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Masi G, Carucci S, Muratori P, Balia C, Sesso G, Milone A. Contemporary diagnosis and treatment of conduct disorder in youth. Expert Rev Neurother 2023; 23:1277-1296. [PMID: 37853718 DOI: 10.1080/14737175.2023.2271169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 10/04/2023] [Indexed: 10/20/2023]
Abstract
INTRODUCTION Conduct disorder (CD) is characterized by repetitive and persistent antisocial behaviors, being among the most frequently reported reasons of referral in youth. CD is a highly heterogeneous disorder, with possible specifiers defined according to age at onset, Limited Prosocial Emotions (LPE) otherwise known as Callous-Unemotional (CU) traits, Emotional Dysregulation (ED), and patterns of comorbidity, each with its own specific developmental trajectories. AREAS COVERED The authors review the evidence from published literature on the clinical presentations, diagnostic procedures, psychotherapeutic and psychoeducational approaches, and pharmacological interventions from RCT and naturalistic studies in youth. Evidence from studies including youths with LPE/CU traits, ED and aggression are also reviewed, as response moderators. EXPERT OPINION Due to its clinical heterogeneity, relevant subtypes of CD should be carefully characterized to gain reliable information on prognosis and treatments. Thus, disentangling this broad category in subtypes is crucial as a first step in diagnosis. Psychosocial interventions are the first option, possibly improving LPE/CU traits and ED, especially if implemented early during development. Instead, limited information, based on low-quality studies, supports pharmacological options. Second-generation antipsychotics, mood stabilizers, and stimulants are first-line medications, according to different target symptoms, such as aggression and emotional reactivity. Developmental pathways including ADHD suggest a specific role of psychostimulants.
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Affiliation(s)
- Gabriele Masi
- Department of Child and Adolescent Psychiatry and Psychopharmacology, IRCCS Stella Maris Foundation, Pisa, Italy
| | - Sara Carucci
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Cagliari, Italy
- Child & Adolescent Neuropsychiatric Unit, "A. Cao" Paediatric Hospital-ARNAS "G. Brotzu" Hospital Trust, Department of Paediatrics, Cagliari, Italy
| | - Pietro Muratori
- Department of Child and Adolescent Psychiatry and Psychopharmacology, IRCCS Stella Maris Foundation, Pisa, Italy
| | - Carla Balia
- Department of Biomedical Science, Section of Neuroscience & Clinical Pharmacology, University of Cagliari, Cagliari, Italy
- Child & Adolescent Neuropsychiatric Unit, "A. Cao" Paediatric Hospital-ARNAS "G. Brotzu" Hospital Trust, Department of Paediatrics, Cagliari, Italy
| | - Gianluca Sesso
- Department of Child and Adolescent Psychiatry and Psychopharmacology, IRCCS Stella Maris Foundation, Pisa, Italy
- Social and Affective Neuroscience Group, Molecular Mind Lab, IMT School for Advanced Studies Lucca, Lucca, Italy
| | - Annarita Milone
- Department of Child and Adolescent Psychiatry and Psychopharmacology, IRCCS Stella Maris Foundation, Pisa, Italy
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Sesso G, Masi G. Pharmacological strategies for the management of the antisocial personality disorder. Expert Rev Clin Pharmacol 2023; 16:181-194. [PMID: 36787887 DOI: 10.1080/17512433.2023.2181159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 02/09/2023] [Indexed: 02/16/2023]
Abstract
INTRODUCTION Antisocial personality disorder (AsPD) is a pervasive pattern of violation of others' rights, related to the concept of psychopathy. AsPD is stable over time from adolescence, with evidence of conduct disorder (CD) before 15 years. DSM-5 included a specifier 'with limited prosocial emotions' (LPE), which characterizes adolescents with higher developmental vulnerability to develop AsPD. Despite being relatively frequent with considerable societal impact, AsPD is a difficult-to-treat condition with high comorbidity rates and poor evidence for effective pharmacological interventions. AREAS COVERED We conducted a narrative review and searched PubMed up to September 2022. We included RCTs and naturalistic studies evaluating pharmacological interventions on AsPD in adults, including those with comorbid substance use disorder or psychopathic traits. Evidence in youths with CD, callous-unemotional (CU) traits and aggression were also reviewed, exploring the role of CU traits as moderators of response. EXPERT OPINION Psychosocial interventions are the first option, with possible improvement of CU traits, beyond behavioral and affective symptoms, particularly if implemented early during development. Limited information, based on low-quality studies, supports the pharmacological options. Second-generation antipsychotics, lithium, anti-epileptic drugs, and stimulants are first-line medications, according to different target symptoms. Developmental pathways including ADHD suggest a specific role of psychostimulants.
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Affiliation(s)
- Gianluca Sesso
- Social and Affective Neuroscience Group, Molecular Mind Lab, IMT School for Advanced Studies Lucca, Lucca, Italy
- Department of Child and Adolescent Psychiatry and Psychopharmacology, IRCCS Stella Maris Foundation, Pisa, Italy
| | - Gabriele Masi
- Department of Child and Adolescent Psychiatry and Psychopharmacology, IRCCS Stella Maris Foundation, Pisa, Italy
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Sesso G, Brancati GE, Masi G. Comorbidities in Youth with Bipolar Disorder: Clinical Features and Pharmacological Management. Curr Neuropharmacol 2023; 21:911-934. [PMID: 35794777 PMCID: PMC10227908 DOI: 10.2174/1570159x20666220706104117] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/14/2022] [Accepted: 06/13/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Bipolar Disorder (BD) is a highly comorbid condition, and rates of cooccurring disorders are even higher in youth. Comorbid disorders strongly affect clinical presentation, natural course, prognosis, and treatment. METHODS This review focuses on the clinical and treatment implications of the comorbidity between BD and Attention-Deficit/Hyperactivity Disorder, disruptive behavior disorders (Oppositional Defiant Disorder and/or Conduct Disorder), alcohol and substance use disorders, Autism Spectrum Disorder, anxiety disorders, Obsessive-Compulsive Disorder, and eating disorders. RESULTS These associations define specific conditions which are not simply a sum of different clinical pictures, but occur as distinct and complex combinations with specific developmental pathways over time and selective therapeutic requirements. Pharmacological treatments can improve these clinical pictures by addressing the comorbid conditions, though the same treatments may also worsen BD by inducing manic or depressive switches. CONCLUSION The timely identification of BD comorbidities may have relevant clinical implications in terms of symptomatology, course, treatment and outcome. Specific studies addressing the pharmacological management of BD and comorbidities are still scarce, and information is particularly lacking in children and adolescents; for this reason, the present review also included studies conducted on adult samples. Developmentally-sensitive controlled clinical trials are thus warranted to improve the prognosis of these highly complex patients, requiring timely and finely personalized therapies.
