1.Analysis and prevention of complications in abdominal disease patients with liver cirrhosis
Gang LI ; Guang YANG ; Jun LIU
Chinese Journal of Current Advances in General Surgery 1999;0(04):-
Objective:To study the methods of prevention and occurrence of complications in abdominal operation patients with liver cirrhosis.Methods:Analys is the occurrence of postoperative complications and influencing factors in 41 cases in abdominal diseases patients with liver cirrhosis.Results:The incidence rate of postoperative complications was 63.4%(26/41),19 patients with 1 complication,7 patients with 2 or more than 2 complications.Five patients died,Mortality was 12.2%(5/41).Ascites,Child classification,portal hypertension,esophageal varices and intraopera-tive bleeding were influencing factors of occurrence of postoperative complications in abdominal disease patients with liver cirrhos is analyzed using Logistic regression analysis.Conclusion:Positive perioperative management,reducing the intraoperative and postoperative bleeding,Intra-abdominalinfection prevention and ascitic treatment are importent factors in reducing postoperative complications and mortality.
2.Analysis of misdiagnosis and treatment of acute superior mesenteric arterial embolism
Gang LI ; Guang YANG ; Gang CUI ; Guancheng YIN ; Jun LIU
Chinese Journal of General Surgery 1997;0(06):-
Objective To explore the early diagnosis and treatment of acute superior mesenteric arterial embolism (ASMAE).Methods The clinical data of 25 patients with acute superior mesenteric arterial embolism were retrospectively analyed.Results All 25(100%) patients had severe abdominal pain with abdominal signs,21(84%) patients had history of valvular heart disease or atrial fibrillation,and 17(68%) patients had hematochezia.All the cases were misdiagnosed preoperatively,including 11 patients were misdiagnosed as abdominal pain of unknown causes,3 patients as acute pancreatitis,3 patients as acute gastroenteritis,2 patients as necrotizing enteritis.1 patient as acute appenditis,1 patient as acute myocardial infarction,and 1 patient as acute cholecystitis;but 3 patients were preoperatively suspected to have impairment of mesenteric blood flow.All of the 25 patients underwent necrotic bowel resection,6 patients died,and 7 patients abandoned treatment because of serious complications such as short bowel syndrome etc.Mortality rate was 51%(13/25).Conclusions Early diagnosis of patients with acute superior mesenteric arterial embolism is difficult;the main cause of misdiagnosis is lack of recognition of its clinical signs.Fully grasping the characteristics of patients with early stage disease and effective early intervention are the fundamental measures for reducing mortality.
3.The effects and mechanism of IL-6 on the epithelial to mesenchymal transition of pancreatic cancer cells
Guang YANG ; Xuefei LI ; Gang CUI ; Zhengjun QIU ; Chen HUANG
Chinese Journal of Hepatobiliary Surgery 2013;19(7):539-543
Objective To investigate the effects and mechanism of IL-6 on the epithelial to mesenchymal transition of human pancreatic cancer cells.Methods IL-6 was added into the culture media of human pancreatic cancer cells Capan-2,SW1990,and STAT3-siRNA-SW1990.Cell growth was measured by MTT assays.STAT3,p-STAT3,Snail,Twist,and E-cadherin mRNA and protein expression were examined using real-time fluorescence quantitative polymerase chain reaction (RT-PCR)and Western blot,respectively.The invasion abilities of SW1990 and Capan-2 cells were determined by a cell invasion assay in vitro.Results Our results showed that 100 μg/L of IL-6 significantly promoted the growth and invasion abilities of Capan-2 and SW1990 cells (P<0.05).The use of IL-6 not only markedly increased the protein expression of P-STAT3 and Snail,but also greatly decreased the mRNA and protein expression of E-cadherin.The use of IL-6 can not change the mRNA and protein expression of Snail and E-cadherin.Conclusion Activation of the STAT3 signal transducer pathway with IL-6 can promote the epithelial to mesenchymal transition of pancreatic cancer cells in vitro through up-regulation of Snail and down-regulation of E-cadherin expression.Therefore the STAT3 signal transducer may provide a novel therapeutic target for the treatment of pancreatic cancer.
5.Case-control study on three antithrombotic agents for the prevention of venous thromboembolism after unilateral total knee arthroplasty.
Shao-gang MIAO ; Xi-guang ZHANG ; Jing-hua LU ; Yang YANG ; Ning LU
China Journal of Orthopaedics and Traumatology 2015;28(10):893-896
OBJECTIVETo evaluate the efficacy and safety of three antithrombotic agents on venous thromboembolism (VTE) after unilateral total knee arthroplasty.
