Objective To compare the feasibility and efficacy of PPSF with OPSF for thoracolumbar fractures.Methods We searched the PUBMED,OVID and Cochrane CENTRAL databases through Jan 2014.All of the clinical trials included were extrac-ted and evaluated by two reviewers independently.Data were analyzed using RevMan 5.2.6 software by the Cochrane Collabora-tion.Results Seven studies including 353 patients met the inclusion criteria.The Meta analysis found there were significant differ-ences between the two procedures in intraoperation blood loss (RR = 1.89,95%CI :1.55 - 2.29,P < 0.05)and operation time (RR=1.21,95%CI :1.12-1.30,P <0.05).For the correction of sagittal Cobb′s angle and the anterior vertebral body height,a-nalysis did not find any significant difference between the PPSF and OPSF(P >0.05).Conclusion Both PPSF and OPSF are safe and efficacious internal fixation methods for treating thoracolumbar fractures,while,PPSF may cause less blood loss and cost less time.

Objective To explore the effect of beraprost sodium (BPS) on hypoxia-induced pulmonary artery hypertension (HPH) in rats and the expression of oxygen-sensitive Kv channels in pulmonary artery smooth muscle (PASM).Methods The HPH model of rats was established by exposing rats to low-pressure and low-oxygen cabin which was auto-modulated for 8h every day.Rats in the BPS group were given an intragastric administration of BPS [300 μg/(kg · d)],while those in the control group and HPH group were given an intragastric administration of 3 ml/kg of 0.9％ saline.After 4 weeks,the mean pulmonary artery pressure (mPAP) was measured and right heart ventricle hypertrophy index (RVHI) was calculated;pulmonary artery remodeling was evaluated by HE staining;the expressions of Kv 1.2,Kv 1.5 and Kv2.1 in the pulmonary artery were detected by Real-time PCR and Western blot.Results The HPH model was successfully established in rats exposed to chronic hypoxia for 4 weeks.Compared with those in HPH group,mPAP,RVHI and pulmonary artery remodeling were decreased in BPS group [mPAP:(13.48±2.18)mmHg vs.(23.87±2.23)mmHg vs.(17.09±1.20)mmHg;RVHI:0.28±0.02 vs.0.46±0.03 vs.0.36±0.04;％ area of medial smooth muscle:35.72±6.58 vs.68.52±5.64 vs.46.58±8.43;P＜0.05],and the mRNA and protein expressions of Kv 1.2,Kv 1.5 and Kv 2.1 were increased (relative protein expression level:Kv1.2,0.78±0.10 vs.0.15±0.03 vs.0.57±0.13;Kv1.5,0.61±0.10 vs.0.31±0.05 vs.0.59±0.13;Kv2.1,0.29±0.05 vs.0.10±0.02 vs.0.28±0.07;P＜0.05).Conclusion BPS can improve pulmonary arterial hypertension induced by hypoxia,and upregulate the decreased mRNA and protein expressions of Kv 1.2,Kv 1.5 and Kv 2.1 in pulmonary artery.

Objective To evaluate the value of dual‐Doppler imaging technology (referred to as dual‐Doppler modality for short) in assessing left ventricular diastolic function in patients with atrial fibrillation (AF) and normal left ventricular ejection fraction (LVEF) .Methods A total of 40 patients with AF and normal LVEF were enrolled as the AF group ,and 40 healthy volunteers were composed of the control group .①Peak early diastolic transmitral flow velocity (E) and tissue Doppler lateral (L ) mitral annular early diastolic velocity (e′) were measured simultaneously in the particular cardiac cycle by dual‐Doppler modality .②Peak early diastolic transmitral flow velocity (E) and tissue Doppler septal (S) mitral annular early diastolic velocity (e′) were measured simultaneously in the particular cardiac cycle .③ Peak early diastolic transmitral flow velocity (E) and color M‐mode Doppler flow propagation velocity (Vp) were measured simultaneously in the particular cardiac cycle .Then E/e′(L) ,E/e′(S) and E/Vp were calculated , respectively .Results Compared to the control group ,E/e′(L) ,E/e′(S)and E/Vp were all higher in AF group ( P <0 0.5) .Bland‐Altman showed that E/e′(L) ,E/e′(S)and E/Vp measured by the dual‐Doppler modality had better reproducibility and higher intraclass correlation coefficient (ICC) than the conventional Doppler modality .Conclusions The dual‐Doppler modality is valuable for evaluating left ventricular diastolic function in patients with AF and has better reproducibility and more accurate results than the conventional Doppler modality .

Objective To observe the effect of MnCl2 on glutamate-glutamine cycle(Glu-Gln cycle) and apoptosis of dissociated striatum cells and to approach the antagonism of riluzole to the neurotoxicity of MnCl2.Methods Twenty-seven Wistar rats were randomly divided into 3 groups, 9 in each.The first group was the control group and the second group was the single MnCl2 exposure group.Both of the groups were injected with 0.9% NaCl subcutaneously(sc).The third group was the intervention group and was injected with 21.35 ?mol/kg riluzole(sc).Two hours later, the rats in the control group were the given 0.9% NaCl intraperitoneally(ip) injection, the second and third groups were injected with 200 ?mol/kg MnCl2(ip), five times a week, for 4 weeks.Twenty-four hours after the last injection, 6 rats in each group were killed and the contents of Glu and Gln, the activities of glutamine synthetase(GS) and phosphate activated glutaminase(PAG) in the striatum of the rats were determined.The apoptosis of the dissociated striatum cells was detected in the other rats in each group by flow cytometry(FCM) technique.Results Compared with the control group, in MnCl2 group, the content of Glu increased and Gln content decreased significantly(P

