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Objective:To investigate the influencing of high sodium donor liver transplan-tation from the death of a citizen′s organ donation (DCD) on the prognosis of recipients.Methods:The retrospective cohort study was constructed. The clinicopathological data of 125 pairs of donors and recipients who underwent DCD liver transplantation in Xijing Hospital of Air Force Military Medical University from January 2015 to June 2021 were collected. Of the 125 donors, there were 93 males and 32 females. Of the 125 recipients, there were 92 males and 33 females, aged 48(41,55)years. According to the last time of serum sodium level of donor liver in the 125 recipients, 9 donor livers with serum sodium level ≥170 mmol/L were divided into group 1 (extremely high sodium), 33 donor livers with serum sodium level ≥150 mmol/L and <170 mmol/L were divided into group 2 (moderate high sodium), and 83 donor livers with serum sodium level <150 mmol/L were divided into group 3 (normal sodium), respectively. Observation indicators: (1) postoperative recover situations; (2) follow-up and survival analysis. Measurement data with normal distribution were represented as Mean± SD. Repeated measures were analyzed by repeated measures ANOVA. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was analyzed using the Kruskal-Wallis test. Count data were described as absolute numbers, and Pearson chi-square test or Fisher exact probability were used for data test. The Kaplan-Meier method was used to draw survival curves and Log-rank test was used for survival analysis. Results:(1) Postoperative recover situations. The changes of alanine transaminase (AlT), aspartate aminotransferases (AST), total bilirubin (TBil), alkaline phosphatase (ALP), prothrombin time (PT), international normalized ratio (INR), albumin (Alb) and creatinine (Cr) from the first day to the 14th day after operation were (736±972)IU/L to (75±46)IU/L, (1 290±1 651)IU/L to (38±20)IU/L, (102±98)μmol/L to (33±11)μmol/L, (66±34)IU/L to (104±54)IU/L, (19.9±3.3)seconds to (11.3±1.0)seconds, 1.76±0.31 to 1.00±0.08, (34±5)g/L to (38±3)g/L and (91±41)μmol/L to (76±19)μmol/L, respectively, in the recipients of group 1. The above indicators were (505±377)IU/L to (48±46)IU/L, (855±727)IU/L to (24±17)IU/L, (64±42)μmol/L to (32±22)μmol/L, (68±51)IU/L to (91±46)IU/L, (16.8±3.5)seconds to (11.9±1.2)seconds, 1.47±0.30 to 1.04±0.09, (33±4 g/L) to (40±5)g/L and (106±32)μmol/L to (97±27)μmol/L in the recipients of group 2 and (637±525)IU/L to (65±60)IU/L, (929±1 193)IU/L to (33±27)IU/L, (66±48)μmol/L to (33±36)μmol/L, (64±28)IU/L to (125±64)IU/L, (17.2±4.7)seconds to (13.3±12.8)seconds, 1.51±0.42 to 1.05±0.13, (35±6)g/L to (39±4)g/L, (105±44)μmol/L to (94±40)μmol/L in the recipients of groups. Results of overall effect showed there were significant differ-ences in the change trend of TBil (time effect, inter-group effect, interaction effect) in recipients among the three groups after liver transplantation ( Fgroup=5.42, Ftime=22.78, Finteraction=3.85, P<0.05). There were significant differences in the time effect of ALT, AST, ALP, PT, INR, Alb, Cr in recipients among the three groups after liver transplantation ( Ftime=50.17, 36.24, 19.24, 10.55, 59.61, 41.94, 10.82, P<0.05). (2) Follow-up and survival analysis. All recipients were followed up. Cases with early postoperative liver dysfunction, cases with donor liver failure 1 year after operation, cases with biliary complica-tions 1 year after operation, cases with vascular complications 1 year after operation, cases with rejection 1 year after operation were 2, 1, 0, 0, 0 in the recipients of group 1. The above indicators were 2, 1, 3, 0, 1 in the recipients of group 2 and 10, 8,20, 1, 6 in the recipients of group 3. There was no significant difference in the above indicators among the three groups ( χ2=1.58, 0.60, 5.19, 1.62, 0.97, P>0.05). The 1-year and 3-year cumulative survival rates of the donor liver were 100.00% and 100.00% in the recipients of group 1 after liver transplantation. The above indicators were 94.74% and 77.16% in the recipients of group 2 and 91.57% and 89.30% in the recipients of group 3. There was no significant difference in the cumulative survival rate of donor liver among the three groups ( χ2=2.69, P>0.05). The 1-year and 3-year cumulative survival rates were 100.00% and 100.00% in the recipients of group 1 after liver transplantation. The above indicators were 93.74% and 77.16% in the recipients of group 2 and 89.40% and 86.00% in the recipients of group 3. There was no significant difference in the cumulative survival rate among the three groups ( χ2=1.94, P>0.05). Conclusion:Donor livers with high serum sodium level can be used in the DCD liver transplantation.
