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Qanaq D, O'Keeffe M, Cremona S, Bernardo WM, McIntyre RD, Papada E, Benkalkar S, Rubino F. The Role of Dietary Intake in the Weight Loss Outcomes of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy: A Systematic Review and Meta-analysis. Obes Surg 2024:10.1007/s11695-024-07183-8. [PMID: 38907132 DOI: 10.1007/s11695-024-07183-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 03/15/2024] [Accepted: 03/15/2024] [Indexed: 06/23/2024]
Abstract
The relationship between postoperative dietary intake and weight loss after bariatric surgery remains unclear. We performed a systematic review and meta-analysis of studies published between January 2000 and May 2023, reporting weight loss outcomes, and dietary intake before and after Roux-en-Y gastric bypass and sleeve gastrectomy. A total of 42 studies were included. There was no detectable difference in dietary intake between the two procedures. Roux-en-Y gastric bypass induced an average decrease in energy intake of 886 kcal/day at 12-month post-surgery; however, there was no correlation between daily energy intake and weight loss. These findings show a substantial reduction of energy intake in the first year after bariatric surgery but do not support a link between lower energy intake and greater weight loss.
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Affiliation(s)
- Dalal Qanaq
- School of Cardiovascular and Metabolic Medicine and Sciences, King's College London, James Black Centre, Denmark Hill Campus, 125 Coldharbour Road, London, SE5 9RJ, UK
- College of Applied Medical Sciences, King Saud Bin Abdulaziz University for Health Sciences, 11481, Riyadh, Kingdom of Saudi Arabia
- King Abdullah International Medical Research Centre, 11481, Riyadh, Kingdom of Saudi Arabia
- Department of Nutritional Sciences, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
| | - Majella O'Keeffe
- Department of Nutritional Sciences, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
- School of Food and Nutritional Sciences, University College Cork, College Road, Cork, Ireland
| | - Simone Cremona
- School of Cardiovascular and Metabolic Medicine and Sciences, King's College London, James Black Centre, Denmark Hill Campus, 125 Coldharbour Road, London, SE5 9RJ, UK
- General and Digestive Surgery Department of Hospital Del Mar de, 08003, Barcelona, Spain
| | | | - Robert D McIntyre
- School of Cardiovascular and Metabolic Medicine and Sciences, King's College London, James Black Centre, Denmark Hill Campus, 125 Coldharbour Road, London, SE5 9RJ, UK
- School of Sport, Exercise and Applied Science, St Mary's University, Twickenham, London, TW1 4SX, UK
| | - Efstathia Papada
- School of Cardiovascular and Metabolic Medicine and Sciences, King's College London, James Black Centre, Denmark Hill Campus, 125 Coldharbour Road, London, SE5 9RJ, UK
- Division of Medicine, University College London, London, WC1E 6JF, UK
| | - Saumit Benkalkar
- School of Cardiovascular and Metabolic Medicine and Sciences, King's College London, James Black Centre, Denmark Hill Campus, 125 Coldharbour Road, London, SE5 9RJ, UK
| | - Francesco Rubino
- School of Cardiovascular and Metabolic Medicine and Sciences, King's College London, James Black Centre, Denmark Hill Campus, 125 Coldharbour Road, London, SE5 9RJ, UK.
- Bariatric and Metabolic Surgery, King's College Hospital, London, SE5 9RS, UK.
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Papakostas P, Tzikos G, Pyankova G, Menni AE, Pourtoulidou DF, Shrewsbury AD, Lidoriki I, Stelmach V, Fyntanidou B, Grosomanidis V, Stavrou G, Kotzampassi K. Changes in Food Preferences Before and After Intragastric Balloon Placement. Obes Surg 2024; 34:2091-2100. [PMID: 38703243 DOI: 10.1007/s11695-024-07233-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 04/08/2024] [Accepted: 04/16/2024] [Indexed: 05/06/2024]
Abstract
BACKGROUNDS In recent years, numerous studies have tried to decode the way bariatric surgery works toward weight reduction by the use of food preference questionnaires. The intragastric balloon has gained popularity, mainly due to its limited invasiveness, in patients with obesity not fulfilling criteria for bariatric surgery. However, there is no study assessing the changes in food preferences [FP]. We decided to analyze the FP of individuals prior to intragastric balloon insertion and following its removal, on the strict condition that participants must complete the 6-month treatment period and attend at least 4 of the 7 follow-up interviews. METHODS Patients were asked to rate the frequency of consumption of 63 food items before balloon insertion, at monthly intervals and after balloon removal. The food categories were protein, carbohydrates, fruit and vegetables, and sweets and fats. RESULTS The questionnaires of 320 participants were analyzed. A reduced frequency in consumption of meat and meat products, high-fat, and high-carbohydrate/sugary products and an increase in raw vegetables and fruit was found in all individuals. CONCLUSION The intragastric balloon seems to exert analogically similar mechanisms to bariatric surgery for weight loss, both functioning through alterations in FP. These are dictated by the anatomical re-configuration of the stomach, but mainly by counseling of dieticians and the self-education of the patient after experiencing unpleasant postprandial discomfort.
