Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 129
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Epilepsia ; 65(7): 2017-2029, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38776170

RESUMO

OBJECTIVE: This study was undertaken to assess the utility of the Ages and Stages Questionnaire-3rd Edition (ASQ-3) and the Vineland Adaptive Behavior Scales-2nd Edition (VABS-II) as neurodevelopmental screening tools for infants exposed to antiseizure medications in utero, and to examine their suitability for use in large-population signal generation initiatives. METHODS: Participants were women with epilepsy who were recruited from 21 hospitals in England and Northern Ireland during pregnancy between 2014 and 2016. Offspring were assessed at 24 months old using the Bayley Scales of Infant Development-3rd Edition (BSID-III), the VABS-II, and the ASQ-3 (n = 223). The sensitivity and specificity of the ASQ-3 and VABS-II to identify developmental delay at 24 months were examined, using the BSID-III to define cases. RESULTS: The ASQ-3 identified 65 children (29.1%) as at risk of developmental delay at 24 months using standard referral criteria. Using a categorical approach and standard referral criteria to identify delay in the ASQ-3 and BSID-III at 24 months, the ASQ-3 showed excellent sensitivity (90.9%) and moderate specificity (74.1%). Utilizing different cut-points resulted in improved properties and may be preferred in certain contexts. The VABS-II exhibited the strongest psychometric properties when borderline impairment (>1 SD below the mean) was compared to BSID-III referral data (sensitivity = 100.0%, specificity = 96.6%). SIGNIFICANCE: Both the ASQ-3 and VABS-II have good psychometric properties in a sample of children exposed to antiseizure medications when the purpose is the identification of at-risk groups. These findings identify the ASQ-3 as a measure that could be used effectively as part of a tiered surveillance system for teratogenic exposure by identifying a subset of individuals for more detailed investigations. Although the VABS-II has excellent psychometric properties, it is more labor-intensive for both the research team and participants and is available in fewer languages than the ASQ-3.


Assuntos
Anticonvulsivantes , Deficiências do Desenvolvimento , Epilepsia , Efeitos Tardios da Exposição Pré-Natal , Humanos , Feminino , Anticonvulsivantes/efeitos adversos , Anticonvulsivantes/uso terapêutico , Gravidez , Efeitos Tardios da Exposição Pré-Natal/induzido quimicamente , Efeitos Tardios da Exposição Pré-Natal/diagnóstico , Inquéritos e Questionários , Deficiências do Desenvolvimento/induzido quimicamente , Deficiências do Desenvolvimento/diagnóstico , Pré-Escolar , Epilepsia/tratamento farmacológico , Masculino , Lactente , Pais , Adulto , Complicações na Gravidez/tratamento farmacológico , Sensibilidade e Especificidade , Desenvolvimento Infantil/efeitos dos fármacos
2.
J Int Neuropsychol Soc ; 30(1): 18-26, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37057871

RESUMO

OBJECTIVES: The developmental absence (agenesis) of the corpus callosum (AgCC) is a congenital brain malformation associated with risk for a range of neuropsychological difficulties. Inhibitory control outcomes, including interference control and response inhibition, in children with AgCC are unclear. This study examined interference control and response inhibition: 1) in children with AgCC compared with typically developing (TD) children, 2) in children with different anatomical features of AgCC (complete vs. partial, isolated vs. complex), and 3) associations with white matter volume and microstructure of the anterior (AC) and posterior commissures (PC) and any remnant corpus callosum (CC). METHODS: Participants were 27 children with AgCC and 32 TD children 8-16 years who completed inhibitory control assessments and brain MRI to define AgCC anatomical features and measure white matter volume and microstructure. RESULTS: The AgCC cohort had poorer performance and higher rates of below average performance on inhibitory control measures than TD children. Children with complex AgCC had poorer response inhibition performance than children with isolated AgCC. While not statistically significant, there were select medium to large effect sizes for better inhibitory control associated with greater volume and microstructure of the AC and PC, and with reduced volume and microstructure of the remnant CC in partial AgCC. CONCLUSIONS: This study provides evidence of inhibitory control difficulties in children with AgCC. While the sample was small, the study found preliminary evidence that the AC (f2=.18) and PC (f2=.30) may play a compensatory role for inhibitory control outcomes in the absence of the CC.