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Affiliation(s)
- Gianluca Sesso
- IRCCS Stella Maris, Scientific Institute of Child Neurology and Psychiat., Calambrone (Pisa), Italy
| | | | - Gabriele Masi
- IRCCS Stella Maris, Scientific Institute of Child Neurology and Psychiat., Calambrone (Pisa), Italy
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Wozniak J, DiSalvo M, Farrell A, Yule A, Joshi G, Cook E, Faraone SV, Biederman J. Can pediatric bipolar disorder be successfully treated when comorbid with conduct disorder? A secondary analysis of clinical trials of risperidone, olanzapine, quetiapine, ziprasidone, and aripiprazole. J Psychopharmacol 2022; 36:637-644. [PMID: 35510655 DOI: 10.1177/02698811221087673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Pediatric bipolar disorder (BP) is frequently comorbid with conduct disorder (CD) and its presence adds to the morbidity of BP. While there are no known pharmacological treatments for CD, pediatric BP is responsive to treatment with medications initially indicated for the treatment of psychosis, several of which have Food and Drug Administration (FDA) approval for the treatment of pediatric mania. AIMS The main aim of this secondary analysis was to examine whether pediatric BP comorbid with CD responds similarly to treatment with such selected medications. Considering the well-documented morbidity of CD, this finding could have important clinical and public health significance. METHODS We conducted a secondary analysis of six prospective 8-week open-label trials of selected medications (risperidone, olanzapine, quetiapine, ziprasidone, and aripiprazole) using identical methodology in youth with BP with and without comorbid CD. Results: Of 165 youths with BP, 54% (N = 89) met criteria for comorbid CD. The antimanic effects observed did not significantly differ between BP youths with and without comorbid CD, as measured either by a reduction in Young Mania Rating Scale (YMRS) ⩾ 30% or Clinical Global Impression (CGI)-Improvement ⩽ 2 (p = 0.23), or by the more stringent definition of a reduction in YMRS ⩾ 50% (p = 0.61). CONCLUSION Pediatric BP can be effectively treated with the abovementioned medications in the context of comorbid CD. Based on previous research showing that remission of BP is associated with remission of CD, if confirmed, these findings raise the possibility that antimanic treatment of youth with BP comorbid with CD could have secondary benefits in mitigating the morbidity associated with CD. This is a pilot scale finding, the results of which are promising and should be confirmed by larger and long-term follow-up studies.
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Affiliation(s)
- Janet Wozniak
- Clinical and Research Program in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA.,Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Maura DiSalvo
- Clinical and Research Program in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA
| | - Abigail Farrell
- Clinical and Research Program in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA
| | - Amy Yule
- Clinical and Research Program in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA.,Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Gagan Joshi
- Clinical and Research Program in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA.,Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Emmaline Cook
- Clinical and Research Program in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA
| | - Stephen V Faraone
- Department of Psychiatry and Behavioral Sciences, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Joseph Biederman
- Clinical and Research Program in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA.,Department of Psychiatry, Harvard Medical School, Boston, MA, USA
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Biederman J, Green A, DiSalvo M, Faraone SV. Can polygenic risk scores help identify pediatric bipolar spectrum and related disorders?: A systematic review. Psychiatry Res 2021; 299:113843. [PMID: 33721787 PMCID: PMC10733908 DOI: 10.1016/j.psychres.2021.113843] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/25/2021] [Indexed: 11/21/2022]
Abstract
The genetic basis of mood disorders can, theoretically, provide diagnostic information in scenarios of clinical uncertainty. Therefore, we examined the available body of knowledge on the association between polygenic risk scores for bipolar disorder (BP-PRSs) and pediatric bipolar spectrum and related disorders. We performed a literature search through PubMed in March of 2020. The following variables were extracted from relevant studies: population age, study sample size, source of polygenic risk scores, source of data, the primary goal of the study, the assessments used during the course of the study, and the main findings/outcomes of each study. BP-PRSs were associated with deficits in executive functioning and the diagnosis of attention deficit/hyperactivity disorder (ADHD). Three studies included in our analysis directly compared major depressive disorder (MDD)-PRSs to BP-PRSs in youth. Results showed that MDD-PRSs, and not BP-PRSs, were associated with ADHD symptoms, internalizing problems, and social problems. ADHD-PRSs were associated with conduct problems, depressive symptomatology, and externalizing disorders symptoms. Findings revealed that ADHD-PRSs were more clearly associated with emotional reactivity, emotional dysregulation, and irritability-frequent correlates of pediatric BP disorder. These findings suggest that ADHD-PRSs may have an important contribution to the development of mood related problems in youth.
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Affiliation(s)
- Joseph Biederman
- Clinical and Research Programs in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA.
| | - Allison Green
- Clinical and Research Programs in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA
| | - Maura DiSalvo
- Clinical and Research Programs in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, MA, USA
| | - Stephen V Faraone
- Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA
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Schiweck C, Arteaga-Henriquez G, Aichholzer M, Edwin Thanarajah S, Vargas-Cáceres S, Matura S, Grimm O, Haavik J, Kittel-Schneider S, Ramos-Quiroga JA, Faraone SV, Reif A. Comorbidity of ADHD and adult bipolar disorder: A systematic review and meta-analysis. Neurosci Biobehav Rev 2021; 124:100-123. [PMID: 33515607 DOI: 10.1016/j.neubiorev.2021.01.017] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 01/12/2021] [Accepted: 01/19/2021] [Indexed: 12/17/2022]
Abstract
Attention-deficit / hyperactivity disorder (ADHD) and Bipolar Disorder (BD) are common mental disorders with a high degree of comorbidity. However, no systematic review with meta-analysis has aimed to quantify the degree of comorbidity between both disorders. To this end we performed a systematic search of the literature in October 2020. In a meta-analysis of 71 studies with 646,766 participants from 18 countries, it was found that about one in thirteen adults with ADHD was also diagnosed with BD (7.95 %; 95 % CI: 5.31-11.06), and nearly one in six adults with BD had ADHD (17.11 %; 95 % CI: 13.05-21.59 %). Substantial heterogeneity of comorbidity rates was present, highlighting the importance of contextual factors: Heterogeneity could partially be explained by diagnostic system, sample size and geographical location. Age of BD onset occurred earlier in patients with comorbid ADHD (3.96 years; 95 % CI: 2.65-5.26, p < 0.001). Cultural and methodological differences deserve attention for evaluating diagnostic criteria and clinicians should be aware of the high comorbidity rates to prevent misdiagnosis and provide optimal care for both disorders.
