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Brain AND childhood and adolescence development

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https://www.readbyqxmd.com/read/28817577/detailing-neuroanatomical-development-in-late-childhood-and-early-adolescence-using-noddi
#1
Alyssa Mah, Bryce Geeraert, Catherine Lebel
Diffusion tensor imaging (DTI) studies have provided much evidence of white and subcortical gray matter changes during late childhood and early adolescence that suggest increasing myelination, axon density, and/or fiber coherence. Neurite orientation dispersion and density imaging (NODDI) can be used to further characterize development in white and subcortical grey matter regions in the brain by improving specificity of the MRI signal compared to conventional DTI. We used measures from NODDI and DTI to examine white and subcortical gray matter development in a group of 27 healthy participants aged 8-13 years...
2017: PloS One
https://www.readbyqxmd.com/read/28816835/acute-worsening-of-tics-on-varenicline
#2
Shivam Om Mittal, Bryan T Klassen, Anhar Hassan, James H Bower, Elizabeth A Coon
OBJECTIVE: The aim of this study was to report worsening of Tourette syndrome (TS) in 2 patients treated with varenicline. BACKGROUND: Abnormal dopaminergic signaling is likely involved in the pathophysiology of TS. Varenicline is a partial α4β2 nicotinic acetylcholine agonist that enhances dopamine release. Therefore, the use of varenicline may influence tics in patients with TS. METHOD: We analyzed and described 2 case studies on patients with significant worsening of tics after treatment with varenicline...
August 14, 2017: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/28777995/beyond-stereotypes-of-adolescent-risk-taking-placing-the-adolescent-brain-in-developmental-context
#3
REVIEW
Daniel Romer, Valerie F Reyna, Theodore D Satterthwaite
Recent neuroscience models of adolescent brain development attribute the morbidity and mortality of this period to structural and functional imbalances between more fully developed limbic regions that subserve reward and emotion as opposed to those that enable cognitive control. We challenge this interpretation of adolescent development by distinguishing risk-taking that peaks during adolescence (sensation seeking and impulsive action) from risk taking that declines monotonically from childhood to adulthood (impulsive choice and other decisions under known risk)...
July 26, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28744969/abnormal-functional-activation-and-maturation-of-ventromedial-prefrontal-cortex-and-cerebellum-during-temporal-discounting-in-autism-spectrum-disorder
#4
Clodagh M Murphy, Anastasia Christakou, Vincent Giampietro, Michael Brammer, Eileen M Daly, Christine Ecker, Patrick Johnston, Debbie Spain, Dene M Robertson, Declan G Murphy, Katya Rubia
People with autism spectrum disorder (ASD) have poor decision-making and temporal foresight. This may adversely impact on their everyday life, mental health, and productivity. However, the neural substrates underlying poor choice behavior in people with ASD, or its' neurofunctional development from childhood to adulthood, are unknown. Despite evidence of atypical structural brain development in ASD, investigation of functional brain maturation in people with ASD is lacking. This cross-sectional developmental fMRI study investigated the neural substrates underlying performance on a temporal discounting (TD) task in 38 healthy (11-35 years old) male adolescents and adults with ASD and 40 age, sex, and IQ-matched typically developing healthy controls...
July 26, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28740870/reduced-ventral-tegmental-area-hippocampal-connectivity-in-children-and-adolescents-exposed-to-early-threat
#5
Hilary A Marusak, Joshua R B Hatfield, Moriah E Thomason, Christine A Rabinak
BACKGROUND: Preclinical data suggest that early life stress has detrimental effects on the brain's dopaminergic system, particularly the mesocorticolimbic pathway. Altered dopamine function is thought to contribute to the development of stress-related pathologies; yet, little is known about the impact of early stress on dopamine systems during childhood and adolescence, when stress-related disorders frequently emerge. Here, we evaluate the impact of early threat exposure (violence, abuse) on functional connectivity of putative dopaminergic midbrain regions, the ventral tegmental area (VTA) and substantia nigra (SN), giving rise to mesocorticolimbic and nigrostriatal pathways, respectively...
