Intracellular trafficking involves an intricate machinery of motor complexes, including the dynein complex, to shuttle cargo for autophagolysosomal degradation. Deficiency in dynein axonemal chains, as well as cytoplasmic light and intermediate chains, have been linked with ciliary dyskinesia and skeletal dysplasia. The cytoplasmic dynein 1 heavy chain protein (DYNC1H1) serves as a core complex for retrograde trafficking in neuronal axons. Dominant pathogenic variants in DYNC1H1 have been previously implicated in peripheral neuromuscular disorders (NMD) and neurodevelopmental disorders (NDD). As heavy-chain dynein is ubiquitously expressed, the apparent selectivity of heavy chain dyneinopathy for motor neuronal phenotypes remains currently unaccounted for. Here, we aimed to evaluate the full DYNC1H1-related clinical, molecular and imaging spectrum, including multisystem features and novel phenotypes presenting throughout life. We identified 47 cases from 43 families with pathogenic heterozygous variants in DYNC1H1 (aged 0-59 years) and collected phenotypic data via a comprehensive standardized survey and clinical follow-up appointments. Most patients presented with divergent and previously unrecognized neurological and multisystem features, leading to significant delays in genetic testing and establishing the correct diagnosis. Neurological phenotypes include novel autonomic features, previously rarely described behavioral disorders, movement disorders and periventricular lesions. Sensory neuropathy was identified in nine patients (median age of onset 10.6 years), of which five were only diagnosed after the second decade of life, and three had a progressive age-dependent sensory neuropathy. Novel multisystem features included primary immunodeficiency, bilateral sensorineural hearing loss, organ anomalies and skeletal manifestations, resembling the phenotypic spectrum of other dyneinopathies. We also identified an age-dependent biphasic disease course with developmental regression in the first decade and, following a period of stability, neurodegenerative progression after the second decade of life. Of note, we observed several cases in whom neurodegeneration appeared to be prompted by intercurrent systemic infections with double-stranded DNA viruses (Herpesviridae) or single-stranded RNA viruses (Ross River fever, SARS-CoV-2). Moreover, the disease course appeared to be exacerbated by viral infections regardless of age and/or severity of neurodevelopmental disorder manifestations, indicating a role of dynein in anti-viral immunity and neuronal health. In summary, our findings expand the clinical, imaging and molecular spectrum of pathogenic DYNC1H1 variants beyond motor neuropathy disorders and suggest a life-long continuum and age-related progression due to deficient intracellular trafficking. This study will facilitate early diagnosis and improve counselling and health surveillance of affected patients.
- MeSH
- cytoplazmatické dyneiny * genetika MeSH
- dítě MeSH
- dospělí MeSH
- fenotyp MeSH
- kojenec MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- neurovývojové poruchy genetika MeSH
- novorozenec MeSH
- předškolní dítě MeSH
- Check Tag
- dítě MeSH
- dospělí MeSH
- kojenec MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- novorozenec MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
BACKGROUND: We recently described magnetic resonance imaging (MRI) features of children with transverse myelitis (TM) at first event with important and unique differences depending on the underlying disease entity. OBJECTIVE: To study the resolution of lesions over time in children with TM due to MOG-antibody associated disorders (MOGAD), multiple sclerosis (MS), neuromyelitis optica spectrum disorders (NMOSD) or double seronegative TM. PATIENTS AND METHODS: In this prospective study, 78 children from 29 different medical centres with TM as part of MOGAD (n = 34), MS (n = 20), NMOSD (n = 5) and in double seronegative children (n = 19) were included. A grading system consisting of 4 grades (grade 0 = complete resolution; grade 3 = no resolution at all) was used to compare the degree of lesion resolution over time in the different disease entities. Time to lesion resolution was evaluated by Kaplan-Meier statistics and log-rank test. RESULTS: Significant differences of the interval between first MRI until resolution of lesions were observed between the four disease entities. The most rapid and complete resolution was seen in MOGAD, followed by double seronegative, MS and NMOSD. Median periods until total resolution (grade 0) were 191 days (MOGAD), 750 days (double seronegative), 1117 days (MS), while none of the patients with NMOSD reached a complete resolution during the observation period. The better prognosis of MOGAD compared to MS was independent of sex, age, oligoclonal bands and cell count in the multivariate Cox analysis (P < 0.001). CONCLUSION: Children with TM and antibodies to MOG show a faster resolution of radiological lesions compared to children with MS and NMOSD.