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Affiliation(s)
- Carmen Schiweck
- Department for Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt- Goethe University, Germany.
| | - Gara Arteaga-Henriquez
- Department for Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain; Group of Psychiatry, Mental Health and Addictions, Vall d'Hebron Research Institute (VHIR), Barcelona, Catalonia, Spain; Biomedical Network Research Centre on Mental Health (CIBERSAM), Barcelona, Catalonia, Spain
| | - Mareike Aichholzer
- Department for Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt- Goethe University, Germany
| | - Sharmili Edwin Thanarajah
- Department for Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt- Goethe University, Germany; Max-Planck-Institute for Metabolism Research, Cologne, Germany
| | - Sebastian Vargas-Cáceres
- Department for Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain; Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Barcelona, Catalonia, Spain
| | - Silke Matura
- Department for Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt- Goethe University, Germany
| | - Oliver Grimm
- Department for Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt- Goethe University, Germany
| | - Jan Haavik
- Department of Biomedicine, University of Bergen, Bergen, Norway; Bergen Center of Brain Plasticity, Division of Psychiatry, Haukeland University Hospital, Bergen, Norway
| | - Sarah Kittel-Schneider
- Department of Psychiatry, Psychotherapy and Psychosomatic Medicine, University Hospital, University of Würzburg, Würzburg, Germany
| | - Josep Antoni Ramos-Quiroga
- Department for Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Catalonia, Spain; Group of Psychiatry, Mental Health and Addictions, Vall d'Hebron Research Institute (VHIR), Barcelona, Catalonia, Spain; Biomedical Network Research Centre on Mental Health (CIBERSAM), Barcelona, Catalonia, Spain
| | - Stephen V Faraone
- Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Andreas Reif
- Department for Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt- Goethe University, Germany
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Loft L, Waldfogel J. Socioeconomic Status Gradients in Young Children's Well-Being at School. Child Dev 2020; 92:e91-e105. [PMID: 32909285 DOI: 10.1111/cdev.13453] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study examines the socioeconomic status gradients in children's well-being at school using data on the total population of Danish public school children age 6-11 (N = 147,994). Children completed the national well-being at school survey, an environment-specific self-report of satisfaction with school, social well-being at school, and psychological well-being at school. Data were linked with administrative register data on family characteristics. Regression analysis was used to estimate gradients by parental education and income for each of the three dimensions of well-being at school. Findings indicated that even in the relatively equal Danish context, children from more educated and higher-income families experienced greater satisfaction with school and higher social and psychological well-being at school than their less advantaged peers.
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Characteristics of Child Psychiatric Outpatients at Highest Risk for Suicidal Thoughts and Behaviors. Child Psychiatry Hum Dev 2019; 50:505-519. [PMID: 30656508 DOI: 10.1007/s10578-018-0858-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
On average, compared to non-referred youth, child psychiatric outpatients show elevated rates of suicidal thoughts and behaviors (STBs), which are predictors of completed suicide. Determining the psychopathology features that associate with highest risk for STBs among youth outpatients may yield opportunities for targeted prevention/intervention. Yet, outpatient studies are limited and have not systematically examined comorbidity and dimensional psychopathology. In 758 youth, aged 6-18, consecutively referred for neuropsychiatric evaluation, we examined the extent to which diagnostic groups, comorbid subgroups and dimensional symptoms associated with STBs. After controlling for comorbidity, mood, anxiety and conduct disorders associated with elevated STB risk. Regarding dimensions, symptoms of depression, aggression and psychosis all contributed to higher STB risk. Although ADHD (as a diagnosis or dimension) did not associate with elevated STB risk independently, ADHD that was comorbid with other conditions did. Suicide prevention/intervention efforts should be investigated in youth outpatients with the highest risk for STBs.
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Wozniak J, Wilens T, DiSalvo M, Farrell A, Wolenski R, Faraone SV, Biederman J. Comorbidity of bipolar I disorder and conduct disorder: a familial risk analysis. Acta Psychiatr Scand 2019; 139:361-368. [PMID: 30758064 PMCID: PMC6476307 DOI: 10.1111/acps.13013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/11/2019] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate the association between pediatric bipolar I (BP-I) disorder and conduct disorder (CD) using familial risk analysis. METHOD We compared diagnoses in relatives of youth in four proband groups defined by the presence or absence of BP-I and CD: (1) probands with neither CD nor BP-I (probands: N = 550; relatives: N = 1656), (2) probands with CD and without BP-I (probands: N = 40; relatives: N = 127), (3) probands with BP-I and without CD (probands: N = 197; relatives: N = 579), and (4) probands with both CD and BP-I (probands: N = 176; relatives: N = 488). All subjects were evaluated with structured diagnostic interviews, and diagnoses of relatives were made blind to the diagnoses of probands. RESULTS Relatives of probands with BP-I disorder had high rates of BP-I, and relatives of probands with CD had high rates of CD irrespective of the comorbidity with the other disorder. Relatives of probands with the combined condition of CD and BP-I had high rates of the combined condition. CONCLUSION The finding of cosegregation between BP-I disorder and CD is consistent with the hypothesis that the combined condition represents a distinct subtype of either disorder.
