Search results for "attention deficit disorder"

showing 10 items of 145 documents

Parent of origin effects in attention/deficit hyperactivity disorder (ADHD): analysis of data from the international multicenter ADHD genetics (IMAGE…

2008

Contains fulltext : 71540.pdf (Publisher’s version ) (Closed access) There are conflicting reports suggesting that the parental origin of transmitted risk alleles may play a role in the etiology of attention deficit/hyperactivity disorder (ADHD). A recent report by Hawi and colleagues observed a generalized paternal over-transmission of alleles associated with ADHD. This was not replicated in more recent studies. Using data from a large multicenter study we examined the overall and gene-specific parent of origin effect in 554 independent SNPs across 47 genes. Transmission disequilibrium and explicit parent of origin test were performed using PLINK. Overall parent of origin effect was tested…

ParentsCandidate geneGenetics and epigenetic pathways of disease [NCMLS 6]2804 Cellular and Molecular NeuroscienceMedizinNeuroinformatics [DCN 3]Linkage Disequilibrium2738 Psychiatry and Mental Health0302 clinical medicineRisk FactorsPerception and Action [DCN 1]Genetics(clinical)Genetics (clinical)0303 health sciencesTPH210058 Department of Child and Adolescent PsychiatryPsychiatry and Mental healthData Interpretation StatisticalFunctional Neurogenomics [DCN 2]Clinical psychologyGenetic Markers2716 Genetics (clinical)Single-nucleotide polymorphism610 Medicine & healthMental health [NCEBP 9]Polymorphism Single NucleotideGenetic determinismGenomic disorders and inherited multi-system disorders [IGMD 3]Molecular epidemiology [NCEBP 1]03 medical and health sciencesCellular and Molecular NeuroscienceCognitive neurosciences [UMCN 3.2]Translational research [ONCOL 3]medicineAttention deficit hyperactivity disorderHumansFamilyGenetic Predisposition to Diseaseddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersAlleleAlleles030304 developmental biologyChi-Square DistributionEndocrinology and reproduction [UMCN 5.2]business.industrymedicine.diseaseGenetic defects of metabolism [UMCN 5.1]Multicenter studyAttention Deficit Disorder with HyperactivityEtiologybusiness030217 neurology & neurosurgeryAmerican journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics
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Efficacy of Guanfacine Extended Release in Children and Adolescents with Attention-Deficit/Hyperactivity Disorder and Comorbid Oppositional Defiant D…

2020

OBJECTIVE To assess the efficacy of the non-stimulant guanfacine extended release (GXR) on attention-deficit/hyperactivity disorder (ADHD) symptoms in children and adolescents, with and without comorbid oppositional defiant disorder (ODD). METHODS Data were derived from 4 phase 3, randomized, placebo-controlled trials of dose-optimized GXR monotherapy, in which at least 10% of participants had a diagnosis of comorbid ODD. SPD503-312 and SPD503-316 were 10- to 13-week studies of GXR (1-7 mg/d). SPD503-314 and SPD503-307 were 8-week studies of GXR (1-4 mg/d). Efficacy was assessed using the ADHD Rating Scale IV (ADHD-RS-IV) total scores. RESULTS In total, 1,084 participants were included (SPD…

Pediatricsmedicine.medical_specialtyAdolescentDouble-Blind MethodRating scalemental disordersAdrenergic alpha-2 Receptor AgonistsDevelopmental and Educational PsychologymedicineHumansAttention deficit hyperactivity disorderPooled dataChildPsychiatric Status Rating ScalesDose-Response Relationship Drugbusiness.industrymedicine.diseaseConfidence intervalGuanfacineGuanfacinePsychiatry and Mental healthTreatment OutcomeAttention Deficit Disorder with HyperactivityAttention Deficit and Disruptive Behavior DisordersDelayed-Action PreparationsOppositional defiantPediatrics Perinatology and Child HealthCore symptomsExtended releasebusinessmedicine.drugJournal of Developmental & Behavioral Pediatrics
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Air Pollution Exposure During Pregnancy and Symptoms of Attention Deficit and Hyperactivity Disorder in Children in Europe

