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Attention Deficit Hyperactivity Disorder

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https://www.readbyqxmd.com/read/28640990/opiate-antagonists-do-not-interfere-with-the-clinical-benefits-of-stimulants-in-adhd-a-double-blind-placebo-controlled-trial-of-the-mixed-opioid-receptor-antagonist-naltrexone
#1
Thomas J Spencer, Pradeep Bhide, Jinmin Zhu, Stephen V Faraone, Maura Fitzgerald, Amy M Yule, Mai Uchida, Andrea E Spencer, Anna M Hall, Ariana J Koster, Joseph Biederman
OBJECTIVE: Methylphenidate activates μ-opioid receptors, which are linked to euphoria. μ-Opioid antagonists, such as naltrexone, may attenuate the euphoric effects of stimulants, thereby minimizing their abuse potential. This study assessed whether the combination of naltrexone with methylphenidate is well-tolerated while preserving the clinical benefits of stimulants in subjects with attention-deficit/hyperactivity disorder (ADHD). METHODS: We conducted a 6-week, double-blind, placebo-controlled, randomized clinical trial of naltrexone in adults with DSM-IV ADHD receiving open treatment with a long-acting formulation of methylphenidate from January 2013 to July 2015...
June 20, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28640989/stimulant-treatment-trajectories-are-associated-with-neural-reward-processing-in-attention-deficit-hyperactivity-disorder
#2
Lizanne J S Schweren, Annabeth Groenman, Daniel von Rhein, Wouter Weeda, Stephen F Faraone, Marjolein Luman, Hanneke van Ewijk, Dirk J Heslenfeld, Barbara Franke, Jan K Buitelaar, Jaap Oosterlaan, Pieter J Hoekstra, Catharina A Hartman
OBJECTIVE: The past decades have seen a surge in stimulant prescriptions for the treatment of attention-deficit/hyperactivity disorder (ADHD). Stimulants acutely alleviate symptoms and cognitive deficits associated with ADHD by modulating striatal dopamine neurotransmission and induce therapeutic changes in brain activation patterns. Long-term functional changes after treatment are unknown, as long-term studies are scarce and have focused on brain structure. In this observational study (2009-2012), we investigated associations between lifetime stimulant treatment history and neural activity during reward processing...
June 20, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28636895/neurocognitive-characteristics-of-youth-with-noncomorbid-and-comorbid-forms-of-conduct-disorder-and-attention-deficit-hyperactivity-disorder
#3
Andrea L Glenn, Rheanna J Remmel, Min Yee Ong, Nikki S J Lim, Rebecca P Ang, A Hunter Threadgill, Nicole Ryerson, Adrian Raine, Daniel Fung, Yoon Phaik Ooi
OBJECTIVE: Studies investigating neurocognitive deficits in youth with conduct disorder (CD) and attention deficit hyperactivity disorder (ADHD) are often confounded by the high rates of comorbidity between the two. METHOD: Neurocognitive functioning was examined in three diagnostic groups (ADHD only, CD only, comorbid ADHD and CD) matched by age, sex, IQ, and medication status (n=28-32 per group). RESULTS: No significant differences emerged between the diagnostic groups on measures of risk-taking or response inhibition...
June 8, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/28635543/anxiety-modulates-the-relation-between-attention-deficit-hyperactivity-disorder-severity-and-working-memory-related-brain-activity
#4
Dennis van der Meer, Pieter J Hoekstra, Daan van Rooij, Anderson M Winkler, Hanneke van Ewijk, Dirk J Heslenfeld, Jaap Oosterlaan, Stephen V Faraone, Barbara Franke, Jan K Buitelaar, Catharina A Hartman
OBJECTIVES: Individuals with attention-deficit/hyperactivity disorder (ADHD) often have heightened levels of anxiety, which has been associated with worse performance on working memory tasks. Knowledge of the neural pathways underlying the combined presence of ADHD and anxiety may aid in a better understanding of their co-occurrence. Therefore, we investigated how anxiety modulates the effect of ADHD severity on neural activity during a visuospatial working memory (VSWM) task. METHODS: Neuroimaging data were available for 371 adolescents and young adults participating in the multicentre cohort study NeuroIMAGE (average age 17...