Assuntos
Corpo Caloso , Substância Branca , Criança , Humanos , Corpo Caloso/diagnóstico por imagem , Agenesia do Corpo Caloso/complicações , Agenesia do Corpo Caloso/diagnóstico por imagem , Imageamento por Ressonância Magnética , Neuroimagem , Substância Branca/diagnóstico por imagem
3.
Epilepsia ; 64(9): 2454-2471, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37403560

RESUMO

OBJECTIVE: Despite widespread monotherapy use of lamotrigine or levetiracetam during pregnancy, prospectively collected, blinded child development data are still limited. The NaME (Neurodevelopment of Babies Born to Mothers With Epilepsy) Study prospectively recruited a new cohort of women with epilepsy and their offspring for longitudinal follow-up. METHODS: Pregnant women of <21 weeks gestation (n = 401) were recruited from 21 hospitals in the UK. Data collection occurred during pregnancy (recruitment, trimester 3) and at 12 and 24 months of age. The primary outcome was blinded assessment of infant cognitive, language, and motor development on the Bayley Scales of Infant and Toddler Development (3rd edition) at 24 months of age with supplementary parent reporting on the Vinelands Adaptive Behavior Scales (2nd edition). RESULTS: There were 394 live births, with 277 children (70%) completing the Bayley assessment at 24 months. There was no evidence of an association of prenatal exposure to monotherapy lamotrigine (-.74, SE = 2.9, 95% confidence interval [CI] = -6.5 to 5.0, p = .80) or levetiracetam (-1.57, SE = 3.1, 95% CI = -4.6 to 7.7, p = .62) with poorer infant cognition, following adjustment for other maternal and child factors in comparison to nonexposed children. Similar results were observed for language and motor scores. There was no evidence of an association between increasing doses of either lamotrigine or levetiracetam. Nor was there evidence that higher dose folic acid supplementation (≥5 mg/day) or convulsive seizure exposure was associated with child development scores. Continued infant exposure to antiseizure medications through breast milk was not associated with poorer outcomes, but the number of women breastfeeding beyond 3 months was low. SIGNIFICANCE: These data are reassuring for infant development following in utero exposure to monotherapy lamotrigine or levetiracetam, but child development is dynamic, and future follow-up is required to rule out later emerging effects.


Assuntos
Epilepsia , Efeitos Tardios da Exposição Pré-Natal , Lactente , Humanos , Feminino , Gravidez , Lamotrigina/uso terapêutico , Levetiracetam/uso terapêutico , Levetiracetam/farmacologia , Mães , Estudos Prospectivos , Epilepsia/tratamento farmacológico , Anticonvulsivantes/efeitos adversos , Desenvolvimento Infantil , Efeitos Tardios da Exposição Pré-Natal/induzido quimicamente
4.
Cereb Cortex ; 31(2): 1227-1239, 2021 01 05.
Artigo em Inglês | MEDLINE | ID: mdl-33108795

RESUMO

The corpus callosum is the largest white matter pathway in the brain connecting the two hemispheres. In the context of developmental absence (agenesis) of the corpus callosum (AgCC), a proposed candidate for neuroplastic response is strengthening of intrahemispheric pathways. To test this hypothesis, we assessed structural and functional connectivity in a uniquely large cohort of children with AgCC (n = 20) compared with typically developing controls (TDC, n = 29), and then examined associations with neurobehavioral outcomes using a multivariate data-driven approach (partial least squares correlation, PLSC). For structural connectivity, children with AgCC showed a significant increase in intrahemispheric connectivity in addition to a significant decrease in interhemispheric connectivity compared with TDC, in line with the aforementioned hypothesis. In contrast, for functional connectivity, children with AgCC and TDC showed a similar pattern of intrahemispheric and interhemispheric connectivity. In conclusion, we observed structural strengthening of intrahemispheric pathways in children born without corpus callosum, which seems to allow for functional connectivity comparable to a typically developing brain, and were relevant to explain neurobehavioral outcomes in this population. This neuroplasticity might be relevant to other disorders of axonal guidance, and developmental disorders in which corpus callosum alteration is observed.