METHODSFrom November 2011 to March 2014, 149 patients undergoing unilateral total knee arthroplasty for knee osteoarthritis were reviewed. Among them, there were 66 males and 83 females, ranging in age from 48 to 76 years old. All the cases were randomly divided into three groups including Aspirin group, low-molecular-weight heparin (LMWH) group, and rivaroxaban group, according to antithrombotic agents. Deep vein thrombosis (DVT), pulmonary embolism (PE) and bleeding complication (including wound ecchymosis, hematoma and other local complications, gastrointestinal, cardiovascular, urinary hemorrhage and other major bleeding events) of antithrombotic agents were observed and analyzed statistically at the 6 week, 8 week, and 12 week after operation.
RESULTSAmong patients who received Aspirin (48 cases), 4 patients had DVT, in 1 patient had PE, and 2 patients had bleeding complication. Among 54 patients in low-molecular-weight heparin group, 3 patients had DVT, 1 patient had PE, and 3 patients had bleeding complication. While among those patients received the rivaroxaban (47 cases), 3 patients had DVT, 0 patient had PE, and 11 patients had bleeding complication. There were no statistically differences among three groups on DVT, and PE (P>0.05). The incidence of bleeding complication in rivaroxaban group was higher than the other two antithrombotic agents, and the difference among the three groups was statistically significant (P<0.05).
CONCLUSIONAspirin, low-molecular-weight heparin, and rivaroxaban could effectively reduce the incidence of VTE after total knee arthroplasty, and their efficacy was similar. Rivaroxaban has a higher incidence of bleeding complication and further clinical trials are required to be conducted to assess the safety of rivaroxaban in clinical.
Aged ; Arthroplasty, Replacement, Knee ; adverse effects ; Aspirin ; therapeutic use ; Case-Control Studies ; Female ; Fibrinolytic Agents ; therapeutic use ; Heparin, Low-Molecular-Weight ; therapeutic use ; Humans ; Male ; Middle Aged ; Postoperative Complications ; prevention & control ; Rivaroxaban ; therapeutic use ; Venous Thromboembolism ; prevention & control
6.Effect of STAT3 gene silencing on epithelial-to-mesenchymal transition of human pancreatic cancer cells
Guang YANG ; Xuefei LI ; Hongji WEI ; Gang LI ; Zhengjun QIU ; Chen HUANG
Chinese Journal of Hepatobiliary Surgery 2014;20(5):370-374
Objective To investigate the effect and mechanism of RNAi-mediated STAT3 gene silencing on epithelial-to-mesenchymal transition (EMT) of human pancreatic cancer cells.Methods Lentivirus vector mediating RNA interference targeting STAT3 was constructed in SW1990 cell line.The invasion ability of SW1990 cells was determined by cell invasion assay in vitro.Cell proliferation and cell cycle of SW1990 cells were also detected.The expression of EMT related genes such as STAT3,P-STAT3,Twist,Snail and E-cadherin were analyzed by reverse transcription-PCR,real-time PCR,and Western blotting.Results Silencing of STAT3 with RNAi not only markedly reduced proliferation but also greatly decreased the invasion ability of SW1990 cells.The mRNA level and protein expression of Snail decreased significantly (P < 0.05),but those of E-cadherin increased significantly (P < 0.05),compared to parental cells.However,no difference was on the expression of Twist in SW1990 cell line.Conclusions STAT3 signaling pathway plays an important role in the process of EMT.Silencing of STAT3 with RNAi can significantly inhibit EMT by downregulating expression of Snail and E-cadherin in pancreatic cancer cells.
7.Effects of IL-6 on invasion of pancreatic cancer cells and its mechanism
Guang YANG ; Zhengjun QIU ; Jun LIU ; Weimin BI ; Gang CUI ; Chen HUANG
Chinese Journal of Hepatobiliary Surgery 2011;17(1):50-54
Objective To investigate the effects and mechanism of IL-6 on invasion and metastasis of human pancreatic cancer cells. Methods IL-6 was added into the culture media of human pancreatic cancer cells Capan-2 and SW1990. Cell growth was measured by MTT assay. Western blot and immunocytochemistry were performed to detect Phosphorylated STAT3 (P-STAT3) protein. VEGF and MMP-2 mRNA and protein expression were examined using fluorescence quantitative polymerase chain reaction (RT-PCR) and Western blot, respectively. The invasion ability of SW1990 and Capan2 cells was determined by cell invasion assay in vitro. Results 100 ng/mL IL-6 significantly promoted growth and invasion ability of Capan-2 and SW1990 cells (P<0.05). The use of IL-6 not only markedly increased the protein expression of P-STAT3, VEGF and MMP-2, but also greatly increased the mRNA expression of MMP-2 and VEGF. Conclusions STAT3 signal transducer pathway activation with IL-6 can promote the invasion ability of pancreatic cancer cells in vitro through up-regulation of MMP-2 and VEGF expression. STAT3 signal transducer may provide a novel therapeutic target for the treatment of pancreatic cancer.
