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Québec -Canada

Annie Gravel, Isabelle Dubuc, Angela Brooks-Wilson, Kristan J Aronson, Jacques Simard, Hector Velasquez-Garcia, John J Spinelli, Louis Flamand
Background Inherited chromosomally-integrated human herpesvirus 6 (iciHHV-6) is a condition observed in approximately 1% of the population. Whether such a genetic alteration predisposes to cancer development in currently unknown. Two studies were conducted to determine whether iciHHV-6 is associated with cancer development. Methods First, a screen of 19,597 people from the province of Quebec was conducted. A replication test, using data from a population-based case-control study of 1090 women with incident breast cancer and 1053 controls from British Columbia and Ontario was conducted...
October 24, 2016: Cancer Epidemiology, Biomarkers & Prevention
Christophe Huỳnh, Joël Tremblay, Marie-Josée Fleury
OBJECTIVES: This study aimed to: (1) identify clusters based on the diagnostic status of mental disorders among individuals with problematic substance use treated in an addiction rehabilitation center (ARC), and (2) characterize these clusters according to socio-demographic variables, neighborhood characteristics, and health service utilization. METHODS: Data were compiled for 4526 individuals with problematic substance use who received services from an ARC in 2004...
December 2016: Journal of Substance Abuse Treatment
Yi Yong, Ammar Saleem, José A Guerrero-Analco, Pierre S Haddad, Alain Cuerrier, John T Arnason, Cory S Harris, Tim Johns
ETHNOPHARMACOLOGICAL RELEVANCE: Larix laricina, a native tree of North America, is a highly respected medicinal plant used for generations by Indigenous Peoples across its range, including the Cree of northern Québec who use the bark to treat symptoms of diabetes. This study investigates the antioxidant capacity and bioavailability of active constituents identified in L. laricina bark extracts. MATERIALS AND METHODS: (1) Oxygen radical absorbance capacity (ORAC) assay was employed to test antioxidant capacity of organic extracts (80% ethanol) from bark of L...
October 20, 2016: Journal of Ethnopharmacology
Lauren E Griffith, Edwin van den Heuvel, Parminder Raina, Isabel Fortier, Nazmul Sohel, Scott M Hofer, Hélène Payette, Christina Wolfson, Sylvie Belleville, Meghan Kenny, Dany Doiron
Standardization procedures are commonly used to combine phenotype data that were measured using different instruments, but there is little information on how the choice of standardization method influences pooled estimates and heterogeneity. Heterogeneity is of key importance in meta-analyses of observational studies because it affects the statistical models used and the decision of whether or not it is appropriate to calculate a pooled estimate of effect. Using 2-stage individual participant data analyses, we compared 2 common methods of standardization, T-scores and category-centered scores, to create combinable memory scores using cross-sectional data from 3 Canadian population-based studies (the Canadian Study on Health and Aging (1991-1992), the Canadian Community Health Survey on Healthy Aging (2008-2009), and the Quebec Longitudinal Study on Nutrition and Aging (2004-2005))...
October 21, 2016: American Journal of Epidemiology
Fabien Gagnon, Patrick Poulin, Jean-Marc Leclerc, Jean-Claude Dessau, Aryan Abab, Pamela Arsenault, Fady El-Turaby, Guillaume Lachance-Paquette, Félix-Antoine Vézina
OBJECTIVES: To invite and support managers of child care centres to measure radon concentrations in their buildings. Their ability to carry out a measurement protocol and communication plan was also evaluated as well as the intention of parents and educators to test for radon at home. PARTICIPANTS: Managers, parents and educators of child care centres. SETTING: 36 child care centres located in two priority investigation areas in Québec. INTERVENTION: A kit containing radon detectors with installation and recovery instructions was shipped by mail in addition to factsheets intended for parents and educators...
October 20, 2016: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
Jennifer R Ballard, Randall Mickley, Samantha E J Gibbs, Chris Dwyer, Catherine Soos, N Jane Harms, H Grant Gilchrist, Jeffrey S Hall, J Christian Franson, G Randy Milton, Glen Parsons, Brad Allen, Jean-Francois Giroux, Stéphane Lair, Daniel G Mead, John R Fischer
Between 1998 and 2014, recurrent mortality events were reported in the Dresser's subspecies of the Common Eider ( Somateria mollissima dresseri) on Cape Cod, Massachusetts, USA near Wellfleet Harbor. The early die-offs were attributed to parasitism and emaciation, but beginning in 2006 a suite of distinct lesions was observed concomitant with the isolation of a previously unknown RNA virus. This novel pathogen was identified as an orthomyxovirus in the genus Quaranjavirus and was named Wellfleet Bay virus (WFBV)...
