480 results match your criteria: "Centre for Biomedical Research on Rare Diseases[Affiliation]"

Purpose: The impact of ventriculomegaly (VM) on cortical development and brain functionality has been extensively explored in existing literature. VM has been associated with higher risks of attention-deficit and hyperactivity disorders, as well as cognitive, language, and behavior deficits. Some studies have also shown a relationship between VM and cortical overgrowth, along with reduced cortical folding, both in fetuses and neonates.

View Article and Find Full Text PDF

Fetal Corpus Callosum Anomalies: A Review of Underlying Genetic Disorders and Prenatal Testing Options.

J Ultrasound Med

January 2025

BCNatal Fetal Medicine Research Center (Hospital Clınic and Hospital Sant Joan de Deu), University of Barcelona, Barcelona, Catalonia, Spain.

Anomalies of the corpus callosum (CC) are amongst the most common fetal Central Nervous System (CNS) anomalies detectable on ultrasound. Underlying genetic disease plays an important part in defining prognosis. Associations with aneuploidy and submicroscopic chromosomal deletions or duplications have been well demonstrated using chromosomal microarray analysis.

View Article and Find Full Text PDF

Deep cascaded registration and weakly-supervised segmentation of fetal brain MRI.

Heliyon

January 2025

BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, Spain.

Deformable image registration is a cornerstone of many medical image analysis applications, particularly in the context of fetal brain magnetic resonance imaging (MRI), where precise registration is essential for studying the rapidly evolving fetal brain during pregnancy and potentially identifying neurodevelopmental abnormalities. While deep learning has become the leading approach for medical image registration, traditional convolutional neural networks (CNNs) often fall short in capturing fine image details due to their bias toward low spatial frequencies. To address this challenge, we introduce a deep learning registration framework comprising multiple cascaded convolutional networks.

View Article and Find Full Text PDF

Background: Dystonia is a common neurological hyperkinetic movement disorder that can be caused by mutations in anoctamin 3 (ANO3, TMEM16C), a phospholipid scramblase and ion channel. We previously reported patients that were heterozygous for the ANO3 variants S651N, V561L, A599D and S651N, which cause dystonia by unknown mechanisms.

Methods: We applied electrophysiology, Ca measurements and cell biological methods to analyze the molecular mechanisms that lead to aberrant intracellular Ca signals and defective activation of K channels in patients heterozygous for the ANO3 variants.

View Article and Find Full Text PDF

Background And Aims: Primary Coenzyme Q (CoQ) deficiency caused by defects is a clinically heterogeneous mitochondrial condition characterized by reduced levels of CoQ in tissues. Next-generation sequencing has lately boosted the genetic diagnosis of an increasing number of patients. Still, functional validation of new variants of uncertain significance is essential for an adequate diagnosis, proper clinical management, treatment, and genetic counseling.

View Article and Find Full Text PDF

Background: Preeclampsia (PE) is a pregnancy complication characterized by hypertension, proteinuria, endothelial dysfunction, and complement dysregulation. Placenta-derived extracellular vesicles (EVs), necessary in maternal-fetal communication, might contribute to PE pathogenesis. Moreover, neutrophil extracellular traps (NETs) play a pathogenic role in other complement-mediated pathologies, and their contribution in PE remains unexplored.

View Article and Find Full Text PDF

Introduction: Adverse perinatal outcomes (APO) pose a significant global challenge, particularly in low- and middle-income countries (LMICs). This study aims to analyse two cohorts of high-risk pregnant women for APO to comprehend risk factors and improve prediction accuracy.

Methods: We considered an LMIC and a high-income country (HIC) population to derive XGBoost classifiers to predict low birth weight (LBW) from a comprehensive set of maternal and fetal characteristics including socio-demographic, past and current pregnancy information, fetal biometry and fetoplacental Doppler measurements.

View Article and Find Full Text PDF

Cardiac involvement (CI) in phosphomannomutase 2-congenital disorders of glycosylation (PMM2-CDG) is part of the multisystemic presentation contributing to high mortality rates. The most common cardiac manifestations are pericardial effusion, cardiomyopathy, and structural heart defects. A genotype-phenotype correlation with organ involvement has not yet been described.

View Article and Find Full Text PDF
Article Synopsis
  • - Glyoxylate, a toxic byproduct of metabolism, is rapidly converted into oxalate, necessitating effective detoxification systems in various cell compartments, with key enzymes AGT and GRHPR involved in this process.
  • - Mutations in genes encoding AGT and GRHPR lead to primary hyperoxaluria types 1 and 2, respectively, while a defect in the HOGA1 enzyme is associated with type 3, all resulting in serious kidney issues such as nephrocalcinosis and potential kidney failure.
  • - Recent advancements in therapies, particularly RNAi-based treatments (lumasiran and nedosiran), are improving outcomes for primary hyperoxaluria, with nedosiran targeting all
View Article and Find Full Text PDF

Heterozygous BTNL8 variants in individuals with multisystem inflammatory syndrome in children (MIS-C).

J Exp Med

December 2024

Section of Paediatric Infectious Disease, Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, UK.

