1.Advances of high intensity focused ultrasound therapy for primary hepatic carcinoma
Ring SU ; Wen-Zhi CHEN ;
Cancer Research and Clinic 2006;0(09):-
Primary Hepatic Carcinoma(PHC)is one of the most common malignant tumors in the world.Nowadays,its incidence and mortality have been still increasing.With regard to the early treatment for PHC,the combined therapy,primarily referred to operation,is considered optimal.For recent decades,with the quick development of ultrasonic therapeutics,High Intensity Focused Ultrasound(HIFU)techniques,which rose newly,has already become a kind of effective and noninvasive substitution therapy for PHC operation therapy as a kind of noninvasive tumor therapy.Now,this literature review aims to summarize the found re- search and clinical research of HIFU therapy for primary hepatic carcinoma.
2.Establishment of a cell line of Tca8113 with stable expression of nm23-H1 by gene transfection
Keqian ZHI ; Weihui CHEN ; Yuming WEN
Journal of Practical Stomatology 2000;0(06):-
Objective:To establish a tongue cancer cell line that stably overexpresses nm23-H1.Methods:The reconstructed plasmid, pCMV-BamH1-Neo-nm23-H1, was transfected into bacteria and amplified. The plasmid was identified by electrophoresis on a 10 g/L agarose gel and stained with ethidium bromide and then transfected to the cell line of Tca8113 by lipofectin strategy and was selected by G418 for 5 weeks. The stable expression of nm23-H1 was identified by immunofluorescence,Western-blotting and flow cytometer.Results:Restriction endonuclease Bam H1 examination showed that 986 bp of nm23-H1 was in pCMV-Bam-Neo vector. 5 weeks after transfection positive clones were obtained and the transfected cells were proliferated to confluent.Immunohistochemical examination,Western blot and flow cytometry showed that nm23-H1 expression was increased in the transfected cells.Conclusion:A tongue cancer cell line expressing nm23-H1 is established.
3.The effect of zinc on the apoptosis of cultured human retinal pigment epithelial cells.
Wen, CHEN ; Zhi, WANG ; Ying, ZHANG
Journal of Huazhong University of Science and Technology (Medical Sciences) 2003;23(4):414-7
To clarify the effects of zinc on the proliferation and apoptosis of cultured human retinal pigment epithelia (RPE) and the expression of caspase-3 in RPE cells. The effect of Zinc on the proliferation of RPE were examined with MTT method. TUNEL method was used to detect the apoptosis of RPE cells. Caspase-3 was detected by immunohistochemistry. A concentration of zinc higher than 0.001 microM could inhibit the proliferation of RPE. And the relationship between concentration of zinc higher than 10 microM and growth prohibition rate of RPE cells was dose-dependent. All concentrations of zinc including 0.001 microM enhanced the expression of caspase-3 of RPE. But only the concentration of zinc higher than 0.01 microM could induce apoptosis of RPE. It is concluded that zinc could enhance the expression of caspase-3 of RPE cells and induce apoptosis of RPE cells. Caution should be taken when using zinc supplements for the treatment of ARMD patients without deficiency of zinc.
Apoptosis/*drug effects
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Caspase 3
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Caspases/metabolism
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Cell Division/drug effects
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Cells, Cultured
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Dose-Response Relationship, Drug
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Pigment Epithelium of Eye/*cytology
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Zinc/*pharmacology
4.The role of preoperative selective embolization for intracranial huge meningiomas
Wen CHEN ; Junwen WANG ; Lei WANG ; Zhi CHEN ; Jun LI
Chongqing Medicine 2014;(23):2986-2987,2990
Objective To explore the role of the preoperative DSA examination and selected embolization in surgical treatment of intracranial huge meningiomas .Methods The clinical materials of 13 patients was collected and analyzed .Preoperative DSA was carried out in all cases ,10 of 13 underwent selected preoperative embolization ,the meningiomas were totally excised by surgery 4 to 7 days after the embolization .Results After the embolization ,DSA showed that the blood fed to the tumors was completely blocked in 8 cases ,and in great part in 2 cases .All tumors were totally removed ,the bleeding during operation was significantly decreased in patients who underwent preoperative embolization compared to the patients without embolization (P<0 .05) .Necrosis in different degree of meningiomas was found in postoperative pathological examination .There were no severe complications occurred during and after operations in all patients .Conclusion Preoperative selective embolization could significantly decrease the bleeding during operations .
