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Chan LH, Wang W, Yeung W, Deng Y, Yuan P, Mak KK. Hedgehog signaling induces osteosarcoma development through Yap1 and H19 overexpression. Oncogene 2013; 33:4857-66. [PMID: 24141783 DOI: 10.1038/onc.2013.433] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/06/2013] [Accepted: 09/13/2013] [Indexed: 02/06/2023]
Abstract
Osteosarcoma is one of the most common bone tumors. However, the genetic basis for its pathogenesis remains elusive. Here, we investigated the roles of Hedgehog (Hh) signaling in osteosarcoma development. Genetically-engineered mice with ubiquitous upregulated Hh signaling specifically in mature osteoblasts develop focal bone overgrowth, which greatly resembles the early stage of osteosarcoma. However, these mice die within three months, which prohibits further analysis of tumor progression. We therefore generated a mouse model with partial upregulated Hh signaling in mature osteoblasts and crossed it into a p53 heterozygous background to potentiate tumor development. We found that these mutant mice developed malignant osteosarcoma with high penetrance. Isolated primary tumor cells were mainly osteoblastic and highly proliferative with many characteristics of human osteosarcomas. Allograft transplantation into immunocompromised mice displayed high tumorigenic potential. More importantly, both human and mouse tumor tissues express high level of yes-associated protein 1 (Yap1), a potent oncogene that is amplified in various cancers. We show that inhibition of Hh signaling reduces Yap1 expression and knockdown of Yap1 significantly inhibits tumor progression. Moreover, long non-coding RNA H19 is aberrantly expressed and induced by upregulated Hh signaling and Yap1 overexpression. Our results demonstrate that aberrant Hh signaling in mature osteoblasts is responsible for the pathogenesis of osteoblastic osteosarcoma through Yap1 and H19 overexpression.
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Schlosser K, Deng Y, Stewart DJ. Circulating Extracellular Microrna-21 Is a Biomarker for Disease Activity in the Monocrotaline Rat Model of Pulmonary Arterial Hypertension. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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278
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Jiang B, Deng Y, Taha M, Wen S, Courtman D, Stewart D. Strain-Specific Differences in the Response to Inhibition of VEGFR2 in the SU5416 Model of Severe Plexogenic Pulmonary Arterial Hypertension. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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279
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Shen Y, Xia F, Liu L, Lin W, Liu Y, Shi M, Ren X, Ding B, Chen Y, Jia H, Wang J, Zhao G, Deng Y. Vagus nerve stimulation in 19 patients with drug-resistant epilepsy in Western China. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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280
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Shen Y, Deng Y, Lin W, Zhao G, Wang J, Xia F, Zhang Z, Feng G, Shi M, Liu L, Ren X, Ding B, Zhao Y, Chen Y, Jia H. Seizure freedom of Epilepsia Partialis Continua (EPC) with vagus nerve stimulation (VNS) therapy: A case report. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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281
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Schlosser K, Muleme H, Taha M, Deng Y, Mei S, Stewart D. Transgenic Overproduction of Circulating Angiopoietin-2 Increases Susceptibility to Endotoxin-Induced Lung Injury in Mice. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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282
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Suen C, Deng Y, Stewart DJ. Endothelial Progenitor Cell Therapy Derived Improves Monocrotaline-Induced Pulmonary Arterial Hypertension in Immunodeficient but not Immune Competent Rats. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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283
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Drozd K, Deng Y, Jiang B, Lockwood J, Thorn S, Klein R, Stewart D, Beanlands R, deKemp R, DaSilva J, Mielniczuk L. Elevated Fatty Acid and Glucose Uptake in Right Ventricle in a Sugen 5416/Hypoxia Rat Model of Severe Pulmonary Artery Hypertension. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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284
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Li Y, Deng Y, Tang Y, Yu H, Gao C, Liu L, Liu L, Yao P. Quercetin protects rat hepatocytes from oxidative damage induced by ethanol and iron by maintaining intercellular liable iron pool. Hum Exp Toxicol 2013; 33:534-41. [PMID: 23928830 DOI: 10.1177/0960327113499168] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Accumulating evidence has shown that ethanol-induced iron overload plays a crucial role in the development and progression of alcoholic liver disease. We designed the present study to investigate the potential protective effect of quercetin, a naturally occurring iron-chelating antioxidant on alcoholic iron overload and oxidative stress. Ethanol-incubated (100 mmol/L) rat primary hepatocytes were co-treated by quercetin (100 µmol/L) and different dose of ferric nitrilotriacetate (Fe-NTA) for 24 h. When the hepatic enzyme releases in the culture medium, redox status of hepatocytes and the intercellular labile iron pool (LIP) level were assayed. Our data showed that Fe-NTA dose dependently induced cellular leakage of aspartate transaminase and lactate dehydrogenase, glutathione depletion, superoxide dismutase inactivation, and overproduction of malondialdehyde) and reactive oxygen species (ROS) of intact and especially ethanol-incubated hepatocytes. The oxidative damage resulted from ethanol, Fe-NTA, and especially their combined treatment was substantially alleviated by quercetin, accompanying the corresponding normalization of intercellular LIP level. Iron in excess, thus, may aggravate ethanol hepatotoxicity through Fenton-active LIP, and quercetin attenuated ethanol-induced iron and oxidative stress. To maintain intercellular LIP contributes to the hepatoprotective effect of quercetin besides its direct ROS-quenching activity.
