Aim To investigate the effect of resveratrol (Res)on septic mice and LPS-insulted H9c2 cells,as well as its involved mechanisms.Methods By use of a mouse cecal ligation and puncture-induced septic model (CLP),the survival of septic mice was evalua-ted after resveratrol treatments.H9c2 cells were insul-ted by LPS and then treated with resveratrol,the mR-NA expressions of TNF-α,SIRT1 and other class III HDAC members were detected using RT-PCR and real-time PCR,Finally,the protein levels of nuclear p65, an important subunit of NF-κB,were measured in H9c2 cells using Western blot assay,to reveal the effect of resveratrol on LPS-induced nuclear transloca-tion of NF-κB.Results Compared with the control septic animals,intraperitoneal injection of resveratrol (1 or 5 mg·kg -1 ·d -1 )significantly increased the survival of septic mice.Furthermore,resveratrol signif-icantly increased mRNA expressions of SIRT1,SIRT2, SIRT6 and SIRT7 in LPS-insulted H9c2 cells.Res-veratrol also remarkably inhibited LPS-induced nuclear translocation of NF-κB.Conclusion An appropriate dose of resveratrol protects septic mouse hearts from the injury induced by LPS through the activation of SIRT family members and the inhibition of NF-κB pathway.

Animals ; Apoptosis ; Cell Hypoxia ; Cell Proliferation ; Cells, Cultured ; Hydrogen-Ion Concentration ; Muscle, Smooth, Vascular ; cytology ; Myocytes, Smooth Muscle ; cytology ; Oxygen ; metabolism ; Rats

Objective Assess the value of pleura sliding sign with chest ultrasonography in the prediction of pleura adhesion prior to video-assisted thoracoscopic surgery(VATS).Method 63 patients were evaluated for pleura sliding signs with chest ultrasonography at 9 points along the chest wall prior to thoracotomies and were compared with the findings of the same points during the operation.Methods Pleura sliding signs on 567 points were examined in 63 cases,and 106 points pleura adhesion were found by chest ultrasonography and 72 points were proved by operations.461 points were no pleura adhesion under chest unltrasonography and 495 points had no pleura adhesion confirmed by operations.Results The sensitivity,specificity,negative predictive value,positive predictive value and overall accuracy were 80.56%,90.03%,96.96%,54.72% and 9.07%,respectively.The Receiver Operating Characteristic(ROC)curve showed that there should be no pleura adhesion if there were more than 8 points positive pleura sliding signs.Conclusion Examination of pleura sliding sign by chest ultrasonography is helpful to predict the presence and location of pleura adhesion prior to VATS.

Objective To develop a scale to measure three representative real relationships of undergraduates (parent-child relationship,collegemate relationship and teacher-student relationship) and test its validity and reliability(multi-interpersonal dynamics questionnaire for undergraduates,MIDQ-U).Methods A total of 1 310 students were conveniently sampled as respondents to analyze validity and reliability indexes.Result Three relationships share four factors for interpersonal dynamic characteristics:closeness,indifference,independence and submissiveness.The revised MIDQ-U composed of 26 items to separately measure characteristics of three relationships both separately and together.The factor loading of items in parent-child relationship scale were 0.41-0.73 and 50.71％ of the variances could be explained,while eollegemate relationship 0.41-0.72 and 51.81％ explained,teacher-student relationship 0.42-0.76 and 49.58％ explained.The model in 4 factors(x2/df =2.59,CFI =0.85) fitted the data with well construct validity.The Cronbach α coefficients were 0.847 in parent-child relationship scale,0.865 in collegemate relationship scale and 0.836 in teacher-student relationship scale.The test-retest reliabilities were 0.867,0.786 and 0.746.Conclusions The MIDQ-U has satisfactory validity aud reliability.It can be used to measure one of the three relationships separately,and also as an evaluation tool to compare and correlate multiple interpersonal dynamics.

Objective To investigate the clinical effect of super selective embolization combined with opera-tion for treatment of meningiomas.Methods 82 cases treated by operation and pathology in return for meningioma were collected in the study,including 44 cases of preoperative superselective embolization for aneurysms as the treat-ment group,and the remaining 38 cases without preoperative embolization of patients as the control group.The opera-tion time,bleeding amount in the operation and the rate of total tumor removal were recorded and compared between the two groups.Results The average amount of bleeding of treatment group was (330.36 ±95.41)mL.The average amount of bleeding of control group was (460.82 ±114.64)mL.The data of the two groups was statistically significant (t =5.624,P <0.01).,The treatment group bleeding amount was less than that of the control group;,the mean oper-ation time of treatment group was (5.36 ±2.62)h,,the average operation time of control group was (6.63 ±2.25)h.The data of the two groups was statistically significant (t =2.355,P =0.021 ),the operation time of the treatment group was less than that of the control group.The total resection rate was 70.4% in treatment group and 36.8% in the control group,there was statistically significant (P <0.05),and the total resection rate in the treatment group was higher than that in the control group.Conclusion Compared with single operation treatment of meningiomas superse-lective embolization combined with operation for treatment of meningiomas can shorten operation time,reduce intraoperative hemorrhage,improve the rate of total tumor removal.It can reduce the operation risk and improve the treatment effect.

