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Neurodevelopmental techniques

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https://www.readbyqxmd.com/read/28436200/randomised-controlled-trial-shows-that-co-bedding-twins-may-reduce-birth-weight-recovery-delay-parenteral-nutrition-weaning-time-and-hospitalisation
#1
Arnaud Legrand, Anne Frondas, Fabien Aubret, Anne Corre, Cyril Flamant, Laure Simon, Clothilde Desrobert, Jean-Christophe Rozé
AIM: Cobedding describes a technique where premature twins are kept within the same incubator, inside a common cocoon, to prolong the alleged in utero behavioral bond and reduce post-natal stress. However there is no consensus amongst neonatologists regarding any clinical or developmental benefits cobedding may provide, in particular when performed early after the birth. The NEOCOB (NEOnatology & COBedding) trial aimed to assess, for the first time, early cobedding in preterm newborn twins...
April 24, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28414862/editorial-perspective-longitudinal-research-in-autism-introducing-the-concept-of-chronogeneity
#2
EDITORIAL
Stelios Georgiades, Somer L Bishop, Thomas Frazier
Autism Spectrum Disorder (ASD or autism) is a heterogeneous neurodevelopmental disorder. We are now at a critical juncture in autism research where we have the knowledge base and expertise to begin to think about studies that view heterogeneity, not as 'statistical noise' that can be 'accounted for' using data-reduction techniques (such as group trajectories), but rather as 'informative variance' that can help form a more precise and dynamic picture of autism. In this Editorial we coin a new term and introduce the concept of 'chronogeneity' for the study of autism heterogeneity in relation to the dimension of time (chrono)...
May 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28412269/towards-an-understanding-of-the-isotype-specific-functions-of-tubulin-in-neurons-technical-advances-in-tubulin-expression-and-purification
#3
Itsushi Minoura
Microtubules are cytoskeletal filaments critical for determining the complex morphology of neurons, as well as the basic architecture and organization of mitosis in all eukaryotic cells. Microtubules in humans are composed of 8 α- and 9 β-tubulin isotypes, each of which is encoded by different members of a multi-gene family. The expression pattern of tubulin isotypes, in addition to isotype-specific post-translational modifications, is thought to be critical for the morphogenesis of axons and dendrites. Recent studies revealed that several neurodevelopmental disorders are caused by mutations of specific tubulin isotypes, suggesting that each tubulin isotype has distinct functions...
April 12, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28383171/psychophysiological-responses-to-emotions-of-others-in-young-children-with-autism-spectrum-disorders-correlates-of-social-functioning
#4
Gemma Zantinge, Sophie van Rijn, Lex Stockmann, Hanna Swaab
Studying cognitive and affective mechanisms of social behavior could lead to identifying early indicators of derailing social behavior in young children with Autism Spectrum Disorders (ASD). The present study combined sensitive and objective techniques, such as eyetracking and psychophysiology, to provide insight into early neurodevelopmental mechanisms that are more difficult to uncover when relying on behavioral measures. Social attention towards faces and changes in affective arousal were investigated together in 28 young children with ASD (42-75 months) and 45 nonclinical controls (41-81 months)...
April 6, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28371754/extending-the-distributed-lag-model-framework-to-handle-chemical-mixtures
#5
Ghalib A Bello, Manish Arora, Christine Austin, Megan K Horton, Robert O Wright, Chris Gennings
Distributed Lag Models (DLMs) are used in environmental health studies to analyze the time-delayed effect of an exposure on an outcome of interest. Given the increasing need for analytical tools for evaluation of the effects of exposure to multi-pollutant mixtures, this study attempts to extend the classical DLM framework to accommodate and evaluate multiple longitudinally observed exposures. We introduce 2 techniques for quantifying the time-varying mixture effect of multiple exposures on an outcome of interest...