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Affiliation(s)
- Janet Wozniak
- Pediatric Psychopharmacology Program, Division of Child
Psychiatry, Massachusetts General Hospital, Boston, MA 02114, USA,Department of Psychiatry, Massachusetts General Hospital
and Harvard Medical School, Boston, MA 02114, USA
| | - Timothy Wilens
- Pediatric Psychopharmacology Program, Division of Child
Psychiatry, Massachusetts General Hospital, Boston, MA 02114, USA,Department of Psychiatry, Massachusetts General Hospital
and Harvard Medical School, Boston, MA 02114, USA
| | - Maura DiSalvo
- Pediatric Psychopharmacology Program, Division of Child
Psychiatry, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Abigail Farrell
- Pediatric Psychopharmacology Program, Division of Child
Psychiatry, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Rebecca Wolenski
- Pediatric Psychopharmacology Program, Division of Child
Psychiatry, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Stephen V. Faraone
- Department of Psychiatry and Behavioral Sciences, SUNY
Upstate Medical University, Syracuse, New York, USA
| | - Joseph Biederman
- Pediatric Psychopharmacology Program, Division of Child
Psychiatry, Massachusetts General Hospital, Boston, MA 02114, USA,Department of Psychiatry, Massachusetts General Hospital
and Harvard Medical School, Boston, MA 02114, USA
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10
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Jung J, Goldstein RB, Grant BF. Association of respondent psychiatric comorbidity with family history of comorbidity: Results from the National Epidemiologic Survey on Alcohol and Related Conditions-III. Compr Psychiatry 2016; 71:49-56. [PMID: 27622994 PMCID: PMC5075263 DOI: 10.1016/j.comppsych.2016.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 07/25/2016] [Accepted: 08/04/2016] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Substance use disorders and major psychiatric disorders are common, highly comorbid with each other, and familial. However, the extent to which comorbidity is itself familial remains unclear. The purpose of this study is to investigate associations between comorbidity among respondents with family history of comorbidity. METHODS We analyzed data from the National Epidemiologic Survey on Alcohol and Related Conditions-III to study the associations of family history (FH) of comorbidity among alcoholism, drug problems, depression, antisocial behavior, and anxiety disorders in parents and maternal and paternal grandparents with corresponding DSM-5 diagnostic comorbidity among respondents. We utilized multivariable multinomial logistic regression models controlling for age, sex, race, education, family income, marital status, and adverse childhood experiences (ACEs). RESULTS All comorbid associations of any two disorders with FH were statistically significant; almost all adjusted odds ratios (ORs) for respondent comorbidity in the presence of FH of the parallel comorbidity exceeded 10. ORs involving antisocial behavior in relatives and antisocial personality disorder in respondents were consistently larger than those for any other pairs of disorders. After further adjustment for ACEs, most patterns of association were similar but the ORs were reduced twofold to threefold. ACEs may be mediators in relationships between familial and respondent comorbidities. CONCLUSION Further investigations of relationships among familial comorbidity, ACEs, and respondents' diagnoses may improve understanding of comorbidity.
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Affiliation(s)
- Jeesun Jung
- Laboratory of Epidemiology and Biometry, Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 5635 Fishers Ln., Room 3064, Rockville, MD, 20852, USA.
| | - Risë B Goldstein
- Laboratory of Epidemiology and Biometry, Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 5635 Fishers Ln., Room 3064, Rockville, MD, 20852, USA.
| | - Bridget F Grant
- Laboratory of Epidemiology and Biometry, Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 5635 Fishers Ln., Room 3064, Rockville, MD, 20852, USA.
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Faraone SV, Asherson P, Banaschewski T, Biederman J, Buitelaar JK, Ramos-Quiroga JA, Rohde LA, Sonuga-Barke EJS, Tannock R, Franke B. Attention-deficit/hyperactivity disorder. Nat Rev Dis Primers 2015; 1:15020. [PMID: 27189265 DOI: 10.1038/nrdp.2015.20] [Citation(s) in RCA: 811] [Impact Index Per Article: 90.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Attention-deficit/hyperactivity disorder (ADHD) is a persistent neurodevelopmental disorder that affects 5% of children and adolescents and 2.5% of adults worldwide. Throughout an individual's lifetime, ADHD can increase the risk of other psychiatric disorders, educational and occupational failure, accidents, criminality, social disability and addictions. No single risk factor is necessary or sufficient to cause ADHD. In most cases ADHD arises from several genetic and environmental risk factors that each have a small individual effect and act together to increase susceptibility. The multifactorial causation of ADHD is consistent with the heterogeneity of the disorder, which is shown by its extensive psychiatric co-morbidity, its multiple domains of neurocognitive impairment and the wide range of structural and functional brain anomalies associated with it. The diagnosis of ADHD is reliable and valid when evaluated with standard criteria for psychiatric disorders. Rating scales and clinical interviews facilitate diagnosis and aid screening. The expression of symptoms varies as a function of patient developmental stage and social and academic contexts. Although there are no curative treatments for ADHD, evidenced-based treatments can markedly reduce its symptoms and associated impairments. For example, medications are efficacious and normally well tolerated, and various non-pharmacological approaches are also valuable. Ongoing clinical and neurobiological research holds the promise of advancing diagnostic and therapeutic approaches to ADHD. For an illustrated summary of this Primer, visit: http://go.nature.com/J6jiwl.
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Affiliation(s)
- Stephen V Faraone
- Departments of Psychiatry and of Neuroscience and Physiology, State University of New York (SUNY) Upstate Medical University, Syracuse, New York 13210, USA
- K.G. Jebsen Centre for Psychiatric Disorders, Department of Biomedicine, University of Bergen, 5020 Bergen, Norway
| | - Philip Asherson
- Social Genetic and Developmental Psychiatry, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - Tobias Banaschewski
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Joseph Biederman
- Department of Psychiatry, Harvard Medical School, Massachusetts General Hospital, Pediatric Psychopharmacology Unit, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Jan K Buitelaar
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Department of Cognitive Neuroscience and Karakter Child and Adolescent Psychiatry University Centre, Nijmegen, The Netherlands
| | - Josep Antoni Ramos-Quiroga
- ADHD Program, Department of Psychiatry, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Biomedical Network Research Centre on Mental Health (CIBERSAM), Barcelona, Spain
- Department of Psychiatry and Legal Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Luis Augusto Rohde
- ADHD Outpatient Program, Hospital de Clinicas de Porto Alegre, Department of Psychiatry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- National Institute of Developmental Psychiatry for Children and Adolescents, Sao Paulo, Brazil
| | - Edmund J S Sonuga-Barke
- Department of Psychology, University of Southampton, Southampton, UK
- Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium
| | - Rosemary Tannock
- Neuroscience and Mental Health Research Program, Research Institute of The Hospital for Sick Children, Toronto, Canada
- Department of Applied Psychology and Human Development, Ontario Institute for Studies in Education, University of Toronto, Toronto, Ontario, Canada
| | - Barbara Franke
- Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, Departments of Human Genetics and Psychiatry, Nijmegen, The Netherlands
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12
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Kotte A, Faraone SV, Biederman J. Association of genetic risk severity with ADHD clinical characteristics. Am J Med Genet B Neuropsychiatr Genet 2013; 162B:718-33. [PMID: 24132904 DOI: 10.1002/ajmg.b.32171] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 04/25/2013] [Indexed: 12/23/2022]
Abstract
This study sought to examine the association between the cumulative risk severity conferred by the total number of attention-deficit/hyperactivity disorder (ADHD) risk alleles of the DAT1 3'UTR variable number tandem repeat (VNTR), DRD4 Exon 3 VNTR, and 5-HTTLPR with ADHD characteristics, clinical correlates, and functional outcomes in a pediatric sample. Participants were derived from case-control family studies of boys and girls diagnosed with ADHD, a genetic linkage study of families with children with ADHD, and a family genetic study of pediatric bipolar disorder. Caucasian children 18 and younger with and without ADHD and with available genetic data were included in this analysis (N = 591). The association of genetic risk severity with sociodemographic, clinical characteristics, neuropsychological, emotional, and behavioral correlates was examined in the entire sample, in the sample with ADHD, and in the sample without ADHD, respectively. Greater genetic risk severity was significantly associated with the presence of disruptive behavior disorders in the entire sample and oppositional defiant disorder in participants with ADHD. Greater genetic risk severity was also associated with the absence of anxiety disorders, specifically with the absence of agoraphobia in the context of ADHD. Additionally, one ADHD symptom was significantly associated with greater genetic risk severity. Genetic risk severity is significantly associated with ADHD clinical characteristics and co-morbid disorders, and the nature of these associations may vary on the type (externalizing vs. internalizing) of the disorder.
