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Full-Text Articles in Medicine and Health Sciences

Assessing Cerebral Blood Flow, Oxygenation And Cytochrome C Oxidase Stability In Preterm Infants During The First 3 Days After Birth, Ajay Rajaram, Daniel Milej, Marianne Suwalski, Lilian Kebaya, Matthew Kewin, Lawrence Yip, Sandrine De Ribaupierre, Victor Han, Mamadou Diop, Soume Bhattacharya, Keith St. Lawrence Dec 2022

Assessing Cerebral Blood Flow, Oxygenation And Cytochrome C Oxidase Stability In Preterm Infants During The First 3 Days After Birth, Ajay Rajaram, Daniel Milej, Marianne Suwalski, Lilian Kebaya, Matthew Kewin, Lawrence Yip, Sandrine De Ribaupierre, Victor Han, Mamadou Diop, Soume Bhattacharya, Keith St. Lawrence

Paediatrics Publications

A major concern with preterm birth is the risk of neurodevelopmental disability. Poor cerebral circulation leading to periods of hypoxia is believed to play a significant role in the etiology of preterm brain injury, with the first three days of life considered the period when the brain is most vulnerable. This study focused on monitoring cerebral perfusion and metabolism during the first 72 h after birth in preterm infants weighing less than 1500 g. Brain monitoring was performed by combining hyperspectral near-infrared spectroscopy to assess oxygen saturation and the oxidation state of cytochrome c oxidase (oxCCO), with diffuse correlation spectroscopy …


Principles Of Dormancy Evident In High-Grade Serous Ovarian Cancer, Trevor G. Shepherd, Frederick A. Dick Dec 2022

Principles Of Dormancy Evident In High-Grade Serous Ovarian Cancer, Trevor G. Shepherd, Frederick A. Dick

Paediatrics Publications

In cancer, dormancy refers to a clinical state in which microscopic residual disease becomes non-proliferative and is largely refractory to chemotherapy. Dormancy was first described in breast cancer where disease can remain undetected for decades, ultimately leading to relapse and clinical presentation of the original malignancy. A long latency period can be explained by withdrawal from cell proliferation (cellular dormancy), or a balance between proliferation and cell death that retains low levels of residual disease (tumor mass dormancy). Research into cellular dormancy has revealed features that define this state. They include arrest of cell proliferation, altered cellular metabolism, and unique …


Sex-Specific Alterations In Hepatic Cholesterol Metabolism In Low Birth Weight Adult Guinea Pigs., Ousseynou Sarr, Katherine E Mathers, Christina Vanderboor, Kristina Wiggers, Aditya Devgan, Daniel B Hardy, Lin Zhao, Timothy Regnault Apr 2022

Sex-Specific Alterations In Hepatic Cholesterol Metabolism In Low Birth Weight Adult Guinea Pigs., Ousseynou Sarr, Katherine E Mathers, Christina Vanderboor, Kristina Wiggers, Aditya Devgan, Daniel B Hardy, Lin Zhao, Timothy Regnault

Paediatrics Publications

BACKGROUND: Intrauterine growth restriction and low birth weight (LBW) have been widely reported as an independent risk factor for adult hypercholesterolaemia and increased hepatic cholesterol in a sex-specific manner. However, the specific impact of uteroplacental insufficiency (UPI), a leading cause of LBW in developed world, on hepatic cholesterol metabolism in later life, is ill defined and is clinically relevant in understanding later life liver metabolic health trajectories.

METHODS: Hepatic cholesterol, transcriptome, cholesterol homoeostasis regulatory proteins, and antioxidant markers were studied in UPI-induced LBW and normal birth weight (NBW) male and female guinea pigs at 150 days.

RESULTS: Hepatic free and …


Parental Perspectives On The Transfer Process For Critically Ill Children, Saoirse Cameron, Anna C. Gunz Apr 2022

Parental Perspectives On The Transfer Process For Critically Ill Children, Saoirse Cameron, Anna C. Gunz

Paediatrics Publications

Objective: To understand parental stressors and identify potential stress-mitigators during interfacility transfer of critically ill children. Methods: Descriptive qualitative multi-case study using semi-structured interviews. This study involved caregivers of patients admitted to the Paediatric Critical Care Unit at Children’s Hospital, London Health Sciences Centre transported from outlying hospitals. Study participants were recruited through purposeful sampling. Interviews were recorded, transcribed verbatim and manually de-identified. Coding was performed by two independent coders using a standard method of content analysis to identify common themes. Results: Themes were identified and reached saturation after twelve interviews were completed. Children were admitted primarily from Northwestern and …


