101
|
Lymberis S, Parhar P, Yee D, Roden D, Jozsef G, DeWyngaert J, Formenti S. Results of Prospective Trial to Determine Optimal Patient Positioning Prone vs. Supine for Whole Breast Radiation. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
102
|
Pervez N, Pearcey R, Parliament M, Yee D, Amanie J, Murtha A, Wachowicz K, Field C, Mackenzie M, Fallone G. Acute Toxicity Results Using Dynamic Intensity Modulated Radiotherapy (dIMRT) in High-Risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
103
|
Le D, Pervez N, Parliament M, Yee D, Amanie J, Mihai A, Murtha A, Field G, Fallone G, Pearcey R. Daily Movement of Prostate Gland and Seminal Vesicles Assessed With Megavoltage CT in Patients Undergoing Hypofractionated/Dose Escalated Conformal Treatment by Tomotherapy for High-Risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1473] [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]
|
104
|
Eipe N, Yee D. Airway management for intra-oral surgery--airway first! Can J Anaesth 2007; 54:488-9; author reply 489. [PMID: 17541082 DOI: 10.1007/bf03022040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
105
|
Kummer C, Netto FS, Rizoli S, Yee D. A review of traumatic airway injuries: potential implications for airway assessment and management. Injury 2007; 38:27-33. [PMID: 17078954 DOI: 10.1016/j.injury.2006.09.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2006] [Accepted: 09/04/2006] [Indexed: 02/02/2023]
Abstract
BACKGROUND Obtaining a patent airway can be difficult in patients with traumatic airway injuries (TAI). There is a paucity of data available about the incidence of airway compromise and techniques used in these patients. METHODS Charts review of all patients with TAI treated in a Regional Trauma Center from July 1989 to June 2005. RESULTS One hundred and four patients were identified as TAI in the study period (incidence of 0.4% for blunt and 4.5% for penetrating trauma). Sixty-eighty patients were victims of penetrating trauma (ISS: 24+/-10; mortality: 16%). Thirty-six patients were blunt trauma victims (ISS: 33+/-16; mortality: 36%). Overall, 65% of the patients received a definitive airway (DA) in the pre-hospital setting or at the initial hospital assessment. Alternative techniques for obtaining DA including wound tracheal tube, surgical airway and intubation under fiberoptic bronchoscopy were used in 30% of the patients. Among 24 deaths, 10 were considered primarily due to the airway injury. Twelve patients presented with thoracic TAI with nine deaths in this subgroup. CONCLUSIONS Overall, the incidence of TAI is low. Blunt trauma TAI is less common, and these patients have a different clinical presentation, higher ISS and mortality than the penetrating TAI group. Early assessment of airways is crucial and DA was required in 2/3 of the patients with TAI. Lower airway injuries have higher mortality than upper airway injuries. Even though most patients died as a result of other injuries, causative factors of death included difficulty in obtaining DA and ventilation/oxygenation problems.
Collapse
|
106
|
Yee D. Targeting insulin-like growth factor pathways. Br J Cancer 2007; 96 Suppl:R7-10. [PMID: 17393578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023] Open
Abstract
Some cancer cells depend on the function of specific molecules for their growth, survival, and metastatic potential. Targeting of these critical molecules has arguably been the best therapy for cancer as demonstrated by the success of tamoxifen and trastuzumab in breast cancer. This review will evaluate the type I IGF receptor (IGF-IR) as a potential target for cancer therapy. As new drugs come forward targeting this receptor system, several issues will need to be addressed in the early clinical trials using these agents.