Multisystem inflammatory syndrome in children (MIS-C) is a rare condition following SARS-CoV-2 infection associated with intestinal manifestations. Genetic predisposition, including inborn errors of the OAS-RNAseL pathway, has been reported. We sequenced 154 MIS-C patients and utilized a novel statistical framework of gene burden analysis, "burdenMC," which identified an enrichment for rare predicted-deleterious variants in BTNL8 (OR = 4.

View Article and Find Full Text PDF

Adrenomyeloneuropathy is a progressive neurodegenerative disease caused by pathogenic variants in the gene, resulting in very-long-chain fatty acid (VLCFA) accumulation that leads to dying-back axonopathy. Our candidate gene therapy, SBT101 (AAV9-human [h]), aims to ameliorate pathology by delivering functional copies of h to the spinal cord. Transduced cells produce functional ABCD1 protein, thereby repairing the underlying biochemical defect.

View Article and Find Full Text PDF

Mediterranean Diet Pattern: Potential Impact on the Different Altered Pathways Related to Cardiovascular Risk in Advanced Chronic Kidney Disease.

Nutrients

October 2024

Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomètiques August Pi i Sunyer (IDIBAPS), 08027 Barcelona, Spain.

Background: Cardiovascular disease (CVD) remains the most common cause of mortality in chronic kidney disease (CKD) patients. Several studies suggest that the Mediterranean diet reduces the risk of CVD due to its influence on endothelial function, inflammation, lipid profile, and blood pressure. Integrating metabolomic and proteomic analyses of CKD could provide insights into the pathways involved in uremia-induced CVD and those pathways modifiable by the Mediterranean diet.

View Article and Find Full Text PDF

Placental epigenetic signatures of maternal distress in glucocorticoid-related genes and newborn outcomes: A study of Spanish primiparous women.

Eur Neuropsychopharmacol

January 2025

Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona, Spain; Biomedicine Institute of the University of Barcelona (IBUB), Barcelona, Spain; Health Institut Carlos III, Network Centre for Biomedical Research in Mental Health (CIBER of Mental Health, CIBERSAM), Madrid, Spain. Electronic address:

Article Synopsis
  • Maternal stress during pregnancy can influence the health of offspring, raising the risk for neuropsychiatric disorders through changes in placental DNA methylation.
  • The study examined the effects of maternal stress on DNA methylation of cortisol-regulating genes (NR3C1, FKBP5, HSD11B2) using placental samples from 45 mother-infant pairs divided by stress exposure levels.
  • Results indicated that higher maternal cortisol in early pregnancy was linked to specific DNA methylation changes in the NR3C1 and FKBP5 genes, but no direct connection to newborn neurodevelopment was established, underscoring the need for more research on placental epigenetics.
View Article and Find Full Text PDF

Mapping the diagnostic odyssey of congenital disorders of glycosylation (CDG): insights from the community.

Orphanet J Rare Dis

November 2024

UCIBIO - Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal.

Background: Congenital disorders of glycosylation (CDG) are a group of rare metabolic diseases with heterogeneous presentations, leading to substantial diagnostic challenges, which are poorly understood. Therefore, this study aims to elucidate this diagnostic journey by examining families' and professionals' experiences.

Results And Discussion: A questionnaire was designed for CDG families and professionals, garnering 160 and 35 responses, respectively.

View Article and Find Full Text PDF

Introduction: Extraction of Doppler-based measurements from feto-placental Doppler images is crucial in identifying vulnerable new-borns prenatally. However, this process is time-consuming, operator dependent, and prone to errors.

Methods: To address this, our study introduces an artificial intelligence (AI) enabled workflow for automating feto-placental Doppler measurements from four sites (i.

View Article and Find Full Text PDF

Systematic review of thyroid function in NKX2-1-related disorders: Treatment and follow-up.

PLoS One

October 2024

Department of Child Neurology, Movement Disorders Unit, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.

Article Synopsis
  • NKX2-1 is a critical transcription factor linked to rare disorders that cause thyroid, lung, and brain issues, with early diagnosis being key for effective treatment.
  • This systematic review analyzes the effectiveness of Levothyroxine (LT4) treatment for NKX2-1-related disorders, focusing on congenital hypothyroidism, treatment initiation, and dosage variations.
  • Findings reveal that congenital hypothyroidism is common in these patients, yet LT4 is initiated in only 10%, with significant reliance on age at diagnosis affecting treatment outcomes.
View Article and Find Full Text PDF

Developmental and epileptic encephalopathy 56 due to YWHAG variants: 12 new cases and review of the literature.

Eur J Paediatr Neurol

November 2024

Movement Disorders Unit, Pediatric Neurology Department, Institut de Recerca, Hospital Sant Joan de Déu Barcelona, Barcelona, Spain; European Reference Network for Rare Neurological Diseases (ERN-RND), Barcelona, Spain; U-703 Centre for Biomedical Research on Rare Diseases (CIBER-ER), Instituto de Salud Carlos III, Barcelona, Spain. Electronic address:

Background And Objectives: Developmental and epileptic encephalopathy 56 (DEE-56) is caused by pathogenic variants in YWHAG and is characterized by early-onset epilepsy and neurodevelopmental delay. This study reports on a cohort of DEE-56 individuals, correlating antiseizure medication usage and comorbidities, to aid in understanding disease evolution.

