Objective:To investigate the expression of vascular endothelial growth factor-C(VEGF-C) and vascular endothelial growth factor receptor 3(VEGFR-3)and the correlation with the lymph node metastasis in esophagus squamous cell carcinoma.Methods:72 esophagus squamous cell carcinoma cases with complete clinical,pathological and following-up data were included in this study.Immunohistological method SABC was used to detect the expression of VEGF-C and VEGFR-3.Results:(1)The VEGF-C positive rate in esophagus squamous cell carcinomas is 59.72%(43/72).The mean number of VEGFR-3 vessel in VEGF-C positive group is 5.02?2.24 per high power field(HPF),while is 2.82?0.16 per HPF in VEGF-C negative group.The former is significantly higher than the later ( P

Objective To investigate the expressions of COX-2 and VEGF-C in breast carcinoma and their correlation with lymphangiogenesis and lymph node metastasis. Methods The expressions of COX-2 and VEGF-C and D2-40 were evaluated in 46 cases of breast carcinoma by immunohistochemical staining SP methods. The lymphatic vessels density (LVD) in tumor was counted through the special marker D2-40. Results The positive rate of COX-2 and of VEGF-C was 73.91% (34/46) and 71.74% (33/46) respectively in breast carcinoma tissues. The positive rate of COX-2 and VEGF-C was 86.48% (32/37) and 81.08% (30/37), and LVD was (13.350?3.097)/?200 in the lymph node metastasis group, while that in non-lymph-node metastasis group was 22.22% (2/9), 33.33% (3/9) and (9.560?2.031)/?200 respectively, with significant difference between the two groups (P

Objective By comparing the biological characteristics among Lewis lung cancer cells ( LLC) , LLC or-thotopic transplantation derivative cells ( R1-LLC) and R1-LLC orthotopic transplantation derivative cells ( R2-LLC) , we e-valuate their invasion and metastatic abilities in orthotopic transplantation models.Methods In vitro, we applied CCK8, clonogenic assay, and Transwell invasion assay to detect the proliferation ability, invasion ability and morphologic structures of LLC,R1-LLC, R2-LLC cells respectively, meanwhile observing morphologic structures by transmission electron microsco-py.In vivo, we constructed LLC, R1-LLC and R2-LLC orthotopic transplantation models.Herein, we observed their tumor growth and metastasis.The tumor formation rate and tumor-forming time were recorded for statistic analysis.Results In vitro:LLC, R1-LLC and R2-LLC cells showed no significant difference in proliferation ability ( P>0.05 ) , but significant differ-ences in invasion ability:R2-LLC>R1-LLC>LLC(P<0.05).In vivo:In the orthotopic group, the tumor formation rates of LLC, R1-LLC and R2-LLC cells were 66.67%、80%、93.33%(P <0.05).Conclusions In orthotopic implantation mouse models, R2-LLC cells present higher invasion and metastatic ability than R2-LLC and LLC cells.

A well Web-based teaching supplementary system is beneficial for saving teaching resources,arousing students’enthusiasm for study.but there is no the emotion exchange between teachers and students which exists in traditional class.Web-based supplementary teaching is an important supplementary method for medical morphology courses,but it can not replace the traditional teaching method.Combining them each other is needed for raising teaching quality.

Objective To explore the effect of xanthine oxidase inhibitor allopurinol on cardiomyocyte apoptosis in rats after myocardial infarction(MI).Methods MI model was established by the ligation of anterior descending coronary artery.The survivors were randomly divided into 3 groups: sham operation group(n=5),MI group(n=16) and allopurinol group(n=15,receiving allopurinol 50 mg?kg-1? d-1).After 28 days,the infarct size was measured.In non-infarcted zone(NIZ),cardiomyocyte apoptosis was detected by TUNEL;the expression of Fas was detected by immunohistochemistry;the expressions of xanthine oxidase(XO) and caspase 3 were detected by Western blot.In addition,the activities of XO and ?O-2,?OH-scavenging in NIZ were detected by colorimetry.Results Compared with sham operation group,the apoptosis index and expressions of Fas,XO,caspase 3 in NIZ were significantly increased in MI group.The activity of XO was increased but the activities of ?O-2 and ?OH-scavenging were decreased(P0.05).Conclusion Allopurinol could inhibit the cardiomyocyte apoptosis in NIZ in rats.The protective mechanism of allopurinol involves the reduction of reactive oxygen species and depression of the expressions of Fas and caspase 3.

