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https://www.readbyqxmd.com/read/29045277/determinants-of-improvement-in-cardiopulmonary-exercise-testing-after-left-ventricular-assist-device-implantation
#1
Andrew N Rosenbaum, Shannon M Dunlay, Naveen L Pereira, Thomas G Allison, Simon Maltais, John M Stulak, Lyle D Joyce, Sudhir S Kushwaha
Although improvement in cardiac output and hemodynamic parameters is routinely demonstrated in patients implanted with continuous-flow left ventricular assist devices (CF-LVADs), improvement in exercise capacity is inconsistently seen. Our purpose was to determine whether native cardiac factors, LVAD factors, or comorbid factors were associated with lack of improvement. Review of all patients undergoing preimplant cardiopulmonary exercise testing (CPET) and CPET on LVAD therapy at one institution was performed between 2007 and 2014 (n = 49)...
October 18, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28986039/reoperation-rate-for-recurrent-mitral-disease-is-low-after-robotically-assisted-mitral-valve-repair
#2
Amit Taggarse, Joseph A Dearani, Richard C Daly, Lucman A Anwer, Wooseok Choi, Hector I Michelena, William J Mauermann, Simon Maltais
No abstract text is available yet for this article.
September 14, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28978543/differential-impact-of-the-cheese-matrix-on-the-postprandial-lipid-response-a-randomized-crossover-controlled-trial
#3
Jean-Philippe Drouin-Chartier, André J Tremblay, Julie Maltais-Giguère, Amélie Charest, Léa Guinot, Laurie-Eve Rioux, Steve Labrie, Michel Britten, Benoît Lamarche, Sylvie L Turgeon, Patrick Couture
Background: In a simulated gastrointestinal environment, the cheese matrix modulates dairy fat digestion. However, to our knowledge, the impact of the cheese matrix on postprandial lipemia in humans has not yet been evaluated.Objective: In healthy subjects, we compared the impact of dairy fat provided from firm cheese, soft cream cheese, and butter on the postprandial response at 4 h and on the incremental area under the curve (iAUC) of plasma triglycerides.Design: Forty-three healthy subjects were recruited to this randomized, crossover, controlled trial...
October 4, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28967621/successful-minimally-invasive-mitral-valve-replacement-using-normothermic-fibrillatory-arrest-in-a-patient-with-cold-urticaria
#4
James A Nelson, Simon Maltais, Jonathan J Fox, John B Hagan, Kari L Rossow, William J Mauermann
No abstract text is available yet for this article.
May 3, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28906273/utilization-and-outcomes-of-temporary-mechanical-circulatory-support-for-graft-dysfunction-after-heart-transplantation
#5
Kevin Phan, Jessica G Y Luc, Joshua Xu, Simon Maltais, John M Stulak, Tristan D Yan, Vakhtang Tchantchaleishvili
Graft dysfunction is the main cause of early mortality after heart transplantation. In cases of severe graft dysfunction, temporary mechanical circulatory support (TMCS) may be necessary. The aim of this systematic review was to examine the utilization and outcomes of TMCS in patients with graft dysfunction after heart transplantation. Electronic search was performed to identify all studies in the English literature assessing the use of TMCS for graft dysfunction. All identified articles were systematically assessed for inclusion and exclusion criteria...
September 12, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28888521/impact-of-center-left-ventricular-assist%C3%A2-device-volume-on-outcomes%C3%A2-after%C3%A2-implantation-an-intermacs-analysis
#6
Jennifer A Cowger, John M Stulak, Palak Shah, Todd F Dardas, Francis D Pagani, Shannon M Dunlay, Simon Maltais, Keith D Aaronson, Ramesh Singh, Nahush A Mokadam, James K Kirklin, Christopher T Salerno
OBJECTIVES: This study examined patient outcomes after left ventricular assist device (LVAD) implantation across a range of center surgical volumes. BACKGROUND: In order for a center to qualify for reimbursement, Centers for Medicare and Medicaid Services (CMS) requires it to implant ≥10 LVADs or total artificial hearts over a 3-year period. The impact of center LVAD surgical volumes on patient outcomes has not been thoroughly scrutinized. METHODS: Center volumes were provided for 7,416 patients undergoing LVAD implantation who were enrolled in INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support)...
October 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28858570/gold-2017-classification-and-lung-function-decline-in-chronic-obstructive-pulmonary-disease
#7
Wan C Tan, Jean Bourbeau, Shawn D Aaron, Guohai Zhou, Francois Maltais, Paul Hernandez, J Mark Fitzgerald, Darcy D Marciniuk, Brandie L Walker, Don D Sin
No abstract text is available yet for this article.