March 31, 2017: Environmental Research
https://www.readbyqxmd.com/read/28371411/generation-of-integration-free-induced-pluripotent-stem-cells-from-urine-derived-cells-isolated-from-individuals-with-down-syndrome
#6
Young M Lee, Bruna L Zampieri, Jonah J Scott-McKean, Mark W Johnson, Alberto C S Costa
Down syndrome (DS) is a genetic disorder caused by trisomy 21 (T21). Over the past two decades, the use of mouse models has led to significant advances in the understanding of mechanisms underlying various phenotypic features and comorbidities secondary to T21 and even informed the design of clinical trials aimed at enhancing the cognitive abilities of persons with DS. In spite of its success, this approach has been plagued by all the typical limitations of rodent modeling of human disorders and diseases. Recently, several laboratories have succeeded in producing T21 human induced pluripotent stem cells (T21-iPSCs) from individuals with DS, which is emerging as a promising complementary tool for the study of DS...
March 28, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28369850/an-mri-study-of-the-corpus-callosum-in-monkeys-developmental-trajectories-and-effects-of-neonatal-hippocampal-and-amygdala-lesions
#7
Christa Payne, Laetitia Cirilli, Jocelyne Bachevalier
This study provides the first characterization of early developmental trajectories of corpus callosum (CC) segments in rhesus macaques using noninvasive MRI techniques and assesses long-term effects of neonatal amygdala or hippocampal lesions on CC morphometry. In Experiment 1, 10 monkeys (5 males) were scanned at 1 week-2 years of age; eight additional infants (4 males) were scanned once at 1-4 weeks of age. The first 8 months showed marked growth across all segments, with sustained, albeit slower, growth through 24 months...
May 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28365755/through-thick-and-thin-a-need-to-reconcile-contradictory-results-on-trajectories-in-human-cortical-development
#8
Kristine B Walhovd, Anders M Fjell, Jay Giedd, Anders M Dale, Timothy T Brown
Understanding how brain development normally proceeds is a premise of understanding neurodevelopmental disorders. This has sparked a wealth of magnetic resonance imaging (MRI) studies. Unfortunately, they are in marked disagreement on how the cerebral cortex matures. While cortical thickness increases for the first 8-9 years of life have repeatedly been reported, others find continuous cortical thinning from early childhood, at least from age 3 or 4 years. We review these inconsistencies, and discuss possible reasons, including the use of different scanners, recording parameters and analysis tools, and possible effects of variables such as head motion...
February 1, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28359565/deficits-in-neurite-density-underlie-white-matter-structure-abnormalities-in-first-episode-psychosis
#9
Charlotte L Rae, Geoff Davies, Sarah N Garfinkel, Matt C Gabel, Nicholas G Dowell, Mara Cercignani, Anil K Seth, Kathryn E Greenwood, Nick Medford, Hugo D Critchley
BACKGROUND: Structural abnormalities across multiple white matter tracts are recognized in people with early psychosis, consistent with dysconnectivity as a neuropathological account of symptom expression. We applied advanced neuroimaging techniques to characterize microstructural white matter abnormalities for a deeper understanding of the developmental etiology of psychosis. METHODS: Thirty-five first-episode psychosis patients, and 19 healthy controls, participated in a quantitative neuroimaging study using neurite orientation dispersion and density imaging, a multishell diffusion-weighted magnetic resonance imaging technique that distinguishes white matter fiber arrangement and geometry from changes in neurite density...
February 17, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28292543/the-impact-of-kangaroo-care-on-premature-infant-weight-gain
#10
REVIEW
Melvina Evereklian, Bobbie Posmontier
BACKGROUND: Preterm births occur among 11.4% of all live infant births. Without steady weight gain, premature infants may experience lengthy hospitalizations, neurodevelopmental deficits and hospital readmissions, which can increase the financial burden on the health care system and their families. The total U.S. health-related costs linked to preterm infant deliveries are estimated at $4.33 billion. Kangaroo care is a feasible practice that can improve preterm infant weight gain. However, this intervention is utilized less often throughout the U...
