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1.
Hum Genet ; 143(11): 1353-1362, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-39367212

RESUMO

Biallelic variants in the ERLIN1 gene were recently reported as the cause of two motor neuron degeneration diseases, SPG62 and a recessive form of amyotrophic lateral sclerosis. However, only 12 individuals from five pedigrees have been identified so far. Thus, the description of the disease remains limited. Following the discovery of a homozygous pathogenic variant in a girl with SPG62, presenting with intellectual disability, and epilepsy, we gathered the largest series of SPG62 cases reported so far (13 individuals) to better understand the phenotype associated with ERLIN1. We collected molecular and clinical data for 13 individuals from six families with ERLIN1 biallelic variants. We performed RNA-seq analyses to characterize intronic variants and used Alphafold and a transcripts database to characterize the molecular consequences of the variants. We identified three new variants suspected to alter the bell-shaped ring formed by the ERLIN1/ERLIN2 complex. Affected individuals had childhood-onset paraparesis with slow progression. Six individuals presented with gait ataxia and three had superficial sensory loss. Aside from our proband, none had intellectual disability or epilepsy. Biallelic pathogenic ERLIN1 variants induce a rare, predominantly pure, spastic paraparesis, with possible cerebellar and peripheral nerve involvement.


Assuntos
Paraparesia Espástica , Linhagem , Humanos , Feminino , Masculino , Paraparesia Espástica/genética , Criança , Adolescente , Adulto , Proteínas de Membrana/genética , Alelos , Fenótipo , Mutação , Pré-Escolar , Adulto Jovem , Deficiência Intelectual/genética
2.
J Bacteriol ; 205(9): e0016523, 2023 09 26.
Artigo em Inglês | MEDLINE | ID: mdl-37695858

RESUMO

Streptomycin (Sm) is a commonly used antibiotic for its efficacy against diverse bacteria. The plant pathogen Agrobacterium fabrum is a model for studying pathogenesis and interkingdom gene transfer. Streptomycin-resistant variants of A. fabrum are commonly employed in genetic analyses, yet mechanisms of resistance and susceptibility to streptomycin in this organism have not previously been investigated. We observe that resistance to a high concentration of streptomycin arises at high frequency in A. fabrum, and we attribute this trait to the presence of a chromosomal gene (strB) encoding a putative aminoglycoside phosphotransferase. We show how strB, along with rpsL (encoding ribosomal protein S12) and rsmG (encoding a 16S rRNA methyltransferase), modulates streptomycin sensitivity in A. fabrum. IMPORTANCE The plant pathogen Agrobacterium fabrum is a widely used model bacterium for studying biofilms, bacterial motility, pathogenesis, and gene transfer from bacteria to plants. Streptomycin (Sm) is an aminoglycoside antibiotic known for its broad efficacy against gram-negative bacteria. A. fabrum exhibits endogenous resistance to somewhat high levels of streptomycin, but the mechanism underlying this resistance has not been elucidated. Here, we demonstrate that this resistance is caused by a chromosomally encoded streptomycin-inactivating enzyme, StrB, that has not been previously characterized in A. fabrum. Furthermore, we show how the genes rsmG, rpsL, and strB jointly modulate streptomycin susceptibility in A. fabrum.


Assuntos
Agrobacterium , Estreptomicina , Estreptomicina/farmacologia , RNA Ribossômico 16S , Antibacterianos/farmacologia
3.
Neuropediatrics ; 52(3): 212-218, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33578444