August 31, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28815583/educational-and-rehabilitation-service-utilization-in-adolescents-born-preterm-or-with-a-congenital-heart-defect-and-at-high-risk-for-disability
#8
Annette Majnemer, Noemi Dahan-Oliel, Charles Rohlicek, Sean Hatzigeorgiou, Barbara Mazer, Desiree B Maltais, Norbert Schmitz
AIM: This historical cohort study describes the use of educational and rehabilitation services in adolescents born preterm or with a congenital heart defect (CHD). METHOD: Parents of 76 young people (mean age 15y 8mo [SD 1y 8mo]) with CHD and 125 born ≤29 weeks gestational age (mean age 16y [SD 2y 5mo]) completed a demographics questionnaire including educational and rehabilitation resource utilization within the previous 6 months. Rehabilitation services included occupational therapy, physical therapy, speech language pathology, psychology...
October 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28800957/insight-into-the-mode-of-action-and-selectivity-of-pbrm-a-covalent-steroidal-inhibitor-of-17%C3%AE-hydroxysteroid-dehydrogenase-type-1
#9
Alexandre Trottier, René Maltais, Diana Ayan, Xavier Barbeau, Jenny Roy, Martin Perreault, Richard Poulin, Patrick Lagüe, Donald Poirier
17β-Hydroxysteroid dehydrogenase type 1 (17β-HSD1) is involved in the biosynthesis of estradiol, the major bioactive endogenous estrogen in mammals, and constitutes an interesting therapeutic target for estrogen-dependent diseases. A steroidal derivative, 3-{[(16β,17β)-3-(2-bromoethyl)-17-hydroxyestra-1,3,5(10)-trien-16-yl]methyl} benzamide (PBRM), has recently been described as a non-estrogenic, irreversible inhibitor of 17β-HSD1. However, the mode of action of this inhibitor and its selectivity profile have not yet been elucidated...
November 15, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28774199/physical-activity-patterns-and-clusters-in-1001-patients-with-copd
#10
Rafael Mesquita, Gabriele Spina, Fabio Pitta, David Donaire-Gonzalez, Brenda M Deering, Mehul S Patel, Katy E Mitchell, Jennifer Alison, Arnoldus Jr van Gestel, Stefanie Zogg, Philippe Gagnon, Beatriz Abascal-Bolado, Barbara Vagaggini, Judith Garcia-Aymerich, Sue C Jenkins, Elisabeth Apm Romme, Samantha Sc Kon, Paul S Albert, Benjamin Waschki, Dinesh Shrikrishna, Sally J Singh, Nicholas S Hopkinson, David Miedinger, Roberto P Benzo, François Maltais, Pierluigi Paggiaro, Zoe J McKeough, Michael I Polkey, Kylie Hill, William D-C Man, Christian F Clarenbach, Nidia A Hernandes, Daniela Savi, Sally Wootton, Karina C Furlanetto, Li W Cindy Ng, Anouk W Vaes, Christine Jenkins, Peter R Eastwood, Diana Jarreta, Anne Kirsten, Dina Brooks, David R Hillman, Thaís Sant'Anna, Kenneth Meijer, Selina Dürr, Erica Pa Rutten, Malcolm Kohler, Vanessa S Probst, Ruth Tal-Singer, Esther Garcia Gil, Albertus C den Brinker, Jörg D Leuppi, Peter Ma Calverley, Frank Wjm Smeenk, Richard W Costello, Marco Gramm, Roger Goldstein, Miriam Tj Groenen, Helgo Magnussen, Emiel Fm Wouters, Richard L ZuWallack, Oliver Amft, Henrik Watz, Martijn A Spruit
We described physical activity measures and hourly patterns in patients with chronic obstructive pulmonary disease (COPD) after stratification for generic and COPD-specific characteristics and, based on multiple physical activity measures, we identified clusters of patients. In total, 1001 patients with COPD (65% men; age, 67 years; forced expiratory volume in the first second [FEV1], 49% predicted) were studied cross-sectionally. Demographics, anthropometrics, lung function and clinical data were assessed...
