The distribution and types of fibronectin (Fn) on vessel wall and platelt surface in human being and rat were studied with rabbit anti-human and rabbit anti-rat Fn antisera and monoclonal antibody against human Fn. It was found that the Fn of mainly cellulartype is chiefly distributed within the layer of subendothelium and near the luminal surface of aorta. In connective tissue of the adventitia there was a large amount of Fn of the plasma and cellular types. The distribution of Fn in the wall of the middle-sized arteries was similar to that in the aortic wall. The Fn of the cellular type in the human aortic subendothelium was more abundant than that in the rat. There were only little amount of Fn on the surface of resting platelet. Nevertheless, when they were activated by thrombin, the amount of Fn on their surface increased, chiefly of the plasma type. The r sult of this work seems to have practical significance in the investigation of the mechanism of platelet adhesion on vessel subendothelium matrix.

Medicine, Chinese Traditional ; Mind-Body Relations, Metaphysical

Objective To determine whether exposure to electromagnetic radiation results in behavioral effects of rat pups.Methods Wistar rats,either male or female,were divided randomly into four groups respectively:control(CTR),100 seconds(S1),1000 seconds(S10)and 3000 seconds(S30),then each of them were exposed to electromagnetic radiation of 100 kV/m field amplitude of corresponding time.For the day of exposure till 2 months later.they were mated with the rats in the same group and their offspring were divided into four groups(F-GTB,F-S1,F-S10,F-S30)correspondingly.Behavioral changes occur in 2-month old and 6-month old rat pups were found between radiation groups and control,and in Y-maze test,beth male and female pups in F-S10 significantly learned fewer times than their control(total study times:male 14.6±3.9 vs 21.1±7.8,female13.4±3.0 vs 25.8±8.8;false times:male 3.5±2.4 vs 7.8±5.4,female 3.4±2.6 vs 11.0±7.2).In open field test,both maze,male pups in F-S1 and F-S30 learned more times than control in total study time(24.2±8.9 vs 14.1±5.2.30.7±12.4 vs 14.1±5.2).In step throush test and open field test,no significant differences were found between radiation groups and control.Conclusion There was significant genetic effect exposed to electromagnetic radiation of 100 kV/m,mainly manifested in rat pups in growth period but without long-term effect.

Background and purpose: Mel-18 is one of the mammalian polycomb group members. A number of related researches have implied that Mel-18 may play a role in human tumorigenesis.In this study, we measured the expression of Mel-18 in gastric carcinoma cells in vivo to explore the expression and clinical significance of Mel-18 in gastric carcinoma. Methods: Real time RT-PCR was used to detect the expression of Mel-18 in cancer tissue and corresponding normal tissue in 52 cases of gastric carcinoma. The association between Mel-18 expression and the clinicopathological parameters of the tumors was analyzed. Results: The analysis revealed that there was significantly decreased expression of Mel-18 in 18 (34.62%)carcinoma tissues in comparison with para-cancer normal tissue. There was no correlation between Mel-18 expression and clinicopathological parameters, such as age, gender, tumor size and histological differentiation (P>0.05).The decrease of Mel-18 expression was significantly negatively correlated with lymph node metastasis and clinical stage (P<0.05). The expression levels of Mel-18 evaluated by the ratios of gene expression were 1.357,0.453,0.183 and 0.170 in stage Ⅰ, Ⅱ,Ⅲ and Ⅳ gastric carcinoma, respectively. They were 0.634 and 0.210 in patients without lymph node metastasis and in patients with lymph node metastasis, respectively. Expression of Mel-18,lymph node metastasis, and clinical stage were significant covariates, respectively (P<0.05). Conclusion: Our results showed that Mel-18 might play a crucial role in tumorigenesis and progression of gastric carcinoma. It is possible that Mel-18 could be used as one of the biomarkers for predicting the prognosis of gastric carcinoma.

0.05).The decrease of Mel-18 expression was signifi cantly negatively correlated with lymph node metastasis and clinical stage(P

The effects of noradrenaline,isoptin.prostaglandin E and indomethacin on the dynamics and the muscloelectrical activities of the ureter were sutdied in dogs.It was found that no-radrenaline exerted excitation on the smooth muscle of the upper ureter,isoptin could remarkably reduce both the electrical and contractile activities of the ureter,prostaglandin E could intensify the activeites of the ureter,and indomethacin could the inhibit the synthesis of intrinsic prostaglandins and in turn relax the smooth muscle of the ureter.