RESUMO

Emerging research has demonstrated that anti-myelin oligodendrocyte associated disorders (MOG-AD) are associated with a less severe clinical course than demyelinating conditions associated with the presence of aquaporin-4 antibodies. While a heterogeneity of neuropsychological outcomes in pediatric demyelinating conditions have been described in the literature, no studies to date have investigated the neuropsychological sequelae of pediatric MOG-AD specifically. The objective of the present case series was to describe the clinical and neuropsychological phenotypes of seven pediatric patients (ages 3-15 years) with MOG-AD of different diagnoses (e.g., acute disseminated encephalomyelitis, optic neuritis, multiple sclerosis, and neuromyelitis spectrum disorders). Neuropsychological outcomes were evaluated by retrospective chart review. Results indicated largely intact neuropsychological profiles in five of the seven patients, with mild weaknesses in attention, executive functioning, processing speed, visual-motor/fine-motor skills, and mood concerns being observed. Two patients with a Kurtzke Extended Disability Status Scale of 0 still demonstrated findings on neuropsychological testing. Of the other two patients, one demonstrated higher levels of impairment in the context of a complex medical history and premorbid learning difficulties, while the other demonstrated declines in functioning likely associated with an earlier age of onset. Findings suggest that neuropsychological outcomes may be correspondingly less severe in this population compared with what has previously been described in the pediatric demyelinating disease literature. This differential impact may contribute to the heterogeneity of neuropsychological outcomes found in previous studies, and future research should separate participants with myelin oligodendrocyte antibodies given the difference in clinical course, treatment outcomes, and neuropsychological sequelae.


Assuntos
Encefalomielite Aguda Disseminada , Neuromielite Óptica , Autoanticorpos , Criança , Humanos , Glicoproteína Mielina-Oligodendrócito , Fenótipo , Estudos Retrospectivos
4.
Arch Phys Med Rehabil ; 102(3): 406-412, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33058859

RESUMO

OBJECTIVES: To describe the immunotherapy and pharmacologic treatments administered to pediatric patients with N-methyl-D-aspartate receptor encephalitis (NMDARE) during inpatient rehabilitation as well as to examine clinical and demographic variables associated with early functional outcomes. DESIGN: Retrospective chart review and post hoc analysis. SETTING: Pediatric inpatient rehabilitation unit. PARTICIPANTS: Pediatric patients (N=26; mean age, 10.79±5.17y) admitted to an inpatient rehabilitation unit with a confirmed diagnosis of NMDARE. INTERVENTIONS: Inpatient rehabilitation; pharmacologic treatments. MAIN OUTCOME MEASURE: FIM for Children (WeeFIM) Developmental Functional Quotient (DFQ). RESULTS: All patients received first-line immunotherapies to treat NMDARE, and 69% also received second-line immunotherapies. Patients were prescribed an average of 8 medications for symptom management (range, 3-15 per patient), most often for the treatment of agitation (100%), psychiatric symptoms (92%), and seizures (65%). Sixty-five percent of patients demonstrated an improvement in Total WeeFIM DFQ over the course of inpatient rehabilitation, with 35% demonstrating limited to no change in Total WeeFIM DFQ ("unfavorable early outcome"). Those with unfavorable early outcome were significantly younger than those showing more favorable outcome. Pharmacologic treatment for seizures, movement disorders, and decreased arousal or level of consciousness were each associated with unfavorable early outcome independent of age differences. CONCLUSION: Findings highlight the symptomatic heterogeneity and polypharmacy involved in the care and treatment of patients with NMDARE, with patients receiving a variety of immunotherapies and medications for symptom management. The presence of (and treatment for) seizures, movement disorders, and deteriorated neurologic status may each be associated with poor early outcomes in this population. Further investigation is needed to better classify presentations and treatments for this disease and to determine how differences are associated with long-term outcomes.


Assuntos
Encefalite Antirreceptor de N-Metil-D-Aspartato/tratamento farmacológico , Encefalite Antirreceptor de N-Metil-D-Aspartato/reabilitação , Adolescente , Criança , Pré-Escolar , Avaliação da Deficiência , Humanos , Centros de Reabilitação , Estudos Retrospectivos
5.
Pediatr Blood Cancer ; 61(1): 40-5, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23956130

RESUMO

BACKGROUND: Survivors of childhood brain tumors are at increased risk for neurocognitive impairments, including deficits in abilities supported by frontal brain regions. Catechol-O-methyltransferase (COMT) metabolizes dopamine in the prefrontal cortex, with the Met allele resulting in greater dopamine availability and better performance on frontally mediated tasks compared to the Val allele. Given the importance of identifying resiliency factors against the emergence of cognitive late effects, the current study examined the relationship between COMT genotype and working memory performance among childhood brain tumor survivors. PROCEDURE: Children treated for a brain tumor with conformal radiation therapy (N = 50; mean age at irradiation = 7.41 ± 3.41; mean age at assessment = 13.18 ± 2.88) were administered two computerized measures of working memory (self-ordered search verbal and object tasks). Buccal (cheek) swabs were used to provide tissue from which DNA was extracted. RESULTS: Findings revealed an association between COMT genotype and performance on the self-ordered verbal (P = 0.03) but not object task (P = 0.33). Better performance was found for the Met/Val group compared to either Met/Met or Val/Val. CONCLUSIONS: COMT may indicate a potential resiliency factor against neurocognitive effects of cancer and its treatment; however, there is a need for replication with larger samples of childhood brain tumor survivors.


