Da-Jiang Li

Third Military Medical University, Ch’ung-ch’ing-shih, Chongqing Shi, China

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Publications (6)10.01 Total impact

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    ABSTRACT: To explore the application of joint detection of serum AFP, CA19-9, CA125 and CEA in identification and diagnosis of cholangiocarcinoma (CC). The levels of serum AFP, CA19-9, CA125 and CEA of both 30 patients with CC and 30 patients with hepatocellular carcinoma (HCC) were assessed. Receiver operating characteristic (ROC) curves were used to evaluate the diagnostic effects of single and joint detection of those 4 kinds of tumor markers for CC. The levels of serum CA19-9, CA125 and CEA in CC patients were higher than that in HCC patients,whereas that of serum AFP was significantly lower s. The area under ROC curve of single detection of serum AFP, CA19-9, CA125 and CEA were 0.05, 0.86, 0.84 and 0.83, with the optimal cutoff values of 15.4 ng/ml, 125.1 U/ml, 95.7 U/ml and 25.9 ng/ml, correspondingly, and the percentage correct single diagnosis was <79%. With joint detection, the diagnostic effect of combined AFP, CA19-9, CA125 and CEA was the highest, with an area under the ROC curve of 0.94 (95%CI 0.88~0.99). Single detection of serum CA19-9, CA125 and EA is not meaningful. The sensitivity, specificity, the rate of correct diagnosis and the area under ROC curve of joint detection of AFP, CA19-9, CA125 and CEA are highest, indicating that the joint detection of these 4 tumor markers is of great importance in the diagnosis of CC.
    No preview · Article · Apr 2015 · Asian Pacific journal of cancer prevention: APJCP
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    ABSTRACT: To explore the expression of lamininγ2 in extrahepatic cholangiocarcinoma (EHCC) tissues and its influence on tumor invasion and metastasis. Paraffin embedding samples of cancer, para-cancer, lymph node metastatic and hepatic metastatic tissues from 79 patients undergoing EHCC resection were collected. Expression of lamininγ2 was detected by immunohistochemistry and its relationship with clinical pathological characteristics and the prognosis of EHCC patients were analyzed. Lamininγ2 showed negative staining in para-cancer tissues, but demonstrated a 51.9% (41/79) positive expression rate in extracellular matrix (ECM) or cytoplasm of EHCC tissues. In lymph node metastatic and distant metastatic nidi, expression of lamininγ2 was significantly higher than in the primary nidi (χ2=7.4173, P=0.0065; χ2=4.0077, P=0.0453). The expression was in obvious association with lymph node metastasis (P<0.01), but had no relevance with age, gender, tumor location, tumor stage, differentiation and distant metastasis in ECM (P>0.05), whereas it was in marked connection with lymph node and distant metastasis (P<0.05 or P<0.01), but had no relationship with age, gender, tumor location, tumor stage and differentiation in cytoplasm (P>0.05). However, the median survival time and median recurrent period of patients with positive expression of lamininγ2 in both cytoplasm and ECM of tumor cells, only in ECM and only in cytoplasm, were evidently lower than with negative expression of lamininγ2 in RCM and cytoplasm (P<0.05 or P<0.01). Further Cox regression analysis showed that the positive expression of lamininγ2 and the tumor differentiation were independent risk factors influencing the prognosis of EHCC patients. Abnormal expression of lamininγ2 may be closely associated with invasion and metastasis of tumor cells, and thus a potential molecular marker for prognosis of EHCC patients.
    No preview · Article · Mar 2015 · Asian Pacific journal of cancer prevention: APJCP
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    ABSTRACT: It is acknowledged that total cyst excision is a safe and ideal surgical treatment for congenital biliary duct cyst, compared to simple internal drainage. The aim of this study was to determine the optimal operation occasion and the effect of laparoscopy on congenital biliary duct cyst based upon total cyst excision. From January 2002 to January 2011, 217 patients were admitted to Southwest Hospital for congenital biliary duct cyst. To determine the optimal surgery occasion, we divided these subjects into three groups, the infant group (age ≤ 3 years), the immaturity group (3 < age ≤ 18 years), and the maturity group (age > 18 years), and then evaluated the feasibility, risk and long-term outcome after surgery in the three groups. To analyze the effect of laparoscopic technique on congenital biliary duct cyst, we divided the patients into the laparoscopy and the open surgery groups. Among the three groups, the morbidity from cholangiolithiasis before surgical treatment had obvious discrepancy (p < 0.05) (lowest in the infant group), and intraoperative blood loss also had apparent diversity (p < 0.05). Furthermore, long-term outcomes (secondary cholangiolithiasis, stoma stenosis and cholangiocarcinoma) showed no significant difference between different groups (p > 0.05).Similarly, no significant discrepancy was observed in the morbidity from postoperative complications or long-term postoperative complications (p > 0.05) between the laparoscopic and the open surgery groups. We conclude that total cyst excision should be performed as early as possible. The optimal treatment occasion is the infant period, and laparoscopic resection may be a new safe and feasible minimally invasive surgery for this disease.
