AIM: Expression of bcl-2 in Marek's disease (MD) tumor was analyzed and relationship between bcl-2 gene and lymphomagensis clarified. METHODS: Model of MD tumor was reproduced on SPF White Leghorn chickens, collected tumor and normal tissues, conserved in liquid nitrogen. Total RNA in the tissues was obtained by AGPC method, detected their concentration and analyzed by 1% denatured agrose gel containing formaldehyde. A plasmid (pTTCB1) that contains chicken bcl-2 1.2 kb fragment was amplified, extracted and digested with restriction endonuclease (RE), the 1.2 kb fragment was recoveried and puarified with purigene kit, labeled probes with [α-32P]. Expression of bcl-2 was analyzed with Dot blot and Northern blot hybridization. RESULTS: (1) There are bcl-2 transcripts in MD tumor and relevent normal tissues; (2) Expression of bcl-2 in MD tumor is much higher than that in normal tissues. CONCLUSION: Our findings indicated that expressive products of chicken bcl-2 promotes lymphomagenesis of MD by blocking apoptotic cell death.

Medical staff must pay attention to the following ethical questions during the salvage of SARS patients: (1)respecting SARS patients' dignity and personality; (2)respecting SARS patients' right of hospitalizing equally ; (3)adjusting SARS districts' ethical relationship between patients and doctors; (4)respecting SARS patients' informed consent right; (5)not ignoring the caring of SARS patients until the last;etc.

Objective To analyze the relationship between the survival and expressions of EGFR and Her-2, and explore the prognostic significance of EGFR and Her-2 in gastric cancer patient by detecting the expressions of EGFR and Her-2 in gastric cancer specimens. Methods EGFR and Her-2 were detected by immunohistochemistry. The relation between their expressions with their clinical characteristics and prognosis were analyzed. Results The over-expression rates of EGFR and Her-2 are 27.4 % and 32.1% respectively in 84 cases. The over-expression rates of EGFR and Her-2 in patients with Ⅲ + Ⅳ stages were significantly higher than those with Ⅰ + Ⅱ stages(respectively, P =0.014 and P =0.005). The positive rate in patients with T3+T4 stages were significantly higher than those with T1+T2 stages (P=0.033); and the positive rate in patients with positive lymph node was higher significantly than that with negative (P =0.033). The OS and PFS in over-expression patients were significantly longer than low-expression. Conclusion The overexpression of EGFR and Her-2 could be used to evaluate the degree of differentiation and prognosis of patients with gastric cancer.

OBJECTIVE1-Bromo-3-chloro-5,5-dimethylhydantoin (BCDMH) is a solid oxidizing biocide for water disinfection. The objective of this study was to investigate the toxic effect of BCDMH on zebrafish.

METHODSThe developmental toxicity of BCDMH on zebrafish embryos and the dose-effect relationship was determined. The effect of BCDMH exposure on histopathology and tissue antioxidant activity of adult zebrafish were observed over time.

RESULTSExposure to 4 mg/L BCDMH post-fertilization was sufficient to induce a number of developmental malformations, such as edema, axial malformations, and reductions in heart rate and hatching rate. The no observable effects concentration of BCDMH on zebrafish embryo was 0.5 mg/L. After 96 h exposure, the 50% lethal concentration (95% confidence interval (CI)) of BCDMH on zebrafish embryo was 8.10 mg/L (6.15-11.16 mg/L). The 50% inhibitory concentration (95% CI) of BCDMH on hatching rate was 7.37 mg/L (6.33-8.35 mg/L). Histopathology showed two types of responses induced by BCDMH, defensive and compensatory. The extreme responses were marked hyperplasia of the gill epithelium with lamellar fusion and epidermal peeling. The histopathologic changes in the gills after 10 days exposure were accompanied by significantly higher catalase activity and lipid peroxidation.

CONCLUSIONThese results have important implications for studies on the toxicity and use of BCDMH and its analogs.

Animals ; Antioxidants ; metabolism ; Disinfectants ; toxicity ; Dose-Response Relationship, Drug ; Embryo, Nonmammalian ; drug effects ; Hydantoins ; toxicity ; Time Factors ; Water ; chemistry ; Water Pollutants, Chemical ; toxicity ; Zebrafish

OBJECTIVETo explore the status of articles published in Chinese Journal of Pediatrics from 2005 to 2014.

