Purpose To analyze the 64-row spiral CT manifestations and evaluate the diagnostic value in early primary ureteral carcinoma.Materials and Methods Fifteen cases of early primary ureteral carcinoma proved by surgery and pathology were reviewd.Unenhanced scan,enhanced scan in arterial phase,parenchymal phase,delayed phase and CPR construction were performed in all patients.MIP were performed in 10 cases.Results ① the localization of lesions:7cases were located at the right ureter and 8 cases at the left.2 cases were located at the upper portion of the ureter,6 at mid portion,and 7 at lower portion;② CT manifestations:8 cases showed irregular thickened wall and central lumen stenosis,4 cases eccentric soft tissue mass in lumen and crescent or linear vestigial lumen,3 cases soft tissue density and obsolescent lumen;③the enhanced features:the tumor was demonstrated apparent and uniform enhancement in 13 cases,inhomogeneous enhancement in 2 cases after administration of contrast medium;④ the accompanied signs:proximate renal and ureteral presented distention,dropsy in different degrees,5 cases appeared delayed development.Conclusion 64-row spiral CT volume scan and 3D reconstruction with multiplane and multiorientation,combined with axial enhanced scan,can show lesions dimensionly and increase the dignostic accuracy in early primary ureteral carcinoma,which has an important value.

Recent studies showed that white spot syndrome virus(WSSV)isolates from different geographic locations share a high genetic similarity except the variable regions in ORF23/24 and ORF14/15,and variable number of tandem repeats(VNTR)within ORF94.In this study,genotyping was performed according to these three variable regions among WSSV isolates collected during 1998/1999 from Southern China.These WSSV isolates contain a deletion of 1168,5657,5898,9316 and 11093 bp,respectively in the variable region ORF23/24compared with WSSV-TW,and a deletion of 4749 or 5622 bp in the variable region ORF14/15 relative to TH-96-II.Four types of repeat units(RUs)(6,8,9 and 13 RUs)in ORF94 were detected in these isolates,with the shortest 6 RUs as the most prevalent type.Our results provide important information for a better understanding of the spatio-temporal transmission mode and the WSSV genetic evolution lineage.

Carcinoma of urinary bladder is one of the most common tumor.As life rhythm speeding up and lifestyle changing,bladder cancer incident increases year after year.Previous major treatment methods for the disease are open surgery and TURBT,but these therapies can not overcome the characteristics of its recurrence.Since the 21st century along with the rapid development of molecular biology technology,the discovery of Survivin gene,new knowledge about HSP molecules in tumor immunology and the progress of the technique called RNA interference,open up a whole new field for early diagnosis and treatment of bladder carcinoma.Discussing the role of Survivin gene in the development of tumor,survivin antisense RNA' s efficacy and the role of HSP70 in the cancer immunity,the review aims at exploring the possibility of the double gene expression vector constructed by Survivin antisense RNA gene and HSP70 gene for bladder carcinoma therapy.

White spot syndrome virus (WSSV), a unique member within the virus family Nimaviridae, is the most notorious aquatic virus infecting shrimp and other crustaceans and has caused enormous economic losses in the shrimp farming industry worldwide. Therefore, a comprehensive understanding of WSSV morphogenesis, structural proteins, and replication is essential for developing prevention measures of this serious parasite. The viral genome is approximately 300kb and contains more than 180 open reading frames (ORF). However, most of proteins encoded by these ORF have not been characterized. Due to the importance of WSSV structural proteins in the composition of the virion structure, infection process and interaction with host cells, knowledge of structural proteins is essential to understanding WSSV entry and infection as well as for exploring effective prevention measures. This review article summarizes mainly current investigations on WSSV structural proteins including the relative quantities, localization, function and protein-protein interactions. Traditional proteomic studies of 1D or 2D gel electrophoresis separations and mass spectrometry (MS) followed by database searches have identified a total of 39 structural proteins. Shotgun proteomics and iTRAQ were initiated to identify more structural proteins. To date, it is estimated that WSSV is assembled by at least 59 structural proteins, among them 35 are defined as the envelope fraction (including tegument proteins) and 9 as nucleocapsid proteins. Furthermore, the interaction within several major structural proteins has also been investigated. This identitification and characterization of WSSV protein components should help in the understanding of the viral assembly process and elucidate the roles of several major structural proteins.