    Preview · Article · Mar 2012 · BMC Gastroenterology
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    ABSTRACT: Cancer cells are thought to possess immune evasion properties due to FasL overexpression in many types of human tumors. In the present study, we set out to investigate the role of MAPK-ERK pathway in 67-kDa laminin receptor induced FasL expression and FasL-mediated apoptosis in human cholangiocarcinoma cells. The expression of FasL and its promoter activity in cultured cholangiocarcinoma cells were examined after treatment with laminin or transfection with plasmids containing siRNA targeted to 67-kDa laminin receptor. The effects of MAPK-ERK cascade inhibitor and c-Myc inhibition by siRNA on 67-kDa laminin receptor-induced FasL expression were determined. Apoptosis assay was performed to analyze the apoptosis of lymphocytes cocultured with cholangiocarcinoma cells treated with or without MAPK-ERK cascade inhibitor. Our results revealed that the specific MAPK-ERK cascade inhibitor, PD98059, significantly attenuated phosphorylation of c-Myc on Ser-62 and FasL upregulation in QBC-939 cells and these cells showed decreased cytotoxicity against Fas-sensitive Jurkat T cells. A luciferase reporter assay revealed that FasL promoter activity was significantly reduced in cells treated with PD98059 or transfected with c-Myc siRNA. Based on these results, we conclude that 67LR induces FasL expression and cytotoxicity against Fas-sensitive Jurkat T cells in human cholangiocarcinoma cells through the phosphorylation of c-Myc on Ser-62 and the subsequent activation of the FasL promoter through the ERK pathway.
    No preview · Article · Oct 2010 · Digestive Diseases and Sciences
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    ABSTRACT: To explore the role of hepatitis C virus core protein on the infiltration and metastasis of cholangiocarcinoma tissues. From January 2001 to November 2006, 34 patients with cholangiocarcinoma who had intact follow-up data randomly were chosen. The expression of HCVc protein, epithelium markers and mesenchymal markers in cholangiocarcinoma tissues were examined by SP methods of immunohistochemistry, clinical-pathological data were recorded and analyzed. The positive expression rate was observed in 47.1% for HCVc protein, 50% for N-cadherin, 44.1% for Vimentin, 55.9% for Fibronectin and the decreased expression rate was E-cadherin for 55.9%, alpha-catenin for 70.6%, beta-catenin for 55.9%. The positive expression of HCVc protein was associated with the decreased expression of E-cadherin, alpha-catenin and the positive expression of N-cadherin, Vimentin, Fibronectin (chi(2) = 4.480, 4.163, 4.250, 7.438, 12.260, P < 0.05). A positive-correlation between the expression of HCVc protein and metastasis of lymph nodes and other organs were found (chi(2) = 5.708, 4.163, P < 0.05). HCVc protein might promote cholangiocarcinoma tissues' infiltration and metastasis by inducing it's epithelial-mesenchymal transition.
    No preview · Article · Nov 2007 · Zhonghua wai ke za zhi [Chinese journal of surgery]
  • Shu-guang Wang · Chang-hong Chen · Da-jiang Li · Kun Li
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    ABSTRACT: To investigate the effect of antisense oligonucleotide (AS-OD) of laminin receptor (LNR) on urokinase-type plasminogen activator (u-PA) expression in human bile duct carcinoma cells. Bile duct carcinoma cells of QBC939 line were cultured. Compounds of lipofectAMINE and AS-OD phosphorothioate of LNR of the concentrations of 3, 6, and 12 micromol/L respectively were prepared and then transfected into the QBC939 cells. Sense oligodeoxynucleotide (S-OD) of LNR and blank vector were used as controls. After culture of 48 hours, flow cytometry was used to detect the protein expression of LNR and the u-PA mRNA expression was detected by reverse-transcriptase polymerase chain reaction (RT-PCR). Cell invasion was examined by culture plate with Transwell microporous film before and after transfection. Flow cytometry showed down-regulation of LNR protein expression in the cells transfected with AS-OD dose-dependently. The LNR protein expression of the cells transfected with AS-OD of the concentration of 6 micromol/L was down-regulated by over 25% in comparison with those of the blank vector group and S-OD group (both P < 0.05). RT-PCR showed that the u-PA mRNA expression of the AS-OD 6 micromol/L group was down-regulated by 30% in comparison with the 2 control groups. The number of migrating cells in the AS-OD group was 78 +/- 6, significantly lower than those in the S-OD group (105 +/- 11), and blank vector group (101 +/- 7), both P < 0.05. The expression of laminin receptor in the bile duct carcinoma cells is related with the expression of u-PA gene expression. Inhibition of LNR expression decreases the u-PA gene expression, suggesting that LNR plays an important role in the invasion and metastasis of bile duct carcinoma.
    No preview · Article · Oct 2004 · Zhonghua yi xue za zhi