1.3D visualization technology of medical images and its applications
Chinese Medical Equipment Journal 2003;0(12):-
With the development of the medical imaging and computer aided technology,the trend of the medical imag es visualization from2D to3D is focused.This paper introduces the methods and ke y technology of3D medical images visualization,and discusses its applications to medical diagnoses and clinic therapy.There is a promising direction in the fiel ds of virtual endoscope,computer assisted operation and long-distance operation.
2.Survey on medical insurance expenditure control policy in Shanghai's tertiary first-class hospitals
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(08):-
Objective To investigate the current policy of medical insurance expenditure control in Shanghai and put forward feasible advice. Methods Survey in 5 tertiary first-class hospitals in Shanghai involving 400 doctors and patients was conducted.The result of the questionnaire was tracked with Microsoft Excel 2000.The expense reports during 2001 to 2006 from the Office of Medical Insurance of Shanghai Renji Hospital was collected.All the data were statistically analysed. Results The global budget system was accepted by both the doctors and patients.Charging based on disease categories was proved a relatively satisfying method.Drug expenditure control was concerned by both the doctors and patients. Conclusion Ever since the global budget system of medical insurance is implemented in Shanghai,the medical insurance expenditure has been effectively controlled.The key point is the restraint of irrational consumption during the medical treatment.
3.Determination of ginsenoside Re、Rg1 in Yianhuisheng Oral Liquor by HPLC
Cha LIU ; Minghao ZHANG ; Yu ZHONG
Chinese Traditional Patent Medicine 1992;0(05):-
Objective: To establish a HPLC method for the determination of ginsenoside Re、Rg1 in Yianhuisheng Oral Liquor(Radix Ginseng Rubra, Radix Aconiti Lateralis Preparata, Scorpio etc.) Methods: RP-HPLC was used to quantitative analysis. The Synchropak C 4 column (250mm?4.6mm, 5?m) was used, and mobile phase was composed of acetonitrile-0.05% H 3PO 4(18∶82). Detection wavelength was at 203nm, the flow rate was 1.0 mL?min -1 , the injection volume of sample was 10?L and of reference 8?L. Results: The linear response range from 0.432 ~3.456?g of Re(r=0.9992, n=5), 0.360~2.88?g of Rg1(r=0.9998, n=5), respectively. The recovery of Re: 97.0%, RSD=1.4%, the recovery of Rg1: 96.8%, RSD:=1.1%, respectively. Conclusion: The method was proved to be simple, rapid, accurate and reproducible, and suitable for content determination of the oral liquor.
4.Analysis of negative results of hepatitis B virus markers in healthy population in Hangzhou district
Yuhong ZHONG ; Yu DAI ; Songzhao ZHANG
International Journal of Laboratory Medicine 2015;(17):2482-2484
Objective To analyse the distribution characteristics of negative pattern of hepatitis B virus Markers (HBV‐M ) in healthy population in Hangzhou district in 2014 ,and provide strategy for the prevention and control of HBV infection in HBV‐M negative population .Methods The HBV‐M (HBsAg ,HBsAb ,HBeAg ,HBeAb and HBcAb) in blood specimens of health examina‐tion population were tested by using ELISA .For 300 cases preserved HBV‐M negative specimens ,HBsAg and HBsAb were detec‐ted by using chemiluminescence immunoassay and HBV‐DNA was detected by using PROCLEIX ULTRIO? Assay .The viral load of HBV‐DNA reactive sample was quantitatively determined .Results Among 9 143 blood samples ,2 213 samples were HBV‐M negative ,and the negative rate was 24 .20% .The negative rate of male to female was 1∶1 .21 .Using chemiluminescence immunoas‐says and PROCLEIX ULTRIO? Assay simultaneously ,we found one case of low concentration of HBsAg(both HBsAb and HBV DNA nonreactive) ,four cases of low concentration of HBsAb(both HBsAg and HBV DNA nonreactive) ,two cases of HBV‐DNA reactive(HBV‐M negative) .One HBV‐DNA reactive sample could be quantified as 560 IU/mL .Conclusion In HBV‐M (ELISA) negative population of health examination of Hangzhou district ,a few subjects had low concentrations of HBsAg or HBsAb or HBV‐DNA .For HBV‐M negative population ,quantitative detection of HBV‐M and HBV‐DNA before HBV vaccination is recom‐mended to determine w hether they need HBV vaccine and the HBV vaccination plan .
5.Development of Chinese Software of Loewenstein Occupational Therapy Cognitive Assessment
Shan-gang ZHANG ; Jian-zhong FAN ; Ke YU ; Jianhong ZHANG
Chinese Journal of Rehabilitation Theory and Practice 2006;12(4):287-289
ObjectiveTo develop the manipulation and scoring system of Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) into a Chinese software.MethodsThe manual manipulation and scoring system of LOTCA was developed into a technological procedure and changed into primary product of software through conforming computer programs such as Basic, C, C++ and Flash Maker. The primary product was tested in clinic and feedback suggestions were collected. The questions found during assessment and items with reliability and validity not satisfied were optimized.ResultsThe Chinese software of LOTCA, including mandarin and Cantonese, composed manipulation system, scoring system, administer system and affiliated system. It could run on systems of Windows 2000 and Windows XP.ConclusionThe Chinese software of LOTCA is objective, standard and convenient for clinic.