BACKGROUND: Cardiospecific proteins of the troponin-tropomyosin complex in the contractile system of the cardiomyocytes have challenged creatine kinase isoenzyme MB (CK-MB) as the "gold standard" for the early biochemical detection of acute myocardial injury.OBJECTIVE: To investigate cardiac troponin Ⅰ messager RNA (cTnI-mRNA) in peripheral blood and its clinical values in diagnosis of patients with myocardial injury.DESIGN: A basic and observational study for set up a method to analyze cTnI-mRNA.SETTING: Department of Cardiology, Affiliated Hospital, Nantong University.MATERIALS: The project was accomplished from May 2003 to May 2005 in Research Center of Clinical Molecular Biology, and Department of Pathology, Affiliated Hospital, Nantong University. The cTnI-mRNA was detected from blood by a nested PCR assay, and its clinical values as a sensitive myocardial diagnostic marker were confirmed in patients with myocardial injury.METHODS: Pathologic features and microstructure of cardiac myocytes were examined by H&E staining or electron microscopy. The cTnI-mRNA was extracted from blood and synthesized to cDNA through random primers and reverse transcriptase, and amplified by a nested PCR assay, and its clinical values as a myocardial diagnostic marker were investigated in patients with myocardial injury.MAIN OUTCOME MEASURES: Microstructure of cardiomyocytes, sensitivity of analysis method and diagnostic values.RESULTS: Microstructure of cardiomyocytes with mitochondria swell,rupture, vacancy-like denaturation, nucleus abnormality, and chromatin condensed were observed by electron microscopy. The cTnI-mRNA fragments from heart and blood were successfully amplified and the sensitivity was 2 pg/μL. The product sequences from tissues or blood were confirmed by sequencing. The cTnI-mRNA from cardiac myocytes was found that it present in blood plasma and not in circulating nucleus cell. The incidence of blood cTnI-mRNA of chronic cardiomyopathy was significantly higher (P ＜ 0.05) than that of serum enzymatic patterns or cTnI quality,respectively.CONCLUSION: The analysis of blood cTnI-mRNA is a sensitive marker for diagnosis and monitoring of myocardial injury.

Objective　To clone the partial positive regulatory fragment of Na+/H+ exchanger-1 (NHE-1) gene from human lung cancer cells. Methods　After BamHⅠ and EcoRⅠ cut sites were added to the 5' ends of the upstream and downstream primers respectively, the partial positive regulatory sequence of NHE-1 gene was cloned with the length of 170 bp from genomic DNA of lung cancer cell line A549 cells with PCR method. The cloned fragment was ligated to plasmid pUC18. Finally, the constructed recombinant was identified with enzyme cut, PCR and DNA sequencing. Results　The cloned fragment was about 170 bp in size and successfully ligated to pUC18 with identifiation of double enzyme cut and PCR. DNA sequencing approved that the fragment cloned was objective one with 168 bp in length. Compared with the reported sequence, two t were lost. Conclusion　The positive regulatory fragment of NHE-1 gene from human lung cancer cells was successfully cloned.

Objective]To assess the effects and mechanism of triptolide(TPL)on cardiac remodeling in chronic heart failure (CHF)rats.[Methods]Thirty-two Wistar rats were divided into four groups of eight:Control group,isoprenaline(Iso)group,TPL group(Iso+TPL)and captopril group(Iso+Cap). CHF rat model was induced by Iso. In TPL and Cap group,TPL(20μg/kg·d)and Cap(15 mg/kg·d)were administrated to CHF rats for six weeks. Left ventricular internal diameter at end-diastole(LVIDd)and left ventricular internal diameter at end-systole (LVIDs)were detected. Histopathological changes of myocardial tissues of rats were evaluated byMasson staining and immunohistochemical staining of type Ⅰcollagen. Ventricular weight/body weight ratio(VW/BW), collagen volume fraction(CVF),perivascular collagen volume area(PVCA)of myocardial tissues were calculated. With real-time polymerase chain reaction and Western blot,the protein and mRNA levels of phosphatase and tensin homologue deleted on chromosome ten(PTEN)were detected.[Results]Compared to the Iso group,the levels of LVIDs,LVIDd,VW/BW,CVF and PVCA reduced in TPL and Cap group. TPL and Cap can alleviate the myocardial fibrosis in CHF rats. The expression of PTEN protein and mRNA increased markedly in the TPL or Cap treated group.[Conclusion]TPL can attenuate cardiac remodeling in Iso-induced CHF rats. The potential mechanism may be highly associated with the up-regulating of PTEN signaling pathway.

Objective To investigate the relationship between inflammatory factors, coronary artery dilation, and their clinical significance. Methods The cases undergone coronary angiography in our hospital last year were collected and divided into three groups: the first one included 11 patients whose angiography showed coronary artery dilation, the second group included 35 cases of atherosclerosis, and the third includes 24 cases with normal angiography. sES, MMP9 and TIMP1 were measured by ELISA method. Results Patients with coronary artery dilation were found to have significantly higher sES and MMP-9 level in comparison with atherosclerosis group and normal group[(153.7?152.7)ng/L,(90.1?54.2)ng/L,(76.5?37.2)ng/L, respectively](P