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.

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.

Chemerin predicts carotid intima-media thickening in severe obesity.

BACKGROUND AND AIMS: Chemerin is an adipokine with an emerging role in the crosstalk between adipose tissue and immune system. It is overexpressed in severe obesity, affects adipogenesis and glucose homeostasis and it correlates with early vascular damage. The aim of this study is to investigate the correlation between circulating levels of chemerin and early vascular damage in subjects with severe obesity, before and after laparoscopic sleeve gastrectomy (LSG). METHODS: Fifty-six obese subjects eligible for LSG were enrolled in the study. The following parameters were evaluated: body mass index (BMI), glycemia, insulinemia, glycated haemoglobin, lipid profile, plasma chemerin levels and carotid intima-media thickness (cIMT). Fifty-four subjects were evaluated 1 year after the intervention. RESULTS: Univariate analysis showed a direct and significant correlation between chemerin and waist circumference, insulin resistance, glycated haemoglobin and cIMT. Chemerin was a better predictor of intima-media thickening than waist circumference and glycated haemoglobin at the ROC curve analysis, with a cut-off value for chemerin of 140 ng/mL. The reduction of chemerin is independently associated with the reduction of cIMT and the improvement of insulin sensitivity after LSG. CONCLUSION: Chemerin is involved in the development and progression of early vascular damage and insulin resistance in subjects with severe obesity, and in their healing after bariatric surgery. Chemerin could also have a role in the assessment of cardiovascular risk in subjects with severe obesity.

Increased plasmatic NETs by-products in patients in severe obesity.

Neutrophil extracellular traps (NETs) are DNAs products involved in immune process. Obesity through a low-grade chronic inflammation determines neutrophil activation, but it is still unclear its role in NETs formation. Here we analyzed the NETs levels in healthy and morbid obese, their association with anthropometric and glyco-metabolic parameters and their changes after bariatric surgery. For this study, we enrolled 73 patients with morbid obesity (BMI ≥40 kg/m2 or ≥35 kg/m2 + comorbidity) eligible to sleeve gastrectomy. In parallel, 55 healthy subjects and 21 patients with severe coronary artery disease were studied as controls. We evaluated anthropometric parameters, peripheral blood pressure, biochemical and serum analysis at the enrollment and at twelve months after surgery. Plasmatic levels of MPO-DNA complexes were assessed by ELISA. NETs levels were higher in obese than in control group (p < 0.001) and correlated with the main anthropometric variable (BMI, waist, hip), glyco-metabolic variables and systolic blood pressure. NETs trend after intervention was uneven. The reduction of NETs correlated with the entity of reduction of BMI (ρ = 0.416, p < 0.05), visceral fat area (ρ = 0.351, p < 0.05), and glycemia (ρ = 0.495, p < 0.001). In medical history of patients in whom NETs increased, we observed a higher number of thromboembolic events. Our observations indicate that severe obesity is associated with increased generation of NETs, which in turn could influence the patients' systemic inflammatory state. Weight loss and in particular, loss of adipose tissue after bariatric surgery does not in itself correct NET's dysregulated production. Finally, patients in whom NETs accumulation persists after surgery are probably those at the highest risk of cardiovascular events.

Lysosomal Acid Lipase as a Molecular Target of the Very Low Carbohydrate Ketogenic Diet in Morbidly Obese Patients: The Potential Effects on Liver Steatosis and Cardiovascular Risk Factors.

A very low carbohydrate ketogenic diet (VLCKD) is an emerging technique to induce a significant, well-tolerated, and rapid loss of body weight in morbidly obese patients. The low activity of lysosomal acid lipase (LAL) could be involved in the pathogenesis of non-alcoholic fatty liver disease (NAFLD), which is a common feature in morbidly obese patients. Fifty-two obese patients suitable for a bariatric surgery intervention underwent a 25-day-long VLCKD. The biochemical markers of glucose and lipid metabolism, and flow-mediated dilation (FMD) of the brachial artery were measured before and after VLCKD. LAL activity was measured using the dried blood spot technique in 20 obese patients and in a control group of 20 healthy, normal-weight subjects. After VLCKD, we observed a significant reduction in body mass index, fasting glucose, insulinemia, and lipid profile parameters. No significant variation in FMD was observed. The number of patients with severe liver steatosis significantly decreased. LAL activity significantly increased, although the levels were not significantly different as compared to the control group. In conclusion, VLCKD induces the activity of LAL in morbidly obese subjects and reduces the secretion of all circulating lipoproteins. These effects could be attributed to the peculiar composition of the diet, which is particularly poor in carbohydrates and relatively rich in proteins.

Microcirculatory Improvement Induced by Laparoscopic Sleeve Gastrectomy Is Related to Insulin Sensitivity Retrieval.

AIMS: Microvascular dysfunction is a potential factor explaining the association of obesity, insulin resistance, and vascular damage in morbidly obese subjects. The purpose of the study was to evaluate possible determinants of microcirculatory improvement 1 year after laparoscopic sleeve gastrectomy (LSG) intervention. METHODS: Thirty-seven morbidly obese subjects eligible for bariatric surgery were included in the study. Post-occlusive reactive hyperemia (PORH) of the forearm skin was measured as area of hyperemia (AH) by laser-Doppler flowmetry before LSG and after a 1-year follow-up. RESULTS: After intervention, we observed a significant reduction in BMI, HOMA index, HbA1c, and a significant increase of AH in all patients after surgery; this variation was significant only in those patients having insulin resistance or prediabetes/diabetes. Although significant correlation between the increase of AH and the reduction of both BMI, HOMA index, and HbA1c was observed, BMI was the only independent predictor of AH variation after LSG at the linear regression analysis. CONCLUSIONS: Our study shows that LSG intervention is correlated with a significant improvement in the microvascular function of morbidly obese subjects; this improvement seems to be related to the baseline degree of insulin-resistance and to the retrieval of insulin-sensitivity post-intervention.