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Brain AND childhood and adolescence development

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https://www.readbyqxmd.com/read/29352102/teenage-onset-progressive-myoclonic-epilepsy-due-to-a-familial-c9orf72-repeat-expansion
#1
Jelle van den Ameele, Ivana Jedlickova, Anna Pristoupilova, Anne Sieben, Sara Van Mossevelde, Chantal Ceuterick-de Groote, Helena Hůlková, Radoslav Matej, Alfred Meurs, Christine Van Broeckhoven, Samuel F Berkovic, Patrick Santens, Stanislav Kmoch, Bart Dermaut
BACKGROUND: The progressive myoclonic epilepsies (PME) are a heterogeneous group of disorders in which a specific diagnosis cannot be made in a subset of patients, despite exhaustive investigation. C9orf72 repeat expansions are emerging as an important causal factor in several adult-onset neurodegenerative disorders, in particular frontotemporal lobar degeneration and amyotrophic lateral sclerosis. An association with PME has not been reported previously. OBJECTIVE: To identify the causative mutation in a Belgian family where the proband had genetically unexplained PME...
January 19, 2018: Neurology
https://www.readbyqxmd.com/read/29305910/the-development-of-brain-white-matter-microstructure
#2
Catherine Lebel, Sean Deoni
Throughout infancy, childhood, and adolescence, our brains undergo remarkable changes. Processes including myelination and synaptogenesis occur rapidly across the first 2-3 years of life, and ongoing brain remodeling continues into young adulthood. Studies have sought to characterize the patterns of structural brain development, and early studies predominately relied upon gross anatomical measures of brain structure, morphology, and organization. MRI offers the ability to characterize and quantify a range of microstructural aspects of brain tissue that may be more closely related to fundamental neurodevelopmental processes...
January 3, 2018: NeuroImage
https://www.readbyqxmd.com/read/29305647/investigation-of-brain-structure-in-the-1-month-infant
#3
Douglas C Dean, E M Planalp, W Wooten, C K Schmidt, S R Kecskemeti, C Frye, N L Schmidt, H H Goldsmith, A L Alexander, R J Davidson
The developing brain undergoes systematic changes that occur at successive stages of maturation. Deviations from the typical neurodevelopmental trajectory are hypothesized to underlie many early childhood disorders; thus, characterizing the earliest patterns of normative brain development is essential. Recent neuroimaging research provides insight into brain structure during late childhood and adolescence; however, few studies have examined the infant brain, particularly in infants under 3 months of age. Using high-resolution structural MRI, we measured subcortical gray and white matter brain volumes in a cohort (N = 143) of 1-month infants and examined characteristics of these volumetric measures throughout this early period of neurodevelopment...
January 5, 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/29288952/effects-of-the-brain-derived-neurotropic-factor-variant-val66met-on-cortical-structure-in-late-childhood-and-early-adolescence
#4
Celia Maria de Araujo, Andre Zugman, Walter Swardfager, Sintia Iole Nogueira Belangero, Vanessa Kiyomi Ota, Leticia Maria Spindola, Hakon Hakonarson, Renata Pellegrino, Ary Gadelha, Giovanni Abrahão Salum, Pedro Mario Pan, Luciana Monteiro de Moura, Marco Del Aquilla, Felipe Almeida Picon, Edson Amaro, João Ricardo Sato, Elisa Brietzke, Rodrigo Grassi-Oliveira, Luis Augusto P Rohde, Euripedes Constantino Miguel, Rodrigo A Bressan, Andrea Parolin Jackowski
BACKGROUND: The brain-derived neurotrophic factor (BDNF) Val66Met polymorphism (rs6265) has been associated with several neuropsychiatric disorders and regional structural brain changes in adults, but little is known about Val66Met's effect on brain morphology during typical or atypical neurodevelopment. Windows of vulnerability to psychopathology may be associated with the different alleles of the Val66Met polymorphism during childhood and adolescence. METHODOLOGY: We investigated the effect of Val66Met on cortical thickness in MRI scans of 718 children and adolescents (6-12 years old) with typical development, and in those meeting DSM criteria for a psychiatric disorder...
