1,232 results match your criteria: "Hôpital Universitaire Necker Enfants Malades[Affiliation]"

Objective: Fetal intracranial hemorrhage (FICH) is a rare and potentially deleterious condition. Fetal alloimmune thrombocytopenia and pathogenic variations in COL4A1/A2 genes are well-recognized causes of FICH. However, pathogenic COL4A1/A2 variations are identified in only 20% of fetuses referred for FICH after excluding other known causes, leaving the majority unexplained and making genetic counseling difficult.

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Background And Importance: Prolonged emergency medical services' response times (EMS-RT) are associated with poorer outcomes in out-of-hospital cardiac arrest (OHCA). The patient access time interval (PATI), from vehicle stop until contact with patient, may be increased in areas with low socioeconomic status (SES).

Objectives: The objective of this study is to identify predictors of prolonged EMS-RT intervals, and to evaluate associations with clinical outcomes in OHCAs occurring in the largest metropolitan area in France.

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Patients with pathogenic variants in the gene suffer from severe and recurrent rhabdomyolysis episodes precipitated by fasting. Autophagy functioning was analyzed , in primary skeletal myoblasts from TANGO2 patients, in basal and fasting conditions, and mutations were associated with reduced LC3-II levels upon starvation. In zebrafish larvae, inhibition induced locomotor defects which were exacerbated by exposure to atorvastatin, a compound known to cause rhabdomyolysis.

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We report the case of a 3-year-old asymptomatic girl (12 kg, 96 cm) who was diagnosed with a large iatrogenic left ventricular pseudoaneurysm (LVP) on follow-up ultrasound, 14 months after apical muscular ventricular septal defect (VSD) closure with a 10 mm Amplatzer Muscular VSD occluder (Abbott, USA) due to device erosion. The LVP was successfully occluded using detachable Penumbra coils, with complete thrombo-exclusion confirmed at 12-month follow-up.

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Background: Covered stent correction for a sinus venosus atrial septal defect (SVASD) was first performed in 2009. This innovative approach was initially viewed as experimental and was reserved for highly selected patients with unusual anatomic variants. In 2016, increasing numbers of procedures began to be performed, and in several centers, it is now offered as a standard of care option alongside surgical repair.

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Background: Infective endocarditis (IE) poses significant risks following percutaneous pulmonary valve implantation (PPVI) or surgical replacement (PVR).

Aims: This study evaluates the effectiveness of emergency percutaneous treatment in stabilizing patients with severe right ventricular dysfunction or obstructive cardiac shock, allowing for delayed surgical or percutaneous valve replacement.

Methods: This retrospective study examines 16 patients (age 19.

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Active learning for extracting rare adverse events from electronic health records: A study in pediatric cardiology.

Int J Med Inform

December 2024

Inserm, UMR_S1138, Centre de Recherche des Cordeliers, Sorbonne Université, Paris, France; Inria, équipe HeKA, PariSantéCampus, Paris, France; Service d'informatique biomédicale, Hôpital Necker Enfants Malades, Assistance Publique-Hôpitaux de Paris, F-75015 Paris, France.

Objective: Automate the extraction of adverse events from the text of electronic medical records of patients hospitalized for cardiac catheterization.

Methods: We focused on events related to cardiac catheterization as defined by the NCDR-IMPACT registry. These events were extracted from the Necker Children's Hospital data warehouse.

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Mucormycosis is an emerging, life-threatening human infection caused by fungi of the order Mucorales. Metabolic disorders uniquely predispose an ever-expanding group of patients to mucormycosis via poorly understood mechanisms. Therefore, it is highly likely that uncharacterized host metabolic effectors confer protective immunity against mucormycosis.

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Synchronous bilateral adrenalectomy for ACTH-independent Cushing's syndrome in children: multidisciplinary management.

Eur J Endocrinol

November 2024

Department of Pediatric Surgery and Urology, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, 149 Rue de Sèvres, 75015 Paris, France.

Objective: Adreno CorticoTropic Hormone (ACTH)-independent Cushing's syndrome (CS) in children is very rare but potentially fatal. In bilateral nodular hyperplasia, synchronous bilateral adrenalectomy (SBA) represents the definitive treatment to correct hypercortisolism. We aim to report the multidisciplinary management of this rare condition.

