBO group.The expression of HIF-1 protein and HIF-1 mRNA of the poisoning and the HBO groups was significantly higher than the control group at 3 different time points.After the HBO treatment,the protein expression of HIF-1 lowered from 226.57 ± 57.49,to 205.91 ± 30.36 and further to 187.67 ± 29.25,while the MDA content decreased from 7.74 ± 0.14,to 7.40 ± 0.13 and later to 6.10 ±0.08,both were significantly lower than those of the poisoning group at all time points,with HIF-1 being 1305.67 ± 167.17,2667.83 ± 367.79 and 1709.24 ± 199.07,along with MDA content being 9.48 ± 0.05,11.56 ± 0.13 and 12.26 ± 0.14,and those in the routine group at the time points of 1 and 3 hour later (P ＜ 0.05).A positive correlation was found between the expression level of HIF-1 mRNA and level of MDA in the serum (r =0.909,P=0.000).Conclusion HIF-1 plays an important role in the development of brain injury caused by acute organophosphate poisoning.The efficacy of hyperbaric oxygen intervention against AOPP-induced brain injury is better than that of the routine treatment and its mechanism may be its antioxidation and inhibition of HIF-1 expression.

[Objective] To determine dormancy mechanism of Taxus mairei(Lemee et Levl.) S.Y.Hu ex Liu Seeds,the best method of dormancy breaking.[Method]The seeds were handled by lotic water or excitatory autacoid or cold-warm-cold stratification treatment or cold-warm-cold stratification treatment with excitatory autacoid,then compare withgermination inhibition of Brassica campestris seeds handling with water solution from the seeds after four dormancy breaking methods,to dertemine the best dormancy breaking method.[Conclusion] The best damancy breaking method was cold(4℃)—warm(23℃)—cold(4℃) stratification treatment with 0.05% gibberellic acid for 120 days.

Objective To investigate the effects of omega-3 polyunsaturated fatty acids (ω-3 PUFA) supplementation on neuron apoptosis,brain edema,activation of microglia,inflammatory response and neural function after traumatic brain injury (TBI) in rats,so as to understand the protection of ω-3 PUFA in rats following TBI and its mechanism.Methods TBI model was established using Feeney's method.Ninety SD rats were randomly divided into 5 groups:sham operation group (sham group),TBI group,TBI + selective activator of c-Jun N-terminal kinase (JNK) anisomycin group (TBI + Aniso group),TBI + ω-3 PUFA supplementation group (TBI + ω-3 group),and TBI + ω-3 PUFA supplementation + JNK activation group (TBI + ω-3 + Aniso group).We measured rat behavioral outcomes by modified neurological severity score (mNSS) on day 1,3,and 7 after TBI.Brain water content was measured with wet-dry weight method.The neuron apoptosis and microglial activation (identified by specific marker IBA-1) in TBI cerebral cortex were determined by TUNEL staining and immunofluorescence.Inflammatory cytokines [tumor necrosis factor-α (TNF-α),interleukin (IL)-1α,IL-1β,and IL-6] and the JNK signaling pathway (JNK,pJNK) were tested with reverse transcription-polymerase chain reaction and Western blot,respectively.Results Compared with the sham group,the levels of brain cell apoptosis,brain edema,neuron apoptosis,and inflammatory-relatived factors (TNF-α,IL-1 α,IL-1β,and IL-6) were significantly increased in the other four groups (P ＜ 0.05).Compared with the TBl group,ω-3 PUFA supplementation reduced brain water content following TBI,especially on day 3 after TBI [(78.14 ± 0.57) ％ vs.(82.31 ± 0.81) ％,P ＜ 0.01],and improved neurological function score (P ＜ 0.05).Meanwhile,ω-3 PUFA supplementation suppressed neuron apoptosis,the activation of microglia,and the mRNA and protein expressions of inflammatory cytokines (TNF-α,IL-1α,IL-1 β,IL-6).The activation of JNK signaling pathway was also inhibited by ω-3 PUFA.Conclusion ω-3 PUFA supplementation may markedly reduce brain edema,suppress neuron apoptosis,and improve neurological outcomes after TBI in rats,possibly mediated by inhibiting JNK signaling pathway and microglial activation,reducing microglia-induced cerebral inflammatory responses,demonstrated as down-regulated expression of TNF-α,IL-1α,IL-1β,and IL-6.