Assuntos
Neoplasias Encefálicas/genética , Neoplasias Encefálicas/radioterapia , Catecol O-Metiltransferase/genética , Irradiação Craniana/efeitos adversos , Memória de Curto Prazo/efeitos da radiação , Polimorfismo de Nucleotídeo Único , Adolescente , Criança , Pré-Escolar , Feminino , Genótipo , Humanos , Masculino , Testes Neuropsicológicos , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Sobreviventes
6.
Pediatr Neurol ; 161: 113-116, 2024 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-39368246

RESUMO

BACKGROUND: Autoimmune encephalitis (AE) can present as first-episode psychosis (FEP) in children. An FEP diagnostic algorithm has been proposed, but how this algorithm applies to children is unknown. We assess the FEP diagnostic algorithm in children with FEP. METHODS: The FEP algorithm was applied to a retrospective cohort of children with FEP without other neurological symptoms. RESULTS: Twenty-four patients were included, with five AE (anti-N-methyl-d-aspartate receptor encephalitis) and 19 non-AE patients (12 primary psychiatric, two headaches, mycoplasma-related encephalitis, post-coronavirus disease 2019 encephalitis, drug reaction with eosinophilia and systemic symptoms [DRESS] syndrome, cobalamin C deficiency, and two unknown). Some non-AE patients (five of 19 = 26%) received immunotherapies, with symptom resolution in one of five (20%) with immunotherapy and in four of 14 (29%) without immunotherapy. The FEP algorithm recommended cerebrospinal fluid (CSF) testing in all (five of five = 100%) patients with AE and in six of 19 (32%) non-AE patients, resulting in 100% sensitivity (95% confidence interval [CI]: 100% to 100%) and 45.5% specificity (95% CI: 16% to 75%), with a negative predictive value of 100% (95% CI: 100% to 100%). CONCLUSIONS: FEP can occur in children from different causes, including AE and metabolic conditions. Evaluation of FEP should be broad, especially without CSF evidence of inflammation. The FEP algorithm is useful to assess patients who would benefit from CSF testing and should be assessed in larger cohorts.

7.
bioRxiv ; 2024 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-39386543

RESUMO

The neural crest generates numerous cell types, but conflicting results leave developmental origins unresolved. Here using somatic mosaic variants as cellular barcodes, we infer embryonic clonal dynamics of trunk neural crest, focusing on the sensory and sympathetic ganglia. From three independent adult neurotypical human donors, we identified 1,278 mosaic variants using deep whole-genome sequencing, then profiled allelic fractions in 187 anatomically dissected ganglia. We found a massive rostrocaudal spread of progenitor clones specific to sensory or sympathetic ganglia, which unlike in the brain, showed robust bilateral distributions. Computational modeling suggested neural crest progenitor fate specification preceded delamination from neural tube. Single-cell multiomic analysis suggested both neurons and glia contributed to the rostrocaudal clonal organization. CRISPR barcoding in mice and live imaging in quail embryos confirmed these clonal dynamics across multiple somite levels. Our findings reveal an evolutionarily conserved clonal spread of cells populating peripheral neural ganglia.

8.
Science ; 384(6695): 584-590, 2024 05 03.
Artigo em Inglês | MEDLINE | ID: mdl-38696583

RESUMO

Meningomyelocele is one of the most severe forms of neural tube defects (NTDs) and the most frequent structural birth defect of the central nervous system. We assembled the Spina Bifida Sequencing Consortium to identify causes. Exome and genome sequencing of 715 parent-offspring trios identified six patients with chromosomal 22q11.2 deletions, suggesting a 23-fold increased risk compared with the general population. Furthermore, analysis of a separate 22q11.2 deletion cohort suggested a 12- to 15-fold increased NTD risk of meningomyelocele. The loss of Crkl, one of several neural tube-expressed genes within the minimal deletion interval, was sufficient to replicate NTDs in mice, where both penetrance and expressivity were exacerbated by maternal folate deficiency. Thus, the common 22q11.2 deletion confers substantial meningomyelocele risk, which is partially alleviated by folate supplementation.