The Origin And Contribution Of Cancer-Associated Fibroblasts In Colorectal Carcinogenesis, Hiroki Kobayashi, Krystyna A. Gieniec, Tamsin R.M. Lannagan, Tongtong Wang, Naoya Asai, Yasuyuki Mizutani, Tadashi Iida, Ryota Ando, Elaine M. Thomas, Akihiro Sakai, Nobumi Suzuki, Mari Ichinose, Josephine A. Wright, Laura Vrbanac, Jia Q. Ng, Jarrad Goyne, Georgette Radford, Matthew J. Lawrence, Tarik Sammour, Yoku Hayakawa, Sonja Klebe, Alice E. Shin, Samuel Asfaha, Mark L. Bettington, Florian Rieder, Nicholas Arpaia, Tal Danino, Lisa M. Butler, Alastair D. Burt Mar 2022

The Origin And Contribution Of Cancer-Associated Fibroblasts In Colorectal Carcinogenesis, Hiroki Kobayashi, Krystyna A. Gieniec, Tamsin R.M. Lannagan, Tongtong Wang, Naoya Asai, Yasuyuki Mizutani, Tadashi Iida, Ryota Ando, Elaine M. Thomas, Akihiro Sakai, Nobumi Suzuki, Mari Ichinose, Josephine A. Wright, Laura Vrbanac, Jia Q. Ng, Jarrad Goyne, Georgette Radford, Matthew J. Lawrence, Tarik Sammour, Yoku Hayakawa, Sonja Klebe, Alice E. Shin, Samuel Asfaha, Mark L. Bettington, Florian Rieder, Nicholas Arpaia, Tal Danino, Lisa M. Butler, Alastair D. Burt

Paediatrics Publications

Background & Aims: Cancer-associated fibroblasts (CAFs) play an important role in colorectal cancer (CRC) progression and predict poor prognosis in CRC patients. However, the cellular origins of CAFs remain unknown, making it challenging to therapeutically target these cells. Here, we aimed to identify the origins and contribution of colorectal CAFs associated with poor prognosis. Methods: To elucidate CAF origins, we used a colitis-associated CRC mouse model in 5 different fate-mapping mouse lines with 5-bromodeoxyuridine dosing. RNA sequencing of fluorescence-activated cell sorting–purified CRC CAFs was performed to identify a potential therapeutic target in CAFs. To examine the prognostic significance of the …


Cervicofacial Actinomycosis In The Pediatric Population: Presentation And Management, Karan Gandhi, Benjamin D. Van Der Woerd, M. Elise Graham, Michelle Barton, Julie E. Strychowsky Mar 2022

Cervicofacial Actinomycosis In The Pediatric Population: Presentation And Management, Karan Gandhi, Benjamin D. Van Der Woerd, M. Elise Graham, Michelle Barton, Julie E. Strychowsky

Paediatrics Publications

Background: Infection caused by Actinomyces species is a rare cause of head and neck infection in children. This chronic cervicofacial infection can present with localized swelling, abscess formation, sinus drainage and can be complicated by osteomyelitis. Methods: Presented are 2 pediatric cases of secondary actinomycosis in the context of congenital lesions: 1 patient with a previously excised preauricular sinus and another with a persistent sublingual mass. A comprehensive literature search was conducted for reported cases of pediatric actinomycosis in the cervicofacial region. Results: Both cases presented were successfully treated with a combination of complete surgical excision of the lesions and …


Still Trouble With Serum Creatinine Measurements, Alexandra Kowalczyk, Maria Esther Diaz-Gonzalez De Ferris, Guido Filler Mar 2022

Still Trouble With Serum Creatinine Measurements, Alexandra Kowalczyk, Maria Esther Diaz-Gonzalez De Ferris, Guido Filler

Paediatrics Publications

No abstract provided.


School-Level Perspectives Of The Ontario School Nutrition Program, Mariam R. Ismail, Jason A. Gilliland, June I. Matthews, Danielle S. Battram Feb 2022

School-Level Perspectives Of The Ontario School Nutrition Program, Mariam R. Ismail, Jason A. Gilliland, June I. Matthews, Danielle S. Battram

Paediatrics Publications

The purpose of this study was to assess the implementation of a school snack program for children in elementary schools. School-level program volunteers’ experiences were explored using semi-structured interviews. Fieldnotes were taken during on-site school visits. Quantitative data were collected through a General Information Form and Weekly Logbooks. Seven elementary schools in Southwestern Ontario were invited and agreed to participate. Interviews (n = 27) revealed that volunteers valued the program for its universality, the excitement it created, the opportunity for students to try new foods, and the social interactions that it generated. Challenges included the burden on snack volunteers to …


