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Yat Hei Leung, Francois Belanger, Jennifer Lu, Jacques Turgeon, Veronique Michaud
BACKGROUND: Drug-induced myopathy is a serious side effect that often requires removal of a medication from a drug regimen. For most drugs, the underlying mechanism of drug-induced myopathy remains unclear. Monocarboxylate transporters (MCTs) mediate L-lactic acid transport, and inhibition of MCTs may potentially lead to perturbation of L-lactic acid accumulation and muscular disorders. Therefore, we hypothesized that L-lactic acid transport may be involved in the development of drug-induced myopathy...
March 7, 2018: Current Pharmaceutical Biotechnology
Julie Gauthier, Inge A Meijer, Davor Lessel, Niccolò E Mencacci, Dimitri Krainc, Maja Hempel, Konstantinos Tsiakas, Holger Prokisch, Elsa Rossignol, Margaret H Helm, Lance H Rodan, Jason Karamchandani, Miryam Carecchio, Steven J Lubbe, Aida Telegrafi, Lindsay B Henderson, Kerry Lorenzo, Stephanie E Wallace, Ian A Glass, Fadi F Hamdan, Jacques L Michaud, Guy A Rouleau, Philippe M Campeau
VPS13 protein family members, VPS13A through VPS13C, have been associated with various recessive movement disorders. We describe the first disease association of rare recessive VPS13D variants including a frameshift, missense and a partial duplication with a novel complex, hyperkinetic neurological disorder. The clinical features include developmental delay, a childhood onset movement disorder (chorea, dystonia or tremor) and progressive spastic ataxia or paraparesis. Characteristic brain MRI shows basal ganglia or diffuse white matter T2 hyperintensities as seen in Leigh syndrome and chorea-acanthocytosis...
March 8, 2018: Annals of Neurology
Olivier Yavari-Sartakhti, Frédérique Briche, Daniel Jost, Nicolas Michaud, Michel Bignand, Jean-Pierre Tourtier
Deafness frequently observed in explosion victims, currently following terrorist attack, is a barrier to communication between victims and first responders. This may result in a delay in the initial triage and evacuation. In such situations, Paris Fire Brigade (Paris, France) proposes the use of assistance cards to help conscious, but deafened patients at the site of an attack where there may be numerous victims. Yavari-Sartakhti O , Briche F , Jost D , Michaud N , Bignand M , Tourtier JP . A new triage support tool in case of explosion...
March 8, 2018: Prehospital and Disaster Medicine
Brian W Coburn, Kaleb Michaud, Debra A Bergman, Ted R Mikuls
OBJECTIVES: Observational data suggests that hyperuricemia and gout are associated with increased mortality while allopurinol use is associated with reduced mortality. There may also be a dose-dependent protective effect. Our objective was to determine whether dose escalation is associated with cause-specific mortality. METHODS: In this 10-year observational, active-comparator study of U.S. Veterans with gout initiating allopurinol, we used propensity score matching with Cox proportional hazards and competing risks regression to assess cause-specific mortality differences between allopurinol dose escalators versus non-escalators...
March 7, 2018: Arthritis & Rheumatology
Anne Bourbonnais, Francine Ducharme, Philippe Landreville, Cécile Michaud, Marie-Andrée Gauthier, Marie-Hélène Lavallée
Few studies have been conducted on strategies to promote the implementation of complex interventions in nursing homes (NHs). This article presents a pilot study intended to assess the strategies that would enable the optimal implementation of a complex intervention approach in NHs based on the meanings of screams of older people living with Alzheimer's disease. An action research approach was used with 19 formal and family caregivers from five NHs. Focus groups and individual interviews were held to assess different implementation strategies...
March 1, 2018: Journal of Applied Gerontology: the Official Journal of the Southern Gerontological Society
Joanne Young, Yoran Margaron, Mathieu Fernandes, Eve Duchemin-Pelletier, Joris Michaud, Mélanie Flaender, Oana Lorintiu, Sébastien Degot, Pauline Poydenot
Despite the need for more effective drug treatments to address muscle atrophy and disease, physiologically accurate in vitro screening models and higher information content preclinical assays that aid in the discovery and development of novel therapies are lacking. To this end, MyoScreen was developed: a robust and versatile high-throughput high-content screening (HT/HCS) platform that integrates a physiologically and pharmacologically relevant micropatterned human primary skeletal muscle model with a panel of pertinent phenotypic and functional assays...
March 1, 2018: SLAS Discovery
Jung Eun Han, Nadia Boachie, Isabel Garcia Garcia, Andréanne Michaud, Alain Dagher
Self-control is known to influence food intake and body weight. Neuroimaging studies have used tasks that tap into different aspects of self-control. Here we conducted a coordinate-based meta-analysis on functional magnetic resonance imaging studies to identify brain regions associated with dietary self-control. Additionally, we tested the effect of task by comparing two widely used paradigms that require either (1) voluntary suppression of an appetitive response to cues, predominantly assessing inhibitory control or (2) food decision-making, where cognitive value modulation is targeted...
