1,373 results match your criteria: "Centre Hospitalier Universitaire Sainte Justine[Affiliation]"

Background: Children treated for acute lymphoblastic leukemia (ALL) receive prolonged treatment, resulting in toxicities that affect health-related quality of life (HR-QoL). Longitudinal assessment of HR-QoL allows improved understanding of experiences with ALL.

Procedure: Parent-proxy and child self-report HR-QoL over the first year of chemotherapy were evaluated in the context of DFCI Protocol 05-001, a phase 3 therapeutic trial for childhood ALL.

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Background: Cancer predisposition syndromes (CPSs) are responsible for at least 10% of cancer diagnoses in children and adolescents, most of which are not clinically recognised prior to cancer diagnosis. A variety of clinical screening guidelines are used in healthcare settings to help clinicians detect patients who have a higher likelihood of having a CPS. The McGill Interactive Pediatric OncoGenetic Guidelines (MIPOGG) is an electronic health decision support tool that uses algorithms to help clinicians determine if a child/adolescent diagnosed with cancer should be referred to genetics for a CPS evaluation.

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Context: While oral immunotherapy (OIT) has been shown to promote the remission of mild peanut allergy in young children, there is still an unmet need for a disease-modifying intervention for older patients and those with severe diseases. In mice models, abatacept, a cytotoxic T lymphocyte-associated antigen-4 (CTLA-4) immunoglobulin fusion protein, has been shown to promote immune tolerance to food when used as an adjuvant to allergen immunotherapy. The goal of this study is to explore the potential efficacy of abatacept in promoting immune tolerance to food allergens during OIT in humans.

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Recognition of aberrant gene isoforms due to DNA events can impact risk stratification and molecular classification of hematolymphoid tumors. In myelodysplastic syndromes, KMT2A partial tandem duplication (PTD) was one of the top adverse predictors in the International Prognostic Scoring System-Molecular study. In B-cell acute lymphoblastic leukemia (B-ALL), ERG isoforms have been proposed as markers of favorable-risk DUX4 rearrangements, whereas deletion-mediated IKZF1 isoforms are associated with adverse prognosis and have been extended to the high-risk IKZF1 signature defined by codeletions, including PAX5.

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Current understanding of word-finding (WF) difficulties in children and their underlying language processing deficit is poor. Authors have proposed that different underlying deficits may result in different profiles. The current study aimed to better understand WF difficulties by identifying difficult tasks for children with WF difficulties and by focusing on semantic vs.

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-acetylneuraminate pyruvate lyase controls sialylation of muscle glycoproteins essential for muscle regeneration and function.

Sci Adv

June 2023

Department of Pediatrics, Centre Hospitalier Universitaire Sainte-Justine Research Center, University of Montreal, Montreal, QC, Canada.

Deleterious variants in acetylneuraminate pyruvate lyase (NPL) cause skeletal myopathy and cardiac edema in humans and zebrafish, but its physiological role remains unknown. We report generation of mouse models of the disease: , carrying the human p.Arg63Cys variant, and with a 116-bp exonic deletion.

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Neurodevelopmental challenges in children born very preterm are common and not improving. This study tested the feasibility of using Evidence-based Practice to Improve Quality (EPIQ), a proven quality improvement technique that incorporates scientific evidence to target improving language abilities in very preterm populations in 10 Canadian neonatal follow-up programs. Feasibility was defined as at least 70% of sites completing four intervention cycles and 75% of cycles meeting targeted aims.

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Phenotypic effects of genetic variants associated with autism.

Nat Med

July 2023

Human Genetics and Cognitive Functions, Institut Pasteur, UMR3571 CNRS, IUF, Université Paris Cité, Paris, France.

Article Synopsis
  • Over 100 genes are linked to autism, but the prevalence of rare genetic variants in people without an autism diagnosis is not well understood.
  • This study analyzed data from over 13,000 individuals with autism and 210,000 without, finding that rare loss-of-function variants in autism-associated genes negatively impact intelligence, education, and income.
  • Brain imaging data showed no significant anatomical differences related to these variants, suggesting a need for more research on how genetic factors influence individual experiences beyond autism diagnosis.
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Temporo-basal sulcal connections: a manual annotation protocol and an investigation of sexual dimorphism and heritability.

