2.Evaluate the security of the treatment of a new bioartificial liver system with experimental pig model
Longhui XIONG ; Guolin HE ; Zhi ZHANG ; Yan WANG ; Mingxin PAN ; Yi GAO
Chongqing Medicine 2014;(9):1038-1040
Objective To evaluate the security of big animals with a new bioartificial liver system .Methods Six Tibet pigs re-spectively received treatment of hybrid artificial liver and simple bioartificial liver ,observed and recorded the vital signs ,venous pressure ,transmembrane pressure and slurry pot pressure each hour ,and collected blood to make endotoxin and bacterial culture test in the zero hour ,fourth and eighth hour .Results Compared with the zero hour ,venous pressure ,transmembrane pressure ,slur-ry pot pressure were much higher in the fifth hour (P< 0 .05) ,and there were no significant difference in the rest of other time points(P>0 .05) .The mean arterial pressure and respiratory rate in all time point showed no significant changes (P>0 .05) .Com-pared with the zero hour ,the heart rate was much lower in the second hour (P<0 .01) .The values of blood endotoxin were less than 0 .5 EU/mL in the zero hour ,fourth and eighth hour from beginning ,and the bacterial culture test showed no growth of bacteria . Conclusion The experiment of big animals with a new bioartificial liver system was safe ,the efficacy in the treatment of hepatic failure could be assessed further .
3.Effect of Psoraleae Fructus and Myristicae Semen in "Ershen pill" on serum metabonomics in spleen-kidney Yang deficiency diarrhea rats before and after processing.
Zhi-min CHEN ; Chang-jiang HU ; Rui XIONG ; Yuan-yuan CUI ; Mei ZHANG ; Xin PAN ; Ling ZHAO
China Journal of Chinese Materia Medica 2015;40(7):1400-1403
The metabonomics method was used to study the intervention effect of Psoraleae Fructus and Myristicae Semen in "Ershen pill" on the changes in serum endogenous metabolites in spleen-kidney Yang deficiency diarrhea rats before and after processing, screen out differentiated metabolites related to spleen-kidney Yang deficiency diarrhea and explore the metabolic patterns related to spleen-kidney Yang deficiency diarrhea and the processing synergy mechanism of Psoraleae Fructus and Myristicae Semen in "Ershen pill". Efforts were made to detect SOD and MDA of each group, test rat serum metabolic fingerprints in different stages by using GC-MS, analyze by PCA and PLS-DA methods and screen out potential biomarks through VIP and t test. The results revealed that "Ershen pill" could enhance the level of SOD and decrease the level of MDA and identified 10 differentiated metabolites related to spleen-kidney Yang deficiency diarrhea. Compared with the model group, all of metabolites recovered to varying levels after being intervened with "Ershen pill", with the best effect shown in the "Ershen pill" IV group (salt-processed Psoraleae Fructus + bran-roasted Myristicae Semen). It is speculated that that Psoraleae Fructus and Semen Myristicae in "Ershen pill" show a synergistic effect by inhibiting peroxide, improving aglucolipid, amino acids and energy metabolism, with multiple target sites.
Animals
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Chemistry, Pharmaceutical
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Diarrhea
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drug therapy
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metabolism
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physiopathology
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Drugs, Chinese Herbal
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administration & dosage
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chemistry
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Energy Metabolism
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drug effects
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Humans
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Kidney
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drug effects
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metabolism
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Male
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Metabolomics
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Myristicaceae
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chemistry
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Psoralea
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chemistry
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Rats
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Rats, Sprague-Dawley
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Spleen
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drug effects
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metabolism
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Yang Deficiency
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drug therapy
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metabolism
4.An introduction of the principle for the middleware based on HL7.
Zhi-sheng CHEN ; Jin-xiong CHEN ; Lun YU ; Lin PAN
Chinese Journal of Medical Instrumentation 2006;30(4):258-260
This article introduces the development of a middleware based on HL7, which solves the problem of data integration and sharing effectively and successfully, among the hospital internal subsystems and different hospitals' information systems.
Computer Communication Networks
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standards
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Computer Systems
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Hospital Information Systems
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standards
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Humans
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Information Services
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Information Systems
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Medical Records Systems, Computerized
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Software
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Systems Integration
5.Construction of a regional information system based on standardization and middleware platform.