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Affiliation(s)
- Amelia Kotte
- Clinical and Research Programs in Pediatric Psychopharmacology and Adult ADHD, Massachusetts General Hospital, Boston, Massachusetts; Department of Psychiatry, Harvard Medical School, Cambridge, Massachusetts
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A survey of genomic studies supports association of circadian clock genes with bipolar disorder spectrum illnesses and lithium response. PLoS One 2012; 7:e32091. [PMID: 22384149 PMCID: PMC3285204 DOI: 10.1371/journal.pone.0032091] [Citation(s) in RCA: 121] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 01/23/2012] [Indexed: 11/19/2022] Open
Abstract
Circadian rhythm abnormalities in bipolar disorder (BD) have led to a search for genetic abnormalities in circadian “clock genes” associated with BD. However, no significant clock gene findings have emerged from genome-wide association studies (GWAS). At least three factors could account for this discrepancy: complex traits are polygenic, the organization of the clock is more complex than previously recognized, and/or genetic risk for BD may be shared across multiple illnesses. To investigate these issues, we considered the clock gene network at three levels: essential “core” clock genes, upstream circadian clock modulators, and downstream clock controlled genes. Using relaxed thresholds for GWAS statistical significance, we determined the rates of clock vs. control genetic associations with BD, and four additional illnesses that share clinical features and/or genetic risk with BD (major depression, schizophrenia, attention deficit/hyperactivity). Then we compared the results to a set of lithium-responsive genes. Associations with BD-spectrum illnesses and lithium-responsiveness were both enriched among core clock genes but not among upstream clock modulators. Associations with BD-spectrum illnesses and lithium-responsiveness were also enriched among pervasively rhythmic clock-controlled genes but not among genes that were less pervasively rhythmic or non-rhythmic. Our analysis reveals previously unrecognized associations between clock genes and BD-spectrum illnesses, partly reconciling previously discordant results from past GWAS and candidate gene studies.
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Skjelstad DV, Malt UF, Holte A. Symptoms and behaviors prior to the first major affective episode of bipolar II disorder. An exploratory study. J Affect Disord 2011; 132:333-43. [PMID: 21435726 DOI: 10.1016/j.jad.2011.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 03/01/2011] [Accepted: 03/02/2011] [Indexed: 01/15/2023]
Abstract
BACKGROUND Few studies have investigated the initial prodrome of bipolar disorders, and none has explicitly addressed bipolar II disorder (BD-II). We explored symptoms and behaviors preceding the first major affective episode (FMAE) of BD-II to generate hypotheses concerning possible clinical targets for early intervention. METHODS In-depth interviews of 15 BD-II patients and 22 family informants were carried out. Clinical diagnoses were reassessed. The textual data of transcribed interviews were analyzed utilizing qualitative methodology supplemented by quantitative analyses. RESULTS All patients experienced clinically significant symptoms and behaviors at an average of more than a decade before the FMAE. Anxiety and depression-type symptoms were the most common. Two distinct subgroups were identified based on prominent and enduring personal characteristics prior to the FMAE. The individuals in one of the subgroups were described as very well-functioning, whereas the individuals in the other subgroup were characterized by neurocognitive deficits, relatively low academic and social functioning, and pronounced irritability and aggressiveness. Furthermore, it is possible that these individuals experience earlier prodromal symptom onset, earlier FMAEs, and more symptoms than individuals without these characteristics. LIMITATIONS This is a retrospective and hypothesis-generating qualitative study. The hypotheses generated need to be tested in future studies. CONCLUSIONS Prodromal clinical phenomenology is too nonspecific to predict the occurrence of the FMAE of BD-II. However, identifiable subgroups may exist. We hypothesize that neurocognitive deficits together with pronounced irritability and aggressiveness may constitute a vulnerability marker for a subgroup of individuals who subsequently develop BD-II. This subgroup may be of potential interest for early identification.
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Wilkins JF, Úbeda F. Diseases associated with genomic imprinting. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 101:401-45. [PMID: 21507360 DOI: 10.1016/b978-0-12-387685-0.00013-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Genomic imprinting is the phenomenon where the expression of a locus differs between the maternally and paternally inherited alleles. Typically, this manifests as transcriptional silencing of one of the alleles, although many genes are imprinted in a tissue- or isoform-specific manner. Diseases associated with imprinted genes include various cancers, disorders of growth and metabolism, and disorders in neurodevelopment, cognition, and behavior, including certain major psychiatric disorders. In many cases, the disease phenotypes associated with dysfunction at particular imprinted loci can be understood in terms of the evolutionary processes responsible for the origin of imprinting. Imprinted gene expression represents the outcome of an intragenomic evolutionary conflict, where natural selection favors different expression strategies for maternally and paternally inherited alleles. This conflict is reasonably well understood in the context of the early growth effects of imprinted genes, where paternally inherited alleles are selected to place a greater demand on maternal resources than are maternally inherited alleles. Less well understood are the origins of imprinted gene expression in the brain, and their effects on cognition and behavior. This chapter reviews the genetic diseases that are associated with imprinted genes, framed in terms of the evolutionary pressures acting on gene expression at those loci. We begin by reviewing the phenomenon and evolutionary origins of genomic imprinting. We then discuss diseases that are associated with genetic or epigenetic defects at particular imprinted loci, many of which are associated with abnormalities in growth and/or feeding behaviors that can be understood in terms of the asymmetric pressures of natural selection on maternally and paternally inherited alleles. We next described the evidence for imprinted gene effects on adult cognition and behavior, and the possible role of imprinted genes in the etiology of certain major psychiatric disorders. Finally, we conclude with a discussion of how imprinting, and the evolutionary-genetic conflicts that underlie it, may enhance both the frequency and morbidity of certain types of diseases.
