1.Effect of rhGH on rat model of postoperative fatigue
Journal of Third Military Medical University 2003;0(16):-
Objective To investigate the effects of rhGH on rat model of postoperative fatigue syndrome (POFS) and to study its mechanism. Methods A total of 36 SD rats were randomly divided into 3 groups. The model group and rhGH group were estalished into the model of POFS by partial resection of the liver, and administrated with the same volume of physiological saline and rhGH, and control group was without any treatment. The behavioral changes and the disorder of nutrition intake after operation, stress reaction (pathological changes of mucous membrane in small intestine) and the liver albumin expression were observed. Results The rhGH could improve behavioral changes of rat model and increase the serum levels of the iron, total protein, albumin and globulin as the index of nutrition, and restore the injury of the mucous membrane resulted from the stress reaction and increase the expression of the liver albumin. Conclusion rhGH can shorten the time of POFS and mitigate POFS of rat model.
2.Establishment and assessment of a model of abdominal postoperative fatigue syndrome in rats
Chinese Journal of General Surgery 1993;0(01):-
Objective To establish and assess a model of abdominal postoperative fatigue syndrome (POFS) in rats. Methods After 70% hepatectomy was performed, the following observations of the animals were made:general condition, rat tail suspension test,weight carrying swim fatigue test,serum levels of albumin,ferrition,and iron,pathologic assessment of injury of small intestinal mucosa and hepatic albumin gene expression .Results After 70% hepatectomy of the rats,their general candition was poor,the level of physical tolerance decreased,they showed a certain amount of depression,and marked changes were found in nutritional index,stress injury of small intestinal mucosa and hepatic albumin gene expression.Conclusions A 70% hepatectomy rat model has the basic characteristics of clinical abdominal POFS, and can be used as an experimental animal model for the study of abdominal POFS.
3.A simple assay for LDL receptor activities in human periphral lymphocytes
Chinese Journal of Pathophysiology 1986;0(03):-
Periphral lymphocytes suspended in RPMI-1640 were incubated in plates of 96 wells for 96 hours with 50 ?g/ml of PHA, various concentrations of LDL-ch and0.6 ?M of mevinolin (experimental) or equal volume of its solvent-dimethyl sulfoxide (control). 6 hours before harvesting cells, 0.5?Ci of ~3H-TdR was added to each well, then cells were harvested and their cpm counted. The LDL receptor activity was expressed as mevinolin-mediated lymphocyte proliferation inhibition rate which can be calculated by the following equation:Percent Inhibition Rate=(1-cpm exp./cpm con.)100%.It was found that the lymphocyte proliferation inhibition rate at 5?g/ml of LDL-ch was less than 20% for normal and non-FH hyperlipidemic subjects, 25-55% for FH heterozygotes and over 60% for FH homozygotes. Thus, FH patients were distinguished from normal subjects and non-FH hyperlipidemic patients.
4.Correlation of the expressions of scavenger receptor and CD14 in murine alveolar macrophages with lung injury
Ce YANG ; Jianxin JIANG ; Peifang ZHU
Chinese Journal of Tissue Engineering Research 2005;9(6):222-224
BACKGROUND: There exists a close relationship between the expression of scavenger receptor(SR) and CD14 and the endotoxic lung injury. To further detect the expression of these two receptors and their relationship is helpful to disclose the receptor mechanism of lung inflammatory disequilibrium so as to provide a possible theoretical foundation for sepsis therapy.OBJECTIVE: To investigate the expression of CD14 and SR in murine alveolar macrophages and their effect after trauma and traumatic endotoxin challenge.DESIGN: Randomized and controlled experimental study.SETTING: Fourth Laboratory(a state key laboratory), Trauma, Burns and Combined Injury, the Research Institute of Field Surgery, Daping Hospital,the Third Military Medical University of Chinese PLA.MATERIALS: The experiment was completed in the Research Institute of Field Surgery of Daping Hospital of the Third Military Medical University of Chinese PLA from August 2001 to November 2001. Totally 63 Kunming mice with murine alveolar macrophages were used in the experiment.METHODS: The experimental animals were randomly divided into three groups including control group, trauma group and traumatic endotoxin challenge group. The model mice with both femur fracture and endotoxin challenge were used. Endotoxin at a dose of 5 mg/kg was injected one hour after fracture via tail vein and the dynamic expression of CD14 and SR in murine alveolar macrophages (AM) was detected.RESULTS: Six hours after trauma, the expression of CD14 and that of SR in AM showed the tendency of up-regulation and down-regulation respectively. Furthermore, the post-traumatic endotoxin challenge induced CD14up-regulation and SR down-regulation drastically. Correlation analysis indicated that CD14 and SR showed a significantly negative relationship.CONCLUSION: The study suggested that the dual modulation of CD14 and SR in AM is possibly related with the change of "self-control" to "out of control" of inflammatory reactions in the lungs after endotoxic challenge. The dual regulation of the effective antagonists CD14 and SR are helpful in further understanding lung injury and its repairing mechanism.