Jin-xiong CHEN ; Xiong-fei LIU ; Lun YU ; Lin PAN ; Zhi-sheng CHEN ; Hui LIU
Chinese Journal of Medical Instrumentation 2006;30(4):250-252
In this article, based on the analysis on the regional information system's development background and its applications, the construction of the regional medical information system through creating the electronic medical record and the medicine image data centers is proposed, for information resource sharing. And then, the system's software construction and various subsystems functions are mainly introduced. Standardization and the middleware platform are suggested as the effective way of constructing these two data centers in the present situation in our country.
Computer Security
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Computer Systems
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Hospital Information Systems
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Humans
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Medical Records Systems, Computerized
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Radiology Information Systems
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Software
6.Clinical observations of emergent PTCA combined with Lipo-PGE_1 for the young patients with acute myocardial infarction
Sun-Qi GUO ; Ping CHEN ; Zhi-Dan ZHU ; Zhi-Xiong CAI ; Wen-Liang WANG ; Liang-Yu WANG ; Sheng-Qing PAN ; Hou-Shi ZHOU ;
Chinese Journal of Primary Medicine and Pharmacy 2006;0(07):-
Objective To evaluate the clinical effect in the treatment of the young patients(≤45 years old) with acute myocardial infarction(AMI)underwent emergent percutaneous transluminal coronary angioplasty(PTCA) combined with Lipo-PGE_1.Methods 39 patients with AMI(paroxysm within 12 hours),were underwent emergent PTCA(coronary stem performed in some patients),including 18 cases which were treated combined with Lipo-PGE_1 in the mean time.And the clinical efficacy and the results of short-period follow-up were recorded.Results The in- farctive vasculars were re-open in 37 patients(23 cares were routinely placed translunrinal srents),and the successful rate was 94.9 %.Those who also used Lipo-PGE_1 were re-open in 17 patients.The successful rate was 94.4 %,their ST segments on EKG 30 minutes after operations reduced significantly than that of patients who did not use Lipo- PGE_1,their cardial functions were also improved significantly 24 hours after operations and no side effects on blood pressure and heart rate were observed.Conclusion The emergent PTCA combined with Lipo-PGE_1 for acute my- ocardial infarction can protect the cardial function and show a better early therapy effect.
7.Analysis of the causes of immediate bleeding after pediatric adenoidectomy.
Hong-guang PAN ; Lan LI ; Yong-tian LU ; De-lun ZHANG ; Xiang-yu MA ; Zhi-xiong XIAN
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2011;46(6):491-494
OBJECTIVETo evaluate the incidence of postoperative hemorrhage in children undergoing adenoidectomy, and to discuss its possible causes.
METHODSIncluded in this study were children who underwent adenoid and/or tonsil surgery at Shenzhen Children's Hospital between January 2004 and November 2009. The change of hemoglobin (Hb) and hematocrit (Hct) were retrospectively analysed. The blood loss was estimated by the change of Hct.
RESULTSThere were 2078 cases that accomplished the inclusion criteria in the period of study. Ten children bled 0.5 - 4.0 hours after surgery, without superfluous hemorrhage during the operation and post-tonsillectomy. This represented an incidence of 0.48%of immediate postoperative haemorrhage among the 2078 procedures analyzed. Statistical differences were found between boys (0.21%) and girls (1.10%, χ² = 5.597, P < 0.05). The change of Hb and Hct was positively correlated (r = 0.95, P < 0.01), the blood loss was positively correlated with the bleeding time (r = 0.66, P < 0.05). The causes of postoperative hemorrhage were coagulation system deficits, chronic nasopharyngitis, deficient hemostasis and immoderate ravage. To control the postoperative hemorrhage, 2 postnasal packing under topical anaesthesia and 8 electrocautery under general anaesthesia were applied.
CONCLUSIONSPoor operative technique and deficient hemostasis are the major causes of primary hemorrhage. Prompt operation to control the postoperative bleeding should be done 2 hours after bleeding under general anesthesia in order to avoid severe complications.
Adenoidectomy ; adverse effects ; Adolescent ; Child ; Child, Preschool ; Female ; Hematocrit ; Hemoglobins ; analysis ; Humans ; Infant ; Male ; Postoperative Hemorrhage ; etiology ; Retrospective Studies ; Tonsillectomy ; adverse effects
8.Construction of recombinant plasmid containing mouse vasoactive intestinal peptide gene and its expression in COS-7 cells.
Song-zhao ZHANG ; Jian-gen SHEN ; Zhi-xiong LIAO ; Jian-ping PAN
Journal of Zhejiang University. Medical sciences 2005;34(2):148-151
OBJECTIVETo construct the eukaryotic expression plasmid containing mouse vasoactive intestinal peptide(VIP) gene with biological activities.
