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Parents’ Report Of Canadian Elementary School Children’S Physical Activity And Screen Time During The Covid-19 Pandemic: A Longitudinal Study, Emma Ostermeier, Patricia Tucker, Andrew Clark, Jamie A. Seabrook, Jason Gilliland Dec 2021

Parents’ Report Of Canadian Elementary School Children’S Physical Activity And Screen Time During The Covid-19 Pandemic: A Longitudinal Study, Emma Ostermeier, Patricia Tucker, Andrew Clark, Jamie A. Seabrook, Jason Gilliland

Paediatrics Publications

COVID-19 public health protocols have altered children’s daily routines, limiting their physical activity opportunities. The purpose of this study was to examine how the COVID-19 pandemic affected children’s (ages 10–12 years) physical activity and screen time, and to explore the impact of gender, socioeconomic status (SES), and public health constraints (i.e., facility use and social interaction) on the changes in children’s health behaviors. Online surveys were disseminated to parents at two time points: before COVID-19 (May 2019 to February 2020) and during COVID-19 (November to December 2020). Wilcoxon signed-rank tests were used to assess changes in physical activity and screen …


Choosing Wisely Canada – Pediatric Otolaryngology Recommendations, Mitchell Mcdonough, Kalpesh Hathi, Gerard Corsten, Christopher J. Chin, Paolo Campisi, Jonathan Cavanagh, Neil Chadha, M. Elise Graham, Murad Husein, Liane B. Johnson, Jodi Jones, Bruce Korman, John Manoukian, Lily H.P. Nguyen, Doron D. Sommer, Julie Strychowsky, Trina Uwiera, Warren Yunker, Paul Hong Dec 2021

Choosing Wisely Canada – Pediatric Otolaryngology Recommendations, Mitchell Mcdonough, Kalpesh Hathi, Gerard Corsten, Christopher J. Chin, Paolo Campisi, Jonathan Cavanagh, Neil Chadha, M. Elise Graham, Murad Husein, Liane B. Johnson, Jodi Jones, Bruce Korman, John Manoukian, Lily H.P. Nguyen, Doron D. Sommer, Julie Strychowsky, Trina Uwiera, Warren Yunker, Paul Hong

Paediatrics Publications

The Choosing Wisely Canada campaign raises awareness amongst physicians and patients regarding unnecessary or inappropriate tests and treatments. Using an online survey, members of the Pediatric Otolaryngology Subspecialty Group within the Canadian Society of Otolaryngology – Head & Neck Surgery developed a list of nine evidence based recommendations to help physicians and patients make treatment decisions regarding common pediatric otolaryngology presentations: (1) Don’t routinely order a plain film x-ray in the evaluation of nasal fractures; (2) Don’t order imaging to distinguish acute bacterial sinusitis from an upper respiratory infection; (3) Don’t place tympanostomy tubes in most children for a single …


Placental Infarction And Intrauterine Growth Restriction Following Sars-Cov-2 Infection, Stephanie Moltner, Barbra De Vrijer, Harrison Banner Dec 2021

Placental Infarction And Intrauterine Growth Restriction Following Sars-Cov-2 Infection, Stephanie Moltner, Barbra De Vrijer, Harrison Banner

Paediatrics Publications

No abstract provided.


The Intranasal Dexmedetomidine Plus Ketamine For Procedural Sedation In Children, Adaptive Randomized Controlled Non-Inferiority Multicenter Trial (Ketodex): A Statistical Analysis Plan, Anna Heath, Juan David Rios, Eleanor Pullenayegum, Petros Pechlivanoglou, Martin Offringa, Maryna Yaskina, Rick Watts, Shana Rimmer, Terry P. Klassen, Kamary Coriolano, Naveen Poonai, Darcy Beer, Scott Sawyer, Maala Bhatt, April Kam, Quynh Doan, Vikram Sabhaney, Serena Hickes, Samina Ali, Karly Stillwell, Tannis Erickson, Chelsea Bowkett, Chelsea Bowkett, Carolyn Shimmin, Brendon Foot, Candace Mcgahern, Redjana Carciurmaruj, Jeannine Schellenberg Dec 2021

The Intranasal Dexmedetomidine Plus Ketamine For Procedural Sedation In Children, Adaptive Randomized Controlled Non-Inferiority Multicenter Trial (Ketodex): A Statistical Analysis Plan, Anna Heath, Juan David Rios, Eleanor Pullenayegum, Petros Pechlivanoglou, Martin Offringa, Maryna Yaskina, Rick Watts, Shana Rimmer, Terry P. Klassen, Kamary Coriolano, Naveen Poonai, Darcy Beer, Scott Sawyer, Maala Bhatt, April Kam, Quynh Doan, Vikram Sabhaney, Serena Hickes, Samina Ali, Karly Stillwell, Tannis Erickson, Chelsea Bowkett, Chelsea Bowkett, Carolyn Shimmin, Brendon Foot, Candace Mcgahern, Redjana Carciurmaruj, Jeannine Schellenberg

