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Saskatoon, Canada

Paul J.M.,University of Saskatchewan | Templeton S.D.,University of Saskatchewan | Baharani A.,University of Saskatchewan | Freywald A.,University of Saskatchewan | And 2 more authors.
Trends in Molecular Medicine | Year: 2014

The most commonly used therapies for cancer involve delivering high doses of radiation or toxic chemicals to the patient that also cause substantial damage to normal tissue. To overcome this, researchers have recently resorted to a basic biological concept called 'synthetic lethality' (SL) that takes advantage of interactions between gene pairs. The identification of SL interactions is of considerable therapeutic interest because if a particular gene is SL with a tumor-causing mutation, then the targeting that gene carries therapeutic advantages. Mapping these interactions in the context of human cancer cells could hold the key to effective, targeted cancer treatments. In this review, we cover the recent advances that aim to identify these SL interactions using unbiased genetic screens. © 2014 Elsevier Ltd. Source


Duggleby W.,University of Alberta | Doell H.,Saskatchewan Cancer Agency | Cooper D.,Regina QuAppelle Health Region | Thomas R.,University of Ottawa | Ghosh S.,University of Alberta
Cancer Nursing | Year: 2014

Background: The quality of life of male spouses of partners with breast cancer may determine the support they are able to give their wives. Little is known about the factors associated with their quality of life. Objective: The purpose of this study was to examine the relationship of the quality of life of male spouses of partners with breast cancer with the following factors: (a) demographic variables of male spouses and their partners, (b) levels of hope of male spouses and their partners, (c) self-efficacy and loss and grief of male spouses, and (d) quality of life of partners with breast cancer. Methods: Six hundred surveys were mailed to women with breast cancer (stage 1-3) and their male spouses. A total of 110 surveys were completed. Results: With the use of generalized linear modeling, participating male spouses with higher quality of life scores: (a) were older (P = .01), (b) had higher hope scores (P = .01), (c) had lower feelings of guilt scores (P < .01) (subscale of loss and grief), (d) had higher general self-efficacy scores (P < .01), and (e) had partners with breast cancer with higher quality of life scores (P < .01). Conclusions: Hope, self-efficacy, feelings of guilt, age, and their partners' quality of life were significantly related to quality of life of the male spouses of women with breast cancer. Implications for practice: The findings underscore the importance of assessing for and fostering hope and self-efficacy as well as decreasing guilt in male spouses of women with breast cancer to improve their quality of life. Copyright © 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins. Source


Tai P.,Saskatchewan Cancer Agency | Assouline A.,Center Clinique Of La Porte Of Saint Cloud | Joseph K.,University of Alberta | Stitt L.,Clinical Research Unit | Yu E.,University of Western Ontario
Clinical Lung Cancer | Year: 2013

Background: Previous clinical studies have generally reported that prophylactic cranial irradiation (PCI) was given to patients with a complete response (CR) to chemotherapy and chest radiotherapy in limited-stage small-cell lung cancer (SCLC). It is not clear if those with incomplete response (IR) would benefit from PCI. Patients and Methods: The Saskatchewan experience from 1981 through 2007 was reviewed. Patients were treated with chest radiotherapy and chemotherapy with or without PCI (typical doses: 2500 cGy in 10 fractions over 2 weeks, 3000 cGy in 15 fractions over 3 weeks, or 3000 cGy in 10 fractions over 2 weeks). Results: There were 289 patients treated for curative intent, 177/289 (61.2%) of whom received PCI. For the whole group of 289 patients, PCI resulted in significant overall survival (OS) and cause-specific survival (CSS) benefit (P =.0011 and 0.0005, respectively). The time to symptoms of first recurrence at any site with or without PCI was significantly different: 16.9 vs. 13.2 months (P =.0006). PCI significantly delayed the time to symptoms of first recurrence in the brain: 20.7 vs. 10.6 months (P <.0001). The first site of metastasis was the brain for 12.5% and 45.5% patients with CR with and without PCI, respectively (P =.02) and in 6.1% and 27.6% of patients with IR with and without PCI, respectively (P =.05). For the 93 patients with IR, PCI did not confer OS or CSS benefit (P =.32 and 0.39, respectively). Conclusions: Patients with IR benefited from PCI, with a reduced rate of and a delayed time for the development of brain metastases, although without significant OS or CSS benefit. PCI could be considered for all patients with limited-stage SCLC responding to chemoradiation. © 2013 Elsevier Inc. All rights reserved. Source


Ahmed S.,Saskatchewan Cancer Agency | Ahmed S.,University of Saskatchewan | Shahid R.K.,University of Saskatchewan
Current Oncology | Year: 2012

Canada is facing cancer crisis. Cancer has become the leading cause of death in Canada. Despite recent advances in cancer management and research, growing disparities in cancer care have been noticed, especially in socio-economically disadvantaged groups and under-served communities. With the rising incidence of cancer and the increasing numbers of minorities and of social disparities in general, and without appropriate interventions, cancer care disparities will become only more pronounced. This paper highlights the concepts and definitions of equity in health and health care and examines several health determinants that increase the risk of cancer. It also reviews cancer care inequity in the high-risk groups. A conceptual framework is proposed and recommendations are made for the eradication of disparities within the health care system and beyond. © 2012 Multimed Inc. Source


Duggleby W.,University of Alberta | Ghosh S.,University of Alberta | Cooper D.,Regina QuAppelle Health Region | Dwernychuk L.,Saskatchewan Cancer Agency
Journal of Pain and Symptom Management | Year: 2013

Context: Hope is important to cancer patients as it helps them deal with their diagnosis. Little is known about hope in newly diagnosed cancer patients. Objectives: Based on the Transcending Possibilities conceptual model of hope, the purpose of this study was to examine the relationship of hope with pain, energy, and psychological and demographic characteristics in newly diagnosed adult oncology outpatients. Methods: Data from 310 New Patient Assessment Forms from cancer outpatients' health records were collected. Health records from the first six months of 2009 were reviewed and data were collected on hope, energy, pain, depression, anxiety, feeling overwhelmed, and demographic variables. A generalized linear modeling approach was used to study the relationship of hope scores with these variables. Hypothesized variables and variables that were significant at the P = 0.01 level from the univariate analysis were entered into the multivariate model, with hope scores as the dependent variable. Results: Hope scores were significantly negatively related to age (P = 0.02). More specifically, oncology patients who were 65 years of age or older had significantly less hope than those under the age of 65 years (P = 0.01). Gender (P = 0.009) also was a significant factor, with men having higher hope scores than women. No other variables were significant. Conclusion: Older adults comprise the majority of persons in Canada with cancer. The lower hope scores found in this age group compared with their younger counterparts underscore the importance of further research. This study provides a foundation for future research in this important area for oncology patients. © 2013 U.S. Cancer Pain Relief Committee. Published by Elsevier Inc. All rights reserved. Source

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