Publications by authors named "Lemieux A"

To prevent young children's injuries, studies have considered both child (e.g., temperament, age, sex) and parent factors (e.

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Chronic kidney disease (CKD) affects more than 10% of the world's population. Hemodialysis, along with peritoneal dialysis and renal transplant, is one of the renal replacement therapies offered to patients with CKD/end-stage renal disease (ESRD). To proceed with hemodialysis, vascular access is required.

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  • * Findings indicate that increases in childhood depression symptoms are linked to higher levels of alcohol and cannabis use in adolescence, while increased childhood anxiety symptoms are associated with lower levels of substance use.
  • * The research highlights the need for early identification and intervention strategies to prevent problematic substance use among adolescents, emphasizing the distinct pathways of anxiety and depression leading to different substance use outcomes.
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  • Adolescents with a history of conduct problems (CP) are more likely to use medical and psychiatric services, and this increase is linked to experiences of peer victimization and internalizing issues like anxiety and depression.
  • The study analyzed data from 744 participants, assessing their CP history, service use, and related behaviors through questionnaires completed by themselves, their parents, and teachers.
  • Results showed that peer victimization and internalizing problems play significant roles in the connection between CP and increased service use, and this impact is consistent across genders.
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Objective: To examine associations between preschooler screen time trajectories and executive functions and effortful control at age 5.

Methods: Prospective, community-based convenience sample of 315 parents of preschoolers (54% male), studied at the ages of 3.5 (2020), 4.

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Vascular access is an indispensable component of haemodialysis therapy for end-stage kidney disease patients. The arteriovenous fistula (AVF) is most common, but importantly, two-year failure rates are greater than fifty percent. AVF failure can occur due to a lack of suitable vascular remodelling, and inappropriate inflammation preventing maturation, or alternatively neointimal hyperplasia and vascular stenosis preventing long-term use.

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  • - T cell immune dysfunction is a significant issue in chronic HIV infection, and evaluating this dysfunction requires a method that involves both general and specific activation of T cells.
  • - Researchers developed a tunable artificial antigen-presenting cell (aAPC) system using silica microbeads, which showed that adding CD28 co-stimulation to anti-CD3 enhances T cell activation and cytokine production, especially IL-2.
  • - CD4 and CD8 T cells from untreated HIV patients displayed altered immune responses with a reduced dependence on CD28, and while antiretroviral therapy helps restore some functions in CD4 T cells, CD8 T cells remain impaired, suggesting persistent dysfunction linked to HIV.
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During pregnancy, exposure to alcohol represents an environmental insult capable of negatively impacting embryonic development. This influence can stem from disruption of molecular profiles, ultimately leading to manifestation of fetal alcohol spectrum disorder. Despite the central role of the placenta in proper embryonic development and successful pregnancy, studies on the placenta in a prenatal alcohol exposure and fetal alcohol spectrum disorder context are markedly lacking.

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Background: The quantitative effects of congenital heart disease (CHD) risk factors are not fully understood. We conducted a meta-analysis of all CHD risk factors. This report explores maternal medication, assisted reproductive technologies (ART), and familial and fetal factors.

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Gallbladder spillage during laparoscopic cholecystectomy procedures is common but rarely leads to patient morbidity due to complications such as abscesses or fistulas. We present the case of a 52-year-old woman post cholecystectomy, who presented to our dermatology clinic with abdominal pain and an epigastric subcutaneous nodule. The nodule was removed, leading to a complete resolution of her pain.

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Importance: Tablet use continues to increase in preschool-aged children. The use of mobile devices has been linked to child emotional dysregulation. However, few studies have been able to show a clear direction of association between child tablet use and the development of self-regulation skills.

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The evaluation of the effects of architecture and design in psychiatric hospitals primarily focuses on final outcomes, such as disease progression, and is made from the perspective of evidence-based medicine. Meanwhile, the evidence-informed, realist approach addresses how the intervention works. Understanding the underlying action mechanisms of the intervention is needed to facilitate its scaling-up and adaptation in new environments.

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Background: There is considerable heterogeneity in studies on prenatal risk factors for congenital heart diseases (CHDs). We performed a meta-analysis of all nongenetic factors of CHDs. This report presents results of factors related to maternal chronic diseases and parental exposures.

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Broadly applicable methods to identify and characterize antigen-specific CD4 and CD8 T cells are key to immunology research, including studies of vaccine responses and immunity to infectious diseases. We developed a multiplexed activation-induced marker (AIM) assay that presents several advantages compared to single pairs of AIMs. The simultaneous measurement of four AIMs (CD69, 4-1BB, OX40, and CD40L) creates six AIM pairs that define CD4 T cell populations with partial and variable overlap.

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Background: The placenta is vital for fetal development and its contributions to various developmental issues, such as pregnancy complications, fetal growth restriction, and maternal exposure, have been extensively studied in mice. The placenta forms mainly from fetal tissue and therefore has the same biological sex as the fetus it supports. Extensive research has delved into the placenta's involvement in pregnancy complications and future offspring development, with a notable emphasis on exploring sex-specific disparities.

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Background: This study investigated the putative associations between mothers' use of exclusive breast milk and the duration of breastfeeding with child cognitive development.

Methods: This study is based on 2,210 Canadian families with children assessed longitudinally from age 4 to 7 years on their memory-span and math skills. These cognitive abilities were measured with standardized tasks.

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A few studies have examined mental illness symptoms in university student-athletes during the COVID-19 pandemic, but the limited use of longitudinal design limits the understanding of the progression of these symptoms and the mechanisms by which they developed. The present research aims to describe the trajectory of variation of mental illness symptoms (anxiety, depression, alcohol consumption disorders, and eating disorders) throughout the pandemic, to test causality between perceived stress and symptoms, and to identify individual characteristics (sociodemographic, perceived stress, and social support) influencing the trajectories of mental illness symptoms. On three occasions during the pandemic, 211 university student-athletes were surveyed.

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Article Synopsis
  • Structural synaptic plasticity, which is crucial for learning and memory, can be disrupted by various neurological disorders and is influenced by proteins like dArc1.
  • dArc1 forms a capsid-like structure, carries its own mRNA, and is essential for the transfer of this mRNA across synapses for neuronal changes.
  • The study reveals that dArc1 regulates genes tied to important cellular functions, highlighting its role as a key player in synaptic plasticity and potential gene expression modifications.
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Elementary public schools remain the most common venues for addressing children's severe conduct problems. Nevertheless, very few longitudinal studies have examined association between receiving psychoeducational services for conduct problems in school and subsequent conduct problem severity. This study explored if psychoeducational service reception contributed to reduce conduct problems in a sample of 434 elementary school-aged boys and girls presenting a high level of conduct problems.

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Background: The extent to which digital media use by adolescents contributes to poor mental health, or vice-versa, remains unclear. The purpose of the present study is to clarify the strength and direction of associations between adolescent internet use and the development of depression symptoms using a longitudinal modeling approach. We also examine whether associations differ for boys and girls.

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Objectives: Learning and performing new routines are difficult for children with neurodevelopmental disorders. Studies have shown that consistency in child reinforcement and parental support are effective. For example, digital solutions such as serious games can be used to support parents and children in developing these life skills.

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Background: Children with conduct problems (CP) have been found to be heavy and costly medical service users in adulthood. However, there is little knowledge on how medical service use develops during childhood and adolescence among youth with and without childhood CP. Knowing whether differences in developmental trajectories of medical service use for specific types of problems (e.

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