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Affiliation(s)
- Pyrros Papakostas
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | - Georgios Tzikos
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | - Gerry Pyankova
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | | | | | - Anne D Shrewsbury
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | - Irene Lidoriki
- First Department of Surgery, National & Kapodistrian University of Athens, Athens, Greece
| | - Veroniki Stelmach
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | - Barbara Fyntanidou
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | - Vasilis Grosomanidis
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | - George Stavrou
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece
| | - Katerina Kotzampassi
- Department of Surgery, Aristotle Univesity of Thessaloniki, 54636, Thessaloniki, Greece.
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Alabduljabbar K, Bonanos E, Miras AD, le Roux CW. Mechanisms of Action of Bariatric Surgery on Body Weight Regulation. Gastroenterol Clin North Am 2023; 52:691-705. [PMID: 37919021 DOI: 10.1016/j.gtc.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Bariatric surgery is an effective treatment modality for obesity and obesity-associated complications. Weight loss after bariatric surgery was initially attributed to anatomic restriction or reduced energy absorption, but now it is understood that surgery treats obesity by influencing the subcortical areas of the brain to lower adipose tissue mass. There are three major phases of this process: initially the weight loss phase, followed by a phase where weight loss is maintained, and in a subset of patients a phase where weight is regained. These phases are characterized by altered appetitive behavior together with changes in energy expenditure. The mechanisms associated with the rearrangement of the gastrointestinal tract include central appetite control, release of gut peptides, change in microbiota and bile acids. However, the exact combination and timing of signals remain largely unknown.
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Affiliation(s)
- Khaled Alabduljabbar
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland; Department of Family Medicine and Polyclinics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
| | | | | | - Carel W le Roux
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland.
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Tolvanen L, Christenson A, Bonn SE, Surkan PJ, Lagerros YT. Patients' Perspectives on Dietary Patterns and Eating Behaviors During Weight Regain After Gastric Bypass Surgery. Obes Surg 2023; 33:2517-2526. [PMID: 37402891 PMCID: PMC10345057 DOI: 10.1007/s11695-023-06718-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/24/2023] [Accepted: 06/28/2023] [Indexed: 07/06/2023]
Abstract
PURPOSE Food quality, energy intake, and various eating-related problems have been highlighted as some of the components influencing weight after bariatric surgery. This study aimed to increase our knowledge of patients' perspectives on dietary patterns and eating behaviors during weight regain after bariatric surgery. MATERIALS AND METHODS We recruited 4 men and 12 women with obesity and the experience of weight regain after bariatric surgery at an obesity clinic in Stockholm, Sweden. Data were collected during 2018-2019. We conducted a qualitative study, carried out individual semi-structured interviews, and analyzed the recorded and transcribed interview data with thematic analysis. RESULTS Participants had regained 12 to 71% from their lowest weight after gastric bypass surgery performed 3 to 15 years before. They perceived their dietary challenges as overwhelming and had not expected weight management, meal patterns, increasing portion sizes, and appealing energy-dense foods to be problematic after surgery. In addition, difficulties with disordered eating patterns, emotional eating, and increased alcohol intake further contributed to the weight management hurdles. Insufficient nutritional knowledge and lack of support limited participants' ability to avoid weight regain, leading to restrictive eating and dieting without sustained weight loss. CONCLUSION Eating behavior and dietary factors such as lack of nutritional knowledge, emotional eating, or disorganized meal patterns contribute to difficulties with weight management after gastric bypass surgery. Improved counseling may help patients prepare for possible weight regain and remaining challenges with food and eating. The results highlight the importance of regular medical nutrition therapy after gastric bypass surgery.
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Affiliation(s)
- Liisa Tolvanen
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Maria Aspmans gata 30A, Stockholm, SE-171 64 Sweden
- Center for Obesity, Academic Specialist Center, Stockholm, Sweden
| | - Anne Christenson
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Maria Aspmans gata 30A, Stockholm, SE-171 64 Sweden
- Center for Obesity, Academic Specialist Center, Stockholm, Sweden
| | - Stephanie E. Bonn
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Maria Aspmans gata 30A, Stockholm, SE-171 64 Sweden
| | - Pamela J. Surkan
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD USA
| | - Ylva Trolle Lagerros
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Maria Aspmans gata 30A, Stockholm, SE-171 64 Sweden
- Center for Obesity, Academic Specialist Center, Stockholm, Sweden
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Alsaqaaby MS, le Roux CW. Weight loss to disrupt type 2 diabetes. Diabetol Int 2023; 14:217-223. [PMID: 37397909 PMCID: PMC10307744 DOI: 10.1007/s13340-023-00626-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 03/07/2023] [Indexed: 07/04/2023]
Abstract
Obesity is now recognised as a disease associated with significant morbidity and mortality. One of the most common metabolic complications of obesity is type 2 diabetes, because the two disease share similar pathophysiology. Weight loss is known to ameliorate the metabolic abnormalities underlying type 2 diabetes and improve glycemic control. A 15% or greater total body weight loss (TBWL) in patients with type 2 diabetes will have a disease-modifying effect, a result that is incomparable with other hypoglycemic-lowering interventions. Moreover, in patients with diabetes and obesity, weight loss exerts benefits beyond glycemic control and improves cardiometabolic disease risk factors and well-being. We review evidence supporting the role of intentional weight loss in managing type 2 diabetes. We suggest that many people with type 2 diabetes would benefit from an additional weight-based approach to managing their diabetes. Therefore, we proposed a weight-based treatment goal for patients with type 2 diabetes and obesity.
