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https://www.readbyqxmd.com/read/28938222/inter-hemispherical-asymmetry-in-default-mode-functional-connectivity-and-baiap2-gene-are-associated-with-anger-expression-in-adhd-adults
#1
R Hasler, M G Preti, D E Meskaldji, J Prados, W Adouan, C Rodriguez, S Toma, N Hiller, T Ismaili, J Hofmeister, I Sinanaj, P Baud, S Haller, P Giannakopoulos, S Schwartz, N Perroud, D Van De Ville
Attention deficit hyperactivity disorder (ADHD) is accompanied by resting-state alterations, including abnormal activity, connectivity and asymmetry of the default-mode network (DMN). Concurrently, recent studies suggested a link between ADHD and the presence of polymorphisms within the gene BAIAP2 (i.e., brain-specific angiogenesis inhibitor 1-associated protein 2), known to be differentially expressed in brain hemispheres. The clinical and neuroimaging correlates of this polymorphism are still unknown. We investigated the association between BAIAP2 polymorphisms and DMN functional connectivity (FC) asymmetry as well as behavioral measures in ADHD adults...
September 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28938219/age-dependent-effects-of-acute-methylphenidate-on-amygdala-reactivity-in-stimulant-treatment-naive-patients-with-attention-deficit-hyperactivity-disorder
#2
Marco A Bottelier, Anouk Schrantee, Bart Ferguson, Hyke G H Tamminga, Cheima Bouziane, J J Sandra Kooij, Michiel B de Ruiter, Liesbeth Reneman
In the present study, we investigate whether methylphenidate (MPH) affects emotional processing and whether this effect is modulated by age. We measured amygdala reactivity with functional Magnetic Resonance Imaging (fMRI) during processing of angry and fearful facial expressions in male stimulant treatment-naive patients with ADHD (N = 35 boys; N = 46 men) and 23 healthy control subjects (N = 11 boys; N = 12 men). In ADHD patients, we also measured amygdala reactivity 90min after an acute oral challenge with MPH (0...
September 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28938009/altering-neuronal-excitability-to-preserve-network-connectivity-in-a-computational-model-of-alzheimer-s-disease
#3
Willem de Haan, Elisabeth C W van Straaten, Alida A Gouw, Cornelis J Stam
Neuronal hyperactivity and hyperexcitability of the cerebral cortex and hippocampal region is an increasingly observed phenomenon in preclinical Alzheimer's disease (AD). In later stages, oscillatory slowing and loss of functional connectivity are ubiquitous. Recent evidence suggests that neuronal dynamics have a prominent role in AD pathophysiology, making it a potentially interesting therapeutic target. However, although neuronal activity can be manipulated by various (non-)pharmacological means, intervening in a highly integrated system that depends on complex dynamics can produce counterintuitive and adverse effects...
September 22, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28937960/prenatal-exposure-to-nonpersistent-endocrine-disruptors-and-behavior-in-boys-at-3-and-5-years
#4
Claire Philippat, Dorothy Nakiwala, Antonia M Calafat, Jérémie Botton, Maria De Agostini, Barbara Heude, Rémy Slama
BACKGROUND: Sex-specific associations have been reported between phthalates, bisphenol A (BPA), and child behavior. No data on large study populations are available for other phenols with possible endocrine-disrupting properties. OBJECTIVES: We aimed to study associations between prenatal exposure to phthalates and several phenols on behavior among male infants. METHODS: We quantified 11 phthalate metabolites and nine phenols (four parabens, benzophenone-3, BPA, two dichlorophenols, triclosan) in spot urine samples collected during pregnancy among EDEN cohort mothers who delivered a boy...
September 15, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28937938/anxiety-and-depression-among-college-students-with-attention-deficit-hyperactivity-disorder-adhd-cross-informant-sex-and-subtype-differences
#5
Jason M Nelson, Spencer W Liebel
OBJECTIVE: This study examined symptoms of anxiety and depression among college students with attention-deficit/hyperactivity disorder (ADHD). PARTICIPANTS: Data were collected between March 2011 and March 2016 from 150 college students with ADHD and 150 college students without ADHD. METHOD: Participants with ADHD were compared to a sex- and ethnicity-matched control group. For the ADHD group, parent and self-report of anxiety and depression were also compared...