March 1, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28634439/inconsistency-in-abnormal-brain-activity-across-cohorts-of-adhd-200-in-children-with-attention-deficit-hyperactivity-disorder
#5
Jian-Bao Wang, Li-Jun Zheng, Qing-Jiu Cao, Yu-Feng Wang, Li Sun, Yu-Feng Zang, Hang Zhang
Many papers have shown results from the multi-site dataset of resting-state fMRI (rs-fMRI) in attention deficit hyperactivity disorder (ADHD), a data-sharing project named ADHD-200. However, few studies have illustrated that to what extent the pooled findings were consistent across cohorts. The present study analyzed three voxel-wise whole-brain metrics, i.e., amplitude of low-frequency fluctuation (ALFF), regional homogeneity (ReHo), and degree centrality (DC) based on the pooled dataset as well as individual cohort of ADHD-200...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28633952/chronic-methylphenidate-regulates-genes-and-proteins-mediating-neuroplasticity-in-the-juvenile-rat-brain
#6
Emmanuel Quansah, Tiziana Sgamma, Estabraq Jaddoa, Tyra S C Zetterström
Methylphenidate (MPH) is the front-line psychostimulant medication prescribed for alleviating the symptoms associated with attention deficit hyperactivity disorder (ADHD) in children. Here, we investigated the effects of chronic MPH (2.0mg/kg, twice daily for 15 days) exposure to young rats (20-25days old at start of treatment) on the expression of genes and proteins associated with neuroplasticity, such as activity regulated cytoskeleton-associated protein (Arc), insulin receptor substrate protein 53 (IRSp53), cell division control protein 42 (Cdc42), and actin-related protein 2 (Arp2)...
June 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28633299/structural-covariance-networks-in-children-with-autism-or-adhd
#7
R A I Bethlehem, R Romero-Garcia, E Mak, E T Bullmore, S Baron-Cohen
Background: While autism and attention-deficit/hyperactivity disorder (ADHD) are considered distinct conditions from a diagnostic perspective, clinically they share some phenotypic features and have high comorbidity. Regardless, most studies have focused on only one condition, with considerable heterogeneity in their results. Taking a dual-condition approach might help elucidate shared and distinct neural characteristics. Method: Graph theory was used to analyse topological properties of structural covariance networks across both conditions and relative to a neurotypical (NT; n = 87) group using data from the ABIDE (autism; n = 62) and ADHD-200 datasets (ADHD; n = 69)...
June 13, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28631964/evidence-based-assessment-of-adhd-diagnosis-in-children-and-adolescents
#8
Xuechun Zhou, Cecil R Reynolds, Jianjun Zhu, Randy W Kamphaus, Ou Zhang
This study illustrates the accuracy and efficiency of using an evidence-based assessment (EBA) strategy for diagnosis of attention-deficit/hyperactivity disorder (ADHD) by integrating the scale scores obtained on BASC-3 teacher and parent rating scales. The examined process used empirical diagnostic likelihood ratios (DLRs) derived from a sample of children with ADHD (N = 339) matched on demographic characteristics from the normative sample. The results show that behavioral scales of executive functioning and functional communication provided incremental utility in ADHD diagnosis...
February 22, 2017: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/28631372/patient-and-provider-characteristics-related-with-prescribing-of-adhd-medication-nationwide-health-insurance-claims-database-study-in-korea
#9
Inmyung Song, Mo Se Lee, Eui-Kyung Lee, Ju-Young Shin
BACKGROUND: Little is known about the association between prescribing of attention deficit hyperactivity disorder (ADHD) medication and the patient's age, gender, and type of medical institution in Asia region. INTRODUCTION: This study investigates the prevalence and factors of diagnosis and pharmacological treatment of ADHD in the pediatric population. METHODS: Using the Korea Health Insurance database, study participants were identified as pediatric patients (≤17 years) with at least 1 diagnosis of ADHD (ICD-10, F90) from January 1, 2007 to December 31, 2011...
June 20, 2017: Asia-Pacific Psychiatry: Official Journal of the Pacific Rim College of Psychiatrists
https://www.readbyqxmd.com/read/28631099/discontinuation-of-pharmacological-treatment-of-children-and-adolescents-with-attention-deficit-hyperactivity-disorder-meta-analysis-of-63-studies-enrolling-11-788-patients
#10
M Riera, X Castells, A Tobias, R Cunill, L Blanco, D Capellà
BACKGROUND: The risk-benefit balance of pharmacological treatment for children and adolescents with ADHD and the factors that moderate this relationship are unclear. METHODS: A systematic review and meta-analysis of randomised, placebo-controlled clinical trials (RPCCTs) investigating the efficacy of pharmacological treatment in children or adolescents with ADHD was carried out. Meta-analysis of treatment discontinuation, clinician-, parent- and teacher-rated efficacy and adverse events was performed...