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Affiliation(s)
- Moath S. Alsaqaaby
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
- Obesity, Endocrine and Metabolism Center, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Carel W. le Roux
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
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Alabduljabbar K, Al-Najim W, le Roux CW. Food preferences after bariatric surgery: a review update. Intern Emerg Med 2023; 18:351-358. [PMID: 36478323 DOI: 10.1007/s11739-022-03157-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/20/2022] [Indexed: 12/13/2022]
Abstract
Obesity is a serious and global health problem. The multiple complications of obesity reduce quality of life and increase mortality. Bariatric surgery is one of the best treatment options for obesity management. Bariatric surgery helps people reduce their caloric intake by treating the disease of obesity effectively, in part by increasing signaling from the gut to the brain. The most frequent surgical options are Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). There is controversy regarding changes in food preferences and selection after bariatric surgery. In this review, we aim to outline the changes in food intake and selection, clarify the behavior changes in food intake, and assess the potential mechanisms responsible for these changes in patients after bariatric surgery.
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Affiliation(s)
- Khaled Alabduljabbar
- Department of Family Medicine and Polyclinics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Werd Al-Najim
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Carel W le Roux
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland.
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Barstad LH, Johnson LK, Borgeraas H, Hofsø D, Svanevik M, Småstuen MC, Hertel JK, Hjelmesæth J. Changes in dietary intake, food tolerance, hedonic hunger, binge eating problems, and gastrointestinal symptoms after sleeve gastrectomy compared with after gastric bypass; 1-year results from the Oseberg study-a randomized controlled trial. Am J Clin Nutr 2023; 117:586-598. [PMID: 36811476 DOI: 10.1016/j.ajcnut.2022.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 11/15/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The randomized Oseberg study compared the effects of sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB), on the 1-y remission of type 2 diabetes and β-cell function (primary outcomes). However, little is known about the comparable effects of SG and RYGB on the changes in dietary intakes, eating behavior, and gastrointestinal discomfort. OBJECTIVES To compare 1-y changes in intakes of macro- and micronutrients, food groups, food tolerance, hedonic hunger, binge eating, and gastrointestinal symptoms after SG and RYGB. METHODS Among others, prespecified secondary outcomes were dietary intake, food tolerance, hedonic hunger, binge eating, and gastrointestinal symptoms assessed with a food frequency questionnaire, food tolerance questionnaire, Power of food scale, Binge eating scale, and Gastrointestinal symptom rating scale, respectively. RESULTS A total of 109 patients (66% females), with mean (SD) age 47.7 (9.6) y and body mass index of 42.3 (5.3) kg/m2, were allocated to SG (n = 55) or RYGB (n = 54). The SG group had, compared with the RYGB group, greater 1-y reductions in the intakes of: protein, mean (95% CI) between-group difference, -13 (-24.9, -1.2) g; fiber, -4.9 (-8.2, -1.6) g; magnesium, -77 (-147, -6) mg; potassium, -640 (-1237, -44) mg; and fruits and berries, -65 (-109, -20) g. Further, the intake of yogurt and fermented milk products increased by >2-folds after RYGB but remained unchanged after SG. In addition, hedonic hunger and binge eating problems declined similarly after both surgeries, whereas most gastrointestinal symptoms and food tolerance remained stable at 1 y. CONCLUSIONS The 1-y changes in dietary intakes of fiber and protein after both surgical procedures, but particularly after SG, were unfavorable with regard to current dietary guidelines. For clinical practice, our findings suggest that health care providers and patients should focus on sufficient intakes of protein, fiber, and vitamin and mineral supplementation after both SG and RYGB. This trial was registered at [clinicaltrials.gov] as [NCT01778738].