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Gau SSF, Shang CY. Executive functions as endophenotypes in ADHD: evidence from the Cambridge Neuropsychological Test Battery (CANTAB). J Child Psychol Psychiatry 2010; 51:838-49. [PMID: 20085608 DOI: 10.1111/j.1469-7610.2010.02215.x] [Citation(s) in RCA: 148] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Little is known about executive functions among unaffected siblings of children with attention deficit/hyperactivity disorder (ADHD), and there is lack of such information from non-Western countries. We examined verbal and nonverbal executive functions in adolescents with ADHD, unaffected siblings and controls to test whether executive functions could be potential endophenotypes for ADHD. METHODS We assessed 279 adolescents (age range: 11-17 years) with a childhood diagnosis of DSM-IV ADHD, 136 biological siblings (108 unaffected, 79.4%), and 173 unaffected controls by using psychiatric interviews, the Wechsler Intelligence Scale for Children - 3rd edition (WISC-III), including digit spans, and the tasks involving executive functions of the Cambridge Neuropsychological Test Automated Battery (CANTAB): Intra-dimensional/Extra-dimensional Shifts (IED), Spatial Span (SSP), Spatial Working Memory (SWM), and Stockings of Cambridge (SOC). RESULTS Compared with the controls, adolescents with ADHD and unaffected siblings had a significantly shorter backward digit span, more extra-dimensional shift errors in the IED, shorter spatial span length in the SSP, more total errors and poorer strategy use in the SWM, and fewer problems solved in the minimum number of moves and shorter initial thinking time in the SOC. The magnitudes of the differences in the SWM and SOC increased with increased task difficulties. In general, neither persistent ADHD nor comorbidity was associated with increased deficits in executive functions among adolescents with ADHD. CONCLUSIONS The lack of much difference in executive dysfunctions between unaffected siblings and ADHD adolescents suggests that executive dysfunctions may be useful cognitive endophenotypes for ADHD genetic studies.
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Affiliation(s)
- Susan Shur-Fen Gau
- Department of Psychiatry, National Taiwan University Hospital & College of Medicine, Taipei, Taiwan.
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Bernardi S, Cortese S, Solanto M, Hollander E, Pallanti S. Bipolar disorder and comorbid attention deficit hyperactivity disorder. A distinct clinical phenotype? Clinical characteristics and temperamental traits. World J Biol Psychiatry 2010; 11:656-66. [PMID: 20353313 DOI: 10.3109/15622971003653238] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES It has been suggested that bipolar disorder (BD) with comorbid ADHD represents a distinct clinical phenotype of BD. There are no data regarding potential heterogeneity between BD subjects with a diagnosis of ADHD in childhood whose ADHD remitted in adulthood (cADHD-BD) vs. BD patients with persistent ADHD diagnosis in adulthood (aADHD-BD). This heterogeneity may constitute a confounder in investigations of the nature of the co-occurrence between BD and ADHD. The aim of this paper is to compare BD patients without ADHD, to those with aADHD-BD, and those with cADHD-BD on clinical and temperamental characteristics, hypothesizing that maladaptive temperament will be increased in BD subjects with a stable diagnosis of ADHD in adulthood compared to those whose ADHD remitted. We further hypothesize that maladaptive temperament will be associated with the severity of both illnesses. METHODS A total of 100 outpatients (aged 18-30 years) with BD in remission were included. The assessment of ADHD was made according to a procedure aimed to reduce potential recall biases. Subjects had to have a parent available and had never been treated with stimulants. Temperamental traits were assessed with the California Child Q-sort (CCQ) and the Early Adolescent Temperament Questionnaire (EATQ). RESULTS Rate of co-occurrence of ADHD-BD was 18% lifetime and 10% current diagnosis. Patients with ADHD-BD (aADHD-BD+cADHD-BD) reported a significantly earlier onset of mood disorder, higher number of previous mood episodes, and significantly higher impulsivity than BD patients without ADHD. aADHD-BD showed a significantly earlier BD onset, higher number of previous mood episodes, higher impulsivity, decreased Reactive Control and higher Negative Emotionality temperamental scores than cADHD patients. CONCLUSION Findings suggest that patients with aADHD-BD present a clinical phenotype distinct from that of patients with BD without ADHD or with a childhood ADHD diagnosis that remitted with the age. This appealing hypothesis of a BD-distinct phenotype that can be detected early due to its associated maladaptive temperamental traits requires further investigation in larger samples, supported by neuropsychological, genetic and imaging data.
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Affiliation(s)
- Silvia Bernardi
- Department of Psychiatry, Mount Sinai School of Medicine, New York 10029, USA.
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Genomic imprinting and human psychology: cognition, behavior and pathology. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2008; 626:71-88. [PMID: 18372792 DOI: 10.1007/978-0-387-77576-0_6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Imprinted genes expressed in the brain are numerous and it has become clear that they play an important role in nervous system development and function. The significant influence of genomic imprinting during development sets the stage for structural and physiological variations affecting psychological function and behaviour, as well as other physiological systems mediating health and well-being. However, our understanding of the role of imprinted genes in behaviour lags far behind our understanding of their roles in perinatal growth and development. Knowledge of genomic imprinting remains limited among behavioral scientists and clinicians and research regarding the influence of imprinted genes on normal cognitive processes and the most common forms of neuropathology has been limited to date. In this chapter, we will explore how knowledge of genomic imprinting can be used to inform our study of normal human cognitive and behavioral processes as well as their disruption. Behavioural analyses of rare imprinted disorders, such as Prader-Willi and Angelman syndromes, provide insight regarding the phenotypic impact of imprinted genes in the brain, and can be used to guide the study of normal behaviour as well as more common but etiologically complex disorders such as ADHD and autism. Furthermore, hypotheses regarding the evolutionary development of imprinted genes can be used to derive predictions about their role in normal behavioural variation, such as that observed in food-related and social interactions.
