Acquaintance of the lymph node is very important to evaluate whether the tumor is malignant or benign and therefore to the treatment of the tumors. Lymphography is now considered the gold standard for this purpose. Many computer aided diagnose (CAD) technologies have been developed to help radiologists to diagnose the tumor by the lymphography cases. In this paper, a computer aided diagnose model is constructed by Semi-naive Bayes Classification. The experiments carried out in our laboratory validated the Semi-Naive Bayes Classification on lymphography case. The result of experiments showed that Semi-Naive Bayes Classification could classify lymphography case effectively.
Algorithms ; Bayes Theorem ; Diagnosis, Computer-Assisted ; Humans ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; diagnosis ; Lymphography ; Neoplasms ; diagnosis

Objective To investigate whether baicalein inhibits the proliferation, cell cycle of and pseudopod formation in A431, a skin squamous cell carcinoma cell line, by suppressing the expression of ezrin protein. Methods A431 cells were grouped to be transfected with ezrin-targeting siRNA (siRNA group), treated with baicalein of 5, 10, 20, 40 μmol/L, respectively (baicalein group), or remain untreated (control group). After additional culture, wound healing assay and Transwell assay were performed to observe the migration and invasion of A431 cells, RT-PCR to detect the mRNA expression of ezrin in A431 cells, Western blot and immunoflu-orescence to measure the expression of ezrin protein and its phosphorylation. The pseudopod formation in A431 cells was observed by using scanning electron microscopy. Results After 24-hour culture, wound healing assay displayed that the percent wound closure was 13.3 ± 1.7, 7.6 ±1.6 and 5.9 ± 1.3, respectively, in A431 cells treated with baicalein of 5, 10, 20μmol/L, significantly lower than that in untreated A431 cells (16.3 ± 2.3, all P < 0.01), and the inhibition of baicalein on the migration of A431 cells was concentration-dependent. In the Transwell assay, a significant decrease was observed in the number of A431 cells per high power field permeating through the artificial basement membrane in the groups treated with baicalein of 5, 10, 20 μmol/L for 48 hours compared with the control group (46.5 ± 3.8, 34.3 ± 3.4, 25.3 ± 2.3 vs 56.3 ± 3.8, all P < 0.01), whereas no significant difference was noted between these baicalein-treated groups and siRNA-transfected group (28.3 ± 2.1, all P > 0.05). RT-PCR analysis showed that the mRNA expression of ezrin in baicalein-treated A431 cells significantly decreased compared with that in untreated cells (all P< 0.01), but showed no difference from that in siRNA group (P > 0.05). A statistical difference was also observed in the expression of ezrin and phosphorylated ezrin protein between baicalein-treated A431 cells and untreated cells (all P< 0.05), but not between 40 μmol/L baicalein-treated A431 cells and siRNA-transfected cells (P> 0.05). Furthermore, the suppression of baicalein on ezrin protein and mRNA expression was concentration dependent. The number of pseudopod per cell was significantly lower in 20 μmol/L baicalein-treated A431 cells and siRNA-transfected cells than that in untreated A431 cells (5.3 ± 1.9, 4.5 ± 2.8 vs 22.6 ± 2.8, both P < 0.01), while no significant difference was observed between the former two groups of cells (P > 0.05); the length of pseudopodia also reduced in baicalein-treated cells. Conclusions Baicalein may inhibit the proliferation and invasion of A431 cells by directly or indirectly suppressing the expression of ezrin and phosphorylated ezrin, which in turn contributes to the effect of baicalein against tumor proliferation and metastasis.

Objective To construct targeted ultrasound contrast agent carried goat anti-mouse IgG antibody (UCA-IgG) and evaluate the effectiveness of its targeted adhesion using parallel plate flow chamber. Methods The ultrasound contrast agent targeted to mouse IgG was designed by conjugating monoclonal antibodies against mouse lgG to the lipid monolayer shell of the agent using biotin-streptavidin. The binding of IgG antibodies to the ultrasound contrast agent were identified by fluorescence in vitro. The attachment and detachment of UCA-IgG to mouse IgG immobilized on a culture dish were assessed in a parallel-plate flow chamber. While the plate lacked mouse IgG,or blocked with large number of goat anti-mouse IgG were served as two control groups. Results UCA-IgG issued a bright green fluorescence, while the contral lipid ultrasound contrast agent didn't show fluorescence. The number of UCA-IgG bound to mouse IgG of experimental group was greater than two control groups,increased with increasing coverslips surface antibody concentrations (P<0. 05),and there was significant positive correlation between the number of UCA-IgG bound to mouse IgG and time of combination (P<0.05). The adhesion rate of experimental group increased with shear stress before 0. 5×10-5 N/cm2 (P<0.05) and then decreased (P<0. 05). There was limited adherence of control groups to the UCA-IgG. The stess of half-maximal detachment was increased with increasing coverslips surface antibody concentrations (P<0.05). Conclusions UCA-IgG could adhere to mouse IgG in the physical conditions. It may provide strong supports for studying other targeted ultrasound contrast agent preliminary and fatherly in vitro.

blood of patients.