5.Literature review on premarketing and postmarketing evidence of xiyanping injection.
Zhi-Fei WANG ; Xiao CHEN ; Wen ZHANG ; Yan-Ming XIE
China Journal of Chinese Materia Medica 2014;39(18):3637-3640
This article systematically summarizes the non-clinical safety studies, pharmacological studies and postmarketing safety studies of Xiyanping injection based on literature. These studies include acute toxicity test, long-term toxicity test, reproductive toxicity test, active and passive anaphylaxis test, curative mechanism study, clinical trials of effectiveness, active surveillance, security analysis of passive monitoring data, the real world analysis of hospital information system (HIS) data, literature analysis, etcetera This article also analysis the relationship of the different evidence, summarizes the strategy of the researches, in order to make it to be a reference for making a systemic research program of traditional Chinese medicine injection.
Drugs, Chinese Herbal
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administration & dosage
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adverse effects
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Injections
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Medicine, Chinese Traditional
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methods
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Product Surveillance, Postmarketing
6.The study of increased sensitivity to cisplatin by nm23-H1 in vitro
Keqian ZHI ; Weihui CHEN ; Yuming WEN ; Zhuangqun YANG
Journal of Xi'an Jiaotong University(Medical Sciences) 1981;0(02):-
Objective To study the mechanism of increased sensitivity to cisplatin by nm23-H1.Methods The plasmid,pCMV-BamH1-Neo-nm23-H1,was transfected to cell line Tca8113 by lipofection strategy and was selected by G418 for 5 weeks.The stable products of nm23-H1 gene were identified by Immunohistofluorescence and Western-blotting.Using MTT and flow cytometer,we detected the changes of cell mortality rate,apoptosis and mitochondrial membrane potential.Results We successfully established the cell line of stable overexpression of nm23-H1.In vitro,the cell mortality rate and apoptosis were increased significantly in stable expression cell line of nm23-H1,compared with those in Tca8113 cell line of non-transfection;this effect could be inhibited by oubain which is an inhibitor of Na(+)/K(+)-ATPase.Mitochondrial membrane potential was decreased significantly in stable expression cell line of nm23-H1.Conclusion Nm23-H1 can increase the sensitivity of cisplatin on Tca8113 cell line;The mechanism may be the mitochondrial membrane potential is decreased by nm23-H1 so that intracellular platinum are increased to finally cause the apoptosis and necrosis of cells.
10.Survey on the knowledge, attitudes and behavior for foodborne disease in medical staff
Zhi CHEN ; Zihang ZHU ; Wen ZHOU ; Shaozhen YU
Chinese Journal of Behavioral Medicine and Brain Science 2014;23(2):159-161
Objective To investigate the knowledge,attitude and behavior of medical staffs on foodborne diseases.Methods To investigate the knowledge,attitude and behavior of medical staffs on foodborne diseases by random sampling following the questionnaire.Results There were 332 medical workers attending the survey.The medical staffs were lack of knowledge for foodborne disease,percent of pass was 34.33%.The pass rate of attitude and behavior were 88.88% and 98.19%.The knowledge score of medical staff of top three hospital (6.49± 2.18)were lower than the community health service center(7.04±2.26) (P<0.05),but attitude and behavior score of this two staffs had not statistical differences(P>0.05).Conclusion It is necessary to help medical staff to improve the attitude of foodborne diseases,and improve the monitoring of underreporting case.