Paediatrics Publications

Background: Procedural sedation and analgesia (PSA) is frequently required to perform closed reductions for fractures and dislocations in children. Intravenous (IV) ketamine is the most commonly used sedative agent for closed reductions. However, as children find IV insertion a distressing and painful procedure, there is need to identify a feasible alternative route of administration. There is evidence that a combination of dexmedetomidine and ketamine (ketodex), administered intranasally (IN), could provide adequate sedation for closed reductions while avoiding the need for IV insertion. However, there is uncertainty about the optimal combination dose for the two agents and whether it can provide …


Health Concerns Of Adolescents And Adults With Spina Bifida, Jessica Starowicz, Caitlin Cassidy, Laura Brunton Nov 2021

Health Concerns Of Adolescents And Adults With Spina Bifida, Jessica Starowicz, Caitlin Cassidy, Laura Brunton

Paediatrics Publications

Due to advancements in medical care, people with spina bifida (SB) are surviving well into adulthood, resulting in a growing number of patients transitioning to an adult sector unequipped to care for people with chronic rehabilitative and medical needs. The Transitional and Lifelong Care (TLC) program is a multidisciplinary clinical service that compensates for this gap, providing comprehensive, coordinated care to adolescents, and adults with SB. As a relatively new clinical service, objective data about the patients using the service and their needs is scant. This study sought to identify the most common health concerns among TLC patients with SB …


Β2 Integrin Cd11d/Cd18: From Expression To An Emerging Role In Staged Leukocyte Migration, Eoin N. Blythe, Lynne C. Weaver, Arthur Brown, Gregory A. Dekaban Nov 2021

Β2 Integrin Cd11d/Cd18: From Expression To An Emerging Role In Staged Leukocyte Migration, Eoin N. Blythe, Lynne C. Weaver, Arthur Brown, Gregory A. Dekaban

Paediatrics Publications

CD11d/CD18 is the most recently discovered and least understood β2 integrin. Known CD11d adhesive mechanisms contribute to both extravasation and mesenchymal migration – two key aspects for localizing peripheral leukocytes to sites of inflammation. Differential expression of CD11d induces differences in monocyte/macrophage mesenchymal migration including impacts on macrophage sub-set migration. The participation of CD11d/CD18 in leukocyte localization during atherosclerosis and following neurotrauma has sparked interest in the development of CD11d-targeted therapeutic agents. Whereas the adhesive properties of CD11d have undergone investigation, the signalling pathways induced by ligand binding remain largely undefined. Underlining each adhesive and signalling function, CD11d is under …


In Vivo Magnetic Resonance Spectroscopy Of Hyperpolarized [1-, Lauren M Smith, Conrad B Pitts, Lanette J Friesen-Waldner, Neetin H Prabhu, Katherine E Mathers, Kevin J Sinclair, Trevor P Wade, Timothy Regnault, Charles A Mckenzie Nov 2021

In Vivo Magnetic Resonance Spectroscopy Of Hyperpolarized [1-, Lauren M Smith, Conrad B Pitts, Lanette J Friesen-Waldner, Neetin H Prabhu, Katherine E Mathers, Kevin J Sinclair, Trevor P Wade, Timothy Regnault, Charles A Mckenzie

Paediatrics Publications

BACKGROUND: Alterations in glycolysis are central to the increasing incidence of non-alcoholic fatty liver disease (NAFLD), highlighting a need for in vivo, non-invasive technologies to understand the development of hepatic metabolic aberrations.

PURPOSE: To use hyperpolarized magnetic resonance spectroscopy (MRS) and proton density fat fraction (PDFF) magnetic resonance imaging (MRI) techniques to investigate the effects of a chronic, life-long exposure to the Western diet (WD) in an animal model resulting in NAFLD; to investigate the hypothesis that exposure to the WD will result in NAFLD in association with altered pyruvate metabolism.

STUDY TYPE: Prospective.

