76
|
Hasan Y, Kim L, Wloch J, Chi Y, Liang J, Martinez A, Yan D, Vicini F. Comparison of Planned Versus Actual Dose Delivered for External Beam Accelerated Partial Breast Irradiation Using Cone-Beam CT and Deformable Registration. Int J Radiat Oncol Biol Phys 2011; 80:1473-6. [DOI: 10.1016/j.ijrobp.2010.04.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Revised: 03/30/2010] [Accepted: 04/03/2010] [Indexed: 11/29/2022]
|
77
|
English RE, Li J, Parker AJC, Roskell D, Adams RF, Parulekar V, Baldwin J, Chi Y, Noble JA. A pilot study to evaluate assisted freehand ultrasound elasticity imaging in the sizing of early breast cancer: a comparison of B-mode and AFUSON elasticity ultrasound with histopathology measurements. Br J Radiol 2011; 84:1011-9. [PMID: 21632651 DOI: 10.1259/bjr/13216246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE This pilot study investigates the role of assisted-freehand ultrasound (AFUSON) elasticity imaging of the breast in assessing the contour, size and area of 23 early breast cancers by making comparison of AFUSON with the equivalent B-mode ultrasound images and gold standard histopathology slides. METHODS The B-mode, AFUSON and digitised histopathology slides of three early breast cancers were compared for contour, size and area with histopathology scans. AFUSON features that corresponded to areas of known malignant change on the histopathology slides were regarded as diagnostic. These diagnostic criteria were then applied to the B-mode and AFUSON elasticity images of all 23 breast cancers in the pilot study without having the availability of the histopathology scans for reference. Corresponding diameters were measured and the results were compared with the equivalent measurements on the scans of the histology slides. The results were tabulated in histogram form. Diagnostic confidence levels were evaluated. RESULTS Size dimension accuracy increased from 66% using B-mode alone to 82% using combined B-mode and AFUSON elasticity images. Tumour area accuracy was also increased. A small number of cases had a striking visual similarity of shape on AFUSON elasticity scans and histopathology slides. CONCLUSION In spite of the shortfalls in this study, AFUSON elasticity imaging was capable of acquiring some high-quality images that showed strong correlation between AFUSON elasticity and scans of histology slides. Further studies will be carried out to refine the technique and determine if it has a role in the diagnosis and management of breast cancer.
Collapse
|
78
|
Nakatani S, Wei M, Ishimura E, Kakehashi A, Mori K, Inaba M, Wanibuchi H, Li Y, Liu J, Wang B, Liu M, Chi Y, Marquez E, Riera M, Rigol J, Pascual J, Soler MJ, Grosjean F, Esposito V, Torreggiani M, Madek JM, Williams VA, Zheng F, Vlassara H, Jepsen KJ, Striker GE, Yuan Y, Zhao L, Chen Y, Moorhead J, Varghese Z, Sun Z, Ruan X, Kuno Y, Iyoda M, Shibata T, Hirai Y, Akizawa T. Diabetes / Basic research. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
79
|
Wang J, Chi Y, Zhan XK, Xie GR, Wang ZZ, Xiao W, Wang YG, Hu JF, Yu H, Yang L, Cui CX, Xiong FX. An open-labeled, randomized, multicentered, phase IIa study for advanced cancer treatment by gambogic acid injection (THS). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e13095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
80
|
Chi Y, Zheng Z, Zhou A, Yang L, Qu T, Jiang W, Shi S, Sun Y, Song Y, Kang S, Wang J. Randomized, single-centered, phase II clinical trial of nimotuzumab plus cisplatin and S-1 as first-line therapy in patients with advanced gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
81
|
Chi Y, Wang J, Zhan X, Xie G, Wang Z, Xiao W, Wang Y, Hu J, Yu H, Yang L, Cui C, Xiong F, Zheng J. P53 Open-label, randomised, multicentre, phase 2a study of gambogic acid injection (THS) for treatment of advanced cancer. EJC Suppl 2011. [DOI: 10.1016/j.ejcsup.2011.02.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
82
|
Fedson S, Mizra M, Chi Y, Husain A. 45 Antibody-Mediated Rejection in Heart Transplantation: Clinical Follow-Up. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
83
|
Lee D, Liang J, Li S, Chi Y, McGrath S, Grills I, Chen P, Krauss D, Martinez A, Yan D. Analysis of Actual Delivered Dose and Volumetric Changes of Head and Neck Structures for Locally Advanced Oropharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
84
|