Assuntos
Agenesia do Corpo Caloso/fisiopatologia , Comportamento Infantil/fisiologia , Corpo Caloso/fisiologia , Rede Nervosa/fisiologia , Plasticidade Neuronal/fisiologia , Adolescente , Agenesia do Corpo Caloso/diagnóstico por imagem , Criança , Comportamento Infantil/psicologia , Estudos de Coortes , Corpo Caloso/diagnóstico por imagem , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Rede Nervosa/diagnóstico por imagem
5.
Aust N Z J Psychiatry ; 56(11): 1491-1502, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-34930045

RESUMO

OBJECTIVE: To control a second-wave COVID-19 outbreak, the state of Victoria in Australia experienced one of the world's first long and strict lockdowns over July-October 2020, while the rest of Australia experienced 'COVID-normal' with minimal restrictions. We (1) investigate trajectories of parent/child mental health outcomes in Victoria vs non-Victoria and (2) identify baseline demographic, individual and COVID-19-related factors associated with mental health trajectories. METHODS: Online community sample of 2004 Australian parents with rapid repeated assessment over 14 time-points over April 2020 to May 2021. Measures assessed parent mental health (Depression, Anxiety and Stress Scales-21), child depression symptoms (13-item Short Mood and Feelings Questionnaire) and child anxiety symptoms (four items from Brief Spence Children's Anxiety Scale). RESULTS: Mental health trajectories shadowed COVID-19 infection rates. Victorians reported a peak in mental health symptoms at the time of the second-wave lockdown compared to other states. Key baseline predictors, including parent and child loneliness (standardized regression coefficient [ß] = 0.09-0.46), parent/child diagnoses (ß = 0.07-0.21), couple conflict (ß = 0.07-0.18) and COVID-19 stressors, such as worry/concern about COVID-19, illness and loss of job (ß = 0.12-0.15), predicted elevated trajectories. Effects of predictors on parent and child mental health trajectories are illustrated in an online interactive app for readers (https://lingtax.shinyapps.io/CPAS_trend/). CONCLUSION: Our findings provide evidence of worse trajectories of parent and child mental health symptoms at a time coinciding with a second COVID-19 outbreak involving strict lockdown in Victoria, compared to non-locked states in Australia. We identified several baseline factors that may be useful in detecting high-risk families who are likely to require additional support early on in future lockdowns.


Assuntos
COVID-19 , Saúde Mental , Criança , Humanos , Controle de Doenças Transmissíveis , Pais/psicologia , Vitória/epidemiologia
6.
Dev Psychobiol ; 64(7): e22306, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36282751

RESUMO

Temperament in early childhood is a good predictor of later personality, behavior, and risk of psychopathology. Variation in temperament can be explained by environmental and biological factors. One biological mechanism of interest is the gut microbiome (GM), which has been associated with mental and physical health. This review synthesized existing literature evaluating the relationship between GM composition and diversity, and temperament in early life. Web of Science, PsycInfo, PubMed, and Scopus were searched, and data were extracted according to PRISMA guidelines. In total, 1562 studies were identified, of which six remained following application of exclusion/inclusion criteria. The findings suggest that there is an association between higher alpha diversity and temperament: greater Surgency/Extraversion and High-Intensity Pleasure in males, and lower Effortful Control in females. Unique community structures (beta diversity) were found for Surgency/Extraversion in males and Fear in females. An emerging pattern of positive temperament traits being associated with GM communities biased toward short-chain fatty acid production from a metabolism based on dietary fiber and complex carbohydrates was observed and is worthy of further investigation. To gain deeper understanding of the relationship, future research should investigate further the functional aspects of the microbiome and the influence of diet.


Assuntos
Microbioma Gastrointestinal , Temperamento , Masculino , Feminino , Humanos , Pré-Escolar , Fibras na Dieta , Fatores Biológicos , Carboidratos
7.
Neuroimage ; 244: 118612, 2021 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-34563681

