1.Relationship between changes in plasma GMP-140 and lipid levels in patients with acute pancreatitis and their clinical significance
Wei LI ; Xiaoyu TAN ; Xianjing WU
Chinese Journal of General Surgery 2000;0(11):-
Objective To study the clinical significance of changes of plasma GMP-140 and lipid levels in patients with acute pancreatitis.Methods GMP-140 was determined by ELISA and plasm a lipid levels were determined with an auto-biochemical analyzer in 58 patients with acute pancreatitis and in 33 healthy(individuals) as control group.Results The levels of plasma GMP-140, total cholesterol(TC),low-density lipoprotein(LDL-C) in acute pancreatitis were higher than in the that control group(P
2.Empirical study of effect of Yiwei Ning on expression of Fas/FasL in rat with endometriosis
Wenguang MA ; Xiaoyu XU ; Wenhua TAN ; Fan QU ; Baozhang MA
China Journal of Traditional Chinese Medicine and Pharmacy 2005;0(12):-
Objective: To expound the effect of Yiwei Ning in treating endometriosis through measuring Fas/FasL protein expression.Method:The female Wistar rats were divided into five groups randomly.After 8 weeks of administration,expression of Fas/FasL protein were determined.Results: There were significant difference in the positive expression of Fas/FasL protein between Yiwei Ning group and the control group(P
3.Relationship between ACE gene (I/D) polymorphism and familial essential hypertension
Tan XUE ; Jing SHI ; Xiuyan WANG ; Juan LI ; Xiaoyu LIANG
Chinese Journal of cardiovascular Rehabilitation Medicine 2015;24(2):127-130
Objective:To explore the relationship between angiotensin converting enzyme (ACE) gene insertion/dele‐tion (I/D) polymorphism and familial essential hypertension (EH) .Methods :Fluorescent in situ hybridization stai‐ning DNA sequencing test was used to detect ACE gene I/D genotype frequency and allele frequency in 46 familial EH patients (familial EH group) ,64 EH patients without family history (non‐familial EH group) and 43 healthy people (healthy control group) .Results:In healthy control group ,non -familial EH group ,familial EH group ACE gene DD genotype frequency was 11.6% ,32.3% and 37.0% ;distribution frequency of D allele was 33.7% , 52.3% and 57.6% respectively .Compared with healthy control group ,there were significant rise in ACE gene DD genotype and D allele frequency in familial EH group and non -familial EH group (P<0.05 or <0.01) ,but there were no significant difference between familial EH group and non‐familial EH group (P>0.05) .Conclusion:ACE gene DD genotype and D allele may be genetic predisposing genes of patients with essential hypertension ,and there is no significant difference in genetic constituent ratio between familial EH patients and non‐familial EH patients .
4.Effects of the expression of adhesion molecules on the metastasis of cirrhotic liver cancer in mice
Wenli XU ; Xiaoyu TAN ; Aiqun ZHANG ; Chonghui LI ; Jiahong DONG
Chinese Journal of Hepatobiliary Surgery 2013;(6):441-446
Objective To study the effects of a cirrhotic environment on the metastasis of liver cancer in mice.Methods Male BALB/c mice were randomly assigned to two groups:cirrhosis group and control group.The cirrhosis group was treated by an injection of carbon tetrachloride intraperitoneally.H22 liver cancer cells were directly implanted under the capsule of each group after cirrhosis was established.The animals were sacrificed at 1,2,and 3 weeks after the operation.The metastatic behavior of the cancer cells was observed by the naked eye and microscopically.Additionally,the adhesion ability of the liver was assessed by measuring the expression of vascular cell adhesion molecule 1 (VCAM-1),E-selectin,and E-cadherin.Results After the operation,the cirrhosis group showed an obvious metastatic tendency in both intrahepatic (14/19) and extrahepatic ways (4/19),compared with the control group's intrahepatic (5/17) and extrahepatic ways (1/17) (P<0.05).Immunohistochemisty for VCAM-1 and E-selectin showed a significant increase in the cirrhosis (P<0.05).However,there was no difference observed in the E-cadherin between the cirrhosis and control group.Conclusion A cirrhotic liver environment may promote the metastasis of liver cancer cells by increasing the ability of liver adhesion.