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OBJECTIVE:To investigate the effects of target-controlled infusion of etomidate combined with remifentanil on in-dexes of immune and stress response in elderly surgery patients. METHODS:Totally 60 patients undergoing elective surgery were randomly divided into control group(n=30)and observation group(n=30). Control group was given Propofol injection 1.5-2 mg/kg intravenously. Observation group was given Remifentanil hydrochloride for injection with pump volume of 0.5 μg/(kg·min), and then target controlled infusion of Etomidate injection 0.1-0.3 mg/kg;the dose of etomidate increased by 0.05-0.1 mg/kg accord-ing to physical activity during surgery. Postoperative eye opening time,recovery time of orientation and extubation time were com-pared between 2 groups as well as the levels of immune indexes(CD4+,CD8+,CD4+/CD8+),stress response indexes [serum norepi-nephrine(NE),adrenaline(E)and cortisol(Cor)]. The occurrence of ADR was recorded during surgery. RESULTS:Postopera-tive eye opening time,recovery time of orientation and extubation time in observation group were significantly shorter than control group,with statistical significance(P<0.05). Before surgery,there was no statistical significance in CD4+,CD8+ and CD4+/CD8+between 2 groups(P>0.05). After surgery,CD4+ and CD8+ of 2 groups were significantly higher than before surgery,and the ob-servation group was significantly higher than the control group,CD4+/CD8+ of 2 groups was significantly lower than before,and the observation group was significantly lower than control group,with statistical significance(P<0.05). Before surgery,there was no statistical significance in the levels of NE,E and Cor between 2 groups(P>0.05);after surgery,the levels of NE,E and Cor in 2 groups were significantly higher than before surgery,but the observation group was significantly lower than the control group, with statistical significance(P<0.05). There were no obvious adverse reaction occurred in 2 groups during the surgery. CONCLU-SIONS:The target-controlled infusion of etomidate combined with remifentanil is ideal for perioperative anaesthesia in the elderly patients and effectively improves related immune indexes and stress response indexes with good safety.

OBJECTIVE:To explore the clinical efficacy and safety of cetuximab combined with NP regimen and radiotherapy in the treatment of advanced non-small cell lung cancer(NSCLC). METHODS:76 cases of advanced NSCLC were selected and randomly divided into control group and observation group according to different therapy methods,with 38 cases in each group. Control group received NP regimen(cisplatin 25 mg/m2+navelbine 12.5 mg/m2)+thoracic IMRT;observation group was additional-ly given cetuximab 400 mg/m2(first day),with maintenance dose of 250 mg/m2 weekly and last for 13 weeks. Short-term efficacy, survival situation were compared between 2 groups as well as the levels of T lymphocyte,Th1,Th2,immuneglobulin(Ig) and complement. The occurrence of ADR was recorded. RESULTS:The total effective rate of observation group was 86.84%,which was significantly higher than that of control group(65.79%),with statistical significance(P<0.05). Average survival period and 2-year survival rate of observation group were 18.70 months and 55.26%,which were significantly longer or higher than those of control group (14.75 months,31.58%),with statistical significance (P<0.05). The improvement rate of survival quality was 94.74% in observation group,which was significantly higher than 68.42% in control group,with statistical significance (P<0.05). After treatment,the levels of CD4+,CD4+/CD8+ and IgG were significantly increased in 2 groups,while the levels of CD8+, Th1,Th2 and Th1/Th2 were significantly decreased;the observation group was better than the control group,with statistical signifi-cance(P<0.05);there was no statistical significance in the levels of CD3+,IgA,IgM and complement 4 between 2 groups(P>0.05). There was no statistical significance in the incidence of ADR between 2 groups (P>0.05). CONCLUSIONS:Cetuximab combined with NP regimen and radiotherapy can improve clinical efficacy of advanced NSCLC,improve survival quality,prolong survival time and promote the recovery of Ig,complement and T lymphocyte,with good safety.

Purpose:To study the efficacy and safety of nedaplatin alone in treating drug resistant non small cell lung cancer and nasopharyngeal cancer.Methods:From June 2000 to March 2002,9 cases who were re treated non small cell lung cancer or nasopharyngeal cancer received nedaplatin chemotherapy. Nedaplatin was administered at a dose of 100mg/m 2 with 500 ml of saline by slow drip infusion for 120 minutes, at intervals of 3 4 weeks. Results:9 patients were studied, and 9 patients were evaluable. Among of them, 6 patients were nasopharyngeal carcinoma, a partial remission (PR) was observed in 2 patients, and a complete remission (CR) was observed in 1 patient. Partial response rate was 50% (3/6); 3 patients were non small cell lung cancer; partial response rate was 33.3%(1/3).The dose limiting toxicity of nedaplatin is thrombocytopenia and ieucocytopenia. Renal toxicity was not observed and gastrointestinal toxicity was mild.Conclusions:Nedaplatin is efficacious for DDP drug resistant nasopharyngeal carcinoma and non small cell lung cancer, and most patients whose tolerated the drug well. [

Objective To investigate the effects of insulin-like growth factor-1（IGF-1）on the cell proliferation of human non-small-cell lung cancer（NSCLC） and the possible molecular mechanism.Methods MTT assay was used to examine the effects of IGF-1 （0.1,1,10,100 ng/mL）on the cell proliferation of NSCLC cell lines（A549,LK2,H460）,Flow cytometry（FCM）and Western blot to ana-lyze the cell cycles and the protein expression of S-Phase Kinase-Associated Proteins 2（Skp2）and CDC20 homolog 1（CDH1）,respectively.Results The cell proliferation of NSCLC cell lines（A549,LK2,H460）could be promoted by the IGF-1 at different concentrations and the proliferation rate peaked when the cells were treated with 1 ng/mL IGF-1.Compared with control,the percentage of the S-phase cell population was significantly increased after the treatment of IGF-I（P 〈 0.01）and the protein expression of SKP2 also increased obviously（P 〈0.05）.However,there was no change in the CDH1 protein expression（P 〉 0.05）.Conclusion IGF-1 may accelerate the cell-cycle pro-gression of NSCLC cells by negatively modulating p27 protein via the up-regulation of SKP2 protein expression.