Test is an important way for getting feedback from students about teaching. The traditional examination is not suitable for the requirements of modernization teaching.Web-Based Course Examination of practice pathology simplifies the process of traditional examination greatly. It is one of the important means in modernization teaching.

Objective:To study the effect of alum on immune response in mice induced by HBoV1 VP2 VLPs.Methods:BABL/c mice were randomly divided into VLPs experimental group, alum adjuvant experimental group, PBS control group and alum adjuvant control group,the experimental group mice were intramuscular immunization with HBoV1 VP2 VLPs and HBoV1 VP2 VLPs added alum,control group mice were immunization with alum or PBS buffer,then to study the effect of alum on immune response in mice induced by HBoV1 VP2 VLPs by cellular and humoral immune strength.Results: Alum adjuvant decreased cellular immune response induced by HBoV1 VP2 VLPs(P<0.001),enhance the HBoV1 VP2 VLPs immuned serum IgG titer(P<0.05)and IgG activity(P<0.01).Conclusion:Alum adjuvant can enhance humoral immune response induced by HBoV1 VP2 VLPs,but weaken cellular immune response induced by HBoV1 VP2 VLPs,when HBoV1 VP2 VLPs used as a prophylactic vaccine it should add alum adjuvant,when used as a therapeutic vaccine,it should not add alum adjuvant.

Objective To investigate the protective effect of Calcitonin Gene-related Peptide(CGRP)on ET-1 mediated injury of human hepatocyte.Methods Human liver tissues obtained from patients undergoing partial hepatectomies were randomly divided into five groups:control group,liver perfused with D-Hank's solution group;liver perfused with ET-1 group and three liver perfased with ET plus CGRP(10-6M,10-7M,10-8M)treated groups.Collagenase digestion method was used to isolate human hepatocytes,then hepatocytes were cultured,and the level of MDA and TNF-?,the viability and proliferation of hepatocyte,and the hepatocyte function(ALT,Alb,Urea and LDH)were determined.Results As compared with control group,in ET-1 group,the viability and proliferation of hepatocytes,the level of Alb and Urea declined significantly(P

Objective To explore the cause constituents of neonatal severe hyperbilirubinemia and the clinical efficacy and safety of blood exchange transfusion treatment .Methods 142 neonates with severe hyperbilirubinemia conducted the blood exchange transfusion therapy .The levels of serum total bilirubin ,indirect bilirubin and direct bilirubin and the change of blood routine indica-tors were analyzed before and after blood exchange transfusion .Results The main causes leading to neonatal severe hyperbilirubi-nemia were bacterial infection(28 .20% ) ,glucose-6-phosphate dehydrogenase(G6PD) deficiency(27 .50% ) and pregnant women with ABO blood group incompatibility (16 .20% ) .The levels of serum total bilirubin ,indirect bilirubin ,direct bilirubin and blood routine indicators after operation in neonates with severe hyperbilirubinemia were significantly lower than those before operation , the differences were statistically significant (P<0 .05) .The total bilirubin swap exchange was (54 .40 ± 9 .90)% .The intraoperative adverse reactions rate was 3 .50% .The postoperative thrombocytopenia occurrence rate was 72 .00% .Conclusion The blood ex-change transfusion for treating neonatal severe hyperbilirubinemia possesses has clinical significance ,but the hematology and bio-chemical indicators monitoring should be strengthened for avoiding adverse reactions occurrence .

Objective To observe the levels of interferon gamma-induced protein 10(IP-10)in children with acute viral and bacterial infection.Methods There were three groups:acute viral infection group(51 ca-ses),acute bacterial infection group(52 cases),and healthy control group(51 cases).Serum IP-10 levels were detected by enzyme linked immunosorbent assay(ELISA),and serum C reactive protein(CRP)were deter-mined with BNⅡ automatic protein analyzer.Results The level of serum IP-10 and CRP were significantly different in different groups(P<0.05).Compared with control group,the level of IP-10 and CRP were higher in acute viral infection group or in acute bacterial infection group(P<0.05).The level of IP-10 was higher in acute viral infection group than that in acute bacterial infection group(P>0.05).The level of CRP was higher in bacterial infection group than that in acute viral infection group(P<0.05).The IP-10 levels in viral Infec-tion patients were not correlated with the CRP levels.The area under curve(AUC),sensitivity and specificity of IP-10 and CRP were 0.688 and 0.873,35.0% and 79.6%,96.1% and 98.0%.When cut-off value of predic-tive probability was 0.713,sensitivity and specificity were increased to 82.5% and 100.0%.Conclusion Ser-um IP-10,CRP and predictive probability are valuable in the diagnosis of acute pathogen infection in children.