RESUMO

Paediatric traumatic brain injury (pTBI) results in inconsistent changes to regional morphometry of the brain across studies. Structural-covariance networks represent the degree to which the morphology (typically cortical-thickness) of cortical-regions co-varies with other regions, driven by both biological and developmental factors. Understanding how heterogeneous regional changes may influence wider cortical network organization may more appropriately capture prognostic information in terms of long term outcome following a pTBI. The current study aimed to investigate the relationships between cortical organisation as measured by structural-covariance, and long-term cognitive impairment following pTBI. T1-weighted magnetic resonance imaging (MRI) from n = 83 pTBI patients and 33 typically developing controls underwent 3D-tissue segmentation using Freesurfer to estimate cortical-thickness across 68 cortical ROIs. Structural-covariance between regions was estimated using Pearson's correlations between cortical-thickness measures across 68 regions-of-interest (ROIs), generating a group-level 68 × 68 adjacency matrix for patients and controls. We grouped a subset of patients who underwent executive function testing at 2-years post-injury using a neuropsychological impairment (NPI) rule, defining impaired- and non-impaired subgroups. Despite finding no significant reductions in regional cortical-thickness between the control and pTBI groups, we found specific reductions in graph-level strength of the structural covariance graph only between controls and the pTBI group with executive function (EF) impairment. Node-level differences in strength for this group were primarily found in frontal regions. We also investigated whether the top n nodes in terms of effect-size of cortical-thickness reductions were nodes that had significantly greater strength in the typically developing brain than n randomly selected regions. We found that acute cortical-thickness reductions post-pTBI are loaded onto regions typically high in structural covariance. This association was found in those patients with persistent EF impairment at 2-years post-injury, but not in those for whom these abilities were spared. This study posits that the topography of post-injury cortical-thickness reductions in regions that are central to the typical structural-covariance topology of the brain, can explain which patients have poor EF at follow-up.


Assuntos
Espessura Cortical do Cérebro , Lesões Encefálicas Traumáticas/diagnóstico por imagem , Disfunção Cognitiva/diagnóstico por imagem , Função Executiva/fisiologia , Adolescente , Encéfalo/diagnóstico por imagem , Criança , Pré-Escolar , Feminino , Lobo Frontal/diagnóstico por imagem , Humanos , Masculino
8.
Neuroimage ; 243: 118471, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34455063

RESUMO

In the human brain, the corpus callosum is the major white-matter commissural tract enabling the transmission of sensory-motor, and higher level cognitive information between homotopic regions of the two cerebral hemispheres. Despite developmental absence (i.e., agenesis) of the corpus callosum (AgCC), functional connectivity is preserved, including interhemispheric connectivity. Subcortical structures have been hypothesised to provide alternative pathways to enable this preservation. To test this hypothesis, we used functional Magnetic Resonance Imaging (fMRI) recordings in children with AgCC and typically developing children, and a time-resolved approach to retrieve temporal characteristics of whole-brain functional networks. We observed an increased engagement of the cerebellum and amygdala/hippocampus networks in children with AgCC compared to typically developing children. There was little evidence that laterality of activation networks was affected in AgCC. Our findings support the hypothesis that subcortical structures play an essential role in the functional reconfiguration of the brain in the absence of a corpus callosum.


Assuntos
Agenesia do Corpo Caloso/diagnóstico por imagem , Lateralidade Funcional/fisiologia , Adolescente , Cerebelo/diagnóstico por imagem , Criança , Conectoma , Corpo Caloso/diagnóstico por imagem , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Plasticidade Neuronal , Substância Branca
9.
Pharm Res ; 38(9): 1519-1530, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34528168

RESUMO

PURPOSE: A major difficulty in monoclonal antibody (mAb) therapeutic development is product aggregation. In this study, intermolecular isopeptide bonds in mAb aggregates were characterized for the first time. We aim to propose a mechanism of covalent aggregation in a model antibody using stressed studies at raised temperatures to aid in the understanding of mAb aggregation pathways. METHODS: Aggregate fractions were generated using raised temperature and were purified using size-exclusion chromatography (SEC). The fractions were tryptically digested and characterized using liquid chromatography hyphenated to tandem mass-spectrometry (LC-MS/MS). RESULTS: An increased amount of clipping between aspartic acid and proline in a solvent accessible loop in the constant heavy 2 (CH2) domain of the mAb was observed under these conditions. Detailed peptide mapping revealed 14 isopeptide bonds between aspartic acid at that cleavage site and lysine residues on adjacent antibodies. Two additional isopeptide bonds were identified between the mAb HC N-terminal glutamic acid or a separate aspartic acid to lysine residues on adjacent antibodies. CONCLUSIONS: Inter-protein isopeptide bonds between the side chains of acidic amino acids (aspartate and glutamate) and lysine were characterized for the first time in mAb aggregates. A chemical mechanism was presented whereby spontaneous isopeptide bond formation could be facilitated via either the aspartic acid side chain or C-terminus.


