Feeding and Eating Disorders in Bariatric Surgery: A Retrospective Study.

INTRODUCTION: Obese subjects undergoing bariatric surgery often display medical and psychiatric comorbidities, influencing post-operative course and long-term prognosis. Candidates for bariatric surgery are evaluated through a multidisciplinary assessment in the pre-operative phase, including a psychiatric visit. The psychiatric examination aims to screen psychiatric comorbidities, including feeding and eating disorders (FEDs). Indeed, there is evidence of the association between obesity and several psychiatric disorders, such as FEDs, but also anxiety disorders, mood disorders, psychotic disorders, neurodevelopment disorders and personality disorders, particularly B and C cluster personalities. This study aims to evaluate the presence of psychiatric comorbidities among a population of candidates for bariatric surgery, and to underline the clinical correlates of FEDs diagnosis at the pre-operative assessment. SUBJECTS AND METHODS: Patients were recruited at the outpatient service of the Section of Psychiatry, Clinical Psychology and Rehabilitation of the General Hospital/University of Perugia. Psychiatric comorbidities were investigated by a psychiatric interview and hetero-administered scales for the evaluation of DSM-5 psychiatric syndromes (Structured Interview for DSM-5 Disorders - clinical version - SCID-5-CV), psychopathological and personality characteristics (Minnesota Multiphasic Personality Inventory - MMPI-2 and Structured Clinical Interview for DSM-5-Personality Disorders - SCID-5-PD) and specific scales for the evaluation of FEDs (Binge Eating Scale - BES, Obesity Questionnaire - OQ, Bulimia Test-Revised - BULIT-R and Body Shape Questionnaire - BSQ). After performing descriptive statistics, we performed bivariate analyses to assess significant differences between subjects with and without FEDs diagnosis (p˂0.05). RESULTS: The sample was composed of 160 subjects (70.6% F versus 29.4% M). The average BMI was 42.90 ±6.258 and 86.8% of subjects had a Class 3 Obesity (BMI ≥40). 41.3% of patients received a psychiatric diagnosis and, specifically, a diagnosis of FEDs was highlighted in 28.7% cases. Individuals with FEDs more frequently had a family history of obesity and FEDs. As for psychopathological characteristics, altered scores on the BES and on the BULIT-R were more frequent in the group with psychiatric disorders excluding FEDs. CONCLUSIONS: Patients evaluated in bariatric surgery pre-operative assessment often display FEDs. Patients with FEDs more frequently suffer from other psychiatric disorders, showing the need for specific support pathways in this group of patients.

Eating disorders and emotional dysregulation are associated with insufficient weight loss after bariatric surgery: a 1-year observational follow-up study.

PURPOSE: Subjects with obesity, especially those seeking bariatric surgery, exhibit high rates of mental disorders and marked psychopathological traits. The primary objective of this prospective, non-interventional study was to investigate whether the presence of different psychiatric disorders, attention deficit/hyperactivity disorder (ADHD) symptomatology and emotional dysregulation influenced weight loss at 1-year follow-up after surgery. METHODS: Subjects consecutively referred for pre-surgical evaluation at the Obesity Center of Pisa University Hospital were recruited. Psychiatric diagnoses were made through the Mini-International Neuropsychiatric Interview (MINI) and ADHD symptomatology was assessed with the Wender-Reimherr Adult Attention Deficit Disorder Scale (WRAADDS). Emotional dysregulation was investigated through the WRAADDS and self-report questionnaires. After surgery, weight and obesity-related comorbidities were monitored during follow-up. RESULTS: Of the 99 participants recruited, 76 underwent surgery and 65 could be reevaluated 1 year after surgery. Subjects with insufficient weight loss (excess body mass index loss ≤ 53%, n = 15) had more frequent lifetime binge eating disorder (BED) and BED-mood disorders comorbidity than subjects with favorable post-surgical outcome. Additionally, they scored higher on both physician-administered and self-report scales assessing emotional dysregulation, which represents a nuclear symptom of ADHD in adults. At the logistic regression analysis, older age, higher preoperative excess body mass index and greater affective instability were predictors of reduced weight loss at 1-year follow-up. CONCLUSION: Emotional dysregulation seems to be associated with a worse outcome after bariatric surgery. Further studies with larger samples and longer follow-up are needed to confirm the influence of different psychiatric disorders and psychopathological traits on post-surgical outcome. LEVEL OF EVIDENCE: V, prospective descriptive study.

Psychiatric Comorbidity in Bariatric Surgery: A Retrospective Study in a General Hospital.