September 22, 2017: Journal of American College Health: J of ACH
https://www.readbyqxmd.com/read/28936622/prevalence-of-psychopathology-in-bipolar-high-risk-offspring-and-siblings-a-meta-analysis
#6
REVIEW
Phoebe Lau, David J Hawes, Caroline Hunt, Andrew Frankland, Gloria Roberts, Philip B Mitchell
This meta-analysis aimed to update existing data on the comparison of prevalence rates of psychopathology primarily among offspring with at least one parent with bipolar disorder (BD) and offspring of parents without psychiatric illness. Seventeen studies were derived from a systematic search of PsychInfo, Medline, Scopus and Embase. Inclusion criteria were use of a control offspring group, standardized diagnostic procedures and reporting of clear frequency data. Risk of psychopathology was estimated by aggregating frequency data from selected studies...
September 21, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28936175/pharmacokinetics-and-pharmacodynamics-of-lisdexamfetamine-compared-with-d-amphetamine-in-healthy-subjects
#7
Patrick C Dolder, Petra Strajhar, Patrick Vizeli, Felix Hammann, Alex Odermatt, Matthias E Liechti
Rationale: Lisdexamfetamine is a prodrug of D-amphetamine used for the treatment of attention-deficit/hyperactivity disorder (ADHD). Lisdexamfetamine is thought to have a prolonged pharmacokinetic profile compared with oral D-amphetamine, possibly associated with lower drug liking and a lower risk of oral misuse. However, differences in the pharmacokinetics and pharmacodynamics of lisdexamfetamine and D-amphetamine have not been directly compared. Methods: Equimolar doses of D-amphetamine (40 mg) and lisdexamfetamine (100 mg), and placebo were administered in 24 healthy subjects in a randomized, double-blind, placebo-controlled, cross-over study...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28936162/rna-sequencing-analysis-reveals-a-regulatory-role-for-transcription-factor-fezf2-in-the-mature-motor-cortex
#8
Alison J Clare, Hollie E Wicky, Ruth M Empson, Stephanie M Hughes
Forebrain embryonic zinc finger (Fezf2) encodes a transcription factor essential for the specification of layer 5 projection neurons (PNs) in the developing cerebral cortex. As with many developmental transcription factors, Fezf2 continues to be expressed into adulthood, suggesting it remains crucial to the maintenance of neuronal phenotypes. Despite the continued expression, a function has yet to be explored for Fezf2 in the PNs of the developed cortex. Here, we investigated the role of Fezf2 in mature neurons, using lentiviral-mediated delivery of a shRNA to conditionally knockdown the expression of Fezf2 in the mouse primary motor cortex (M1)...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28936005/unmet-medication-coverage-needs-among-adults-with-attention-deficit-hyperactivity-disorder-adhd
#9
Thomas E Brown, Emuella Flood, Phillip Sarocco, Norman Atkins, Alexandra Khachatryan
No abstract text is available yet for this article.
September 15, 2017: Psychopharmacology Bulletin
https://www.readbyqxmd.com/read/28936004/persisting-psychosocial-impairments-in-adults-being-treated-with-medication-for-attention-deficit-hyperactivity-disorder
#10
Thomas E Brown, Emuella Flood, Phillip Sarocco, Norman Atkins, Alexandra Khachatryan
No abstract text is available yet for this article.
September 15, 2017: Psychopharmacology Bulletin
https://www.readbyqxmd.com/read/28935662/adult-disinhibited-social-engagement-in-adoptees-exposed-to-extreme-institutional-deprivation-examination-of-its-clinical-status-and-functional-impact
#11
Mark Kennedy, Jana Kreppner, Nicky Knights, Robert Kumsta, Barbara Maughan, Dennis Golm, Jonathan Hill, Michael Rutter, Wolff Schlotz, Edmund Sonuga-Barke
BackgroundEarly-life institutional deprivation produces disinhibited social engagement (DSE). Portrayed as a childhood condition, little is known about the persistence of DSE-type behaviours into, presentation during, and their impact on, functioning in adulthood.AimsWe examine these issues in the young adult follow-up of the English and Romanian Adoptees study.MethodA total of 122 of the original 165 Romanian adoptees who had spent up to 43 months as children in Ceauşescu's Romanian orphanages and 42 UK adoptees were assessed for DSE behaviours, neurodevelopmental and mental health problems, and impairment between ages 2 and 25 years...