August 2017: Chronic Respiratory Disease
https://www.readbyqxmd.com/read/28757150/temporal-differences-in-outcomes-during-long-term-mechanical-circulatory-support
#11
Simon Maltais, Lucman A Anwer, Nicholas A Haglund, Jennifer Cowger, Palak Shah, Keith D Aaronson, Francis D Pagani, Shannon M Dunlay, Ramesh Singh, Christopher T Salerno, John M Stulak
BACKGROUND: Device indications have changed for placement of continuous-flow left ventricular assist devices (CF-LVADs). We performed a multicenter analysis evaluating temporal variations in outcomes after CF-LVAD implantation. METHODS & RESULTS: We retrospectively defined three time intervals to reflect changes in CF-LVAD technology (Period 1: 2004 to 2009; Period 2: 2010 to 2012; and Period 3: 2012 to 2014). A total of 1,064 patients (HeartMate II (HMII)=835, HeartWare (HVAD)=229) underwent CF-LVAD implantation between May 2004 and October 2014...
July 27, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28703038/rehabilitation-interventions-to-modify-endocrine-metabolic-disease-risk-in-individuals-with-chronic-spinal-cord-injury-living-in-the-community-riisc-a-systematic-review-and-scoping-perspective
#12
Jenna C Gibbs, Dany H Gagnon, Austin J Bergquist, Jasmine Arel, Tomas Cervinka, Rasha El-Kotob, Désirée B Maltais, Dalton L Wolfe, B Catharine Craven
Context Endocrine-metabolic disease (EMD) risk following spinal cord injury (SCI) is associated with significant multi-morbidity (i.e. fracture, diabetes, heart disease), mortality, and economic burden. It is unclear to what extent rehabilitation interventions can modify EMD risk and improve health status in community-dwelling adults with chronic SCI. Objectives To characterize rehabilitation interventions and summarize evidence on their efficacy/effectiveness to modify precursors to EMD risk in community-dwelling adults with chronic SCI...
July 13, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28475561/adverse-event-rates-change-favorably-over-time-for-patients-bridged-with-the-heartware-left-ventricular-assist-device
#13
Simon Maltais, Keith D Aaronson, Jeffrey J Teuteberg, Mark S Slaughter, Samer S Najjar, Valluvan Jeevanandam, Duc T Pham, Ed McGee, Katrin Leadley, Robert L Kormos
The HeartWare Ventricular Assist System (HVAD) provides significant improvements in survival and quality of life, and here, we seek to evaluate temporal differences in the adverse event (AE) rates. Patients (n = 382) in the ADVANCE bridge-to-transplant and continued access protocol trial were assessed for bleeding, cardiac arrhythmia, infection, ischemic and hemorrhagic stroke, and right heart failure during predetermined time periods (≤30, >30-180, >180-365, >365-730, >730-1,095 days) after HVAD implant...
May 4, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28473439/implication-of-inflammation-and-epigenetic-readers-in-coronary-artery-remodeling-in-patients-with-pulmonary-arterial-hypertension
#14
Jolyane Meloche, Marie-Claude Lampron, Valérie Nadeau, Mélanie Maltais, François Potus, Caroline Lambert, Eve Tremblay, Géraldine Vitry, Sandra Breuils-Bonnet, Olivier Boucherat, Eric Charbonneau, Steeve Provencher, Roxane Paulin, Sébastien Bonnet
OBJECTIVE: Pulmonary arterial hypertension (PAH) is a vascular disease not restricted to the lungs. Many signaling pathways described in PAH are also of importance in other vascular remodeling diseases, such as coronary artery disease (CAD). Intriguingly, CAD is 4× more prevalent in PAH compared with the global population, suggesting a link between these 2 diseases. Both PAH and CAD are associated with sustained inflammation and smooth muscle cell proliferation/apoptosis imbalance and we demonstrated in PAH that this phenotype is, in part, because of the miR-223/DNA damage/Poly[ADP-ribose] polymerase 1/miR-204 axis activation and subsequent bromodomain protein 4 (BRD4) overexpression...
August 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28455192/associations-between-resilience-community-belonging-and-social-participation-among-community-dwelling-older-adults-results-from-the-eastern-townships-population-health-survey
#15
Mélanie Levasseur, Mathieu Roy, Bernard Michallet, France St-Hilaire, Danielle Maltais, Mélissa Généreux
OBJECTIVE: To examine the associations between resilience, community belonging, and social participation, and the moderating effect of resilience on the association between community belonging and social participation among community-dwelling older adults. DESIGN: Cross-sectional; secondary analyses of the Eastern Townships Population Health Survey. SETTING: Community. PARTICIPANTS: A sample (N=4541) of women (n=2485) and men (n=2056) aged ≥60 years was randomly selected according to area...