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The shortage of donors restricts the development of organ transplantation. Xenotransplantation might act as an effective approach to resolve this problem. With the advancement of genome editing technologies as well as research and development of novel immunosuppressant, lots of breakthroughs have been achieved in the field of xenotransplantation. Nevertheless, a majority of researches are still in the preclinical stage. Recently, the success of the world's first genetically engineered pig-to-human heart transplantation has greatly inspired researchers. However, clinical xenotransplantation still faces an array of problems, including counteracting rejection, controlling inflammation, regulating coagulation disorder, improving physiological compatibility of xenografts, paying attention to the risk of interspecific infection, optimizing immunosuppressive regimen, screening donor genome editing types, selecting suitable recipients, modifying xenotransplantation guidelines, and awareness of public recognition, etc. In this article, these 10 problems were summarized, aiming to provide reference for promoting the clinical application of xenotransplantation.
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Objective To establish Cdh5-Cre ERT /Acta2-tdTomato-STOP floxed -eGFP knockin genetic tracing mice, and to investigate its application in studies on vascular endothelial cell transition in liver fibrosis. Methods Cdh5-Cre ERT mice were mated with Acta2-KI mice, and the Cdh5-Cre ERT /Acta2-KI genetic tracing mice were obtained and identified by PCR genotyping. Primary liver sinusoid endothelial cells (LSECs) were isolated and cultured, and a model of CCl 4 -induced liver fibrosis was established. LSECs and liver tissue were collected for immunofluorescent staining to observe the expression of the fluorescent proteins tdTomato and eGFP. Results After being induced by tamoxifen, LSECs and liver tissue of Cdh5-Cre ERT /Acta2-KI genetic tracing mice expressed eGFP under the conditions for epithelial-mesenchymal transdifferentiation established in vivo and in vitro, while the control group without induction expressed tdTomato alone. Conclusion The successfully established Cdh5-Cre ERT /Acta2-KI genetic tracing mice can realize the effective labeling of epithelial-mesenchymal transdifferentiation, which provides a genetic tracing basis for the diverse sources of mesenchymal myofibroblasts in liver fibrosis.