September 21, 2017: British Journal of Psychiatry: the Journal of Mental Science
https://www.readbyqxmd.com/read/28935587/glutamatergic-synapses-in-neurodevelopmental-disorders
#12
REVIEW
Edoardo Moretto, Luca Murru, Giuseppe Martano, Jenny Sassone, Maria Passafaro
Neurodevelopmental disorders (NDDs) are a group of diseases whose symptoms arise during childhood or adolescence and that impact several higher cognitive functions such as learning, sociability and mood. Accruing evidence suggests that a shared pathogenic mechanism underlying these diseases is the dysfunction of glutamatergic synapses. We summarize present knowledge on autism spectrum disorders (ASD), intellectual disability (ID), Down syndrome (DS), Rett syndrome (RS) and attention-deficit hyperactivity disorder (ADHD), highlighting the involvement of glutamatergic synapses and receptors in these disorders...
September 18, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28935585/developmental-exposure-to-low-concentrations-of-two-brominated-flame-retardants-bde-47-and-bde-99-causes-life-long-behavioral-alterations-in-zebrafish
#13
Lilah Glazer, Corinne N Wells, Meghan Drastal, Kathryn-Ann Odamah, Richard E Galat, Mamta Behl, Edward D Levin
BACKGROUND: Polybrominated diphenyl ethers (PBDEs) were widely used as flame retardants until the early 2000s, mainly in home furnishings and electronics. The persistence of PBDEs in the environment leads to continued ubiquitous exposure to low levels, with infants and children experiencing higher exposures than adults. Accumulating evidence suggest that low-level exposures during early life stages can affect brain development and lead to long-term behavioral impairments. We investigated the effects of zebrafish exposure to low doses of the two prominent PBDEs; 2,2',4,4',5,-Pentabromodiphenyl ether (BDE-99) and 2,2',4,4',-Tetrabromodiphenyl ether (BDE-47), during embryo-development on short- and long-term behavioral endpoints...
September 18, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28935267/methylphenidate-doses-in-attention-deficit-hyperactivity-disorder-and-comorbid-substance-use-disorders
#14
Charlotte Skoglund, Lena Brandt, Brian D'Onofrio, Henrik Larsson, Johan Franck
Patients with Attention Deficit/Hyperactivity Disorder (ADHD) and comorbid Substance Use Disorders (SUD) are increasingly being treated with central stimulant medication despite limited evidence for its effectiveness. Lack of longitudinal follow-up studies of dosing and adverse effects has resulted in conflicting treatment guidelines. This study aims to explore whether individuals with ADHD and comorbid SUD are treated with higher stimulant doses than individuals with ADHD only, and whether doses increase over time as a sign of tolerance, a core symptom of addiction...
September 18, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28934990/x-linked-ichthyosis-associated-with-psychosis-and-behavioral-abnormalities-a-case-report
#15
Amna Malik, Ahmed Bait Amer, Mohammed Salama, Bander Haddad, Muhammad T Alrifai, Mohammed Al Balwi, William Davies, Wafaa Eyaid
BACKGROUND: X-linked ichthyosis is a dermatological condition caused by deficiency for the enzyme steroid sulfatase. Previously, X-linked ichthyosis/steroid sulfatase deficiency has been associated with developmental and neurological phenotypes. Here, we show for the first time, that X-linked ichthyosis may be comorbid with an additional psychiatric phenotype (psychosis). CASE PRESENTATION: We report the case of an 11-year-old Saudi Arabian boy with X-linked ichthyosis associated with psychosis, mental retardation, autism spectrum disorder, inattentive attention deficit hyperactivity disorder, and epilepsy...