March 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28704424/examining-distinct-working-memory-processes-in-children-and-adolescents-using-fmri-results-and-validation-of-a-modified-brown-peterson-paradigm
#6
Vanessa Siffredi, Pierre Barrouillet, Megan Spencer-Smith, Maarten Vaessen, Vicki Anderson, Patrik Vuilleumier
Verbal working memory (WM) comprises different processes (encoding, maintenance, retrieval) that are often compromised in brain diseases, but their neural correlates have not yet been examined in childhood and adolescence. To probe WM processes and associated neural correlates in developmental samples, and obtain comparable effects across different ages and populations, we designed an adapted Brown-Peterson task (verbal encoding and retrieval combined with verbal and visual concurrent tasks during maintenance) to implement during functional magnetic resonance imaging (fMRI)...
2017: PloS One
https://www.readbyqxmd.com/read/28673976/changes-in-ventromedial-prefrontal-and-insular-cortex-support-the-development-of-metamemory-from-childhood-into-adolescence
#7
Yana Fandakova, Diana Selmeczy, Sarah Leckey, Kevin J Grimm, Carter Wendelken, Silvia A Bunge, Simona Ghetti
Metamemory monitoring, or the ability to introspect on the accuracy of one's memories, improves considerably during childhood, but the underlying neural changes and implications for intellectual development are largely unknown. The present study examined whether cortical changes in key brain areas hypothesized to support metacognition contribute to the development of metamemory monitoring from late childhood into early adolescence. Metamemory monitoring was assessed among 7- to 12-y-old children (n = 145) and adults (n = 31)...
July 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28667938/altered-stress-system-reactivity-after-pediatric-injury-relation-with-post-traumatic-stress-symptoms
#8
Linda Ewing-Cobbs, Mary R Prasad, Charles S Cox, Douglas A Granger, Gerardo Duque, Paul R Swank
Injury is the leading cause of death and disability in childhood. Injured children are at high risk for developing alterations in stress response systems and post-traumatic stress symptoms (PTSS) that may compromise long-term physical and psychological health. In a prospective, observational cohort study, we examined individual differences in, and correlates of, stress-reactivity of the hypothalamic-pituitary-adrenal axis (HPA; salivary cortisol) and autonomic nervous system (ANS; salivary alpha amylase, sAA) following pediatric injury...
October 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28667671/smaller-hippocampal-subfield-volumes-predict-verbal-associative-memory-in-pediatric-brain-tumor-survivors
#9
Alexandra L Decker, Kamila U Szulc, Eric Bouffet, Suzanne Laughlin, M Mallar Chakravarty, Jovanka Skocic, Cynthia B de Medeiros, Donald J Mabbott
The developing hippocampus is highly sensitive to chemotherapy and cranial radiation treatments for pediatric cancers, yet little is known about the effects that cancer treatments have on specific hippocampal subfields. Here, we examined hippocampal subfield volumes in twenty-nine pediatric brain tumor survivors treated with cranial radiation and chemotherapy, and thirty healthy developing children and adolescents. We also examined associations between hippocampal subfield volumes and short-term verbal memory...
July 1, 2017: Hippocampus
https://www.readbyqxmd.com/read/28666427/study-protocol-families-and-childhood-transitions-study-facts-a-longitudinal-investigation-of-the-role-of-the-family-environment-in-brain-development-and-risk-for-mental-health-disorders-in-community-based-children
#10
J G Simmons, O S Schwartz, K Bray, C Deane, E Pozzi, S Richmond, J Smith, N Vijayakumar, M L Byrne, M L Seal, M B H Yap, N B Allen, S L Whittle
BACKGROUND: Extant research has demonstrated that parenting behaviour can be a significant contributor to the development of brain structure and mental health during adolescence. Nonetheless, there is limited research examining these relationships during late childhood, and particularly in the critical period of brain development occurring between 8 and 10 years of age. The effects of the family environment on the brain during late childhood may have significant implications for later functioning, and particularly mental health...