Finnson KW, Parker WL, Chi Y, Hoemann CD, Goldring MB, Antoniou J, Philip A. Endoglin differentially regulates TGF-β-induced Smad2/3 and Smad1/5 signalling and its expression correlates with extracellular matrix production and cellular differentiation state in human chondrocytes. Osteoarthritis Cartilage 2010; 18:1518-27. [PMID: 20833252 DOI: 10.1016/j.joca.2010.09.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 08/12/2010] [Accepted: 09/03/2010] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Transforming growth factor-β (TGF-β) plays a critical role in cartilage homeostasis and deregulation of its signalling is implicated in osteoarthritis (OA). TGF-β isoforms signal through a pair of transmembrane serine/threonine kinases known as the type I and type II TGF-β receptors. Endoglin is a TGF-β co-receptor that binds TGF-β with high affinity in the presence of the type II TGF-β receptor. We have previously shown that endoglin is expressed in human chondrocytes and that it forms a complex with the TGF-β signalling receptors. However, the functional significance of endoglin expression in chondrocytes is unknown. Our objective was to determine whether endoglin regulates TGF-β/Smad signalling and extracellular matrix (ECM) production in human chondrocytes and whether its expression varies with chondrocyte differentiation state. METHOD Endoglin function was determined by overexpression or antisense morpholino/siRNA knockdown of endoglin in human chondrocytes and measuring TGF-β-induced Smad phosphorylation, transcriptional activity and ECM production. Alterations in endoglin expression levels were determined during subculture-induced dedifferentiation of human chondrocytes and in normal vs OA cartilage samples. RESULTS Endoglin enhances TGF-β1-induced Smad1/5 phosphorylation and inhibits TGF-β1-induced Smad2 phosphorylation, Smad3-driven transcriptional activity and ECM production in human chondrocytes. In addition, the enhancing effect of endoglin siRNA knockdown on TGF-β1-induced Smad3-driven transcription is reversed by ALK1 overexpression. Furthermore, endoglin levels are increased in chondrocytes following subculture-induced dedifferentiation and in OA cartilage as compared to normal cartilage. CONCLUSION Together, our results suggest that endoglin regulates the balance between TGF-β/ALK1/Smad1/5 and ALK5/Smad2/3 signalling and ECM production in human chondrocytes and that endoglin may represent a marker for chondrocyte phenotype.
Collapse
|
85
|
English R, Li J, Parker A, Roskell D, Adams RF, Parulekar V, Baldwin J, Chi Y, Noble A. A pilot study to evaluate assisted freehand ultrasound elasticity imaging in the sizing of early breast cancer: a comparison of B-mode and assisted freehand ultrasound elasticity ultrasound with histopathology measurements. Breast Cancer Res 2010. [PMCID: PMC2978823 DOI: 10.1186/bcr2659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
86
|
Serres M, Kossatz U, Chi Y, Roberts J, Malek N, Besson A. R47: p27Kip1 contrôle la cytocinèse via la régulation de l’activité de citron-kinase. Bull Cancer 2010. [DOI: 10.1016/s0007-4551(15)30964-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
87
|
Zhang Y, Li W, Chi Y, Wang R, Wang D, Zhang F, Liu Z, Matsuura E, Liu Q. Recombinant domain V of 2-glycoprotein I inhibits the formation of a 7-ketocholesteryl-9-carboxynonanoate and 2-glycoprotein I complex. J Biochem 2010; 149:35-42. [DOI: 10.1093/jb/mvq111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
88
|
Liang J, Yan D, Chi Y. SU-GG-T-36: Influence of Dose Grid Resolution in Cumulative Dose Computation for 4D Inverse Planning. Med Phys 2010. [DOI: 10.1118/1.3468422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
89
|
Chi Y, Liang J, Yan D, Wuu C, Chen H, Chao K. SU-GG-J-88: Evaluation of Phase Sampling Methods for 4D Dose Accumulation. Med Phys 2010. [DOI: 10.1118/1.3468312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
90
|
Chi Y, Qin X, Liang J, Yan D. TH-D-303A-01: Optimal Phase Sampling On 4DCTs for Dose Accumulation. Med Phys 2009. [DOI: 10.1118/1.3182683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
91
|
Liang J, Chi Y, Qin X, Yan D. SU-FF-J-34: Can 4D Dose Be Constructed Without Using Deformable Organ Registration? Med Phys 2009. [DOI: 10.1118/1.3181326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
92
|
Yan JH, Zhu HM, Jiang XG, Chi Y, Cen KF. Analysis of volatile species kinetics during typical medical waste materials pyrolysis using a distributed activation energy model. JOURNAL OF HAZARDOUS MATERIALS 2009; 162:646-651. [PMID: 18579296 DOI: 10.1016/j.jhazmat.2008.05.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Revised: 05/14/2008] [Accepted: 05/15/2008] [Indexed: 05/26/2023]
Abstract
The complex reactions of typical medical waste materials pyrolysis and the evolution of different volatile species can be well represented by a Distributed Activation Energy Model (DAEM). In this study, A thermogravimetric analyser (TGA), coupled with Fourier transform infrared analysis of evolving products (TG-FTIR), were used to perform kinetic analysis of typical medical waste materials pyrolysis. A simple direct search method was used for the determination of DAEM kinetic parameters and the yield of individual pyrolysis products under any given heating condition. The agreement between the model prediction and the experimental data was generally good. The results can be used as inputs to a pyrolysis model based on first-order kinetic expression with a Gaussian Distribution of Activation Energies as a sub-model to CFD code.