ANIMAL MODEL: Twenty-eight male guinea pigs …


Paediatric Serum Sickness-Like Reaction: A 10-Year Retrospective Cohort Study, Blanca R. Del Pozzo-Magaña, Awatif Abuzgaia, Barbara Murray, Michael J. Rieder, Alejandro Lazo-Langner Nov 2021

Paediatric Serum Sickness-Like Reaction: A 10-Year Retrospective Cohort Study, Blanca R. Del Pozzo-Magaña, Awatif Abuzgaia, Barbara Murray, Michael J. Rieder, Alejandro Lazo-Langner

Paediatrics Publications

Background: Serum sickness-like reaction (SSLR) is an acute inflammatory condition affecting predominantly children. The pathophysiology remains unclear, but drugs are considered the main trigger. Objective: The aim of this study was to describe the clinical and laboratory features, triggers, and treatment modalities in children diagnosed with SSLR. Methods: We conducted a 10-year retrospective cohort study including all paediatric patients (0 to 18 years old) with query SSLR referred to the Adverse Drug Reactions Clinic at the Children's Hospital of Western Ontario. Diagnostic criteria included acute skin rash plus joint inflammation with or without fever. Results: We included 83 patients (47 …


Proteinase 3 Contributes To Endothelial Dysfunction In An Experimental Model Of Sepsis, Eric K. Patterson, Carolina Gillio-Meina, Claudio M. Martin, Douglas D. Fraser, Logan R. Van Nynatten, Marat Slessarev, Gediminas Cepinskas Nov 2021

Proteinase 3 Contributes To Endothelial Dysfunction In An Experimental Model Of Sepsis, Eric K. Patterson, Carolina Gillio-Meina, Claudio M. Martin, Douglas D. Fraser, Logan R. Van Nynatten, Marat Slessarev, Gediminas Cepinskas

Paediatrics Publications

In sepsis-induced inflammation, polymorphonuclear neutrophils (PMNs) contribute to vascular dysfunction. The serine proteases proteinase 3 (PR3) and human leukocyte elastase (HLE) are abundant in PMNs and are released upon degranulation. While HLE’s role in inflammation-induced endothelial dysfunction is well studied, PR3’s role is largely uninvestigated. We hypothesized that PR3, similarly to HLE, contributes to vascular barrier dysfunction in sepsis. Plasma PR3 and HLE concentrations and their leukocyte mRNA levels were measured by ELISA and qPCR, respectively, in sepsis patients and controls. Exogenous PR3 or HLE was applied to human umbilical vein endothelial cells (HUVECs) and HUVEC dysfunction was assessed by …


The Mental Well-Being And Coping Strategies Of Canadian Adolescents During The Covid-19 Pandemic: A Qualitative, Cross-Sectional Study, Kendra Nelson Ferguson, Stephanie E. Coen, Danielle Tobin, Gina Martin, Jamie A. Seabrook, Jason A. Gilliland Oct 2021

The Mental Well-Being And Coping Strategies Of Canadian Adolescents During The Covid-19 Pandemic: A Qualitative, Cross-Sectional Study, Kendra Nelson Ferguson, Stephanie E. Coen, Danielle Tobin, Gina Martin, Jamie A. Seabrook, Jason A. Gilliland

Paediatrics Publications

BACKGROUND: Qualitative research is lacking on the mental well-being of adolescents during the COVID-19 pandemic. The aim of this study was to explore the feelings and emotions adolescents experienced during the first wave of the COVID-19 pandemic and the coping strategies they identified and employed to manage those emotions. METHODS: Participants living in Canada aged 13-19 years were recruited through social media platforms and youth-serving organizations. Qualitative data were gathered from 2 open-ended questions included in a youth-informed cross-sectional online survey: "What feelings and emotions have you experienced around the pandemic?" and "What coping strategies have you used during the …


Rates And Determinants Of Mother's Own Milk Feeding In Infants Born Very Preterm, Dinesh Dharel, Nalini Singhal, Christel Wood, Zenon Cieslak, Fabiana Bacchini, Prakesh S. Shah, Xiang Y. Ye, Belal Alshaikh Sep 2021

Rates And Determinants Of Mother's Own Milk Feeding In Infants Born Very Preterm, Dinesh Dharel, Nalini Singhal, Christel Wood, Zenon Cieslak, Fabiana Bacchini, Prakesh S. Shah, Xiang Y. Ye, Belal Alshaikh

Paediatrics Publications

Objectives: To examine rates and determinants of mother's own milk (MOM) feeding at hospital discharge in a cohort of infants born very preterm within the Canadian Neonatal Network (CNN). Study design: This was a population-based cohort study of infants born at (NICUs) participating in the CNN between January 1, 2015, and December 31, 2018. We examined the rates and determinants of MOM use at discharge home among the participating NICUs. We used multivariable logistic regression analysis to identify independent determinants of MOM feeding. Results: Among the 6404 infants born very preterm and discharged home during the study period, 4457 (70%) …