June 19, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28630890/drd4-gene-polymorphisms-as-a-risk-factor-for-children-with-attention-deficit-hyperactivity-disorder-in-iranian-population
#11
Seyed Mahmoud Tabatabaei, Shahrokh Amiri, Sara Faghfouri, Seyed Gholamreza Noorazar, Shahin AbdollahiFakhim, Ali Fakhari
BACKGROUND AND OBJECTIVE: Dopamine dysfunction is known to be associated with attention deficit hyperactivity disorder (ADHD). Dopamine D4 receptor gene (DRD4) is one of the important genes in this pathway. This study intended to investigate the variable number of tandem repeats (VNTR) in exon 3 of the DRD4 gene in Iranian children and adolescents. MATERIALS AND METHODS: In this study, 130 children with ADHD, aged 6-14 years, and 130 healthy children, within the same age range, were enrolled...
2017: International Scholarly Research Notices
https://www.readbyqxmd.com/read/28630479/attention-cognitive-control-and-motivation-in-adhd-linking-event-related-brain-potentials-and-dna-methylation-patterns-in-boys-at-early-school-age
#12
Hartmut Heinrich, Juliane Grunitz, Valeska Stonawski, Stefan Frey, Simone Wahl, Björn Albrecht, Tamme W Goecke, Matthias W Beckmann, Johannes Kornhuber, Peter A Fasching, Gunther H Moll, Anna Eichler
In order to better understand the underpinnings of attention-deficit/hyperactivity disorder (ADHD), we targeted the relationship of attentional, cognitive control and motivational processes with DNA methylation patterns of 60 candidate genes in boys at early school age. Participants (6 to 8 years; N = 82) were selected from a German longitudinal cohort (FRANCES). ADHD-related behaviour was assessed via maternal ratings. Performance and event-related potential measures (inter alia Cue-P3 and Nogo-P3), which were recorded in a motivational go/nogo task, indicated diminished attentional orienting, reduced inhibitory response control and a larger motivational effect on performance in ADHD already at this relatively young age...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28628794/neurological-soft-signs-but-not-theory-of-mind-and-emotion-recognition-deficit-distinguished-children-with-adhd-from-healthy-control
#13
Mariabernarda Pitzianti, Clementina Grelloni, Livia Casarelli, Elisa D'Agati, Simonetta Spiridigliozzi, Paolo Curatolo, Augusto Pasini
Attention Deficit Hyperactivity Disorder (ADHD) is associated with social cognition impairment, executive dysfunction and motor abnormalities, consisting in the persistence of neurological soft signs (NSS). Theory of mind (ToM) and emotion recognition (ER) deficit of children with ADHD have been interpreted as a consequence of their executive dysfunction, particularly inhibitory control deficit. To our knowledge, there are not studies that evaluate the possible correlation between the ToM and ER deficit and NSS in the population with ADHD, while this association has been studied in other psychiatric disorders, such as schizophrenia...
June 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28628557/excessive-hemodynamic-activity-in-the-superior-frontal-cortex-during-the-flanker-task-in-children-with-attention-deficit-hyperactivity-disorder
#14
Kota Suzuki, Yasuko Okumura, Yosuke Kita, Yuhei Oi, Yushiro Yamashita, Takaaki Goto, Masumi Inagaki
Near-infrared spectroscopy studies in children with attention deficit hyperactivity disorder (ADHD) have shown excessive prefrontal activity responsible for coping with interference. However, it is possible that the previous results were influenced by verbal, reading, and memory developments. The flanker task is an interference task that does not require a verbal response, reading, or memorization. We examined activity in the superior frontal cortex (SFC) during the flanker task in 12 children with ADHD and 14 children with typical development using near-infrared spectroscopy...
June 16, 2017: Neuroreport
https://www.readbyqxmd.com/read/28628269/effect-of-food-intake-on-the-pharmacokinetics-of-a-novel-methylphenidate-extended-release-oral-suspension-for-attention-deficit-hyperactivity-disorder
#15
Floyd R Sallee, Donna R Palumbo, Richat Abbas, Sally A Berry, Shivanand P Puthli, Kalyan K Kathala
We conducted an open-label, single-dose, randomized, crossover study in healthy adults to assess the impact of food on the bioavailability of 60 mg methylphenidate extended-release oral suspension (MEROS; Quillivant XR™)-a long-acting stimulant for the treatment of attention deficit hyperactivity disorder-by comparing the pharmacokinetic parameters under fed and fasting conditions. When MEROS 60 mg was administered under fed conditions compared with fasting conditions, the exposure of methylphenidate (d enantiomer) was higher, with a mean area under the plasma concentration-vs-time curve (AUC)0-t of 160...