March 11, 2017: Journal of Pediatric Nursing
https://www.readbyqxmd.com/read/28269170/sulcal-curve-extraction-using-laplace-beltrami-eigenfunction-level-sets
#11
Rosita Shishegar, Mary Tolcos, David W Walker, Leigh A Johnston
The complexity of the human cortex is demonstrated in the intricate pattern of gyri and sulci that arise from the cortical folding process during development. Quantitative assessment of cortical folding is important in the definition of normal brain development and provides insight into neurodevelopmental disorders. In this work, a method for sulcal curve extraction is proposed that combines the advantages of previously proposed depth based and curvature based methods. The technique, derived from Laplace Beltrami eigenfunction level sets, maps mean curvature on the level sets, and incorporates depth information using extracted sulci and gyri, a characteristic previously attributed only to depth based methods...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28256692/-orofacial-alterations-and-surface-electromyography-in-neurodevelopmental-disorders
#12
V Rosell-Clari
INTRODUCTION: Surface electromyography has become a widely used technique for measuring the activity of different muscle groups. Although the reliability and validity of the technique are discussed, there is an important body of scientific literature that defends the use of this technique. AIM: To present through a case study, the two basic uses of surface electromyography: the measurement of orofacial muscular activity and use it as biofeedback modulator of the muscular activity itself...
February 24, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28227400/sulcal-curve-extraction-using-laplace-beltrami-eigenfunction-level-sets
#13
Rosita Shishegar, Mary Tolcos, David W Walker, Leigh A Johnston, Rosita Shishegar, Mary Tolcos, David W Walker, Leigh A Johnston, David W Walker, Mary Tolcos, Leigh A Johnston, Rosita Shishegar
The complexity of the human cortex is demonstrated in the intricate pattern of gyri and sulci that arise from the cortical folding process during development. Quantitative assessment of cortical folding is important in the definition of normal brain development and provides insight into neurodevelopmental disorders. In this work, a method for sulcal curve extraction is proposed that combines the advantages of previously proposed depth based and curvature based methods. The technique, derived from Laplace Beltrami eigenfunction level sets, maps mean curvature on the level sets, and incorporates depth information using extracted sulci and gyri, a characteristic previously attributed only to depth based methods...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28208138/a-comparison-of-the-thompson-encephalopathy-score-and-amplitude-integrated-electroencephalography-in-infants-with-perinatal-asphyxia-and-therapeutic-hypothermia
#14
Lauren C Weeke, Ana Vilan, Mona C Toet, Ingrid C van Haastert, Linda S de Vries, Floris Groenendaal
BACKGROUND: In previous studies clinical signs or amplitude-integrated electroencephalography (aEEG)-based signs of encephalopathy were used to select infants with perinatal asphyxia for treatment with hypothermia. AIM: The objective of this study was to compare Thompson encephalopathy scores and aEEG, and relate both to outcome. SUBJECTS AND METHODS: Thompson scores, aEEG, and outcome were compared in 122 infants with perinatal asphyxia and therapeutic hypothermia...
February 17, 2017: Neonatology
https://www.readbyqxmd.com/read/28195417/toward-the-automatic-quantification-of-in-utero-brain-development-in-3d-structural-mri-a-review
#15
REVIEW
Oualid M Benkarim, Gerard Sanroma, Veronika A Zimmer, Emma Muñoz-Moreno, Nadine Hahner, Elisenda Eixarch, Oscar Camara, Miguel Angel González Ballester, Gemma Piella
Investigating the human brain in utero is important for researchers and clinicians seeking to understand early neurodevelopmental processes. With the advent of fast magnetic resonance imaging (MRI) techniques and the development of motion correction algorithms to obtain high-quality 3D images of the fetal brain, it is now possible to gain more insight into the ongoing maturational processes in the brain. In this article, we present a review of the major building blocks of the pipeline toward performing quantitative analysis of in vivo MRI of the developing brain and its potential applications in clinical settings...