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Affiliation(s)
- Lisa H Barstad
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway.
| | - Line K Johnson
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway
| | - Heidi Borgeraas
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway
| | - Dag Hofsø
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway; Department of Medicine, Vestfold Hospital Trust, Tønsberg, Norway
| | - Marius Svanevik
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway; Department of Gastrointestinal Surgery, Vestfold Hospital Trust, Tønsberg, Norway
| | | | - Jens K Hertel
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway
| | - Jøran Hjelmesæth
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway; Department of Endocrinology, Morbid Obesity and Preventive Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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Behary P, Alessimii H, Miras AD, Tharakan G, Alexiadou K, Aldhwayan MM, Purkayastha S, Moorthy K, Ahmed AR, Bloom SR, Tan TM. Tripeptide gut hormone infusion does not alter food preferences or sweet taste function in volunteers with obesity and prediabetes/diabetes but promotes restraint eating: A secondary analysis of a randomized single-blind placebo-controlled study. Diabetes Obes Metab 2023; 25:1731-1739. [PMID: 36811311 DOI: 10.1111/dom.15028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/12/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023]
Abstract
AIMS To investigate whether the elevation in postprandial concentrations of the gut hormones glucagon-like peptide-1 (GLP-1), oxyntomodulin (OXM) and peptide YY (PYY) accounts for the beneficial changes in food preferences, sweet taste function and eating behaviour after Roux-en-Y gastric bypass (RYGB). MATERIALS AND METHODS This was a secondary analysis of a randomized single-blind study in which we infused GLP-1, OXM, PYY (GOP) or 0.9% saline subcutaneously for 4 weeks in 24 subjects with obesity and prediabetes/diabetes, to replicate their peak postprandial concentrations, as measured at 1 month in a matched RYGB cohort (ClinicalTrials.gov NCT01945840). A 4-day food diary and validated eating behaviour questionnaires were completed. Sweet taste detection was measured using the method of constant stimuli. Correct sucrose identification (corrected hit rates) was recorded, and sweet taste detection thresholds (EC50s: half maximum effective concencration values) were derived from concentration curves. The intensity and consummatory reward value of sweet taste were assessed using the generalized Labelled Magnitude Scale. RESULTS Mean daily energy intake was reduced by 27% with GOP but no significant changes in food preferences were observed, whereas a reduction in fat and increase in protein intake were seen post-RYGB. There was no change in corrected hit rates or detection thresholds for sucrose detection following GOP infusion. Additionally, GOP did not alter the intensity or consummatory reward value of sweet taste. A significant reduction in restraint eating, comparable to the RYGB group was observed with GOP. CONCLUSION The elevation in plasma GOP concentrations after RYGB is unlikely to mediate changes in food preferences and sweet taste function after surgery but may promote restraint eating.
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Affiliation(s)
- Preeshila Behary
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, UK
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
| | - Haya Alessimii
- Clinical Nutrition Department, College of Applied Medical Sciences, Umm Al Qura University, Mecca, Saudi Arabia
| | - Alexander D Miras
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, UK
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
- School of Medicine, Ulster University, Londonderry, UK
| | - George Tharakan
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, UK
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
| | - Kleopatra Alexiadou
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, UK
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
| | - Madhawi M Aldhwayan
- Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Sanjay Purkayastha
- Department of Surgery and Cancer, Imperial College Healthcare National Health Service Trust, London, UK
| | - Krishna Moorthy
- Department of Surgery and Cancer, Imperial College Healthcare National Health Service Trust, London, UK
| | - Ahmed R Ahmed
- Department of Surgery and Cancer, Imperial College Healthcare National Health Service Trust, London, UK
| | - Stephen R Bloom
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, UK
| | - Tricia M Tan
- Section of Endocrinology and Investigative Medicine, Imperial College London, London, UK
- Department of Endocrinology, Imperial College Healthcare NHS Trust, London, UK
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Albaugh VL, He Y, Münzberg H, Morrison CD, Yu S, Berthoud HR. Regulation of body weight: Lessons learned from bariatric surgery. Mol Metab 2023; 68:101517. [PMID: 35644477 PMCID: PMC9938317 DOI: 10.1016/j.molmet.2022.101517] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 05/04/2022] [Accepted: 05/21/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bariatric or weight loss surgery is currently the most effective treatment for obesity and metabolic disease. Unlike dieting and pharmacology, its beneficial effects are sustained over decades in most patients, and mortality is among the lowest for major surgery. Because there are not nearly enough surgeons to implement bariatric surgery on a global scale, intensive research efforts have begun to identify its mechanisms of action on a molecular level in order to replace surgery with targeted behavioral or pharmacological treatments. To date, however, there is no consensus as to the critical mechanisms involved. SCOPE OF REVIEW The purpose of this non-systematic review is to evaluate the existing evidence for specific molecular and inter-organ signaling pathways that play major roles in bariatric surgery-induced weight loss and metabolic benefits, with a focus on Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG), in both humans and rodents. MAJOR CONCLUSIONS Gut-brain communication and its brain targets of food intake control and energy balance regulation are complex and redundant. Although the relatively young science of bariatric surgery has generated a number of hypotheses, no clear and unique mechanism has yet emerged. It seems increasingly likely that the broad physiological and behavioral effects produced by bariatric surgery do not involve a single mechanism, but rather multiple signaling pathways. Besides a need to improve and better validate surgeries in animals, advanced techniques, including inducible, tissue-specific knockout models, and the use of humanized physiological traits will be necessary. State-of-the-art genetically-guided neural identification techniques should be used to more selectively manipulate function-specific pathways.