METHODAll the articles published in Chinese Journal of Pediatrics from 2005 to 2014 were searched at Wanfang Medical Online database. The total number and citations of articles, authors, agency, single article citation, internet downloads, columns, fund and Mesh were analyzed. The end of searching period was January 2015.

RESULTFrom 2005 to 2014, 2814 articles were published in Chinese Journal of Pediatrics, 235 to 380 articles per year. A total of 1 596 articles were cited, the citation rate was 56.16%, total number of citation was 15 428. Among single article citations, of the top 20 articles, 55% (11/20) were those published in the Standard/Protocol/Guide column. Of the top 20 papers most frequently downloaded on internet, 100% were articles published in the Standard/Protocol/Guide column. During the recent 10 years, the source of the papers published in the journal covered 31 provinces, municipalities and autonomous regions. The column that published the largest number of articles was Original Article (911, 32.05%), followed by Case Report (336,11.82%) and Review (245, 8.62%). Of the total number of articles published in the journal, 747 were supported by fund, which accounted for 26%. The articles supported by national fund accounted for 8%.

CONCLUSIONArticles published in Chinese Journal of Pediatrics had high-quality and can reflect the development and research progress in pediatric medicine. It is one of the most important information resources in pediatric academic fields in China.

Bibliometrics ; China ; Pediatrics ; Periodicals as Topic ; statistics & numerical data

Objective : To investigate the role of lncSIL in transforming growth factor-β1(TGF-β1)-induced alveo- lar epithelial interstitial transformation (EMT) and its related signaling pathways . Methods : Western blot was used to detect the effect of lncSIL silencing on the expression of E-cadherin ( E-cad) , alpha-smooth muscle actin ( α- SMA) and Collagen I (Col I) in the process of EMT induced by TGF-β1 . LncSIL interacting proteins were ana- lyzed by RNA pulldown . Western blot was used to detect the effect of overexpression or silencing of lncSIL on the expression of its target gene enhancer of zeste homolog 2 (EZH2) and its downstream factors P21 and cyclin-de- pendent kinase 6 (CDK6) . Flow cytometry was used to analyze the effect of lncSIL on cell cycle progression . Results: After lncSIL silencing , the expression of α-SMA and Col I increased , the expression of E-cad decreased . RNA pulldown assay showed that EZH2 was the target protein that interacted with lncSIL , and the expression of EZH2 increased after silencing lncSIL , the expression of EZH2 downstream gene P21 decreased , CDK6 increased . Flow cytometry showed that the number of cells in S phase significantly increased . When lncSIL was overexpressed , the expression of EZH2 and CDK6 was down-regulated , the expression of P21 was up-regulated , and the number of S phase cells significantly decreased . Conclusion LncSIL inhibits TGF-β1-induced alveolar epithelial cell mesen- chymal transition by negatively regulating EZH2/P21 /CDK6 signaling pathway to inhibit cell cycle progression .

Detailed knowledge on tissue-specific metabolic reprogramming in diabetic nephropathy (DN) is vital for more accurate understanding the molecular pathological signature and developing novel therapeutic strategies. In the present study, a spatial-resolved metabolomics approach based on air flow-assisted desorption electrospray ionization (AFADESI) and matrix-assisted laser desorption ionization (MALDI) integrated mass spectrometry imaging (MSI) was proposed to investigate tissue-specific metabolic alterations in the kidneys of high-fat diet-fed and streptozotocin (STZ)-treated DN rats and the therapeutic effect of astragaloside IV, a potential anti-diabetic drug, against DN. As a result, a wide range of functional metabolites including sugars, amino acids, nucleotides and their derivatives, fatty acids, phospholipids, sphingolipids, glycerides, carnitine and its derivatives, vitamins, peptides, and metal ions associated with DN were identified and their unique distribution patterns in the rat kidney were visualized with high chemical specificity and high spatial resolution. These region-specific metabolic disturbances were ameliorated by repeated oral administration of astragaloside IV (100 mg/kg) for 12 weeks. This study provided more comprehensive and detailed information about the tissue-specific metabolic reprogramming and molecular pathological signature in the kidney of diabetic rats. These findings highlighted the promising potential of AFADESI and MALDI integrated MSI based metabolomics approach for application in metabolic kidney diseases.