Collapse
|
107
|
Yee D, Danielson B, Halperin R, Hanson J, Nijjar T, Butts C, Smylie M, Reiman T, Roa W. 2594. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.1008] [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]
|
108
|
Byron SA, Horwitz KB, Richer JK, Lange CA, Zhang X, Yee D. Insulin receptor substrates mediate distinct biological responses to insulin-like growth factor receptor activation in breast cancer cells. Br J Cancer 2006; 95:1220-8. [PMID: 17043687 PMCID: PMC2360584 DOI: 10.1038/sj.bjc.6603354] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Activation of the type I insulin-like growth factor receptor (IGF-IR) regulates several aspects of the malignant phenotype, including cancer cell proliferation and metastasis. Phosphorylation of adaptor proteins downstream of IGF-IR may couple IGF action to specific cancer phenotypes. In this study, we sought to determine if insulin receptor substrate-1 and -2 (IRS-1 and -2) mediate distinct biological effects in breast cancer cells. Insulin receptor substrate-1 and IRS-2 were expressed in T47D-YA breast cancer cells, which lack IRS-1 and -2 expression, yet retain functional IGF-IR. In the absence of IRS-1 and -2 expression, IGF-IR activation was unable to stimulate proliferation or motility in T47D-YA cells. Expression of IRS-1 resulted in IGF-I-stimulated proliferation, but did not affect motility. In contrast, expression of IRS-2 enhanced IGF-I-stimulated motility, but did not stimulate proliferation. The alphaIR-3, an inhibitor of the IGF-IR, was unable to affect these IGF-stimulated phenotypes unless IRS-1 or -2 was expressed. Thus, IGF-IR alone is unable to regulate important breast cancer cell phenotypes. In these cells, IRS proteins are required for and mediate distinct aspects of IGF-IR-stimulated behaviour. As multiple agents targeting the IGF-IR are currently in early clinical trials, IRS expression should be considered as a potential biomarker for IGF-IR responsiveness.
Collapse
|
109
|
Yee D, Pearcey R, Dundas G, Hanson J, Mackenzie M, Robinson D, Underwood L, Field C, Urtasun R, Pervez N, Fallone G. 170 Comparison of tomotherapy versus four-field pelvic box altered fractionation radiotherapy treatment plans for locally advanced squamous cell carcinoma of the cervix. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80911-4] [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]
|
110
|
Yee D, Halperin R, Hanson J, Nijjar T, Butts C, Smylie M, Reiman T, Roa W. 215 Phase I study of hypofractionated dose-escalated thoracic radiotherapy for limited-stage small cell lung cancer. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80956-4] [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]
|
111
|
Danielson B, Yee D, Halperin R, Hanson J, Nijjar T, Butts C, Smylie M, Reiman T, Roa W. 100 Quality of life in patients undergoing dose-escalated hypofractionated thoracic radiotherapy for limited stage small cell lung cancer. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80841-8] [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]
|
112
|
Alexander A, Pedersen J, Murtha A, Yee D, Smerdely M, Sloboda R. 154 Improving assessment (and ultimately out-comes) of permanent prostate implant therapy. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80895-9] [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]
|
113
|
Abstract
Some cancer cells depend on the function of specific molecules for their growth, survival, and metastatic potential. Targeting of these critical molecules has arguably been the best therapy for cancer as demonstrated by the success of tamoxifen and trastuzumab in breast cancer. This review will evaluate the type I IGF receptor (IGF-IR) as a potential target for cancer therapy. As new drugs come forward targeting this receptor system, several issues will need to be addressed in the early clinical trials using these agents.