Assuntos
Deleção Cromossômica , Cromossomos Humanos Par 22 , Meningomielocele , Animais , Feminino , Humanos , Masculino , Camundongos , Cromossomos Humanos Par 22/genética , Síndrome de DiGeorge/genética , Sequenciamento do Exoma , Ácido Fólico/administração & dosagem , Deficiência de Ácido Fólico/complicações , Deficiência de Ácido Fólico/genética , Meningomielocele/epidemiologia , Meningomielocele/genética , Penetrância , Disrafismo Espinal/genética , Risco , Proteínas Adaptadoras de Transdução de Sinal/genética
9.
J Neurooncol ; 114(3): 339-44, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23813229

RESUMO

Diffuse intrinsic pontine glioma (DIPG) is the deadliest central nervous system tumor in children. The survival of affected children has remained poor despite treatment with radiation therapy (RT) with or without chemotherapy. We reviewed the medical records of all surviving patients with DIPG treated at our institution between October 1, 1992 and May 31, 2011. Blinded central radiologic review of the magnetic resonance imaging at diagnosis of all surviving patients and 15 controls with DIPG was performed. All surviving patients underwent neurocognitive assessment during follow-up. Five (2.6 %) of 191 patients treated during the study period were surviving at a median of 9.3 years from their diagnosis (range 5.3-13.2 years). Two patients were younger than 3 years, one lacked signs of pontine cranial nerve involvement, and three had longer duration of symptoms at diagnosis. One patient had a radiologically atypical tumor and one had a tumor originating in the medulla. All five patients received RT. Chemotherapy was variable among these patients. Neurocognitive assessments were obtained after a median interval of 7.1 years. Three of four patients who underwent a detailed evaluation showed cognitive function in the borderline or mental retardation range. Two patients experienced disease progression at 8.8 and 13 years after diagnosis. A minority of children with DIPG experienced long-term survival with currently available therapies. These patients remained at high risk for tumor progression even after long follow-ups. Four of our long-term survivors had clinical and radiologic characteristics at diagnosis associated with improved outcome.


Assuntos
Neoplasias do Tronco Encefálico/mortalidade , Glioma/mortalidade , Sobreviventes , Adolescente , Neoplasias do Tronco Encefálico/diagnóstico por imagem , Neoplasias do Tronco Encefálico/terapia , Criança , Pré-Escolar , Terapia Combinada , Feminino , Seguimentos , Glioma/diagnóstico por imagem , Glioma/terapia , Humanos , Lactente , Imageamento por Ressonância Magnética , Masculino , Prognóstico , Radiografia , Taxa de Sobrevida
10.
J Int Neuropsychol Soc ; 19(4): 380-9, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23351399

RESUMO

Childhood brain tumor survivors are at increased risk for neurocognitive impairments, including working memory (WM) problems. WM is typically assessed using performance measures. Little is known about the value of parent ratings for identifying WM difficulties, the relationship between rater and performance measures, or predictors of parent-reported WM problems in this population. Accordingly, the current study examined the utility of parent report in detecting WM difficulties among childhood brain tumor survivors treated with conformal radiation therapy (n = 50) relative to siblings (n = 40) and solid tumor survivors not receiving central nervous system-directed therapy (n = 40). Parents completed the Behavior Rating Inventory of Executive Function (BRIEF). Participants were administered WM measures (digit span, self-ordered search tasks). Findings revealed parents rated brain tumor survivors as having significantly more WM problems (p < .01) compared to controls. However, the BRIEF-WM scale demonstrated poor sensitivity and specificity for detecting performance-based problems. Significant, albeit modest, correlations were found between the BRIEF-WM scale and performance measures (r = -.24-.22; p < .05) for the combined group. Age at testing, socioeconomic status, and IQ were significant predictors of parent reported WM problems. Rater and performance measures offer complimentary yet different information in assessing WM, which reiterates the importance of using both within the context of clinical assessment.


