2.Perioperative Managements of Congenital Heart Disease in Infants
hong, ZHANG ; chao-guang, WU ; ru-zheng, LI ; ping, HONG
Journal of Applied Clinical Pediatrics 2006;0(14):-
Objective To explore the perioperative experiences of congenital heart disease in infants.Methods From Jan.2000 to Aug.2006,109 patients with congenital heart disease were operated in our department,their clinical data were retrospectively collected and analyzed.The patients′ age ranged from 31 days to 3 years old (13.6 months).The body weight ranged from 2.1 to 16 kg (8.6 kg).Ninety-three patients were operated under hypothermic anaesthesia with cardiopulmonary bypass(CPB).Sixteen patients underwent deep thermal and low flow CPB.Ultrafiltration was used in 62 patients.Results There were 8 deaths and the operative mortality was 7.3%,4 cases caused by low output syndromeclos(LOS),3 cases caused by pulmonary hypertension and 1 case caused by lung intection.The morbidity was in 25 cases(22.9%),the main complications were LOS in 6 patients and respiratory complications in 18 patients,hydropericardium in 1 case,respectively.Conclusion To improve the operative and CPB technique,and to improve the skills of the postoperative managements of LOS and respiratory complications are the main points in the success of the cardiac operation in infants.
3.Construction of the Expression Vector of Viruslike Particles Containing FMDV IRES RNA
Min DOU ; GuoGuang ZHANG ; GuangFu YU ; HongXin ZHANG ; MingShan SHEN ; Liang CHEN ;
China Biotechnology 2006;0(09):-
The Coat protein and Maturase gene of E.coli bacteriophage MS2 was amplified by PCR,then the gene was cloned into pET32a to construct the intermediate vector pET32aCP.The conservative sequence of FMDV internal ribosome entry site(IRES) was cloned into the downstream of pET32aCP bacteriophage gene to construct the prokaryotic expression vector pCPES.The recombinant plasmid pCPES transformed into E.coli strain BL21(DE3) was induced to express with 1mmol/L IPTG.The expression products were purified by sucrose density gradient centrifugation.The expression products observed by TEM were circular viruslike particles,and the diameter of these particles was about 26nm.The stability of viruslike particles was detected,and the viruslike particles was identified by RTPCR.The results showed that the viruslike particles contain the FMDV IRES RNA and have good stability.The viruslike particles have great prospect as the standard and quality control in the area of RNA virus detection.
4.The TGF-β signaling pathway induced EMT in breast cancer.
Yan MA ; Hong LIU ; Hao ZHANG ; Rong-guang SHAO
Acta Pharmaceutica Sinica 2015;50(4):385-392
Epithelial-mesenchymal transition (EMT) refers to tne transition during which epithelial cells undergo the loss of apical-basal polarity, acquisition of migration capability and transformation into mesenchymal cells. EMT induces breast cancer in situ to developing into metastasis and associates with the drug resistence. The multiple elements including signal pathways, transcriptional factors and downstream genes orchestrate the transition. Among them, the transforming growth factor β (TGF-β) signaling pathway plays a key role in the regulation of EMT in breast cancer. And this paper reviews the development of TGF-β signaling pathway induced EMT in breast cancer.
Breast Neoplasms
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metabolism
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Epithelial Cells
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Epithelial-Mesenchymal Transition
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Humans
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Signal Transduction
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Transcription Factors
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Transforming Growth Factor beta
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physiology
5.Observation of Efficacy and Safety of Chemotherapy on Hemophagocytic Lymphohistiocytosis with Hepatic Dysfunction in Children
chen-guang, JIA ; shuang, YANG ; li, ZHANG ; hong-hao, MA
Journal of Applied Clinical Pediatrics 1993;0(03):-
Objective To preliminarily evaluate the efficacy and safety of chemotherapy on hemophagocytic lymphohistiocytosis(HLH) with hepatic dysfunction in children.Methods The children diagnosed as non-malignancy-associated HLH from Mar.2004 to Apr.2008 were selected,and the therapeutic effect was evaluated according to the HLH-04 protocol at the 8th week of chemotherapy,and the level of serum alanine aminotransferase(ALT),serum albumin(Alb) and plasma fibrinogen(Fib) were detected at pretherapy,2 weeks and 8 weeks of post-treatment.Results Altogether 60 HLH children complicated with hepatic dysfunction before chemotherapy,47 children had increased ALT,58 children had decreased Alb,and 38 children had decreased Fib.Forty-two cases(70%) were virus-associated HLH,1 case(1.7%) was fungi-associated HLH,and 17 cases(28.3%) had unknown origin.Among the 60 children,55 cases showed improvement in the 4 weeks of inductive treatment,15 cases gave up therapy,45 cases completed the 8 weeks of inductive treatment according to the protocol(among these children,42 cases had no active disease,3 cases had active disease),and these 45 children had obviously improved ALT,Alb and Fib at 2 weeks and 8 weeks of post-treatment,compared with pretherapy,the differences had statistical significance(Pa
6.Determination of clonidine in rabbit plasma by HPLC-MS.
Guang-ming KE ; En-hong ZHANG ; Li WANG ; Qiang ZHANG ; Hong-guang DU ; Hong-you GUO
Acta Pharmaceutica Sinica 2004;39(5):367-369
AIMTo determine clonidine in rabbit plasma by LC-MS.
METHODSThe LC-MS system consisted of Waters Alliance 2790 HPLC and Micromass ZQ-4000 MS. The HPLC was performed by using XTerra C18 (150 mm x 2.1 mm ID, 5 microm). The mobile phase, consisting of acetonitrile/ammonium hydrogen carbonate solution, was maintained to a flow-rate of 0.2 mL x min(-1) and the linear gradient elution was adopted. Mass spectrum was obtained by using electrospray ionization interface and the m/z of SIM was 230.