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Glomerular nephropathy resulting from the genetic defects in COL4A3/4/5 genes including the classical Alport syndrome (AS) is the second commonest hereditary kidney disease characterized by persistent haematuria progressing to the need of kidney replacement therapy, frequently associated with sensorineural deafness, and occasionally with ocular anomalies. Diagnosis and management of COL4A3/4/5 glomerulopathy is a great challenge due to its phenotypic heterogeneity, multiple modes of inheritance, variable expressivity, and disease penetrance of individual variants as well as imperfect prognostic and progression factors and scarce and limited clinical trials, especially in children. As a joint initiative of the European Rare Kidney disease reference Network (ERKNet), European Renal Association (ERA Genes&Kidney) and European Society for Paediatric Nephrology (ESPN) Working Group Hereditary Kidney Disorders, a team of experts including adult and paediatric nephrologists, kidney geneticists, audiologists, ophthalmologists and a kidney pathologist were selected to perform a systematic literature review on 21 clinically relevant PICO (Patient or Population covered, Intervention, Comparator, Outcome) questions.

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Context: Several long-acting growth hormone (LAGH) therapies have recently become available, but guidance on their usage in children with growth hormone (GH) deficiency is limited.

Methods: International experts in pediatric endocrinology were invited to join a consensus group based on their expertise in treating children with daily GH and LAGH. The group comprised 11 experts from 10 countries across the world.

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Patients with fatty acid oxidation disorders (FAODs) experience muscle symptoms due to impaired ATP metabolism and the toxicity of accumulated mitochondrial FAO substrates or intermediates, especially during catabolic states. A major issue is the absence of specific and sensible biomarkers to evaluate metabolic equilibrium. The relationship between cardiac output (Q) and oxygen consumption (VO) during incremental exercise (dQ/dVO) provides an indirect surrogate of mitochondrial function.

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Haematopoietic gene therapy of non-conditioned patients with Fanconi anaemia-A: results from open-label phase 1/2 (FANCOLEN-1) and long-term clinical trials.

Lancet

December 2025

Biomedical Innovation Unit, Center for Research on Energy, Environment and Technology (CIEMAT), Madrid, Spain; Biomedical Network Research Center for Rare Diseases (CIBERER), Madrid, Spain; Sanitary Research Institute Fundación Jiménez Díaz (U.A.M), Madrid, Spain. Electronic address:

Background: Allogeneic haematopoietic stem-cell transplantation is the standard treatment for bone marrow failure (BMF) in patients with Fanconi anaemia, but transplantation-associated complications such as an increased incidence of subsequent cancer are frequent. The aim of this study was to evaluate the safety and efficacy of the infusion of autologous gene-corrected haematopoietic stem cells as an alternative therapy for these patients.

Methods: This was an open-label, investigator-initiated phase 1/2 clinical trial (FANCOLEN-1) and long-term follow-up trial (up to 7 years post-treatment) in Spain.

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Insulin-degrading enzyme regulates insulin-directed cellular autoimmunity in murine type 1 diabetes.

Front Immunol

November 2024

Université Paris Cité, Institut National de la Santé et Recherche Médicale (INSERM), Centre National de La Recherche Scientifique (CNRS), Institut Necker Enfants Malades, Paris, France.

Type 1 diabetes results from the destruction of pancreatic beta cells by autoreactive T cells. As an autoantigen with extremely high expression in beta cells, insulin triggers and sustains the autoimmune CD4 and CD8 T cell responses and islet inflammation. We have previously shown that deficiency for insulin-degrading enzyme (IDE), a ubiquitous cytosolic protease with very high affinity for insulin, induces endoplasmic reticulum (ER) stress and proliferation in islet cells and protects non-obese diabetic mice (NOD) from diabetes.

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Biallelic Germline Frameshift Mutations Associated with Isolated Diminished Ovarian Reserve.

Int J Mol Sci

November 2024

Unité de Génétique Moléculaire des Maladies Métaboliques et de la Reproduction, Laboratoire de Référence Pour les Infertilités Génétiques, APHP Hôpitaux Universitaires Paris-Saclay, Faculté de Médecine Paris Saclay, Hôpital Bicêtre, 94275 Le Kremlin-Bicêtre, France.

Article Synopsis
  • Next-generation sequencing (NGS) has helped uncover genetic causes of primary ovarian insufficiency (POI), while the reasons for diminished ovarian reserve (DOR) are less understood.
  • A 14-year-old patient with isolated DOR was found to have two frameshift mutations in the BRCA1 gene, but surprisingly showed no signs of Fanconi anemia (FA).
  • Despite the absence of FA symptoms, the patient's cells exhibited high chromosomal fragility, and studies indicated a shortened version of the BRCA1 protein was produced, suggesting that BRCA1 is crucial for ovarian health and functioning.
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New reference charts for fetal ultrasound corpus callosum length with emphasis on the third trimester.