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Objective To investigate the application prospect of the most extensive genome engineering pig internationally in preclinical xenotransplantation. Methods Porcine endogenous retrovirus (PERV) knockout combined with 3 major heterologous antigen gene knockouts and 9 humanized genes for inhibition of complement activation, regulation of coagulation disorders, anti-inflammatory and anti-phagocytosis were transferred into a pig (PERV-KO/3-KO/9-TG) as a donor, and the heart, liver and kidney were obtained and transplanted to 3 Rhesus macaque recipients respectively to establish a preclinical research model of pig-to-Rhesus macaque xenotransplantation. The functional status of xenografts after blood flow reconstruction was observed and the survival of recipients was summarized. The hemodynamics of xenografts were monitored. The change of hematological indexes of each recipient was compared. The histopathological manifestation of xenografts was observed. Results After the blood flow was reconstructed, all xenografts showed ruddy color, soft texture and good perfusion. The transplant heart, liver and kidney showed full arterial and venous blood flow and good perfusion at 1 d after operation. The postoperative survival time of heart, liver, and kidney transplant recipients was 7, 26, and 1 d, respectively. The levels of creatine kinase, creatine kinase isoenzyme, and lactate dehydrogenase increased in heart transplant recipient at 1 d after operation, and gradually recovered to near normal levels at 6 d after operation. All indexes increased sharply at 7 d after operation. The level of aspartate aminotransferase increased in liver transplant recipients at 2 d after operation, and the alanine aminotransferase basically returned to normal at 10 d after operation, but the total bilirubin continued to increase. Both aspartate aminotransferase and alanine aminotransferase increased at 12 d after operation, and reached a peak at 15 d after operation. The kidney transplant recipient developed mild proteinuria at 1 d after operation, and died of sudden severe arrhythmia. Histopathology showed that the tissue structure of cardiac and renal xenografts was close to normal, and liver xenografts presented with patchy necrosis, the liver tissue structure was disordered, accompanied by inflammatory damage, interstitial hemorrhage and thrombotic microangiopathy. Conclusions PERV-KO/3-KO/9-TG pig shows advantages in overcoming hyperacute rejection, mitigating humoral rejection and coagulation dysregulation. However, whether it can be used as potential donor for clinical xenotransplantation needs further evaluation.
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Non-alcoholic fatty liver disease (NAFLD) is characterized by increased fat depositions in the liver while the patients do not have drinking history.NAFLD has a prevalence of 10％ ～40％ in global,25％ ～26％ in Western populations.From 2004 to 2013,the numbers of new patients on the waitlist who had NASH increased by 170％ in America.The prevalence of NAFLD in China is 20％.With the decrease of HBV and HCV and the increase of diabetes mellitus type 2 and obesity,NAFLD will become the most common chronic liver disease in China over the next 20 years.NAFLD related end-stage liver disease will become the most common indication of liver transplantation.In this paper,the epidemiological features,pathogenesis,indication and prognosis of liver transplantation are reviewed.
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Biliary surgery is the main branch of general surgery, which plays an important role in the field of surgery. The pathological and clinical manifestations of biliary diseases are very complex, so biliary surgery is still the most challenging surgery in the digestive system. With the development of minimally invasive technology and endoscopic technology, biliary surgery is undergoing a profound theoretical and technological innovation, and these studies will form an important foundation for the sustainable development of biliary surgery in the 21st century and should be paid more attention.
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Objective To investigate the protective roles of Epigallocatechin gallate (EGCG) on liver ischemia reperfusion injury (IRI) in rats.Methods 30 healthy male SD rats were selected and equally and randomly divided into 3 groups.Sham group,IRI group and IRI-EGCG group were established to construct 70％ liver IRI rat model.Drinking water with 0.4 mg/ml EGCG was administered for 2 weeks before the experiment in IRI-EGCG group.HE staining was performed to evaluate the injury.Transaminases in serum were investigated to assess liver injury.p-p85 and p-AKT was detected by Western-blot assay.qPCR was carried out to study the mRNA expression of TNF-α,IL-6 and IL-1β in liver tissue.The secretion of TNF-α,IL-6 and IL-1 β in serum was examined with ELISA assay.Results EGCG pretreatment reduced ASTand ALT in serum [AST:(550.0 ±66.5) IU/L vs.(220.0 ±63.5) IU/L;ALT:(376.0 ± 25.7) IU/L vs.(158.0 ± 33.1) IU/L,all P ＜ 0.05] and mitigated liver tissue damage.p-p85 and p-AKT increased due to liver IRI,and IRI-EGCG group showed higher expression of p85 and AKT.The proinflammatory cytokines of TNF-α,IL-6 and IL-1 β exhibited a relatively lower mRNA expression in IRI-EGCG group comparing with IRI group.IRI-EGCG group also revealed a decreased secretion of TNF-α,IL-6 and IL-1β in serum [TNF-α:(398.0±33.4) ng/Lvs.(211.0±23.6) ng/L;IL-6:(341.0±27.3) ng/L vs.(187.0±19.6) ng/L;IL-1β:(486.0±43.7) ng/L vs.(352.0±31.5) ng/L;allP＜0.05].Conclusion EGCG pretreatment can enhance IRI-induced activation of PI3K/AKT signaling and reduce the release of proinflammatory cytokines to exert liver protective effects.