RESULTSThe average recovery was high and the method was reproducible. The calibration curve showed good linearity in the range of 1 - 80 microg x L(-1), the lowest limit of detection was 0.05 microg x L(-1). The Cmax, AUC0-t, and Tmax value of the pharmacokinetics parameter were (27 +/- 9) microg x L(-1), (5,352 +/- 1,121) microg x L(-1), (79 +/- 17) h.
CONCLUSIONThe results demonstrated that the method had high sensitivity, good selectivity, accuracy and precision. It is used to determine the clonidine concentration in plasma. The transdermal patch can deliver clonidine to the surface of rabbit skin stably for periods of up to 1 week after a single application.
Administration, Cutaneous ; Animals ; Antihypertensive Agents ; administration & dosage ; blood ; pharmacokinetics ; Area Under Curve ; Chromatography, High Pressure Liquid ; methods ; Clonidine ; administration & dosage ; blood ; pharmacokinetics ; Rabbits ; Spectrometry, Mass, Electrospray Ionization ; methods
7.Comparison of the characteristics of coronary artery disease between first-degree relatives and non-first-degree relatives of patients with type 2 diabetes
Weiqiong GU ; Yifei ZHANG ; Jie HONG ; Ying CHEN ; Yu ZHANG ; Yuwen ZHANG ; Xiaoying LI ; Guang NING
Chinese Journal of Endocrinology and Metabolism 2009;25(4):374-377
y screen and prevent CAD in these people before diabetes sets in.
9.Inhibitions of SphK1 inhibitor SKI II on cell cycle progression and cell invasion of hepatoma HepG2 cells.
Cai-Xia ZHANG ; Hong LIU ; Yu-Yan GONG ; Hong-Wei HE ; Rong-Guang SHAO
Acta Pharmaceutica Sinica 2014;49(2):204-208
Sphingosine kinase 1 (SphK1) plays critical roles in cell biological functions. Here we investigated the effects of SphK1 inhibitor SKI II on hepatoma HepG2 cell cycle progression and invasion. Cell survival was determined by SRB assay, cell cycle progression was assayed by flow cytometry, the ability of cell invasion was measured by Matrigel-Transwell assay and protein expression was detected by Western blotting. The results showed that SKI II markedly inhibited HepG2 cell survival in a dose-dependent manner, induced G1 phase arrest in HepG2 cell and inhibited cell invasion. SKI II markedly decreased the expressions of G1-phase-related proteins CDK2, CDK4 and Cdc2 and the levels of cell invasion-associated proteins MMP2 and MMP9. The results showed that SKI II inhibited cell cycle progression and cell invasion, implying SphK1 as a potential target for hepatoma treatment.
CDC2 Protein Kinase
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Cell Movement
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drug effects
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Cell Survival
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drug effects
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Cyclin-Dependent Kinase 2
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metabolism
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Cyclin-Dependent Kinase 4
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metabolism
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Cyclin-Dependent Kinases
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metabolism
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G1 Phase
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drug effects
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Hep G2 Cells
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Humans
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Matrix Metalloproteinase 2
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metabolism
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Matrix Metalloproteinase 9
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metabolism
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Phosphotransferases (Alcohol Group Acceptor)
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antagonists & inhibitors
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Thiazoles
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pharmacology
10.Inflammatory reaction changes with aging in kidneys of human TIMP-1 transgenic mice
Xue-Guang ZHANG ; Xiang-Mei CHEN ; Quan HONG ; Xi-Yao SHANG ; Suo-Zhu SHI ; Zhong YIN ; Guang-Yan CAI
Chinese Journal of Geriatrics 2003;0(12):-
Objective To explore the role of tissue inhibitor of metalloproteinase-1(TIMP-1) during renal senescence by using human TIMP-1 transgenic mice.Methods Renal histological changes of wild type mice and transgenic mice at the age of 3,12,24 months were observed by periodic acid-schiff(PAS)staining of paraffin sections.The numbers of F4/80 positive cells were detected by immunofluoreseence.The protein expressions of TIMP-1,TIMP-2,matrix metalloproteinase(MMP)-9,MMP-2,intercellular adhesion molecule-1(ICAM-1),transforming growth factor?1(TGF-?1),collagenⅢand collagenⅣwere detected by Western blot.The activities of gelatinases and TIMP-1 were examined by gelatin zymography and reverse zymography respectively.Results Focal renal fibrosis was found in two genotypes with aging.At the age of 24 months,compared with wild type,in kidneys of transgenic type,the expressions and activities of gelatinases were dowregulated (MMP-2:2.08?0.20 vs.3.39?0.43;MMP-9:4.02?0.82 vs.6.72?1.40,all P<0.05);the expressions of collagenⅢ,collagenⅣ,ICAM-1,and TGF-?1 were upragulated(0.72+0.11 vs.0.57?0.09;0.84?0.13 vs.0.6?0.11,0.72?0.12 vs.0.53?0.07; 0.69?0.12 vs.0.45?0.09,all P<0.05),and the numbers of F4/80 positive cells were increased (18.8?4.4 vs.12.7?3.6,P<0.05)with the upregulated expression and activity of TIMP-1(1.10?0.18 vs.0.62?0.09;50.75?7.25 vs.20.64?3.50,P<0.05).Conclusions TIMP-1 could promote age-related renal fibrosis through enhancing inflammation reaction by ICAM-1 upregulation.