Objective To explore the effects of combining tumor necrosis factor-α (TNF-αt) inhibitor with adenosine A2b receptor antagonist CVT-6883 on asthmatic lung irflammation in mice.Methods A total of 40 female Balb/c mice were evenly randomized into 5 groups,including normal control group,asthma group,CVT-6883 group,CVT-6883 + etanercept group,and etanercept group.The pathological changes in the lungs were determined and the number of white blood cells(WBC) and eosinophil(EOS) in the bronchoalveolar lavage fluid(BALF) was counted by cell count in each group.The levels of TNF-α in BALF were evaluated by enzyme-linked immunosorbent assay (ELISA).The expression of adenosine A2b receptor mRNA in the lung tissues were measured by reverse transcriptionpolymerase chain reaction (RT-PCR).Results 1.The lung tissue in asthma group,dyed by HE,was found to have a large number of airway inflammatory cell infiltration,thickening of the bronchial mucosa,the alveolar septa widened and fracture.In the CVT-6883,CVT-6883 + etanercept and etanercept group,the pathological changes were relieved.2.The WBC and EOS counts in BALF of the asthma group[(413.8 ±5.8)/L,(139.3 ± 1.4)/L] were higher than those of the normal control group [(24.0 ± 1.3)/L,(1.8 ± 0.1)/L,P ＜ 0.05].The WBC and EOS counts of the CVT-6883 group[(111.5 ±3.8)/L,(3.3 ±0.1)/L],the etanercept group + the CVT-6883 group[(173.8 ±3.9)/L,(10.4 ± 0.2)/L],and the etanercept group[(138.4 ± 3.0)/L,(4.1 ± 0.1)/L] were lower than those of the asthma group (P ＜0.05).3.Compared with the control group(100.4 ± 5.7) ng/L,the TNF-α concentration of the asthma group (145.2 ± 8.8) ng/L was significantly higher (P ＜ 0.05) ; the TNF-α concentration of CVT-6883 group (130.9 ± 5.9) ng/L,CVT-6883 + etanercept group(115.7 ± 8.2) ng/L and the etanercept group(122.0 ± 8.7) ng/L,were significantly decreased compared with asthma group (P ＜ 0.05).4.In asthma group (8.9 ± 1.1) compared with the control group(0.6 ± 0.2),the A2bAR (adenosine A2b receptor) mRNA expression was upregulated (P ＜ 0.05) ; CVT-6883 group(1.6 ±0,3),CVT-6883 + etanercept group(2.5 ±0.6) and the etanercept group(5.3 ±0.4),the A2bAR(adenosine A2b receptor) mRNA expression was significantly decreased compared with asthma group (all P ＜0,05).Conclusion Combination of TNF-α inhibitor with adenosine A2b receptor antagonist can reduce asthmatic lung inflammation.

Breast-specific gamma imaging (BSGI) and positron emission mammography (PEM) have the high resolution in diagnosing breast lesions with minimum diameter of 3 mm.Both BSGI and PEM are functional imaging modalities,which have no relation with breast tissue density,implanted prosthesis,scar formation and so on.This review elaborates the application of BSGI and PEM in the early diagnosis,treatment protocols and evaluation of efficacy for the patients with breast cancer.

BACKGROUND:With the development of tissue engineering, porous bioceramics are more and more used to repair bone defects. Current research focuses on the biological synthesis of this bioceramics and its performance evaluation.
OBJECTIVE:To discuss the preparation of a new kind of bone cement and to determine its physicochemical properties and biocompatibility with osteoblasts.
METHODS:Biphasic tricalcium phosphate powders were prepared using co-precipitation method. The powder was turned into granular stuff by arabic gum. After sintering, porous hydroxyapatite/tricalcium phosphate bioceramics were harvested, and then mixed with alpha-hemihydrate to prepare the bone cement.
RESULTS AND CONCLUSION:X-ray diffraction confirmed that the synthetic substance was a kind of biphasic calcium phosphate ceramic having a porous structure. The bone cement could be in the plastic state within 3 minutes. The curing time was 15 minutes, and the curing temperature was 36.5℃. The maximum compression strength was 5.82 MPa, and the MTT toxicity was level 0. Osteoblasts could grew wel on the material surface.

Objective:To find the threshold value concentration of cobalt causing myocardium cell damage.Methods:Cobalt in different concentrations (10 μg/ml,20 μg/ml,40 μg/ml,80 μg/ml) were added into the medium of cultured myocardium cell of rat (1～3 days old) in vitro.Then the activities of GOT,CK,LDH,HBDH in the medium were measured.Results:The results showed that when cobalt concentration was 10～20 μg/ml,the activity of GOT,CK,LDH,HBDH did not change markedly.But when cobalt concentration was more than 40 μg/ml,the activities of those enzymes increased significantly.Conclusion:The studies demonstrated that the activities of enzymes in the medium of cultured myocardium cell could increase with the difference of coblat concentrations.The threshold value concentration of cobalt which could cause myocardium cell damage is 40 μg/ml.

Objective:To investigate the protection mechanism of rosavin in learning and memory ability in subacute aged rats in-duced by D-galactose. Methods:Totally 48 SD rats were randomly divided into the normal group, model group, positive drug group, and rosavin group respectively at the dose of 6, 12 and 24 mg·g-1 . Except the normal group, the other rats were with neck subcuta-neous injection of D-galactose 120 mg · kg-1 · d-1 . After 4-week drug administration, the learning and memory ability of rats was studied using Morris water maze. PO2 , SaO2 , the activity of superoxide dismutase ( SOD) , catalase( CAT) and glutathione peroxidase ( GSH-Px) and the content of O2 and malonaldehyde( MDA) of rats in vivo were determined at the end of the experiment. Results:The aged rats treated with rosavin(12 or 24 mg·kg-1·d-1) were with significant shortened latent period in Morris water maze(P<0. 01 or P<0. 05), and with reduced total swimming distance and error angle. Meanwhile, rosavin(6,12 or 24 mg·kg-1·d-1) could im-prove the concentration of O2 ,PO2 and SaO2 , the activity of SOD, CAT and GSH-Px in brain, while decrease the content of MDA with certain dose-effect relationship. Conclusion:Rosavin can inhibit D-galactose induced learning and memory decrease in rats, and the effect may be related with the increase of oxygen content, enzyme activity protection of SOD, CAT, MAO and GSH-Px and decrease of MDA generation.

Objective: To study the anti-inflamation effect of Volatile oil of Centipesa minima and the mechanism of action. Method: The “Two-hit” animal model of acute lung injury in rats was induced by oleic acid and lipopolysaccharide, to observe the protective effect of VOCM on acute lung injury in rats. Result: VOCM was able to suppress lung edema and high numbers of neutrophils, decrease the expression of CD54 in the bronchial epithelium tissue in the acute lung injury animal models. Conclusion: VOCM has a protective effect on acute lung injury in rats. Decreasing the expression of CD54 in the bronchial epithelium tissue may be one of its mechanisms of against respiratory tract inflammation.