Objective To detect the impact of reactive oxygen species ( ROS) on mitochondrial morphology and distri-bution during mitosis.Methods A viral vector in which the fluorescence gene was specifically under the control of mito-chondrial promoter was constructed and confirmed through DNA sequencing and Western blotting.After transfecting HeLa s3 cell with packaged virus, the HeLa s3-COX4tp-EGFP cell line stably expressing the mitochondrial fluorescence signal was obtained.With immunofluorescent staining, the impact of ROS on the morphology and distribution of mitochondria dur-ing mitosis was inspected.Result The cell line constantly expressing mitochondrial fluorescence signals was successfully constructed.Meanwhile,it was found that H2 O2 treatment could significantly change the morphology and distribution of mi-tochondria during mitosis by confocal microscopy.Conclusion Our study demonstrates that ROS can affect the morphology and distribution of mitochondria during mitosis.This research help study the relationship between the mitochondrial function and the regulation of mitosis in the future.

Objective Taking the respiratory department of internal medicine as an example, to compare the coverage of clinical treatment of the MDC covered by DRGs of Beijing version with the professional services offered as secondary clinical treatment subjects in China.Methods Using the data from medical record home page from hospitals in Beijing above secondary level from 2012 to 2014 and both the DRGs defined in Pareto diagram statistical method and the DRGs proved by experts, for analysis and definition of the DRGs coverage involved by respiratory discipline of internal medicine.Results Respiratory discipline of internal medicine involved DRGs of 42 groups as found by the two methods.Conclusion The DRGs scope of secondary clinical departments in hospitals should be made based on both expert consultation and clinical data statistics method.

Collection and quality control of inpatient medical record home page information are key to the study and use of DRGs.The paper covered the sampling methods, inspection items, inspection methods, data assembly methods, and data reporting quality scoring methods of Beijing authorities on the hospitals in the city.Also introduced were the inspection results of the city in 2014, which prove a satisfactory outcome in the end.

Objective To analyze the applicability of case mix index (CMI) in medical performance evaluation of different type of hospitals and its calculation method.Methods Standardized adjustment to the CMI value of hospitals according to the CMI of the main disease categories (MDC) of short-term inpatient cases of the city, to align the CMI values of various hospitals with their levels of medical and technical services.Results The said adjustment ensures the CMI value to better represent the levels of such hospitals.Conclusion The adjusted CMI calculation method can provide accurate data support for various hospitals' performance evaluation.

Structure of natural product-ursolic acid was modified for increasing its antitumor activity. Ursolic acid was acylated, esterified, hydrolized or oxidized to obtain target pentacyclic triterpenoid compounds with different substitutes. Sixteen derivatives of ursolic acid were designed and synthesized including eleven new compounds. Anti-tumor activities of ursolic acid and these derivatives against HeLa, SKOV3 and BGC-823 cells in vitro were investigated by MTT assay. The results indicated that compounds 7a and 8a were found to have stronger cell growth inhibitory than ursolic acid on HeLa cells and SKOV3 cells separately, and are worth to be intensively studied further.
Antineoplastic Agents, Phytogenic ; chemical synthesis ; chemistry ; pharmacology ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; HeLa Cells ; Humans ; Triterpenes ; chemical synthesis ; chemistry ; pharmacology

Induced pluripotent stem (iPS) cells were originally generated from mouse fibroblasts by enforced expression of Yamanaka factors (Oct3/4, Sox2, Klf4, and c-Myc). The technique was quickly reproduced with human fibroblasts or mesenchymal stem cells. Although having been showed therapeutic potential in animal models of sickle cell anemia and Parkinson's disease, iPS cells generated by viral methods do not suit all the clinical applications. Various non-viral methods have appeared in recent years for application of iPS cells in cell transplantation therapy. These methods mainly include DNA vector-based approaches, transfection of mRNA, and transduction of reprogramming proteins. This review summarized these non-viral methods and compare the advantages, disadvantages, efficiency, and safety of these methods.
Animals ; Cellular Reprogramming ; Humans ; Induced Pluripotent Stem Cells ; physiology ; Transduction, Genetic ; Transfection ; Transgenes

Adolescent ; Adult ; Female ; Hepatitis ; therapy ; Humans ; Liver, Artificial ; Male ; Middle Aged ; Plasma Exchange

OBJECTIVETo evaluate and map the putative tumor suppressor loci on chromosome 5 involved in tumor progress or metastasis.