J Gynecol Obstet Hum Reprod

November 2024

Fetal Ultrasound Department, Centre d'échographie de l'Odéon, Paris, France; Fetal Medicine Department, American Hospital of Paris, Neuilly sur Seine, France; Plateforme LUMIERE, Hôpital universitaire Necker enfants malades, URP 7328 and PACT, affiliated to Imagine Institut, Université de Paris, Faculté de médecine, Paris, France.

Article Synopsis
  • The study aimed to create new reference charts for measuring the length of the fetal corpus callosum (CC) during the third trimester, based on a large sample of healthy fetuses, and establish growth evaluation standards using CC length ratios.
  • Conducted from November 2021 to June 2022 at a specialized fetal ultrasound center, the research involved precise measurements of the CC in fetuses aged 17 to 36 weeks, excluding those with inaccurate gestational ages or high risk of brain abnormalities.
  • Results showed high measurement quality (92.8% accuracy) and established a formula for CC length based on gestational age, with consistent ECOFD/CC and HC/CC ratios, proposing them as additional markers for normal CC
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Beyond genomic studies of congenital heart defects through systematic modelling and phenotyping.

Dis Model Mech

November 2024

MRC National Mouse Genetics Network, Congenital Anomalies Cluster, Harwell, OX11 0RD, UK.

Congenital heart defects (CHDs), the most common congenital anomalies, are considered to have a significant genetic component. However, despite considerable efforts to identify pathogenic genes in patients with CHDs, few gene variants have been proven as causal. The complexity of the genetic architecture underlying human CHDs likely contributes to this poor genetic discovery rate.

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Light transmission aggregometry (LTA) is a method used to investigate platelet functions in platelet-rich plasma (PRP), notably when screening for platelet disorders. Various national guidelines and recommendations help in setting up the LTA test in specialized laboratories. However, due to the nature of the sample matrix and its subsequent specificities, more accurate positions are needed to achieve LTA accreditation according to the standard NF EN ISO 15 189.

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Revisiting diagnostics: immune markers to diagnose invasive pulmonary aspergillosis.

Clin Microbiol Infect

November 2024

Institut Pasteur, Immunobiology of Aspergillus, Université de Paris Cité, Paris, France; Laboratoire de Parasitologie-Mycologie, AP-HP, Hôpital Saint-Louis, Paris, France. Electronic address:

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Article Synopsis
  • - The study compares genotypes between pediatric cardiomyopathy (pCM) and adult-onset cardiomyopathy (aCM) to understand why pCM has earlier onset and differs in severity.
  • - Analysis of 253 pCM patients revealed a higher rate of genetic variants, particularly in restrictive pCM, and identified critical risk factors for adverse outcomes such as early diagnosis and presence of multiple variants.
  • - Genetic testing not only clarified the genetic basis for pCM but also enhanced genetic counseling for families, resulting in cases of prenatal diagnosis.
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The main monogenic causes of pulmonary fibrosis in adults are mutations in telomere-related genes. These mutations may be associated with extrapulmonary signs (hepatic, haematological and dermatological) and typically present radiologically as usual interstitial pneumonia or unclassifiable fibrosis. In children, the monogenic causes of pulmonary fibrosis are dominated by mutations in surfactant-related genes.

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We report on a 7-month-old boy (4.2 kg/60 cm) with severe immunodeficiency disorder and bacterial septicaemia who was referred for an infected atrial thrombus secondary to a jugular central line. The echocardiogram showed a teardrop-shaped thrombus with a wide base adherent to the interatrial wall and a flimsy tail moving freely in the right atrium.

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Retinopathy of prematurity (ROP, ORPHA: 90050) is the main cause of visual impairment in preterm infants and the leading preventable cause of childhood blindness in high- and middle-income countries. However, severe stages of the disease remain rare. While screening recommendations for the disease are well-established in France, management of ROP requiring treatment is less standardized, especially since new therapeutic options have been approval on this indication.

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Objectives: A new form of systemic juvenile idiopathic arthritis (SJIA) with associated lung disease (SJIA-LD) has recently been described. Multiple lines of treatment have failed to yield satisfactory results for this disorder. JAK inhibitors (JAKis) have recently been approved for the treatment of JIA, but clinical evidence of their efficacy in SJIA-LD is still weak.

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Article Synopsis
  • IRAP is an enzyme found in various immune cells, and it helps regulate the body's immune response; its genetic variants are linked to survival rates in septic shock patients.
  • In a study modeling systemic inflammation from gram-negative sepsis using LPS, immune responses were compared between IRAP knockout and wildtype mice.
  • Results showed that IRAP deficiency led to increased activation and pro-inflammatory response in dendritic cells and macrophages, highlighting the enzyme's role in inflammation, which varies by time and sex.
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