June 30, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28642080/impact-of-juvenile-chronic-stress-on-adult-cortico-accumbal-function-implications-for-cognition-and-addiction
#11
REVIEW
Michael J Watt, Matthew A Weber, Shaydel R Davies, Gina L Forster
Repeated exposure to stress during childhood is associated with increased risk for neuropsychiatric illness, substance use disorders and other behavioral problems in adulthood. However, it is not clear how chronic childhood stress can lead to emergence of such a wide range of symptoms and disorders in later life. One possible explanation lies in stress-induced disruption to the development of specific brain regions associated with executive function and reward processing, deficits in which are common to the disorders promoted by childhood stress...
June 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28602046/exercise-interventions-for-cerebral-palsy
#12
REVIEW
Jennifer M Ryan, Elizabeth E Cassidy, Stephen G Noorduyn, Neil E O'Connell
BACKGROUND: Cerebral palsy (CP) is a neurodevelopmental disorder resulting from an injury to the developing brain. It is the most common form of childhood disability with prevalence rates of between 1.5 and 3.8 per 1000 births reported worldwide. The primary impairments associated with CP include reduced muscle strength and reduced cardiorespiratory fitness, resulting in difficulties performing activities such as dressing, walking and negotiating stairs.Exercise is defined as a planned, structured and repetitive activity that aims to improve fitness, and it is a commonly used intervention for people with CP...
June 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28582399/effect-of-verbal-task-complexity-in-a-working-memory-paradigm-in-patients-with-type-1-diabetes-a-fmri-study
#13
Joan Guàrdia-Olmos, Geisa B Gallardo-Moreno, Esteve Gudayol-Ferré, Maribel Peró-Cebollero, Andrés A González-Garrido
Type 1 diabetes (T1D) is commonly diagnosed in childhood and adolescence, and the developing brain has to cope with its deleterious effects. Although brain adaptation to the disease may not result in evident cognitive dysfunction, the effects of T1D on neurodevelopment could alter the pattern of BOLD fMRI activation. The aim of this study was to explore the neural BOLD activation pattern in patients with T1D versus that of healthy matched controls while performing two visuospatial working memory tasks, which included a pair of assignments administered through a block design...
2017: PloS One
https://www.readbyqxmd.com/read/28578432/effects-of-childhood-and-adolescence-physical-activity-patterns-on-psychosis-risk-a-general-population-cohort-study
#14
Elina Sormunen, Maiju M Saarinen, Raimo K R Salokangas, Risto Telama, Nina Hutri-Kähönen, Tuija Tammelin, Jorma Viikari, Olli Raitakari, Jarmo Hietala
Schizophrenia spectrum disorders are associated with high morbidity and mortality in somatic diseases. The risk factors of this excess mortality include, e.g., obesity, dietary factors, and physical inactivity, especially after the onset of psychosis, but there are limited early developmental data on these factors in individuals who later develop psychosis. A population-based cohort study "Cardiovascular Risk of Young Finns" started in 1980 with 3596 children and adolescents from six different age groups (3, 6, 9, 12, 15, and 18 years)...
January 13, 2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28576548/defining-the-impact-of-childhood-adversities-on-cognitive-deficits-in-psychosis-an-exploratory-analysis
#15
Inga Schalinski, Martin H Teicher, Almut M Carolus, Brigitte Rockstroh
BACKGROUND: Exposure to adverse childhood experiences (ACE) and cognitive deficits are both prevalent in psychosis. While it has been repeatedly demonstrated that ACE contribute to cognitive dysfunctions, the specific nature of this contribution remains elusive. Recent evidence suggests that types of adversities during critical periods have deleterious effects on brain structures that are important for cognitive functioning. The present study sought to clarify which types of adversities experienced at which time during development aggravate cognitive deficits in psychosis...
