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Dopamine Receptor Expression and the Pathogenesis of Attention-Deficit Hyperactivity Disorder: a Scoping Review of the Literature. CURRENT DEVELOPMENTAL DISORDERS REPORTS 2022. [DOI: 10.1007/s40474-022-00253-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Şahan E, Zengin Eroğlu M, Sertçelik S. Eating behaviors, depression, and anxiety levels of pre bariatric surgery patients with obesity comorbid with or without Attention deficit and hyperactivity disorder: ADHD or Major Depression? Which is more related with eating behaviors? Brain Behav 2021; 11:e01915. [PMID: 33118314 PMCID: PMC7821566 DOI: 10.1002/brb3.1915] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 09/02/2020] [Accepted: 10/09/2020] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE A high rate of attention deficit and hyperactivity disorder (ADHD) has been reported in patients undergoing obesity treatment. It is controversial whether ADHD solely or its comorbid disorders account for eating behaviors associated with obesity. METHODS After presurgery psychiatric assessment, 100 severely obese patients (50 with ADHD and 50 without ADHD) were administered Adult Attention Deficit Hyperactivity Disorder Self-Report Scale(ASRS), Wender Utah Rating Scale(WURS), Three-Factor Eating Questionnaire(TFEQ), and Beck Depression Inventory(BDI) and Beck Anxiety Inventory(BAI). RESULTS Patients with obesity and ADHD had significantly greater emotional eating, susceptibility to hunger, depression, and anxiety but less restraint of eating scores than those without ADHD. Disinhibition of eating scores and presence of Binge Eating Disorder(BED) did not differ significantly between ADHD and non-ADHD groups. Obese patients with major depression had significantly higher ASRS, WURS, TFEQ, BAI scores, disinhibition of eating control, emotional eating, susceptibility to hunger, and diagnosis of BED than nondepressed ones. CONCLUSIONS Major depression and anxiety disorder have associations with disinhibition of eating control, emotional eating, susceptibility to hunger and BED, ADHD. Disinhibition of eating and BED did not differ according to the presence of ADHD; thus, depression was associated with eating control on more constructs than ADHD in our study.
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Affiliation(s)
- Ebru Şahan
- Department of PsychiatryMarmara UniversityİstanbulTurkey
| | - Meliha Zengin Eroğlu
- Department of PsychiatryHaydarpaşa Numune Training and Research HospitalİstanbulTurkey
| | - Sencan Sertçelik
- Department of PsychiatryHaydarpaşa Numune Training and Research HospitalİstanbulTurkey
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3
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Geuijen PM, Buitelaar JK, Fliers EA, Maras A, Schweren LJS, Oosterlaan J, Hoekstra PJ, Franke B, Hartman CA, Rommelse NN. Overweight in family members of probands with ADHD. Eur Child Adolesc Psychiatry 2019; 28:1659-1669. [PMID: 31004292 PMCID: PMC6861202 DOI: 10.1007/s00787-019-01331-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 04/01/2019] [Indexed: 12/12/2022]
Abstract
The widely reported association between ADHD and overweight may be attributable to genetic and environmental factors also present in unaffected family members. Therefore, the purpose of this study was to examine the association between ADHD and overweight within families. A cohort was used of families with at least one member with ADHD, recruited as part of the Dutch node of the International Multicenter ADHD Genetics (IMAGE) study, with assessments taking place between 2003 and 2006, 2009 and 2012, and 2013 and 2015. The three assessment waves yielded N = 1828 youth assessments and N = 998 parent assessments from N = 447 unique families. Overweight was defined as a body mass index (BMI) ≥ 85th percentile for youth of the same age and sex; overweight in adults as a BMI ≥ 25. Effects of age, gender, and medication use (psychostimulants, antipsychotics, and melatonin) were taken into account. Generalized estimation equations were used to correct for within-family and within-subject correlations. There was no difference in risk between ADHD-affected youth and their unaffected siblings (OR 0.92, 95% CI 0.78-1.09). However, compared to population prevalence data, all ADHD family members alike were at increased risk for being overweight: ADHD-affected youth (OR 1.33, 95% CI 1.13-1.59), unaffected siblings (OR 1.73, 95% CI 1.45-2.08), mothers (OR 1.74, 95% CI 1.40-2.17) and fathers (OR 1.78, 95% CI 1.46-2.15). Parental overweight-but not parental ADHD-was predictive of offspring overweight (mothers OR 1.40; 95% CI 1.14-1.73, fathers OR 1.83; 95% CI 1.41-2.36). Being overweight runs in ADHD families, yet is not specifically linked to ADHD within families. Shared unhealthy lifestyle factors (including nutrition, sleep, exercise, stress) as well as genetic factors shared by family members likely explain the findings.
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Affiliation(s)
- Pauline M Geuijen
- Karakter Child and Adolescent Psychiatry University Center, Reinier Postlaan 12, 6525 GC, Nijmegen, The Netherlands.
- Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Jan K Buitelaar
- Karakter Child and Adolescent Psychiatry University Center, Reinier Postlaan 12, 6525 GC, Nijmegen, The Netherlands
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Ellen A Fliers
- Virenze Child and Adolescent Psychiatry, Gorinchem, The Netherlands
- Yulius Academy, Yulius Mental Health Organization, Barendrecht, The Netherlands
| | - Athanasios Maras
- Yulius Academy, Yulius Mental Health Organization, Barendrecht, The Netherlands
| | - Lizanne J S Schweren
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jaap Oosterlaan
- Clinical Neuropsychology Section, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
- Department of Pediatrics, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
| | - Pieter J Hoekstra
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
- Accare University Child and Adolescent Psychiatry Center, Groningen, The Netherlands
| | - Barbara Franke
- Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Catharina A Hartman
- Department of Psychiatry, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Nanda N Rommelse
- Karakter Child and Adolescent Psychiatry University Center, Reinier Postlaan 12, 6525 GC, Nijmegen, The Netherlands
- Department of Psychiatry, Donders Institute for Brain, Cognition and Behaviour, Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands
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Matheson BE, Eichen DM. A Review of Childhood Behavioral Problems and Disorders in the Development of Obesity: Attention Deficit/Hyperactivity Disorder, Autism Spectrum Disorder, and Beyond. Curr Obes Rep 2018; 7:19-26. [PMID: 29411333 DOI: 10.1007/s13679-018-0293-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE OF REVIEW Given the high rates of pediatric and adult obesity, it is imperative to identify early risk factors that might contribute to excess weight gain. This review aims to investigate the relationship between childhood behavioral problems with the development and persistence of obesity. Specifically, this review highlights the association of obesity with (1) neurocognitive constructs, such as executive functioning and inhibition/impulsivity, and (2) disorders commonly diagnosed in childhood, including attention deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). RECENT FINDINGS Consistent evidence supports a relationship between childhood behavioral problems, executive functioning, inhibition/impulsivity, ADHD, and ASD with obesity across the lifespan. Longitudinal studies suggest behavior problems, neurocognitive functioning deficits, and ADHD symptoms in childhood predict weight gain over time. Identifying risk factors in childhood that promote obesity may help develop targeted intervention and prevention programs. Additional research should elucidate mechanisms that account for these relationships.
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Affiliation(s)
- Brittany E Matheson
- Joint Doctoral Program in Clinical Psychology, San Diego State University/University of California, San Diego, 6363 Alvarado Court, San Diego, CA, 92120, USA.
- Department of Psychiatry, University of California, San Diego, 8950 Villa La Jolla Dr. Suite C-203, San Diego, CA, 92037, USA.
| | - Dawn M Eichen
- Department of Pediatrics, University of California, San Diego, 8950 Villa La Jolla Dr. Suite C-203, San Diego, CA, 92037, USA
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5
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Instanes JT, Klungsøyr K, Halmøy A, Fasmer OB, Haavik J. Adult ADHD and Comorbid Somatic Disease: A Systematic Literature Review. J Atten Disord 2018; 22:203-228. [PMID: 27664125 PMCID: PMC5987989 DOI: 10.1177/1087054716669589] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To systematically review, synthesize, and appraise available evidence, connecting adult ADHD with somatic disease. METHOD Embase, Psychinfo, and Medline databases were searched for studies published from 1994 to 2015 addressing adult ADHD and somatic comorbidity. Somatic conditions were classified according to International Classification of Diseases (ICD-10) codes. Levels of evidence were graded as inconclusive, tentative, or well documented. RESULTS Most of the 126 studies included in the qualitative synthesis were small and of modest quality. Obesity, sleep disorders, and asthma were well-documented comorbidities in adult ADHD. Tentative evidence was found for an association between adult ADHD and migraine and celiac disease. In a large health registry study, cardiovascular disease was not associated with adult ADHD. CONCLUSION There are few large systematic studies using standardized diagnostic criteria evaluating adult ADHD and somatic comorbidities. Significant associations are found between adult ADHD and several somatic diseases, and these are important to consider when assessing and treating either adult ADHD or the somatic diseases.
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Affiliation(s)
- Johanne Telnes Instanes
- Department of Biomedicine, University of Bergen, Norway,K.G. Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, Norway,Johanne Telnes Instanes, K.G. Jebsen Centre for Neuropsychiatric Disorders, Department of Biomedicine, University of Bergen, Jonas Lies vei 91, N-5009 Bergen, Norway.
| | - Kari Klungsøyr
- Department of Global Public Health and Primary Care, University of Bergen, Norway,Norwegian Institute of Public Health, Bergen, Norway
| | - Anne Halmøy
- Department of Biomedicine, University of Bergen, Norway,K.G. Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, Norway,Haukeland University Hospital, Bergen, Norway
| | - Ole Bernt Fasmer
- K.G. Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, Norway,Haukeland University Hospital, Bergen, Norway,Department of Clinical Medicine, University of Bergen, Norway
| | - Jan Haavik
- Department of Biomedicine, University of Bergen, Norway,K.G. Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, Norway,Haukeland University Hospital, Bergen, Norway
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6
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Capusan AJ, Yao S, Kuja-Halkola R, Bulik CM, Thornton LM, Bendtsen P, Marteinsdottir I, Thorsell A, Larsson H. Genetic and environmental aspects in the association between attention-deficit hyperactivity disorder symptoms and binge-eating behavior in adults: a twin study. Psychol Med 2017; 47:2866-2878. [PMID: 28578734 DOI: 10.1017/s0033291717001416] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Prior research demonstrated that attention-deficit hyperactivity disorder (ADHD) is associated with binge-eating behavior, binge-eating disorder (BED), and bulimia nervosa (BN). The aim of this study was to investigate these associations in an adult twin population, and to determine the extent to which ADHD symptoms and binge-eating behavior share genetic and environmental factors. METHODS We used self-reports of current ADHD symptoms and lifetime binge-eating behavior and associated characteristics from a sample of over 18 000 adult twins aged 20-46 years, from the population-based Swedish Twin Registry. Mixed-effects logistic regression was used to examine the association between ADHD and lifetime binge-eating behavior, BED, and BN. Structural equation modeling was used in 13 773 female twins to determine the relative contribution of genetic and environmental factors to the association between ADHD symptoms and binge-eating behavior in female adult twins. RESULTS ADHD symptoms were significantly associated with lifetime binge-eating behavior, BED, and BN. The heritability estimate for current ADHD symptoms was 0.42 [95% confidence interval (CI) 0.41-0.44], and for lifetime binge-eating behavior 0.65 (95% CI 0.54-0.74). The genetic correlation was estimated as 0.35 (95% CI 0.25-0.46) and the covariance between ADHD and binge-eating behavior was primarily explained by genetic factors (91%). Non-shared environmental factors explained the remaining part of the covariance. CONCLUSIONS The association between adult ADHD symptoms and binge-eating behavior in females is largely explained by shared genetic risk factors.
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Affiliation(s)
- A J Capusan
- Department of Psychiatry and Department of Clinical and Experimental Medicine,Linköping University,Sweden
| | - S Yao
- Department of Medical Epidemiology and Biostatistics,Karolinska Institutet,Stockholm,Sweden
| | - R Kuja-Halkola
- Department of Medical Epidemiology and Biostatistics,Karolinska Institutet,Stockholm,Sweden
| | - C M Bulik
- Department of Medical Epidemiology and Biostatistics,Karolinska Institutet,Stockholm,Sweden
| | - L M Thornton
- Department of Psychiatry,University of North Carolina at Chapel Hill,Chapel Hill,USA
| | - P Bendtsen
- Department of Medical Specialist and Department of Medical and Health Sciences,Linköping University,Motala,Sweden
| | - I Marteinsdottir
- Department of Clinical and Experimental Medicine,Center for Social and Affective Neuroscience (CSAN), Linköping University,Linköping,Sweden
| | - A Thorsell
- Department of Clinical and Experimental Medicine,Center for Social and Affective Neuroscience (CSAN), Linköping University,Linköping,Sweden
| | - H Larsson
- Department of Medical Epidemiology and Biostatistics,Karolinska Institutet,Stockholm,Sweden
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Carlucci S, Ivanova I, Bissada H, Tasca GA. Validity and reliability of the attention deficit hyperactivity disorder self-report scale (ASRS-v1.1) in a clinical sample with eating disorders. Eat Behav 2017; 26:148-154. [PMID: 28390269 DOI: 10.1016/j.eatbeh.2017.03.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/23/2017] [Accepted: 03/29/2017] [Indexed: 11/15/2022]
Abstract
Individuals with eating disorders (EDs) commonly experience comorbid attention deficit hyperactivity disorder (ADHD). The shared features of EDs and ADHD, such as inattention, impulsivity and hyperactivity, may exacerbate ED symptomatology and pose challenges to treatment. It is important to screen patients with EDs for symptoms of ADHD to optimize their treatment outcomes. However, the psychometrics of common measures of ADHD have not yet been examined within an ED population. An example of such a measure is the ADHD self-report scale (ASRS-v1.1) symptom checklist, which identifies the presence of ADHD symptoms. This study reports a psychometric study of the ASRS-v1.1 in a clinical sample of 500 adults with an ED. A confirmatory factor analysis indicated the ASRS-v1.1 maintained its two-factor structure of inattention and impulsivity/hyperactivity. The item loadings demonstrated path invariance across ED diagnostic groups indicating construct validity. Further, the subscales exhibited good internal consistency and they were significantly correlated with other measures of impulsivity indicating convergent validity. The ED sample had significantly higher mean scores than published nonclinical norms indicating predictive validity, but the ASRS-v1.1 scores were not significantly different among ED diagnostic groups. Results suggest the ASRS-v1.1 is a valid and reliable screening tool for identifying symptoms of ADHD among adults seeking treatment for ED.
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Affiliation(s)
| | - Iryna Ivanova
- Ottawa Hospital Research Institute, Ottawa, ON K1G 0H9, Canada; The Ottawa Hospital, 501 Smyth Road, Ottawa, ON K1G 0H9, Canada
| | - Hany Bissada
- Ottawa Hospital Research Institute, Ottawa, ON K1G 0H9, Canada; The Ottawa Hospital, 501 Smyth Road, Ottawa, ON K1G 0H9, Canada
| | - Giorgio A Tasca
- University of Ottawa, 75 Laurier Ave. E, Ottawa, ON K1N 6N5, Canada; Ottawa Hospital Research Institute, Ottawa, ON K1G 0H9, Canada; The Ottawa Hospital, 501 Smyth Road, Ottawa, ON K1G 0H9, Canada.
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8
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Dopamine D3 receptor status modulates sexual dimorphism in voluntary wheel running behavior in mice. Behav Brain Res 2017; 333:235-241. [PMID: 28684358 DOI: 10.1016/j.bbr.2017.06.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/21/2017] [Accepted: 06/26/2017] [Indexed: 11/22/2022]
Abstract
Sexual dimorphism has been described in various aspects of physiological and pathophysiological processes involving dopaminergic signaling. This might account for the different disease characteristics in men and women in e.g. Parkinson's disease or ADHD. A better understanding might contribute to the future individualization of therapy. We examined spontaneous wheel running activity of male and female mice, homo- and heterozygote for dopamine D3 receptor deficiency (D3R -/- and D3R+/-), and compared them to wild type controls. We found higher wheel running activity in female mice than in their male littermates. D3-/- mice, irrespective of sex, were also hyperactive compared to both D3+/- and wild type animals. Hyperactivity of D3-/- female mice was pronounced during the first days of wheel running but then decreased while their male counterparts continued to be hyperactive. Physical activity was menstrual cycle-dependent. Activity fluctuations were also seen in D3 receptor knockout mice and are therefore presumably independent of D3 receptor activation. Our data underscore the complex interaction of dopaminergic signaling and gonadal hormones that leads to specific running behavior. Furthermore, we detected sex- and D3 receptor status-specific reactions during novel exposure to the running wheel. These findings suggest the need for adapting dopaminergic therapies to individual factors such as sex or even menstrual cycle to optimize therapeutic success.
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9
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Attention Deficit Hyperactivity Disorder (ADHD) and disordered eating behaviour: A systematic review and a framework for future research. Clin Psychol Rev 2017; 53:109-121. [DOI: 10.1016/j.cpr.2017.03.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 02/28/2017] [Accepted: 03/01/2017] [Indexed: 11/19/2022]
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10
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Nazar BP, Bernardes C, Peachey G, Sergeant J, Mattos P, Treasure J. The risk of eating disorders comorbid with attention-deficit/hyperactivity disorder: A systematic review and meta-analysis. Int J Eat Disord 2016; 49:1045-1057. [PMID: 27859581 DOI: 10.1002/eat.22643] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 10/07/2016] [Accepted: 10/09/2016] [Indexed: 01/28/2023]
Abstract
OBJECTIVE There has been interest in whether people with Attention-Deficit/Hyperactivity Disorder (ADHD) are at higher risk of developing an Eating Disorder (ED). The aim of this study was estimate the size of this association with a meta-analysis of studies. METHODS We retrieved studies following PRISMA guidelines from a broad range of databases. RESULTS Twelve studies fitted our primary aim in investigating ED in ADHD populations (ADHD = 4,013/Controls = 29,404), and five exploring ADHD in ED populations (ED = 1,044/Controls = 11,292). The pooled odds ratio of diagnosing any ED in ADHD was increased significantly, 3.82 (95% CI:2.34-6.24). A similar level of risk was found across all ED syndromes [Anorexia Nervosa = 4.28 (95% CI:2.24-8.16); Bulimia Nervosa = 5.71 (95% CI: 3.56-9.16) and Binge Eating Disorder = 4.13 (95% CI:3-5.67)]. The risk was significantly higher if ADHD was diagnosed using a clinical interview [5.89 (95% CI:4.32-8.04)] rather than a self-report instrument [2.23 (95% CI:1.23-4.03)]. The pooled odds ratio of diagnosing ADHD in participants with ED was significantly increased, 2.57 (95% CI:1.30-5.11). Subgroup analysis of cohorts with binge eating only yielded a risk of 5.77 (95% CI:2.35-14.18). None of the variables examined in meta-regression procedures explained the variance in effect size between studies. DISCUSSION People with ADHD have a higher risk of comorbidity with an ED and people with an ED also have higher levels of comorbidity with ADHD. Future studies should address if patients with this comorbidity have a different prognosis, course and treatment response when compared to patients with either disorder alone. RESUMEN OBJETIVO Ha habido interés en saber si la gente con Trastorno por Déficit de Atención e Hiperactividad (TDAH) están en mayor riesgo de desarrollar un Trastorno de la Conducta Alimentaria (TCA). El objetivo de este estudio fue estimar el tamaño de esta asociación con un meta-análisis de los estudios. Métodos: Recuperamos estudios de una amplia gama base de datos, que siguen los lineamientos PRISMA. Resultados: Doce estudios encajaron con nuestro objetivo primario de investigar los TCA en poblaciones con TDAH (TDAH = 4,013/Controles = 29,404), y 5 exploraron TDAH en poblaciones con TCA (TCA = 1,044/Controles = 11,292). El odds ratio (OR) agrupado de diagnosticar cualquier TCA en el TDAH se incrementó significativamente, 3.82 (95% CI:2.34-6.24). Un nivel de riesgo similar fue encontrado en todos los síndromes de TCA [Anorexia Nervosa = 4.28 (95% CI:2.24-8.16); Bulimia Nervosa = 5.71 (95% CI:3.56-9.16) y Trastorno por Atracón = 4.13 (95% CI: 3-5.67)]. El riesgo fue significativamente mayor si el TDAH fue diagnosticado utilizando una entrevista clínica [5.89 (95% CI:4.32-8.04)] en lugar de un instrumento de auto-reporte [2.23 (95% CI:1.23-4.03)]. El odds ratio (OR) agrupado de diagnosticar TDAH en participantes con TCA fue significativamente incrementado, 2.57 (95% CI:1.30-5.11). El análisis de los subgrupos de cohort con atracones solamente produjo un riesgo de 5.77 (95% CI:2.35-14.18). Ninguna de las variables examinadas en los procedimientos de meta-regresión explicaron la varianza en el tamaño del efecto entre los estudios. Discusión: La gente con TDAH tiene un mayor riesgo de comorbilidad con un TCA y la gente con un TCA también tiene niveles altos de comorbilidad con TDAH. Los estudios futuros deberán abordar si los pacientes con esta comorbilidad tienen diferente pronóstico, curso y respuesta a tratamiento cuando son comparados con pacientes que solamente tienen uno de los trastornos. © 2016 Wiley Periodicals, Inc. (Int J Eat Disord 2016) © 2016 Wiley Periodicals, Inc. (Int J Eat Disord 2016; 49:1045-1057).
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Affiliation(s)
- Bruno Palazzo Nazar
- Institute of Psychiatry (IPUB-UFRJ), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience (IOPPN), King's College, London
| | - Camila Bernardes
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | - Gemma Peachey
- South London and the Maudsley National Health Trust (SLaM - NHS), London
| | | | - Paulo Mattos
- Institute of Psychiatry (IPUB-UFRJ), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | - Janet Treasure
- Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience (IOPPN), King's College, London.,South London and the Maudsley National Health Trust (SLaM - NHS), London
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11
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Levin RL, Rawana JS. Attention-deficit/hyperactivity disorder and eating disorders across the lifespan: A systematic review of the literature. Clin Psychol Rev 2016; 50:22-36. [PMID: 27693587 DOI: 10.1016/j.cpr.2016.09.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 09/07/2016] [Accepted: 09/21/2016] [Indexed: 12/25/2022]
Abstract
Attention-deficit/hyperactivity disorder (ADHD) and eating disorders are common and concerning mental health disorders. There is both empirical and theoretical support for an association between ADHD and eating disorders or disordered eating. This systematic review aims to summarize the extant literature on the comorbidity of ADHD and eating disorders across the lifespan, including the influences of sex, age, eating disorder diagnosis, and potential mediators. A total of 37 peer-reviewed studies on diagnosed ADHD and eating disturbances were identified through key research databases. Twenty-six studies supported a strong empirical association between ADHD and eating disorders or disordered eating. The systematic review findings suggest that children with ADHD are at risk for disordered eating, while adolescents, emerging adults, and adults are at risk for both eating disorders and disordered eating. Methodological considerations, future research, and clinical implications are discussed.
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Affiliation(s)
- Rivka L Levin
- York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - Jennine S Rawana
- York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
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12
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Taymur I, Budak E, Onen S, Bicer B, Dilektaslı E, Cayci M, Demirci H, Gungor BB. The Relationship Between Childhood and Adult Attention-Deficit–Hyperactivity Disorder and General Psychopathological Features in Individuals Who Apply for Bariatric Surgery. Bariatr Surg Pract Patient Care 2016. [DOI: 10.1089/bari.2016.0003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ibrahim Taymur
- Department of Psychiatry, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Ersin Budak
- Department of Psychology, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Sinay Onen
- Department of Psychiatry, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Bilgen Bicer
- Department of Psychiatry, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Evren Dilektaslı
- Department of Gastroenterological Surgery, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Murat Cayci
- Department of Gastroenterological Surgery, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Hakan Demirci
- Department of Family Medicine, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - Buket Belkiz Gungor
- Department of Psychiatry, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
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13
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Davis C, Levitan RD, Kaplan AS, Carter-Major JC, Kennedy JL. Sex differences in subjective and objective responses to a stimulant medication (methylphenidate): Comparisons between overweight/obese adults with and without binge-eating disorder. Int J Eat Disord 2016; 49:473-81. [PMID: 26691428 DOI: 10.1002/eat.22493] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 11/21/2015] [Accepted: 11/22/2015] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The purpose of this study was to examine sex differences in response to a single dose of a psychomotor-stimulant medication (methylphenidate: MP) and to assess whether expected differences were moderated by binge-eating disorder (BED) status. It is anticipated that findings will shed light on factors that contribute to response variation in the use of stimulant pharmacotherapy to treat BED. METHOD The study employed a double-blind, drug-placebo, cross-over design in overweight/obese adults with BED (n = 90) and without BED (n = 108). Emotional/mood ratings were assessed every 15 minutes after oral administration of the drug/placebo, and appetite, cravings, and consumption were assessed during a laboratory-based snack-food challenge. RESULTS Women reported earlier and more sustained "overall" effects of the drug-including "feeling high"-than the men. There was also a significantly greater suppression in appetite ratings, food cravings, and food consumption from the placebo to the drug condition among the women. Indeed, among men there were no significant differences between the two conditions on any of the food-related variables. BED status also did not moderate any of the drug-placebo differences. DISCUSSION These findings are relevant to the use of stimulant pharmacotherapy for BED, and raise the possibility that overweight/obese men may be relatively less responsive to this form of treatment. © 2015 Wiley Periodicals, Inc. (Int J Eat Disord 2016; 49:473-481).
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Affiliation(s)
- Caroline Davis
- Kinesiology & Health Sciences, York University, Toronto, Canada.,Centre for Addiction and Mental Health, Toronto, Canada
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14
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Türkoğlu S, Bilgiç A, Akça ÖF. ADHD symptoms, breast-feeding and obesity in children and adolescents. Pediatr Int 2015; 57:546-51. [PMID: 25625700 DOI: 10.1111/ped.12593] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 11/28/2014] [Accepted: 01/16/2015] [Indexed: 01/21/2023]
Abstract
BACKGROUND Attention-deficit-hyperactivity disorder (ADHD) has been found to be related to overweight/obesity in children and adolescents, but it is a heterogeneous disorder, and the relationships between the dimensions of ADHD and overweight/obesity are not clear. The aim of this study was to explore which dimensions of the disorder are specifically associated with overweight/obesity. METHODS The study sample consisted of 300 treatment-naive children with ADHD and 75 healthy controls aged 7-17 years. The ADHD module of the Kiddie Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version was used to diagnose ADHD. The severity of ADHD symptoms was assessed via Conners' Parent Rating Scale (CPRS). The weight, height, and breast-feeding duration of the study samples and controls were recorded. Body mass index (BMI) was categorized according to the national age/sex-specific reference values. RESULTS The rate of overweight/obese children was higher in the ADHD group. The association between ADHD symptoms and BMI percentile scores was evaluated using structural equation modeling. In that model, it was observed that the Cognitive Problems/Inattentive and Oppositional subscores of the CPRS had a positive predictive effect on the BMI percentile scores, but breast-feeding duration had a negative predictive effect on the BMI percentile scores. CONCLUSION Inattention, oppositionality and breast-feeding duration were associated with overweight/obesity in children and adolescents with ADHD. Longitudinal studies are needed to more fully understand this relationship and the mechanisms underlying the association between ADHD and overweight/obesity.
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Affiliation(s)
- Serhat Türkoğlu
- Department of Child and Adolescent Psychiatry, Faculty of Medicine, Selçuk University, Konya, Turkey
| | - Ayhan Bilgiç
- Department of Child and Adolescent Psychiatry, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Ömer Faruk Akça
- Department of Child and Adolescent Psychiatry, Meram Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
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15
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Khalife N, Kantomaa M, Glover V, Tammelin T, Laitinen J, Ebeling H, Hurtig T, Jarvelin MR, Rodriguez A. Childhood attention-deficit/hyperactivity disorder symptoms are risk factors for obesity and physical inactivity in adolescence. J Am Acad Child Adolesc Psychiatry 2014; 53:425-36. [PMID: 24655652 DOI: 10.1016/j.jaac.2014.01.009] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 01/22/2014] [Accepted: 01/27/2014] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To prospectively investigate the association and directionality between attention-deficit/hyperactivity disorder (ADHD) symptoms and obesity from childhood to adolescence in the general population. We examined whether obesogenic behaviors, namely, physical inactivity and binge eating, underlie the potential ADHD symptom-obesity association. We explored whether childhood conduct disorder (CD) symptoms are related to adolescent obesity/physical inactivity. METHOD At 7 to 8 years (n = 8,106), teachers reported ADHD and CD symptoms, and parents reported body mass index (BMI) and physically active play. At 16 years (n = 6,934), parents reported ADHD symptoms; adolescents reported physical activity (transformed to metabolic equivalent of task [MET] hours per week) and binge eating; BMI and waist-hip ratio (WHR) were measured via clinical examination. Obesity was defined using the International Obesity Task Force (IOTF) cut-offs for BMI and the 95th percentile cut-off for WHR. RESULTS Childhood ADHD symptoms significantly predicted adolescent obesity, rather than the opposite. Inattention-hyperactivity symptoms at 8 years were associated with indices of obesity at 16 years (obese BMI: odds ratio [OR] = 1.91, 95% confidence interval [CI] = 1.10-3.33; 95th percentile WHR: OR = 1.71, 95% CI = 1.05-2.78), adjusted for gender, baseline BMI, physical activity, family structure change, and maternal education. Child CD symptoms associated with indices of adolescent obesity. Reduced physically active play in childhood predicted adolescent inattention (OR = 1.61, 95% CI = 1.16-2.24). Childhood ADHD and CD symptoms were linked with physical inactivity in adolescence (inattention-hyperactivity; OR = 1.60, 95% CI = 1.20-2.13), but not binge eating. Physical inactivity mediated the associations. CONCLUSIONS Children with ADHD or CD symptoms are at increased risk for becoming obese and physically inactive adolescents. Physical activity may be beneficial for both behavior problems and obesity.
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Affiliation(s)
| | - Marko Kantomaa
- Imperial College London, UK; LIKES - Research Center for Sports and Health Sciences, Finland
| | | | - Tuija Tammelin
- LIKES - Research Center for Sports and Health Sciences, Finland
| | | | - Hanna Ebeling
- Clinic of Child Psychiatry, University and University Hospital of Oulu, Finland
| | - Tuula Hurtig
- Institute of Health Sciences, University of Oulu, Finland
| | - Marjo-Riitta Jarvelin
- Imperial College London, UK; Medical Research Council (MRC) Health Protection Agency (HMA) Centre for Environment and Health, Imperial College, UK; Institute of Health Sciences, University of Oulu, Finland; Biocenter Oulu, University of Oulu, Finland; Unit of Primary Care, Oulu University Hospital, Finland; and the National Institute for Health and Welfare, Finland
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16
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Gold MS, Blum K, Oscar-Berman M, Braverman ER. Low dopamine function in attention deficit/hyperactivity disorder: should genotyping signify early diagnosis in children? Postgrad Med 2014; 126:153-77. [PMID: 24393762 DOI: 10.3810/pgm.2014.01.2735] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Attention deficit/hyperactivity disorder (ADHD) is present in 8% to 12% of children, and 4% of adults worldwide. Children with ADHD can have learning impairments, poor selfesteem, social dysfunction, and an increased risk of substance abuse, including cigarette smoking. Overall, the rate of treatment with medication for patients with ADHD has been increasing since 2008, with ≥ 2 million children now being treated with stimulants. The rise of adolescent prescription ADHD medication abuse has occurred along with a concomitant increase of stimulant medication availability. Of adults presenting with a substance use disorder (SUD), 20% to 30% have concurrent ADHD, and 20% to 40% of adults with ADHD have a history of SUD. Following a brief review of the etiology of ADHD, its diagnosis and treatment, we focus on the benefits of early and appropriate testing for a predisposition to ADHD. We suggest that by genotyping patients for a number of known, associated dopaminergic polymorphisms, especially at an early age, misdiagnoses and/or over-diagnosis can be reduced. Ethical and legal issues of early genotyping are considered. As many as 30% of individuals with ADHD are estimated to either have secondary side-effects or are not responsive to stimulant medication. We also consider the benefits of non-stimulant medication and alternative treatment modalities, which include diet, herbal medications, iron supplementation, and neurofeedback. With the goals of improving treatment of patients with ADHD and SUD prevention, we encourage further work in both genetic diagnosis and novel treatment approaches.
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Affiliation(s)
- Mark S Gold
- Department of Psychiatry, School of Medicine and McKnight Brain Institute, University of Florida, Gainesville, FL.
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17
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Fernández-Aranda F, Agüera Z, Castro R, Jiménez-Murcia S, Ramos-Quiroga JA, Bosch R, Fagundo AB, Granero R, Penelo E, Claes L, Sánchez I, Riesco N, Casas M, Menchon JM. ADHD symptomatology in eating disorders: a secondary psychopathological measure of severity? BMC Psychiatry 2013; 13:166. [PMID: 23758944 PMCID: PMC3693886 DOI: 10.1186/1471-244x-13-166] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 06/05/2013] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Attention-deficit/hyperactivity disorder (ADHD) has commonly been described in psychiatric disorders. Although several studies have found positive associations between abnormal eating patterns during childhood and ADHD, there is a lack of studies on ADHD and Eating Disorders (ED). The aims of this exploratory study were 1) to assess the ADHD symptoms level in ED and to ascertain whether there are differences among ED subtypes; 2) to analyze whether the presence of ADHD symptoms is associated with more severe eating disorder symptoms and greater general psychopathology; and 3) to assess whether the ADHD symptoms level is associated with specific temperament and character traits. METHODS 191 female ED patients were included. Assessment was carried out with the EDI-2, ASRS-v1.1, the SCL-90-R and the TCI-R. RESULTS The ADHD symptoms level was similar in bulimia, eating disorder not otherwise specified and binge eating subtypes, and lower in anorexic patients. Obsessiveness and Hostility were significantly positively associated with ADHD symptoms. A path model showed that ADHD was associated with high Novelty Seeking and low Self-Directedness, whereas ED severity was influenced by ADHD severity and low Self-Directedness. CONCLUSIONS Bingeing/purging ED subtypes have a high ADHD symptoms level, also related with more severe eating, general and personality psychopathology.
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Affiliation(s)
| | - Zaida Agüera
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain,CIBER Fisiología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Barcelona, Spain
| | - Rita Castro
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Susana Jiménez-Murcia
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain,CIBER Fisiología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Barcelona, Spain,Clinical Sciences Department, School of Medicine, University of Barcelona, Barcelona, Spain
| | - Jose Antoni Ramos-Quiroga
- Department of Psychiatry, University Hospital of Vall d´Hebron, Barcelona, Spain,CIBER Salud Mental (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain,Department of Psychiatry and Legal Medicine, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Rosa Bosch
- Department of Psychiatry, University Hospital of Vall d´Hebron, Barcelona, Spain,CIBER Salud Mental (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain
| | - Ana Beatriz Fagundo
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain,CIBER Fisiología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Barcelona, Spain
| | - Roser Granero
- CIBER Fisiología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Barcelona, Spain,Departament de Psicobiologia i Metodologia, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Eva Penelo
- Departament de Psicobiologia i Metodologia, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Laurence Claes
- Department of Psychology, University of Leuven, Leuven, Belgium
| | - Isabel Sánchez
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Nadine Riesco
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Miquel Casas
- Department of Psychiatry, University Hospital of Vall d´Hebron, Barcelona, Spain,CIBER Salud Mental (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain,Department of Psychiatry and Legal Medicine, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Jose Manuel Menchon
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain,Clinical Sciences Department, School of Medicine, University of Barcelona, Barcelona, Spain,CIBER Salud Mental (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain
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18
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Abstract
The adult form of attention deficit/hyperactivity disorder (aADHD) has a prevalence of up to 5% and is the most severe long-term outcome of this common neurodevelopmental disorder. Family studies in clinical samples suggest an increased familial liability for aADHD compared with childhood ADHD (cADHD), whereas twin studies based on self-rated symptoms in adult population samples show moderate heritability estimates of 30-40%. However, using multiple sources of information, the heritability of clinically diagnosed aADHD and cADHD is very similar. Results of candidate gene as well as genome-wide molecular genetic studies in aADHD samples implicate some of the same genes involved in ADHD in children, although in some cases different alleles and different genes may be responsible for adult versus childhood ADHD. Linkage studies have been successful in identifying loci for aADHD and led to the identification of LPHN3 and CDH13 as novel genes associated with ADHD across the lifespan. In addition, studies of rare genetic variants have identified probable causative mutations for aADHD. Use of endophenotypes based on neuropsychology and neuroimaging, as well as next-generation genome analysis and improved statistical and bioinformatic analysis methods hold the promise of identifying additional genetic variants involved in disease etiology. Large, international collaborations have paved the way for well-powered studies. Progress in identifying aADHD risk genes may provide us with tools for the prediction of disease progression in the clinic and better treatment, and ultimately may help to prevent persistence of ADHD into adulthood.
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19
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Hanć T, Cieślik J, Wolańczyk T, Gajdzik M. Assessment of growth in pharmacological treatment-naïve Polish boys with attention-deficit/hyperactivity disorder. J Child Adolesc Psychopharmacol 2012; 22:300-6. [PMID: 22897665 DOI: 10.1089/cap.2010.0113] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECTIVE The objective of this study was to estimate the growth of pharmacological treatment-naïve polish boys with attention-deficit/hyperactivity disorder (ADHD). METHOD The sample included 135 boys (mean age: 11.67 years) with ADHD. The level of subjects' height, weight, and body mass index (BMI) was compared to the reference growth charts. Full estimation of measurement accuracy was provided. Regression analysis was used to estimate the biological and social factors contributing to the growth determination in the examined group. RESULTS There were no statistically significant differences between mean body height of boys with ADHD and standards of growth of Polish children. Separate analyses for body height of the examined boys aged 6-10, 11-15, and 16-18 years also gave no statistically significant results. Mean body weight (z=0.28) and BMI (z=0.25) in the total cohort were statistically higher than the norm. After categorization of the boys according to age, statistically significant differences were demonstrated only for weight in the age range of 6-10 years (z=0.31) and for BMI in the age range of 11-15y (z=0.42). The regression analysis showed the strongest relation between the subjects' growth and the parents' body size, newborn's condition (birth, body weight, and APGAR score), factors connected with lifestyle, and socio-economic status of the family. CONCLUSION The study revealed that the height of drug-naïve boys with ADHD was not significantly different from the norm. The investigation also showed a tendency for greater body weight and BMI in boys with ADHD in comparison with the growth charts, which may be manifested also in greater risk of overweight and obesity in this group. The results of research suggest the necessity to control for such variables as genetic, perinatal, socioeconomic, and psychosocial factors, which may affect children's development, in future research on the growth of children with ADHD.
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Affiliation(s)
- Tomasz Hanć
- Department of Human Biological Development, Institute of Anthropology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland.
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20
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Docet MF, Larrañaga A, Pérez Méndez LF, García-Mayor RV. Attention deficit hyperactivity disorder increases the risk of having abnormal eating behaviours in obese adults. Eat Weight Disord 2012; 17:e132-6. [PMID: 23010783 DOI: 10.1007/bf03325337] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE To determine the rate of abnormal eating behaviours in obese adult patients with attention deficit hyperactivity disorder (ADHD) in comparison with obese adult patients without ADHD. METHOD This case-control study includes: obese adult patients defined by a body mass index (BMI) ≥30 kg/m², screening positive in the adult ADHD self-report scale-V1.1. (ASRS-V1.1), attending the Nutrition Section, as cases; and obese adult patients screening negative, as controls. Weight, height and BMI were determined in all the participants. The rate of abnormal eating behaviours was determined using an eating pattern questionnaire. RESULTS Forty-five out of 51 (88.2%) cases vs 127 out of 179 (70.9%) controls had abnormal eating behaviours (p=0.01). Eating between-meal snacks was found in 39 (76.5%) cases vs 107 (59.8%) controls (p=0.03), going on binge eating episodes in 28 (54.9%) vs 42 (23.5%) (p=0.00), waking up at night to eat in 11 (21.6%) vs 16 (8.9%) (p=0.01), eating large amounts of food in 13 (25.5%) vs 38 (21.2%) (p=0.52), and eating in secret in 11 (21.6%) vs 16 (8.9%) (p=0.01), respectively. CONCLUSION This is the first study that determines the rate of these abnormal eating behaviours in obese adult patients with ADHD in comparison with obese adult patients without ADHD. A high rate of abnormal eating behaviours was observed in obese patients with ADHD. Our results suggest that ADHD is a risk factor for the development of these abnormal eating behaviours, which may be contributing factors of obesity and the unsuccessful treatment of obese patients.
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Affiliation(s)
- M F Docet
- Nutrition Section, University Hospital of Vigo, Vigo, Spain
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21
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Wu J, Xiao H, Sun H, Zou L, Zhu LQ. Role of dopamine receptors in ADHD: a systematic meta-analysis. Mol Neurobiol 2012; 45:605-20. [PMID: 22610946 DOI: 10.1007/s12035-012-8278-5] [Citation(s) in RCA: 171] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Accepted: 05/07/2012] [Indexed: 01/11/2023]
Abstract
The dopaminergic system plays a pivotal role in the central nervous system via its five diverse receptors (D1-D5). Dysfunction of dopaminergic system is implicated in many neuropsychological diseases, including attention deficit hyperactivity disorder (ADHD), a common mental disorder that prevalent in childhood. Understanding the relationship of five different dopamine (DA) receptors with ADHD will help us to elucidate different roles of these receptors and to develop therapeutic approaches of ADHD. This review summarized the ongoing research of DA receptor genes in ADHD pathogenesis and gathered the past published data with meta-analysis and revealed the high risk of DRD5, DRD2, and DRD4 polymorphisms in ADHD.
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Affiliation(s)
- Jing Wu
- Department of Epidemiology and Biostatistics and Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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22
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Spruyt K, Raubuck DL, Grogan K, Gozal D, Stein MA. Variable sleep schedules and outcomes in children with psychopathological problems: preliminary observations. Nat Sci Sleep 2012; 4:9-17. [PMID: 23616725 PMCID: PMC3630967 DOI: 10.2147/nss.s29299] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Night-to-night variability in sleep of children with attention deficit hyperactivity disorder (ADHD) may be a mediator of behavioral phenotype. We examined the potential association between alertness, sleep, and eating behaviors in children with ADHD and comorbid problems. METHODS Sleep was monitored by actigraphy for 7 days. Questionnaires were used to assess sleep complaints, habits and food patterns by parental report, and sleep complaints and sleepiness by child report. RESULTS The group comprised 18 children, including 15 boys, aged 9.4 ± 1.7 years, 88.9% Caucasian, who took one or multiple medications. Children slept on average for 6 hours and 58 minutes with a variability of 1 hour 3 minutes relative to the mean, and their sleepiness scores were highly variable from day to day. Most children had a normal body mass index (BMI). Sleepiness and BMI were associated with sleep schedules and food patterns, such that they accounted for 76% of variance, predominantly by the association of BMI with mean wake after sleep onset and by bedtime sleepiness, with wake after sleep onset variability. Similarly, 97% of variance was shared with eating behaviors, such as desserts and snacks, and fast food meals were associated with morning sleepiness. CONCLUSION Disrupted sleep and sleepiness appears to favor unhealthy food patterns and may place children with ADHD at increased risk for obesity.
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Affiliation(s)
- Karen Spruyt
- Department of Pediatrics and Comer Children’s Hospital, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Danielle L Raubuck
- Institute for Juvenile Research, Hyperactivity and Learning Problems Clinic, University of Illinois at Chicago, Chicago, IL
| | - Katie Grogan
- Institute for Juvenile Research, Hyperactivity and Learning Problems Clinic, University of Illinois at Chicago, Chicago, IL
| | - David Gozal
- Department of Pediatrics and Comer Children’s Hospital, Pritzker School of Medicine, University of Chicago, Chicago, IL
| | - Mark A Stein
- Institute for Juvenile Research, Hyperactivity and Learning Problems Clinic, University of Illinois at Chicago, Chicago, IL
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23
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Hartmann AS, Rief W, Hilbert A. Laboratory snack food intake, negative mood, and impulsivity in youth with ADHD symptoms and episodes of loss of control eating. Where is the missing link? Appetite 2012; 58:672-8. [PMID: 22251461 DOI: 10.1016/j.appet.2012.01.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 12/24/2011] [Accepted: 01/03/2012] [Indexed: 11/16/2022]
Abstract
To compare laboratory food intake, negative mood and trait impulsivity and their association with attention deficit hyperactivity disorder (ADHD) and loss of control (LOC) eating in youth (middle childhood to early adolescence). Ninety 10-14 year old youths with symptoms of ADHD, symptoms of LOC eating, and control participants took part in a laboratory snack food meal after having rated trait impulsivity. Negative mood was self-reported pre and post snack food meal, while representativeness of eating behavior and liking of the food was assessed post laboratory snack food meal. The ADHD group consumed more snack food than the other groups. Food intake was not influenced by negative mood or trait impulsivity. All groups exhibited a decrease in negative mood from pre to post food intake that was not accounted for by level of hunger or liking of the food. The greater food intake of the ADHD group compared to the other groups may contribute to the development of overweight and therefore be in accordance with the high co-morbidity reported between ADHD and obesity in youth. The influence of impulsivity and negative mood on food intake could not be shown, which corroborates a recent review on the association of negative mood and bingeing in adults but needs further assessment, particularly in the younger age groups.
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24
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Examining the relationship between attention-deficit/hyperactivity disorder and overweight in children and adolescents. Eur Child Adolesc Psychiatry 2012; 21:39-49. [PMID: 22120761 DOI: 10.1007/s00787-011-0230-0] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 11/11/2011] [Indexed: 10/15/2022]
Abstract
Although a higher prevalence of overweight/obesity was reported in clinical samples of patients with Attention-Deficit/Hyperactivity Disorder (ADHD), an association between overweight and ADHD has yet not been established in the general population in childhood. As both disorders are common and significantly affect psychosocial functioning, we investigated the prevalence of ADHD in overweight/obese youth and vice versa. In a cross-sectional nationally representative and community based survey 2,863 parents and their children aged 11-17 years rated symptoms on the Diagnostic and Statistical Manual of Mental Disorders-based German ADHD Rating scale. Weight and height were assessed by professionals. Body mass index was categorized according to national age and sex specific reference values. Overall, 4.2% of the respondents met criteria for ADHD. The prevalence of ADHD was significantly higher for overweight/obese (7%) than for normal weight (3.5%) and underweight (4.9%) children. In a logistic regression analysis controlling for age, gender, and socio-economic status, overweight/obese children were twice as likely to have an ADHD diagnosis (OR = 2.0). Vice versa, adjusting for all covariates, children with ADHD had an OR of 1.9 for overweight/obesity status. For all weight-status groups, children with ADHD more frequently reported eating problems as compared to their non-clinical counterparts. Overweight/obese respondents with ADHD displayed the highest level of health services utilization. A clinician should be aware of the significant risk for a child with ADHD to become overweight and for an overweight child to have ADHD. Longitudinal studies are needed to better understand the mechanisms underlying the association between ADHD and overweight/obesity.
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25
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Abstract
Although quite overlooked, increasing evidence points to a significant association between attention-deficit/hyperactivity disorder (ADHD) and obesity. Here, we present an updated systematic review and a critical discussion of studies on the relationship between ADHD and obesity, with a particular emphasis on the possible behavioral, neurobiological, and genetics underlying mechanisms. Available empirically based studies indicate that the prevalence of ADHD in clinical samples of patients seeking treatment for their obesity is higher than that in the general population. Moreover, although still limited, current evidence shows that individuals with ADHD have higher-than-average body mass index z-scores and/or significantly higher obesity rates compared with subjects without ADHD. Three mechanisms underlying the association between ADHD and obesity have been proposed: (1) obesity and/or factors associated with it (such as sleep-disordered breathing and deficits in arousal/alertness) manifest as ADHD-like symptoms; (2) ADHD and obesity share common genetics and neurobiological dysfunctions, involving the dopaminergic and, possibly, other systems (e.g., brain-derived neurotropic factor, melanocortin-4-receptor); and (3) impulsivity and inattention of ADHD contribute to weight gain via dysregulated eating patterns. With regards to the possible clinical implications, we suggest that it is noteworthy to screen for ADHD in patients with obesity and to look for abnormal eating behaviors as possible contributing factors of obesity in patients with ADHD. If further studies confirm a causal relationship between ADHD and obesity, appropriate treatment of ADHD may improve eating patterns and, as a consequence, weight status of individuals with both obesity and ADHD.
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Affiliation(s)
- Samuele Cortese
- Institute for Pediatric Neuroscience, New York University Child Study Center, New York, NY, USA,
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27
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Abstract
Family relations may constitute a risk for developing eating problems. Not enough is known about parent-child relationship quality and upbringing in food situations. Self-report data from 80 high school students (45 males) showed that females had more eating problems than males, and their problems were related both to insecure mother attachment, controlling for body/weight dissatisfaction, and to more memories of childhood food rules. Secure mother attachment was related to decreased eating problems, via increasing body/weight satisfaction. Especially the mother- daughter relationship seems to affect adolescent girls' eating habits and can either protect against or enhance the risk for eating problems.
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Affiliation(s)
- Emma A Bäck
- Department of Psychology, Stockholm University, Stockholm, Sweden.
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COMT Val158Met variant and functional haplotypes associated with childhood ADHD history in women with bulimia nervosa. Prog Neuropsychopharmacol Biol Psychiatry 2011; 35:948-52. [PMID: 21300128 DOI: 10.1016/j.pnpbp.2011.01.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 01/12/2011] [Accepted: 01/13/2011] [Indexed: 11/21/2022]
Abstract
Up to one third of patients with bulimia nervosa (BN) report a history of ADHD symptoms, and both disorders may also be associated with dopaminergic abnormalities. COMT gene, coding for an enzyme responsible for the degradation of dopamine, may play a part in the etiology of ADHD and BN. This study aimed to (1) examine if certain variants of the COMT genetic markers (rs6269, rs4633, rs4818 and rs4680) are more common in BN versus controls; (2) assess transmission of COMT alleles in BN families; and (3) explore the role of COMT genotypes and haplotypes in bulimic women with childhood ADHD history. 72 BN probands and unaffected relatives were genotyped for COMT rs4680 (Val158Met) and three adjacent markers. The remaining 165 probands were matched with nonpsychiatric controls. We also investigated if COMT variants and haplotypes were associated with childhood ADHD history in a subgroup of 86 BN probands who completed the Wender Utah Rating Scale (WURS). Our results showed that cases and controls did not differ in COMT allele and haplotype frequencies. In contrast, specific alleles of all four COMT markers and the medium-activity haplotype were preferentially transmitted to the offspring with BN. COMT Val158 allele was overrepresented and the medium-activity haplotype was underrepresented in BN with childhood ADHD history (p=0.010). These findings suggest a possible role for COMT variants and related haplotypes in BN and its subphenotypes. If replicated, these preliminary findings may have implications for the prevention and treatment of BN that emerges in the context of childhood ADHD.
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de Zwaan M, Gruss B, Müller A, Philipsen A, Graap H, Martin A, Glaesmer H, Hilbert A. Association between obesity and adult attention-deficit/hyperactivity disorder in a German community-based sample. Obes Facts 2011; 4:204-11. [PMID: 21701236 PMCID: PMC6444500 DOI: 10.1159/000329565] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
OBJECTIVE The goal of the present study was to examine the association between attention-deficit/hyperactivity disorder (ADHD) and obesity in a representative community based sample of the German population. METHOD Participants were 1,633 German residents (53.6% female) aged 18-64 years. A retrospective assessment of childhood ADHD and a self-report assessment of adult ADHD were administered for diagnosis of adult ADHD. In addition, binge eating and purging behaviors as well as depression and anxiety were assessed using self-rating instruments. RESULTS The estimated prevalence of ADHD in obese participants was 9.7% compared to 3.8% in overweight and 4.3% in under-/normal-weight participants. The prevalence of obesity was 22.1% among adults with ADHD and 10.2% among persons without ADHD. Adult ADHD was significantly associated with a greater likelihood of being obese but not overweight even after adjusting for sociodemographic characteristics. Results were similar when adjusting for depression and anxiety symptoms and for purging behaviors. Odds ratios decreased after adjusting for binge eating; however, the results were still significant which shows that the relationship between obesity and ADHD in adulthood is not fully explained by binge eating. CONCLUSION Overall, the results indicate that adult ADHD is associated with obesity in a community-based sample of the adult German population.
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Affiliation(s)
- Martina de Zwaan
- Department of Psychosomatic Medicine and Psychotherapy, University of Erlangen-Nuremberg, Germany.
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Cortese S, Morcillo Peñalver C. Comorbidity between ADHD and obesity: exploring shared mechanisms and clinical implications. Postgrad Med 2010; 122:88-96. [PMID: 20861592 DOI: 10.3810/pgm.2010.09.2205] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Recent studies suggest an association between attention-deficit/hyperactivity disorder (ADHD) and obesity. In this article, we systematically review and critically discuss evidence on the prevalence of ADHD in obese patients as well as the weight status of individuals with ADHD. Relevant articles were searched in PubMed, PsychInfo, and ISI Web of Science (January 1980 to June 2010). We found that current evidence indicates a high prevalence of ADHD in clinical samples of patients seeking treatment for their obesity. Moreover, available studies show that individuals with ADHD have higher-than-average body mass index z scores and/or a significantly higher prevalence of obesity compared with subjects without ADHD. Three mechanisms underlying the association between ADHD and obesity have been proposed: 1) it is possible that obesity and/or factors associated with it (such as sleep-disordered breathing) manifest as ADHD-like symptoms; 2) ADHD and obesity share common biological dysfunctions; and 3) ADHD contributes to obesity. With regards to the possible clinical implications, our findings suggest that it is noteworthy to screen for ADHD in patients with obesity and to look for abnormal eating behaviors as possible contributing factors of obesity in patients with ADHD. Based on preliminary findings, appropriate treatment of ADHD may improve the weight status of individuals with both obesity and ADHD.