- MeSH
- autoprotilátky krev MeSH
- dítě MeSH
- glykoprotein v myelinu oligodendrocytů imunologie MeSH
- lidé MeSH
- magnetická rezonanční tomografie * MeSH
- mícha diagnostické zobrazování patologie MeSH
- mladiství MeSH
- následné studie MeSH
- neuromyelitis optica * diagnostické zobrazování MeSH
- předškolní dítě MeSH
- prospektivní studie MeSH
- roztroušená skleróza * diagnostické zobrazování patologie MeSH
- transverzální myelitida * diagnostické zobrazování MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- multicentrická studie MeSH
Cíl: Cílem této práce bylo zjistit distribuci a rozsah péče o děti s podezřením na získaný demyelinizační syndrom (zahrnující akutní diseminovanou encefalomyelitidu, klinicky izolovaný syndrom, roztroušenou sklerózu a okruh neuromyelitis optica) a identifikovat oblasti ke zkvalitnění péče v ČR. Soubor a metodika: Elektronické dotazníkové šetření na všech lůžkových pracovištích dětské neurologie (n = 7) a pediatrie (n = 22) na úrovni krajů a fakultních nemocnic. Odpovědi jsme získali ze všech oslovených nemocnic. Výsledky: Na péči se podílí všech sedm pracovišť dětské neurologie a deset pediatrií. Všichni disponují potřebnými diagnostickými možnostmi, alw terapeutické možnosti se liší. Identifikovali jsme konkrétní rozdíly v diagnostickém přístupu – v indikaci a interpretaci vyšetření a ve využití aktuálních diagnostických kritérií. V šesti krajích je péče primárně směřována na lůžka dětské neurologie, v ostatních osmi krajích na lůžka pediatrická s konziliárním dětským neurologem. Složitější případy jsou překládány na dětské neurologie, kde je diagnostický přístup komplexnější a terapeutické možnosti rozsáhlejší. Závěr: Péče o děti se získaným demyelinizačním syndromem je v ČR na vysoké úrovni, ale není standardizována. Nejlépe zajištěná onemocnění jsou RS a okruh neuromyelitis optica, pro která fungují centra vysoce specializované péče. Vzhledem k distribuci péče musí specializovaná edukace cílit i na pediatry a konziliární dětské neurology.
Aim: The aim of this study was to investigate the distribution and extent of healthcare provided to children with a suspected acquired demyelinating syndrome (including acute disseminated encephalomyelitis, clinically isolated syndrome, multiple sclerosis and neuromyelitis optica spectrum disorder) and to identify areas for care improvement in the Czech Republic. Patients and methodology: Electronic questionnaire survey at all inpatient departments of pediatric neurology (N = 7) and pediatric departments (N = 22) at the regional and university hospital level. Responses were obtained from all contacted hospitals. Results: All inpatient departments of pediatric neurology and 10 pediatric departments are involved in the care of patients. All have the necessary diagnostic methods available, but therapeutic options differ. We identified specific differences in the diagnostic approach -in the indication and interpretation of examinations and in the use of current diagnostic criteria. In six regions, care is provided primarily by departments of pediatric neurology. In the remaining eight regions, patients are admitted to pediatric departments with an available pediatric neurology consultant. More complex cases are transferred to pediatric neurology departments, where the diagnostic approach is more comprehensive and the therapeutic options are more extensive. Conclusion: In the Czech Republic, healthcare for children with an acquired demyelinating syndrome is at a high level, but it is not standardized. The most appropriate standard of care is provided in specialized care centers for multiple sclerosis and neuromyelitis optica spectrum disorders. Given the distribution of care, specialized education must also include pediatricians and pediatric neurology consultants.
