The noninvasive measurement of liver stiffness (LS) was evaluated by transient elastogra-phy (FibroScan) and the possible influencing factors from the patients' clinical situations including age,gender,liver inflammation represented by alanine transaminase (ALT) and total billirubin (TBIL) level,HBV replication (HBV DNA loads),portal vein pressure (portal vessel diameter,PVD),splenic thick-ness (SPT) and body mass index (BMI) were analyzed in patients with chronic hepatitis B (CHB).A to-tal of 466 patients including 31 patients with acute-on-chronic liver failure (ACLF),and 435 patients with chronic hepatitis B (CHB) among which 82 patients were diagnosed with liver cirrhosis (LC) by clinical manifestations and liver B-type ultrasonic inspection were enrolled at Tongji Hospital from April to December 2009.LS was measured by a FibroScan device (EchoSens,France).Simultaneously,ALT and TBIL levels,HBV DNA loads,PVD,SPT and BMI in all patients were also tested.Forty-one healthy volunteers served as controls.The values of LS were correlated positively with ages of CHB patients and significantly higher in males than in females.In patients with BMI>28 kg/m2 (obesity) and abnormal levels of ALT and TBIL,LS values were significantly increased as compared with those hav-ing normal levels of ALT and TBIL.The patients with ACLF had the highest LS value.Furthermore,LS values in the patients with LC were significantly higher than those in patients without LC.It is concluded that noninvasive measurement of liver fibrosis by FibroScan provides an alternative method to evaluate liver fibrosis of patients with CHB.In order to properly illustrate the stiffness value taken by transient elastography,patients' gender should be taken into consideration and it is also suggested to avoid possible influencing factors including liver inflammation (high levels of ALT and TBIL) and obesity (high BMI).
AIM: To examine the role of Fibrinogen-like protein 2 (fgl2)/fibroleukin in tumor development. Fgl2 has been reported to play a vital role in the pathogenesis in MHV-3 (mouse hepatitis virus) induced fulminant and severe hepatitis,spontaneous abortion,allo-and xeno-graft rejection by mediating "immune coagulation". METHODS: Tumor tissues from 133 patients with six types of distinct cancers and the animal tumor tissues from human hepatocellular carcinoma (HCC) model on nude mice (established from high metastasis HCC cell line MHCC97LM6) were obtained. RESULTS: Hfgl2 was detected in tumor tissues from 127 out of 133 patients as well as tumor tissues collected from human HCC nude mice. Hfgl2 was highly expressed both in cancer cells and interstitial inflammatory cells including macrophages,NK cells,and CD8+ T lymphocytes and vascular endothelial cells. Hfgl2 mRNA was localized in cells that expressed hfgl2 protein. Fibrin (nogen) co-localization with hfgl2 expression was determined by dual immunohistochemical staining. In vitro,IL-2 and IFN-γ increased hfgl2 mRNA by 10-100 folds and protein expression in both THP-1 and HUVEC cell lines. One-stage clotting assays demonstrated that THP-1 and HUVEC cells expressing hfgl2 had increased procoagulant activity following cytokines stimulation. CONCLUSION: The hfg12 contributes to the hypercoagulability in cancer and may induce tumor angiogenesis and metastasis via cytokine induction.
Kai Su Fang Chen Wei-Ming Yan Qi-Li Zeng Li Xu Dong Xi Bin Pi Xiao-Ping Luo Qin Ning
Naturally occurring mutations in surface proteins of Hepatitis B virus(HBV) usually result in altered hepatitis B surface antigen(HBsAg) secretion efficiency.In the present study,we reported two conserved residues,M75 and M103 with respect to HBsAg,mutations of which not only attenuated HBsAg secretion(M75 only),but also suppressed HBV genome replication without compromising the overlapping p-gene product.We also found M75 and M103 can initiate truncated surface protein(TSPs) synthesis upon over-expression of full-length surface proteins,which may possibly contribute to HBV genome replication.However,attempts to rescue replicationdefective HBV mutant by co-expression of TSPs initiated from M75 or M103 were unsuccessful,which indicated surface proteins rather than the putative TSPs were involved in regulation of HBV genome replication.
Previous study on TNFR1-mediated hepatocyte apoptosis has been implicated in the development of fulminant viral hepatitis.To interfere with the potentially effective target,plasmid named p-mTNFR1shRNA complimentary to the sequence responsible for mTNFR1 was also constructed and further confirmed by sequence analysis.To investigate the effect of mTNFR1shRNA plasmid on mTNFR1 expression in vivo and the disease progress in MHV-3 induced fulminant hepatitis mice model.By hydrodynamic injection of mTNFR1shRNA plasmid,the survival rate of mice,hepatic pathological change were examined and compared between mice with/without mTNFR1shRNA plasmid intervention.The expression of mTNFR1 was detected by Real-time PCR, immunohistochemistry staining.The mTNFR1shRNA plasmid significantly reduced mTNFR1 expression in vivo, markedly ameliorates inflammatory infiltration,prolonged the survival time period and elevated the survival rate from 0 up to 13.3%in Balb/cJ mice with MHV-3 induced fulminant hepatitis.This study was designed to explore the opportunity of RNA interference technique in inhibiting TNFR1 expression,which has been reported to be involved in the development of a variety of diseases including fulminant viral hepatitis and severe chronic hepatitis B.
Sui GAO Ming WANG Jian-wen GUO Dong Xi Xiao-ping LUO Qin NING