Assuntos
Anticorpos Monoclonais/metabolismo , Peptídeos/metabolismo , Animais , Ácido Aspártico/metabolismo , Células CHO , Linhagem Celular , Cromatografia em Gel/métodos , Cricetulus , Lisina/metabolismo , Prolina/metabolismo , Espectrometria de Massas em Tandem/métodos
10.
Dev Sci ; 24(6): e13126, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34060677

RESUMO

The corpus callosum is the largest white matter pathway connecting homologous structures of the two cerebral hemispheres. Remarkably, children and adults with developmental absence of the corpus callosum (callosal dysgenesis, CD) show typical interhemispheric integration, which is classically impaired in adult split-brain patients, for whom the corpus callosum is surgically severed. Tovar-Moll and colleagues (2014) proposed alternative neural pathways involved in the preservation of interhemispheric transfer. In a sample of six adults with CD, they revealed two homotopic bundles crossing the midline via the anterior and posterior commissures and connecting parietal cortices, and the microstructural properties of these aberrant bundles were associated with functional connectivity of these regions. The aberrant bundles were specific to CD and not visualised in healthy brains. We extended this study in a developmental cohort of 20 children with CD and 29 typically developing controls (TDC). The two anomalous white-matter bundles were visualised using tractography. Associations between structural properties of these bundles and their regional functional connectivity were explored. The proposed atypical bundles were observed in 30% of our CD cohort crossing via the anterior commissure, and in 30% crossing via the posterior commissure (also observed in 6.9% of TDC). However, the structural property measures of these bundles were not associated with parietal functional connectivity, bringing into question their role and implication for interhemispheric functional connectivity in CD. It is possible that very early disruption of embryological callosal development enhances neuroplasticity and facilitates the formation of these proposed alternative neural pathways, but further evidence is needed.


Assuntos
Corpo Caloso , Substância Branca , Adulto , Agenesia do Corpo Caloso , Encéfalo , Criança , Humanos , Vias Neurais
11.
Anal Biochem ; 611: 113953, 2020 12 15.
Artigo em Inglês | MEDLINE | ID: mdl-32946834

RESUMO

Conjugated proteins and enzymes are often formed using N-hydroxysuccinimide (NHS) chemistry, which reacts with free primary amines resulting in a loss of charge and a reduction in isoelectric point (pI). Measurement of the extent of reaction of these conjugates is critical for biopharmaceutical developers. Due to this change in protein charge state, denaturing capillary isoelectric focussing (cIEF) offers a potentially straightforward and convenient approach for extent-of-reaction quantification. Here, we demonstrate the potential of this technique with poly(ethylene glycol) (PEG) conjugates of Erwinia chrysanthemil-asparaginase (ErA). Development of an appropriate sample preparation technique is critical to achieving reproducible cIEF electropherograms, particularly for denaturation-resistant proteins such as ErA, and an emphasis was placed on this during development of the PEG-ErA cIEF method. cIEF electropherograms demonstrating a distribution of PEGylation states in a bell-shaped curve were obtained, and assignment of PEGylation states to these peaks was critical to routine use of the method. The method is sensitive enough to resolve non-lysine adducts of PEG (such as those conjugated to histidine residues) and was shown to give reproducible results over a 2 year period. Biopharmaceutical developers should consider cIEF for extent of reaction monitoring and measurement for conjugates of free amine groups.


Assuntos
Asparaginase , Proteínas de Bactérias , Dickeya chrysanthemi/enzimologia , Polietilenoglicóis , Asparaginase/análise , Asparaginase/química , Proteínas de Bactérias/análise , Proteínas de Bactérias/química , Eletroforese Capilar , Focalização Isoelétrica , Polietilenoglicóis/análise , Polietilenoglicóis/química
12.
Brain Topogr ; 33(2): 267-274, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31865488

RESUMO

Functional magnetic resonance imaging (fMRI) is an established eloquent cortex mapping technique that is now an integral part of the pre-operative work-up in candidates for epilepsy surgery. Emerging evidence in adults with epilepsy suggests that material-specific fMRI paradigms can predict postoperative memory outcomes, however these paradigms are not suitable for children. In pediatric age, the use of memory fMRI paradigms designed for adults is complicated by the effect of developmental stages in cognitive maturation, the impairment experienced by some people with temporal lobe epilepsy (TLE) and the normal representation of memory function during development, which may differ from adults. We present a memory fMRI paradigm designed to activate mesial temporal lobe structures that is brief, independent of reading ability, and therefore a novel candidate for use in children. Data from 33 adults and 19 children (all healthy controls) show that the paradigm captures the expected leftward asymmetry of mesial temporal activation in adults. A more symmetrical pattern was observed in children, consistent with the progressive emergence of hemispheric specialisation across childhood. These data have important implications for the interpretation of presurgical memory fMRI in the pediatric setting. They also highlight the need to carefully consider the impact of cognitive development on fMRI tools used in clinical practice.