October 20, 2016: Journal of Wildlife Diseases
Vishal Dey, Audrey Jones, Elaine M Spalding
INTRODUCTION: Telehealth technologies are being widely adopted across the globe for management of long-term conditions. There are limited data on its use, effectiveness and patient experience in end-stage renal disease. The aim of this pilot project was to explore patient acceptability of technology and evaluate its effect on clinical interventions and quality of life in patients undergoing peritoneal dialysis. METHODS: Peritoneal dialysis patients were provided with computer tablets (PODs)...
2016: SAGE Open Medicine
Marie-Josée Fleury, Guy Grenier, Catherine Vallée, Denise Aubé, Lambert Farand, Jean-Marie Bamvita, Geneviève Cyr
BACKGROUND: This study evaluates implementation of the Quebec Mental Health (MH) Reform (2005-2015) which aimed to improve accessibility, quality and continuity of care by developing primary care and optimizing integrated service networks. Implementation of MH primary care teams, clinical strategies for consolidating primary care, integration strategies to improve collaboration between primary care and specialized services, and facilitators and barriers related to these measures were examined...
October 18, 2016: BMC Health Services Research
Isabelle Villeneuve, Mohammed S Lamhamedi, Lahcen Benomar, André Rainville, Josianne DeBlois, Jean Beaulieu, Jean Bousquet, Marie-Claude Lambert, Hank Margolis
Because of changes in climatic conditions, tree seeds originating from breeding programs may no longer be suited to sites where they are currently sent. As a consequence, new seed zones may have to be delineated. Assisted migration consists of transferring seed sources that match the future climatic conditions to which they are currently adapted. It represents a strategy that could be used to mitigate the potential negative consequences of climate change on forest productivity. Decisions with regard to the choice of the most appropriate seed sources have to rely on appropriate knowledge of morpho-physiological responses of trees...
2016: Frontiers in Plant Science
Anaïs Lacasse, Judy-Ann Connelly, Manon Choinière
Background. In order to better design awareness programs on chronic pain (CP), measurement of knowledge, beliefs, and attitudes of people in the community towards this condition is most useful. Objectives. To develop and validate a French-Canadian scale that could be used for this purpose. Methods. Items of the Chronic Pain Myth Scale (CPMS) were developed based on different information sources, reviewed by pain experts, and pretested. The CPMS was administered to 1555 participants among the general Quebec population...
2016: Pain Research & Management: the Journal of the Canadian Pain Society
Saru Singh, Kulvinder Singh, Ruchi Gupta, Nayyamat Kaur, Pranav Bansal, Sanjeet Singh
CONTEXT AND AIM: The assessment of severity of low back pain includes subjective questionnaires to quantify the impact on routine life. The objective of current study was to correlate various quality of life (QOL) scores to the clinical outcome measured as improvement in Visual Analog Score (VAS) after interventional treatment. SUBJECTS AND METHODS: Fifty-one consecutive chronic low backache patients were assessed for pain intensity using VAS, revised Oswestry Disability Index (ODI), Quebec's, Roland-Morris disability questionnaire (RMDQ), and depression score at presentation...
September 2016: Anesthesia, Essays and Researches
Faiz Ahmad Khan, Greg J Fox, Robyn S Lee, Mylene Riva, Andrea Benedetti, Jean-François Proulx, Shelley Jung, Karen Hornby, Marcel A Behr, Dick Menzies
BACKGROUND: Between November 2011 and November 2012, an Inuit village in Nunavik, Quebec experienced a surge in the occurrence of active TB; contact investigations showed that TB infection was highly prevalent (62.6%), particularly among those over age 14 years (78.8%). A nested case-control study showed that nutritional inadequacy was associated with acquisition of infection but not progression to disease. We performed a study to determine whether characteristics of one's dwelling were associated with 1) acquisition of newly diagnosed TB infection and 2) progression to confirmed or probable disease among those with TB infection...
July 2016: CMAJ Open
Charles Nadeau, Laurence Letarte, Ramona Fratu, E Owen D Waygood, Alexandre Lebel
BACKGROUND: The aim of this study was to explore the population-wide distribution in the practice of leisure-time physical activity among Canadian youth and how physical activity level is influenced by contextual features of the environment. METHODS: We studied the self-reported leisure-time physical activity of 54 832 Canadians aged 12 to 17 years. Observations were structured according to a 4-level geographic hierarchy. The outcome studied was a dichotomous indicator that referred to achieving (or not) the recommended daily level of leisure-time physical activity...