Assuntos
Neoplasias Encefálicas/complicações , Transtornos da Memória/diagnóstico , Transtornos da Memória/etiologia , Memória de Curto Prazo/fisiologia , Pais/psicologia , Sobreviventes/psicologia , Adolescente , Análise de Variância , Distribuição de Qui-Quadrado , Criança , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Inventário de Personalidade
11.
J Neuroimmunol ; 376: 578048, 2023 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-36774765

RESUMO

OBJECTIVES: Anti-NMDA receptor autoimmune encephalitis (NMDARE) is a common pediatric encephalitis, resulting in neuropsychiatric symptoms. Predicting severity and course is challenging, with objective cognitive assessments lacking in NMDARE, especially in children. The CASE (Clinical Assessment Scale in Autoimmune Encephalitis) measures severity in autoimmune encephalitis. The CALS (Cognitive and Linguistic Scale) assesses cognitive-linguistic recovery in children with acquired brain injury. This study examines severity and cognitive status in pediatric NMDARE by comparing objectives measures: modified Rankin score (mRS), CASE, and CALS. METHODS: Twenty-one patients were identified via retrospective chart review with a confirmed NMDARE diagnosis (ages of 3-18 years) who required inpatient rehabilitation. The mRS, CASE, and CALS were assessed at admission and discharge. RESULTS: Scores demonstrated improvement from admission to discharge, with variability in individual recovery trajectories. CALS identified three clusters of patients with differential rates of early recovery. CALS <30 was associated with minimal improvement and poor outcomes. CALS ≥30 had a likelihood ratio score of 12.0 to predict improvement. CASE and CALS were moderately correlated, but neither correlated with mRS. DISCUSSION: CALS and CASE appear to be complementary measures for assessing severity and cognitive status in pediatric NMDARE, including those with low responsiveness, with implications for treatment and outcomes.


Assuntos
Encefalite Antirreceptor de N-Metil-D-Aspartato , Humanos , Criança , Pré-Escolar , Adolescente , Encefalite Antirreceptor de N-Metil-D-Aspartato/complicações , Pacientes Internados , Estudos Retrospectivos , Receptores de N-Metil-D-Aspartato , Cognição
12.
Pediatr Clin North Am ; 70(3): 429-444, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37121635

RESUMO

Viral encephalitis and autoimmune encephalitis are currently the most common causes of encephalitis. Determining the causative agent is helpful in initiating medical treatment that may help reduce long-term sequelae. Cerebrospinal fluid, neuroimaging, serologic, and electroencephalogram in combination with clinical manifestations play a role in determining the cause of the encephalitis. Although motor dysfunction tends to improve, there is a significant risk of long-term neurologic and cognitive sequelae. These persistent deficits that occur in childhood indicate the importance for ongoing rehabilitative services to maximize functional skills, improve cognitive deficits, and assist with community integration.


Assuntos
Doenças Autoimunes do Sistema Nervoso , Encefalite , Doença de Hashimoto , Humanos , Criança , Encefalite/diagnóstico , Encefalite/tratamento farmacológico , Progressão da Doença , Doença de Hashimoto/diagnóstico , Doença de Hashimoto/terapia
13.
J Child Neurol ; 38(5): 298-306, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37203168

RESUMO

Background: Rates of sleep problems in children with anti-N-methyl-d-aspartate (NMDA) receptor encephalitis are unknown. Methods: We used a retrospective observational cohort database of children with a diagnosis of NMDA receptor encephalitis at a single freestanding institution. One-year outcomes were assessed with the pediatric modified Rankin Score (mRS), with 0 to 2 as good and 3 or greater as poor outcome. Results: Ninety-five percent (39/41) of children with NMDA receptor encephalitis had sleep dysfunction at onset; 34% (11/32) reported sleep problems at 1 year. Sleep problems at onset and propofol use were not associated with poor outcomes at 1 year. Poor sleep at 1 year correlated with mRS scores (range 2-5) at 1 year. Discussion: High rates of sleep dysfunction occur in children with NMDA receptor encephalitis. Persistent sleep problems at 1 year may correlate with outcomes as assessed by mRS at 1 year. Further studies comparing the relationship of poor sleep with outcomes in NMDA receptor encephalitis are needed.


