Through integration of medical imaging resources of 12 community hospitals in the region, a community hospital diagnostic image center was established in 6th hospital. This paper describes the design of the structure and mode of data storage of regional PACS system and the establishment of a database of medical imaging, through which the medical imaging diagnostic level in the community was improved significantly. Through the application of regional PACS system, medical resource was saved and patient treatment facilitated.
Computer Communication Networks ; Information Storage and Retrieval ; methods ; Radiology Information Systems ; Software Design

AIM: To further investagate the mechanism of thrombus formation and develop a new remedy of anti-thrombus formation. METHODS: The amplified DNA fragment of vWF-A1 domain was inserted into expression vector with 6?his taq (pQE-31), the recombinant expression vect or was transformed into E coli (strain M15) and induced by IPTG. The recombinant fragment, comprising residues 449-728 of mature vWF subunit, designate rvWF-A1. It was purified by Ni-NTA agarose column and renatured by Tris buffer containin g GSH and GSSG. FACS and platelet aggregometer were employed to analyse the rvWF -A1 function of binding to platelet glycoprotein Ib and inhibiting ristocetin-in duced platelet aggregation. RESULTS: The rvWF-A1 was expressed successfully in E coli, comin g up to 30% of total bacterial protein. Its purify was over 95% through Ni-NTA a garose. It was identified to have ability to bind to GPIb, its biologic activity to inhibit ristocetin-induced platelet aggregation was observed, and the inhibi tive rate was 84 7%. CONCLUSION: The above results indicated that high-level expressi on of rvWF-A1 was successfully achieved in E coli and rvWF-A1 may be an effectiv e antithromotic agent in preventing thrombus formation.

BACKGROUNDThe gene expressions of the two primary cell types with different morphological phenotypes,namely,cuboidal cells and polygonal cells in so-called pulmonary sclerosing hemangioma(PSH) were still unclear now.Disclosing the different gene expression of the two cell types will provide the basis for the study of histogenesis of PSH tissue and be helpful for differential diagnosis.

METHODSPolygonal and cuboidal cells were obtained from PSH tissue using a laser capture microdissection(LCM) technique.Total RNA was extracted and mRNA levels of cytokeratin(CK),epithelial membrane antigen(EMA),vimentin(VT),surfactant protein B(SP-B),thyroid transcription factor-1(TTF-1),synaptophysin(Syn),and chromogranin A(Ch-A) were analyzed by RT-PCR.

RESULTSThe CK,EMA and SP-B genes were clearly expressed in cuboidal cells,while the VT and Syn genes were clearly expressed and the EMA gene was weakly expressed in polygonal cells.TTF-1 was expressed in both cell types,while neither cell type expressed ChA.

CONCLUSIONSThe differences in morphological phenotype might result from differences in the state of differentiation,cuboidal cells may differentiate into type II pneumocytes,while polygonal cells in stroma possess the multipotency differentiation.

BACKGROUNDSo-called pulmonary sclerosing hemangioma (PSH) is a rare kind of pulmonary tumor. Its histological origin and nature, which have become research hot spots for many years, are still uncertain. The aim of this study is to investigate the immunophenotype of cuboidal cells and polygonal cells through observing the expression of E-cadherin, β-catenin and p120ctn in cuboidal cells and polygonal cells of PSH.

METHODSExpression of E-cadherin, β-catenin and p120 ctn was detected in 25 cases of PSH samples and 8 cases of pulmonary inflammatory pseudotumor samples by immunohistochemistry.

RESULTSImmunohistochemistry results showed that the surface cuboidal cells of PSH were strongly positive on membrane for E-cadherin, β-catenin and p120 ctn , with cytoplasmic positive expression of β-catenin. However,the polygonal cells were negative for E-cadherin, cytoplasmic positive for β-catenin and predominantly cytoplasmic positive and weakly membranous positive for p120ctn . In polygonal cells, all the three adhesion molecules showed heterogenicity staining. The cytoplasm and membrane of inner covering cells in the hemorrhagic pattern were positively stained for E-cadherin, β-catenin and p120ctn . The expression of the three adhesion molecules in hyperplastic type II alveolar cells of pulmonary inflammatory pseudotumor was similar to cuboidal cells of PSH.

CONCLUSIONSIt is concluded that cuboidal cells of PSH may be the hyperplastic type II alveolar cells, whereas polygonal cells are true tumor cells lacking the E-cadherin/catenin complex which is expressed in well differentiated epithelial cells. The inner covering cells in the hemorrhagic pattern of PSH are perhaps epithelial cells as cuboidal cells rather than vascular endothelial cells.

This paper introduces a new application of PACS in our hospital. Through the integration of PACS, HIS and RIS, digital transformation is made in every step. The functional modules of Body Parts Examined in DICOM is set and good link between PACS and DR is made. So the equipment can retrieval the inspection area automatically and make adjustment on the parameters correspondingly. It makes the workflow optimized and improves the efficiency greatly.
Automatic Data Processing ; instrumentation ; methods ; Radiology Information Systems