May 30, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28562250/neurodevelopment-the-impact-of-nutrition-and-inflammation-during-adolescence-in-low-resource-settings
#16
REVIEW
Janina R Galler, John R Koethe, Robert H Yolken
Approximately 1 out of 5 children worldwide suffers from childhood malnutrition or stunting and associated health conditions, including an increased susceptibility to infections and inflammation. Due to improved early interventions, most children even in low-resource settings now survive early childhood malnutrition, yet exhibit continuing evidence of neurodevelopmental deficits, including poor school achievement and behavioral problems. These conditions are compounded in children who continue to be undernourished throughout the adolescent years...
April 2017: Pediatrics
https://www.readbyqxmd.com/read/28559209/short-post-weaning-social-isolation-induces-long-term-changes-in-the-dopaminergic-system-and-increases-susceptibility-to-psychostimulants-in-female-rats
#17
Carine Lampert, Danusa Mar Arcego, Natividade de Sá Couto-Pereira, Aline Dos Santos Vieira, Ana Paula Toniazzo, Rachel Krolow, Emily Garcia, Deusa Aparecida Vendite, Maria Elisa Calcagnotto, Carla Dalmaz
Childhood and adolescence are sensitive periods of development, marked by high brain maturation and plasticity. Exposure to early life stress, such as social isolation, is able to prompt changes in sensitive brain circuitries, essentially in the mesolimbic dopaminergic system and increase the risk for addictive behaviors later in life. Post-weaning social isolation can stimulate the consumption of rewarding substances, like drugs of abuse and palatable foods. However, most studies analyze long periods of social isolation and very little is known about the effects of a brief social isolation in a sensitive period of development and its association with palatable food on the reward system sensitization...
May 27, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28552358/modular-segregation-of-structural-brain-networks-supports-the-development-of-executive-function-in-youth
#18
Graham L Baum, Rastko Ciric, David R Roalf, Richard F Betzel, Tyler M Moore, Russell T Shinohara, Ari E Kahn, Simon N Vandekar, Petra E Rupert, Megan Quarmley, Philip A Cook, Mark A Elliott, Kosha Ruparel, Raquel E Gur, Ruben C Gur, Danielle S Bassett, Theodore D Satterthwaite
The human brain is organized into large-scale functional modules that have been shown to evolve in childhood and adolescence. However, it remains unknown whether the underlying white matter architecture is similarly refined during development, potentially allowing for improvements in executive function. In a sample of 882 participants (ages 8-22) who underwent diffusion imaging as part of the Philadelphia Neurodevelopmental Cohort, we demonstrate that structural network modules become more segregated with age, with weaker connections between modules and stronger connections within modules...
June 5, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28479531/-structural-brain-development-in-healthy-children-and-adolescents
#19
Izumi Matsudaira, Ryuta Kawashima, Yasuyuki Taki
Brain maturation progresses throughout childhood into adolescence. Investigating the mechanism of brain development during these periods in healthy people is necessary for some clinical purposes. For example, these mechanisms are needed to investigate the mechanism of impaired brain maturation in neurodevelopmental disorders-such as autism spectrum disorders or attention-deficit hyper disorder-and improve early prevention of psychiatric or neurodegenerative diseases like depression or Alzheimer's disease. Voxel-based morphometry (VBM) is an effective way to analyze brain magnetic resonance images (MRI) of children and adolescents, as the brain structures of children and adolescents vary widely depending on their age, sex, and several other factors...
May 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/28456583/protracted-development-of-executive-and-mnemonic-brain-systems-underlying-working-memory-in-adolescence-a-longitudinal-fmri-study
#20
Daniel J Simmonds, Michael N Hallquist, Beatriz Luna
Working memory (WM), the ability to hold information on-line to guide planned behavior, improves through adolescence in parallel with continued maturation of critical brain systems supporting cognitive control. Initial developmental neuroimaging studies with one or two timepoints have provided important though varied results limiting our understanding of which and how neural systems change during this transition into mature WM. In this study, we leverage functional magnetic resonance imaging (fMRI) longitudinal data spanning up to 9 years in 129 normally developing individuals to identify which systems demonstrate growth changes that accompany improvements in WM performance...
April 26, 2017: NeuroImage
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