The Good Food For Learning Universal Curriculum-Integrated Healthy School Lunch Intervention: Protocol For A Two-Year Matched Control Pre-Post And Case Study, Rachel Engler-Stringer, Jennifer Black, Nazeem Muhajarine, Wanda Martin, Jason Gilliland, Janet Mcvittie, Sara Kirk, Hannah Wittman, Amin Mousavi, Sinikka Elliott, Brent Hills, Gordon Androsoff, Debbie Field, Brit Macdonald, Chelsea Belt, Hassan Vatanparast Sep 2021

The Good Food For Learning Universal Curriculum-Integrated Healthy School Lunch Intervention: Protocol For A Two-Year Matched Control Pre-Post And Case Study, Rachel Engler-Stringer, Jennifer Black, Nazeem Muhajarine, Wanda Martin, Jason Gilliland, Janet Mcvittie, Sara Kirk, Hannah Wittman, Amin Mousavi, Sinikka Elliott, Brent Hills, Gordon Androsoff, Debbie Field, Brit Macdonald, Chelsea Belt, Hassan Vatanparast

Paediatrics Publications

Background: Good nutrition affects children's health, well-being, and learning, and schools offer an important setting to promote healthy behaviors that can last a lifetime. Once children reach school age, they spend more of their waking hours in school than in any other environment. Children's eating habits may be easier to influence than those of adults. In Canada, households with children are more likely to experience food insecurity, and school food programs that are universally available to all children can support the development of healthy eating patterns across groups of varying socioeconomic status. There is a significant gap in the rigorous …


Group A Streptococcal Septic Hip Arthritis In A Child With Spastic Triplegic Cerebral Palsy, Supriya Singh, Jacob Davidson, Timothy Carey, Michelle Barton Forbes, Megan Cashin Aug 2021

Group A Streptococcal Septic Hip Arthritis In A Child With Spastic Triplegic Cerebral Palsy, Supriya Singh, Jacob Davidson, Timothy Carey, Michelle Barton Forbes, Megan Cashin

Paediatrics Publications

Reports of septic hip arthritis in children with cerebral palsy are exceedingly rare. This case report describes a 10-year-old boy with spastic triplegic cerebral palsy (Gross Motor Functional Classification System), who presented with fever and irritability. This case highlights the difficulties in diagnosing septic joint arthritis in patients with cerebral palsy who are nonverbal and have limited mobility. A high index of suspicion is necessary in this population when presented with fever and new limitations in mobility.


Translating Developmental Origins Of Health And Disease In Practice: Health Care Providers' Perspectives., Monica L Molinaro, Marilyn Evans, Timothy Regnault, Barbra De Vrijer Jun 2021

Translating Developmental Origins Of Health And Disease In Practice: Health Care Providers' Perspectives., Monica L Molinaro, Marilyn Evans, Timothy Regnault, Barbra De Vrijer

Paediatrics Publications

Currently, there is limited knowledge on how health care providers perceive and understand the Developmental Origins of Health and Disease (DOHaD), which may impact how they inform patients and their families throughout the perinatal period. This qualitative descriptive study explored if and how health care providers counsel on in utero programming and future health outcomes with parents, both preconception and during pregnancy. One-on-one, semi-structured interviews were conducted with 23 health care providers from varying health disciplines including obstetrics and gynaecology, midwifery, paediatrics, endocrinology and internal medicine. Audiotaped interviews were transcribed verbatim and analysed using inductive thematic analysis. Three themes were …


Examining The Correlates Of Adolescent Food And Nutrition Knowledge, Rachel Brown, Jamie A. Seabrook, Saverio Stranges, Andrew F. Clark, Jess Haines, Colleen O’Connor, Sean Doherty, Jason A. Gilliland Jun 2021

Examining The Correlates Of Adolescent Food And Nutrition Knowledge, Rachel Brown, Jamie A. Seabrook, Saverio Stranges, Andrew F. Clark, Jess Haines, Colleen O’Connor, Sean Doherty, Jason A. Gilliland

Paediatrics Publications

Food literacy is a set of skills and knowledge that are integral to diet. It is common among teenagers to not have basic food literacy skills needed to consume a healthy diet. This study examined: (1) the current state of food and nutrition knowledge among adolescents 13–19 years of age in the census metropolitan area of London, ON, Canada; and (2) correlates of food knowledge and nutrition knowledge among adolescents. Data for this study were drawn from baseline youth and parent survey data collected from a larger population health intervention study. Statistical analysis of the survey data indicates that higher …


Biopharmaceutical Characteristics Of Nifurtimox Tablets For Age- And Body Weight-Adjusted Dosing In Patients With Chagas Disease., Heino Stass, Ethel Feleder, Facundo Garcia-Bournissen, Johannes Nagelschmitz, Boris Weimann, Gustavo Yerino, Jaime Altcheh May 2021