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Objective To study the relationship between preoperative serum a-fetoprotein (AFP) level and early recurrence of patients with hepatocellular carcinoma (HCC) after partial hepatectomy.Methods 267 patients with hepatocellular carcinoma who underwent partial hepatectomy in Xijing Hospital,the Fourth Military Medical University from January 2011 to November 2015 were retrospectively studied.The patients were divided into the AFP-negative group (AFP ≤20 μg/L) and the AFP-positive group (AFP ＞ 20 μg/L) according to the preoperative serum AFP levels.The risk factors of early recurrence of HCC in patients after partial hepatectomy were studied by multivariate regression analysis.The recurrence-free survival rates during 24 months after surgery between the AFP-negative group and the AFP-positive group were compared.Results In 267 patients,97 patients had low or negative AFP levels (AFP≤20 μg/L) and 170 patients had high or positive AFP levels (AFP ＞ 20 μg/L).Patients in the AFP-positive group had significantly more well differentiated HCC on tumor histology when compared with patients in the AFP-negative group (x2 =17.050,P ＜ 0.05).The proportion of patients with liver cirrhosis in the AFP-positive group was significantly higher than that of the AFP-negative group (x2 =4.374,P ＜ 0.05).On the other hand,the numbers of patients with adjacent tissue invasion (x2 =4.374,P ＜ 0.05) and early HCC recurrence (x2 =7.595,P ＜ 0.05) in the AFP-positive group were significantly less than those of the AFP-negative group.Survival analysis showed that the recurrence-free survival rates in the AFP-positive and negative groups were 35.3％,52.6％,respectively.The results on univariate analysis showed that portal vein tumor thrombus,HBsAg positivity,tumor number,tumor diameter,tumor tissue differentiation,preoperative serum AFP level and adjacent tissue invasion were significantly associated with early recurrence of liver cancer (P ＜ 0.05).Cox multivariate regression analysis revealed that serum AFP positivity (HR =1.605,P ＜ 0.05),portal vein tumor thrombosis (HR =3.936,P ＜ 0.05),HBsAg positivity (HR =1.621,P ＜0.05),tumor diameter (HR =1.977,P ＜ 0.05) and tumor number (HR =1.991,P ＜ 0.05) were significantly correlated with early recurrence of liver cancer after partial hepatectomy.Conclusion The preoperative serum AFP level had an important predictive value for early recurrence of primary hepatocellular carcinoma in patients after partial hepatectomy.
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Gallbladder carcinoma is the most common malignancy in biliary tract.Early dissemination,rapid and silent progression and delayed diagnose could portend a dismal prognosis.The 5-year survival rate is less than 10％.Clarifying the etiological feature can improve the early diagnosis.Comprehending surgical indications of benign lesions can provide the methods for rational prophylactic resections.Standardized treatment of accident gallbladder carcinoma could improve the patients' prognosis.Efficient serologic markers could be used for early diagnosis and screening.