5.Prevention of acute renal failure in obstructive jaundice patients in perioperative period
Dong DAI ; Xiaoyu TAN ; Xiancheng ZENG ; Songtao DU
Chinese Journal of General Surgery 2001;0(08):-
ObjectiveTo investigate the protection of renal function and the prevention of acute renal failue(ARF) in perioperative period in obstructive jaundice(OJ) patients. Methods In experimantal group, short time parenteral nutrition(PN) was given preoperatirely.Small dosage of dopamine was intravenously dripped.and rapid infusion of 20% mannitol periodically was done.In control group routine treatment was done. Postoperative blood BUN and Cr dynamic changes were examined and occurrence rate of ARF were recorded. Results No ARF occurred in the experimental group;but ARF occurred in 5 cases(29.4%)and 2 cases(17.6%) died (P
6.Quantitative detection on different HBsAg levels by chemiluminescence immunoassay and time-resolved immunofluorescence assay
Xiaoyu FU ; Feiyuan WU ; Gang CHEN ; Yanling XIE ; Guohua DENG ; Shaojun GAN ; Deming TAN
Chinese Journal of Infection Control 2017;16(3):258-262
Objective To evaluate the accuracy and feasibility of time-resolved immunofluorometric assay (TRI FA) for detection of HBsAg based on Abbott automated chemiluminescence immunoassay(CMIA),so as to carry out this project in primary hospitals,and provide reference for individual antiviral strategy and prediction of therapeutic effect.Methods Serum of 157 patients infected with hepatitis B virus were detected with CMIA and TRIFA,specimens with HBsAg titers exceeding the detection limit were firstly diluted,then performed quantitative analysis.HBsAg levels were divided into 4 groups:≤100 IU/mL,101-1 000 IU/mL,1 001-20 000 IU/mL,and > 20 000 IU/mL,quantitative correlation between two methods was analyzed.Results The linear regression equation of two methods was Y=2.323X-896.3,correlation coefficent r=0.943,P<0.001.CMIA was as a reference,4 groups were divided for analysis,results showed that when detected specimens was at low concentration of HBsAg,TRIFA value was low compared with CMIA method,while detected specimens was at high concentration of HB sAg,CMIA value was high,two reagents had good consistency in the detection of different concentrations of HBsAg(both P<0.05),when concentration was at 1 001-20 000 IU/mL,consistency was the best.Conclusion The accuracy of two reagents in the quantitative detection of HBsAg is similar,and the best correlation of detection value is 1 000-20 000 IU/mL.TRIFA assay has wide application for its low-cost and easy to be operated,which is especially suitable for primary hospitals.
7.Expression of telomerase inhibitor Pinx1 in leukemia cells and its correlation with telomerase activity
Jie SUN ; Yamin TAN ; He HUANG ; Yuanyuan ZHU ; Jianping LAN ; Xiaoyu LAI
Chinese Journal of Pathophysiology 1999;0(09):-
AIM: To study the expression of telomerase inhibitor Pinx1 in acute leukemia cells and during the differentiation of acute promyelocytic leukemia cells, and to realize its effect on telomerase activity. METHODS: Realtime quantitative PCR with fluorescence probe hybridization was used to measure the expression of Pinx1 and hTERT mRNA in acute leukemia cells and during differentiation of NB4 cells induced by ATRA. The correlations between Pinx1 and hTERT expression were also analyzed. RESULTS: Pinx1 mRNA expression in acute leukemia samples (0.00312, 5.42?10 -4-0.024) was significantly higher than that in normal bone marrow mononuclear cells (7.89?10 -4, 0-0.00863, P
8.Establishment and preliminary application of the McA-RH7777/Buffalo hepatoma rat model with bioluminescence imaging
Lichao PAN ; Aiqun ZHANG ; Jia BAI ; Xiaoyu TAN ; Xinlan GE ; Yanhua LAI ; Jiahong DONG
Chinese Journal of Hepatobiliary Surgery 2015;21(5):332-336
Objective To establish a luciferase labeled McA-RH7777 hepatoma rat model,which could be used for gross observation to further observe the effect of selective ligation of the portal vein and bile duct on tumor growth and metastasis.Methods The luciferase gene was transfected into rat McA-RH7777 hepatoma cells with pCDH-puromycin-CMV as the carrier,which were subcutaneously inoculated into Buffalo rats.Tumor pieces were then heterotransplanted into the left lateral lobe of the allogenic rat liver to observe the tumor growth in vivo.After the successful hepatoma modeling,the rats were randomly divided into three groups,namely the implanted portal vein group with combined portal vein and bile duct ligation,the implanted portal vein group with single portal vein ligation and sham operation group.The rats were executed at the 1 st week and 2nd week after ligation,and the livers were dissected to record the tumor growth and metastasis inside and outside the liver,respectively.Results The tumor formation rates of Buffalo rats after subcutaneous and intrahepatic implantation were both 100%.The fluorescence signal implanted into the liver lobe could be observed in vivo after the intrahepatic implantation of luciferase transfected Luc-McA-RH7777 at 2nd week,the range and intensity of which increased over time.Only local tumor growth could be found at the 4th week,without obvious intrahepatic and lung metastasis.However,both an increased in situ tumor volume and the pulmonary metastasis could be observed in the implanted portal vein group with combined portal vein and bile duct ligation at 2nd week after the ligation.Immunohistochemistry showed AFP positive immunoreactions in the vast majority of intrahepatic tumor cells and Luc positive immunoreactions in part of tumor cells.Conclusion Luc-McA-RH7777 cells could be used to establish the heptoma rat model and the in vivo analysis within the Buffalo rat liver demonstrated that the combined ligation of the portal vein and bile duct can accelerate the development and metastasis of liver cancer.