2018

Background: Exposure to air pollution during pregnancy may increase attention-deficit/hyperactivity disorder (ADHD) symptoms in children, but findings have been inconsistent. We aimed to study this association in a collaborative study of eight European population-based birth/child cohorts, including 29,127 mother-child pairs. Methods: Air pollution concentrations (nitrogen dioxide [NO2] and particulate matter [PM]) were estimated at the birth address by land-use regression models based on monitoring campaigns performed between 2008 and 2011. We extrapolated concentrations back in time to exact pregnancy periods. Teachers or parents assessed ADHD symptoms at 3-10 years of age. We classified …

Pediatricsmedicine.medical_specialtyEpidemiologyNitrogen DioxideEnvironmental pollution010501 environmental sciences01 natural sciencesOdds03 medical and health sciences0302 clinical medicinePregnancyAir PollutionmedicineHumanslongitudinal studies030212 general & internal medicineChildProspective cohort study0105 earth and related environmental scienceschild developmentparticulate matterInhalation ExposurePregnancybusiness.industryattention deficit disorder with hyperactivityOdds ratiomedicine.diseaseChild developmentConfidence intervalprospective studies3. Good healthEuropemeta-analysisnitrogen oxidesChild PreschoolPrenatal Exposure Delayed EffectsMeta-analysisFemaleenvironmental pollutionAttention Deficit Disorder With Hyperactivity ; Child Development ; Environmental Pollution ; Longitudinal Studies ; Meta-analysis ; Nitrogen Oxides ; Particulate Matter ; Prospective Studiesbusiness
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Aberrant probabilistic reinforcement learning in first-degree relatives of individuals with bipolar disorder

2020

Contains fulltext : 215845.pdf (Publisher’s version ) (Closed access) Background: Motivational dysregulation represents a core vulnerability factor for bipolar disorder. Whether this also comprises aberrant learning of stimulus-reinforcer contingencies is less clear. Methods: To answer this question, we compared healthy first-degree relatives of individuals with bipolar disorder (n = 42) known to convey an increased risk of developing a bipolar spectrum disorder and healthy individuals (n = 97). Further, we investigated the effects of the behavioral activation system (BAS) on reinforcement learning across the entire sample. All participants were assessed with a probabilistic learning task t…

ProbandBipolar Disordereducation03 medical and health sciences0302 clinical medicineRewardNegative feedbackmedicineReinforcement learningHumansSpectrum disorderBipolar disorder111 000 Intention & ActionFirst-degree relativesMotivationAction intention and motor controlBehavioral activationmedicine.disease030227 psychiatrySubstance abusePsychiatry and Mental healthClinical PsychologyAttention Deficit Disorder with HyperactivityPsychologyReinforcement Psychology030217 neurology & neurosurgeryClinical psychology
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Intelligence in DSM-IV combined type attention-deficit/hyperactivity disorder is not predicted by either dopamine receptor/transporter genes or other…

2008

Contains fulltext : 69677.pdf (Publisher’s version ) (Closed access) A major goal of genetic studies of attention deficit hyperactivity disorder (ADHD) is to identify individual characteristics that might help segregate the disorder's inherent heterogeneity. [Mill et al. (2006); Arch Ger Psychiatry 63:462-469] recently reported a potentially important association between two dopamine-related risk polymorphisms (DRD4 variable number tandem repeat (VNTR) in exon 3 and DAT1 VNTR in the 3' UTR) and lowered IQ in ADHD. The objective of the current study was to replicate the [Mill et al. (2006); Arch Ger Psychiatry 63:462-469] findings in a clinical sample and to extend the analysis to a large ra…

