OBJECTIVE: To study the protective effects of nimesulide, a COX- 2 selective inhibitor on experimental gastric ulcer in rats. METHODS: The gastric ulcer model was established in rats by intragastric administration them with indometacin, 5 min later, which were assigned to receive nimesulide at different dosages ( 200, 100, and 50mg? kg- 1) , 6h later, all the rats were sacrificed. The primary outcome measures were the area of ulcer, levels of SOD, MDA, and GSH in sera and gastric mucosa. RESULTS: As compared with model group, in nimesulide ( at different dosage) groups, the area of ulcer was markedly decreased, level of MDA was decreased while activities of SOD and GSH were increased ( P

Objective Using second duplication checking to prevent academic misconduct of accepted papers ,and to improve the academic quality of journals for the consolidating credibility of academic journal and brand establishing .Methods Academic Mis-conduct Literature Check(AMLC)system developed by CNKI was applied to check possible academic misconduct of 90 accepted pa-pers for Chongqing Medical Journal ,then the contribution time ,duplication checking time ,words repetition percentage of the accept-ed papers with academic misconduct and similarity literature were analyzed compared with the source papers .Results After chec-king 90 accepted papers ,9 of them were suspected with academic misconduct ,including 5 papers with 30 .1% -40 .0% of coinci-dence rate ,1 paper with 40 .1% -50 .0% of coincidence rate ,and 3 papers with more than 50 .1% of coincidence rate .Most of the academic misconduct were multiple contribution of same manuscript or duplicate publication .Conclusion To avoid the multiple con-tribution of the same manuscript or duplicate publication ,we should shorten peer review and publishing period ,carry on multi-dupli-cation checking ,punish academic misconduct ,and work together with other sci-tech periodicals to eliminate academic misconduct .

Objective To improve the quality standard for Chuanxiong by studing the method of discriminating Chuanxiong. Methods Chuanxiong was identified by TLC. The content of ferulic acid in Chuanxiong was determine by HPLC. The Agilent Eclipse XDB-C18 (4.6 mm?150 mm, 5 ?m) was used, mobile phase was methanol-1% acetic acid solution (21∶79), flow rate was 1.0 mL/min, detection wavelength was 320 nm. Results The TLC spots developed were fairly and simply identical. HPLC was accurate and reproducible. Ferulic acid showed a good liner relationship at range of 0.042 5～0.382 5 ?g, the average recovery was 97.10% (RSD=1.31%). Conclusion These methods can be used to control the quality of Chuanxiong effectively.

Egr-1 is an important transcription factor, which regulates at least 30 kinds of gene expression. Egr-1 couples extracellular signals to long-term responses by altering expression of Egr-1 target genes. So egr-1 can directly or indirectly affect cell differentiation,apoptosis,immune response,injury and repair. This article reviewed the progress in Egr-1 and the lung disease.

Cerebral ischemia activates endogenous angiogenic factors,and increase microvessel density and form new capillaries in ischemic brain tissues.Exogenous angiogenic factors can more effectively promote angiogenesis and the establishment of collateral circulation in ischemic regions and peripherial tissues,improving local blood supply and reducing infarct size.The further study of the mechanisms and methods in promoting regional angiogenesis after cerebral ischemia will contribute to improve neurologic deficit.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Dermatomyositis ; diagnosis ; Female ; Humans ; Male ; Middle Aged ; Otolaryngology ; Young Adult

Objective To investigate the correlation of serum ereatine kinase iseenzyme-MB (CK-MB) and recent cardiac events(30 days, 180 days) and late cardiac events (360 days) in patients with acute coronary syndrome (ACS). Methods Serum creatine kinase (CK) and CK-MB in 168 patients with ACS were measured, and these patients were divided into four groups according to the levels of CK and CK-MB. The occurrence of cardiac events analysis of CK and CK-MB was followed up for 30, 180 and 360 days and the relationship between the occurrence of cardiac events and the levels of CK and CK-MB were studied. Results There was statistical correlation between increased CK-MB and abnormal ECG Q wave, ST segment change (P< 0.05), 168 patients had followed up 30, 180 and 360 days, in which cardiac events happened in 57 common patients (64 examples), 27 examples (16.1%) happened in the recent cardiac event, and 37 examples(22.0%) happened in the late cardiac event. The cardiac event and CK-MB elevation had statistical correlation (P<0.05). Conclusion ACS patients with increased CK-MB levels prompt a poor prognosis, and could be an independent indicator of recent and late cardiac events in patients with ACS.

This paper reviews the binding mode beween deoxyribonucle ic acid (DNA) and the different type of fluorescence probe. The application of t hese probes in DNA quantitation analysis and other ways is also reported. The pr ogress of DNA fluorescence probe is addressed.

Objective To investigate the effects of dexamethasone on the growth of cervical cancer induced by HeLa cells transplanted into BALB/c mice. Methods HeLa cells were inoculated subcutaneously into BALB/c mice. Dexamethasone (15 mg?kg-1?d-1) was injected intraperitoneally from the 6th or the 16th day after tumor inoculation for 10 days continuously. Diameter of tumors was measured every two or three days. Apoptotic bodies were observed by transmission electron microscopy and counted by TUNEL. Results Dexamethasone repressed the growth of cervical cancer and induced tumor cell apoptosis, but the tumor volumes were of statistical difference between the two groups of different injection start time (P

Objective In order to study the pathogenesis of human papillomavirus(HPV) and seek for a therapeutic approach of the diseases caused by HPV, the construction of HPV18 E6E7 antisense RNA expressing recombinants was studied. Methods We amplified the HPV18 E6E7 816bp by PCR with HPV18 plasmid DNA as the template. pLNSX retroviruses were used as vectors,the HPV18 E6E7 retrovirus recombinants were constructed. And then the recombinants were cleaved with restriction endonuclease and hybridized with Southern blot for identifying the inserting direction and special check respectively. Results and conclusion The HPV18 E6E7 antisense RNA retrovirus expressing recombinants were screened and obtained,which had laid the foundation of studying the function of E6E7 genes further and explore whether the antisense technique can adjust and control the expression of E6E7 genes.