1.Achievements inspection empirical study of universities and colleges — taking a medical college as example
Jian-ying LIU ; Yan DOU ; Zhu YANG ; Chen XU ; Di-long CHEN ; Han LEI ;
Chinese Journal of Medical Education Research 2011;10(9):1027-1030
The achievements inspection and the drive standard of our country' universities and colleges is unscientific.The inspection result and the incentive mechanism have a lot of questions.Based on some medical university,the author analyzed the indicator system's construction,proposed displaying school culture guidance value,construcing the easy and feasible achievements inspection indicator system and completing measures and so on to better inspection feedback.
2.The expression of chemerin and chemerin receptor in rats with methionine-and choline-deficient diet induced nonalcoholic fatty liver disease
Shuang LIU ; Qiang ZHANG ; Jian HUANG ; Hui WANG ; Rongfeng ZHU ; Di ZHANG ; Jian YANG ; Libin ZHOU ; Ying YANG ; Mingdao CHEN
Chinese Journal of Endocrinology and Metabolism 2010;26(7):550-554
Objective To explore the expression of chemerin and chemerin receptor ( chemokine-like receptor 1, CMKLR1) during different periods of non-alcoholic fatty liver disease ( NAFLD) rat model induced by methionine- and choline-deficient ( MCD) diet. Methods Thirty-six Wistar rats were divided into control group and MCD group in random. After one week quarantine and acclimation period, these two groups were fed either normal chow or MCD diet. The animals were respectively sacrificed at the first week, the forth week, and the tenth week. The levels of alanine transaminase (ALT), blood lipid profile, liver function, and the content of triglyceride in liver were detected. HE staining was done to observe the morphologic change of liver. The mRNA expression changes of chemerin and CMKLR1 in liver were measured using real-time PCR, and the change in chemerin mRNA level was further confirmed in liver by Northern blot. Finally, the concentration of chemerin in serum was measured by Western blot. Results The mRNA level of chemerin decreased significantly after four and ten weeks MCD feeding, although no obvious changes were found at first week, similar changes were found in serum chemerin (1.00±0.11 vs 0.96±0.39; 1.00±0.12 vs 0.21 ±0.77; 1.00±0.42 vs 0.21 ±0. 11). Contrasting with the change of chemerin(1.00±0.08 vs 0.72±0.10;1.00±0.24 vs 0.63±0. 31 ;1.00±0.05 vs 0.50±0.13), the mRNA level of CMKLR1 increased after MCD feeding( 1.00±0. 14 vs 0. 84±0. 26; 1.00±0. 38 vs 1. 51 ±0. 33; 1. 01 ±0. 13 vs 1. 84 ± 0. 39 ). Conclusion The change of chemerin and its receptor may participate in the process of the nonalcoholic fatty liver disease.
3.Fusion Expression of Cecropin X Including the Cleavage of FXa in Escherichia coli
Liu-Di YUAN ; Fei DOU ; Yu-Pu LIANG ; Wei XIE ; Fang WANG ; Shuang-Quan ZHANG ; Zhu-Ying DAI
Chinese Journal of Biotechnology 2000;16(3):411-414
PCR method was used to introduce the code sequence of Factor Xa cleavage site to the 5′ end of cecropin CMIV mutant gene X, then the gene was cloned into the expression vector pGEX-KG, and was highly expressed in E. coli BL21 by IPTG induction. The fusion protein was purified by affinity-chromatography and was cleaved by Factor Xa. Cecropin X with antibacterial activity was obtained after purified by ion-exchange chromatography.
4.Analysis of the efficacy of cinepazide maleate injection on acute cerebral ischemic stroke
Si-Yuan ZHU ; Ying-Ying YAN ; Zhan-Miao YI ; Suo-Di ZHAI
The Chinese Journal of Clinical Pharmacology 2017;33(20):2081-2083,2088
Objective To systematically review the efficacy of cinepazide maleate injection in the treatment of the acute Cerebral Ischemic Stroke.Methods We searched the PubMed,EmBase,Cochrane Central Register of Controlled Trials,Clinical Trials,CNKI,Wanfang Database,VIP and Chinese Bio-Medicine Database from established to Sept.2016.We used RevMan 5.3 software to perform Meta-analysis of National Institute of Health Stroke Scale (NIHSS) score improvement and response rate.The intervention measures of the treatment group were cinepazide maleate injection with basic treatment while which of the control group are basic treatment with placebo,with western medicine injections or with traditional Chinese medicine injections.Results Twenty randomized controlled trials involving 2237 patients were included.The results of meta-analyses:The NIHSS score of treatment group decreased 2.73 more than the control group.The response rate of the treatment group was 1.22 times higher than that of control group.The differences were statistically significant (all P <0.01).Conclusion Cinepazide maleate injection has good efficacy which could decrease the NIHSS score and response rate.