- MeSH
- demyelinizační nemoci * terapie MeSH
- dítě MeSH
- lidé MeSH
- management nemoci MeSH
- management péče o pacienta * organizace a řízení MeSH
- neuromyelitis optica terapie MeSH
- průzkumy a dotazníky MeSH
- roztroušená skleróza terapie MeSH
- terciární prevence organizace a řízení MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
Fetal intracranial hemorrhage represents a rare event with an estimated prevalence of 1:10 000 pregnancies. We report a patient diagnosed prenatally with intracranial hemorrhage and ventriculomegaly carrying a novel, previously unreported, likely pathogenic variant in COL4A1. At the gestational age of 27 weeks, dilation of lateral ventricles was detected during a routine prenatal ultrasound scan, confirmed by prenatal MRI at 30 + 3 weeks of gestation. Prenatal examinations included amniocentesis with conventional G-band karyotyping and arrayCGH, and maternal testing for TORCH and parvovirus B19 infections. Virtual gene panel based on whole-exome sequencing data was performed postnatally. At the age of 2.5 months, the patient manifested epileptic seizures that remain difficult to control. Postnatal MRI showed partial thalamic fusion and polymicrogyria, in addition to severe enlargement of lateral ventricles, multiple deposits of hemosiderin in cerebral and cerebellar hemispheres, and thin optic nerve and chiasma. Virtual gene panel based on whole-exome sequencing data led to a detection of a de novo previously unreported in-frame deletion NM_001845.5:c.4688_4711del in COL4A1 located in the highly conserved NC1 domain initiating collagen helix assembly. The presented case lies one a more severe end of the COL4A1 mutation-related disease spectrum, manifesting as fetal intracranial bleeding, malformation of cortical development, drug-resistant epilepsy, and developmental delay.
- MeSH
- hydrocefalus * MeSH
- intrakraniální krvácení MeSH
- kojenec MeSH
- kolagen typu IV genetika MeSH
- lidé MeSH
- mutace MeSH
- plod MeSH
- polymikrogyrie * genetika MeSH
- těhotenství MeSH
- Check Tag
- kojenec MeSH
- lidé MeSH
- těhotenství MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- kazuistiky MeSH
- práce podpořená grantem MeSH
OBJECTIVE: The pathophysiological processes leading to epileptogenesis and pharmacoresistance in epilepsy have been the subject of extensive preclinical and clinical research. The main impact on clinical practice is the development of new targeted therapies for epilepsy. We studied the importance of neuroinflammation in the development of epileptogenesis and pharmacoresistance in childhood epilepsy patients. METHODS: A cross-sectional study conducted at two epilepsy centers in the Czech Republic compared 22 pharmacoresistant patients and 4 pharmacodependent patients to 9 controls. We analyzed the ProcartaPlexTM 9-Plex immunoassay panel consisting of interleukin (IL)-6, IL-8, IL-10, IL-18, CXCL10/IP-10, monocyte chemoattractant protein 1 (CCL2/MCP-1), B lymphocyte chemoattractant (BLC), tumor necrosis factor-alpha (TNF-α), and chemokine (C-X3-X motif) ligand 1 (fractalkine/CXC3CL1) to determine their alterations in cerebrospinal fluid (CSF) and blood plasma, concurrently. RESULTS: The analysis of 21 paired CSF and plasma samples in pharmacoresistant patients compared to controls revealed a significant elevation of CCL2/MCP-1 in CSF (p < 0.000512) and plasma (p < 0.00.017). Higher levels of fractalkine/CXC3CL1 were revealed in the plasma of pharmacoresistant patients than in controls (p < 0.0704), and we determined an upward trend in CSF IL-8 levels (p < 0.08). No significant differences in CSF and plasma levels were detected between pharmacodependent patients and controls. CONCLUSION: Elevated CCL2/MCP-1 in CSF and plasma, elevated levels of fractalkine/CXC3CL1 in CSF, and a trend toward elevated IL-8 in the CSF of patients with pharmacoresistant epilepsy indicate these cytokines as potential biomarkers of epileptogenesis and pharmacoresistance. CCL2/MCP-1was detected in blood plasma; this assessment may be easily achieved in clinical practice without the invasiveness of a spinal tap. However, due to the complexity of neuroinflammation in epilepsy, further studies are warranted to confirm our findings.