ProbandMaleGenetics and epigenetic pathways of disease [NCMLS 6]Intelligence2804 Cellular and Molecular NeuroscienceMedizinNeuroinformatics [DCN 3]Receptors DopamineCohort Studies2738 Psychiatry and Mental Health0302 clinical medicineRisk FactorsPerception and Action [DCN 1]MedicineGenetics(clinical)ChildGenetics (clinical)10058 Department of Child and Adolescent Psychiatry3. Good healthVariable number tandem repeatPsychiatry and Mental healthChild PreschoolFemaleFunctional Neurogenomics [DCN 2]Clinical psychology2716 Genetics (clinical)AdolescentGenotypeSingle-nucleotide polymorphism610 Medicine & healthMental health [NCEBP 9]Genomic disorders and inherited multi-system disorders [IGMD 3]03 medical and health sciencesCellular and Molecular NeuroscienceCognitive neurosciences [UMCN 3.2]mental disordersAttention deficit hyperactivity disorderHumansGenetic Predisposition to Diseaseddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersAlleleRisk factorAssociation (psychology)AllelesDopamine Plasma Membrane Transport Proteinsbusiness.industrymedicine.disease030227 psychiatryGenetic defects of metabolism [UMCN 5.1]Genetic markerAttention Deficit Disorder with Hyperactivitybusiness030217 neurology & neurosurgery
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Genetic heterogeneity in ADHD: DAT1 gene only affects probands without CD

2008

Contains fulltext : 70183.pdf (Publisher’s version ) (Closed access) Previous studies have found heterogeneous association between DAT1-3'-UTR-VNTR and attention deficit hyperactivity disorder (ADHD). Various proportions of conduct disorder (CD) comorbidity in their ADHD samples may partially explain the observational discrepancies. Evidence for this comes from family and twin studies which found ADHD probands with CD (ADHD + CD) are genetically different from those without CD (ADHD - CD). Genotypes of 20 DAT1 markers were analyzed in 576 trios, consisting of 141 ADHD + CD and 435 ADHD - CD. In addition to the classical TDT test, a specific genetic heterogeneity test was performed to identi…

ProbandMaleLinkage disequilibriumGenetics and epigenetic pathways of disease [NCMLS 6]2804 Cellular and Molecular NeuroscienceMedizinComorbidityNeuroinformatics [DCN 3]Linkage Disequilibrium2738 Psychiatry and Mental Health0302 clinical medicineGene FrequencyPerception and Action [DCN 1]Genetics(clinical)ChildGenetics (clinical)GeneticsIncidence10058 Department of Child and Adolescent PsychiatryEuropePsychiatry and Mental healthConduct disorder/dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_beingFemaleFunctional Neurogenomics [DCN 2]Conduct DisorderGenetic Markers2716 Genetics (clinical)GenotypeSingle-nucleotide polymorphism610 Medicine & healthBiologyMental health [NCEBP 9]Polymorphism Single Nucleotidebehavioral disciplines and activitiesGenomic disorders and inherited multi-system disorders [IGMD 3]03 medical and health sciencesGenetic HeterogeneityCellular and Molecular NeuroscienceCognitive neurosciences [UMCN 3.2]SDG 3 - Good Health and Well-beingmental disordersmedicineAttention deficit hyperactivity disorderHumansddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersAlleleAllelesDopamine Plasma Membrane Transport ProteinsChi-Square DistributionGenetic heterogeneitymedicine.diseaseTwin study030227 psychiatryGenetic defects of metabolism [UMCN 5.1]HaplotypesAttention Deficit Disorder with Hyperactivity030217 neurology & neurosurgery
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Separation of Cognitive Impairments in Attention-Deficit/Hyperactivity Disorder Into 2 Familial Factors