8.Chemical constituents from Morus notabilis and their cytotoxic effect.
Pan ZHEN ; Gang NI ; Xiao-guang CHEN ; Ruo-yun CHEN ; Han-ze YANG ; De-quan YU
Acta Pharmaceutica Sinica 2015;50(5):579-582
Une new flavonoids named as notabilisin K (1), together with four known compounds, morusin (2), mulberrofuran A (3), neocyclomorusin (4) and mornigrol F (5) are separated from 95% ethanol extracts of the twigs of Morus notabilis. Compounds 2-5 are separated from this plant for the first time. Notabilisin I, notabilisin J exhibits certain effect against cells of HCT-116, HepG2 and A2780 with IC50 values ranging from 1.47 μmol x L(-1) to 5.46 μmol x L(-1). Morusin exhibits strong effect against five kinds of human cancer cells (BGC823, A2780, HCT-116, HepG2 and NCI-H1650) with IC50 values ranging from 0.74 μmol x L(-1) to 1.58 μmol x L(-1).
Antineoplastic Agents, Phytogenic
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chemistry
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Benzofurans
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chemistry
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Flavonoids
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chemistry
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Hep G2 Cells
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Humans
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Inhibitory Concentration 50
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Morus
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chemistry
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Plant Extracts
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chemistry
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Terpenes
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chemistry
9.Study on Population of Bacterial Physiological Groups in Tomato with Different Resistance to Ralstonia solanacearum
Hang FENG ; Lu-Qin DUAN ; Li-Ping YANG ; Gang-Quan ZHOU ; Qiong-Guang LIU ;
Microbiology 2008;0(08):-
The population of bacterial physiological groups in tomato with different resistant to Ralstonia solanacearum was studied. The results suggested that endophytic bacterial communities and population in tomato variety changed with different resistant cultivars, different stages of tomato and seasons. It was con-ducted that the amount of ammoniation bacteria was the highest among the seven physiological bacterial groups. There were more ammoniation bacteria in high resistant tomato cultivars than that in high suscepti-ble cultivars. It may indicate that ammoniation bacteria played a key role in the occurrence of tomato bacte-rial wilt. In addition, the total amount of physiological bacteria in resistant cultivars was more than that in susceptible cultivars in different stages of tomato, and the tendency of changing displayed fluctuation. The average level of quantities of the ammoniation bacteria, nitrifiers bacteria, erobic nitogenfixing bacteria and desulphate reducer bacteria in summer were higher than that in winter, while the population of the sulphate reduced bacteria in winter was higher than that in summer. Furthermore, the amount of anaerobic bacteria was the least among them.
10.Efficacy of combined pranoprofen eye drops and artificial tears on the treatment of mild to moderate dry eye syndrome after trabbeculectomy
Guang-Ming, ZHAO ; Ping, ZHAO ; Bao-Ling, NI ; Zhong-Gang, YI ; Cheng, YANG ; Jing-Jing, ZHENG
International Eye Science 2015;(2):370-372
AlM:To evaluate the efficacy of combined pranoprofen eye drops and artificial tears on the treatment of mild to moderate dry eye syndrome after trabbeculectomy.METHODS:This prospective case control study included 63 cases (63 eyes) of patients with mild to moderate dry eye syndrome after trabbeculectomy in our hospital from November 2013 to June 2013. All subjects were randomly divided into two groups. Observation group was treated with combined pranoprofen eye drops and artificial tears and control group received simple artificial tears marking the eyes at 1, 2, 4wk. The patient's symptoms, signs, BUT, S▏t, and FL were observed before treatment and 1, 2, 4wk after treatment.RESULTS: After 2wk, the symptoms of observation group were improved, there was statistically significant difference (P<0. 05). FL difference of each group was statistically significant ( P<0. 05 ); After 4wk, symptoms and signs were improved. There was statistically significant difference ( P < 0. 05 ). The BUT of the observation group and corneal FL scores of two groups showed significant differences (P<0. 05). CONCLUSlON: Artificial tears joint pranoprofen eye drops has good curative effect in the treatment of mild to moderate dry eye syndrome after trabbeculectomy.