Assuntos
Córtex Cerebral/fisiopatologia , Imageamento por Ressonância Magnética/métodos , Memória/fisiologia , Adolescente , Adulto , Mapeamento Encefálico/métodos , Criança , Epilepsia/fisiopatologia , Epilepsia do Lobo Temporal/fisiopatologia , Feminino , Humanos , Masculino , Lobo Temporal/fisiopatologia
13.
Brain Topogr ; 32(3): 492-503, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30895423

RESUMO

Establishing language dominance is an important step in the presurgical evaluation of patients with refractory epilepsy. In the absence of a universally accepted gold-standard non-invasive method to determine language dominance in the preoperative assessment, a range of tools and methodologies have recently received attention. When applied to pediatric age, many of the proposed methods, such as functional magnetic resonance imaging (fMRI), may present some challenges due to the time-varying effects of epileptogenic lesions and of on-going seizures on maturational phenomena. Magnetoencephalography (MEG) has the advantage of being insensitive to the distortive effects of anatomical lesions on brain microvasculature and to differences in the metabolism or vascularization of the developing brain and also provides a less intimidating recording environment for younger children. In this study we investigated the reliability of lateralized synchronous cortical activation during a verb generation task in a group of 28 children (10 males and 18 females, mean age 12 years) with refractory epilepsy who were evaluated for epilepsy surgery. The verb generation task was associated with significant decreases in beta oscillatory power (13-30 Hz) in frontal and temporal lobes. The MEG data were compared with other available presurgical non-invasive data including cortical stimulation, neuropsychological and fMRI data on language lateralization where available. We found that the lateralization of MEG beta power reduction was concordant with language dominance determined by one or more different assessment methods (i.e. cortical stimulation mapping, neuropsychological, fMRI or post-operative data) in 89% of patients. Our data suggest that qualitative hemispheric differences in task-related changes of spectral power could offer a promising insight into the contribution of dominant and non-dominant hemispheres in language processing and may help to characterize the specialization and lateralization of language processes in children.


Assuntos
Mapeamento Encefálico/métodos , Encéfalo/fisiologia , Epilepsia Resistente a Medicamentos/cirurgia , Lateralidade Funcional , Idioma , Magnetoencefalografia/métodos , Adolescente , Criança , Feminino , Lobo Frontal/fisiologia , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Procedimentos Neurocirúrgicos , Reprodutibilidade dos Testes , Lobo Temporal/fisiologia
14.
Nephrol Dial Transplant ; 33(7): 1268-1277, 2018 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-28992229

RESUMO

Background: There is mixed evidence regarding the nature of cognitive function in patients who have undergone renal transplantation. The aim of this meta-analysis was to examine which cognitive domains are impacted following kidney transplantation and how performance compares with non-transplanted patients or healthy controls/normative data. Method: A systematic search was conducted using keywords within three databases (Embase, MEDLINE and PsychINFO), yielding 458 unique studies, 10 of which met the inclusion criteria. Neuropsychological tests were grouped into nine cognitive domains and three separate analyses were undertaken within each domain: (i) within subjects pre- versus post-transplant, (ii) transplanted versus non-transplanted patients and (iii) transplanted versus healthy matched controls and standardized normative data. Results: Transplanted patients showed moderate to large improvements in the domains of general cognitive status (g = 0.526), information and motor speed (g = 0.558), spatial reasoning (g = 0.376), verbal memory (g = 0.759) and visual memory (g = 0.690) when compared with their pre-operative scores. Test scores in the same five domains were significantly better in post-transplanted patients when compared with dialysis-dependant or conservatively managed chronic kidney disease patients. However, post-transplanted patients' performance was significantly low compared with that of healthy controls (and standardized normative data) in the domains of executive functioning (g = -0.283), verbal fluency (g = -0.657) and language (g = -0.573). Conclusions: Two key issues arise from this review. First, domain-specific cognitive improvement occurs in patients after successful transplantation. Nevertheless, transplanted patients still performed significantly below healthy controls in some domains. Second, there are important shortcomings in existing studies; the length of follow-up is typically short and only limited neuropsychological test batteries are employed. These factors are important in order to support the recovery of cognitive function among patients following renal transplant.