February 26, 2018: Physiology & Behavior
Karine Michaud, Marie de Tayrac, Myreille D'Astous, Claudie Paquet, Peter Vincent Gould, Stéphan Saikali
OBJECTIVE: To study the presence of 9p deletion and p16, cyclin D1 and Myc expression and their respective diagnostic and prognostic interest in oligodendrogliomas. METHODS: We analyzed a retrospective series of 40 consecutive anaplastic oligodendrogliomas (OIII) from a single institution and compared them to a control series of 10 low grade oligodendrogliomas (OII). Automated FISH analysis of chromosome 9p status and immunohistochemistry for p16, cyclin D1 and Myc was performed for all cases and correlated with clinical and histological data, event free survival (EFS) and overall survival (OS)...
2018: PloS One
Rémy Marcotte-Collard, Patrick Simard, Langis Michaud
PURPOSE: This study aims to analyze two commercial orthokeratology lens designs and compare their optical effects at the corneal level. METHODS: This is a retrospective study on subjects seeking an orthokeratology fitting for myopia management at the Université de Montréal clinic between January 2013 and August 2015. Group A included the first 64 subjects fitted with a 4-curve lens design (Paragon CRT; Paragon) who met the inclusion criteria, whereas group B included the same number of subjects fitted with a 5-curve lens design (Dreamlens; Polymer Technology, Rochester, NY)...
February 27, 2018: Eye & Contact Lens
C J Michaud, Brian Trethowan
When aortic dissections extend to the renal arteries, the reductions in renal blood flow can cause marked increases in renin production. The resultant rise in angiotensin II can lead to difficult-to-control blood pressure, despite normal post-dissection antihypertensive agents. Herein, we highlight a case of a post-dissection patient with malignant hypertension refractory to eight different enteral antihypertensives. Angiotensin converting enzyme (ACE) inhibitors and angiotensin receptor blockers had been held due to post-operative acute kidney injury...
February 28, 2018: Pharmacotherapy
Amy M Moore, Mary Clair-Michaud, Kathleen J Melanson, Alison Tovar
OBJECTIVES: We examined the feasibility and acceptability of a novel home-based intervention to improve the food parenting practices of low-income mothers with preschool-aged children. METHODS: Mother-child dyads (N = 15) were recruited from WIC in southern Rhode Island. A non-experimental, pretest-posttest design was used to assess changes in maternal food parenting practices. Dyads participated in 3 home-based sessions that included baseline measures and an evening meal video recording at session 1, a motivational interviewing (MI) intervention that included feedback on the evening meal video recording at session 2, and a satisfaction ques- tionnaire at session 3...
March 1, 2018: American Journal of Health Behavior
Jade Huguet, Fleur Gaudette, Véronique Michaud, Jacques Turgeon
The objective of our study was to develop and validate a cocktail approach to allow the simultaneous characterization of various CYP450-mediated oxydations by human heart microsomes for nine probe drug substrates namely. ethoxyresorufin. bupropion. repaglinide. tolbutamide. bufuralol. chlorzoxazone. ebastine. midazolam and dodecanoic acid. The first validation step was conducted using recombinant human CYP450 isoenzymes by comparing activity measured for each probe drug as a function of 1) buffer used. 2) selectivity towards specific isoenzymes...
February 16, 2018: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
Sophie Gravel, Jean-Louis Chiasson, Suzanne Dallaire, Jacques Turgeon, Veronique Michaud
INTRODUCTION: Diabetes affects more than 9% of the adult population worldwide. Patients with type 2 diabetes mellitus (T2DM) show variable responses to some drugs which may be due, in part, to variability in the functional activity of drug-metabolising enzymes including cytochromes P450 (CYP450s). CYP450 is a superfamily of enzymes responsible for xenobiotic metabolism. Knowledge must be gained on the impact of T2DM and related inflammatory processes on drug metabolism and its consequences on drug response...
February 8, 2018: BMJ Open
Sara Sabatasso, Jessica Vanhaebost, Francesco Doenz, Cristian Palmiere, Katarzyna Michaud, Fabrice Dedouit, Silke Grabherr
Recent studies have indicated that multiphase postmortem computed tomography angiography (MPMCTA) allows detection of a pathological enhancement of the myocardium in regions that correlate with the localization of the infarction at histology. The aim of this study was to verify this hypothesis by examining MPMCTA images in cases of myocardial infarction. Therefore, we investigated 10 autopsy cases where death was attributed to myocardial infarction or which showed cardiovascular pathology. As a control group, we selected 10 cases of non-natural (namely, not cardiac) death...
