2.Growth of human osteosarcoma cells affected by transfection of human antisense BMP2 retrovirus cxpression vcctors
Wen YUE ; Lianjia YANG ; Xin LI
Journal of Practical Stomatology 2000;0(05):-
objective: To study the effects of BMP on the growth of osteosarcoma cells. Methods: Human antisense BMP2 retrovirus expression vector was constructed and transfected into human osteosarcoma OS 9901 cells by Lipofect AMINE. Positive cell clones were selected with G 418. The expression of BMP and PCNA were determined by immunohistochemical methods, image analysis and expressed as grey level. The morphology and cell cycle distribution of the cells were studied by electronmicroscope and flowcytometry respectively. Results:The grey levels of BMP and PCNA in the transfected cells were 198.4?8.51 and 197.3?3.22, those of the control were 135.1?12.32 and 142.9?8.47,respectively. G 1, G 2 and S phase cells were 51.9%,18.2% and 22.7% in the cell cycle of transfected cells, while those of the control were 52.8%,11.1% and 36.1%, respectively.Increased lysosome and small pieces of chromatin were observed in the transfected cells under electronmicroscope. Conclusion:Transfection of antisense BMP2 may inhibite the expression of BMP and proliferating activity of osteosarcoma cells.
3.Dissolution Determination of Cephalexin from Different Preparations by Optical Fiber in-Situ Process Anal-ysis
Shumei YANG ; Wen HE ; Xin LI
China Pharmacist 2015;(3):381-383,384
Objective:To develop a UV optical fiber in situ process monitoring method for the dissolution behavior of five cepha-lexin solid dosage forms and compare the drug dissolution behavior of different cephalexin preparations. Methods: The dissolution of five different cephalexin preparations was on-line monitored according to the dissolution method for cephalexin tablets in Chinese Phar-macopeia (2010 edition) combined with a six channel optical fiber chemical sensor in situ dissolution monitor. Results:The dissolu-tion curves could show the drug release characteristics of different cephalexin preparations, and the five different preparations exhibited various drug release features. Conclusion:An in-situ, real time, on-line and process analysis of dissolution can be obtained by optical fiber dissolution test system automatically. The release characteristics of different preparations can be presented through dissolution curves directly, which can provide reference for the overall assessment of drug internal quality and clinical medication.
4.Development of Parental Punishment Style Questionnaire
Fang LI ; Wei HE ; Wen-Xin ZHANG ;
Chinese Journal of Clinical Psychology 2006;0(06):-
Objective: To develop parental punishment style the questionnaire. Methods: Based upon previous literature about parental punishment style and expert interview, data were collected for the parental punishment style questionnaire. A sample of 1028 junior high school students were asked to complete the questionnaire and 158 of them was given retest after a month. Results: Taken from the questionnaire by exploratory factor analysis four factors were compatible. The results of confirmatory factor analysis showed a good fit to the data. The internal consistency reliability of father and mother questionnaire was satisfactory, with Cronbach ? coefficient 0.91; and the test-retest reliability was also satisfactory, with test-retest correlation coefficient 0.88 and 0.89, which showed good content validity and high construct validity. Conclusion: The questionnaire has good reliability and validity, and meets the need of psychometrics.
5.Clear cell renal carcinoma coexisting with primary renal lymphoma: report of a case.
Chinese Journal of Pathology 2012;41(10):701-702
Antigens, CD20
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metabolism
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CD79 Antigens
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metabolism
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Carcinoma, Neuroendocrine
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metabolism
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pathology
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Carcinoma, Renal Cell
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metabolism
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pathology
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Diagnosis, Differential
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Female
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Follow-Up Studies
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Humans
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Kidney Neoplasms
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metabolism
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pathology
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Leukocyte Common Antigens
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metabolism
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Lymphoma, Large B-Cell, Diffuse
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metabolism
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pathology
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Middle Aged
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Neoplasms, Multiple Primary
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metabolism
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pathology
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Nephrectomy
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PAX5 Transcription Factor
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metabolism
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Wilms Tumor
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metabolism
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pathology
8.Exploration of the relationship between ultrasonographic features of papillary thyroid carcinoma and lat-eral cervical lymph node metastasis
Qiucheng WANG ; Wen CHENG ; Xin WEN ; Jiebing LI ; Chunlei NIE
Practical Oncology Journal 2014;(1):49-53
Objective To investigate the relationship between ultrasonographic features of papillary thy-roid carcinoma(PTC)and lateral cervical lymph node metastasis (LCLNM).Methods A total of 449 eligible ca-ses with 633 PTC nodules was selected and divided into two groups:LCLNM group included 135 nodules(91 pa-tients);Without metastatic groups included 498 nodules(135 patients).Ultrasonographic features of PTC nodules and the relationship with LCLNM were analyzed by χ2 test and logistic regression analysis .Results In univariate analysis,the significant factors were male,age<45yrs,multifocal,maximal diameter(d>1 cm),multi-microcal-cificaltion(d<2 mm),mixed flow,wider than tall,CCLNM,extrathyroid extension,located in upper(P<0.05 or P<0.017).Multivariate analysis showed that multi -microcalcificaltion(d<2 mm),wider than tall,CCLNM,ex-trathyroid extension,located in upper pole were predictive factors of LCLNM (P<0.005,OR=1.626,2.644, 0.479,2.579).Conclusion High-frequency ultrasound can accurately describe the sonographic appearance of thyroid nodules;it can be used to remind the risk of LCLNM before operation ,and will be informative for the treat-ment of surgery .
9.Studies on Establishment of Co-expression System and Function of Human Complement Regulatory Proteins MCP and CD59
Li XU ; Zhou-Zhou ZHAO ; Hui LIU ; Wen-Xin LI ;
China Biotechnology 2006;0(09):-
Recombinant expression vector pcDNA3-MCPCD59DP containing human membrane complement regulatory proteins(hCRPs) MCP and CD59 cDNA was constructed successfully by using two independent promoters.After transfected into NIH3T3 cells with calcium phosphate-DNA precipitate method,NIH3T3 pcDNA3-MCPCD59-DP transfectants were obtained by G418 selection.Extraneous genes integration was identified by PCR.The co-expression of human CD59 and MCP at both mRNA and protein levels was confirmed by using RT-PCR and Western blot analysis.Human MCP and CD59 cDNA were integrated in NIH3T3 pcDNA3-MCPCD59-DP genomic DNA after continuous 30 times passages,indicating that NIH3T3 pcDNA3-MCPCD59-DP were stable cell lines.Human complement-mediated cytolysis assays showed that NIH3T3 cells transfected stably with pcDNA3-CD59,pcDNA3-MCP,and pcDNA3-MCPCD59-DP were protected from C-mediated damage and co-expressed human MCP and CD59 provided more excellent protection against C-mediated attack as compared with either CD59 or MCP expressed alone.The dicistronic vector represents an effective and efficacy strategy to overcome C-mediated damage and has potential therapeutic value for effectively controlling complement activation and finally for preventing hyperacute rejection in clinical gene therapy.
10.Misdiagnosis of cervical bronchogenic cyst with nodular goiter in a case.
Li-Juan LI ; Shu-Xin WEN ; Bin-Quan WANG
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2013;48(7):598-599
Bronchogenic Cyst
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diagnosis
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Diagnostic Errors
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Goiter
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Goiter, Nodular
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diagnosis
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Humans
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Neck