5.A novel KIT gene mutation results in piebaldism.
Wei-ping DENG ; Chun LU ; Guo-xing ZHU ; Qun-di LIN ; Pei-ying FENG
Chinese Journal of Medical Genetics 2005;22(5):545-547
OBJECTIVETo detect gene mutation in proband and his mother from a family with piebaldism.
METHODSDiagnosis of a patient with piebaldism was validated by pathology, ultrastructural examination and the typical clinical manifestation. PCR and DNA sequencing were carried out to detect gene mutation of a family with piebaldism.
RESULTSG1833A transition in the KIT gene was found in the proband of the family with piebaldism. This mutation resulted in V604I substitution in KIT gene. No mutation was found in 100 normal individuals and other family members.
CONCLUSIONThe mutation of V604I is the cause of clinical phenotype of the family with piebaldism.
Base Sequence ; Child ; DNA Mutational Analysis ; Female ; Humans ; Male ; Mutation ; Piebaldism ; genetics ; Polymerase Chain Reaction ; Proto-Oncogene Proteins c-kit ; genetics
6.Detection and analysis of partial sequences isolated from human and swine in rural area of southern China.
Xiao ZHANG ; Ying-Jie ZHENG ; Fa-Di WANG ; Mei-Yang GAO ; Jian-Fu ZHU ; Qing-Wu JIANG
Chinese Journal of Epidemiology 2005;26(12):984-987
OBJECTIVETo study the genotype of swines isolated from humans and their relationships with hepatitis E virus (HEV) in the rural areas of southern China.
METHODSSpecimens collected from normal people with HEV-IgM positive, acute hepatitis E patients and from swine in the same area were detected for HEV RNA using RT-nPCR with ORF2 primers. The positive PCR products were cloned and sequenced.
RESULTS13 out of the 132 samples from swine stool, 4 of 26 HEV-IgM positive sera of normal people and 1 of 4 acute hepatitis E patients' stool sample and sera were tested positive for HEV RNA. Data from sequence analysis showed that the identity at nucleotide level was 89.3%-100.0% among the 10 isolates which shared 78.7% - 84.7%, 83.3% - 85.3%, 76.0% - 80.0% and 84.7% - 95.3% nucleotide sequence identity with HEV genotype I, II, III and IV respectively in the region (nt6317- 6466).
CONCLUSIONHEV circulating in humans and swine in the area belonged to genotype IV.
Animals ; China ; Cloning, Molecular ; Feces ; virology ; Genes, Viral ; Genotype ; Hepatitis E ; veterinary ; virology ; Hepatitis E virus ; genetics ; isolation & purification ; Humans ; Immunoglobulin M ; blood ; RNA, Viral ; blood ; Reverse Transcriptase Polymerase Chain Reaction ; Rural Health ; Swine ; Swine Diseases ; virology
7.Changes of Cerebrospinal Fluid ?-Endorphin and C-Reactive Protein in Children with Central Nervous System Infection
xiang-hong, DENG ; ru-zhu, LIN ; wen-ying, LAI ; di-hui, LIU ; ming, LI ; jing, RUAN ; jin-sheng, LIANG ; jian, CHEN
Journal of Applied Clinical Pediatrics 2004;0(09):-
Objective To determine the changes of cerebrospinal fluid(CSF) ?-endorphin(?-EP) and C-reactive protein(CRP) in children with central nervous system(CNS) infection.Methods Sixty-five children suffered from CNS infection were determined the plasma and CSF ?-EP and CRP concentration during the acute and recovering stage with radioimmunoassay, which included 48 viral encephalitis, 12 purulent meningitis and 5 tuberculou meningitis,and 24 non-CNS disease children were as control group.Results The concentrations of plasma and CSF ?-EP of every experimental group were obviously higher than those of control group during the early stage of CNS infection and these were obviously lower during the recovering stage. The serum concentration of CRP during acute stage was significantly higher than that during recovering stage. No change of serum and CSF CRP concentration was determined during either the acute or recovering stage in the other two experimental groups.Conclusions Determining the plasma and CSF ?-EP is mea-(ningful) in early diagnosis of CNS infection,and determining the serum CRP at the same time may be helpful in differentiating septic and inseptic infection.