- MeSH
- Bartterův syndrom * komplikace diagnóza MeSH
- lidé MeSH
- paralýza diagnóza etiologie MeSH
- svalová hypotonie diagnóza etiologie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
This review focused on vaccination in children with movement disorders, including cerebral palsy and the movement disorders triggered by vaccination in children with and without neurological disabilities. The following clinical questions were addressed: 1) Can children with movement disorders be vaccinated? 2) Can vaccination trigger movement disorders in children without neurological disabilities? 3) Can vaccination trigger movement disorders in children with neurological disabilities? and 4) Is there any consensus of care concerning vaccination in children with movement disorders? Following the PRISMA reporting guidelines, 1096 records were identified and 34 relevant papers were included. No evidence that vaccinations are contraindicated for children with movement disorders was noticed. Several reports of neurological adverse events, including movement disorders in children without neurological disabilities after various types of vaccination, were found. The reporting rates were low, the causality was controversial, and patient outcomes were mostly favourable. There was limited (if any) evidence in our search that any vaccination leads to any movement disorder exacerbation. Finally, no generally accepted consensus or standards of care concerning vaccination in patients with movement disorders were found. In summary, we found few precautions for vaccination in this group of patients and concluded that general best practice guidelines for immunization should be followed. In addition, influenza and pneumococcal vaccines are recommended because they can reduce morbidity and mortality in individuals severely affected by movement restrictions.
- MeSH
- chřipka lidská * MeSH
- dítě MeSH
- lidé MeSH
- mozková obrna * komplikace MeSH
- pohybové poruchy * etiologie MeSH
- vakcinace škodlivé účinky MeSH
- vakcíny proti chřipce * MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
Our study presents a novel germline c.1715G>T (p.G572V) mutation in the gene encoding Toll-like receptor 8 (TLR8) causing an autoimmune and autoinflammatory disorder in a family with monozygotic male twins, who suffer from severe autoimmune hemolytic anemia worsening with infections, and autoinflammation presenting as fevers, enteritis, arthritis, and CNS vasculitis. The pathogenicity of the mutation was confirmed by in vitro assays on transfected cell lines and primary cells. The p.G572V mutation causes impaired stability of the TLR8 protein, cross-reactivity to TLR7 ligands and reduced ability of TLR8 to attenuate TLR7 signaling. This imbalance toward TLR7-dependent signaling leads to increased pro-inflammatory responses, such as nuclear factor-κB (NF-κB) activation and production of pro-inflammatory cytokines IL-1β, IL-6, and TNFα. This unique TLR8 mutation with partial TLR8 protein loss and hyperinflammatory phenotype mediated by TLR7 ligands represents a novel inborn error of immunity with childhood-onset and a good response to TLR7 inhibition.
- MeSH
- autoimunitní hemolytická anemie genetika imunologie MeSH
- cytokiny genetika imunologie MeSH
- dvojčata monozygotní MeSH
- HEK293 buňky MeSH
- lidé MeSH
- mutace * MeSH
- posouzení stavu pacienta MeSH
- toll-like receptor 7 genetika imunologie MeSH
- toll-like receptor 8 genetika imunologie MeSH
- zánět genetika imunologie MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- studie na dvojčatech MeSH
- MeSH
- diagnostické techniky molekulární MeSH
- diagnostické techniky neurologické * MeSH
- elektroencefalografie MeSH
- elektromyografie metody MeSH
- epilepsie diagnóza MeSH
- evokované potenciály MeSH
- intraoperační neurofyziologická monitorace MeSH
- lidé MeSH
- mozkomíšní mok MeSH
- neuromuskulární nemoci diagnóza MeSH
- neurozobrazování MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
- MeSH
- autoimunitní nemoci nervového systému * diagnóza terapie MeSH
- cerebelární ataxie diagnóza etiologie MeSH
- demyelinizační autoimunitní nemoci CNS diagnóza farmakoterapie patologie MeSH
- demyelinizační nemoci diagnóza farmakoterapie patologie MeSH
- encefalitida s protilátkami proti NMDA receptorům diagnóza terapie MeSH
- herpetická encefalitida diagnóza etiologie farmakoterapie MeSH
- infekce centrálního nervového systému diagnóza etiologie terapie MeSH
- klíšťová encefalitida diagnóza prevence a kontrola terapie MeSH
- lidé MeSH
- lymská neuroborelióza diagnóza farmakoterapie komplikace MeSH
- meningitida bakteriální diagnóza etiologie farmakoterapie MeSH
- syndrom opsoklonus-myoklonus MeSH
- zánět zrakového nervu diagnóza etiologie terapie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