July 2016: CMAJ Open
Halima Rakhila, Mahera Al-Akoum, Charles Doillon, Nicolas Lacroix-Pépin, Mathieu Leboeuf, Madeleine Lemyre, Ali Akoum, Marc Pouliot
CONTEXT: Angiogenesis is required for ectopic endometrial tissue growth. Our previous studies showed that prostaglandin F2α (PGF2α) biosynthetic enzymes and receptor were markedly elevated in endometriotic lesions and thatPGF2α is a potent angiogenic factor in endothelial cells. OBJECTIVE: We sought to determine whether or not the F-prostanoid receptor modulates angiogenesis in ectopic stromal cells. DESIGN: Release of angiogenic factors by ectopic endometrial stromal cell primary cultures stimulated with PGF2αand exposed to agents that target PGF2α signaling was assessed...
October 11, 2016: Journal of Clinical Endocrinology and Metabolism
Jean-Frédéric LeBlanc, Myriam Martel, Alan N Barkun
Introduction. Data are conflicting when assessing indications for colorectal self-expandable metallic stents (SEMS) in managing acute malignant large bowel obstruction (MLO). In November 2014, European and American Societies published guidelines to aid in understanding which patients might benefit from colorectal stenting. Yet, there remain marked disparities in clinical practice. Methods. A web-based survey was sent to Gastroenterologists and Surgical Specialists across Quebec to assess physicians' knowledge and adherence to the indications for colonic SEMS placement in the management of MLO using eight clinical scenarios...
2016: Canadian Journal of Gastroenterology & Hepatology
Jasmine Chong, Chelsea Caya, Simon Lévesque, Caroline Quach
CONTEXT: NICUs in the province of Québec have seen an increase in hVICoNS, detected in the clinical laboratory. OBJECTIVE: To investigate the clinical relevance of hVICoNS on the course of infection, and to determine the prevalence of hVICoNS sepsis in the NICU. METHODS: We searched MEDLINE, EMBASE, and PubMed from 1 January 1980 to 1 July 2016. Both observational and interventional studies were considered eligible if they provided data on hVICoNS in the NICU population...
2016: PloS One
Thomas G Poder, Denise Pruneau, Josée Dorval, Louis Thibault, Jean-François Fisette, Suzanne K Bédard, Annie Jacques, Patrice Beauregard
BACKGROUND: Blood warmers were developed to reduce the risk of hypothermia associated with the infusion of cold blood products. During massive transfusion, these devices are used with compression sleeve, which induce a major stress to red blood cells. In this setting, the combination of blood warmer and compression sleeve could generate hemolysis and harm the patient. We conducted this study to compare the impact of different pressure rates on the hemolysis of packed red blood cells and on the outlet temperature when a blood warmer set at 41...
2016: PloS One
Nadine Taleb, Ali Emami, Corinne Suppere, Virginie Messier, Laurent Legault, Martin Ladouceur, Jean-Louis Chiasson, Ahmad Haidar, Rémi Rabasa-Lhoret
AIMS/HYPOTHESIS: The aim of this study was to assess whether the dual-hormone (insulin and glucagon) artificial pancreas reduces hypoglycaemia compared with the single-hormone (insulin alone) artificial pancreas during two types of exercise. METHODS: An open-label randomised crossover study comparing both systems in 17 adults with type 1 diabetes (age, 37.2 ± 13.6 years; HbA1c, 8.0 ± 1.0% [63.9 ± 10.2 mmol/mol]) during two exercise types on an ergocycle and matched for energy expenditure: continuous (60% [Formula: see text] for 60 min) and interval (2 min alternating periods at 85% and 50% [Formula: see text] for 40 min, with two 10 min periods at 45% [Formula: see text] at the start and end of the session)...
October 4, 2016: Diabetologia
Katherine Lippel, Joan M Eakin, D Linn Holness, Dana Howse
BACKGROUND: This study sought to identify impacts of compensation system characteristics on doctors in Québec and Ontario. METHODS: (i) Legal analysis; (ii) Qualitative methods applied to documentation and individual and group interviews with doctors (34) and other system participants (31); and (iii) Inter-jurisdictional transdisciplinary analysis involving cross-disciplinary comparative and integrative analysis of policy contexts, qualitative data, and the relationship between the two...
October 4, 2016: American Journal of Industrial Medicine
Catherine Girouard, Jean-Pierre Grégoire, Paul Poirier, Jocelyne Moisan
PURPOSE: β-Blockers (bisoprolol, carvedilol, and metoprolol) are the cornerstone of heart failure (HF) management. The incidence rate of β-blocker initiation and discontinuation and their associated factors among seniors with a first HF diagnosis were assessed. METHODS: A population-based inception cohort study that included all individuals aged ≥65 years with a first HF diagnosis in Quebec was conducted. β-Blockers initiation among 91,131 patients who were not using β-blockers at the time of HF diagnosis and discontinuation among those who initiated a β-blocker after HF diagnosis were assessed...
2016: Patient Preference and Adherence
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