Assuntos
Encefalite Antirreceptor de N-Metil-D-Aspartato , Distúrbios do Início e da Manutenção do Sono , Transtornos do Sono-Vigília , Criança , Humanos , Encefalite Antirreceptor de N-Metil-D-Aspartato/diagnóstico , Ácido D-Aspártico , N-Metilaspartato , Receptores de N-Metil-D-Aspartato , Estudos Retrospectivos , Sono , Transtornos do Sono-Vigília/complicações
14.
Neurology ; 101(6): e581-e593, 2023 08 08.
Artigo em Inglês | MEDLINE | ID: mdl-37308301

RESUMO

BACKGROUND AND OBJECTIVES: Comprehensive guidelines for the diagnosis, prognosis, and treatment of disorders of consciousness (DoC) in pediatric patients have not yet been released. We aimed to summarize available evidence for DoC with >14 days duration to support the future development of guidelines for children, adolescents and young adults aged 6 months-18 years. METHODS: This scoping review was reported based on Preferred Reporting Items for Systematic reviews and Meta-Analyses-extension for Scoping Reviews guidelines. A systematic search identified records from 4 databases: PubMed, Embase, Cochrane Library, and Web of Science. Abstracts received 3 blind reviews. Corresponding full-text articles rated as "in-scope" and reporting data not published in any other retained article (i.e., no double reporting) were identified and assigned to 5 thematic evaluating teams. Full-text articles were reviewed using a double-blind standardized form. Level of evidence was graded, and summative statements were generated. RESULTS: On November 9, 2022, 2,167 documents had been identified; 132 articles were retained, of which 33 (25%) were published over the past 5 years. Overall, 2,161 individuals met the inclusion criteria; female patients were 527 of 1,554 (33.9%) cases included, whose sex was identifiable. Of 132 articles, 57 (43.2%) were single case reports and only 5 (3.8%) clinical trials; the level of evidence was prevalently low (80/132; 60.6%). Most studies included neurobehavioral measures (84/127; 66.1%) and neuroimaging (81/127; 63.8%); 59 (46.5%) were mainly related to diagnosis, 56 (44.1%) to prognosis, and 44 (34.6%) to treatment. Most frequently used neurobehavioral tools included the Coma Recovery Scale-Revised, Coma/Near-Coma Scale, Level of Cognitive Functioning Assessment Scale, and Post-Acute Level of Consciousness scale. EEG, event-related potentials, structural CT, and MRI were the most frequently used instrumental techniques. In 29/53 (54.7%) cases, DoC improvement was observed, which was associated with treatment with amantadine. DISCUSSION: The literature on pediatric DoCs is mainly observational, and clinical details are either inconsistently presented or absent. Conclusions drawn from many studies convey insubstantial evidence and have limited validity and low potential for translation in clinical practice. Despite these limitations, our work summarizes the extant literature and constitutes a base for future guidelines related to the diagnosis, prognosis, and treatment of pediatric DoC.


Assuntos
Transtornos da Consciência , Estado de Consciência , Adolescente , Humanos , Feminino , Criança , Transtornos da Consciência/diagnóstico , Transtornos da Consciência/terapia , Coma , Prognóstico , Ensaios Clínicos Controlados Aleatórios como Assunto
15.
Child Neuropsychol ; 29(2): 299-320, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-35726723

RESUMO

Neuropsychologists working in a pediatric neurorehabilitation setting provide care for children and adolescents with acquired brain injuries (ABI) and play a vital role on the interdisciplinary treatment team. This role draws on influences from the field of clinical neuropsychology and its pediatric subspecialty, as well as rehabilitation psychology. This combination of specialties is uniquely suited for working with ABI across the continuum of recovery. ABI recovery often involves a changing picture that spans across stages of recovery (e.g., disorders of consciousness, confusional state, acute cognitive impairment), where each stage presents with distinctive characteristics that warrant a specific evidence-based approach. Assessment and intervention are used reciprocally to inform diagnostics, treatment, and academic planning, and to support patient and family adjustment. Neuropsychologists work with the interdisciplinary teams to collect and integrate data related to brain injury recovery and use this data for treatment planning and clinical decision making. These approaches must often be adapted and adjusted in real time as patients recover, demanding a dynamic expertise that is currently not supported through formal training curriculum or practice guidelines. This paper outlines the roles and responsibilities of pediatric rehabilitation neuropsychologists across the stages of ABI recovery with the goal of increasing awareness in order to continue to develop and formalize this role.