Collapse
|
93
|
Fragkoudis R, Chi Y, Siu RWC, Barry G, Attarzadeh-Yazdi G, Merits A, Nash AA, Fazakerley JK, Kohl A. Semliki Forest virus strongly reduces mosquito host defence signaling. INSECT MOLECULAR BIOLOGY 2008; 17:647-56. [PMID: 18811601 PMCID: PMC2710796 DOI: 10.1111/j.1365-2583.2008.00834.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The Alphavirus genus within the Togaviridae family contains several important mosquito-borne arboviruses. Other than the antiviral activity of RNAi, relatively little is known about alphavirus interactions with insect cell defences. Here we show that Semliki Forest virus (SFV) infection of Aedes albopictus-derived U4.4 mosquito cells reduces cellular gene expression. Activation prior to SFV infection of pathways involving STAT/IMD, but not Toll signaling reduced subsequent virus gene expression and RNA levels. These pathways are therefore not only able to mediate protective responses against bacteria but also arboviruses. However, SFV infection of mosquito cells did not result in activation of any of these pathways and suppressed their subsequent activation by other stimuli.
Collapse
|
94
|
Liu J, Wang HH, Gao W, Chi Y, Tian Y. Cervical esophageal capillary hemangioma removed by combined and sequential endoscopic ligation and snare polypectomy. Endoscopy 2008; 40 Suppl 2:E179-80. [PMID: 18668466 DOI: 10.1055/s-2007-995810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
|
95
|
Liang J, Chi Y, Yan D. Cone Beam CT Image Based Adaptive Inverse Planning for Head and Neck Cancer: A Validation Study. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
96
|
Feng W, Deng J, Chi Y, Drake D, Bakalyar D, Yan D. SU-GG-J-130: Monte Carlo Simulation of Elekta XVI Cone Beam System and Dose Distribution in CTDI Phantom. Med Phys 2008. [DOI: 10.1118/1.2961679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
97
|
Chi Y, Liang J, Zhang T, Yan D. SU-GG-J-42: Automatic Contour Delineation On Cone Beam CT (CBCT) and Verification. Med Phys 2008. [DOI: 10.1118/1.2961600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
98
|
Han ZB, Ren H, Zhao H, Chi Y, Chen K, Zhou B, Liu YJ, Zhang L, Xu B, Liu B, Yang R, Han ZC. Hypoxia-inducible factor (HIF)-1 directly enhances the transcriptional activity of stem cell factor (SCF) in response to hypoxia and epidermal growth factor (EGF). Carcinogenesis 2008; 29:1853-61. [DOI: 10.1093/carcin/bgn066] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|
99
|
Yan D, Liang J, Chi Y, Zhang T, Zhang P. Patient Anatomy/Dose Tracking and Feedback System for Image Guided Adaptive Radiotherapy. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
100
|
Hasan Y, Kim L, Wloch J, Chi Y, Liang J, Kestin L, Martinez A, Yan D, Vicini F. Comparison of Planned Versus Actual Dose Delivered for External Beam Accelerated Partial Breast Irradiation (EB APBI) Using Cone-Beam CT (CBCT) and Deformable Registration. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|