Biopharmaceutical Characteristics Of Nifurtimox Tablets For Age- And Body Weight-Adjusted Dosing In Patients With Chagas Disease., Heino Stass, Ethel Feleder, Facundo Garcia-Bournissen, Johannes Nagelschmitz, Boris Weimann, Gustavo Yerino, Jaime Altcheh

Paediatrics Publications

Treatment of Chagas disease with nifurtimox requires age- and body weight-adjusted dosing, resulting in complex dosing instructions. Appropriate formulations are needed for precise and compliant dosing, especially in pediatric patients. We characterized the biopharmaceutical features of a standard nifurtimox 120-mg tablet and a 30-mg tablet developed to improve dose accuracy. Two open-label, randomized crossover studies were conducted in adult outpatients with Chagas disease. One study investigated whether 4 × 30-mg tablets and 1 × 120-mg tablet were bioequivalent and whether tablets can be administered as an aqueous slurry without affecting bioavailability. The second study investigated the effect of a high-calorie/high-fat …


Risk Factors For Re-Hospitalization Following Neonatal Discharge Of Extremely Preterm Infants In Canada, Zakariya Bambala Puthattayil, Thuy Mai Luu, Marc Beltempo, Shannon Cross, Thevanisha Pillay, Marilyn Ballantyne, Anne Synnes, Prakesh Shah, Thierry Daboval Apr 2021

Risk Factors For Re-Hospitalization Following Neonatal Discharge Of Extremely Preterm Infants In Canada, Zakariya Bambala Puthattayil, Thuy Mai Luu, Marc Beltempo, Shannon Cross, Thevanisha Pillay, Marilyn Ballantyne, Anne Synnes, Prakesh Shah, Thierry Daboval

Paediatrics Publications

Objective: Survivors of extremely preterm birth are at risk of re-hospitalization but risk factors in the Canadian population are unknown. Our objective is to identify neonatal, sociodemographic, and geographic characteristics that predict re-hospitalization in Canadian extremely preterm neonates. Methods: This is a retrospective analysis of a prospective observational cohort study that included preterm infants born 22 to 28 weeks’ gestational age from April 1, 2009 to September 30, 2011 and seen at 18 to 24 months corrected gestational age in a Canadian Neonatal Follow-Up Network clinic. Characteristics of infants re-hospitalized versus not re-hospitalized are compared. The potential neonatal, sociodemographic, and …


Timing Of Cgm Initiation In Pediatric Diabetes: The Cgm Time Trial., Margaret L Lawson, Kate C Verbeeten, Jennilea M Courtney, Brenda J Bradley, Karen Mcassey, Cheril Clarson, Susan Kirsch, Jacqueline R Curtis, Farid H Mahmud, Christine Richardson, Tammy Cooper, Jason Chan, Ken Tang Mar 2021

Timing Of Cgm Initiation In Pediatric Diabetes: The Cgm Time Trial., Margaret L Lawson, Kate C Verbeeten, Jennilea M Courtney, Brenda J Bradley, Karen Mcassey, Cheril Clarson, Susan Kirsch, Jacqueline R Curtis, Farid H Mahmud, Christine Richardson, Tammy Cooper, Jason Chan, Ken Tang

Paediatrics Publications

OBJECTIVE: To determine whether timing of CGM initiation offering low glucose suspend (LGS) affects CGM adherence in children and youth starting insulin pump therapy.

METHODS: A 5-site RCT of pump-naïve subjects (aged 5-18 years) with type 1 diabetes (T1D) for at least 1 year compared simultaneous pump and CGM initiation offering LGS vs standard pump therapy with CGM initiation delayed for 6 months. Primary outcome was CGM adherence (hours per 28 days) (MiniMed™ Paradigm™ Veo™ system; CareLink Pro™ software) over 6 months after CGM initiation. Secondary outcome HbA1c was measured centrally. Linear mixed-models and ordinary least squares models were fitted …


Improving Access And Mental Health For Youth Using Smart Technologies, Cheryl Forchuk, Sandra Fisman, Jeffrey P. Reiss, Kerry Collins, Julie Eichstedt, Abraham Rudnick, Wanrudee Isaranuwatchai, Jeffrey S. Hoch, Xianbin Wang, Daniel Lizotte, Shona Macpherson, Richard Booth Mar 2021

Improving Access And Mental Health For Youth Using Smart Technologies, Cheryl Forchuk, Sandra Fisman, Jeffrey P. Reiss, Kerry Collins, Julie Eichstedt, Abraham Rudnick, Wanrudee Isaranuwatchai, Jeffrey S. Hoch, Xianbin Wang, Daniel Lizotte, Shona Macpherson, Richard Booth