Assuntos
Lesões Encefálicas , Neuropsicologia , Adolescente , Humanos , Criança , Lesões Encefálicas/complicações , Motivação
16.
PLoS One ; 18(1): e0279936, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36598925

RESUMO

The genetic and molecular basis of flagellar motility has been investigated for several decades, with innovative research strategies propelling advances at a steady pace. Furthermore, as the phenomenon is examined in diverse bacteria, new taxon-specific regulatory and structural features are being elucidated. Motility is also a straightforward bacterial phenotype that can allow undergraduate researchers to explore the palette of molecular genetic tools available to microbiologists. This study, driven primarily by undergraduate researchers, evaluated hundreds of flagellar motility mutants in the Gram-negative plant-associated bacterium Agrobacterium fabrum. The nearly saturating screen implicates a total of 37 genes in flagellar biosynthesis, including genes of previously unknown function.


Assuntos
Agrobacterium , Proteínas de Bactérias , Proteínas de Bactérias/genética , Agrobacterium/genética , Flagelos/metabolismo , Regulação Bacteriana da Expressão Gênica
17.
J Int Neuropsychol Soc ; 18(6): 996-1005, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22691544

RESUMO

While longitudinal studies of children treated for brain tumors have consistently revealed declines on measures of intellectual functioning, greater specification of cognitive changes following treatment is imperative for isolating vulnerable neural systems and developing targeted interventions. Accordingly, this cross-sectional study evaluated the performance of childhood brain tumor survivors (n = 50) treated with conformal radiation therapy, solid tumor survivors (n = 40) who had not received central nervous system (CNS) -directed therapy, and healthy sibling controls (n = 40) on measures of working memory [Digit Span and computerized self-ordered search (SOS) tasks]. Findings revealed childhood brain tumor survivors were impaired on both traditional [Digit Span Backward- F(2,127) = 5.98; p < .01] and experimental [SOS-Verbal- F(2,124) = 4.18; p < .05; SOS-Object- F(2,126) = 5.29; p < .01] measures of working memory, and performance on working memory measures correlated with intellectual functioning (Digit Span Backward- r = .45; p < .0001; SOS- r = -.32 to -.26; p < .01). Comparison of performance on working memory tasks to recognition memory tasks (computerized delayed match-to-sample) offered some support for greater working memory impairment. This pattern of findings is consistent with vulnerability in functional networks that include prefrontal brain regions and has implications for the clinical management of children with brain tumors.


Assuntos
Neoplasias Encefálicas/complicações , Deficiências do Desenvolvimento/etiologia , Transtornos da Memória/etiologia , Memória de Curto Prazo/fisiologia , Sobrevida , Adolescente , Fatores Etários , Análise de Variância , Neoplasias Encefálicas/mortalidade , Neoplasias Encefálicas/radioterapia , Criança , Estudos Transversais , Feminino , Humanos , Inteligência , Estudos Longitudinais , Masculino , Memória de Curto Prazo/efeitos da radiação , Testes Neuropsicológicos , Estimulação Luminosa , Radioterapia Conformacional , Reconhecimento Psicológico/fisiologia , Reconhecimento Psicológico/efeitos da radiação
18.
Child Neuropsychol ; 28(2): 212-223, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34435553

RESUMO

Anti-N-methyl-d-aspartate receptor encephalitis (ANMDARE) is a neurologic disorder that is becoming more recognized in children and adolescents. Early studies suggested that patients typically recover well, but more recent data suggests that children may experience persistent cognitive deficits, especially in verbal memory and executive functioning. The aims of this study are to evaluate areas of impairment and to characterize neuropsychological outcomes in pediatric patients with ANMDARE. This was a multi-centered retrospective chart review. We identified 23 pediatric patients who were, on average, 18.5 months from diagnosis. Patients underwent comprehensive neuropsychological assessment, including measures of intellectual functioning, memory, reading, verbal fluency, visuomotor skills, attention, and working memory. Caregiver ratings and information regarding resource utilization were also collected (e.g., formal school services, outpatient rehabilitation, psychological support). Neuropsychological impairment index (NPI) scores were calculated for each patient. Neuropsychological outcomes highlighted variability across individuals. Memory and fine motor dexterity were particularly impacted. Almost 90% of caregivers reported more concerns than average on at least one measure of emotional-behavioral, adaptive, or executive functioning. More than two-thirds of the sample were considered impaired based on NPI scores on performance measures. More than three quarters of the sample received outpatient intervention, most often consisting of school-based services. Our findings provide additional quantitative evidence that pediatric patients recovering from ANMDARE demonstrate ongoing cognitive concerns. While most patients experience remarkable recoveries following appropriate diagnosis and treatment, ongoing monitoring and support is recommended over time for these patients.