December 20, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29280185/neural-perspectives-on-cognitive-control-development-during-childhood-and-adolescence-should-take-into-account-how-the-obesity-affects-brain-development
#5
Irene Esteban-Cornejo, Francisco B Ortega, Andrés Catena
Cognitive control comprises working memory, inhibition, cognitive flexibility and error monitoring and is closely tied to the development of the prefrontal cortex. The fact that the prefrontal cortex is important for cognitive control has been consistently shown among adults (1). Crone and Steinbeis explored new ways of categorising developmental progressions in cognitive control during childhood and adolescence (1). They revealed that the functional development of the dorsolateral prefrontal cortex supports the development of deliberative processes, whereas the medial prefrontal cortex supports the development of internalised decisions (1)...
December 27, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/29277402/early-nutrition-influences-developmental-myelination-and-cognition-in-infants-and-young-children
#6
Sean Deoni, Douglas Dean, Sarah Joelson, Jonathan O'Regan, Nora Schneider
Throughout early neurodevelopment, myelination helps provide the foundation for brain connectivity and supports the emergence of cognitive and behavioural functioning. Early life nutrition is an important and modifiable factor that can shape myelination and, consequently, cognitive outcomes. Differences in the nutritional composition between human breast and formula milk may help explain the functional and cognitive disparity often observed between exclusively breast versus formula-fed children. However, past cognitive and brain imaging studies comparing breast and formula feeding are often: cross-sectional; performed in older children and adolescents relying on parental recall of infant feeding; and generally treat formula-fed children as a single group despite the variability between formula compositions...
December 19, 2017: NeuroImage
https://www.readbyqxmd.com/read/29277371/repeated-fluvoxamine-treatment-recovers-early-postnatal-stress-induced-hypersociability-like-behavior-in-adult-rats
#7
Haruko Kumamoto, Taku Yamaguchi, Kohtarou Konno, Takeshi Izumi, Takayuki Yoshida, Yu Ohmura, Masahiko Watanabe, Mitsuhiro Yoshioka
Childhood maltreatment is associated with impaired adult brain function, particularly in the hippocampus, and is not only a major risk factor for some psychiatric diseases but also affects early social development and social adaptation in later life. The aims of this study were to determine whether early postnatal stress affects social behavior and whether repeated fluvoxamine treatment reverses these changes. Rat pups were exposed to footshock stress during postnatal days 21-25 (at 3 weeks old: 3wFS). During the post-adolescent period (10-14 weeks postnatal), the social interaction test and Golgi-cox staining of dorsal hippocampal pyramidal neurons were performed...
December 9, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29261516/neonatal-neuroprotection-bringing-best-practice-to-the-bedside-in-the-nicu
#8
Terrie Lockridge
Preterm birth interrupts the precise process of fetal maturation, forcing critical neurologic growth to continue within the Neonatal Intensive Care Unit (NICU). Concern for the impact of the NICU experience on the developing brain led to a unit-based Quality Improvement (QI) project to promote best outcomes for our graduates. The objective was to implement a standard of care for neonatal neuroprotection in a large urban tertiary center. A multidisciplinary committee researched and developed the Neonatal Neuroprotective Best Practice Guidelines to identify optimal interventions, as well as provide physiologic rationales to reinforce importance of these practices...
December 19, 2017: MCN. the American Journal of Maternal Child Nursing
https://www.readbyqxmd.com/read/29259302/modelling-neuroanatomical-variation-during-childhood-and-adolescence-with-neighbourhood-preserving-embedding
#9
Gareth Ball, Chris Adamson, Richard Beare, Marc L Seal
Brain development is a dynamic process with tissue-specific alterations that reflect complex and ongoing biological processes taking place during childhood and adolescence. Accurate identification and modelling of these anatomical processes in vivo with MRI may provide clinically useful imaging markers of individual variability in development. In this study, we use manifold learning to build a model of age- and sex-related anatomical variation using multiple magnetic resonance imaging metrics. Using publicly available data from a large paediatric cohort (n = 768), we apply a multi-metric machine learning approach combining measures of tissue volume, cortical area and cortical thickness into a low-dimensional data representation...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29251836/longitudinal-development-of-thalamic-and-internal-capsule-microstructure-in-autism-spectrum-disorder
#10
Kristine McLaughlin, Brittany G Travers, Olga I Dadalko, Douglas C Dean, Do Tromp, Nagesh Adluru, Daniel Destiche, Abigail Freeman, Molly D Prigge, Alyson Froehlich, Tyler C Duffield, Brandon A Zielinski, Erin D Bigler, Nicholas Lange, Jeff S Anderson, Andrew L Alexander, Janet E Lainhart
The thalamus is a key sensorimotor relay area that is implicated in autism spectrum disorder (ASD). However, it is unknown how the thalamus and white-matter structures that contain thalamo-cortical fiber connections (e.g., the internal capsule) develop from childhood into adulthood and whether this microstructure relates to basic motor challenges in ASD. We used diffusion weighted imaging in a cohort-sequential design to assess longitudinal development of the thalamus, and posterior- and anterior-limbs of the internal capsule (PLIC and ALIC, respectively) in 89 males with ASD and 56 males with typical development (3-41 years; all verbal)...