Paediatrics Publications

The overall objective of this research is to evaluate the use of a mobile health smartphone application (app) to improve the mental health of youth between the ages of 14 and 25 years, with symptoms of anxiety and/or depression. This project includes 122 youth who are accessing outpatient mental health services at one of three hospitals and two community agencies. The youth and care providers are using the Smart technology to enhance care. The technology uses mobile questionnaires (QnairesTM) to help promote self-assessment and track changes to support the plan of care. The youth were provided a smartphone and talk/text/data …


Process Evaluation Of Fruit And Vegetables Distribution Interventions In School-Based Settings: A Systematic Review, Mariam R. Ismail, Jamie A. Seabrook, Jason A. Gilliland Mar 2021

Process Evaluation Of Fruit And Vegetables Distribution Interventions In School-Based Settings: A Systematic Review, Mariam R. Ismail, Jamie A. Seabrook, Jason A. Gilliland

Paediatrics Publications

Despite the importance of process evaluation in program evaluations, research has focused primarily on the effectiveness of fruit and vegetables (FVs) distribution interventions on children's consumption, with little attention given to how these interventions achieve their outcomes. Five bibliographic databases (Embase, PubMed, ProQuest, Scopus, and Web of Science Core Collection) were searched in June 2019 for studies of interventions where the main focus was the implementation of distributed FVs to school-aged children as a snack. The Critical Appraisal Skills Programme (CASP) tool was used to appraise the risk of bias within included studies. Data were extracted based on study characteristics …


Defining The Genotypic And Phenotypic Spectrum Of X-Linked Msl3-Related Disorder, Theresa Brunet, Kirsty Mcwalter, Katharina Mayerhanser, Grace M Anbouba, Amy Armstrong-Javors, Ingrid Bader, Evan Baugh, Amber Begtrup, Caleb P Bupp, Bert L Callewaert, Anna Cereda, Margot A Cousin, Juan C Del Rey Jimenez, Laurie Demmer, Nikita R Dsouza, Nicole Fleischer, Ralitza H Gavrilova, Sumedha Ghate, Elisabeth Graf, Andrew Green, Sarah R Green, Maria Iascone, Ameni Kdissa, Dirk Klee, Eric W Klee, Emily Lancaster, Kristin Lindstrom, Johannes A Mayr, Meriel Mcentagart, Naomi J L Meeks, Dana Mittag, Harrison Moore, Anne K Olsen, Damara Ortiz, Gretchen Parsons, Loren D M Pena, Richard E Person, Sumit Punj, Gonzalo Alonso Ramos-Rivera, Maria J Guillen Sacoto, G Bradley Schaefer, Rhonda E Schnur, Tiana M Scott, Daryl A Scott, Carolyn R Serbinski, Vandana Shashi, Victoria Mok Siu, Barbro Fossøy Stadheim, Jennifer A Sullivan, Jana Švantnerová, Lea Velsher, David S Wargowski, Ingrid M Wentzensen, Dagmar Wieczorek, Juliane Winkelmann, Patrick Yap, Michael Zech, Michael T Zimmermann, Thomas Meitinger, Felix Distelmaier, Matias Wagner Feb 2021

Defining The Genotypic And Phenotypic Spectrum Of X-Linked Msl3-Related Disorder, Theresa Brunet, Kirsty Mcwalter, Katharina Mayerhanser, Grace M Anbouba, Amy Armstrong-Javors, Ingrid Bader, Evan Baugh, Amber Begtrup, Caleb P Bupp, Bert L Callewaert, Anna Cereda, Margot A Cousin, Juan C Del Rey Jimenez, Laurie Demmer, Nikita R Dsouza, Nicole Fleischer, Ralitza H Gavrilova, Sumedha Ghate, Elisabeth Graf, Andrew Green, Sarah R Green, Maria Iascone, Ameni Kdissa, Dirk Klee, Eric W Klee, Emily Lancaster, Kristin Lindstrom, Johannes A Mayr, Meriel Mcentagart, Naomi J L Meeks, Dana Mittag, Harrison Moore, Anne K Olsen, Damara Ortiz, Gretchen Parsons, Loren D M Pena, Richard E Person, Sumit Punj, Gonzalo Alonso Ramos-Rivera, Maria J Guillen Sacoto, G Bradley Schaefer, Rhonda E Schnur, Tiana M Scott, Daryl A Scott, Carolyn R Serbinski, Vandana Shashi, Victoria Mok Siu, Barbro Fossøy Stadheim, Jennifer A Sullivan, Jana Švantnerová, Lea Velsher, David S Wargowski, Ingrid M Wentzensen, Dagmar Wieczorek, Juliane Winkelmann, Patrick Yap, Michael Zech, Michael T Zimmermann, Thomas Meitinger, Felix Distelmaier, Matias Wagner

Paediatrics Publications

PURPOSE: We sought to delineate the genotypic and phenotypic spectrum of female and male individuals with X-linked, MSL3-related disorder (Basilicata-Akhtar syndrome).