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Singh MK, DelBello MP, Kowatch RA, Strakowski SM. Co-occurrence of bipolar and attention-deficit hyperactivity disorders in children. Bipolar Disord 2006; 8:710-20. [PMID: 17156157 DOI: 10.1111/j.1399-5618.2006.00391.x] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Pediatric bipolar disorder (BPD) and attention-deficit hyperactivity disorder (ADHD) co-occur more frequently than expected by chance. In this review, we examine 4 potential explanations for the high rate of this common co-occurrence: (i) BPD symptom expression leads to overdiagnosis of ADHD in BPD youth; (ii) ADHD is a prodromal or early manifestation of pediatric-onset BPD; (iii) ADHD and associated factors (e.g., psychostimulants) lead to the onset of pediatric BPD; and (iv) ADHD and BPD share an underlying biological etiology (i.e., a common familial or genetic risk or underlying neurophysiology). METHODS Peer-reviewed publications of studies of children and adolescents with comorbid BPD and ADHD were reviewed. RESULTS There is a bidirectional overlap between BPD and ADHD in youth, with high rates of ADHD present in children with BPD (up to 85%), and elevated rates of BPD in children with ADHD (up to 22%). Phenomenologic, genetic, family, neuroimaging, and treatment studies revealed that BPD and ADHD have both common and distinct characteristics. While there are data to support all 4 explanations postulated in this paper, the literature most strongly suggests that ADHD symptoms represent a prodromal or early manifestation of pediatric-onset BPD in certain at-risk individuals. Bipolar disorder with comorbid ADHD may thus represent a developmentally specific phenotype of early-onset BPD. CONCLUSIONS The etiology of comorbid BPD and ADHD is likely multifactorial. Additional longitudinal and biological studies are warranted to clarify the relationships between BPD and ADHD since they may have important diagnostic and treatment implications.
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Affiliation(s)
- Manpreet K Singh
- Division of Bipolar Disorders Research, Department of Psychiatry, University of Cincinnati College of Medicine, 231 Bethesda Avenue, Cincinnati, OH 45267, USA
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Volk HE, Henderson C, Neuman RJ, Todd RD. Validation of population-based ADHD subtypes and identification of three clinically impaired subtypes. Am J Med Genet B Neuropsychiatr Genet 2006; 141B:312-8. [PMID: 16526027 DOI: 10.1002/ajmg.b.30299] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Statistically based classification methods have successfully refined ADHD into homogenous and heritable subtypes. External validity and impairment of these subtypes was examined using the Child Behavior Checklist (CBCL). We compared mean CBCL syndrome and competency t-scores across ADHD subtypes defined by latent class analysis in a sample of 1,346 individual twins from Missouri. The potential for comorbidity with conduct disorder (CD), oppositional defiant disorder (ODD), or major depression (MD) to increase impairment in specific ADHD subtypes was also examined. CBCL profiles confirm differences in severity, with more severe classes having increased syndrome scale and decreased competency scale CBCL scores. Clinically significant impairment was found for severe inattentive and combined subtypes and the mild combined subtype. Overall, the presence of comorbid CD, ODD, or MD did not result in increased ADHD subtype impairment. CBCL scores distinguish impairment in ADHD subtypes created through LCA. Comorbidity with CD, ODD, or MD does not significantly increase impairment among ADHD subtypes. The mild combined ADHD subtype represents a clinically significant but under-studied form of ADHD.
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Affiliation(s)
- Heather E Volk
- Doctoral Program in Public Health Studies, Saint Louis University School of Public Health, Saint Louis, Missouri, USA
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Abstract
In studies made in the last decade, patients consulting doctors because of depression and anxiety have very often turned out to suffer from bipolar type II and similar conditions with alternating depression and hypomania/mania (the bipolar spectrum disorders - BP). Specifically, about every second patient seeking consultation because of depression has been shown to suffer from BP, mainly bipolar type II. BP is often concealed by other psychiatric conditions, e.g. recurrent depression, psychosis, anxiety, addiction, personality disorder, attention-deficit hyperactivity disorder and eating disorder. BP shows strong heredity. Relatives of patients with BP also have a high frequency of the psychiatric conditions just mentioned. Conversion ("switching") from recurrent unipolar depressions (recurrent UP) to BP is common in very long longitudinal studies (over decades). Mood-stabilizing medicines are recommended to a great extent in the treatment of BP, since anti-depressive medicines are often not effective and involve a substantial risk of inducing mood swings. Particularly in the long-term pharmacological treatment of depression in BP anti-depressive medicines may worsen the condition, e.g. inducing a symptom triad of dysphoria, irritability and insomnia: ACID (antidepressant-associated chronic irritable dysphoria).
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Affiliation(s)
- Peter Skeppar
- Department of Adult Psychiatry, Sunderby Hospital, SE-971 80, Lule, Sweden.
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Pediaditakis N. Considering the major mental disorders as clinical expressions of periodic pathological oscillations of the overall operating mode of brain function. Med Hypotheses 2006; 67:395-400. [PMID: 16632227 DOI: 10.1016/j.mehy.2005.09.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2005] [Revised: 09/04/2005] [Accepted: 09/05/2005] [Indexed: 10/24/2022]
Abstract
The consideration of the collective significance of the shared characteristics and overlaps in the clinical expression and pharmacological responses of the major mental disorders (namely, schizophrenia, bipolar disorders, obsessive compulsive disorder, anxieties/phobias, borderline syndrome and possibly others) supports the following: (1) These disorders have a common, initial neurodevelopmental origin. (2) They occur probabilistically on some of "at-risk" individuals whose pre-existing, extreme, temperamental/structural variance confers vulnerability for such occurrence. (3) Lastly, each of these syndromes can be considered as a clinical expression of oscillations (i.e., a switch to a pathologically ordered phase) of the overall, common operating mode of brain function. This mode based on a particular-for-our-brain, emergent quality of complexity, normally ensures the synchrony, coordination, subtlety and robust flexibility in the expression of the components of each of the various higher faculties of the brain, namely, the faculty of: (1) mood modulation; (2) coordination of feelings, thoughts and the responses to the external world; and (3) keeping constrain and limited but appropriate input of primitive drives. The conclusions in this paper have important ramifications in rethinking the current nosological procrustean flawed classification and the neurodevelopmental origin of the major mental disorders as well as the biases shown in selecting subjects for research. It also opens opportunities in the future development of novel, effective, economical and harmless therapies that will restore and maintain the normal phase of the operating mode of brain function. For example, the patient can wear an appropriate electronic device that sends a particular type of signal to the brain which will affect remission and prevent relapses without harm. We can thus avoid the use of pharmacological agents which have limited effectiveness, severe, long-term side-effects and financial burden to the patient.