7.Identification of Host Factors Interacting with the Movement Protein of Apple Chlorotic Leaf Spot Virus by Yeast Two-Hybrid System.
Yikun HE ; Min ZHONG ; Yu ZHANG ; Yanan WANG ; Keqiang CAO
Chinese Journal of Virology 2015;31(2):124-131
In order to identify host factors which interact with the movement protein (MP) of Apple chlorotic leaf spot virus (ACLSV), ACLSV MP was cloned into the bait vector pGBKT7 and used to screen a cDNA library of Malus sylvestris cv. R12740-7A, which had previously been constructed by yeast two-hybrid sequencing transformation. The protein functions of the identified host factors were determined according to their gene annotations in GenBank. The result showed that the bait plasmid pGBKT7-MP showed no virulence or self-activating effect on yeast strain Y2H Gold. Sixty-nine interactor proteins were identified, which were divided into the following 10 classes according to their described functions: hydrolases; pathogenesis-related proteins; DNA binding proteins; phosphatases; ligases; proteins with catalytic activity; phenylalanine ammonialyases; peroxidases; NAD binding proteins; and proteins of unknown function. Bioinformatic analysis of gene homology suggested that phosphatases, pathogenesis-related proteins and glyceraldehyde-3-phosphate dehydrogenase A may play an important role in the interaction between virus and host. This study may provide a theoretical basis for the further study of viral pathogenesis and virus-host interaction mechanisms.
Flexiviridae
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genetics
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metabolism
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Malus
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genetics
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metabolism
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virology
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Molecular Sequence Data
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Plant Diseases
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genetics
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virology
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Plant Proteins
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genetics
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metabolism
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Plant Viral Movement Proteins
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genetics
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metabolism
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Protein Binding
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Two-Hybrid System Techniques
8.Dimethylformamide induced impairment of function of liver and kidney in exposed workers and its effect on lipid metabolism.
Ju-xiang XIANG ; Jian-zhong YU ; Xin-hui ZHANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2007;25(7):404-406
Adolescent
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Adult
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Dimethylformamide
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adverse effects
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Female
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Humans
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Kidney
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drug effects
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physiopathology
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Lipid Metabolism
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drug effects
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Liver
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drug effects
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physiopathology
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Male
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Middle Aged
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Occupational Exposure
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adverse effects
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Young Adult
10.Role of X-box Binding Protein 1 in Acrolein-induced Oxidative Injury of Retinal Pigment Epithelium
Yimin ZHONG ; Jingming LI ; Xin ZHANG ; Jianxin WANG ; Qiang YU
Journal of Sun Yat-sen University(Medical Sciences) 2017;38(1):1-7
[Objective]The oxidative injury of retinal pigment epithelium(RPE)plays a key role in the pathogenesis of age-related macular degeneration(ARMD). This study is to investigate the effects of endoplasmic reticulum stress and the vital transcriptional factor X-box binding protein 1(XBP1)in acrolein-induced oxidative damage of RPE.[Methods]RPE cells were treated with acrolein (75μmol/L)for 2~24 h,expression of glucose regulated protein 78(GRP78)and XBP1 was determined by Western blot analysis. After being transfected with XBP1 siRNA with 24 h,the expression of XBP1 was knocked-down in RPE cells. Protein level of Nrf2 and SOD2 was then determined by Western blot analysis and intracellular Reactive Oxygen Species(ROS)generation was determined by DCF staining. Acrolein was added for 8 h after being transfected with XBP1 siRNA or control siRNA for 24 h. Apoptosis was detected by TUNEL assay before and after the treatment. Subretinal injection of Cre or GFP adenovirus was performed in XBP 1flox mice. After 1 week the mice were sacrificed. Total RNA was extracted from mice eyecups using TRIzol and real-time RT-PCR was performed to determine the two XBP1 down-stream genes,ERdj4 and p58IPK. Cryosectioning and immunofluorescent staining were performed to look at the expression of XBP1,Nrf2 and SOD2 in mice RPE.[Results]Protein level of GRP78 was significantly un-regulated after exposure to acrolein for 2 and 4 h. XBP1 was activated after acrolein treatment for 6 h. Knock-down of XBP1 by siRNA down-regu?lates anti-oxidant genes expression and increased ROS generation in RPE cells. Loss of XBP1 exacerbates acrolein-induced cell apoptosis. XBP1 was knocked-down in the RPE of XBP1flox mice after subretinal injection of Cre adenovirus. Decreased mRNA level of ERdj4 and p58IPK,and decreased Nrf2 and SOD2 expression were seen in the Cre-injected group.[Conclusions]Acrolein induces ER stress and activates XBP1 in RPE cells. Knock-down of XBP1 down-regulates anti-oxidant genes expression ,increases ROS generation,and exacerbates acrolein-induced cell apoptosis. XBP1 plays a role in the anti-oxidant defense in the RPE cells.