Collapse
|
114
|
Field C, MacKenzie M, Rathee S, Murray B, Robinson D, Abdulkarim B, Dundas G, Murtha A, Parliament M, Pearcey R, Pervez N, Roa W, Scrimger R, Severin D, Sinha R, Urtasun R, van Vulpen M, Yee D, Fallone G. 197 Introduction of image-guided adaptive radiotherapy techniques. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80674-2] [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]
|
115
|
Kummer C, Netto FS, Rizoli S, Yee D. Airways and ventilation in traumatic airway injury patients: double jeopardy! Can J Anaesth 2006. [DOI: 10.1007/bf03016957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
116
|
Pervez N, Pearcey R, Dundas G, Mackenzie M, Sinha R, Urtasun R, Yee D, Fields C, Halls S, Rivest R, Syme A, Fallone G. Image Fusion and Tomotherapy Treatment Planning for ca. Cervix. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.591] [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]
|
117
|
Yee D, Hanson J, Laut H, Sievert J, Gluck S. 137 Long-term outcomes and toxicity of treatment for nasopharyngeal carcinoma in the Modern Era: Results from a Single Institute in a non-endemic area. Radiother Oncol 2005. [DOI: 10.1016/s0167-8140(05)80298-1] [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]
|
118
|
Makris A, Hisenbeck SG, Yee D, Osborne KC, Elledge RM, Harrison M, Ostler PJ, Mohsin S, Gutierrez CM, Chang JC. A prospective randomized multicenter gene expression study of docetaxel vs doxorubicin/cyclophosphamide preoperative trial in primary breast cancers. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.544] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
119
|
Lau H, Yee D, Mackinnon J, Brar S, Hao D, Gluck S. Concomitant low-dose cisplatin and radiotherapy for locally advanced squamous cell carcinoma of the head and neck (SCCHN): Analysis of survival and toxicity. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.5555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
120
|
Yee D, Lau H, Siever J, Brasher P, Mackinnon J, Gluck S. Concurrent chemoradiotherapy (chemoRT) for nasopharyngeal carcinoma (NPC): 10-year experience at a single institute. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.5573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
121
|
Seifert KA, McMullen CR, Yee D, Reeleder RD, Dobinson KF. Molecular Differentiation and Detection of Ginseng-Adapted Isolates of the Root Rot Fungus Cylindrocarpon destructans. PHYTOPATHOLOGY 2003; 93:1533-1542. [PMID: 18943617 DOI: 10.1094/phyto.2003.93.12.1533] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
ABSTRACT The soilborne fungus Cylindrocarpon destructans (teleomorph: Neonectria radicicola) causes root rot in a wide range of plant hosts; the disease is of particular concern in ginseng production, and in conifer and fruit tree nurseries. beta-Tubulin gene and rRNA gene internal transcribed spacer (ITS) sequence data and pathogenicity assays were used to characterize isolates of C. destructans from ginseng and other hosts. The results of these studies demonstrated a high amount of sequence divergence among strains identified as C. destructans or N. radicicola, suggesting the existence of several phylogenetic species in this complex. Accordingly, we propose that the two varieties of N. radicicola be raised to species status. Certain highly aggressive ginseng isolates from Ontario, Korea, and Japan have identical ITS and beta-tubulin sequences, and form a monophyletic clade (designated "clade a"); these strains are identified as C. destructans f. sp. panacis. Other ginseng strains clustered in monophyletic groups with strains from angiosperm and conifers. A subtractive hybridization method was used to isolate genomic DNA sequences with diagnostic potential from the aggressive C. destructans Ontario ginseng isolate 1640. One of these sequences was similar to the rRNA gene intergenic spacer from a Fusarium oxysporum isolate from Pinus ponderosa, and hybridized to DNA from F. oxysporum and all C. destructans isolates tested. Primers were designed that could be used to amplify this sequence specifically from the highly aggressive, ginsengadapted C. destructans isolates from Ontario and Korea and other members of clade a.