5.Tanshinone IIA prevents high glucose-induced human umbilical vein en-dothelial cell apoptosis
Jianxin YU ; Qi WU ; Huan YANG
Chinese Journal of Pathophysiology 2015;(9):1720-1723
AIM:To investigate the effect of tanshinone IIA on the apoptosis of human umbilical vein endothe -lial cells (HUVECs) after high glucose treatment.METHODS:The cell viability was determined by MTT assay.The cell apoptotic rate was examined by flow cytometry with Annexin V-FITC/PI double staining .The expression of Bcl-2 and Bax, and the release of mitochondrial cytochrome C ( Cyt C) were analyzed by Western blotting .RESULTS: Tanshinone IIA significantly inhibited high glucose-induced decrease in cell viability and increased the cell apoptosis .Additionally, after tanshinone IIA treatment , Bax expression and the release of mitochondrial Cyt C were significantly inhibited , while Bcl-2 expression was increased .CONCLUSION: Tanshinone IIA prevents high glucose-induced endothelial cell apoptosis via mitochondria-dependent pathway .
6.Investigation and analysis on reference value range of peripheral blood routine in preschool children from Shanghai
Jianxin ZHENG ; Hui YANG ; Qihua FU
International Journal of Laboratory Medicine 2014;(16):2194-2196
Objective To investigate and understand the reference value range of hematological parameters for peripheral blood routine in preschool children from Shanghai.Methods The Sysmex XS-800i automated hematology analyzer and the original rea-gents were used to measure the hematological parameters in peripheral blood samples collected from 7 692 healthy preschool chil-dren aged 2-6 years in Shanghai,including white blood cells(WBC),red blood cells(RBC),platelet(PLT)count,hemoglobin(Hb), hematocrit(HCT),mean corpuscular volume(MCV),mean corpuscular hemoglobin(MCH)and mean corpuscular hemoglobin con-centration(MCHC);the various parameters in different age groups were collected and statistically processed to establish the refer-ence intervals for each parameter.Results In the blood routine among preschool children in Shanghai,there were statistically signif-icant differences in all parameters except WBC and PLT count between sexes among preschool children in Shanghai(P <0.05).The reference intervals of hematological parameters obtained in this investigation were obviously differed from those offered by the man-ufacturer.However,compared with those from the related reports,the difference existed in partial parameters,the upper limit of WBC count was highest compared with the results from some areas,while the reference value ranges of MCV,MCH and MCHC were higher than those of other area study results.Conclusion The independent blood routine medical reference value range for preschool children in Shanghai should be established and the influence of the factors of gender,instrument and reagents also should be taken into consideration in establishing the reference value range.
7.Dynamic Comprehensive Evaluation of Performance Indicators after Reorganization for 10 Years in Xinjiang
Xin LV ; Shumei YANG ; Jianxin GUO
Modern Hospital 2017;17(5):635-637
Objective To study the performance indicators after reorganization for 10 Years in enterprise hospital.Methods The performance indices from 2005 to 2014 of a Class One Grade A hospital was evaluated by rank sum ratio.Results The reform was in the doldrums in 2005, improved slightly in 2006 and 2007, increased significantly and steadily in 2008, reached the best in 2014.Conclusion Evaluating the performance of hospital management with rank sum ratio is scientific and clear, which has certain practical value.
8.Development and Application of Endoscopic Ultrasound Electrosurgical Cutting and Coagulation Device
Jianxin YAO ; Linhua LI ; Jianjun YANG
Chinese Medical Equipment Journal 1993;0(06):-
Objective To develop a cutting and coagulation device with searching for surgical operation method. Methods By using the relative theory of electric technology, choice some ceramics matter and form any vibration frequency and carry out cutting biology organization and stopping blood. Results The sample instrument was made successfully, and was used in the animal experiments and clinical experiments. Conclusion This instrument has much better applying prospect and greater market demand.
9.Flow injection immunoassay for insulin using a new synergistic enhanced chemiluminescence
Jianxin LUO ; Xiao ZHANG ; Xiucen YANG
Chinese Journal of Laboratory Medicine 2001;0(04):-
Objective To establish a new non radioimmunoassay for detecting insulin. Methods We put together the techniques of chemiluminescent analysis, flow injection analysis and immunoassay and established a method,flow injection chemiluminescent immunoassay, for insulin determination using sandwhich procedure with the horseradish peroxdase (HRP) as label of antibody and using the detection system of synergistic enhanced chemiluminescence of para phenylpenol and sodium tetraphenylborate with HRP catalysed oxidation of luminol. Results Satisfactory results were obtained in the dynamic range 0.15~60.00 ?U with a relative coefficient of 0 997 2 ( P
10.Comparative Studies on Kinetics of Mitochondrial LDH and Solubilized Mitochondrial LDH in Rat Liver
Jianxin SUN ; Zhi CHEN ; Yushan YANG
Academic Journal of Second Military Medical University 1981;0(04):-
In this paper, we studied the kinetics of nitochondrial lactate dehydrogenase (LDH) and solubilized mitochondrial LDH in the rat liver. The apparent Km values of mitochondrial LDH and solubilized mitochondrial LDH for substrate pyruvate were 50.0 ?mol/L and 33.8 ?mol/L, and those for NADH were 35.3?mol/L and 21.4 ?mol/L, respectively. The apparent Km values of mitochondrial LDH were greater than those of solubilized nitochondrial LDH. The mitochondrial LDH in the rat liver was mainly LDH-5, which could be solubilized by 0.15 mol/L NaQ solution.