April 26, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28424359/effects-of-combined-tiotropium-olodaterol-on-inspiratory-capacity-and-exercise-endurance-in-copd
#16
Denis E O'Donnell, Richard Casaburi, Peter Frith, Anne Kirsten, Dorothy De Sousa, Alan Hamilton, Wenqiong Xue, François Maltais
Two replicate, double-blind, 6-week, incomplete-crossover studies (MORACTO 1 and 2) assessed the effects of tiotropium/olodaterol on inspiratory capacity and exercise endurance time in patients with moderate to severe chronic obstructive pulmonary disease.For each patient, four of five treatments were administered once daily for 6 weeks, with a 21-day washout between treatments: tiotropium/olodaterol 2.5/5 µg or 5/5 µg, tiotropium 5 µg, olodaterol 5 µg or placebo, all via the Respimat inhaler...
April 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28365175/outcomes-following-implantation-of-mechanical-circulatory-support-in-adults-with-congenital-heart-disease-an-analysis-of-the-interagency-registry-for-mechanically-assisted-circulatory-support-intermacs
#17
Christina J VanderPluym, Ari Cedars, Pirooz Eghtesady, Bryan G Maxwell, Jill M Gelow, Luke J Burchill, Simon Maltais, Devin A Koehl, Ryan S Cantor, Elizabeth D Blume
BACKGROUND: Adults with congenital heart disease represent an expanding and unique population of patients with heart failure (HF) in whom the use of mechanical circulatory support (MCS) has not been characterized. We sought to describe overall use, patient characteristics, and outcomes of MCS in adult congenital heart disease (ACHD). METHODS: All patients entered into the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) between June 23, 2006, and December 31, 2015, were included...
March 7, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28350847/biophysical-characterization-of-the-b-hlh-lz-of-%C3%AE-max-an-alternatively-spliced-isoform-of-max-found-in-tumor-cells-towards-the-validation-of-a-tumor-suppressor-role-for-the-max-homodimers
#18
Loïka Maltais, Martin Montagne, Mikaël Bédard, Cynthia Tremblay, Laura Soucek, Pierre Lavigne
It is classically recognized that the physiological and oncogenic functions of Myc proteins depend on specific DNA binding enabled by the dimerization of its C-terminal basic-region-Helix-Loop-Helix-Leucine Zipper (b-HLH-LZ) domain with that of Max. However, a new paradigm is emerging, where the binding of the c-Myc/Max heterodimer to non-specific sequences in enhancers and promoters drives the transcription of genes involved in diverse oncogenic programs. Importantly, Max can form a stable homodimer even in the presence of c-Myc and bind DNA (specific and non-specific) with comparable affinity to the c-Myc/Max heterodimer...
2017: PloS One
https://www.readbyqxmd.com/read/28340867/comparative-prevalence-of-co-morbidities-in-smoking-and-non-smoking-asthma-patients-with-incomplete-reversibility-of-airway-obstruction-non-smoking-asthma-patients-with-complete-reversibility-of-airway-obstruction-and-copd-patients
#19
Myriam Nadeau, Marie-Ève Boulay, Joanne Milot, Johane Lepage, Lara Bilodeau, François Maltais, Louis-Philippe Boulet
BACKGROUND: Asthma with incomplete reversibility of airway obstruction (IRAO) may often be associated to smoking-induced changes. Nevertheless, a high proportion of patients showing IRAO have never smoked. These patients with IRAO often share features of patients with chronic obstructive pulmonary disease (COPD). Although IRAO is still a poorly defined condition, it has been associated with a higher morbidity and mortality than asthma with complete reversibility of airway obstruction (CRAO) or even COPD alone...
April 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28254377/impact-of-androstane-a-and-d-ring-inversion-on-17%C3%AE-hydroxysteroid-dehydrogenase-type-3-inhibitory-activity-androgenic-effect-and-metabolic-stability
#20
Francisco Cortés-Benítez, Jenny Roy, René Maltais, Donald Poirier
17β-Hydroxysteroid dehydrogenase type 3 (17β-HSD3) is a major player in human endocrinology, being one of the most important enzymes involved in testosterone production. To capitalize on the discovery of RM-532-105, a steroidal 17β-HSD3 inhibitor, we explored the effect of its backbone configuration on inhibitory activity, androgenic profile, and metabolic stability. Two modifications that greatly alter the natural shape of steroids, i.e. inversion of the methyl on carbon 13 (13α-CH3 instead of 13β-CH3) and inversion of the hydrogen on carbon 5 (5β-H instead of 5α-H), were tested after the syntheses in 6 steps of 2 isomeric forms (5α/13α-RM-532-105 (6a) and 5β/13β-RM-532-105 (6b), respectively) of the 17β-HSD3 inhibitor RM-532-105 (5α/13β-configurations)...
April 1, 2017: Bioorganic & Medicinal Chemistry
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