Objective To study the effect of Tspan 8 on metastasis and invasion of human hepatocellular carcinomas(HCC).Methods RT-PCR and western blot were used to detect the expressions of Tspan 8 in HCC cell lines,HCC and matched nontumorous tissues.The expression of Tspan 8 was then down-regulated by LV/GFP/Tspan 8 in HCC cells.The expressions of Tspan 8 mRNA and protein were determined by RT-PCR and Western blot assay,respectively.The proliferation was examined by MTT,the expression of AMDM12 was assessed by Western blot,and the invasion ability of HCC cells was evaluated by transwells.Results A high level of Tspan 8 was found in high metastatic potential HCC cells,and the expression of Tspan 8 in HCC tissues was much higher than that in the matched nontumorous tissues. Down-regulation of Tspan 8 had no influence on the proliferation of HCC cells (P＞0.05),while it inhibited the expression of ADAM12 and the invasive ability of HCC cells (P＜0.01,P＜0.01 respectively).Conclusion Tspan 8 played an important role in invasion and metastasis of human hepatocellular carcinomas and down-regulation by LV/GFP/Tspan 8 inhibited the invasiveness of human hepatocellular carcinoma cells.

Objective To summarize the reasons of bleeding complications and the prevention methods in stenting for intracranial arterial stenosis.Methods The clinical data of 366 patients underwent stent-assistant angioplasty of intracranial artery stenosis from July 2006 to December 2011were analyzed retrospectively.Among them,14 patients with bleeding complications were found.The initial 100 patients were categorized as early stage group and the rest as mature stage group.The reasons of bleeding and the methods for preventing this complication were summarized.Results The overall incidence of bleeding complication was 3.8％ (14/366).In the early stage group and mature stage group,the rates was 10％(10/100) and 1.5％ (4/266).Six cases were related to the operational manipulation and 8 cases secondary to hyperperfusion injury.Death was found in 6 patients,severe disability in 3,mild paralysis in 2,and no neurological deficits in 3.Conclusions The bleeding complications in stent-assisted angioplasty of intracranial artery stenosis have a high disability and mortality.The improvement of operative techniques and the more strict indications decrease the bleeding complications rate effectively.

Objective To investigate the expression of ezrin in seborrheie keratosis(SK),basal cell carcinoma (BCC).squamous cell carcinoma (SCC)and its relation to elinical pathology parameters.Methods Skin samples were collected from 36 patients with SCC,27 patients with BCC,20 patients with SK and 10 normal human controls.Immunohistochemistry was performed to detect the expression of ezrin in these samples.The relationship between ezrin expression and prognosis of SCC was assessed using COX regression analysis.Results The positivity rate of ezrin in SK,BCC and SCC samples was 25.0%,66.7%,91.3%,respectively,compared to 20.0%in normal controls.Compared with the controls,a significant increase was observed in the expression of ezrin in patients with BCC and SCC(both P＜0.05).but not in those with SK(P＞0.05).Moreover.increased expression level of ezrin was correlated with a high degree of tumor malignancy,advanced pathological stage,and occurrence of lymph node metastasis of SCC (r=0.87,0.80,0.89,respectively,all P＜0.01).COX regression analysis revealed that the expression level of ezrin was an independent factor for the prognosis of SCC.Conclusion The expression level of ezrin is closely related to the malignancy of skin tumors,pathological grading and lymph node metastasis of SCC.

Objective To evaluate the expression of endostatin in bronchoalveolar lavage fluid (BALF) and serum in patients with lung cancer, and to analysis the relationship between endostatin expression and clinical prognosis as well as pathophysiological characteristics. Methods The samples of serum and BALF were obtained from 57 patients with untreated primary lung cancer ( lung cancer group) and 27 patients with benign pulmonary diseases (control group). The levels of endostatin were analyzed by enzyme-linked immunosorbent assay (ELISA). Results The expression of endostatin in serum and BALF in lung cancer group was significantly higher than that in control group ( P ＜0. 01 ). The levels of endostatin in serum and BALF in late-stage ( stage Ⅲ or Ⅳ ) lung cancer patients were significantly higher than that in early-stage ( stage Ⅰ or Ⅱ , P ＜ 0. 01 ).The expression of endostatin both in serum and BALF were significantly higher in adenocarcinoma patients than that in squamous cell carcinoma or SCLC patients. Endostatin concentrations in BALF and serum were significantly greater in patients with lymph node and distant metastasis than those patients without. the expressions of endostatin in serum were closely related to that in BALF in patients with lung cancer ( P = 0. 000). Conclusion The expression of endostatin in serum and in BALF is higher in lung cancer than benign pulmonary diseases and it was associated with TNM stage, lymph node metastasis and clinicopatholgical variables. The level of endostatin in BALF is higher than that in serum and may be used as a significant marker to direct clinic therapy and estimation of prognosis.