Methods: We analyzed data from thirty-nine individuals aged 3-40 years with YWHAG variants, including 12 previously unreported individuals (2 of these with recurrent distal 7q11.

View Article and Find Full Text PDF
Article Synopsis
  • The study focused on establishing continuous reference intervals for cerebrospinal fluid (CSF) biomarkers homovanillic acid (HVA) and 5-hydroxyindoleacetic acid (5-HIAA), which are important for diagnosing neurological diseases related to dopamine and serotonin.
  • Utilizing data from a large cohort of pediatric patients, researchers created age-specific models to define these intervals more accurately, addressing the issue of not having healthy control groups.
  • The results showed that the continuous reference intervals reduced the number of secondary deficiencies identified and found no significant links between HVA and 5-HIAA levels and the effects of antiepileptic or neuroleptic medications, indicating that these biomarkers may not always correlate with neurological disorders.
View Article and Find Full Text PDF

Background And Purpose: Sotos syndrome is a rare autosomal dominant condition caused by pathogenic mutations in the gene that presents with craniofacial dysmorphism, overgrowth, seizures, and neurodevelopmental delay. Macrocephaly, ventriculomegaly, and corpus callosal dysmorphism are typical neuroimaging features that have been described in the medical literature. The purpose of this study was to expand on the neuroimaging phenotype by detailed analysis of a large cohort of patients with genetically proved Sotos syndrome.

View Article and Find Full Text PDF

Introduction: We investigated whether structured maternal lifestyle interventions based on Mediterranean diet or stress reduction influence fetal-infant neurodevelopment detected by detailed fetal neurosonography and Ages and Stages Questionnaires 3rd edition (ASQ) at 12 months old.

Methods: This was a secondary analysis of a randomized clinical trial (2017-2020), including 1,221 singleton pregnancies at high risk for small-for-gestational age. Participants were randomized into three groups at 19-23 weeks' gestation: Mediterranean diet intervention, stress reduction program, or usual care.

View Article and Find Full Text PDF

Background: Children with genetic conditions are at increased risk for mental health and neurodevelopmental problems, often accompanied by significant parental distress. Genetic and family factors can impact children and parents' mental health. Early parenting interventions, like the Incredible Years® programs, have demonstrated to improve parental distress and children's mental health.

View Article and Find Full Text PDF

Systematic review of thyroid function in NKX2-1-related disorders: Screening and diagnosis.

PLoS One

July 2024

Department of Child Neurology, Movement Disorders Unit, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.

Article Synopsis
  • * A systematic review analyzed 1012 studies, ultimately including 46 that focused on screening and diagnosing endocrine issues related to NKX2-1-RD in patients, revealing that 45% had congenital hypothyroidism.
  • * The findings indicated inconsistent diagnostic practices, with a significant number of patients diagnosed in adulthood and a need for standardized screening and diagnostic procedures for better management of endocrine disorders associated with NKX2-1-RD.
View Article and Find Full Text PDF

Improving paediatric movement disorders care: Insights on rating scales utilization and clinical practice.

Eur J Paediatr Neurol

September 2024

Department of Paediatric Neurology, Hospital Sant Joan de Déu, Barcelona, Spain; U-703 Centre for Biomedical Research on Rare Diseases (CIBER-ER), Instituto de Salud Carlos III, Barcelona, Spain. Electronic address:

Aim: This exploratory study evaluates rating scale usage by experts from the European Reference Network for Rare Neurological Diseases (ERN-RND) for paediatric MD, considering factors like diagnosis, intellectual disability, age, and transition to adult care. The aim is to propose a preliminary framework for consistent application.

Methods: A multicentre survey among 25 ERN-RND experts from 10 European countries examined rating scale usage in paediatric MD, categorizing MD into acute, non-progressive, and neurodegenerative types.

View Article and Find Full Text PDF

Insights from European Reference Network for rare neurological disorders study surveys on diagnosis, treatment, and management of NKX2-1-related disorders.

Eur J Paediatr Neurol

July 2024

Department of Paediatric Neurology, Hospital Sant Joan de Déu, Barcelona, Spain; Centre for Rare Diseases and Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen, Calwerstr. 7, 72076, Tübingen, Germany; U-703 Centre for Biomedical Research on Rare Diseases (CIBER-ER), Instituto de Salud Carlos III, Barcelona, Spain. Electronic address:

Background: NKX2-1-related disorder (NKX2-1-RD) is a rare disease characterized by a triad of primary hypothyroidism, neonatal respiratory distress, and neurological features, including chorea.

Objective: This study aimed to identify discrepancies in the management of NKX2-1-RD among European Union (EU) specialists.

Methods: The ERN-RND Chorea & Huntington disease group designed a survey to conduct a cross-sectional multicenter study on the management of NKX2-1-RD.

View Article and Find Full Text PDF