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Affiliation(s)
- Vance L Albaugh
- Translational and Integrative Gastrointestinal and Endocrine Research Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Yanlin He
- Brain Glycemic and Metabolism Control Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Heike Münzberg
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Christopher D Morrison
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Sangho Yu
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Hans-Rudolf Berthoud
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA.
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Long-term changes in dietary intake and its association with eating-related problems after gastric bypass in adolescents. Surg Obes Relat Dis 2022; 18:1399-1406. [PMID: 36195523 DOI: 10.1016/j.soard.2022.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/02/2022] [Accepted: 08/11/2022] [Indexed: 01/12/2023]
Abstract
BACKGROUND Roux-en-Y gastric bypass (RYGB) surgery is an established, effective treatment for severe adolescent obesity. Long-term dietary intake and the relationship to eating-related problems are scarcely evaluated in this population. OBJECTIVES Assess changes in dietary intake in adolescents after RYGB and explore associations between dietary intake and eating-related problems. SETTING Multicenter study in Swedish university hospitals. METHOD Diet history, binge eating scale (BES), and Three-Factor Eating Questionnaire were assessed preoperatively and 1, 2, and 5 years after RYGB in 85 adolescents (67% female) aged 16.5 ± 1.2 years with a body mass index (BMI) of 45.5 ± 6.0 kg/m2 and compared with control individuals at 5 years. RESULTS Five-year BMI change was -28.6% ± 12.7% versus +9.9% ± 18.9% in RYGB patients versus control individuals (P < .001). Through 5 years, RYGB adolescents reported reduced energy intake, portion size of cooked meals at dinner, and milk/yoghurt consumption (P < .01). The BES scores were 9.3 ± 8.3 versus 13.4 ± 10.5 in RYGB patients versus control individuals (P = .04). Association between BES score and energy intake was stronger in control individuals (r = .27 versus r = .62 in RYGB patients versus control individuals, P < .001). At 5 years, lower energy intake was associated with greater BMI loss in all adolescents (r = .33, P < .001). Higher scores in BES and uncontrolled and emotional eating were associated with higher energy intake, cooked meals, candies/chocolates, cakes/cookies, desserts, and sugary drinks (r > .23, P < .04) and lower intake of fruits/berries (r = -.32, P = .044). A higher score in cognitive restraint was associated with a higher intake of cereals and fruits/berries (r > .22, P < .05) and a lower intake of sugary drinks (r = -.24, P < .03). CONCLUSION To support optimization of long-term outcomes in adolescent RYGB patients, it is important to provide management strategies to reduce energy intake. Monitoring eating-related problems could identify potential individuals at risk of poor weight loss and to initiate treatment interventions.
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11
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The Neural Code for Taste in the Nucleus of the Solitary Tract of Rats with Obesity Following Roux-En-Y Gastric Bypass Surgery. Nutrients 2022; 14:nu14194129. [PMID: 36235781 PMCID: PMC9570596 DOI: 10.3390/nu14194129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 11/07/2022] Open
Abstract
Previous work has shown that taste responses in the nucleus tractus solitarius (NTS; the first central relay for gustation) are blunted in rats with diet-induced obesity (DIO). Here, we studied whether these effects could be reversed by Roux-en-Y gastric bypass (RYGB) surgery, an effective treatment for obesity. Rats were fed a high energy diet (60% kcal fat; HED) both before and after undergoing RYGB. Electrophysiological responses from NTS cells in unrestrained rats were recorded as they licked tastants from a lick spout. Sweet, salty, and umami tastes, as well as their naturalistic counterparts, were presented. Results were compared with those of lean rats from a previous study. As with DIO rats, NTS cells in RYGB rats were more narrowly tuned, showed weaker responses, and less lick coherence than those in lean rats. Both DIO and RYGB rats licked at a slower rate than lean rats and paused more often during a lick bout. However, unlike DIO rats, the proportion of taste cells in RYGB rats was similar to that in lean rats. Our data show that, despite being maintained on a HED after surgery, RYGB can induce a partial recovery of the deficits seen in the NTS of DIO rats.
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12
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Özdemir A, Yozgat A, Işgın-Atıcı K, Avcı E, Yıldız BD, Gündoğdu A, Nalbantoğlu U, Turhan T, Doğruman-Al F, Büyüktuncer Z. Potential associations between alterations in gut microbiome and obesity-related traits after the bariatric surgery. J Hum Nutr Diet 2022; 36:981-996. [PMID: 36082501 DOI: 10.1111/jhn.13087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 09/01/2022] [Indexed: 11/29/2022]
Abstract
AIM This study aimed to examine the effects of both obesity and bariatric surgery on gut microbiome, dietary intake, as well as metabolic and inflammatory parameters. METHODS All participants (15 with morbid obesity who had bariatric surgery, 8 with morbid obesity and 11 non-obese) were followed-up for a 6-month period with the interviews at baseline (M0), at the end of 3 (M3) and 6 months (M6). Dietary assessment was done, and blood and faecal samples were collected. RESULTS Dietary energy and nutrient intakes as well as serum levels glucose, total cholesterol, LDL-cholesterol, and hs-CRP levels decreased by surgery (p<0.05, for each). Participants with morbid obesity had higher levels of Firmicutes and lower levels of Bacteroidetes at M0 compared to non-obese participants. The abundances of Bacteroidetes increased (p=0.02) while Firmicutes decreased (p>0.05) by the surgery, leading a significant decrease in Firmicutes/Bacteroidetes ratio (p=0.01). At sub-phylum level, the abundances of Lactobacillus and Bifidobacterium decreased while Akkermansia increased by the surgery (p<0.01, for each). Although participants who are morbidly obese had a distinct profile according to ß-diversity indices at M0, it became similar with the profile of non-obese participants (p>0.05) at M3 and M6. Similarly, α-diversity indices were lower in subjects with morbid obesity at M0, but became similar to levels in non-obese controls at M6. CONCLUSION This study confirmed that bariatric surgery has substantial impacts on gut microbiome composition and diversity, as well as anthropometrical measurements and biochemical parameters, which were associated with the alterations in dietary intake patterns. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Aslıhan Özdemir
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Hacettepe University, Ankara, Turkey
| | - Ahmet Yozgat
- Department of Gastroenterology, Ankara Numune Research and Education Hospital, Ankara, Turkey
| | - Kübra Işgın-Atıcı
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Hacettepe University, Ankara, Turkey
| | - Enver Avcı
- Department of Gastroenterology, Ankara Numune Research and Education Hospital, Ankara, Turkey
| | - Barış D Yıldız
- Department of General Surgery, Ankara Numune Research and Education Hospital, Ankara, Turkey
| | - Aycan Gündoğdu
- Department of Microbiology and Clinical Microbiology, School of Medicine, Erciyes University, Kayseri, Turkey.,Genome and Stem Cell, Center, Erciyes University, Kayseri, Turkey.,ENBIOSIS Biotechnology, Istanbul, Turkey
| | - Ufuk Nalbantoğlu
- Genome and Stem Cell, Center, Erciyes University, Kayseri, Turkey.,ENBIOSIS Biotechnology, Istanbul, Turkey.,Department of Computer Engineering, School of Engineering, Erciyes University, Kayseri, Turkey
| | - Turan Turhan
- Department of Biochemistry, Ankara Numune Research and Education Hospital, Ankara, Turkey
| | - Funda Doğruman-Al
- Department of Medical Microbiology, School of Medicine, Gazi University, Ankara, Turkey
| | - Zehra Büyüktuncer
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Hacettepe University, Ankara, Turkey
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Livingstone MBE, Redpath T, Naseer F, Boyd A, Martin M, Finlayson G, Miras AD, Bodnar Z, Kerrigan D, Pournaras DJ, le Roux CW, Spector AC, Price RK. Food Intake Following Gastric Bypass Surgery: Patients Eat Less but Do Not Eat Differently. J Nutr 2022; 152:2319-2332. [PMID: 36774099 PMCID: PMC9644182 DOI: 10.1093/jn/nxac164] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 06/20/2022] [Accepted: 07/19/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Lack of robust research methodology for assessing ingestive behavior has impeded clarification of the mediators of food intake following gastric bypass (GBP) surgery. OBJECTIVES To evaluate changes in directly measured 24-h energy intake (EI), energy density (ED) (primary outcomes), eating patterns, and food preferences (secondary outcomes) in patients and time-matched weight-stable comparator participants. METHODS Patients [n = 31, 77% female, BMI (in kg/m2) 45.5 ± 1.3] and comparators (n = 32, 47% female, BMI 27.2 ± 0.8) were assessed for 36 h under fully residential conditions at baseline (1 mo presurgery) and at 3 and 12 mo postsurgery. Participants had ad libitum access to a personalized menu (n = 54 foods) based on a 6-macronutrient mix paradigm. Food preferences were assessed by the Leeds Food Preference Questionnaire. Body composition was measured by whole-body DXA. RESULTS In the comparator group, there was an increase in relative fat intake at 3 mo postsurgery; otherwise, no changes were observed in food intake or body composition. At 12 mo postsurgery, patients lost 27.7 ± 1.6% of initial body weight (P < 0.001). The decline in EI at 3 mo postsurgery (-44% from baseline, P < 0.001) was followed by a partial rebound at 12 mo (-18% from baseline), but at both times, dietary ED and relative macronutrient intake remained constant. The decline in EI was due to eating the same foods as consumed presurgery and by decreasing the size (g, MJ), but not the number, of eating occasions. In patients, reduction in explicit liking at 3 mo (-11.56 ± 4.67, P = 0.007) and implicit wanting at 3 (-15.75 ± 7.76, P = 0.01) and 12 mo (-15.18 ± 6.52, P = 0.022) for sweet foods were not matched by reduced intake of these foods. Patients with the greatest reduction in ED postsurgery reduced both EI and preference for sweet foods. CONCLUSIONS After GBP, patients continue to eat the same foods but in smaller amounts. These findings challenge prevailing views about the dynamics of food intake following GBP surgery. This trial was registered as clinicaltrials.gov as NCT03113305.