8.Biotransformation of dehydroepiandrosterone by hairy root cultures of Anisodus tanguticus.
Ying LIU ; Ke-di CHENG ; Ping ZHU ; Wen-hua FENG ; Chao MENG ; Hui-xin ZHU ; Hui-xia HE ; Xiao-jun MA
Acta Pharmaceutica Sinica 2004;39(6):445-448
AIMTo modify the structure of dehydroepiandrosterone (DHEA).
METHODSUsing hairy root cultures of Anisodus tanguticus to perform biotransformation of DHEA, using chromatographic and spectral techniques to isolate and identify the products.
RESULTS(1) The MS medium without plant hormone was suitable for the growth of the hairy root. (2) DHEA was converted into five products: androst-4-ene-3, 17-dione (I); 6alpha-hydroxyandrost-4-ene-3, 17-dione (II); 6alpha, 17beta-dihydroxyandrost-4-ene-3-one (III); androst-4-ene-3, 6, 17-trione (IV) and 17beta-hydroxyandrost-4-ene-3-one (V).
CONCLUSIONIt is the first time to use hairy root cultures of Anisodus tanguticus for the biotransformation of DHEA and five DHEA-related compounds were obtained.
Androstenedione ; chemistry ; isolation & purification ; Androstenes ; chemistry ; isolation & purification ; Biotransformation ; Culture Media ; Dehydroepiandrosterone ; chemistry ; metabolism ; Molecular Structure ; Plant Roots ; metabolism ; Plants, Medicinal ; metabolism ; Solanaceae ; metabolism ; Tissue Culture Techniques
9.Expression and purification of bioactive high-purity human midkine in Escherichia coli.
Zhong-hui ZHANG ; Li-juan DU ; Di XIANG ; Shun-ying ZHU ; Ming-yuan WU ; Hui-li LU ; Yan YU ; Wei HAN
Journal of Zhejiang University. Science. B 2009;10(2):79-86
Midkine is a heparin-binding growth factor, which plays important roles in the regulation of cell growth and differentiation. The non-tagged recombinant human midkine (rhMK) is therefore required to facilitate its functional studies of this important growth factor. In the present work, rhMK was expressed in Escherichia coli (E. coli) BL21 (DE3). The expression of midkine was efficiently induced by isopropyl-beta-D-thiogalactopyranoside (IPTG). After sonication, midkine was recovered in an insoluble form, and was dissolved in guanidine hydrochloride buffer. Renaturation of the denatured protein was carried out in the defined protein refolding buffer, and the refolded protein was purified using S-Sepharose ion-exchange chromatography. The final preparation of the rhMK was greater than 98% pure as measured by sodium dodecylsulfate-polyacrylamid gel electrophoresis (SDS-PAGE) and reverse phase high performance liquid chromatography (RP-HPLC). The purified rhMK enhanced the proliferation of NIH3T3 cells.
Animals
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Base Sequence
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Cell Proliferation
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drug effects
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Cytokines
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biosynthesis
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genetics
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isolation & purification
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pharmacology
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Escherichia coli
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genetics
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Humans
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Mice
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Molecular Sequence Data
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NIH 3T3 Cells
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Recombinant Proteins
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biosynthesis
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isolation & purification
10.Effect of ultra high-pressure processing on microorganisms and ginsenosides of Panax ginseng.
Ling-Ying ZHU ; Yu-De TANG ; Hong SHEN ; Jin-Di XU ; Song-Lin LI
China Journal of Chinese Materia Medica 2013;38(4):564-568
OBJECTIVETo study the feasibility of the application of ultra high-pressure processing (UHPP) as an anticorrosion and anti-mould method by comparing the total numbers of bacteria and mould colonies and the content of ginsenosides before and after UHPP.
METHODThe total numbers of bacteria and moulds colony were determined by microbiological test method. The contents of 12 ginsenosides were determined by HPLC.
RESULTUnder the three selected conditions, the total number of bacterial colony decreased significantly, while the mould was not detected in UHPP samples; and the contents of 12 ginsenosides were increased significantly in methanol extracts and water extracts.
CONCLUSIONUHPP not only shows anticorrosion and anti-mould effects, but also enhances the leaching rate of ginsenosides. It is a highly effective, safe and environmental friendly anticorrosion and anti-mould technique for Ranax ginseng worth in-depth study.
Bacteria ; isolation & purification ; Chromatography, High Pressure Liquid ; Corrosion ; Feasibility Studies ; Ginsenosides ; analysis ; Panax ; chemistry ; microbiology ; Pressure