Assuntos
Transtornos Cognitivos/etiologia , Transplante de Rim/efeitos adversos , Estudos de Casos e Controles , Humanos , Testes Neuropsicológicos
15.
J Int Neuropsychol Soc ; 24(5): 445-455, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29510770

RESUMO

OBJECTIVES: Agenesis of the corpus callosum (AgCC), characterized by developmental absence of the corpus callosum, is one of the most common congenital brain malformations. To date, there are limited data on the neuropsychological consequences of AgCC and factors that modulate different outcomes, especially in children. This study aimed to describe general intellectual, academic, executive, social and behavioral functioning in a cohort of school-aged children presenting for clinical services to a hospital and diagnosed with AgCC. The influences of age, social risk and neurological factors were examined. METHODS: Twenty-eight school-aged children (8 to 17 years) diagnosed with AgCC completed tests of general intelligence (IQ) and academic functioning. Executive, social and behavioral functioning in daily life, and social risk, were estimated from parent and teacher rated questionnaires. MRI findings reviewed by a pediatric neurologist confirmed diagnosis and identified brain characteristics. Clinical details including the presence of epilepsy and diagnosed genetic condition were obtained from medical records. RESULTS: In our cohort, ~50% of children experienced general intellectual, academic, executive, social and/or behavioral difficulties and ~20% were functioning at a level comparable to typically developing children. Social risk was important for understanding variability in neuropsychological outcomes. Brain anomalies and complete AgCC were associated with lower mathematics performance and poorer executive functioning. CONCLUSIONS: This is the first comprehensive report of general intellectual, academic, executive social and behavioral consequences of AgCC in school-aged children. The findings have important clinical implications, suggesting that support to families and targeted intervention could promote positive neuropsychological functioning in children with AgCC who come to clinical attention. (JINS, 2018, 24, 445-455).


Assuntos
Agenesia do Corpo Caloso/diagnóstico , Comportamento Infantil , Escolaridade , Função Executiva , Adolescente , Fatores Etários , Agenesia do Corpo Caloso/fisiopatologia , Agenesia do Corpo Caloso/psicologia , Criança , Comportamento Infantil/fisiologia , Comportamento Infantil/psicologia , Feminino , Humanos , Masculino , Testes Neuropsicológicos
16.
Neurocase ; 23(3-4): 201-209, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28789579

RESUMO

We present a patient with reading inexpertise and right hemianopia following left posterior cerebral artery (PCA) stroke. We examine the extent of disruption to reading performance and the extent of white matter tract damage relative to a patient with more limited PCA infarction and isolated right hemianopia. We show white matter disconnection of the temporal occipital fusiform cortex in our pure alexia patient. Connectivity-based laterality indices revealed right hemisphere laterality in the alexia patient; this was not associated with improved reading function. We speculate that the degree of premorbid laterality may be a critical factor affecting the extent of reading dysfunction in alexia.


Assuntos
Alexia Pura/patologia , Alexia Pura/fisiopatologia , Encéfalo/patologia , Encéfalo/fisiopatologia , Lateralidade Funcional , Leitura , Alexia Pura/diagnóstico por imagem , Alexia Pura/etiologia , Encéfalo/diagnóstico por imagem , Mapeamento Encefálico , Imagem de Difusão por Ressonância Magnética , Feminino , Hemianopsia/etiologia , Humanos , Infarto da Artéria Cerebral Posterior/complicações , Pessoa de Meia-Idade , Lobo Occipital/diagnóstico por imagem , Lobo Occipital/patologia , Lobo Occipital/fisiopatologia , Lobo Temporal/diagnóstico por imagem , Lobo Temporal/patologia , Lobo Temporal/fisiopatologia
17.
J Shoulder Elbow Surg ; 26(8): 1348-1354, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28601487

RESUMO

BACKGROUND: The available literature on the use of a cementless total elbow arthroplasty (TEA) design and its results are limited. This clinical study reports the outcome of the cementless Discovery elbow system. METHODS: Patients were operated on by a single surgeon between 2007 and 2014. Nineteen patients (20 elbows) were available for review, 2 women (1 bilateral TEA) and 17 men. The age of the patients ranged from 27 to 75 years (mean, 48 years). The mean follow-up was 61.8 months (range, 12-156 months). Patients were assessed for range of motion, pain, and satisfaction level. Outcome scores included the Mayo Elbow Performance Score, the Liverpool Elbow Score, and the 12-Item Short Form Health Survey (version 1). Radiographs were reviewed to evaluate for loosening. RESULTS: The mean Mayo Elbow Performance Score was 77.25, and the mean Liverpool Elbow Score was 6.76. The mean flexion range was 123°, and the mean extension lag was 35°. The mean pronation was 59°, and the mean supination was 58°. On radiologic evaluation, there were no signs of loosening; however, in 2 cases, nonprogressive radiolucent lines were observed. No signs of infection were detected at final follow-up, and no elbows were revised. More than 90% of patients were satisfied with the overall outcome. CONCLUSION: The cementless TEA seems to be a reliable option for treatment of varying elbow diseases. Long-term results are needed to assess the survivorship of this design.