METHODS: Twenty-five individuals (15 males, 10 females) with causative variants in MSL3 were ascertained through exome or genome sequencing at ten different sequencing centers.

RESULTS: We identified multiple variant types in MSL3 (ten nonsense, six frameshift, four splice site, three missense, one in-frame-deletion, one multi-exon deletion), most proven to be de novo, and clustering in the terminal eight exons suggesting that truncating variants in the first five exons might be compensated by an alternative MSL3 transcript. Three-dimensional modeling of …


Sensitivity Of Arterial Spin Labeling For Characterization Of Longitudinal Perfusion Changes In Frontotemporal Dementia And Related Disorders, Tracy Ssali, Udunna C. Anazodo, Lucas Narciso, Linshan Liu, Sarah Jesso, Lauryn Richardson, Matthias Günther, Simon Konstandin, Klaus Eickel, Frank Prato, Elizabeth Finger, Keith St. Lawrence Jan 2021

Sensitivity Of Arterial Spin Labeling For Characterization Of Longitudinal Perfusion Changes In Frontotemporal Dementia And Related Disorders, Tracy Ssali, Udunna C. Anazodo, Lucas Narciso, Linshan Liu, Sarah Jesso, Lauryn Richardson, Matthias Günther, Simon Konstandin, Klaus Eickel, Frank Prato, Elizabeth Finger, Keith St. Lawrence

Paediatrics Publications

Background: Advances in the understanding of the pathophysiology of frontotemporal dementia (FTD) and related disorders, along with the development of novel candidate disease modifying treatments, have stimulated the need for tools to assess the efficacy of new therapies. While perfusion imaging by arterial spin labeling (ASL) is an attractive approach for longitudinal imaging biomarkers of neurodegeneration, sources of variability between sessions including arterial transit times (ATT) and fluctuations in resting perfusion can reduce its sensitivity. Establishing the magnitude of perfusion changes that can be reliably detected is necessary to delineate longitudinal perfusion changes related to disease processes from the effects …


Examining How Changes In Provincial Policy On Vape Marketing Impacted The Distribution Of Vaping Advertisements Near Secondary Schools In London, Ontario, Gina Martin, Drew D. Bowman, Megan Graat, Andrew F. Clark, Alexander J. Wray, Zoe Askwith, Jamie A. Seabrook, Jason A. Gilliland Jan 2021

Examining How Changes In Provincial Policy On Vape Marketing Impacted The Distribution Of Vaping Advertisements Near Secondary Schools In London, Ontario, Gina Martin, Drew D. Bowman, Megan Graat, Andrew F. Clark, Alexander J. Wray, Zoe Askwith, Jamie A. Seabrook, Jason A. Gilliland

Paediatrics Publications

Objectives: On January 1, 2020, the Government of Ontario passed a regulation banning vaping advertisements by retailers, apart from specialty shops. A motivation for this ban was to limit youth exposure to vaping advertisements. The primary goal of this research was to evaluate the impact of this ban on the number and density of vaping advertisements surrounding secondary schools. Additionally, we examined whether the number of vaping advertisements varied by school socio-demographic characteristics. Methods: This study used a pre-post design. Audits were conducted December 2019 (pre-ban) and again January to February 2020 (post-ban), to identify vaping advertisements within 800 m …


Moyamoya Syndrome In An Infant With Aicardi-Goutières And Williams Syndromes: A Case Report, Jagraj S. Brar, Rahul Verma, Mohammed Al-Omari, Victoria M. Siu, Andrea V. Andrade, Michael T. Jurkiewicz, Saptharishi Lalgudi Ganesan Jan 2021

Moyamoya Syndrome In An Infant With Aicardi-Goutières And Williams Syndromes: A Case Report, Jagraj S. Brar, Rahul Verma, Mohammed Al-Omari, Victoria M. Siu, Andrea V. Andrade, Michael T. Jurkiewicz, Saptharishi Lalgudi Ganesan

Paediatrics Publications

Stroke in infancy is a rare phenomenon but can lead to significant long-term disability. We present the story of a 6-month-old Old Order Amish infant with underlying Williams syndrome, a rare neurodevelopmental disorder caused by a microdeletion, encompassing the elastin gene that produces abnormalities in elastic fibers of the lungs and vessels. This infant presented with lethargy, irritability, and a new-onset generalized tonic-clonic seizure. Brain magnetic resonance imaging (MRI) was consistent with ischemic stroke in the supratentorial regions. MR angiogram demonstrated bilateral narrowing of the internal carotid arteries with ivy sign, suggestive of Moyamoya. Moyamoya disease/syndrome is a cerebrovascular condition …