Brain Struct Funct

July 2023

Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, CNRS, Inria, Inserm, AP-HP, Hôpital de la Pitié Salpêtrière, 75013, Paris, France.

The temporo-basal region of the human brain is composed of the collateral, the occipito-temporal, and the rhinal sulci. We manually rated (using a novel protocol) the connections between rhinal/collateral (RS-CS), collateral/occipito-temporal (CS-OTS) and rhinal/occipito-temporal (RS-OTS) sulci, using the MRI of nearly 3400 individuals including around 1000 twins. We reported both the associations between sulcal polymorphisms as well with a wide range of demographics (e.

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Article Synopsis
  • The study examines how patients, caregivers, and families perceive pediatric spine surgery using social media, particularly Twitter, focusing on both qualitative and quantitative data.
  • A total of 2424 tweets were analyzed, revealing that 79% came from patients and caregivers, with 83.5% discussing personal experiences, and only a small number mentioning research related to the surgery.
  • Results show a mix of sentiments about the surgery experiences: 48% positive, 25% negative, and 26% neutral, suggesting that understanding these discussions can help surgeons address patient and family concerns more effectively.
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Just-In-Time Neonatal Endotracheal Intubation Simulation Training: A Randomized Controlled Trial.

J Pediatr

October 2023

Division of Neonatology, Department of Pediatrics, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada; Centre for Applied Health Sciences Education (CPASS), Faculty of Medicine, Université de Montréal, Montreal, QC, Canada; Centre Hospitalier Universitaire Sainte-Justine Research Center, Montreal, QC, Canada. Electronic address:

Article Synopsis
  • The study aimed to compare the effectiveness of simulation-based just-in-time training (JITT) versus a standard 5-minute video in teaching neonatal endotracheal intubation (ETI) skills to junior residents.
  • Results showed that while both training methods had similar overall success rates, the simulation-based JITT led to a higher success rate on the first attempt and required less time for attempts.
  • Although simulation-based JITT had some advantages, it also resulted in more mucosal trauma events, suggesting it should be used as a supplementary training method rather than a complete replacement.
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Background: Severe combined immunodeficiency (SCID) is fatal unless durable adaptive immunity is established, most commonly through allogeneic haematopoietic cell transplantation (HCT). The Primary Immune Deficiency Treatment Consortium (PIDTC) explored factors affecting the survival of individuals with SCID over almost four decades, focusing on the effects of population-based newborn screening for SCID that was initiated in 2008 and expanded during 2010-18.

Methods: We analysed transplantation-related data from children with SCID treated at 34 PIDTC sites in the USA and Canada, using the calendar time intervals 1982-89, 1990-99, 2000-09, and 2010-18.

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French national diagnostic and care protocol for Kawasaki disease.

Rev Med Interne

July 2023

Service de rhumatologie pédiatrique, centre de référence des maladies auto-inflammatoires rares et des amyloses, CHU de Bicêtre, 78, rue du Général-Leclerc, 94275 Le Kremlin-Bicêtre, France.

Kawasaki disease (KD) is an acute vasculitis with a particular tropism for the coronary arteries. KD mainly affects male children between 6 months and 5 years of age. The diagnosis is clinical, based on the international American Heart Association criteria.

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Objectives: Although hemispheric surgeries are among the most effective procedures for drug-resistant epilepsy (DRE) in the pediatric population, there is a large variability in seizure outcomes at the group level. A recently developed HOPS score provides individualized estimation of likelihood of seizure freedom to complement clinical judgement. The objective of this study was to develop a freely accessible online calculator that accurately predicts the probability of seizure freedom for any patient at 1-, 2-, and 5-years post-hemispherectomy.

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Clinical course, imaging, and pathological features of 45 adult and pediatric cases of myelin oligodendrocyte glycoprotein antibody-associated disease.

Mult Scler Relat Disord

August 2023

Centre Hospitalier de l'Université de Montréal (CHUM), Department of Neurosciences, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Université de Montréal, Montreal, QC, Canada. Electronic address:

Article Synopsis
  • MOGAD is a newly identified neuroinflammatory disease characterized by the presence of anti-MOG antibodies, with symptoms varying widely among patients.
  • A study conducted in Quebec found a prevalence of 0.52 cases per 100,000 people, with optic neuritis and acute disseminated encephalomyelitis being the most common initial symptoms.
  • Only 38% of patients fully recovered within 4 weeks, and a significant number of patients experienced relapses and residual deficits, indicating a serious disease course for many.*
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Open and laparoscopic inguinal hernia repair in children: A regional experience.