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Affiliation(s)
- Nicholas Pediaditakis
- Department of Psychiatric Medicine, East Carolina University School of Medicine, Greenville, NC 27858, USA.
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Doyle AE, Faraone SV, Seidman LJ, Willcutt EG, Nigg JT, Waldman ID, Pennington BF, Peart J, Biederman J. Are endophenotypes based on measures of executive functions useful for molecular genetic studies of ADHD? J Child Psychol Psychiatry 2005; 46:774-803. [PMID: 15972070 DOI: 10.1111/j.1469-7610.2005.01476.x] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND Behavioral genetic studies provide strong evidence that attention-deficit/hyperactivity disorder (ADHD) has a substantial genetic component. Yet, due to the complexity of the ADHD phenotype, questions remain as to the specific genes that contribute to this condition as well as the pathways from genes to behavior. Endophenotypes, or phenotypes that are more closely linked to the neurobiological substrate of a disorder, offer the potential to address these two issues simultaneously (Freedman, Adler, & Leonard, 1999). Thus far, potential endophenotypes for ADHD have not been systematically studied. METHOD The current paper reviews evidence supporting the use of deficits on neurocognitive measures of executive functions for this purpose. RESULTS Such deficits are a correlate of ADHD and show preliminary evidence of heritability and association with relevant candidate genes. Nonetheless, studies that have assessed the familial and genetic overlap of neurocognitive impairments with ADHD have yielded inconsistent results. CONCLUSIONS In order for executive function deficits to be used as an endophenotype for ADHD, we recommend greater attention to the neurocognitive heterogeneity of this disorder and to the precision of measurement of the neuropsychological tests employed. We also discuss empirical strategies that may be necessary to allow such research to progress prior to full resolution of the pathophysiological basis of ADHD.
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Affiliation(s)
- Alysa E Doyle
- Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
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Doyle AE, Willcutt EG, Seidman LJ, Biederman J, Chouinard VA, Silva J, Faraone SV. Attention-deficit/hyperactivity disorder endophenotypes. Biol Psychiatry 2005; 57:1324-35. [PMID: 15950005 DOI: 10.1016/j.biopsych.2005.03.015] [Citation(s) in RCA: 143] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2004] [Revised: 03/09/2005] [Accepted: 03/09/2005] [Indexed: 01/21/2023]
Abstract
Attention-deficit/hyperactivity disorder (ADHD) is a highly heritable disorder with a multifactorial pattern of inheritance. For complex conditions such as this, biologically based phenotypes that lie in the pathway from genes to behavior may provide a more powerful target for molecular genetic studies than the disorder as a whole. Although their use in ADHD is relatively new, such "endophenotypes" have aided the clarification of the etiology and pathophysiology of several other conditions in medicine and psychiatry. In this article, we review existing data on potential endophenotypes for ADHD, emphasizing neuropsychological deficits because assessment tools are cost effective and relatively easy to implement. Neuropsychological impairments, as well as measures from neuroimaging and electrophysiological paradigms, show correlations with ADHD and evidence of heritability, but the familial or genetic overlap between these constructs and ADHD remains unclear. We conclude that these endophenotypes will not be a quick fix for the field but offer potential if careful consideration is given to issues of heterogeneity, measurement and statistical power.
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Affiliation(s)
- Alysa E Doyle
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA.
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Posner J, Russell JA, Peterson BS. The circumplex model of affect: an integrative approach to affective neuroscience, cognitive development, and psychopathology. Dev Psychopathol 2005; 17:715-34. [PMID: 16262989 PMCID: PMC2367156 DOI: 10.1017/s0954579405050340] [Citation(s) in RCA: 777] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The circumplex model of affect proposes that all affective states arise from cognitive interpretations of core neural sensations that are the product of two independent neurophysiological systems. This model stands in contrast to theories of basic emotions, which posit that a discrete and independent neural system subserves every emotion. We propose that basic emotion theories no longer explain adequately the vast number of empirical observations from studies in affective neuroscience, and we suggest that a conceptual shift is needed in the empirical approaches taken to the study of emotion and affective psychopathologies. The circumplex model of affect is more consistent with many recent findings from behavioral, cognitive neuroscience, neuroimaging, and developmental studies of affect. Moreover, the model offers new theoretical and empirical approaches to studying the development of affective disorders as well as the genetic and cognitive underpinnings of affective processing within the central nervous system.
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Affiliation(s)
- Jonathan Posner
- Columbia College of Physicians & Surgeons
- New York State Psychiatric Institute
| | | | - Bradley S. Peterson
- Columbia College of Physicians & Surgeons
- New York State Psychiatric Institute
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Robertson HA, Kutcher SP, Lagace DC. No evidence of attentional deficits in stabilized bipolar youth relative to unipolar and control comparators. Bipolar Disord 2003; 5:330-9. [PMID: 14525553 DOI: 10.1034/j.1399-5618.2003.00042.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The purpose of this study was to determine the presence or absence of attentional problems and prior diagnosis of ADHD in a cohort of stabilized bipolar I relative to unipolar and normal control. METHOD Indices of attention were obtained from bipolar (n = 44), unipolar (n = 30), and normal controls (n = 45). Measures included: Freedom from Distractibility (FD) Composite Index of the WISC III, Conners' Continuous Performance Test (CPT), Wisconsin Card Sorting Test (WCST), and a checklist measure of subjective cognitive/attentional problems (SIP-AV). RESULTS Bipolar (6.8%), unipolar (10%), and no control youth report a prior diagnosis of ADHD. No significant group or sex differences were observed on FD Composite Index, various CPT indices, or the WCST. Despite normative attentional function by objective testing, subjectively experienced cognitive problems in the clinical probands were reported. CONCLUSIONS This cohort of well-functioning bipolar youth diagnosed on average 3-4 years prior to assessment do not possess attentional deficits based on a variety of objective tests compared to unipolar or control youth, but self report subjective difficulties in attentional/problem solving ability. In contrast to other authors, we do not find that bipolar youth have high rates of comorbid ADHD.
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Affiliation(s)
- Heather A Robertson
- Department of Psychiatry, Dalhousie University, Pediatric Pain Laboratory, IWK-Grace Health Centre, Halifax, Nova Scotia, Canada
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