December 18, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/29231773/molecular-imaging-of-autism-spectrum-disorder
#11
Brian Jaeho Hwang, Mona Adel Mohamed, James Robert Brašić
Autism spectrum disorder (ASD) is a condition with onset in early childhood characterized by marked deficits in interpersonal interactions and communication and by a restricted and repetitive range of interests and activities. This review points out key recent findings utilizing molecular imaging including magnetic resonance spectroscopy (MRS) and nuclear neuroimaging techniques such as positron emission tomography (PET) and single-photon emission computed tomography (SPECT). MRS indicates an excitatory/inhibitory imbalance in high-functioning autism...
December 12, 2017: International Review of Psychiatry
https://www.readbyqxmd.com/read/29229299/diffusion-mri-of-white-matter-microstructure-development-in-childhood-and-adolescence-methods-challenges-and-progress
#12
REVIEW
Christian K Tamnes, David R Roalf, Anne-Lise Goddings, Catherine Lebel
Diffusion magnetic resonance imaging (dMRI) continues to grow in popularity as a useful neuroimaging method to study brain development, and longitudinal studies that track the same individuals over time are emerging. Over the last decade, seminal work using dMRI has provided new insights into the development of brain white matter (WM) microstructure, connections and networks throughout childhood and adolescence. This review provides an introduction to dMRI, both diffusion tensor imaging (DTI) and other dMRI models, as well as common acquisition and analysis approaches...
December 7, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29221915/structural-brain-development-a-review-of-methodological-approaches-and-best-practices
#13
REVIEW
Nandita Vijayakumar, Kathryn L Mills, Aaron Alexander-Bloch, Christian K Tamnes, Sarah Whittle
Continued advances in neuroimaging technologies and statistical modelling capabilities have improved our knowledge of structural brain development in children and adolescents. While this has provided an increasingly nuanced understanding of brain development, the field is still plagued by inconsistent findings. This review highlights the methodological diversity in existing longitudinal magnetic resonance imaging (MRI) studies on structural brain development during childhood and adolescence, and addresses how such variation might contribute to inconsistencies in the literature...
November 22, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29209390/the-mechanism-of-anti-epileptogenesis-by-levetiracetam-treatment-is-similar-to-the-spontaneous-recovery-of-idiopathic-generalized-epilepsy-during-adolescence
#14
Hiroki Kikuyama, Tadahito Hanaoka, Tetsufumi Kanazawa, Yasushi Yoshida, Takafumi Mizuno, Hirotaka Toyoda, Hiroshi Yoneda
Objective: The anti-epileptogenic drug levetiracetam has anticonvulsant and anti-epileptogenesis effects. Synergy between cell death and inflammation can lead to increased levels of apoptosis inhibitory factors and brain-derived neurotrophic factor, aberrant neurogenesis and extended axon sprouting. Once hyperexcitation of the neural network occurs, spontaneous seizures or epileptogenesis develops. This study investigated whether the anti-epileptogenic effect of levetiracetam is due to its alternate apoptotic activity...
November 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/29205692/changing-brain-connectivity-dynamics-from-early-childhood-to-adulthood
#15
Ashkan Faghiri, Julia M Stephen, Yu-Ping Wang, Tony W Wilson, Vince D Calhoun
Brain maturation through adolescence has been the topic of recent studies. Previous works have evaluated changes in morphometry and also changes in functional connectivity. However, most resting-state fMRI studies have focused on static connectivity. Here we examine the relationship between age/maturity and the dynamics of brain functional connectivity. Utilizing a resting fMRI dataset comprised 421 subjects ages 3-22 from the PING study, we first performed group ICA to extract independent components and their time courses...