Concordance Of Regional Hypoperfusion By Pcasl Mri And 15O-Water Pet In Frontotemporal Dementia: Is Pcasl An Efficacious Alternative?, Tracy Ssali, Lucas Narciso, Justin Hicks, Linshan Liu, Sarah Jesso, Lauryn Richardson, Matthias Günther, Simon Konstandin, Klaus Eickel, Frank Prato, Udunna C. Anazodo, Elizabeth Finger, Keith St Lawrence Jan 2022

Concordance Of Regional Hypoperfusion By Pcasl Mri And 15O-Water Pet In Frontotemporal Dementia: Is Pcasl An Efficacious Alternative?, Tracy Ssali, Lucas Narciso, Justin Hicks, Linshan Liu, Sarah Jesso, Lauryn Richardson, Matthias Günther, Simon Konstandin, Klaus Eickel, Frank Prato, Udunna C. Anazodo, Elizabeth Finger, Keith St Lawrence

Paediatrics Publications

Background: Clinical diagnosis of frontotemporal dementia (FTD) remains a challenge due to the overlap of symptoms among FTD subtypes and with other psychiatric disorders. Perfusion imaging by arterial spin labeling (ASL) is a promising non-invasive alternative to established PET techniques; however, its sensitivity to imaging parameters can hinder its ability to detect perfusion abnormalities. Purpose: This study evaluated the similarity of regional hypoperfusion patterns detected by ASL relative to the gold standard for imaging perfusion, PET with radiolabeled water (15O-water). Methods and materials: Perfusion by single-delay pseudo continuous ASL (SD-pCASL), free-lunch Hadamard encoded pCASL (FL_TE-pCASL), and 15O-water data were acquired …


Heterogeneity Of Diabetes: B-Cells, Phenotypes, And Precision Medicine: Proceedings Of An International Symposium Of The Canadian Institutes Of Health Research’S Institute Of Nutrition, Metabolism And Diabetes And The U.S. National Institutes Of Health’S National Institute Of Diabetes And Digestive And Kidney Diseases, William T. Cefalu, Dana K. Andersen, Guillermo Arreaza-Rubín, Christopher L. Pin, Sheryl Sato, C. Bruce Verchere, Minna Woo, Norman D. Rosenblum Jan 2022

Heterogeneity Of Diabetes: B-Cells, Phenotypes, And Precision Medicine: Proceedings Of An International Symposium Of The Canadian Institutes Of Health Research’S Institute Of Nutrition, Metabolism And Diabetes And The U.S. National Institutes Of Health’S National Institute Of Diabetes And Digestive And Kidney Diseases, William T. Cefalu, Dana K. Andersen, Guillermo Arreaza-Rubín, Christopher L. Pin, Sheryl Sato, C. Bruce Verchere, Minna Woo, Norman D. Rosenblum

Paediatrics Publications

One hundred years have passed since the discovery of insulin—an achievement that transformed diabetes from a fatal illness into a manageable chronic condition. The decades since that momentous achievement have brought ever more rapid innovation and advancement in diabetes research and clinical care. To celebrate the important work of the past century and help to chart a course for its continuation into the next, the Canadian Institutes of Health Research’s Institute of Nutrition, Metabolism and Diabetes and the U.S. National Institutes of Health’s National Institute of Diabetes and Digestive and Kidney Diseases recently held a joint international symposium, bringing together …


A Million Is More Than A Thousand: Children's Acquisition Of Very Large Number Words, Pierina Cheung, Daniel Ansari Jan 2022

A Million Is More Than A Thousand: Children's Acquisition Of Very Large Number Words, Pierina Cheung, Daniel Ansari

Paediatrics Publications

Very large numbers words such as “hundred,” “thousand,” “million,” “billion,” and “trillion” pose a learning problem for children because they are sparse in everyday speech and children's experience with extremely large quantities is scarce. In this study, we examine when children acquire the relative ordering of very large number words as a first step toward understanding their acquisition. In Study 1, a hundred and twenty-five 5–8-year-olds participated in a verbal number comparison task involving very large number words. We found that children can judge which of two very large numbers is more as early as age 6, prior to entering …


Frequency Of Diabetes Team Contacts In Children And Adolescents Using Insulin Pumps, Funmbi T. Babalola, Michael R. Miller, Andrea R. Ens, Robert I. Stein, Patricia H. Gallego, Cheril L. Clarson Jan 2022

Frequency Of Diabetes Team Contacts In Children And Adolescents Using Insulin Pumps, Funmbi T. Babalola, Michael R. Miller, Andrea R. Ens, Robert I. Stein, Patricia H. Gallego, Cheril L. Clarson