J Pediatr Surg

January 2023

Harvey E. Beardmore Division of Pediatric Surgery, The Montreal Children's Hospital, McGill University Health Centre, 1001 Décarie Boulevard, Room B04.2028, Montréal, QC H4A 3J1, Canada. Electronic address:

Purpose: The optimal approach for pediatric inguinal hernia repair continues to be debated. We conducted a regional retrospective study to assess rates of recurrence and metachronous hernias after open repair (OPEN) and laparoscopic repair (LAP) METHODS: A retrospective cohort study was conducted at two children's hospitals that serve a region of approximately 4 million people. All patients < 14 years old undergoing OPEN or LAP by pediatric surgeons during a 5-year period (2011 - 2015) were analyzed after a minimum follow up of 4 years.

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Background: The survival rates for pediatric patients with relapsed and refractory tumors are poor. Successful treatment strategies are currently lacking and there remains an unmet need for novel therapies for these patients. We report here the results of a phase 1 study of talimogene laherparepvec (T-VEC) and explore the safety of this oncolytic immunotherapy for the treatment of pediatric patients with advanced non-central nervous system tumors.

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Importance: Ileocolic intussusception is an important cause of intestinal obstruction in children. Reduction of ileocolic intussusception using air or fluid enema is the standard of care. This likely distressing procedure is usually performed without sedation or analgesia, but practice variation exists.

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We recently devised continuous "sex-scores" that sum up multiple quantitative traits, weighted by their respective sex-difference effect sizes, as an approach to estimating polyphenotypic "maleness/femaleness" within each binary sex. To identify the genetic architecture underlying these sex-scores, we conducted sex-specific genome-wide association studies (GWASs) in the UK Biobank cohort (females: n = 161,906; males: n = 141,980). As a control, we also conducted GWASs of sex-specific "sum-scores", simply aggregating the same traits, without weighting by sex differences.

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Objective: To determine how neonatal growth velocity affects the association between birth weight and neurodevelopmental outcomes in infants born preterm.

Study Design: This study is a secondary analysis of the Maternal Omega-3 Supplementation to Reduce Bronchopulmonary Dysplasia in Very Preterm Infants (MOBYDIck) randomized multicenter trial conducted in breastfed infants born at <29 weeks of gestation, whose mothers were supplemented with docosahexaenoic acid or placebo during the neonatal period. Neurodevelopmental outcomes were assessed at 18-22 months of corrected age using the Bayley-III cognitive and language composite scores.

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Gut Microbiome Composition Is Associated With Future Onset of Crohn's Disease in Healthy First-Degree Relatives.

Gastroenterology

September 2023

Division of Gastroenterology & Hepatology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; Zane Cohen Center for Digestive Diseases, Mount Sinai Hospital, Toronto, Ontario, Canada. Electronic address:

Background & Aims: The cause of Crohn's disease (CD) is unknown, but the current hypothesis is that microbial or environmental factors induce gut inflammation in genetically susceptible individuals, leading to chronic intestinal inflammation. Case-control studies of patients with CD have cataloged alterations in the gut microbiome composition; however, these studies fail to distinguish whether the altered gut microbiome composition is associated with initiation of CD or is the result of inflammation or drug treatment.

Methods: In this prospective cohort study, 3483 healthy first-degree relatives (FDRs) of patients with CD were recruited to identify the gut microbiome composition that precedes the onset of CD and to what extent this composition predicts the risk of developing CD.

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Article Synopsis
  • This study examines how white matter microstructure is affected in youth born with congenital heart disease (CHD) and those born preterm, using advanced brain imaging techniques.
  • Both groups showed lower levels of myelination and axon density compared to healthy peers, indicating similar underlying issues in white matter.
  • However, the preterm group exhibited distinct alterations in axonal organization, pointing to unique impacts of preterm birth on brain structure that differ from those seen in CHD.
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Organ donation is not meeting demand, and yet 30-60% of potential donors are potentially not identified. Current systems rely on manual identification and referral to an Organ Donation Organization (ODO). We hypothesized that developing an automated screening system based on machine learning could reduce the proportion of missed potentially eligible organ donors.

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