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To investigate the changes in the expression levels of scavenger receptor class B member 1 (SCARB 1) in the liver tissues before and after liver xenotransplantation and analyze the relationship between the variations in the SCARB1 expression and coagulation regulating dysfunction in the recipients.Methods The Wuzhishan miniature pig with α-1,3-galactosyltransferase gene-knockout(GTKO) was utilized as the donor and Macaca thibetana was chosen as the recipient.Heterotopic auxiliary liver xenotransplantation models were established.The liver tissue specimen was collected before and after liver xenotransplantation.Primary hepatocytes were extracted from the pig using collagenase digestion method.Human peripheral blood mononuclear cells were obtained by immunomagnetic bead sorting.These two types of cells were co-cultured and supplemented with human plasma to establish cell models with coagulation regulating dysfunction following liver xenotransplantation.Quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) and Western blot were performed to quantitatively measure and statistically compared the expression levels of messenger ribonucleic acid (mRNA) and protein of SCARB1 in the tissue and cell samples.At the cellular level,the expression of SCARB 1 was interfered by lentiviral vector.The coagulation time was detected to validate the effect upon coagulation function.Results The expression levels of SCARB1 mRNA and protein were significantly down-regulated after liver xenotransplantation (both P＜0.05).In the cell models,the expression levels of SCARB1 mRNA and protein in the porcine hepatocytes co-cultured with human monocytes were significantly down-regulated compared with those in porcine hepatocytes without intervention (both P＜0.05).Compared with the non-intervention group,the coagulation time was significantly prolonged after the expression of SCARB1 was interfered by lentiviral vector (P＜0.05).Conclusions The down-regulated expression of SCARB1 in the liver graft is one of the main causes of mediating coagulation regulating dysfunction.Intervention of SCARB1 expression contributes to resolve the coagulation regulating dysfunction in the recipients after liver xenotransplantation.
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Objective To observe the reception of using pig bone marrow stromal cells (BMSCs) that were transfected with human tissue factor pathway inhibitor (TFPI) to resolve the dysregulation of coagulation after liver xenotransplantation.Methods Pig BMSCs were immortalized by transfection with lentivirus containing SV40T and then transfection with human TFPI.At last the cells were tested for their ability to inhibit clotting in a model by co-incubation of human plasma,human monocytes and pig aortic endothelial cells.Results After transfection with SV40T,pig BMSCs were immortalized and similar to primary cells.The immortalized pig BMSCs showed a stable TFPI expression after transfection with human TFPI by lentivirus.Moreover,they showed the potential of regulating coagulation dysregulation in vitro.Conclusion Pig BMSCs transfected with human TFPI could solve the regulation dysregulation caused by TF activation effectively,and have the potential of resolving coagulation dysregulation in liver xenotransplantation.
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Objective To investigate the clinical effects of laparoscopic sleeve gastrectomy with duodenaljejunal bypass (LSG + DJB) for the treatment of type 2 diabetes mellitus.Methods The clinical data of 17 patients with type 2 diabetes mellitus who underwent LSG + DJB at the Xijing Hospital of the Fourth Military Medical University from March 2013 to February 2014 were retrospectively analyzed.The fasting blood glucose,postprandial 2-hour blood glucose,glycosylated hemoglobin (HbA1c) and body mass index (BMI) in 17 patients before operation were (9.2 ± 0.6) mmol/L,(14.4 ± 2.2) mmol/L,8.3％ ± 1.2％ and (29.4 ± 2.2) kg/m2,respectively.All the patients received LSG + DJB and were followed up by outpatient examination up to March 2015.The pre-and post-operative 12-month fasting blood glucose,postprandial 2-hour blood glucose,HbA1 c and BMI in 17 patients were compared.Measurement data with normal distribution were presented as-x ± s and analyzed by the t test.Results All the 17 patients received successful laparoscopic LSG + DJB without conversion to open surgery.The operation time,volume of intraoperative blood loss and recovery time of postoperative gastrointestinal function were (141 ±53)minutes,40 mL and 2.5 days.Of 3 patients with postoperative complications,1 patient with anastomotic leakage at postoperative day 5 received reoperation by laparoscopic Roux-en-Y gastric bypass,1 patient with digestive tract obstruction at postoperative day 10 released obstruction by reoperation and 1 patient with left subphrenic abscess and leakage at the upper of the stomach at postoperative week 2 was cured by the symptomatic treatment.The duration of hospital stay was 5.2 days.All the patients were followed up for a median time of 16 months (range,13-24 months).The postoperative 12-month fasting blood glucose,postprandial 2-hour blood glucose,HbA1c and BMI in 17 patients were (5.5 ± 0.7)mmol/L,(8.8 ± 1.7)mmol/L,5.1％ ± 0.7％ and (24.7 ± 2.3)kg/m2,which were significantly different from preoperative indicators (t =19.96,10.52,12.06,31.99,P ＜ 0.05).During the follow-up,no anastomotic ulcer and stenosis,dumping syndrome and severe malnutrition were occurred.Conclusion LSG + DJB is safe and feasible for the treatment of type 2 diabetes mellitus,with a good short-term hypoglycemic effect.