METHODSVIP cDNA including the sequences of signal peptide was cloned from mouse thymus by RT-PCR, and then inserted into the mammalian expression vector pcDNA3.1 between Hind III and EcoR I restriction sites. COS-7 cells were transfected with pcDNA3. 1-VIP using liposome, the expression of VIP was identified by Western blot and ELISA. Supernatant of transfected cell culture was added to LPS-stimulated macrophages and the TNF-alpha production in cell medium was observed by ELISA.
RESULTSThe cloned VIP cDNA was confirmed by enzyme digestion and DNA sequencing. The expression of VIP was detected in the pcDNA3. 1-VIP transfected COS-7 cells by Western blot and ELISA. The VIP in culture supernatant potently inhibited TNF-alpha production by LPS-induced Macrophages in vitro.
CONCLUSIONThe eukaryotic expression plasmid that expresses biological active murine VIP has been constructed successfully.
Animals ; Base Sequence ; COS Cells ; Cercopithecus aethiops ; Cloning, Molecular ; DNA, Complementary ; genetics ; Eukaryotic Cells ; metabolism ; Mice ; Molecular Sequence Data ; Plasmids ; Recombinant Proteins ; biosynthesis ; genetics ; Recombination, Genetic ; Reverse Transcriptase Polymerase Chain Reaction ; Vasoactive Intestinal Peptide ; biosynthesis ; genetics
9.Experimental study of saikosaponin-D (SSd) on lipid peroxidation of hepatic fibrosis on rat.
Yan HE ; Zhi-Feng HU ; Ping LI ; Cheng XIAO ; Yu-Wu CHEN ; Ke-Ming LI ; Jing-Zhen GUO ; Lin PAN ; Jia-Peng XIONG
China Journal of Chinese Materia Medica 2008;33(8):915-919
OBJECTIVETo study the effect of SSd on lipid peroxidation during experimental hepatic fibrosis progression.
METHODThe experimental models of hepatic fibrosis were induced by intraperitoneal injection of dimethylnitrosamine (DMN) on rats. SSd was administered by intraperitoneal injection for 4 weeks. Serum was analyzed for alanine and aspartate aminotransferase (ALT and AST), hyaluronic acid (HA), laminin (LN), collagen IV (IV-C), malonaldehyde (MDA) and superoxide dismutase (SOD) activities. Liver samples were measured for MDA contents and SOD activities in normal group, model group and SSd group.
RESULTSSd significantly decreased ALT and AST activities and lowered HA, LN and IV-C contents. It enhanced SOD activities in liver, while reduced MDA contents both in serum and liver.
CONCLUSIONSSd has obvious effects of protecting hepatocytes and resisting hepatic fibrosis, and the mechanism may be associated with its anti-lipid peroxidation effect.
Animals ; Aspartate Aminotransferases ; blood ; Collagen Type IV ; blood ; Dimethylnitrosamine ; adverse effects ; Hyaluronic Acid ; blood ; Laminin ; blood ; Lipid Peroxidation ; drug effects ; Liver Cirrhosis ; blood ; chemically induced ; drug therapy ; metabolism ; Malondialdehyde ; blood ; Oleanolic Acid ; analogs & derivatives ; pharmacology ; therapeutic use ; Rats ; Saponins ; pharmacology ; therapeutic use ; Superoxide Dismutase ; blood
10.Biotoxicology and biodynamics of silica nanoparticle.
Zhi-gang XUE ; Shai-hong ZHU ; Qian PAN ; De-sheng LIANG ; Yu-mei LI ; Xiong-hao LIU ; Kun XIA ; Jia-hui XIA
Journal of Central South University(Medical Sciences) 2006;31(1):6-8
OBJECTIVE:
To investigate the toxicology and biodynamics of silica nanoparticle.
METHODS:
The silica nanoparticles were injected into mice through tail vein, and the mice were amphimixised, the urine was collected in different time, variations of pathology in organs and tissues of the mice were detected. At the same time, the silica nanoparticles' distribution in the tissues was observed through electron microscope.
RESULTS:
The silica nanoparticles were detected in all tissues and urine of the mice. The injected mice can reproduce as normal.
CONCLUSION
The silica nanoparticles do not have toxicity and can be used in vivo.
Animals
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Female
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Male
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Materials Testing
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Mice
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Nanostructures
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toxicity
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Rats
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Silicon Dioxide
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pharmacokinetics
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toxicity
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Tissue Distribution
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Transfection