December 5, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29190830/reduced-functional-connectivity-of-fronto-parietal-sustained-attention-networks-in-severe-childhood-abuse
#16
Heledd Hart, Lena Lim, Mitul A Mehta, Antonia Chatzieffraimidou, Charles Curtis, Xiaohui Xu, Gerome Breen, Andrew Simmons, Kah Mirza, Katya Rubia
Childhood maltreatment is associated with attention deficits. We examined the effect of childhood abuse and abuse-by-gene (5-HTTLPR, MAOA, FKBP5) interaction on functional brain connectivity during sustained attention in medication/drug-free adolescents. Functional connectivity was compared, using generalised psychophysiological interaction (gPPI) analysis of functional magnetic resonance imaging (fMRI) data, between 21 age-and gender-matched adolescents exposed to severe childhood abuse and 27 healthy controls, while they performed a parametrically modulated vigilance task requiring target detection with a progressively increasing load of sustained attention...
2017: PloS One
https://www.readbyqxmd.com/read/29185545/movement-disorders-and-chronic-psychosis-five-new-things
#17
Davide Martino, Francesca Morgante
Purpose of review: To discuss selected peer-reviewed research articles published between 2014 and 2016 and highlight 5 clinically relevant messages related to hyperkinetic and hypokinetic movement disorders in patients with chronic psychosis. Recent findings: A recent population-based study complemented data from clinical trials in showing increased risk of developing extrapyramidal symptoms with antipsychotic use. A community service-based longitudinal study showed that dopamine transporter imaging could help identify subgroups of patients with parkinsonism associated with antipsychotics with a progressive course, potentially manageable with l-dopa...
April 2017: Neurology. Clinical Practice
https://www.readbyqxmd.com/read/29184488/brain-maturation-cognition-and-voice-pattern-in-a-gender-dysphoria-case-under-pubertal-suppression
#18
Maiko A Schneider, Poli M Spritzer, Bianca Machado Borba Soll, Anna M V Fontanari, Marina Carneiro, Fernanda Tovar-Moll, Angelo B Costa, Dhiordan C da Silva, Karine Schwarz, Maurício Anes, Silza Tramontina, Maria I R Lobato
Introduction: Gender dysphoria (GD) (DMS-5) is a condition marked by increasing psychological suffering that accompanies the incongruence between one's experienced or expressed gender and one's assigned gender. Manifestation of GD can be seen early on during childhood and adolescence. During this period, the development of undesirable sexual characteristics marks an acute suffering of being opposite to the sex of birth. Pubertal suppression with gonadotropin releasing hormone analogs (GnRHa) has been proposed for these individuals as a reversible treatment for postponing the pubertal development and attenuating psychological suffering...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29178394/maturation-in-auditory-event-related-potentials-explains-variation-in-language-ability-in-children
#19
Elaine Y L Kwok, Marc F Joanisse, Lisa M D Archibald, Margot E Stothers, Heather M Brown, Janis Oram Cardy
Processing of auditory information in the cortex continues to develop into later childhood and adolescence. Recent research has indicated that intraclass correlation (ICC) is the best method for capturing maturation in auditory event-related potentials (AEPs) of school-age children. However, the sensitivity of the ICC approach in discerning AEP changes in children has not been consistently demonstrated and positive results have not been replicated. We attempted this replication and further explored whether AEP maturation estimated using the ICC approach predicts cognitive and linguistic abilities in addition to chronological age...
November 27, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29176031/the-neurophysiology-of-working-memory-development-from-childhood-to-adolescence-and-young-adulthood
#20
Carlos M Gómez, Catarina Isabel Barriga-Paulino, Elena Isabel Rodríguez-Martínez, Ma Ángeles Rojas-Benjumea, Antonio Arjona, Jaime Gómez-González
Working memory (WM) is an important cognitive function that is necessary to perform our daily activities. The present review briefly describes the most accepted models underlying WM and the neural networks involved in its processing. The review focuses on how the neurophysiological mechanisms develop with age in the periods from childhood to adolescence and young adulthood. Studies using behavioral, neuroimaging, and electrophysiological techniques showed the progress of WM throughout the development. The present review focuses on the neurophysiology of the basic processes underlying WM operations, as indicated by electroencephalogram-derived signals, in order to take advantage of the excellent time resolution of this technique...
November 25, 2017: Reviews in the Neurosciences
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