February 14, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28192196/quantification-of-various-app-mrna-isoforms-and-epistasis-in-lesch-nyhan-disease
#16
Khue Vu Nguyen, William L Nyhan
The present work is the development of a simple and specific kinetic method based on RT-PCR technique coupled with direct sequencing for quantification of various amyloid precursor protein-mRNA isoforms (APP-mRNA isoforms) in biological samples, especially for identifying the most abundant one that may decisive for the normal status or disease risk. Application of this kinetic method to the Lesch-Nyhan disease (LND) was performed and results indicated an epistasis between mutated hypoxanthine phosphoribosyltransferase1 (HPRT1) and APP genes...
March 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28174603/mlpa-analysis-in-a-cohort-of-patients-with-autism
#17
Sara Peixoto, Joana B Melo, José Ferrão, Luís M Pires, Nuno Lavoura, Marta Pinto, Guiomar Oliveira, Isabel M Carreira
BACKGROUND: Autism is a global neurodevelopmental disorder which generally manifests during the first 2 years and continues throughout life, with a range of symptomatic variations. Epidemiological studies show an important role of genetic factors in autism and several susceptible regions and genes have been identified. The aim of our study was to validate a cost-effective set of commercial Multiplex Ligation dependent Probe Amplification (MLPA) and methylation specific multiplex ligation dependent probe amplification (MS-MLPA) test in autistic children refered by the neurodevelopmental center and autism unit of a Paediatric Hospital...
2017: Molecular Cytogenetics
https://www.readbyqxmd.com/read/28166485/neuroimaging-and-occupational-therapy-bridging-the-gap-to-advance-rehabilitation-in-developmental-coordination-disorder
#18
Meisan Brown-Lum, Jill G Zwicker
Developmental coordination disorder (DCD) is a neurodevelopmental disorder characterized by poor motor skills that interfere with a child's ability to perform everyday activities. Little is known about the neural mechanisms that implicate DCD, making it difficult to understand why children with DCD struggle to learn motor skills and selecting the best intervention to optimize function. Neuroimaging studies that utilize magnetic resonance imaging techniques have the capacity to play a critical role in helping to guide clinicians to optimize functional outcomes of children with DCD using evidence-based rehabilitation interventions...
January 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28157275/continuous-cardiotocography-ctg-as-a-form-of-electronic-fetal-monitoring-efm-for-fetal-assessment-during-labour
#19
REVIEW
Zarko Alfirevic, Declan Devane, Gillian Ml Gyte, Anna Cuthbert
BACKGROUND: Cardiotocography (CTG) records changes in the fetal heart rate and their temporal relationship to uterine contractions. The aim is to identify babies who may be short of oxygen (hypoxic) to guide additional assessments of fetal wellbeing, or determine if the baby needs to be delivered by caesarean section or instrumental vaginal birth. This is an update of a review previously published in 2013, 2006 and 2001. OBJECTIVES: To evaluate the effectiveness and safety of continuous cardiotocography when used as a method to monitor fetal wellbeing during labour...
February 3, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28137240/ascidians-an-emerging-marine-model-for-drug-discovery-and-screening
#20
Rémi Dumollard, Ievgeniia Gazo, Isa D L Gomes, Lydia Besnardeau, Alex McDougall
Ascidians (tunicates; sea squirts) are marine animals which provide a source of diverse, bioactive natural products, and a model for toxicity screenings. Compounds isolated from ascidians comprise an approved anti-tumor drug and many others are potent drug leads. Furthermore, the use of invertebrate embryos for toxicological screening tests or analysis offers the possibility to image a large number of samples for high throughput screens. Ascidians are members of a sister clade to the vertebrates and make a vertebrate-like tadpole larva composed of less than 3000 cells in 18 hours...
January 29, 2017: Current Topics in Medicinal Chemistry
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