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Objective To investigate the effect of miR-10b on migration and invasion of human hepatocellular carcinoma (HCC) cell lines.Methods Transwell assay was used to evaluate the motility and invasiveness in different HCC cell lines,qRT-PCR was then used to detect the expression levels of miR-10b in different HCC cell lines.Artificial mimics of miR-10b were transiently transfected into HepG2 cells,which have low expression of miR-10b,and then the changes in migration and invasion were evaluated by Transwell assay.Antagomirs of miR-10b (miR-10b-AS) were transiently transfected into MHCC97H cells,which have high expression of miR-10b,and then the changes in migration and invasion were evaluated as well.Cell morphology changes were detected by immunofluorescence and electron microscopy,Results There was a significant correlation of miR-10b expression level with cell motility and invasiveness.Low-level expression of miR-10b was observed in HepG2 cells,which exhibited weak motility and invasiveness; whereas high-level expression of miR-10b was observed in MHCC97H cells,which exhibited strong motility and invasiveness.Up-regulation of miR-10b expression in HepG2 cells increased cell motility and invasiveness,whereas inhibition of miR-10b reduced cell motility and invasiveness in MHCC97H cells.Immunofluorescence and electron microscopy results showed that up-regulation of miR-10b in HepG2 cells significantly increased proliferation of filopodia and lamellipodia,whereas inhibition of miR-10b decreased filopodia and lamellipodia amount in MHCC97H cells.Conclusion miR-10b is involved in the invasion and metastasis of HCC cell through regulation of cytoskeleton in vitro and inhibition of miR-10b is likely to be a new molecular target to block metastasis.
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Objective To detect the expression of Id1 and HBx in HBV-related hepatocellular carcinoma (HCC) tissue samples and analyzed the correlation between Id1 expression levels and clinicopathological features of patients.Methods Tumor tissue samples obtained from a total of 113 HCC patients.The expression of Id1 proteins of these samples were detected by immunohistochemical (IHC) staining and evaluated by two independent pathologists.The corrections between the clinical pathological parameters and the IHC scores for Id1and the prognostic significance were statistical analyzed by SPSS 19.0 software.Results Ninty-six of 113 patients is HBV-related HCC.Over-expression of Id1 were found positively correlated with the HBsAg ＞ 200 s/n,histological grade,portal vein invasion.Patients with Id1 overexpression had both shorter disease-free and overall survival times.Conclusions High expression of Id1 was correlated with serum HBsAg,histological grade,portal vein invasion and poor clinical outcomes in HBV-related HCC.
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Objective To investigate the mechanisms of erythropoietin-producing hepatocellular A3 (EphA3) in the invasion of hepatocellular carcinoma (HCC) cells.Methods Hepatic cell HL-7702 and HCC cell and HCC cell lines HepG2 and MHCC97H were cultured.The expression of EphA3 in the HepG2 and MHCC97H cells was suppressed by siRNA interference,and then were divided into the untreated group,the control group and the siRNA intervention group.The expression of EphA3 was detected by RT-PCR and Western blot.The invasion ability of HepG2 and MHCC97H was detected by Transwell chamber.The protein expression of VEGF and activity of vascular endothelial growth factor (VEGF) were detected by western blot and ELISA.All data were analyzed using the analysis of variance or LSD-t test.Results The relative mRNA expressions of EphA3 in HL-7702,HepG2,and MHCC97H cells were 0.94 ±0.13,1.76 ±0.16 and 3.62 ±0.14,respectively,and the protein expressions of EphA3 in the 3 cells were 0.96 ±0.12,1.59 ±0.11 and 3.82 ±0.11.There was significant difference in the EphA3 expression between HL-7702 cells and HepG2,MHCC97H cells (t =2.511,6.437 ; 2.321,6.895,P ＜ 0.05).The relative