Objective The periacetabular tumor has a low rate of incidence, but its special location poses a challenge to clinical treatment.The aim of this study was to discuss the methods, effects, and complications of surgical treatment of periacetabular tumors. Methods We retrospectively analyzed the clinical data of 36 cases of periacetabular tumor surgically treated in our depart-ment, including 21 males and 15 females, aged 15 to 64 (45.2 ±6.3) years.Among them, there were 8 cases of benign tumor (4 ca-ses of simple bone cyst, 1 case of desmoplastic fibromas, 1 case of osteofibrous dysplasia, and 2 cases of hemangioma) and 28 cases of malignant tumor (5 cases of osteosarcomas, 12 cases of chondrosarcomas, 2 cases of giant cell tumor of the bone, 1 case of malignant chondroblastoma, 2 cases of malignant fibrohistiocytoma, and 5 cases of metastatic tumor of the bone).The benign cases received sim-ple tumor resection plus bone graft and steel plate system internal fixation, while malignant cases underwent reconstruction by combined pedicle screw fixation system with bone cement. Results No patients died perioperatively and controllable complications occurred in 5 cases after operation.All the patients were followed up for 5 to 96 months except for 1 case of benign tumor.None of the benign cases experienced recurrence, and all of them achieved normal hip function.Lung metastases occurred in 10 malignant cases (4 cases of os-teosarcomas and 6 cases of chondrosarcomas) , who died of respiratory failure, and the other 18 remained tumor-free after surgery.Of the 2 patients with malignant fibrohistiocytoma, 1 died 2 years postoperatively and the other survived with tumor.Neither local recur-rence nor lung metastasis was found in the patients with chordoma and malignant chondroblastoma till the end of follow-up.The 5 pa-tients with metastases died within 3 years after operation.At 3 months after surgery, the Harris scores after total hip replacement were >90 in the 7 benign cases, 70-79 in 9 malignant cases, and <70 in the other 19 malignant cases. Conclusion For the treatment of malig-nant tumors, reconstruction by combined pedicle screw fixation system with bone cement does not affect the general daily activities of the pa-tients.Preoperative embolization of the internal iliac artery can reduce bleeding and improve operation safety, and measures should be taken to minimize postoperative complications.

Objective To evaluate early warning indexes of percutaneous nephroscope complicated with septic shock and multiple organ dysfunction syndrome and prevention countermeasures.Methods Thirty patients with PCNL complicated with septic shock and MODS were selected from January 2004 to December 2014, and 35 patients suffering from MODS after PCNL were divided into the control groups, and the levels of platelet (PLT), D-dimer (DD), serum albumin (ALB), cholinesterase (CHE) and troponin T (TNT) of patients in two groups were detected.Results PLT, CHE and ALB of patients in observation group were (103.25 ±35.27) ×109/L, (2313.38 ±231.65) U/L and (22.43 ±5.38)g/L, respectively, being significantly lower than those of patients in control group, and TNT and DD were (0.67 ±0.17) ng/mL and (2.56 ±0.93) mg/L, respectively, being significantly higher than those of patients in control group, the differences were statistically significant (P<0.05).PLT, CHE and ALB of death patients in observation group were (87.32 ±21.27) ×109/L, (2109.26 ±219.41) U/L and (19.38 ±4.28) g/L, respectively, being significantly lower than those of survived patients, TNT and DD were (0.78 ±0.13) ng/mL and (3.04 ±0.77) mg/L, respectively, being significantly higher than those of survived patients, the differences were statistically significant (P<0.05).The fatality rate of patients with two organ dysfunctions more than 41.67%.The fatality rate of patients with three organ dysfunctions was 44.44%.The fatality rate of patients with organ dysfunctions more than 4 was 100%. Conclusions for Platelets, D-dimer, serum albumin, cholinesterase and calcium muscular,organ dysfunction number may serve as early warning indexes of patients with postoperative percutaneous nephroscope complicated septic shock and multiple organ dysfunction syndromes.