OBJECTIVE: To observe the regulatory effect of SNMC on the gene expression of the Smad family in pulmonary fibrosis model rats.METHODS: A total of 174 rats were assigned to 6 groups: normal group,model group,positive prednisolone acetate group,SNMC(20,15,10 mL?kg-1?d-1) groups,with the latter 5 groups treated with bleomycin injection to induce pulmonary fibrosis model.At 24 h after modeling,the rats in 6 groups were treated with corresponding drugs day by day before being sacrificed at 1,12,28 days after first-time treatment for extracting of RNA from pulmonary tissues.The expression levels of Smad3,Smad4 and Smad7 were assayed by RT-PCR respectively.RESULTS: As compared with model group,the expression levels of Smad4 and Smad7 genes were down-regulated but the expression level of Smad3 gene was up-regulated in SNMC groups,whereas the expression levels of 3 kinds of genes were all down-regulated in positive prednisolone acetate group.CONCLUSION: SNMC is more effective than prednisolone acetate in reversing the abnormal expression of Smad family in pulmonary fibrosis model rats.

(0.05)). Multivariate analysis revealed that adjuvant radiotherapy and histology of tumor significantly affected the prognosis(P=(0.045) and P=(0.009), respectively). Whereas loco-regional control was only significantly affected by adjuvant radiotherapy(P=(0.000)). CONCLUSION: Adjuvant radiotherapy and histology of tumor are the important prognostic factors in the rectal cancer patients after treatment with multimodality therapy based on surgery.

Objective:To study the effect of applying different teaching methods about mechanism of labor.Methods:Selecting the second class of nursing speciality as a experiment group,the third class as a control group.Results:The experiment group's records was highter than the control group's,the differences between the two groups were statistically significant(P

Objective To evaluate the efficacy and safety of radioactive 125 I seed implantation combined with paclitaxel (PTX) for treating senile non‐small cell lung cancer(NSCLC) .Methods The clinical data in 35 patients with NSCLC in our hospi‐tal from June 2013 to August 2014 were retrospectively analyzed ,including 12 cases receiving the lung tumor radioactive 125 I seed implantation therapy(group A) ,10 cases treated with PTX combined with cisplatin (TP scheme)after receiving radioactive 125I seed implantation therapy(group B) and 13 cases only conducted TP scheme(group C) .The 21 d chemotherapy was a evaluation cycle . The adverse reactions were evaluated after 1 cycle and the curative efficacy was evaluated after 2 cycles .Results Thirty‐five cases were followed up for 6 months .The adverse reactions could be evaluated in all the cases .The short‐term efficacy could be evaluated in 34 cases .The group A had no obvious adverse reactions ,the main adverse reactions in the group B and C were bone marrow sup‐pression and digestive tract reactions without statistically significant differences (P> 0 .05) .The effective rates after 4 cycles of chemotherapy in the group A and B were 66 .7% and 80 .0% ,the clinical benefit rates were 83 .3% and 90 .0% respectively ,which were higher than 23 .1% and 53 .8% in the group C respectively ,the differences were statistically significant ( P< 0 .05 ) . Conclusion Radioactive125 I seed implantation therapy and PTX combined with radioactive 125 I seed implantation for treating senile early NSCLC are superior to the simple PTX chemotherapy ,which have high effective rate and benefit rate ,safety ,mini‐invasion and mild adverse reactions ,and can increase the patient′s living quality .

OBJECTIVE:To observe the antagonistic effect of compound glycyrrhizin on bleomycin A5-induced pul-monary fibrosis of rats.METHODS:Pulmonary fibrosis model was built by injecting bleomycin A5to tracheas of SD rats in one time,the next day,control groups were administered with compound glycyrrhizin and prednisolone acetate,21days after administration,organ coefficients,pathology,areas of alveolar septum,areas of the inflammatory cells and the integral pho-todensity of the pulmonary tissues were detected and analyzed.RESULTS:As compared with the model group,the compound glycyrrhizin group had a diminished organ coefficient,ameliorated pathological change for pulmonary tissues and reduced areas of alveolar septum(P0.05).CONCLUSION:Compound glycyrrhizin has antagonistic effect on pulmonary fibrosis of model rats.

Objective To investigate the effect of ischemic preconditioning ( IP) on the content of myocardial mitochondria cardiolipin and the heart function in isolated rat hearts. Methods Seventy-two healthy SD rats of both sexes ( 36 males,36 females) weighing 200 to 300 g were randomly divided into 4 groups ( n =18 for each group) : normal group,control group,IP group ( IP) and 5-hydroxydecanoate ( 5-HD) plus IP group ( HD) . Langendorff apparatus were used to establish the model of ischemia/reperfusion in isolated rat hearts. The hearts were perfused for 20 min to get stabilization followed by continuous perfusion in normal group for 100 min. In control group,after perfusing of 20 min for stabilization followed by continuous perfusion for 30 min,the hearts were then reperfused for 30 min after 40 min ischemia. In IP group,the hearts were given a 5-minute ischemia and 5-minute reperfusion for twice in order within a brief intermittent period,and ischemia reperfusion was carried out in the same way as that in control group. In HD group,the hearts were perfused with 100 ?mol/L 5-HD before IP,and the following procedures were carried out as those in IP group. HR,left ventricular end-diastolic pressure ( LVEDP) ,left ventricular developed pressure ( LVDP) were recorded at the end of stable perfusion ( T1) ,immediately before ischemia ( T2) and at the end of reperfusion ( T3) in all the groups. The content of myocardial mitochondria cardiolipin was measured with HPLC. Results When theparameters at T3 were compared with those at T1 and T2,HR and LVDP were decreased,LVEDP was increased and the content of myocardial mitochondria cardiolipin was decreased. All these changes were significant ( P