BACKGROUND: Candidates for bariatric surgery undergo a multidisciplinary evaluation in the pre-operative phase, including a psychiatric visit aimed at the screening for psychiatric comorbidities, including feeding and eating disorders (FEDs), which are shortcomings to the intervention or predictors of worse prognosis. The presence of FEDs, such as Binge Eating Disorder (BED) and Bulimia Nervosa (BN), is associated with higher rates of other psychiatric disorders. Furthermore, there is evidence of the association between obesity and Depressive Disorders, as well as B and C Cluster Personality Disorders. The aim of this study was to evaluate the presence of psychiatric comorbidities among a population of candidates for bariatric surgery. SUBJECTS AND METHODS: Subjects were recruited at the outpatient service of the Section of Psychiatry, Clinical Psychology and Rehabilitation of the General Hospital/University of Perugia after being referred by surgeons. Psychiatric comorbidities were investigated by means of the Structured Clinical Interview for DSM-5 Disorders. Subjects underwent specific assessment with scales for the evaluation of FEDs, namely Binge Eating Scale, Obesity Questionnaire, Bulimia Test-Revised and Body Shape Questionnaire. RESULTS: The sample consisted of 101 subjects: 43 (42.6%) were diagnosed with at least one psychiatric disorder, including FEDs. In particular, 30 subjects (29.7%) presented at least one FED, among which the most frequent were FED not otherwise specified (24.1%) and BED (6.8%). Moreover, 26 subjects (25.7%) were diagnosed with at least one psychiatric disorder other than FEDs, such as Personality Disorders (17.1%), with a higher prevalence of B and C Cluster Disorders. Depressive Disorders were detected in 5% of the sample. CONCLUSIONS: Subjects undergoing bariatric surgery often display psychiatric comorbidities, more frequently one or more FEDs. The systematic screening of these conditions should be implemented in the clinical practice in order to provide early intervention strategies and adequate monitoring.

Central and peripheral peptides regulating eating behaviour and energy homeostasis in anorexia nervosa and bulimia nervosa: a literature review.

A large body of literature suggests the occurrence of a dysregulation in both central and peripheral modulators of appetite in patients with anorexia nervosa (AN) and bulimia nervosa (BN), but at the moment, the state or trait-dependent nature of those changes is far from being clear. It has been proposed, although not definitively proved, that peptide alterations, even when secondary to malnutrition and/or to aberrant eating behaviours, might contribute to the genesis and the maintenance of some symptomatic aspects of AN and BN, thus affecting the course and the prognosis of these disorders. This review focuses on the most significant literature studies that explored the physiology of those central and peripheral peptides, which have prominent effects on eating behaviour, body weight and energy homeostasis in patients with AN and BN. The relevance of peptide dysfunctions for the pathophysiology of eating disorders is critically discussed.

The Leu72Met polymorphism of the ghrelin gene is significantly associated with binge eating disorder.

OBJECTIVES: The pathophysiological mechanisms underlying binge eating disorder are poorly understood. Evidence exists for the fact that abnormalities in peptides involved in the regulation of appetite, including ghrelin, may play a role in binge eating behavior. Genes involved in the ghrelin physiology may therefore contribute to the biological vulnerability to binge eating disorder. METHODS: We examined whether two polymorphisms of the ghrelin gene, the G152A (Arg51Gln) and C214A (Leu72Met), were associated with binge eating disorder. Ninety obese or nonobese women with binge eating disorder and 119 normal weight women were genotyped at the ghrelin gene. RESULTS: Statistical analyses showed that the Leu72Met ghrelin gene variant was significantly more frequent in binge eating disorder patients (chi2=5.940; d.f.=1, P=0.01) and was associated with a moderate, but significant risk to develop binge eating disorder (odds ratio=2.725, 95% confidence interval: 1.168-6.350). CONCLUSIONS: Although these data should be regarded as preliminary because of the small sample size, they suggest that the Leu72Met ghrelin gene variant may contribute to the genetic susceptibility to binge eating disorder.

No association of the Arg51Gln and Leu72Met polymorphisms of the ghrelin gene with anorexia nervosa or bulimia nervosa.

Genetic factors likely contribute to the biological vulnerability to anorexia nervosa (AN) and bulimia nervosa (BN). We investigated whether the Arg51Gln and/or the Leu72Met gene polymorphisms of the human ghrelin, a peptide involved in the regulation of eating behavior, were associated to AN and/or BN. Two-hundred-ninety-two Caucasian women (114 with BN, 59 with AN and 119 healthy controls) participated into the study. No significant differences were found in the frequencies of the Arg51Gln and the Leu72Met ghrelin gene variants among patients with AN or BN and healthy controls. Moreover, no significant differences emerged in eating-related phenotypic variables between patients carrying the Leu72Met genotype as compared to those with the Leu72Leu genotype. These results suggest that the Arg51Gln and the Leu72Met polymorphisms of the human ghrelin gene do not contribute to the genetic susceptibility to AN and BN.

Circulating ghrelin is decreased in non-obese and obese women with binge eating disorder as well as in obese non-binge eating women, but not in patients with bulimia nervosa.

Ghrelin is a peripheral gastric peptide involved in the regulation of eating behavior and energy homeostasis. While changes in ghrelin plasma levels have been found in anorexia nervosa, bulimia nervosa (BN) and obesity, no study has assessed circulating ghrelin in binge eating disorder (BED). Therefore, we measured plasma levels of this peptide in women with BED as compared to women with BN, obesity and healthy controls. One hundred and eighty-two drug-free women (56 bulimics, 13 non-obese and 34 obese BED subjects, 28 obese non-binge eating women and 51 non-obese healthy women) underwent psychopathological and nutritional assessments and blood sample collection for glucose and ghrelin assays in the morning. As compared to non-obese healthy women, both non-obese and obese BED women as well as obese non-binge eating women had significantly increased values of body weight, body mass index and body fat mass. Moreover, plasma ghrelin concentrations were significantly decreased in both non-obese (P<0.01) and obese (P<0.0001) BED women as well as in obese non-binge eating women (P<0.001) but not in women with BN. No significant correlations emerged between plasma ghrelin values and the frequency of binge/vomiting in BN subjects or the frequency of bingeing in BED individuals. The reduction of plasma ghrelin in non-obese and obese binge eaters as well as in obese non-binge eaters may represent a secondary change aiming to counteract their positive energy imbalance.