February 12, 2018: American Journal of Forensic Medicine and Pathology
Paola de Pablo, Dora Romaguera, Helena L Fisk, Philip C Calder, Anne-Marie Quirke, Alison J Cartwright, Salvatore Panico, Amalia Mattiello, Diana Gavrila, Carman Navarro, Carlotta Sacerdote, Paolo Vineis, Rosario Tumino, William E Ollier, Dominique S Michaud, Elio Riboli, Patrick J Venables, Benjamin A Fisher
OBJECTIVES: Findings relating to dietary intake of n-3 polyunsaturated fatty acids (PUFA) and risk of rheumatoid arthritis (RA) are mixed. Erythrocyte membrane PUFA is an accurate objective biomarker of PUFA status; however, there are little data on erythrocyte membrane PUFA and risk of RA. The objective was therefore to compare erythrocyte membrane PUFA between pre-RA individuals and matched controls from a population-based sample, and specifically to test the hypothesis that higher levels of longer chain n-3 PUFA are associated with lower risk of RA...
February 7, 2018: Annals of the Rheumatic Diseases
Andrea Accogli, Fadi F Hamdan, Chantal Poulin, Christina Nassif, Guy A Rouleau, Jacques L Michaud, Myriam Srour
Adaptor protein complex-4 (AP-4) is a heterotetrameric protein complex which plays a key role in vesicle trafficking in neurons. Mutations in genes affecting different subunits of AP-4, including AP4B1, AP4E1, AP4S1, and AP4M1, have been recently associated with an autosomal recessive phenotype, consisting of spastic tetraplegia, and intellectual disability (ID). The overlapping clinical picture among individuals carrying mutations in any of these genes has prompted the terms "AP-4 deficiency syndrome" for this clinically recognizable phenotype...
February 12, 2018: American Journal of Medical Genetics. Part A
Ted R Mikuls, Michael J Duryee, Bryant R England, Daniel R Anderson, Michelene Hearth-Holmes, Kaihong Su, Kaleb Michaud, Jeffrey B Payne, Harlan Sayles, Carlos Hunter, Jacob D McGowan, Lynell W Klassen, Geoffrey M Thiele
OBJECTIVE: To compare anti-malondialdehyde-acetaldehyde (MAA) antibody concentrations between rheumatoid arthritis (RA) patients and healthy and rheumatic disease controls. METHODS: Anti-MAA antibody (IgA, IgM, IgG) was measured using ELISA and banked serum from patients with RA (n = 284), osteoarthritis (OA, n = 330), spondyloarthropathy (SpA, n = 50), and systemic lupus erythematosus (SLE, n = 88) as well as healthy controls (n = 82). Anti-MAA antibody concentrations and the frequency of positivity were compared across groups...
February 1, 2018: International Immunopharmacology
Brian P Peppers, Jamie Zacharias, Chelsea R Michaud, John A Frith, Priya Varma, Mark Henning, Linda M Quinn, Haig Tcheurekdjian, Timothy Craig, Robert W Hostoffer
BACKGROUND: In patients with humoral immunodeficiency, the progression of bronchiectasis has been known to occur despite adequate gammaglobulin therapy and in the absence of recurrent infections. This observation suggests that factors other than gammaglobulin replacement might play a part in the prevention of lung damage in this population. α1-Antitrypsin deficiency can be associated with bronchiectasis, a chronic inflammatory lung disease. The protective levels of α1-antitrypsin and phenotype in preventing bronchiectasis have not been thoroughly studied in the immunodeficient population...
February 2018: Annals of Allergy, Asthma & Immunology
Alexandra Chapuis, Jonathan Thevenot, Frédéric Coutant, Khaled Messaoudi, Elodie Michaud, Bruno Pereira, Emmanuelle Rochette, Nelly Gourdon-Dubois, Etienne Merlin, Jean-Luc Fauquert, Bertrand Evrard, Paul Rouzaire
No abstract text is available yet for this article.
February 2, 2018: Journal of Allergy and Clinical Immunology in Practice
Jonathan Catry, Minh Luong-Nguyen, Lousineh Arakelian, Tigran Poghosyan, Patrick Bruneval, Thomas Domet, Laurent Michaud, Rony Sfeir, Frederic Gottrand, Jerome Larghero, Valerie Vanneaux, Pierre Cattan
Tissue engineering appears promising as an alternative technique for esophageal replacement. Mesenchymal stem cells (MSCs) could be of interest for esophageal regeneration. Evaluation of the ability of an acellular matrix seeded with autologous MSCs to promote tissue remodeling toward an esophageal phenotype after circumferential replacement of the esophagus in a mini pig model. A 3 cm long circumferential replacement of the abdominal esophagus was performed with an MSC-seeded matrix (MSC group, n = 10) versus a matrix alone (control group, n = 10), which has previously been matured into the great omentum...
December 2017: Cell Transplantation
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