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285
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Wang X, Liao P, Fan X, Wan Y, Wang Y, Li Y, Jiang Z, Ye X, Mo X, Ocorr K, Deng Y, Wu X, Yuan W. CXXC5 Associates with Smads to Mediate TNF-α Induced Apoptosis. Curr Mol Med 2013; 13:1385-96. [DOI: 10.2174/15665240113139990069] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 06/05/2013] [Accepted: 07/23/2013] [Indexed: 11/22/2022]
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286
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Xiao Y, Kang M, Deng Y, He C, Xie Y. P264 Molecular typing of Candida albicans bloodstream isolates by repetitive sequence-based PCR in a Chinese university hospital. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70505-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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287
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Deng Y, Xie M, Lu Q, Wan L, Fang L, Xiang F, Jin B, Li Z. Evaluation of carotid arterial circumferential strain in health subjects by two-dimensional speckle tracking imaging. Int J Cardiol 2013. [DOI: 10.1016/s0167-5273(13)70596-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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288
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Ericson KL, Cooper BR, Peels ME, Deng Y, Smith SM, Coburn SP. Application of Urine Metabolomics to Probe the Effects of Long‐Term Bed Rest as a Model for Spaceflight. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.lb311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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289
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El-Sheikh S, El-Sherbiny S, Barhoum A, Deng Y. Effects of cationic surfactant during the precipitation of calcium carbonate nano-particles on their size, morphology, and other characteristics. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.01.020] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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290
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Fan HN, Wang HJ, Ren L, Ren B, Dan CRY, Li YF, Hou LZ, Deng Y. Decreased expression of p38 MAPK mediates protective effects of hydrogen sulfide on hepatic fibrosis. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2013; 17:644-652. [PMID: 23543448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM To investigate the in vitro and in vivo effects of hydrogen sulfide (H2S) on activated hepatic stellate cells (HSCs) and carbon tetrachloride (CCl4)-induced hepatic fibrosis rats. To explore the in vitro and in vivo expression of Phospho-p38, Phospho-Akt and NF-kB in HSCs treated with H2S. MATERIALS AND METHODS HSC-T6 cells were incubated and activated with 500 µg/L ferric nitrilotriacetate (Fe-NTA), and then were incubated with NaHS, an H2S-releasing molecule for 6, 12, 24 and 48 h. MTT assay was performed to detect cell viability. Propidium iodide (PI) staining was used to determine cell cycle by flow cytometry. Apoptosis was detected with Annexin-V FITC (fluorescein isothiocyanate) and PI (propidium iodide) double staining. Western blotting was performed to detect protein expressions of Phospho-p38, Phospho-Akt and NF-kB. Hepatic fibrosis model was established by intraperitoneal injection of CCl4 in male Wistar rats, and rats were randomly divided into three groups, including healthy control, rats treated with CCl4 + saline, and rats treated with CCl4 + NaHS. Immunohistochemistry analysis was performed to measure protein expression of Phospho-p38 and Phospho-Akt in rat hepatic samples. RESULTS NaHS inhibited the proliferation of Fe-NTA (nitrilotriacetic acid)-induced HSC-T6 cells in a dose-dependent way at 6, 12, 24 and 48 h. NaHS (500 µmol/L) induced G1 phase cell cycle arrest and promoted survival in Fe-NTA-induced HSC-T6 cells. NaHS decreased Phospho-p38 and increased Phospho-Akt expressions in Fe-NTA-induced HSC-T6 cells and CCl4-induced liver fibrosis rats. CONCLUSIONS Exogenous H2S inhibits activated HSC-T6 cells and induces cell cycle arrest and apoptosis. Decreased Phospho-p38 and increased Phospho-Akt expressions may mediate the anti-fibrosis effect by exogenous H2S.
