2.Apoptosis-inducing Effect of BMP7 Gene on Human Liver Cancer Cell Line HepG2
China Biotechnology 2006;0(11):-
Objective:To construct recombinant retrovirus expressing human bone morphogenetic protein-7 gene BMP7 and to discuss its apoptosis-inducing activities and the mechanism in liver cancer cell line HepG2. Methods:BMP7 gene was amplified and reconstructed with retroviral plasmid pLP-LNCX by loxP homologous recombination,and then the plasmid pLP-LNCX-BMP7 (pLLBMP7) was transferred into packing cell line PT67 and the supernatant was collected to assay viral titer. MTT assay was adopted to observe HepG2 cells amplification. 48h after pLLBMP7 infection agarose electrophoresis and flow cytometry were used to verify apoptosis of tumor cells,and then the expression of BMP7,caspase-3 and bcl-2 proteins were detected by Western blotting. Results:Recombinant retrovirus pLLBMP7 was justified and transformed into PT67 package cell with supernatant viral titer amounted to 5?109 pfu/ml. In MTT assay retrovirus group had no evident difference from controls in cellular inhibition 72h later (35.1% vs. 5.3%,68.5% vs.18.3%,p
3.Research actuality of chemosensitivity testing in chemotherapy
Ning ZHAO ; Xiang QU ; Zhongtao ZHANG
International Journal of Surgery 2009;36(8):565-568
This paper explains the research status of chemotherapy sensitivity test in three aspects of history of development, specific methods and clinical application. Chemotherapy sensitivity test is an important way to achieve individual treatment of cancer, after more than 60 years, there are two major categories(in vivo method and in vitro method) of more than 10 kinds of methods. The basic steps of sensitivity test inelude culture of primary tumor cells, chemotherapy drugs mixed, the reaction mixture, observing the results of detection and analysis of indicators. This paper focuses on basic principles, main steps and characteristics of six methods, such as the renal capsule of nude mice model of human cancer, the difference between staining cell, tetrazolium salt colorimetric, adenosine triphosphate based bioluminescence tumor chemosensitivity assay, collagen gel embedded culture method and targeting molecule sensitivity assay. Through the results of several clinical trials, it can be seen that chemotherapy under the guidance of drug sensitivity test significantly improved more than experience chemotherapy in efficient rate, median progression-free survival time, survival time, clinical complete remission rate, pathological complete remission rate, etc.
4.Early apoptosis induced by mechanical stretch in human alveolar type Ⅱ epithelial cells
qiao-ming, NING ; xiang-rui, WANG
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(08):-
Objective To investigate the apoptosis response to mechanical stretch in human alveolar type Ⅱ epithelial cells A549.Methods First,A549 cells were given different stretch(0%,5%,15%,30%) at frequency of 0.5 Hz for 4 h.Then,A549 cells were stretched for different periods(0 h,2 h,4 h,8 h) at stretch 15%,0.5 Hz.Last,A549 cells were stretched for different frequency(0 Hz,0.2 Hz,0.5 Hz and 1 Hz) at stretch 15% for 4 h.The early apoptosis was detected by flow cytometry. Results A549 cells submitted to cyclic stretch caused the early apoptosis in a time-,stretch-and frequency-dependent manner.In details,at 0.5 Hz and 4 h stretch-dependence occurred,at 15% stretch and 0.5 Hz time-dependence occurred,and at 15% stretch and 4 h frequency-dependence occurred. Conclusion Mechanical stretch can induce the early apoptosis in human alveolar type Ⅱ epithelial cells A549,which may be one of the mechanisms of ventilator-induced lung injury.
5.Therapeutic Effect of Procaine Plus Compound Salvia Miltiorrhiza in the Treatment of Henoch-Schonlein Purpura Associated with Stomachache
Linqin ZHENG ; Ning DONG ; Xiang LIN ;
Chinese Journal of Pharmacoepidemiology 2007;0(02):-
Objective:To explore the therapeutic effect of procaine plus compound salvia miltiorrhiza injection in the treatment of Henoch-Schonlein Purpura (HSP) associated with stomachache.Method:35 cases of Pedo-HSP were ran- domly divided into two groups.The experimental group was treated with the compound salvia mihiorrhiza injection in addi- tion to the routine treatment and the controlled group received the routine treatment only.Result:The time of relief and dis- appearance of stomachache and average days were much shorter in the experimental group than in the controlled group (p
6.Extracorporeal shock wave therapy, joint mobilization and short wave therapy in treating scapulohumeral periarthritis
Ning ZHOU ; Bin SHOU ; Yong CHEN ; Jun PENG ; Xiang YUE
Chinese Journal of Physical Medicine and Rehabilitation 2010;32(1):38-40
Objective To compare the immediate effects of extracorporeal shock wave therapy with that of joint mobilization plus short wave therapy in treating scapulohumeral periarthritis, and to elucidate the mechanism of extracorporeal shock wave therapy and how it should be used. Methods Forty-seven patients diagnosed with scapulohumeral periarthritis were selected and randomized into two groups, a treatment group (n = 26) treated with extracorporeal shock wave therapy, and a control group ( n = 21 ) treated with joint mobilization plus short wave therapy. The short form of the McGill pain questionnaire (SF-MPQ) and range of motion (ROM) measurements were used to evaluate shoulder function. Results Compared with baseline, both groups improved significantly af-ter treatment, but the immediate effect in the treatment group was superior to that in the control group. Concln-sions As a safe, time-saving and effective therapy, extracorpnreal shock waves could be used to treat scapulo-humeral periarthritis.
10.Investigation on occupational norma hexane poisoning accident in population.
Zu-ying HU ; Jian-yong CHEN ; Ning-xiang ZHANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2006;24(7):447-447
Accidents, Occupational
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Adolescent
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Adult
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Female
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Hexanes
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poisoning
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Humans
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Male