METHODSChromosome 5 of 83 patients with sporadic colorectal cancer was systemically screened. Fifteen microsatellite marker primers labeled with 3 different fluorescents were used to amplify the corresponding loci of the genome DNA. The PCR products were electrophoresed on a 377 PRISM sequencer and the fluorescent signals were analyzed with Genotyper and Genescan software.

RESULTSThe highest loss of heterozygosity (LOH) ratio was found at D5S416 (48.15%) on 5p and at D5S471 (38.71%) on 5q. The region (5q13.3 - 31), where D5S471 and 3 neighboring loci (D5S428, D5S2027 and D5S2115) reside, presented high frequent LOH.

CONCLUSIONThe deletion of APC, MCC, CTNNA1 and IL cluster in the 5q 13.3 - 31.1 area play important role in the tumorogenesis of colorectal cancer, and the expected existence of another novel tumor suppressor gene on 5p is possible.

Adult ; Aged ; Aged, 80 and over ; Alleles ; Chromosome Deletion ; Chromosomes, Human, Pair 5 ; Colorectal Neoplasms ; genetics ; Female ; Genes, Tumor Suppressor ; Humans ; Loss of Heterozygosity ; Male ; Microsatellite Repeats ; genetics ; Middle Aged

Objective To investigate the antibacterial molecular mechanism of Traditional Chinese Medicine Coptis rhizome against Yersinia pestis(Y.pestis).Methods The method based on whole genome DNA micrnarray of Y.pestis was used.The minimal inhibition concentration(MIC)of berberine to Y.pestis was determined with liquid dilution method.Then gene expression profile of Y.pestis was performed after exposed to berberine at the concentration of 10×MIC for 30 minutes.Total RNA extracted and purified from Y.pestis and reverse-transcribed to cDNA,then labeled by Cy-dye.Finally,the labeled probes were hybridized to the microarray and the results were obtained by a laser scanner and analyzed by the SAM software.Results The gene expression profile data revealed that the response of Y.pestis to berberine was a global phenomenon.A total of 360 genes changed significantly.Among them,333 genes were up-regulated,27 down-regulated.These differentially expressed genes were further classified into 24 different functional categories based on the genomie annotation of Y.pestis CO92,in which the number of mainly related genes were 83,75 and 48,including cell envelop,unkown,transport/binding proteins functions.The 40 genes related to the metabolism were upregulated,which was a remarkable change.Conclusion Our results have revealed the general gene expression changes of Y.pestis in response to berberine and demonstrated the antibacterial molecular mechanism of the Coptis rhizome.The major mechanism of Y.pestis in response to berberine is the upregulation of genes related to the metabolism.

Objective To compare the effect of two kinds of flushing fluid in the prevention of gastrointestinal nutrition tube blocking .Methods Sixty-four patients who were placed the gastrointestinal nutrition tube for enteral nutrition were randomly divided into observation group , which contained 35 cases, and control group, which contained 29 cases.After daily infusion of nutrient solution , 5% sodium bicarbonate solution plus 2 Multi-enzyme flushed gastrointestinal nutrition tube for the observation group; while for the control group, the 20ml normal saline was used .Results Compared the incidence of clogging rate of the two gastrointestinal nutrition tube , observation group was 5.7% and control group was 34.5%, the difference was statistically significant (P <0.01).Conclusions The sodium bicarbonate solution plus Multi-enzyme can wash, dissolve the contents ’ adhering to the catheter wall , and reduce the obstruction of gastrointestinal nutrition tube effectively , so that enteral nutrition can proceed smoothly .