Assuntos
Artroplastia de Substituição do Cotovelo/instrumentação , Articulação do Cotovelo/fisiopatologia , Articulação do Cotovelo/cirurgia , Adulto , Idoso , Artroplastia de Substituição do Cotovelo/efeitos adversos , Articulação do Cotovelo/diagnóstico por imagem , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Dor/etiologia , Satisfação do Paciente , Pronação , Radiografia , Amplitude de Movimento Articular , Estudos Retrospectivos , Supinação , Resultado do Tratamento
18.
Community Ment Health J ; 53(4): 452-459, 2017 05.
Artigo em Inglês | MEDLINE | ID: mdl-28070775

RESUMO

This pilot study examined the usability, acceptability, and effectiveness of a free Provider Resilience (PR) mobile application (app) designed by the National Center for Telehealth and Technology to reduce provider burnout. Outpatient mental health providers (N = 30) used the PR app for 1 month. Participants rated the PR app on the System Usability Scale with an overall score of 79.7, which is in the top quartile for usability. Results of paired sample t tests on the Professional Quality of Life Scale indicated significant decreases on the Burnout (t = 3.65, p < .001) and Compassion Fatigue (t = 4.54, p < .001) subscales. The Provider Resilience app shows promise in reducing burnout and compassion fatigue in mental health care providers.


Assuntos
Esgotamento Profissional/prevenção & controle , Pessoal de Saúde/psicologia , Aplicativos Móveis , Resiliência Psicológica , Adulto , Esgotamento Profissional/psicologia , Feminino , Humanos , Masculino , Inquéritos e Questionários
19.
BMC Public Health ; 16: 651, 2016 07 27.
Artigo em Inglês | MEDLINE | ID: mdl-27465746

RESUMO

BACKGROUND: Poor diets are a leading cause of disease burden worldwide. In Australia, the Federal Government established the Food and Health Dialogue (the Dialogue) in 2009 to address this issue, primarily through food reformulation. We evaluated the Dialogue's performance over its 6 years of operation and used these findings to develop recommendations for the success of the new Healthy Food Partnership. METHODS: We used information from the Dialogue website, media releases, communiqués, e-newsletters, materials released under freedom-of-information, and Parliamentary Hansard to evaluate the Dialogue's achievements from October 2013 to November 2015, using the RE-AIM (reach, efficacy, adoption, implementation and maintenance) framework. We also engaged closely with two former Dialogue members. Our findings update a prior assessment done in October 2013. RESULTS: Little data is available to evaluate the Dialogue's recent achievements, with no information about progress against milestones released since October 2013. In the last 2 years, only one additional set of sodium reduction targets (cheese) was agreed and Quick Service Restaurant foods were added as an area for action. Some activity was identified in 12 of a possible 137 (9 %) areas of action within the Dialogue's mandate. Independent evaluation found targets were partially achieved in some food categories, with substantial variation in success between companies. No effects on the knowledge, behaviours or nutrient intake of the Australian population or evidence of impact on diet-related disease could be identified. CONCLUSIONS: The new Healthy Food Partnership has similar goals to the Dialogue. While highly laudable and recognised globally as cost-effective, the mechanism for delivery in Australia has been woefully inadequate. Strong government leadership, adequate funding, clear targets and timelines, management of conflict of interest, comprehensive monitoring and evaluation, and a plan for responsive regulation in the event of missed milestones will be required if the new Healthy Food Partnership is to achieve its urgent public health goals.


Assuntos
Dieta/normas , Indústria Alimentícia/normas , Alimentos/normas , Promoção da Saúde/métodos , Saúde Pública/métodos , Austrália , Governo , Humanos , Avaliação de Programas e Projetos de Saúde , Política Pública , Restaurantes/normas
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa