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Keel PK, Eckel LA, Hildebrandt BA, Haedt-Matt AA, Murry DJ, Appelbaum J, Jimerson DC. Disentangling the links between gastric emptying and binge eating v. purging in eating disorders using a case-control design. Psychol Med 2023; 53:1947-1954. [PMID: 37310328 PMCID: PMC10106287 DOI: 10.1017/s0033291721003640] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/11/2021] [Accepted: 08/18/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Prior work supports delayed gastric emptying in anorexia nervosa and bulimia nervosa (BN) but not binge-eating disorder, suggesting that neither low body weight nor binge eating fully accounts for slowed gastric motility. Specifying a link between delayed gastric emptying and self-induced vomiting could offer new insights into the pathophysiology of purging disorder (PD). METHODS Women (N = 95) recruited from the community meeting criteria for DSM-5 BN who purged (n = 26), BN with nonpurging compensatory behaviors (n = 18), PD (n = 25), or healthy control women (n = 26) completed assessments of gastric emptying, gut peptides, and subjective responses over the course of a standardized test meal under two conditions administered in a double-blind, crossover sequence: placebo and 10 mg of metoclopramide. RESULTS Delayed gastric emptying was associated with purging with no main or moderating effects of binge eating in the placebo condition. Medication eliminated group differences in gastric emptying but did not alter group differences in reported gastrointestinal distress. Exploratory analyses revealed that medication caused increased postprandial PYY release, which predicted elevated gastrointestinal distress. CONCLUSIONS Delayed gastric emptying demonstrates a specific association with purging behaviors. However, correcting disruptions in gastric emptying may exacerbate disruptions in gut peptide responses specifically linked to the presence of purging after normal amounts of food.
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Affiliation(s)
- Pamela K. Keel
- Department of Psychology, Florida State University, Tallahassee, FL, USA
| | - Lisa A. Eckel
- Department of Psychology and Neuroscience Program, Florida State University, Tallahassee, FL, USA
| | - Britny A. Hildebrandt
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | | | - Daryl J. Murry
- College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | | | - David C. Jimerson
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA, USA
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2
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Martín J, Anton-Ladislao A, Padierna Á, Berjano B, Quintana JM. Classification of subtypes of patients with eating disorders by correspondence analysis. World J Psychiatry 2021; 11:375-387. [PMID: 34327130 PMCID: PMC8311511 DOI: 10.5498/wjp.v11.i7.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/09/2021] [Accepted: 06/16/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Grouping eating disorders (ED) patients into subtypes could help improve the establishment of more effective diagnostic and treatment strategies.
AIM To identify clinically meaningful subgroups among subjects with ED using multiple correspondence analysis (MCA).
METHODS A prospective cohort study was conducted of all outpatients diagnosed for an ED at an Eating Disorders Outpatient Clinic to characterize groups of patients with ED into subtypes according to sociodemographic and psychosocial impairment data, and to validate the results using several illustrative variables. In all, 176 (72.13%) patients completed five questionnaires (clinical impairment assessment, eating attitudes test-12, ED-short form health-related quality of life, metacognitions questionnaire, Penn State Worry Questionnaire) and sociodemographic data. ED patient groups were defined using MCA and cluster analysis. Results were validated using key outcomes of subtypes of ED.
RESULTS Four ED subgroups were identified based on the sociodemographic and psychosocial impairment data.
CONCLUSION ED patients were differentiated into well-defined outcome groups according to specific clusters of compensating behaviours.
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Affiliation(s)
- Josune Martín
- Department of Research, Galdakao-Usansolo Hospital, Galdakao 48960, Spain
- Kronikgune Institute for Health Services Research, Barakaldo 48902, Spain
- Health Services Research on Chronic Diseases Network – REDISSEC, Galdakao 48960, Spain
| | - Ane Anton-Ladislao
- Department of Research, Galdakao-Usansolo Hospital, Galdakao 48960, Spain
| | - Ángel Padierna
- Health Services Research on Chronic Diseases Network – REDISSEC, Galdakao 48960, Spain
- Department of Psychiatry, Galdakao-Usansolo Hospital, Galdakao 48960, Spain
| | - Belén Berjano
- Department of Psychiatry, Galdakao-Usansolo Hospital, Galdakao 48960, Spain
| | - José María Quintana
- Department of Research, Galdakao-Usansolo Hospital, Galdakao 48960, Spain
- Health Services Research on Chronic Diseases Network – REDISSEC, Galdakao 48960, Spain
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3
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Dakanalis A, Colmegna F, Zanetti MA, Di Giacomo E, Riva G, Clerici M. Evaluation of the DSM-5 Severity Specifier for Bulimia Nervosa in Treatment-Seeking Youth. Child Psychiatry Hum Dev 2018; 49:137-145. [PMID: 28510006 DOI: 10.1007/s10578-017-0735-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A new severity specifier for bulimia nervosa (BN), based on the frequency of inappropriate weight compensatory behaviours (e.g., laxative misuse, self-induced vomiting, fasting, diuretic misuse, and excessive exercise), has been added to the most recent (fifth) edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) as a means of addressing variability and heterogeneity in the severity of the disorder. While existing research provides support for the DSM-5 severity specifier for BN in adult patients, evidence for its validity and clinical utility in youth is currently lacking. To address this gap, data from 272 treatment-seeking adolescents with DSM-5 BN (94.2% female, M age = 15.3 years, SD 1.7) were analysed to examine whether these patients, sub-grouped based on the DSM-5 severity definitions, would show meaningful differences in a broad range of clinical variables and demographic and physical characteristics. Analyses revealed that participants categorized with mild, moderate, severe, and extreme severity of BN significantly differed from each other in 15 variables regarding eating disorder pathological features and putative maintenance factors (i.e., core low self-esteem, perfectionism, social appearance anxiety, body surveillance, and mood intolerance), health-related quality of life and comorbid psychiatric (i.e., affective and anxiety) disorders (large effect sizes). Between-group differences in demographics, body mass index, or age-of-BN onset were not observed. Collectively, our findings provide support for the utility of the frequency of inappropriate weight compensatory behaviours as a severity indicator for BN and suggest that age-at-onset of BN is probably more disorder- than severity-dependent. Implications for future research are outlined.
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Affiliation(s)
- Antonios Dakanalis
- Department of Medicine and Surgery, University of Milano Bicocca, Via Cadore 48, 20900, Monza, Italy. .,Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy.
| | | | | | - Ester Di Giacomo
- Department of Medicine and Surgery, University of Milano Bicocca, Via Cadore 48, 20900, Monza, Italy
| | - Giuseppe Riva
- Applied Technology for Neuro-Psychology Laboratory, Istituto Auxologico Italiano, Milan, Italy.,Department of Psychology, Catholic University, Milan, Italy
| | - Massimo Clerici
- Department of Medicine and Surgery, University of Milano Bicocca, Via Cadore 48, 20900, Monza, Italy.,Department of Mental Health, San Gerardo Hospital, Monza, Italy
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4
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Forbush KT, Wildes JE. Application of structural equation mixture modeling to characterize the latent structure of eating pathology. Int J Eat Disord 2017; 50:542-550. [PMID: 27862148 DOI: 10.1002/eat.22634] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 09/06/2016] [Accepted: 09/08/2016] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Several theoretical models describe the structure of eating disorders (EDs), and a burgeoning empirical literature has sought to identify whether eating pathology is conceptualized best as categorical (presence or absence of disorder), dimensional (continuous), or a hybrid of categories and dimensions. METHODS This study used structural equation mixture modeling (SEMM) to identify the latent structure of EDs. Items from the Eating Pathology Symptoms Inventory (EPSI) were administered to individuals with EDs (N = 344). Select EPSI scales and body mass index were indicators in subsequent SEMM analyses. The Inventory of Depression and Anxiety Symptoms (IDAS), ED diagnoses, and select demographic variables were used as validators using chi-square or MANOVA. RESULTS Categorical models fit the data better than latent dimensional or hybrid models. Latent profile 1 (LP1) was non-fat-phobic restricting anorexia nervosa; LP2, an obese, binge-eating class; LP3, non-purging bulimia nervosa; LP4, fat-phobic restricting anorexia nervosa; and LP5, multiple purging bulimia nervosa. External validation analyses indicated that LP4 and LP5 had the highest non-ED-related psychopathology. DISCUSSION These findings indicate that there is substantial variability in the phenomenology of traditional DSM-based ED categories across latent profiles, and highlight the salience of certain ED phenotypes that have been debated in the literature. © 2016 Wiley Periodicals, Inc.(Int J Eat Disord 2017; 50:542-550).
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Affiliation(s)
| | - Jennifer E Wildes
- Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, Chicago, Illinois
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5
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Testing the DSM-5 severity indicator for bulimia nervosa in a treatment-seeking sample. Eat Weight Disord 2017; 22:161-167. [PMID: 27650858 DOI: 10.1007/s40519-016-0324-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 09/12/2016] [Indexed: 10/21/2022] Open
Abstract
PURPOSE This study tested the new DSM-5 severity criterion for bulimia nervosa (BN) based on the frequency of inappropriate weight compensatory behaviors in a treatment-seeking sample. METHODS Participants were 345 adults with DSM-5 BN presenting for treatment. They were sub-grouped based on DSM-5 severity levels and compared on a range of variables of clinical interest and demographics. RESULTS Based on DSM-5 severity definitions, 27.2 % of the sample was categorized with mild, 26.1 % with moderate, 24.9 % with severe, and 21.8 % with extreme severity of BN. Analyses revealed that the four (mild, moderate, severe, and extreme) severity groups of BN significantly differed from each other in eating disordered and body-related attitudes and behaviors, factors involved in the maintenance process of the disorder, comorbid psychiatric disorders, psychological distress, and psychosocial impairment (medium-to-large effect sizes). No significant between-group differences were observed in demographics, body mass index, or at the age when BN first occurred, lending some credence to recent suggestions that age-at-onset of BN may be more a disorder- than a severity-dependent variable. CONCLUSIONS Collectively, our findings provide support for the severity indicator for BN introduced in the DSM-5 as a means of addressing heterogeneity and variability in the severity of the disorder.
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Abstract
Twenty years have passed from the International Classification of Diseases, Tenth Revision (ICD-10) to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) and, in the meanwhile, a lot of research data about eating disorders has been published. This article reviews the main modifications to the classification of eating disorders reported in the "Feeding and Eating Disorders" chapter of the DSM-5, and compares them with the ICD-10 diagnostic guidelines. Particularly, we will show that DSM-5 criteria widened the diagnoses of anorexia and bulimia nervosa to less severe forms (so decreasing the frequency of Eating Disorders, Not Otherwise Specified (EDNOS) diagnoses), introduced the new category of Binge Eating Disorder, and incorporated several feeding disorders that were first diagnosed in infancy, childhood, or adolescence. On the whole, the DSM-5 revision should allow the clinician to make more reliable and timely diagnoses for eating disorders.
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7
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Dakanalis A, Carrà G, Calogero R, Zanetti MA, Gaudio S, Caccialanza R, Riva G, Clerici M. Testing the cognitive-behavioural maintenance models across DSM-5 bulimic-type eating disorder diagnostic groups: a multi-centre study. Eur Arch Psychiatry Clin Neurosci 2015; 265:663-76. [PMID: 25416408 DOI: 10.1007/s00406-014-0560-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 11/07/2014] [Indexed: 12/23/2022]
Abstract
The original cognitive-behavioural (CB) model of bulimia nervosa, which provided the basis for the widely used CB therapy, proposed that specific dysfunctional cognitions and behaviours maintain the disorder. However, amongst treatment completers, only 40-50 % have a full and lasting response. The enhanced CB model (CB-E), upon which the enhanced version of the CB treatment was based, extended the original approach by including four additional maintenance factors. This study evaluated and compared both CB models in a large clinical treatment seeking sample (N = 679), applying both DSM-IV and DSM-5 criteria for bulimic-type eating disorders. Application of the DSM-5 criteria reduced the number of cases of DSM-IV bulimic-type eating disorders not otherwise specified to 29.6 %. Structural equation modelling analysis indicated that (a) although both models provided a good fit to the data, the CB-E model accounted for a greater proportion of variance in eating-disordered behaviours than the original one, (b) interpersonal problems, clinical perfectionism and low self-esteem were indirectly associated with dietary restraint through over-evaluation of shape and weight, (c) interpersonal problems and mood intolerance were directly linked to binge eating, whereas restraint only indirectly affected binge eating through mood intolerance, suggesting that factors other than restraint may play a more critical role in the maintenance of binge eating. In terms of strength of the associations, differences across DSM-5 bulimic-type eating disorder diagnostic groups were not observed. The results are discussed with reference to theory and research, including neurobiological findings and recent hypotheses.
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Affiliation(s)
- Antonios Dakanalis
- Department of Brain and Behavioral Sciences, University of Pavia, P.za Botta 11, 27100, Pavia, Italy.
| | - Giuseppe Carrà
- Division of Psychiatry, Faculty of Brain Sciences, University College of London, Gower Street, London, WC1E 6BT, UK
| | - Rachel Calogero
- School of Psychology, University of Kent, Canterbury, Kent, CT2 7NZ, UK
| | - Maria Assunta Zanetti
- Department of Brain and Behavioral Sciences, University of Pavia, P.za Botta 11, 27100, Pavia, Italy
| | - Santino Gaudio
- Centre for Integrated Research, Area of Diagnostic Imaging, University "Campus Bio-Medico di Roma", Via Pietro Tacchini 24, 00197, Rome, Italy
| | - Riccardo Caccialanza
- Nutrition and Dietetics Service, Fondazione IRCCS Policlinico San Matteo, Viale Golgi 19, 27100, Pavia, Italy
| | - Giuseppe Riva
- Department of Psychology, Catholic University, Largo Gemelli 1, 20123, Milan, Italy.,Applied Technology for Neuro-Psychology Laboratory, Istituto Auxologico Italiano, IRCCS, Via Ariosto 13, 20145, Milan, Italy
| | - Massimo Clerici
- Department of Neurosciences and Biomedical Technologies, University of Milano-Bicocca, Medical School, Via Cadore, 48, 20052, Monza, Italy
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8
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Macpherson-Sánchez AE. Integrating fundamental concepts of obesity and eating disorders: implications for the obesity epidemic. Am J Public Health 2015; 105:e71-85. [PMID: 25713933 PMCID: PMC4358173 DOI: 10.2105/ajph.2014.302507] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2014] [Indexed: 12/12/2022]
Abstract
Physiological mechanisms promote weight gain after famine. Because eating disorders, obesity, and dieting limit food intake, they are famine-like experiences. The development of the concept of meeting an ideal weight was the beginning of increasing obesity. Weight stigma, the perception of being fat, lack of understanding of normal growth and development, and increased concern about obesity on the part of health providers, parents, and caregivers have reinforced each other to promote dieting. Because weight suppression and disinhibition provoke long-term weight increase, dieting is a major factor producing the obesity epidemic. The integrated eating disorder-obesity theory included in this article emphasizes that, contrary to dieters, lifetime weight maintainers depend on physiological processes to control weight and experience minimal weight change.
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Affiliation(s)
- Ann E Macpherson-Sánchez
- Ann E. Macpherson-Sánchez is with the Department of Agricultural Education, University of Puerto Rico, Mayagüez
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9
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Hilbert A, Pike KM, Goldschmidt AB, Wilfley DE, Fairburn CG, Dohm FA, Walsh BT, Striegel Weissman R. Risk factors across the eating disorders. Psychiatry Res 2014; 220:500-6. [PMID: 25103674 PMCID: PMC4785871 DOI: 10.1016/j.psychres.2014.05.054] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 02/21/2014] [Accepted: 05/28/2014] [Indexed: 11/23/2022]
Abstract
This study sought to examine risk and onset patterns in anorexia nervosa (AN), bulimia nervosa (BN), and binge eating disorder (BED). Women with AN (n=71), BN (n=66), BED (n=160) and non-psychiatric controls (n=323) were compared retrospectively on risk factors, symptom onset, and diagnostic migration. Eating disorder groups reported greater risk exposure than non-psychiatric controls. AN and BED differed on premorbid personality/behavioral problems, childhood obesity, and family overeating. Risk factors for BN were shared with AN and BED. Dieting was the most common onset symptom in AN, whereas binge eating was most common in BN and BED. Migration between AN and BED was rare, but more frequent between AN and BN and between BN and BED. AN and BED have distinct risk factors and onset patterns, while BN shares similar risk factors and onset patterns with both AN and BED. Results should inform future classification schemes and prevention programs.
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Affiliation(s)
- Anja Hilbert
- Integrated Research and Treatment Center AdiposityDiseases, Department of Medical Psychology and Medical Sociology, University of Leipzig Medical Center, Philipp-Rosenthal-Strasse 27, 04103 Leipzig, Germany.
| | - Kathleen M Pike
- Department of Psychiatry, Columbia University, New York, NY, USA
| | - Andrea B Goldschmidt
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago, IL, USA
| | - Denise E Wilfley
- Department of Psychiatry, Washington University in St. Louis, St. Louis, MO, USA
| | | | - Faith-Anne Dohm
- Graduate School of Education & Allied Professions, Fairfield University, Fairfield, CT, USA
| | - B Timothy Walsh
- Department of Psychiatry, Columbia University, New York, NY, USA
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10
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Knoll S, Föcker M, Hebebrand J. [Changes to the classification of Eating Disorders in DSM-5]. ZEITSCHRIFT FUR KINDER-UND JUGENDPSYCHIATRIE UND PSYCHOTHERAPIE 2014; 42:361-6; quiz 367-8. [PMID: 25163998 DOI: 10.1024/1422-4917/a000311] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The fifth revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) resulted in substantial changes with regard to the classification of Eating Disorders. In DSM-5, Feeding and Eating Disorders are for the first time subsumed in a single category. The Binge Eating Disorder (BED) was established as the third classical eating disorder in addition to Anorexia Nervosa (AN) and Bulimia Nervosa (BN). The criteria for AN changed remarkably, whereas there were only minor changes to the BN criteria. The criteria for BED differ only marginally from the DSM-IV research criteria. There are now subtypes of AN, BN, and BED in the new category "Other Specific Feeding and Eating Disorders." The rest category "Eating Disorders Not Otherwise Specified" has been renamed to "Unspecified Feeding or Eating Disorders." The practicability of the DSM-5 criteria for Eating Disorders, and for AN in particular, for both clinical practice and research remains to be seen.
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Affiliation(s)
- Susanne Knoll
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Essen
| | - Manuel Föcker
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Essen
| | - Johannes Hebebrand
- Klinik für Psychiatrie, Psychosomatik und Psychotherapie des Kindes- und Jugendalters, Essen
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11
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Jordan J, McIntosh VVW, Carter JD, Rowe S, Taylor K, Frampton CMA, McKenzie JM, Latner J, Joyce PR. Bulimia nervosa-nonpurging subtype: closer to the bulimia nervosa-purging subtype or to binge eating disorder? Int J Eat Disord 2014; 47:231-8. [PMID: 24282157 DOI: 10.1002/eat.22218] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 09/30/2013] [Accepted: 10/05/2013] [Indexed: 11/05/2022]
Abstract
OBJECTIVE DSM-5 has dropped subtyping of bulimia nervosa (BN), opting to continue inclusion of the somewhat contentious diagnosis of BN-nonpurging subtype (BN-NP) within a broad BN category. Some contend however that BN-NP is more like binge eating disorder (BED) than BN-P. This study examines clinical characteristics, eating disorder symptomatology, and Axis I comorbidity in BN-NP, BN-P, and BED groups to establish whether BN-NP more closely resembles BN-P or BED. METHOD Women with BN-P (n = 29), BN-NP (n = 29), and BED (n = 54) were assessed at baseline in an outpatient psychotherapy trial for those with binge eating. Measures included the Structured Clinical Interviews for DSM-IV, Eating Disorder Examination, and Eating Disorder Inventory-2. RESULTS The BN-NP subtype had BMIs between those with BN-P and BED. Both BN subtypes had higher Restraint and Drive for Thinness scores than BED. Body Dissatisfaction was highest in BN-NP and predicted BN-NP compared to BN-P. Higher Restraint and lower BMI predicted BN-NP relative to BED. BN-NP resembled BED with higher lifetime BMIs; and weight-loss clinic than eating disorder clinic attendances relative to the BN-P subtype. Psychiatric comorbidity was comparable except for higher lifetime cannabis use disorder in the BN-NP than BN-P subtype DISCUSSION These results suggest that BN-NP sits between BN-P and BED however the high distress driving inappropriate compensatory behaviors in BN-P requires specialist eating disorder treatment. These results support retaining the BN-NP group within the BN category. Further research is needed to determine whether there are meaningful differences in outcome over follow-up.
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Affiliation(s)
- Jennifer Jordan
- Department of Psychological Medicine, University of Otago, Christchurch, New Zealand; Canterbury District Health Board, Christchurch, New Zealand
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12
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Schaumberg K, Anderson LM, Reilly E, Anderson DA. Patterns of compensatory behaviors and disordered eating in college students. JOURNAL OF AMERICAN COLLEGE HEALTH : J OF ACH 2014; 62:526-533. [PMID: 24911417 DOI: 10.1080/07448481.2014.930468] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
UNLABELLED Abstract. OBJECTIVE The current study investigated rates of endorsement of eating-related compensatory behaviors within a college sample. PARTICIPANTS This sample included male and female students (N = 1,158). METHODS PARTICIPANTS completed the Eating Disorder Examination Questionnaire (EDE-Q). The study defined 3 groups of students: those who did not endorse purging behaviors, those who endorsed only exercise, and those who endorsed laxative use or vomiting. Rates of related eating disorder risk variables were compared across the 3 groups. RESULTS Almost half of college students reported utilizing exercise as a compensatory strategy over the past 28 days. Those reporting compensatory exercise did not differ from other community and college samples on EDE-Q subscales. CONCLUSIONS Findings suggest that college students report significant rates of compensatory exercise, and those who report exercise as their only compensatory behavior also report relatively low levels of eating disorder risk.
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Affiliation(s)
- Katherine Schaumberg
- a Department of Psychology, University at Albany, State University of New York , Albany , New York
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13
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Agüera Z, Riesco N, Jiménez-Murcia S, Islam MA, Granero R, Vicente E, Peñas-Lledó E, Arcelus J, Sánchez I, Menchon JM, Fernández-Aranda F. Cognitive behaviour therapy response and dropout rate across purging and nonpurging bulimia nervosa and binge eating disorder: DSM-5 implications. BMC Psychiatry 2013; 13:285. [PMID: 24200085 PMCID: PMC4226246 DOI: 10.1186/1471-244x-13-285] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 06/21/2013] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND With the imminent publication of the new edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), there has been a growing interest in the study of the boundaries across the three bulimic spectrum syndromes [bulimia nervosa-purging type (BN-P), bulimia nervosa-non purging type (BN-NP) and binge eating disorder (BED)]. Therefore, the aims of this study were to determine differences in treatment response and dropout rates following Cognitive Behavioural Therapy (CBT) across the three bulimic-spectrum syndromes. METHOD The sample comprised of 454 females (87 BED, 327 BN-P and 40 BN-NP) diagnosed according to DSM-IV-TR criteria who were treated with 22 weekly outpatient sessions of group CBT therapy. Patients were assessed before and after treatment using a food and binging/purging diary and some clinical questionnaires in the field of ED. "Full remission" was defined as total absence of binging and purging (laxatives and/or vomiting) behaviors and psychological improvement for at least 4 (consecutive). RESULTS Full remission rate was found to be significantly higher in BED (69.5%) than in both BN-P (p < 0.005) and BN-NP (p < 0.001), which presented no significant differences between them (30.9% and 35.5%). The rate of dropout from group CBT was also higher in BED (33.7%) than in BN-P (p < 0.001) and BN-NP (p < 0.05), which were similar (15.4% and 12.8%, respectively). CONCLUSIONS Results suggest that purging and non-purging BN have similar treatment response and dropping out rates, whereas BED appears as a separate diagnosis with better outcome for those who complete treatment. The results support the proposed new DSM-5 classification.
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Affiliation(s)
- Zaida Agüera
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Madrid, Spain,Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Nadine Riesco
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Susana Jiménez-Murcia
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Madrid, Spain,Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain,Department of Clinical Sciences, School of Medicine, University of Barcelona, Barcelona, Spain
| | - Mohammed Anisul Islam
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Madrid, Spain,Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Roser Granero
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Madrid, Spain,Departament de Psicobiologia i Metodologia, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Enrique Vicente
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Eva Peñas-Lledó
- CICAB Clinical Research Centre, Extremadura University Hospital and Medical School, Badajoz, Spain
| | - Jon Arcelus
- Leicester Eating Disorder Service, Brandon Mental Health Unit, Leicester General Hospital, Leicester, UK
| | - Isabel Sánchez
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain
| | - Jose Manuel Menchon
- Department of Psychiatry, University Hospital of Bellvitge-IDIBELL, Barcelona, Spain,Department of Clinical Sciences, School of Medicine, University of Barcelona, Barcelona, Spain,CIBER Salud Mental (CIBERSAM), Instituto Salud Carlos III, Barcelona, Spain
| | - Fernando Fernández-Aranda
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto Salud Carlos III, Madrid, Spain.
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Nussinovitch M, Kaminer K, Gur E. Normal atrial conduction in medically treated patients with bulimia nervosa. Int J Psychiatry Clin Pract 2013; 17:216-8. [PMID: 23971672 DOI: 10.3109/13651501.2012.687382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Bulimia nervosa (BN) patients are characterized by binge eating followed by compensatory behaviors. Ingestion of emetic substances, characteristic to some BN patients, has been reported to be associated with supraventricular arrhythmias. AIMS To evaluate atrial electrocardiographic markers for supraventricular arrhythmias in patients with BN. METHOD The cohort included 31 patients with BN and sex- and age-matched controls. Twelve-lead electrocardiography was conducted on all participants under strict standards. P wave length and P wave dispersion in each patient were computed from a randomly selected beat and an averaged beat constructed from 7-12 beats, included in a 10-s ECG. RESULTS No statistically significant differences were found between the groups for minimal, maximal, and average P wave duration and P wave dispersion, calculated either from a random beat or averaged beats. CONCLUSION BN patients who are medically monitored and treated, have normal P wave parameters and P wave dispersion, and therefore do not appear to have an increased risk for developing supraventricular arrhythmias. Future research should focus on evaluating the effect of acute ingestion of emetic drugs on resting ECG of BN patients, as well as using signal averaging techniques and prolonged ECG-Holter monitoring.
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Affiliation(s)
- Moshe Nussinovitch
- Department of Pediatrics C, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.
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15
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Al-Adawi S, Bax B, Bryant-Waugh R, Claudino AM, Hay P, Monteleone P, Norring C, Pike KM, Pilon DJ, Herscovici CR, Reed GM, Rydelius PA, Sharan P, Thiels C, Treasure J, Uher R. Revision of ICD – status update on feeding and eating disorders. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/21662630.2013.742971] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Mond JM. Classification of bulimic-type eating disorders: from DSM-IV to DSM-5. J Eat Disord 2013; 1:33. [PMID: 24999412 PMCID: PMC4081768 DOI: 10.1186/2050-2974-1-33] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Accepted: 06/28/2013] [Indexed: 12/12/2022] Open
Abstract
Proposed changes to the classification of bulimic-type eating disorders in the lead up to the publication of DSM-5 are reviewed. Several of the proposed changes, including according formal diagnostic status to binge eating disorder (BED), removing the separation of bulimia nervosa (BN) into purging and non-purging subtypes, and reducing the binge frequency threshold from twice per week to once per week for both BN and (BED), have considerable empirical evidence to support them and will likely have the effect of facilitating clinical practice, improving access to care, improving public and professional awareness and understanding of these disorders and stimulating the additional research needed to address at least some problematic issues. However, the omission of any reference to variants of BN characterized by subjective, but not objective, binge eating episodes, and to the undue influence of weight or shape on self-evaluation or similar cognitive criterion in relation to the diagnosis of BED, is regrettable, given their potential to inform clinical and research practice and given that there is considerable evidence to support specific reference to these distinctions. Other aspects of the proposed criteria, such as retention of behavioral indicators of impaired control associated with binge eating and the presence of marked distress regarding binge eating among the diagnostic for BED, appear anomalous in that there is little or no evidence to support their validity or clinical utility. It is hoped that these issues will be addressed in final phase of the DSM-5 development process.
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Affiliation(s)
- Jonathan M Mond
- Research School of Psychology, Australian National University, Canberra ACT 0200, Australia
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18
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Brooks SJ, Rask-Andersen M, Benedict C, Schiöth HB. A debate on current eating disorder diagnoses in light of neurobiological findings: is it time for a spectrum model? BMC Psychiatry 2012; 12:76. [PMID: 22770364 PMCID: PMC3475111 DOI: 10.1186/1471-244x-12-76] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 05/14/2012] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Sixty percent of eating disorders do not meet criteria for anorexia- or bulimia nervosa, as defined by the Diagnostic and Statistical Manual version 4 (DSM-IV). Instead they are diagnosed as 'eating disorders not otherwise specified' (EDNOS). Discrepancies between criteria and clinical reality currently hampering eating disorder diagnoses in the DSM-IV will be addressed by the forthcoming DSM-V. However, future diagnoses for eating disorders will rely on current advances in the fields of neuroimaging and genetics for classification of symptoms that will ultimately improve treatment. DISCUSSION Here we debate the classification issues, and discuss how brain imaging and genetic discoveries might be interwoven into a model of eating disorders to provide better classification and treatment. The debate concerns: a) current issues in the classification of eating disorders in the DSM-IV, b) changes proposed for DSM-V, c) neuroimaging eating disorder research and d) genetic eating disorder research. SUMMARY We outline a novel evidence-based 'impulse control' spectrum model of eating disorders. A model of eating disorders is proposed that will aid future diagnosis of symptoms, coinciding with contemporary suggestions by clinicians and the proposed changes due to be published in the DSM-V.
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Affiliation(s)
| | | | - Christian Benedict
- Department of Neuroscience, University of Uppsala, Box 593, Uppsala, Sweden
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19
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Abstract
Current classification of eating disorders is failing to classify most clinical presentations; ignores continuities between child, adolescent and adult manifestations; and requires frequent changes of diagnosis to accommodate the natural course of these disorders. The classification is divorced from clinical practice, and investigators of clinical trials have felt compelled to introduce unsystematic modifications. Classification of feeding and eating disorders in ICD-11 requires substantial changes to remediate the shortcomings. We review evidence on the developmental and cross-cultural differences and continuities, course and distinctive features of feeding and eating disorders. We make the following recommendations: a) feeding and eating disorders should be merged into a single grouping with categories applicable across age groups; b) the category of anorexia nervosa should be broadened through dropping the requirement for amenorrhoea, extending the weight criterion to any significant underweight, and extending the cognitive criterion to include developmentally and culturally relevant presentations; c) a severity qualifier "with dangerously low body weight" should distinguish the severe cases of anorexia nervosa that carry the riskiest prognosis; d) bulimia nervosa should be extended to include subjective binge eating; e) binge eating disorder should be included as a specific category defined by subjective or objective binge eating in the absence of regular compensatory behaviour; f) combined eating disorder should classify subjects who sequentially or concurrently fulfil criteria for both anorexia and bulimia nervosa; g) avoidant/restrictive food intake disorder should classify restricted food intake in children or adults that is not accompanied by body weight and shape related psychopathology; h) a uniform minimum duration criterion of four weeks should apply.
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20
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Sysko R, Roberto CA, Barnes RD, Grilo CM, Attia E, Walsh BT. Test-retest reliability of the proposed DSM-5 eating disorder diagnostic criteria. Psychiatry Res 2012; 196:302-8. [PMID: 22401974 PMCID: PMC3361586 DOI: 10.1016/j.psychres.2011.12.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 12/06/2011] [Accepted: 12/12/2011] [Indexed: 02/07/2023]
Abstract
The proposed DSM-5 classification scheme for eating disorders includes both major and minor changes to the existing DSM-IV diagnostic criteria. It is not known what effect these modifications will have on the ability to make reliable diagnoses. Two studies were conducted to evaluate the short-term test-retest reliability of the proposed DSM-5 eating disorder diagnoses: anorexia nervosa, bulimia nervosa, binge eating disorder, and feeding and eating conditions not elsewhere classified. Participants completed two independent telephone interviews with research assessors (n=70 Study 1; n=55 Study 2). Fair to substantial agreements (κ=0.80 and 0.54) were observed across eating disorder diagnoses in Study 1 and Study 2, respectively. Acceptable rates of agreement were identified for the individual eating disorder diagnoses, including DSM-5 anorexia nervosa (κ's of 0.81 to 0.97), bulimia nervosa (κ=0.84), binge eating disorder (κ's of 0.75 and 0.61), and feeding and eating disorders not elsewhere classified (κ's of 0.70 and 0.46). Further, improved short-term test-retest reliability was noted when using the DSM-5, in comparison to DSM-IV, criteria for binge eating disorder. Thus, these studies found that trained interviewers can reliably diagnose eating disorders using the proposed DSM-5 criteria; however, additional data from general practice settings and community samples are needed.
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Affiliation(s)
- Robyn Sysko
- New York State Psychiatric Institute, New York, NY, USA.
| | - Christina A. Roberto
- Division of Clinical Therapeutics, New York State Psychiatric Institute and the Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York, NY, USA,Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA,Department of Psychology, Yale University, New Haven, CT, USA,School of Epidemiology & Public Health, Yale University, New Haven, CT, USA
| | | | - Carlos M. Grilo
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA,Department of Psychology, Yale University, New Haven, CT, USA
| | - Evelyn Attia
- Division of Clinical Therapeutics, New York State Psychiatric Institute and the Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York, NY, USA
| | - B. Timothy Walsh
- Division of Clinical Therapeutics, New York State Psychiatric Institute and the Department of Psychiatry, College of Physicians and Surgeons of Columbia University, New York, NY, USA
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21
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Carrard I, Linden MV, Golay A. Comparison of Obese and Nonobese Individuals with Binge Eating Disorder: Delicate Boundary Between Binge Eating Disorder and Non-Purging Bulimia Nervosa. EUROPEAN EATING DISORDERS REVIEW 2012; 20:350-4. [DOI: 10.1002/erv.2174] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Isabelle Carrard
- Therapeutic Education Service for Chronic Diseases; University Hospitals of Geneva; Geneva; Switzerland
| | - Martial Van Linden
- Cognitive Psychopathology and Neuropsychology Unit; University of Geneva; Geneva; Switzerland
| | - Alain Golay
- Therapeutic Education Service for Chronic Diseases; University Hospitals of Geneva; Geneva; Switzerland
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22
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Kim SF. Animal models of eating disorders. Neuroscience 2012; 211:2-12. [PMID: 22465439 DOI: 10.1016/j.neuroscience.2012.03.024] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 03/16/2012] [Accepted: 03/16/2012] [Indexed: 01/30/2023]
Abstract
Feeding is a fundamental process for basic survival and is influenced by genetics and environmental stressors. Recent advances in our understanding of behavioral genetics have provided a profound insight on several components regulating eating patterns. However, our understanding of eating disorders, such as anorexia nervosa, bulimia nervosa, and binge eating, is still poor. The animal model is an essential tool in the investigation of eating behaviors and their pathological forms, yet development of an appropriate animal model for eating disorders still remains challenging due to our limited knowledge and some of the more ambiguous clinical diagnostic measures. Therefore, this review will serve to focus on the basic clinical features of eating disorders and the current advances in animal models of eating disorders.
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Affiliation(s)
- S F Kim
- Center for Neurobiology and Behavior, Department of Psychiatry and Pharmacology, The Perelman School of Medicine University of Pennsylvania, 125 S 31st St., TRL Rm 2207, Philadelphia, PA 19104, USA.
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24
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de Zwaan M, Herzog W. [Diagnostic criteria for eating disorders: what will DSM-5 feature?]. DER NERVENARZT 2012; 82:1100-6. [PMID: 21879399 DOI: 10.1007/s00115-010-3225-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The diagnostic criteria of the classic eating disorders anorexia nervosa (AN) and bulimia nervosa (BN) are characterized by both a high validity and clinical utility. However, up to 50% of patients in specialized eating disorder centers do not meet the full diagnostic criteria and are relegated to the residual diagnosis "eating disorders not otherwise specified (EDNOS)". Eating disorders are more varied and variable than the ICD-10 or DSM-IV criteria suggest. This article describes the suggested modifications of the diagnostic criteria for eating disorders for the DSM-5. The DSM-5 abstains from setting a specific numerical standard for weight for AN and reduces the required minimum frequency for BN and binge eating disorder (BED) to once a week over the last 3 months. This will likely reduce the number of cases in the EDNOS category. In addition, the DSM-5 provides brief descriptions of several conditions of potential clinical significance without providing detailed criteria in order to stimulate additional research.
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Affiliation(s)
- M de Zwaan
- Psychosomatische und Psychotherapeutische Abteilung, Universitätsklinikum Erlangen, Schwabachanlage 6, 91054 Erlangen, Deutschland.
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25
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Tseng MCM, Hu FC. Latent class analysis of eating and impulsive behavioral symptoms in Taiwanese women with bulimia nervosa. J Psychosom Res 2012; 72:65-72. [PMID: 22200525 DOI: 10.1016/j.jpsychores.2011.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 06/08/2011] [Accepted: 06/09/2011] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The implications of impulsivity in its relationship with binge-eating or purging behaviors remain unclear. This study examined the patterns of eating behaviors and co-morbid impulsive behaviors in individuals with bulimia nervosa n optimally homogeneous classes using latent class analysis (LCA). METHODS All participants (n=180) were asked to complete a series of self-reported inventories of impulsive behaviors and other psychological measures. Information regarding the lifetime presence of symptoms of eating disorder was assessed by clinical interviews. LCA was conducted using eating disorder symptoms, impulsive behaviors, and the number of purging methods. RESULTS Three latent classes of bulimic women were identified. These were women who exhibited relatively higher rates of purging, symptoms of impulsive behavior, and multiple purging methods (17.8%), women who used no more than one purging method with a low occurrence of impulsive behavior (41.7%), and women who showed higher rates of purging behaviors and the use of multiple purging methods with a low rate of impulsive behavior (41.7%). The impulsive sub-group had comparable severity of eating-related measures, frequency of binge-eating, and higher levels of general psychopathology than that of the other two sub-groups. CONCLUSION This study provides empirical support for the existence of an impulsive subgroup with distinctive features among a non-Western group of BN patients. This study also suggests that mechanisms other than impulse dysregulation may exist for the development of binge-eating and purging behaviors in bulimia nervosa patients, or the mechanisms contributing to binge-eating and impulsive behaviors may be different.
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Affiliation(s)
- Mei-Chih Meg Tseng
- Department of Psychiatry, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
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26
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Abstract
OBJECTIVE To present a cogent and practical review of the medical complications and their treatment in patients with bulimia nervosa. METHOD Thorough review of the medical literature from 1990 to current in regards to the medical complications of bulimia nervosa and the therapeutic intervention that are effective to treat them. RESULTS Extensive and detailed review of the medical complications of bulimia nervosa.
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Thomas JJ, Delinsky SS, St Germain SA, Weigel TJ, Tangren CM, Levendusky PG, Becker AE. How do eating disorder specialist clinicians apply DSM-IV diagnostic criteria in routine clinical practice? Implications for enhancing clinical utility in DSM-5. Psychiatry Res 2010; 178:511-7. [PMID: 20591498 DOI: 10.1016/j.psychres.2010.05.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 05/05/2010] [Accepted: 05/27/2010] [Indexed: 11/16/2022]
Abstract
The clinical utility of the DSM-IV eating disorder (ED) diagnostic criteria among practicing clinicians has not been formally evaluated, despite the considerable diagnostic challenges these disorders present. This study evaluated inter-rater reliability between research and clinical diagnoses, identified discrepantly rated diagnostic criteria, and evaluated ED subtype use in a naturalistic treatment setting. Seventy-six adolescent and young adult female patients consecutively admitted to a residential ED program were evaluated independently by clinicians (unstructured clinical interview) and research assessors (Structured Clinical Interview for DSM-IV). Clinicians and research assessors conferred concordant ED diagnoses in 80.3% of cases (kappa=0.70), thus highlighting the clinical utility of the extant DSM-IV diagnostic scheme in this specialty ED treatment setting. All but two discordant cases included a diagnosis of ED not otherwise specified (EDNOS). Clinicians applied ED subtypes in just 20.4% of eligible cases, and were significantly more likely to apply subtypes to major depressive disorder. Although clinical and research interviews yielded substantial reliability, EDNOS had the lowest reliability among the ED diagnoses. Moreover, infrequent subtype application on this specialty unit raises questions about the clinical utility of DSM-IV anorexia nervosa and bulimia nervosa subtypes, even in the context of clinically useful overarching categories.
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28
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Hinney A, Scherag S, Hebebrand J. Genetic findings in anorexia and bulimia nervosa. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2010; 94:241-70. [PMID: 21036328 DOI: 10.1016/b978-0-12-375003-7.00009-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Anorexia nervosa (AN) and bulimia nervosa (BN) are complex disorders associated with disordered eating behavior. Heritability estimates derived from twin and family studies are high, so that substantial genetic influences on the etiology can be assumed for both. As the monoaminergic neurotransmitter systems are involved in eating disorders (EDs), candidate gene studies have centered on related genes; additionally, genes relevant for body weight regulation have been considered as candidates. Unfortunately, this approach has yielded very few positive results; confirmed associations or findings substantiated in meta-analyses are scant. None of these associations can be considered unequivocally validated. Systematic genome-wide approaches have been performed to identify genes with no a priori evidence for their relevance in EDs. Family-based scans revealed linkage peaks in single chromosomal regions for AN and BN. Analyses of candidate genes in one of these regions led to the identification of genetic variants associated with AN. Currently, an international consortium is conducting a genome-wide association study for AN, which will hopefully lead to the identification of the first genome-wide significant markers.
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Affiliation(s)
- Anke Hinney
- Department of Child and Adolescent Psychiatry and Psychotherapy, University of Duisburg-Essen, Germany
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