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291
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Zhai L, Zhao J, Xu B, Deng Y, Xu Z. Influence of indoor formaldehyde pollution on respiratory system health in the urban area of Shenyang, China. Afr Health Sci 2013; 13:137-43. [PMID: 23658580 DOI: 10.4314/ahs.v13i1.19] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The decoration of interior spaces can lead to dangerous levels of indoor formaldehyde pollution. Exposure to indoor air pollution may be responsible for nearly 2 million deaths per year in developing countries. OBJECTIVES To assess the prevalence of indoor formaldehyde pollution caused by decoration and resultant respiratory system symptoms exhibited in exposed adults and children, due to indoor formaldehyde pollution caused by decoration. METHODS Survey sites were chosen and indoor formaldehyde concentrations determined according to the standard of formaldehyde in GB50325-2001. Logistic regression models were used to derive odds ratios (ORs) and 95% confidence intervals (95% CIs) after adjusting for potential confounders for this survey. RESULTS Formaldehyde concentration was above the standard in 64% of Shenyang City. Some adults surveyed complained of common respiratory system disorders, including coughing (11.8%), nasal irritation (39.2%), Heterosmia (14.51%), and throat irritation (25.27%); 12% of children suffered from asthma. The analysis identified formaldehyde pollution and ventilation frequency as risk factors for respiratory system disorders in both adults (OR=2.603, [95% CI: 1.770-3.828], OR=1.604, [95% CI: 1.146-2.244], respectively) and children (OR=4.250, [2.064-8.753], OR=1.831, [1.006-3.333], respectively). CONCLUSION The prevalence of common respiratory system disorders was related both to formaldehyde pollution and insufficient ventilation after decorating.
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292
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Kang ZF, Deng Y, Zhou Y, Fan RR, Chan JCN, Laybutt DR, Luzuriaga J, Xu G. Pharmacological reduction of NEFA restores the efficacy of incretin-based therapies through GLP-1 receptor signalling in the beta cell in mouse models of diabetes. Diabetologia 2013; 56. [PMID: 23188390 PMCID: PMC3536946 DOI: 10.1007/s00125-012-2776-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIMS/HYPOTHESIS Type 2 diabetes mellitus is associated with reduced incretin effects. Although previous studies have shown that hyperglycaemia contributes to impaired incretin responses in beta cells, it is largely unknown how hyperlipidaemia, another feature of type 2 diabetes, contributes to impaired glucagon-like peptide 1 (GLP-1) response. Here, we investigated the effects of NEFA on incretin receptor signalling and examined the glucose-lowering efficacy of incretin-based drugs in combination with the lipid-lowering agent bezafibrate. METHODS We used db/db mice to examine the in vivo efficacy of the treatment. Beta cell lines and mouse islets were used to examine GLP-1 and glucose-dependent insulinotropic peptide receptor signalling. RESULTS Palmitate treatment decreased Glp1r expression in rodent insulinoma cell lines and isolated islets. This was associated with impairment of the following: GLP-1-stimulated cAMP production, phosphorylation of cAMP-responsive elements binding protein (CREB) and insulin secretion. In insulinoma cell lines, the expression of exogenous Glp1r restored cAMP production and the phosphorylation of CREB. Treatment with bezafibrate in combination with des-fluoro-sitagliptin or exendin-4 led to more robust glycaemic control, associated with improved islet morphology and beta cell mass in db/db mice. CONCLUSIONS/INTERPRETATION Elevated NEFA contributes to impaired responsiveness to GLP-1, partially through downregulation of GLP-1 receptor signalling. Improvements in lipid control in mouse models of obesity and diabetes increase the efficacy of incretin-based therapy.