AIM: To investigate the expression of tissue factor(TF) induced by oxidized high density lipoprotein(oxHDL) in human umbilical vein cell line,ECV304,and the related mechanisms.METHODS: Four main groups were designed: the negative,the positive(ECV304 with histamine),the HDL group and the oxHDL group.Quantitative real-time polymerase chain reaction(RQ-PCR) and Western blotting were used to detect the expression level of TF.The specific inhibitors of MAPKs,SP600125(c-jun terminal NH2 kinase,JNK),SB203580(p38 MAP kinase,p38 MAPK),PD98059(extracellular signal-regulated kinase,ERK1/2) were used to investigate the underlying mechanisms.RESULTS: The TF expression in normal ECV304 cell line was not detected.Histamine administration resulted in a significant expression of TF in ECV304 cell line,with strongest effect after 1 h co-incubation at concentration of 1?10-5 mol/L histamine(about 4.8-fold higher expression of TF compared with that of 1?10-9 mol/L histamine).Expression level of TF was detected after stimulated with oxHDL in dose-and time-dependent manners.The highest expression of TF mRNA was found at 20 mg/L oxHDL and 6 h co-incubation,with 1.8-fold and 5.3-fold increase in TF expression,respectively,compared with that at 10 mg/L oxHDL and 2 h co-incubation.20 mg/L oxHDL also caused an apparent augmentation of TF protein expression,about 1.5-fold higher compared with that stimulated by 40 mg/L oxHDL.HDL co-incubation did not cause a detectable expression of TF protein.The mRNA levels of TF in ECV304 cell line induced by oxHDL were decreased by 95.0%,81.0%,87.0%,respectively(all P

Objective To analyze the genetic characteristics of measles virus in Sichuan province in 2015.Methods Measles virus was isolated from throat swab specimens collected from suspected measles cases.Nucleotide sequences coding for C terminus of nucleoprotein were amplified by RT-PCR and sequenced for phylogenetic analysis.Results 398 measles virus isolates were obtained from 971 throat swab specimens.Phylogenetic analysis showed that 397 belonged to H1 genotype,the sequences homologies were 96.2％-98.0％ compared with H1 genotype reference strain;and all those isolates separated into 2 clusters in phylogenetic tree with the average nucleotide divergence of 2.0％.1 isolate belonged to A genotype,and shared 98.0％ nucleotide homology compared with A genotype reference strain.Conclusions H1 genotype virus remained predominant circulating in Sichuan Province.There was no much genetic variation in N gene.But a minor nucleotide divergence existed between different clusters,leading to 2 transmission chains.

Through integration of medical imaging resources of 12 community hospitals in the region, a community hospital diagnostic image center was established in 6th hospital. This paper describes the design of the structure and mode of data storage of regional PACS system and the establishment of a database of medical imaging, through which the medical imaging diagnostic level in the community was improved significantly. Through the application of regional PACS system, medical resource was saved and patient treatment facilitated.

BACKGROUNDSerine threonine kinase 15 (STK15) is a kind of mitotic kinase. The overexpression of STK15 is significantly associated with carcinogenesis in many tumors, however, its expression and significance in human lung cancer are still unclear. The aim of this study is to investigate the expression of STK15 in squamous cell carcinoma and adenocarcinoma of the lung and to analyze the correlation between STK15 expression and clinicopathological factors.

METHODSThe pattern of STK15 protein expression was detected in 44 squamous cell carcinomas, 36 adenocarcinomas and 20 paracancerous lung tissue samples by immunohistochemistry method using anti-STK15 antibody. The relative quantity of STK15 protein expression was detected by Western blot, and STK15 mRNA expression was detected by RT-PCR in 40 fresh lung cancer samples and corresponding paracancerous lung tissues.

RESULTSPositive expression rate of STK15 protein was 68.75% (55/80) in lung cancer tissues and 0% in paracancerous controls (P < 0.001). STK15 expression was significantly related to differentiation grade of lung cancer (P=0.011), but not to histological classification, TNM stages or lymphatic metastasis (P > 0.05). The relative expression levels of STK15 protein (P < 0.001 ) and STK15 mRNA (P < 0.001) in lung cancer tissues were both significantly higher than those of corresponding paracancerous lung tissues.

CONCLUSIONSThe expression of STK15 protein and STK15 mRNA is significantly higher in lung cancer tissues than that in paracancerous lung tissues. The expression of STK15 correlates with differentiation of lung cancer.

BACKGROUNDIt has been known that the expressions of β-catenin and T cell factor 4 (TCF-4) were associated with clinicopathological parameters in non-small cell lung cancer (NSCLC). The objective of this study is to explore the relationship between expressions of β-catenin and TCF-4 in NSCLC.

METHODSThe expression of β-catenin was detected with immunohistochemistry in 100 lung cancer samples; the relationship between abnormal located and preserved β-catenin with TCF-4 was investigated by immunofluorescence, co-immunoprecipitation and hybridization in situ.

RESULTSThe levels of protein and mRNA were both significantly higher in NSCLC than in corresponding normal lung tissues. Aberrant cytoplasmic and/or nuclear expression of β-catenin were 78.74% (100/127) while aberrant nuclear expression was 37.01% (47/127). Aberrant nuclear β-catenin was significantly associated with differentiation (P=0.0008) and lymphatic metastasis (P=0.017). Positive TCF-4 expression (86.67%, 52/60) was normally seen in nucleus and cytoplasm of cancer cells. The intensity of TCF-4 expression was significantly higher in moderately and poorly differentiated lung cancers than that in well differentiated ones. In total 17 cases of β-catenin (+) and TCF-4 (+) patients, 13 cases were detected with the β-catenin/TCF-4 complex, 61.54% in nucleus and 38.46% in cytoplasm.

CONCLUSIONSThe abnormal mRNA and protein expressions of β-catenin are associated with malignant phenotype in NSCLC. TCF-4 expression is associated with poor differentiation in lung cancers. The β-catenin/TCF-4 complex exists widely in NSCLC.