9.Inducing effect of IL-1βabout the release of HMGB1 in human bronchial epithelial cells
Xiaoyu TAN ; Changchun HOU ; Junjian CHEN ; Yu LI ; Tangjuan LIU ; Hongjiang ZHOU
Chongqing Medicine 2015;(2):151-154
Objective To investigate the effect of IL‐1βon the expression and release of high mobility group box 1 (HMGB1) from normal human bronchiolar epithelial cell (HBE) .Methods HBE135‐E6E7 was developed and methyltetrazolium (MTT) as‐say was used to assess the viability of HBE cell line under different concentration of IL‐1β.The mRNA expression of HMGB1 in HBE after stimulating with IL‐1βwere determined by Real‐time PCR;the level and location of HMGB1 in the cytoplasm ,nucleus and culture medium of HBE after stimulating with IL‐1β were detected by Western blot and ELISA assay .The expression and translocation of HMGB1 of HBE after stimulating with IL‐1β were detected by Immunofluorescence .Results 0 .1 ,1 .0 ,10 .0 ng/mL IL‐1βdid not influence the cell viability of HBE ;IL‐1β increased the mRNA expression of HMGB1 in HBE in does‐and time‐dependent manner and increased the protein expression of HMGB1 in HBE .In comparison with control group ,the levels of HMGB1 in the culture medium significantly increased after stimulation with IL‐1βat 1 .0 ,10 .0 ng/mL for 24 h(P<0 .05)in the dose dependent experiments;and in time dependent experiments ,10 .0 ng/mL IL‐1βsignificantly increased HMGB1 level in the cul‐ture medium after stimulation for both 12 h and 24 h (P< 0 .05) .After stimulation with IL‐1β (10 .0 ng/mL ) for 24 h ,the HMGB1 expression in cytoplasm significantly increased in plasmosin and decreased in nucleus .HMGB1 translocated from nuclei to cytoplasm after stimulation with IL‐1β(10 .0 ng/mL ) for 24 h .Conclusion IL‐1βcould induce HMGB1 expression and release in human bronchial epithelial cells ,which indicates that HMGB1 may involve in IL‐1β‐mediated chronic airway inflammation .
10.Histological changes and safety of long-term acral nerve root stimulation electrode placement in rabbits
Peng YAN ; Weidong ZHENG ; Jikai ZHANG ; Yunbing TAN ; Gaofeng LI ; Guangchun LI ; Cheng SONG ; Xiaoyu YANG
Chinese Journal of Tissue Engineering Research 2013;(37):6587-6593
BACKGROUND:Studies have shown that sacral nerve-root stimulation based on anodes block technique can effectively reconstruct the bladder voiding function of the rabbits with spinal cord injury. But the corresponding technology of stimulating electrode has not been reported so far.
OBJECTIVE:To design and develop the stimulating electrodes matching with both rabbit sacral nerve roots and anodal blocking technique, to observe the ultrastructure and morphological change of rabbit sacral nerve roots which implanted in electrode stimulation for a long-term and to assess the safety of stimulating electrodes.
METHODS:Thirty New Zealand rabbits were included, 10 rabbits were randomly selected from them and sacrificed after anesthesia, and then cut the anterior roots of bilateral S 2 and S 3 immediately;after measuring the diameter under the light microscope, the sleeve type stimulation electrode matched with the diameter was made. The remaining 20 rabbits were randomly divided into control group and implantation group, with 10 rabbits in each group. In the implantation group, the stimulating electrodes were implanted into the forepart of S 2 and S 3 nerve roots after anesthesia, and then sacrificed after fed for half a year for col ecting the samples. Then ultrastructure change of sacral nerve roots with the implantation was observed.
RESULTS AND CONCLUSION:Structure of nerve cel s of sacral nerve roots remained in good condition under a light microscope after long-term implantation of the stimulating electrodes. No obvious degeneration of axons, no inflammatory infiltration and glial scar formation were observed. In the implantation group, myelins arranged closely without demyelination phenomenon, and there was no atrophy of neuronal nuclear, no nuclear sag, no increased nuclear decompression and heterochromatin in neurons under the light microscope. Immunohistochemical analysis showed, compared with the control group, there were no significant differences in the expressions of glial fibril ary acidic protein, Bax, Bcl-2 and Caspase-3 proteins of nerve roots in the implantation group. The stimulation electrode of rabbit sacral nerve root is developed successful y, that is, the implantation is simple and safe as it can be used for long-term implantation without histopathological changes and apoptosis.