September 22, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28934711/alterations-of-larval-photo-dependent-swimming-responses-pdr-new-endpoints-for-rapid-and-diagnostic-screening-of-aquatic-contamination
#16
Luis Colón-Cruz, Lauren Kristofco, Jonathan Crooke-Rosado, Agnes Acevedo, Aranza Torrado, Bryan W Brooks, María A Sosa, Martine Behra
Detection and toxicity assessment of waterborne contaminants are crucial for protecting human health and the environment. Development of easy-to-implement, rapid and cost-effective tools to measure anthropogenic effects on watersheds are critical for responsible management, particularly in times of increasing development and urbanization. Traditionally, environmental toxicology has focused on limited endpoints, such as lethality and fertility, which are directly affecting population levels. However, more sensitive readings are needed to assess sub-lethal effects...
September 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28934389/the-16p11-2-homologs-fam57ba-and-doc2a-generate-certain-brain-and-body-phenotypes
#17
Jasmine M McCammon, Alicia Blaker-Lee, Xiao Chen, Hazel Sive
Deletion of the 16p11.2 CNV affects 25 core genes and is associated with multiple symptoms affecting brain and body, including seizures, hyperactivity, macrocephaly, and obesity. Available data suggest that most symptoms are controlled by haploinsufficiency of two or more 16p11.2 genes. To identify interacting 16p11.2 genes, we used a pairwise partial loss of function antisense screen for embryonic brain morphology, using the accessible zebrafish model. fam57ba, encoding a ceramide synthase, was identified as interacting with the doc2a gene, encoding a calcium-sensitive exocytosis regulator, a genetic interaction not previously described...
October 1, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28934250/changes-in-striatal-activity-and-functional-connectivity-in-a-mouse-model-of-huntington-s-disease
#18
Magali Cabanas, Fares Bassil, Nicole Mons, Maurice Garret, Yoon H Cho
Hereditary Huntington's disease (HD) is associated with progressive motor, cognitive and psychiatric symptoms. A primary consequence of the HD mutation is the preferential loss of medium spiny projection cells with relative sparing of local interneurons in the striatum. In addition, among GABAergic striatal projection cells, indirect pathway cells expressing D2 dopamine receptors are lost earlier than direct pathway cells expressing D1 receptors. To test in vivo the functional integrity of direct and indirect pathways as well as interneurons in the striatum of male R6/1 transgenic mice, we assessed their c-Fos expression levels induced by a striatal-dependent cognitive task and compared them with age-matched wild-type littermates...
2017: PloS One
https://www.readbyqxmd.com/read/28933918/pharmacokinetics-of-a-new-amphetamine-extended-release-oral-suspension-in-children-with-attention-deficit-hyperactivity-disorder
#19
Carolyn R Sikes, Russ L McMahen, Jeffrey G Stark, Dorothy Engelking
OBJECTIVE: An extended-release amphetamine (AMP) oral suspension has been developed to facilitate medication ingestion and dose titration. This study sought to determine the pharmacokinetic (PK) profile of this new formulation in children with attention-deficit/hyperactivity disorder (ADHD). METHODS: This was an open-label, single-period, PK study in 29 pediatric participants with ADHD. Participants were stratified into age groups 1 (6-7 years), 2 (8-9 years), and 3 (10-12 years), and dosed with 15 mL extended-release AMP liquid suspension (equivalent to 30 mg mixed AMP salts) after an overnight fast...
September 21, 2017: Journal of Child and Adolescent Psychopharmacology
https://www.readbyqxmd.com/read/28933224/progesterone-sharpens-temporal-response-profiles-of-sensory-cortical-neurons-in-animals-exposed-to-traumatic-brain-injury
#20
Benjamin J Allitt, Victoria P A Johnstone, Katrina L Richards, Edwin B Yan, Ramesh Rajan
Traumatic brain injury (TBI) initiates a cascade of pathophysiological changes that are both complex and difficult to treat. Progesterone (P4) is a neuroprotective treatment option that has shown excellent preclinical benefits in the treatment of TBI, but these benefits have not translated well in the clinic. We have previously shown that P4 exacerbates the already hypoactive upper cortical responses in the short-term post-TBI and does not reduce upper cortical hyperactivity in the long term, and we concluded that there is no tangible benefit to sensory cortex firing strength...
July 2017: Cell Transplantation
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