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Affiliation(s)
- Samuele Cortese
- Department of Psychiatry, Child and Adolescent Psychiatry Unit, University Hospital Clocheville, 34, Rue Jules Charpentier, 37000 Tours, France.
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Abstract
In the past decade, we have become increasingly aware of strong associations between overweight/obesity and symptoms of attention-deficit/hyperactivity disorder (ADHD) in children, adolescents, and adults. This review addresses the prevalence of the comorbidity and discusses some of the mechanisms that could account for their relationship. It is suggested that the inattentive and impulsive behaviors that characterize ADHD could contribute to overeating in our current food environment, with its emphasis on fast food consumption and its many food temptations. It is also proposed-based on the compelling evidence that foods high in fat, sugar, and salt are as addictive as some drugs of abuse-that excessive food consumption could be a form of self-medication. This view conforms with the well-established evidence that drug use and abuse are substantially higher among those with ADHD than among the general population.
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Abstract
Our dramatically changed food environment--since periods in our history when food sources were highly constrained--has presented new challenges for obesity research. For example, these alterations have strongly emphasized the physiological differences between the homeostatic and the hedonic regulation of food intake--the latter being largely responsible for the pronounced increase in obesity in the past few decades. There is also increasing agreement that compulsive overeating shares many parallels with addiction disorders such as drug abuse. These factors have also fostered a renewed interest in identifying individual differences in personality and motivational systems that increase the risk for overeating and weight gain in our population. Reward sensitivity has been the focus of a recent body of compelling research, with evidence favoring two seemingly opposite points of view. On the one hand, studies have found support for a link between low reward sensitivity and obesity, whereas other evidence suggests that a strong appetitive motivation leads to overeating and weight gain. Arguments are provided to reconcile these apparently disparate theories. Finally, the role of impulsivity and its links with symptoms of attention deficit/hyperactivity disorder are discussed, as well as their respective roles in the risk profile for obesity.
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Banaschewski T, Becker K, Scherag S, Franke B, Coghill D. Molecular genetics of attention-deficit/hyperactivity disorder: an overview. Eur Child Adolesc Psychiatry 2010; 19:237-57. [PMID: 20145962 PMCID: PMC2839490 DOI: 10.1007/s00787-010-0090-z] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Accepted: 01/07/2010] [Indexed: 12/15/2022]
Abstract
As heritability is high in attention-deficit/hyperactivity disorder (ADHD), genetic factors must play a significant role in the development and course of this disorder. In recent years a large number of studies on different candidate genes for ADHD have been published, most have focused on genes involved in the dopaminergic neurotransmission system, such as DRD4, DRD5, DAT1/SLC6A3, DBH, DDC. Genes associated with the noradrenergic (such as NET1/SLC6A2, ADRA2A, ADRA2C) and serotonergic systems (such as 5-HTT/SLC6A4, HTR1B, HTR2A, TPH2) have also received considerable interest. Additional candidate genes related to neurotransmission and neuronal plasticity that have been studied less intensively include SNAP25, CHRNA4, NMDA, BDNF, NGF, NTF3, NTF4/5, GDNF. This review article provides an overview of these candidate gene studies, and summarizes findings from recently published genome-wide association studies (GWAS). GWAS is a relatively new tool that enables the identification of new ADHD genes in a hypothesis-free manner. Although these latter studies could be improved and need to be replicated they are starting to implicate processes like neuronal migration and cell adhesion and cell division as potentially important in the aetiology of ADHD and have suggested several new directions for future ADHD genetics studies.
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Affiliation(s)
- Tobias Banaschewski
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Mannheim, Germany.
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Heidbreder CA, Newman AH. Current perspectives on selective dopamine D(3) receptor antagonists as pharmacotherapeutics for addictions and related disorders. Ann N Y Acad Sci 2010; 1187:4-34. [PMID: 20201845 PMCID: PMC3148950 DOI: 10.1111/j.1749-6632.2009.05149.x] [Citation(s) in RCA: 233] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Repeated exposure to drugs of abuse produces long-term molecular and neurochemical changes that may explain the core features of addiction, such as the compulsive seeking and taking of the drug, as well as the risk of relapse. A growing number of new molecular and cellular targets of addictive drugs have been identified, and rapid advances are being made in relating those targets to specific behavioral phenotypes in animal models of addiction. In this context, the pattern of expression of the dopamine (DA) D(3) receptor in the rodent and human brain and changes in this pattern in response to drugs of abuse have contributed primarily to direct research efforts toward the development of selective DA D(3) receptor antagonists. Growing preclinical evidence indicates that these compounds may actually regulate the motivation to self-administer drugs and disrupt drug-associated cue-induced craving. This report will be divided into three parts. First, preclinical evidence in support of the efficacy of selective DA D(3) receptor antagonists in animal models of drug addiction will be reviewed. The effects of mixed DA D(2)/D(3) receptor antagonists will not be discussed here because most of these compounds have low selectivity at the D(3) versus D(2) receptor, and their efficacy profile is related primarily to functional antagonism at D(2) receptors and possibly interactions with other neurotransmitter systems. Second, major advances in medicinal chemistry for the identification and optimization of selective DA D(3) receptor antagonists and partial agonists will be analyzed. Third, translational research from preclinical efficacy studies to so-called proof-of-concept studies for drug addiction indications will be discussed.
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Affiliation(s)
- Christian A Heidbreder
- Reckitt Benckiser Pharmaceuticals, Global Research & Development, Richmond, Virginia 23235, USA.
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Wilcox CE, Braskie MN, Kluth JT, Jagust WJ. Overeating Behavior and Striatal Dopamine with 6-[F]-Fluoro-L-m-Tyrosine PET. J Obes 2010; 2010:909348. [PMID: 20798859 PMCID: PMC2925447 DOI: 10.1155/2010/909348] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Accepted: 02/23/2010] [Indexed: 11/29/2022] Open
Abstract
Eating behavior may be affected by dopamine synthesis capacity. In this study, 6-[(18)F]-fluoro-L-m-tyrosine (FMT) positron emission tomography (PET) uptake in striatal subregions was correlated with BMI (kg/m(2)) and an estimate of the frequency of prior weight loss attempts in 15 healthy subjects. BMI was negatively correlated with FMT uptake in the dorsal caudate. Although the association between BMI and FMT uptake in the dorsal caudate was not significant upon correction for age and sex, the association fell within the range of a statistical trend. Weight loss attempts divided by years trying was also negatively correlated with FMT uptake in the dorsal putamen (P = .05). These results suggest an association between low dorsal striatal presynaptic dopamine synthesis capacity and overeating behavior.
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Affiliation(s)
- Claire E. Wilcox
- Department of Psychiatry, University of California at San Francisco, 401 Parnassus Avenue, San Francisco, CA 94143, USA
- Helen Wills Neuroscience Institute, MC #3190, University of California at Berkeley, 132 Barker Hall, Berkeley, CA 94720-3192, USA
- Department of Psychiatry, School of Medicine, University of New Mexico, MSC09 5030, Albuquerque, NM 87131, USA
- *Claire E. Wilcox:
| | - Meredith N. Braskie
- Helen Wills Neuroscience Institute, MC #3190, University of California at Berkeley, 132 Barker Hall, Berkeley, CA 94720-3192, USA
| | - Jennifer T. Kluth
- Helen Wills Neuroscience Institute, MC #3190, University of California at Berkeley, 132 Barker Hall, Berkeley, CA 94720-3192, USA
| | - William J. Jagust
- Helen Wills Neuroscience Institute, MC #3190, University of California at Berkeley, 132 Barker Hall, Berkeley, CA 94720-3192, USA
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