2010

Contains fulltext : 89304.pdf (Publisher’s version ) (Open Access) CONTEXT: Attention-deficit/hyperactivity disorder (ADHD) is associated with widespread cognitive impairments, but it is not known whether the apparent multiple impairments share etiological roots or separate etiological pathways exist. A better understanding of the etiological pathways is important for the development of targeted interventions and for identification of suitable intermediate phenotypes for molecular genetic investigations. OBJECTIVES: To determine, by using a multivariate familial factor analysis approach, whether 1 or more familial factors underlie the slow and variable reaction times, impaired response inhi…

ProbandMaleMedizinComorbidityNeuropsychological TestsChoice BehaviorDevelopmental psychology2738 Psychiatry and Mental HealthMOLECULAR-GENETICS0302 clinical medicinePerception and Action [DCN 1]GENETIC INFLUENCES10. No inequalityChildMental Health [NCEBP 9]Cognitive disorderCognition10058 Department of Child and Adolescent PsychiatryPedigreePsychiatry and Mental healthPhenotype1201 Arts and Humanities (miscellaneous)Femalemedicine.symptomPsychologyFunctional Neurogenomics [DCN 2]AdolescentDEFICIT HYPERACTIVITY DISORDERContext (language use)610 Medicine & healthImpulsivityArticleREACTION-TIME PERFORMANCE03 medical and health sciencesArts and Humanities (miscellaneous)medicineReaction TimeAttention deficit hyperactivity disorderHumansINTRA-SUBJECT VARIABILITYFamilyINHIBITORY CONTROLGENOME-WIDE ASSOCIATIONDELAY AVERSIONSiblingsSocial environmentmedicine.diseaseComorbidity030227 psychiatryAttention Deficit Disorder with HyperactivityImpulsive BehaviorRESPONSE VARIABILITYSUSTAINED ATTENTIONCognition DisordersFactor Analysis Statistical030217 neurology & neurosurgery
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The impact of study design and diagnostic approach in a large multi-centre ADHD study: Part 2: Dimensional measures of psychopathology and intelligen…

2011

Contains fulltext : 97437.pdf (Publisher’s version ) (Open Access) BACKGROUND: The International Multi-centre ADHD Genetics (IMAGE) project with 11 participating centres from 7 European countries and Israel has collected a large behavioural and genetic database for present and future research. Behavioural data were collected from 1068 probands with ADHD and 1446 unselected siblings. The aim was to describe and analyse questionnaire data and IQ measures from all probands and siblings. In particular, to investigate the influence of age, gender, family status (proband vs. sibling), informant, and centres on sample homogeneity in psychopathological measures. METHODS: Conners' Questionnaires, St…

ProbandResearch designMale110 012 Social cognition of verbal communicationIntelligencePerception and Actions Mental Health [DCN 1]MedizinSocial Sciencescentre effectsDevelopmental psychology2738 Psychiatry and Mental Health0302 clinical medicinelcsh:PsychiatryMulticenter Studies as Topicsibling designChildATTENTION-DEFICIT/HYPERACTIVITY DISORDERMental DisordersWechsler ScalesWechsler Adult Intelligence Scale10058 Department of Child and Adolescent PsychiatryDiagnostic and Statistical Manual of Mental DisordersPsychiatry and Mental healthPhenotypeConduct disorderResearch DesignRELIABILITYFemaleFamily RelationsPsychologyClinical psychologyPsychopathologyResearch ArticleAdultlcsh:RC435-571DEFICIT HYPERACTIVITY DISORDERTWIN610610 Medicine & health150 000 MR Techniques in Brain Function03 medical and health sciencesmulti-centre studyADHD multi-centre studymedicineCriterion validityAttention deficit hyperactivity disorderHumansADHDGenetic Predisposition to Diseaseddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersSiblingMETAANALYSISFamily HealthPsychiatric Status Rating ScalesCHILD PSYCHIATRIC-PATIENTSSiblingsPARENTmedicine.disease030227 psychiatryAttention Deficit Disorder with HyperactivityCONDUCT DISORDERCRITERION VALIDITY030217 neurology & neurosurgery
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The impact of study design and diagnostic approach in a large multi-centre ADHD study. Part 1: ADHD symptom patterns