mRNA expressions of EphA3 in the HepG2 cells in the untreated group,the control group and the siRNA intervention group were 0.95 ±0.11,0.96 ±0.12 and 0.31 ±0.15,respectively.There was significant difference in the mRNA expression of EphA3 in the HepG2 cells between the siRNA intervention group and the control group (t =4.051,P ＜ 0.05).The relative mRNA expressions of EphA3 in the MHCC97H cells in the untreated group,the control group and the siRNA intervention group were 0.97 ± 0.16,0.95 ± 0.14 and 0.40 ± 0.11,respectively.There was significant difference in the mRNA expression of EphA3 in the MHCC97H cells between the siRNA interference group and the control group (t =5.237,P ＜0.05).The relative protein expressions of EphA3 in the HepG2 cells in the untreated group,the control group and the siRNA intervention group were 0.97 ± 0.16,0.95 ± 0.15 and 0.32 ± 0.17,respectively.There was significant difference in the protein expression of EphA3 in the HepG2 cells between the siRNA interference group and the control group (t =4.145,P ＜ 0.05).The relative protein expressions of EphA3 in the MHCC97H cells in the untreated group,the control group and the siRNA intervention group were 0.95 ± 0.11,0.96 ± 0.12 and 0.38 ±0.17,respectively.There was significant difference in the protein expressions of EphA3 in the MHCC97H cells between the siRNA interference group and the control group (t =4.327,P ＜ 0.05).The numbers of HepG2 cells penetrated the Watrigel in the untreated group,the control group and the siRNA intervention group were (111 ±4)/10HPF,(109 ±5)/10HPF and (51 ±3)/10HPF,respectively.There was significant difference in the number of HepG2 cells between the siRNA interference group and the control group (t =7.582,P ＜ 0.05).The numbers of MHCC97H cells penetrated the Watrigel in the untreated group,the control group and the siRNA intervention group were (402 ± 6)/10HPF,(397 ± 7)/10HPF and (152 ± 7)/10HPF,respectively.There was significant difference in the number of MHCC97H cells between the siRNA interference group and the control group (t =9.479,P ＜ 0.05).The relative protein expressions of VEGF in the HepG2 cells in the untreated group,the control group and the siRNA intervention group were 0.98 ± 0.11,0.96 ± 0.13 and 0.57 ± 0.11,respectively.There was significant difference in the protein expression of VEGF of the HepG2 cells between the siRNA interference group and the control group (t =3.167,P ＜ 0.05).The relative protein expression of VEGF in the MHCC97H cells in the untreated group,the control group and the siRNA intervention group were 0.97 ±0.14,0.98 ±0.12 and 0.34 ± 0.15,respectively.There was significant difference in the protein expression of VEGF of the MHCC97H cells between the siRNA interference group and the control group (t =4.278,P ＜ 0.05).The relative activities of VEGF proteins of HepG2 cells in the untreated group,the control group and the siRNA intervention group were 0.96 ±0.15,0.94 ±0.11 and 0.47 ±0.13,respectively.There was significant difference in the activity of VEGF protein in the HepG2 cells between the siRNA interference group and the control group (t =3.981,P ＜ 0.05).The relative activities of VEGF proteins in MHCC97H cells in the untreated group,the control group and the siRNA intervention group were 0.98 ±0.12,0.97 ±0.12 and 0.38 ±0.14,respectively.There was significant difference in the activity of VEGF protein in the MHCC97H cells between the siRNA interference group and the control group (t =4.059,P ＜ 0.05).Conclusions EphA3 plays an important role in the invasion of HCC cells via regulating the protein expression and activity of VEGF.EphA3 might be a new target for the treatment of HCC.
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With the continuous development of the cancer stem cell theory,biomarkers for CSCs (Cancer stem cells) have gradually become the hot issues in tumor research.As the most commonly used CSCs biomarker,CD44 gains lots of attentions.This paper will review recent research about CD44 molecule and its powerful role in regulating tumor progenesis and progression.