Pannexin 1 Binds Β-Catenin To Modulate Melanoma Cell Growth And Metabolism, Samar Sayedyahossein, Kenneth Huang, Zhigang Li, Christopher Zhang, Alexandra M. Kozlov, Danielle Johnston, Daniel Nouri-Nejad, Lina Dagnino, Dean H. Betts, David B. Sacks, Silvia Penuela Jan 2021

Pannexin 1 Binds Β-Catenin To Modulate Melanoma Cell Growth And Metabolism, Samar Sayedyahossein, Kenneth Huang, Zhigang Li, Christopher Zhang, Alexandra M. Kozlov, Danielle Johnston, Daniel Nouri-Nejad, Lina Dagnino, Dean H. Betts, David B. Sacks, Silvia Penuela

Paediatrics Publications

Melanoma is the most aggressive skin malignancy with increasing incidence worldwide. Pannexin1 (PANX1), a member of the pannexin family of channel-forming glycoproteins, regulates cellular processes in melanoma cells including proliferation, migration, and invasion/metastasis. However, the mechanisms responsible for coordinating and regulating PANX1 function remain unclear. Here, we demonstrated a direct interaction between the C-terminal region of PANX1 and the N-terminal portion of β-catenin, a key transcription factor in the Wnt pathway. At the protein level, β-catenin was significantly decreased when PANX1 was either knocked down or inhibited by two PANX1 blockers, Probenecid and Spironolactone. Immunofluorescence imaging showed a disrupted pattern …


Correlates Of Lifetime And Past Month Vape Use In A Sample Of Canadian University Students, Jamie A. Seabrook, Jasna Twynstra, Jason A. Gilliland Jan 2021

Correlates Of Lifetime And Past Month Vape Use In A Sample Of Canadian University Students, Jamie A. Seabrook, Jasna Twynstra, Jason A. Gilliland

Paediatrics Publications

Introduction: This study examines correlates of lifetime (ie, ever vaped) and past month vape use among students aged 17 to 19 years, 20 to 25 years, and 26+ years from Western University in London, Ontario. The secondary objective is to assess lifetime and past month vape use among students not of legal age to purchase vaping products in Ontario (ie, those 17 to 18 years only). Methods: Using Qualtrics, a cross-sectional survey was sent via email to all students at Western University (N = 38 442), assessing their current and past risk-taking behaviors, mental health, sociodemographic characteristics, as well as …


The Quantity And Composition Of Household Food Waste During The Covid-19 Pandemic: A Direct Measurement Study In Canada, Haley Everitt, Paul Van Der Werf, Jamie A. Seabrook, Alexander Wray, Jason A. Gilliland Jan 2021

The Quantity And Composition Of Household Food Waste During The Covid-19 Pandemic: A Direct Measurement Study In Canada, Haley Everitt, Paul Van Der Werf, Jamie A. Seabrook, Alexander Wray, Jason A. Gilliland

Paediatrics Publications

The COVID-19 pandemic may have amplified the environmental, social, and economic implications of household food waste. A better understanding of household food wasting during the pandemic is needed to improve the management of waste and develop best practices for municipal waste management programs under crisis circumstances. A waste composition study was undertaken with 100 single-family households across the city of London, Ontario, Canada to determine the quantity and composition of household food waste disposed in June 2020, during the first wave of the COVID-19 pandemic. This study examines how household demographic, socioeconomic, and neighbourhood food environment characteristics influence household food …


Examining How Children's Gender Influences Parents’ Perceptions Of The Local Environment And Their Influence On Children's Independent Mobility, Alina Medeiros, Andrew F. Clark, Gina Martin, Jamie A. Seabrook, Jason Gilliland Jan 2021

Examining How Children's Gender Influences Parents’ Perceptions Of The Local Environment And Their Influence On Children's Independent Mobility, Alina Medeiros, Andrew F. Clark, Gina Martin, Jamie A. Seabrook, Jason Gilliland

Paediatrics Publications

Physical inactivity among children is a public health concern. Children's ability to travel independently is associated with increased physical activity and social connectedness. Consequently, it is concerning that children's independent mobility has decreased in recent years. Studies have highlighted that rates of independent mobility vary by gender; this study analyzed how correlates of independent mobility vary between boys (n = 476) and girls (n = 618) attending 32 elementary schools in Southwestern Ontario. Hierarchical logistic regression modeling methods were used. All analyzes were stratified by gender. For boys, age was negatively associated with travel with peers. Having one or more …