Collapse
|
122
|
Ye JJ, Liang SJ, Guo N, Li SL, Wu AM, Giannini S, Sachdev D, Yee D, Brünner N, Ikle D, Fujita-Yamaguchi Y. Combined effects of tamoxifen and a chimeric humanized single chain antibody against the type I IGF receptor on breast tumor growth in vivo. Horm Metab Res 2003; 35:836-42. [PMID: 14710366 DOI: 10.1055/s-2004-814145] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Proliferative and anti-apoptotic actions of IGFs are mediated by the IGF-I receptor (IGF-IR), to which both IGF-I and -II bind with high affinity. We previously reported that alphaIGF-IR scFv-Fc (scFv-Fc) consisting of the alphaIGF-IR scFv and human IgG (1) Fc domain retained general characteristics of the parental 1H7 monoclonal antibody, and significantly suppressed MCF-7 tumor growth. We proposed IGF-IR down-regulation as a possible mechanism for inhibition of MCF-7 tumor growth. To further determine the therapeutic potentials of this approach, in vivo effects of this antibody on breast tumor growth were evaluated in the absence or presence of tamoxifen (Tam) using a T61 human breast tumor model. T61 xenograft growth in athymic mice was compared under five conditions, PBS, scFv-Fc, Tam, scFv-Fc+Tam, and control antibody. While treatment with PBS and control antibody did not affect T61 tumor growth, scFv-Fc, Tam, and scFv-Fc+Tam treatments significantly suppressed the tumor growth during the first two weeks of treatment. Although the growth inhibitory effect of scFv-Fc during the first two weeks was significant, the tumor grew as rapidly as PBS-treated tumors thereafter. This rapid tumor growth was suppressed when scFv-Fc was combined with Tam. Throughout four weeks, the combined Tam+scFv-Fc treatment was more effective in inhibiting the T61 tumor growth than scFv-Fc or Tam treatment alone. scFv-Fc treatment down-regulated IGF-IR which appears to contribute to tumor growth inhibition. This study provides evidence that simultaneous targeting of IGF-IR and the estrogen receptor may enhance the therapeutic effect.
Collapse
|
123
|
Stevens B, Yee D, Ortiz Ortiz J. Developing culturally appropriate Medicare education materials. ISSUE BRIEF (CENTER FOR MEDICARE EDUCATION) 2002; 2:1-8. [PMID: 11859896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Cultural differences are some of the most subtle, yet critical, factors affecting how people with Medicare understand their benefits, rights and choices. This brief explores the lessons we have learned from an effort to develop and test Medicare education materials suitable for audiences of varying cultural backgrounds.
Collapse
|
124
|
Abstract
Recognition of molecular pathways relevant to cancer biology have led to advances in prevention and treatment. Numerous laboratory and clinical investigations have implicated the insulin-like growth factors (IGFs) in tumourigenesis. In this review, the evidence for the involvement of IGFs in cancer is discussed. While these data are persuasive, it is clear that additional methods to regulate IGF action in cancer patients are needed to substantiate the role of this growth factor family in cancer biology.
Collapse
|
125
|
Jackson JG, Zhang X, Yoneda T, Yee D. Regulation of breast cancer cell motility by insulin receptor substrate-2 (IRS-2) in metastatic variants of human breast cancer cell lines. Oncogene 2001; 20:7318-25. [PMID: 11704861 DOI: 10.1038/sj.onc.1204920] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2001] [Revised: 08/08/2001] [Accepted: 08/14/2001] [Indexed: 11/10/2022]
Abstract
Insulin-like growth factors (IGFs) regulate breast cancer cell proliferation, protect cells from apoptosis, and enhance metastasis. In this study, we examined the IGF signaling pathway in two breast cancer cell lines selected for metastatic behavior. LCC6 was selected for growth as an ascites tumor in athymic mice from parental MDA-MB-435 cells (435P). The MDA-231BO cell line was derived from osseous metastases that formed after intracardiac injection of the MDA-MB-231 cell line in athymic mice. Compared to the parental cell lines, IGF-I treatment enhanced IRS-2 phosphorylation over IRS-1 in the metastatic variants. IGF-I stimulated cell migration in the variant cells, but not in the parental cells. To determine the role for IRS-2 in IGF-mediated motility, we transfected MDA-231BO cells with an anti-sense IRS-2 construct. Transfected cells had decreased levels of IRS-2 with diminished IGF-mediated motility and anchorage independent growth when compared to control cells. However, adherence to fibronectin was enhanced in the transfected cells compared to MDA-231BO cells. Our data show that breast cancer cells selected for metastatic behavior in vivo have increased IRS-2 activation and signaling. In these cells, IGF-I enhances cell adhesion and motility suggesting that IRS-2 may mediate these aspects of the malignant phenotype.
Collapse
|