2011

Contains fulltext : 96439.pdf (Publisher’s version ) (Open Access) BACKGROUND: The International Multi-centre ADHD Genetics (IMAGE) project with 11 participating centres from 7 European countries and Israel has collected a large behavioural and genetic database for present and future research. Behavioural data were collected from 1068 probands with the combined type of attention deficit/hyperactivity disorder (ADHD-CT) and 1446 'unselected' siblings. The aim was to analyse the IMAGE sample with respect to demographic features (gender, age, family status, and recruiting centres) and psychopathological characteristics (diagnostic subtype, symptom frequencies, age at symptom detection, and com…

QuestionnairesMaleParentsResearch design110 012 Social cognition of verbal communicationPsychometricsPerception and Actions Mental Health [DCN 1]MedizinSocial Sciencescentre effects2738 Psychiatry and Mental Health0302 clinical medicinelcsh:PsychiatrySurveys and QuestionnairesTRANSPORTER GENEQTL LINKAGEsibling designChild10. No inequalityIntelligence TestsIntelligence quotientAge Factors10058 Department of Child and Adolescent PsychiatryATTENTION-DEFICIT/HYPERACTIVITY-DISORDERDiagnostic and Statistical Manual of Mental DisordersEuropePsychiatry and Mental healthResearch DesignConduct disorderFemalePsychologyResearch ArticlePsychopathologymedicine.medical_specialtyPsychometricslcsh:RC435-571DEFICIT HYPERACTIVITY DISORDER610 Medicine & health150 000 MR Techniques in Brain Functionmulti-centre study03 medical and health sciencesSex FactorsADHD multi-centre studymedicineHumansADHDAttention deficit hyperactivity disorderddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersGENOME-WIDE ASSOCIATIONSiblingPsychiatryPsychiatric Status Rating ScalesSiblingsmedicine.disease030227 psychiatryQUANTITATIVE TRAITAttention Deficit Disorder with HyperactivitySample size determinationCONDUCT DISORDERPSYCHIATRIC COMORBIDITYFOLLOW-UPinformant effectsSCAN030217 neurology & neurosurgery
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Risk of mortality among children, adolescents, and adults with autism spectrum disorder or attention deficit hyperactivity disorder and their first-d…

2017

BACKGROUND: Autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD) are childhood onset neurodevelopmental disorders that may persist into adulthood. ASD and ADHD tend to run in families and may have a significant negative impact on the health and longevity of those with the disorder and their relatives. The aim of this study will be to analyze the risk of mortality among children, adolescents, and adults with ASD or ADHD and their first-degree relatives. METHODS/DESIGN: We will conduct a systematic review and meta-analysis of observational studies. Searches of PubMed/MEDLINE, EMBASE, PsycINFO, SCOPUS, and ISI Web of Science will be used to identify epidemiologica…

Research designMaleEpidemiologyAutism Spectrum DisorderMedicine (miscellaneous)lcsh:MedicineTrastorns de l'atencióAdolescents0302 clinical medicineCause of DeathRisk of mortalityProtocol030212 general & internal medicineChildChild developmentNeurodevelopmental disordersAutism spectrum disorders3. Good healthAutism spectrum disorderResearch DesignMeta-analysisFemaleInfantsCohort studyAdultRiskmedicine.medical_specialtyAdolescentAttention deficit hyperactivity disorder03 medical and health sciencesBibliometriamental disordersmedicineMortalitatAttention deficit hyperactivity disorderAdultsHumansFamilyFirst-degree relativesMortalityPsychiatrybusiness.industrylcsh:Rmedicine.diseaseMeta-analysisAttention Deficit Disorder with HyperactivitySystematic reviewObservational studyAutismebusiness030217 neurology & neurosurgerySystematic Reviews as Topic
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