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Affiliation(s)
- M Barbara E Livingstone
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, United Kingdom.
| | - Tamsyn Redpath
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, United Kingdom
| | - Fathimath Naseer
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, United Kingdom
| | - Adele Boyd
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, United Kingdom
| | - Melanie Martin
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, United Kingdom
| | - Graham Finlayson
- School of Psychology, University of Leeds, Leeds, United Kingdom
| | - Alex D Miras
- Department of Metabolism, Reproduction and Digestion, Imperial College London, London, United Kingdom
| | - Zsolt Bodnar
- Department of Surgery, Letterkenny University Hospital, Donegal, Ireland
| | | | - Dimitri J Pournaras
- Department of Bariatric and Metabolic Surgery, North Bristol NHS Trust, Southmead Hospital, Bristol, United Kingdom
| | - Carel W le Roux
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Alan C Spector
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL, USA
| | - Ruth K Price
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, United Kingdom
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Sylivris A, Mesinovic J, Scott D, Jansons P. Body composition changes at 12 months following different surgical weight loss interventions in adults with obesity: A systematic review and meta-analysis of randomized control trials. Obes Rev 2022; 23:e13442. [PMID: 35257480 PMCID: PMC9286475 DOI: 10.1111/obr.13442] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 12/13/2022]
Abstract
To determine relative lean mass and fat mass changes in adults with obesity following surgical weight loss interventions, a systematic review and meta-analysis was conducted. The Cochrane Central Register of Controlled Trials, PubMed, Web of Science, EMBASE, and Scopus were screened for eligible studies. Inclusion criteria included randomized controlled trials (RCTs) performed in populations with obesity (body mass index ≥30 kg/m2 ) aged over 18 years, who underwent any type of bariatric surgery and reported body composition measures via dual-energy X-ray absorptiometry or bio-electrical impedance analysis. Authors conducted full text screening and determined that there were six RCTs eligible for inclusion, with data extracted at 12 months post-surgery. Meta-analysis revealed that, relative to gastric banding, Roux-en-Y gastric bypass (RYGB) led to greater total body mass loss (mean difference [MD]: -9.33 kg [95% CI: -12.10, -6.56]) and greater fat mass loss (MD: -8.86 kg [95% CI: -11.80, -5.93], but similar lean mass loss (MD: -0.55 kg [95% CI: -3.82, 2.71]. RYGB also led to similar changes in total body mass, fat mass, and lean mass compared with sleeve gastrectomy. RYGB results in greater 12-month weight and fat loss, but similar changes in lean mass, compared with gastric banding. Further RCTs comparing body composition changes following different bariatric surgery procedures are required.
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Affiliation(s)
- Amy Sylivris
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia
| | - Jakub Mesinovic
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia.,Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - David Scott
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia.,Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
| | - Paul Jansons
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia.,Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria, Australia
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15
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Ismaeil A, Gero D, Boyle CN, Alceste D, Taha O, Spector AC, Lutz TA, Bueter M. Early Postoperative Exposure to High-Fat Diet Does Not Increase Long-Term Weight Loss or Fat Avoidance After Roux-en-Y Gastric Bypass in Rats. Front Nutr 2022; 9:834854. [PMID: 35495960 PMCID: PMC9044042 DOI: 10.3389/fnut.2022.834854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/02/2022] [Indexed: 11/29/2022] Open
Abstract
Background Bariatric surgery alters food preferences in rats and reportedly decreases desire to consume high-fat high-sugar food in humans. The aim of this study was to investigate whether early post-operative exposure to high-fat food could increase body weight loss after Roux-en-Y gastric bypass (RYGB) by triggering fat avoidance. Methods Male Wistar rats underwent either RYGB (n = 15) or sham-operations (n = 16). Preoperatively a standardized 4-choice cafeteria diet [dietary options: low-fat/low-sugar (LFLS), low-fat/high-sugar (LFHS), high-fat/low-sugar (HFLS), high-fat/high-sugar (HFHS)] was offered. First, each option was available for 4 days, thereafter rats were offered the 4 options simultaneously for 3 days preoperatively. Post-surgery, 8 rats in the RYGB- and 8 in the sham-group were exposed to a high-fat content diet (Oatmeal + 30% lard, OM+L) for 10 days, while 7 RYGB rats and 8 sham-rats received OM alone. From the 11th postoperative day, the 4-choice cafeteria diet was reintroduced for 55-days. The intake of all available food items, macronutrients and body weight changes were monitored over 8 weeks. Main outcomes were long-term body-weight and daily change in relative caloric intake during the postoperative cafeteria period compared to the preoperative cafeteria. Results During the first 12 days of postoperative cafeteria access, RYGB-rats exposed to OM+L had a higher mean caloric intake per day than RYGB rats exposed to OM alone (Δ10 kCal, Padj = 0.004), but this difference between the RYGB groups disappeared thereafter. Consequently, in the last 33 days of the postoperative cafeteria diet, the mean body weight of the RYGB+OM+L group was higher compared to RYGB+OM (Δ51 g, Padj < 0.001). RYGB rats, independently from the nutritional intervention, presented a progressive decrease in daily consumption of calories from fat and increased their daily energy intake mainly from non-sugar carbohydrates. No such differences were detected in sham-operated controls exposed to low- or high fat postoperative interventions. Conclusion A progressive decrease in daily fat intake over time was observed after RYGB, independently from the nutritional intervention. This finding confirms that macronutrient preferences undergo progressive changes over time after RYGB and supports the role of ingestive adaptation and learning. Early postoperative exposure to high-fat food failed to accentuate fat avoidance and did not lead to superior weight loss in the long-term.