Paediatrics Publications

Background: The purpose of this study is to assess if a relationship exists between A1c within target (≤ 7.5%) and frequency of patient-initiated contact with diabetes team, in children with type 1 diabetes (T1DM) on an insulin pump. Additionally, to determine factors impacting frequency of contact. Methods: This was a retrospective study of children with T1DM on an insulin pump. Frequency of contact, type of contact, and A1c were collected. Study participants filled out a questionnaire at study entry. Results: One hundred and seventy-six participants were enrolled, with a mean age of 13 years. The median duration of T1DM was …


Impostorism And Anxiety Contribute To Burnout Among Resident Physicians, Rachel Q. Liu, Jacob Davidson, Tamara A. Van Hooren, Julie Ann M. Van Koughnett, Sarah Jones, Michael C. Ott Jan 2022

Impostorism And Anxiety Contribute To Burnout Among Resident Physicians, Rachel Q. Liu, Jacob Davidson, Tamara A. Van Hooren, Julie Ann M. Van Koughnett, Sarah Jones, Michael C. Ott

Paediatrics Publications

Purpose: Physician burnout is an issue that has come to the forefront in the past decade. While many factors contribute to burnout the impact of impostorism and self-doubt has largely been ignored. We investigated the relationship of anxiety and impostorism to burnout in postgraduate medical learners. Materials and methods: Postgraduate learners in four diverse training programs: Family Medicine (FM), Paediatric Medicine (PM), Anesthesiology (AN), and General Surgery (GS) were surveyed to identify the incidence of impostorism (IP), anxiety, and burnout. IP, anxiety, and burnout were evaluated using the Clance Impostor Phenomenon Scale (CIPS), Maslach Burnout Inventory-Human Services Survey (MBI-HSS), and …


The 2021 Eurpean Alliance Of Associations For Rheumatology/American College Of Rheumatology Points To Consider For Diagnosis And Management Of Autoinflammatory Type I Interferonopathies: Candle/Praas, Savi And Ags, Kader Cetin Gedik, Lovro Lamot, Micol Romano, Erkan Demirkaya, David Piskin, Sofia Torreggiani, Laura A. Adang, Thais Armangue, Kathe Barchus, Devon R. Cordova, Yanick J. Crow, Russell C. Dale, Karen L. Durrant, Despina Eleftheriou, Elisa M. Fazzi, Marco Gattorno, Francesco Gavazzi, Eric P. Hanson, Min Ae Lee-Kirsch, Gina A. Montealegre Sanchez, Bénédicte Neven, Simona Orcesi, Seza Ozen, M. Cecilia Poli, Elliot Schumacher, Davide Tonduti, Katsiaryna Uss, Daniel Aletaha, Brian M. Feldman Jan 2022

The 2021 Eurpean Alliance Of Associations For Rheumatology/American College Of Rheumatology Points To Consider For Diagnosis And Management Of Autoinflammatory Type I Interferonopathies: Candle/Praas, Savi And Ags, Kader Cetin Gedik, Lovro Lamot, Micol Romano, Erkan Demirkaya, David Piskin, Sofia Torreggiani, Laura A. Adang, Thais Armangue, Kathe Barchus, Devon R. Cordova, Yanick J. Crow, Russell C. Dale, Karen L. Durrant, Despina Eleftheriou, Elisa M. Fazzi, Marco Gattorno, Francesco Gavazzi, Eric P. Hanson, Min Ae Lee-Kirsch, Gina A. Montealegre Sanchez, Bénédicte Neven, Simona Orcesi, Seza Ozen, M. Cecilia Poli, Elliot Schumacher, Davide Tonduti, Katsiaryna Uss, Daniel Aletaha, Brian M. Feldman

Paediatrics Publications

Objective: Autoinflammatory type I interferonopathies, chronic atypical neutrophilic dermatosis with lipodystrophy and elevated temperature/proteasome-associated autoinflammatory syndrome (CANDLE/PRAAS), stimulator of interferon genes (STING)-associated vasculopathy with onset in infancy (SAVI) and Aicardi-Goutières syndrome (AGS) are rare and clinically complex immunodysregulatory diseases. With emerging knowledge of genetic causes and targeted treatments, a Task Force was charged with the development of 'points to consider' to improve diagnosis, treatment and long-term monitoring of patients with these rare diseases. Methods: Members of a Task Force consisting of rheumatologists, neurologists, an immunologist, geneticists, patient advocates and an allied healthcare professional formulated research questions for a systematic literature …


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 …