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Compelling evidences have shown that various types of cancer,including hepatocellular carcinoma,are originated from stem cells.The occurrenee,chemoresistance,metastasis and recurrence of hepatocellular carcinoma are associated with a small population of cells called cancer ster cells.Although the origin of hepatocellular carcinoma and hepatic cancer stem cells remain controversial after a decade of intensive investigation,increasing scholars tend to believe that hepatocellular carcinoma and hepatic cancer stem cells can derive from malignant transformation of hepatic stem cells being exposed to various kinds of carcinogens.In this review,we mainly focus on the recent progress on malignant transformation of hepatic stem cells.
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Clinical manifestation of hemangioma of liver is unspecific,and its diagnosis mainly depends on imageology.Surgery is the most common and important treatment for hemangioma of liver.There is much controversy on the timing of operation,indication and surgical procedures of hemangioma of liver because of little evidences from laboratory and clinical analysis.In this paper,the current situation and progress of diagnosis and treatment for hemangioma of liver were summarized,and our experiences were introduced.
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Objective To detect the expression of miR-10b in hepatocellular carcinoma (HCC) tissue samples,and to explore its association with clinicopathologic features.Methods qRT-PCR analysis was used to detect expression of miR-10b in 58 HCC tissues (Among them,32 cases were diagnosed with metastasis by pathological analysis,26 cases without metastases at the time of resection) and 10 normal liver tissues.Statistical analysis was used to determine the association of miR-10b expression with clinicopathologic features and prognosis of patients.Results miR-10b was up-regulated both in metastasis-free and metastatic HCC tissues,but its up-regulated degree was much more significant in metastatic HCC tissues (P＜0.05).High miR-10b expression was strongly correlated with the metastasis (P＜0.01) and AJCC stage(P=0.016).But it was not correlated with age,gender,hepatitis B,cirrhosis,tumor size,degree of differentiation,and tumor number.Patients with high miR-10b expression had significantly poorer overall survival(P＜0.01).High miR-10b expression was independent prognostic factors for overall survival (P=0.016).Conclusions The expression of miR-10b is highly up-regulated in HCC tissues,especially in metastatic HCC tissues,indicating that high miR-10b expression may be involved in the process of metastasis and is expected to become a new prognosis reference of HCC.
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Objective To evaluate the pancreaticojejunostomy procedures selection strategy in pancreaticoduodenectomy.Methods The clinical data of 455 patients who received pancreaticoduodenectomy at the Xijing Hospital from June 2007 to June 2012 were retrospectively analyzed.For patients with pancreatic duct diameter≥4 mm,duct-to-mucosa pancreaticojejunostomy(DMPJ)was applied(DMPJ group,210 cases).For patients with pancreatic duct diameter ＜ 4 mm,modified Child pancreaticojejunostomy was applied to 140 patients(modified Child group)whose jejunal end was smaller than the pancreatic stump,and binding pancreaticojejunostomy was applied to 105 patients(binding group)whose jejunal end was bigger than or equal to the pancreatic stump.The clinical efficacy and incidence of postoperative complications were compared among the 3 groups.The count data and measurement data were analyzed by chi-square test and t test,respectively.Results The pancreatic duct diameter of the DMPJ group was(4.4 ± 0.7)mm,which was significantly bigger than(2.8 ± 0.6)mm of the modified Child group and(2.3 ± 0.7)mm of the binding group(t =2.25,2.48,P ＜ 0.05).The diameter of the pancreatic stump of the modified Child group was(36 ± 5)mm,which was significantly bigger than(21 ± 6)mm of the binding group(t =21.65,P ＜ 0.05).The overall incidence of pancreatic leakage was 8.4％(38/455).There were no significant differences in the incidences of pancreatic leakage,peritoneal bleeding,abdominal infection,digestive dysfunction rate and the mean duration of hospital stay among the 3 groups(x2 =0.53,0.88,1.63,5.34,F =2.53,P ＞ 0.05).Conclusion Pancreaticojejunostomy procedure selection strategy based on the diameters of pancreatic duct and pancreatic stump could obtain good clinical efficacy and is appropriate.