June 19, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28625946/educational-needs-of-epileptologists-regarding-psychiatric-comorbidities-of-the-epilepsies-a-descriptive-quantitative-survey
#16
Marco Mula, Esper Cavalheiro, Alla Guekht, Andres M Kanner, Hyang Woon Lee, Cigdem Ozkara, Alfredo Thomson, Sarah J Wilson
Psychiatric disorders are relatively frequent comorbidities in epilepsy and they have an impact on morbidity, mortality, and quality of life. This is a report from the Task Force on Education of the ILAE Commission on Neuropsychiatry based on a survey about educational needs of epileptologists regarding management of the psychiatric comorbidities of epilepsy. The Task Force designed a quantitative questionnaire to survey the self-perceived confidence of child and adult epileptologists and psychiatrists in managing major psychiatric comorbidities of epilepsy to identify: (1) critical areas of improvement from a list of skills that are usually considered necessary for effective management of these conditions, and (2) the preferred educational format for improving these skills...
June 19, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28624962/the-scope-and-nature-of-reading-comprehension-impairments-in-school-aged-children-with-higher-functioning-autism-spectrum-disorder
#17
Nancy S McIntyre, Emily J Solari, Joseph E Gonzales, Marjorie Solomon, Lindsay E Lerro, Stephanie Novotny, Tasha M Oswald, Peter C Mundy
This study of 8-16-year-olds was designed to test the hypothesis that reading comprehension impairments are part of the social communication phenotype for many higher-functioning students with autism spectrum disorder (HFASD). Students with HFASD (n = 81) were compared to those with high attention-deficit/hyperactivity disorder symptomatology (ADHD; n = 39), or typical development (TD; n = 44), on a comprehensive battery of oral language, word recognition, and reading comprehension measures. Results indicated that students with HFASD performed significantly lower on the majority of the reading and language tasks as compared to TD and ADHD groups...
June 17, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28624582/further-replication-of-the-synergistic-interaction-between-lphn3-and-the-ntad-gene-cluster-on-adhd-and-its-clinical-course-throughout-adulthood
#18
Djenifer B Kappel, Jaqueline B Schuch, Diego L Rovaris, Bruna S da Silva, Renata B Cupertino, Cristina Winkler, Stefania P Teche, Eduardo S Vitola, Rafael G Karam, Luis A Rohde, Claiton H D Bau, Eugenio H Grevet, Nina R Mota
Attention-Deficit/Hyperactivity Disorder (ADHD) is a common and highly heritable neuropsychiatric disorder. Despite the high heritability, the unraveling of specific genetic factors related to ADHD is hampered by its considerable genetic complexity. Recent evidence suggests that gene-gene interactions can explain part of this complexity. We examined the impact of strongly supported interaction effects between the LPHN3 gene and the NTAD gene cluster (NCAM1-TTC12-ANKK1-DRD2) in a 7-year follow-up of a clinical sample of adults with ADHD, addressing associations with susceptibility, symptomatology and stability of diagnosis...
June 14, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28622159/weeding-out-the-justification-for-marijuana-treatment-in-patients-with-developmental-and-behavioral-conditions
#19
Theodora Nelson, Yi Hui Liu, Kara S Bagot, Martin T Stein
Alex is a 13-year-old adolescent with high-functioning autism spectrum disorder, attention-deficit/hyperactivity disorder (ADHD)-combined type, anxiety, and depression. He has been resistant to engaging in therapy and treatment with various medications has been unsuccessful. Alex's parents are concerned about his anxiety, isolation, oppositional behaviors, academic underachievement, truancy, and substance use. A recent altercation with his stepfather led to a police intervention and a brief removal of Alex from the home...
June 15, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28621145/evaluating-the-hierarchical-structure-of-adhd-symptoms-and-invariance-across-age-and-gender
#20
Alexandra Sturm, James T McCracken, Li Cai
The bifactor model of attention-deficit/hyperactivity disorder (ADHD) has been extensively explored, yet the tendency of the bifactor model to overfit data necessitates investigation of alternative, more parsimonious models, such as a modified bifactor structure. The present study used item response theory to compare unidimensional, correlated factors, bifactor, and modified bifactor models of ADHD symptoms in a clinical sample of youth ( N = 1,612) and examined differential item functioning (DIF) by age (<11 and ≥11 years) and gender...
June 1, 2017: Assessment
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