Assuntos
Encefalite Antirreceptor de N-Metil-D-Aspartato , Transtornos Cognitivos , Adolescente , Criança , Função Executiva , Humanos , Testes Neuropsicológicos , Estudos Retrospectivos
19.
Disabil Rehabil ; 44(7): 1035-1041, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-32649219

RESUMO

OBJECTIVE: Traumatic brain injury (TBI) is the leading cause of morbidity and mortality in children and adolescents. This study examines the early cognitive-linguistic recovery of pediatric patients who sustained TBI and required inpatient rehabilitation and investigates the contribution of various demographic, clinical, and preinjury factors to recovery. METHODS: A retrospective chart review of children and adolescents, ages 3-20 years, admitted to an inpatient rehabilitation unit. Acute outcomes were assessed at admission and discharge using the WeeFIM and CALS. Premorbid measures of behavioral and emotional functioning were also collected. RESULTS: One hundred and one children and adolescents (mean age = 12.31, SD = 4.46) diagnosed with TBI requiring inpatient rehabilitation were included. Patients displayed significant improvements on cognitive-linguistic skills and functional independence between admission and discharge, with medium to large effect sizes. Premorbid behavioral-emotional functioning was not found to be associated with early cognitive recovery. CONCLUSION: Results suggest that significant functional improvements can be expected for pediatric patients with TBI during inpatient rehabilitation. Consistent with previous literature, injury severity was significantly related to acute outcomes. In conjunction with the WeeFIM, the CALS appears to be a meaningful complement for assessing and monitoring cognitive-linguistic skills during inpatient rehabilitation.Implications for RehabiliationOur study provides support for the utility of the CALS to assess cognitive recovery during inpatient rehabilitation following moderate to severe TBI.Injury severity and not pre-injury functioning or demographic variables was related to worse scores on the CALS at discharge.Using a measure sensitive to change over admission, such as the CALS, can inform treatment planning.


Assuntos
Lesões Encefálicas Traumáticas , Lesões Encefálicas , Adolescente , Adulto , Lesões Encefálicas/reabilitação , Lesões Encefálicas Traumáticas/reabilitação , Criança , Pré-Escolar , Cognição , Humanos , Pacientes Internados , Recuperação de Função Fisiológica , Estudos Retrospectivos , Adulto Jovem
20.
J Neuroimmunol ; 370: 577931, 2022 09 15.
Artigo em Inglês | MEDLINE | ID: mdl-35872506

RESUMO

Background The neutrophil-to-lymphocyte ratio (NLR) may predict poor outcomes in adult anti-NMDAR encephalitis (NMDARE). The association of NLR with outcomes in pediatric NMDARE was examined. Methods Pediatric NMDARE patients (N = 36) were retrospectively studied. Results High NLR (>6) had a higher proportion of tumors (43% versus 7%) and higher intubation rates (100% versus 38%, p = 0.008). Multivariate analyses showed that high NLR did not correlate with one-year outcomes, inpatient length of stay (LOS), or with tumor, but was associated with intubation and rehabilitation LOS. Conclusion NLR is associated with intubation and rehabilitation LOS. Further investigation is needed for prognostic biomarkers in NMDARE.


Assuntos
Encefalite Antirreceptor de N-Metil-D-Aspartato , Adulto , Encefalite Antirreceptor de N-Metil-D-Aspartato/complicações , Criança , Humanos , Intubação Intratraqueal , Linfócitos , Neutrófilos , Receptores de N-Metil-D-Aspartato , Estudos Retrospectivos
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