Purpose In order to find out a means that can both meet clinical requirements and reduce radiation dosage in the diagnosis of malignant biliary obstruction, the study aims to evaluate the image quality and the radiation dose of low tube voltage enhanced CT (100 kVp) in displaying malignant biliary obstruction in metal stents. Materials and Methods Between January 2012 and March 2014, 9 patients with highly suspected recurrent occlusion after biliary stent procedure were admitted in Peking Union Medical College Hospital and underwent high resolution three-phase dynamic enhanced CT scan. The CT images on portal veinal phase were reconstructed through the curved planar reformation and the CT values of 184 slices were evaluated along the pathway of the biliary stent. The reconstructed image quality was analyzed when the tube voltage was 140 kVp and 100 kVp respectively, and the different tumor-to-liver contrast-to-noise ratio (CNR) for each lesion, mean image noise, and figure of merit (FOM) between the two data sets were also compared. Results As the tube voltage decreased from 140 to 100 kVp, image noise increased from (19.88±3.62) HU to (24.22±4.24) HU (P<0.001), CNR increased by 15% and FOM improved by 50%. Conclusion A low tube voltage CT technique (100 kVp) improves tumor-to-liver CNR and significantly reduces radiation dose, therefore it is valuable in the manifestation of malignant obstruction in metal stents.

Surgery is the only curative treatment modality for renal cell carcinoma (RCC). However, approximately 30% of patients who undergo successful nephrectomy for RCC will develop locoregional or metastatic recurrence. Effective treatment for recurrent or metastatic RCC is limited. It is known that conventional radiation therapy and chemotherapy are relatively ineffective for RCC patients with distant metastases. Although immune therapy with high dose interleukin can provide disease control for a portion of patients with advanced RCC, its therapeutic effect usually is not sustainable. In addition, substantial adverse effects and complications have limited the use of high dose interleukin treatment. Advances in the understanding at the molecular level of cancer have led to much progress in the development of anti-cancer agents, including drugs of targeted cancer therapy. Targeted therapy is not only effective in cancer treatment, but also has reduced adverse effects compared with conventional chemotherapy and immune therapy. Much progress in the treatment of advanced RCC by targeted therapy has been achieved in recent years. In this review, we will illustrate the roles, mechanisms and effects of several targeted therapy agents, including the two newly FDA-approved drugs, sorafenib and sunitinib, in the treatment of advanced renal cell carcinoma.

Objective To investigate the role of FHIT in NSCLC and the relativity between FHIT and cigarette.Methods 81 cases of NSCLC and 7 cases of the nomal lung tisses were examined for FHIT by immunochemical(S-P).Results The postive expression rates of FHIT were significantly lower than those in nomal lung tisses(P

Objective To evaluate the application of embolic material, iron oxide nanoparticles?lipiodol?gelatin in the improvement of therapeutic effect of microwave ablation in vitrogelatin phantom model and in vivo VX2 renal tumors model. Methods After preparing new embolic material containing nano Fe2O3, in vitro model experiment was firstly conducted to verify the temperature distribution of the microwave ablation. Further verification was performed in bilateral renal VX2 tumors in rabbit model. A total of 10 (20 kidneys) New Zealand White rabbits bearing renal VX2 tumors were treated by renal artery embolization and CT guided microwave ablation, in which left kidneys were treated by material containing nano Fe2O3 in iodized oil and right kidneys were treated by renal embolization with super liquid iodized oil as a control. The same microwave ablation time and power were used for both kidneys. CT perfusion and histopathological examinations were performed to determine the renal perfusion parameters, tumor histopathology and tumor?related angiogenesis. Results In vitro experiments, when nano Fe2O3 was present in the local area at 1cm from the microwave needle at 20 and 60, the temperature reached(59.1 ± 1.7)° C, (95.5 ± 4.5)° C vs.(31.1 ± 2.5)and(45.6 ± 3.5)° C in the controls. Our present results strongly suggested that local nano Fe2O3 particles absorbed microwave and shielded microwave energy transferring to the surrounding tissue. Before and immediately after renal VX2 tumor embolization, blood flow significantly reduced from (31.4 ± 10.6) to (6.1 ± 9.9) ml · 100 ml-1 · min-1. Our pathology findings indicated nano Fe2O3?lipiodol-gelatin embolic agent stored in endovascular regions, while no penetration into the renal parenchyma happened. Conclusions This in vitro model and in vivo experiment suggest that the new embolic material containing nano Fe2O3 may help to improve heat efficiency of MWA microwave, and it is feasible to administer it through transcatheter arterial embolization approach for the microwave ablation therapy of kidney cancer.