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293
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Poon SW, Rowlinson SM, Koh T, Deng Y. Job Burnout and Safety Performance in the Hong Kong Construction Industry. INTERNATIONAL JOURNAL OF CONSTRUCTION MANAGEMENT 2013. [DOI: 10.1080/15623599.2013.10773206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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294
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Sui L, Chang G, Liu Y, Deng Y. Effect of poly-hydroxybutyrate on growth and enzymatic activity of Chinese mitten crab, Eriocheir sinensis, juvenile. COMMUNICATIONS IN AGRICULTURAL AND APPLIED BIOLOGICAL SCIENCES 2013; 78:437-440. [PMID: 25141735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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295
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Li L, Zhu J, Guo SX, Deng Y. Bicluster and regulatory network analysis of differentially expressed genes in adenocarcinoma and squamous cell carcinoma. GENETICS AND MOLECULAR RESEARCH 2013; 12:1710-9. [DOI: 10.4238/2013.may.21.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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296
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Colacchio K, Deng Y, Northrup V, Bizzarro MJ. Complications associated with central and non-central venous catheters in a neonatal intensive care unit. J Perinatol 2012; 32:941-6. [PMID: 22343397 DOI: 10.1038/jp.2012.7] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE The objective of this study is to compare complication rates between peripherally inserted central catheters (PICCs) and peripherally inserted non-central catheters (PINCCs) in the neonatal intensive care unit (NICU). STUDY DESIGN A retrospective, observational study was conducted. The PICCs were catheters whose tip terminated in the vena cavae, and PINCCs were defined as those whose tip fell short of this location. Complication rates were assessed using generalized estimating equations modeling. RESULT A total of 91 PINCCs and 889 PICCs were placed in 750 neonates. In all, 44.0% of PINCCs had a major complication compared with 25.2% of PICCs (P=0.0001). The unadjusted (unadj.) complication rate among PINCCs was 51.7 per 1000 line days and 15.9 for PICCs (unadj. rate ratio: 3.25; 95% confidence interval (CI): 2.32, 4.55). After adjusting for multiple confounders, the risk remained significantly higher for PINCCs (adjusted odds ratio: 2.41; 95% CI: 1.33, 4.37). CONCLUSION The rate of associated complications with the use of PINCCs in the NICU population is more than twice that of the PICCs.
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297
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Wang J, Deng Y, Xu G. Reachability analysis of real-time systems using time Petri nets. ACTA ACUST UNITED AC 2012; 30:725-36. [PMID: 18252405 DOI: 10.1109/3477.875448] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Time Petri nets (TPNs) are a popular Petri net model for specification and verification of real-time systems. A fundamental and most widely applied method for analyzing Petri nets is reachability analysis. The existing technique for reachability analysis of TPNs, however, is not suitable for timing property verification because one cannot derive end-to-end delay in task execution, an important issue for time-critical systems, from the reachability tree constructed using the technique. In this paper, we present a new reachability based analysis technique for TPNs for timing property analysis and verification that effectively addresses the problem. Our technique is based on a concept called clock-stamped state class (CS-class). With the reachability tree generated based on CS-classes, we can directly compute the end-to-end time delay in task execution. Moreover, a CS-class can be uniquely mapped to a traditional state class based on which the conventional reachability tree is constructed. Therefore, our CS-class-based analysis technique is more general than the existing technique. We show how to apply this technique to timing property verification of the TPN model of a command and control (C2) system.
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298
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Floyd SR, Pacold ME, Clarke SM, Blake E, Fydrych A, Ho R, Lee MJ, Root DE, Carpenter AE, Sabatini DM, French CA, Bradner JE, Chen CC, Yaffe MB, Le Rhun E, Massin F, Lefevre A, Bonneterre J, Bittencourt MDC, Faure G, Hiramatsu R, Kawabata S, Yamada Y, Miyatake SI, Kuroiwa T, Li S, Chou AP, Chen W, Chen R, Deng Y, Phillips HS, Faull KF, Cloughesy T, Liau LM, Lai A, Mori K, Ishikura R, Tomogane Y, Izumoto S, Arita N, Piao J, Auyeung G, Policarpio E, Tabar V, Yeung TPC, Morrison L, Hoffman L, Lee TY, Bauman G, Yartsev S, Ryu S, Kolozsvary A, Lapanowski M, Jenrow K, Brown S, Kim JH, Brown RJ, Love J, Warburton D, McBride W, Bluml S, Ren X, Vanderwaal B, Jaboin J, Baldock AL, Anh S, Rockne R, Neal M, Clark-Swanson K, Sterin G, Trister AD, Malone H, Ebiana V, Sonabend AM, Mrugala M, Rockhill JK, Silbergeld DL, Lai A, Cloughesy T, McKhann GM, Bruce JN, Rostomily R, Canoll P, Swanson KR, Hawkins-Daarud A, Baldock A, Bridge C, Corwin D, Rockhill JK, Mrugala MM, Rockne R, Swanson KR, Baldock AL, Yagle K, Anh S, Born D, Swanson P, Rockne R, Swanson KR, Hawkins-Daarud A, Rockne R, Swanson KR. LAB-RADIOBIOLOGY. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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299
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Liao C, Liang X, Huang R, Fang C, Yang X, Deng Y. Clinical outcome of IVF-ET with conventional COS is unaltered by the presence of serum ANA when low-dose, short-term corticosteroid regimen is administered. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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300
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Jiang B, Deng Y, Taha M, Li G, Stewart D. 090 Inhibition of VEGFR2 is Sufficient to Produce Severe Plexogenic Pulmonary Arterial Hypertension in Rats. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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