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Affiliation(s)
- Aiman Ismaeil
- Department of Surgery and Transplantation, University Hospital Zurich, Zurich, Switzerland
- Department of General Surgery, Aswan University Hospital, Aswan, Egypt
| | - Daniel Gero
- Department of Surgery and Transplantation, University Hospital Zurich, Zurich, Switzerland
| | - Christina N. Boyle
- Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland
| | - Daniela Alceste
- Department of Surgery and Transplantation, University Hospital Zurich, Zurich, Switzerland
| | - Osama Taha
- Department of Plastic Surgery, Assiut University Hospital, Asyut, Egypt
| | - Alan C. Spector
- Program in Neuroscience, Department of Psychology, Florida State University, Tallahassee, FL, United States
| | - Thomas A. Lutz
- Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland
| | - Marco Bueter
- Department of Surgery and Transplantation, University Hospital Zurich, Zurich, Switzerland
- *Correspondence: Marco Bueter,
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16
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Blonde GD, Mathes CM, Inui T, Hamel EA, Price RK, Livingstone MBE, Le Roux CW, Spector AC. Oromotor and somatic taste reactivity during sucrose meals reveals internal state and stimulus palatability after gastric bypass in rats. Am J Physiol Regul Integr Comp Physiol 2022; 322:R204-R218. [PMID: 35043683 PMCID: PMC8858674 DOI: 10.1152/ajpregu.00285.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/07/2022] [Accepted: 01/12/2022] [Indexed: 11/22/2022]
Abstract
After Roux-en-Y gastric bypass (RYGB), rats consume less high-energy foods and fluids, though whether this reflects a concomitant change in palatability remains unclear. By measuring behavior during intraorally delivered liquid meals across days (1 water, 8 sucrose sessions), we showed that RYGB rats (RYGB, n = 8/sex) consumed less 1.0 M sucrose than their sham surgery counterparts (SHAM, n = 8 males, n = 11 females) but displayed similarly high levels of ingestive taste reactivity responses at the start of infusions. Relative to water, both groups increased intake of sucrose, and ingestive responses were dominated by tongue protrusions rather than mouth movements. Thus, RYGB animals still found sucrose palatable despite consuming less than the SHAM group. As the intraoral infusion progressed but before meal termination, aversive behavior remained low and both RYGB and SHAM animals showed fewer ingestive responses, predominantly mouth movements as opposed to tongue protrusions. This shift in responsiveness unrelated to surgical manipulation suggests negative alliesthesia, or a decreased palatability, as rats approach satiation. Notably, only in RYGB rats, across sessions, there was a striking emergence of aversive behavior immediately after the sucrose meal. Thus, although lower intake in RYGB rats seems independent of the hedonic taste properties of sucrose, taste reactivity behavior in these animals immediately after termination of a liquid meal appears to be influenced by postoral events and reflects a state of nimiety or excessive consumption. Measurement of taste reactivity behaviors during an intraorally delivered meal represents a promising way to make inferences about internal state in nonverbal preclinical models.
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Affiliation(s)
- Ginger D Blonde
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida
| | - Clare M Mathes
- Department of Neuroscience, Baldwin Wallace University, Berea, Ohio
| | - Tadashi Inui
- Department of Oral Physiology, Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Elizabeth A Hamel
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida
| | - Ruth K Price
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | - M Barbara E Livingstone
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | - Carel W Le Roux
- Diabetes Complications Research Centre, Conway Institute, School of Medicine, University College Dublin, Dublin, Ireland
| | - Alan C Spector
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida
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17
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Guyot E, Nazare JA, Oustric P, Robert M, Disse E, Dougkas A, Iceta S. Food Reward after Bariatric Surgery and Weight Loss Outcomes: An Exploratory Study. Nutrients 2022; 14:nu14030449. [PMID: 35276808 PMCID: PMC8840022 DOI: 10.3390/nu14030449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/20/2022] Open
Abstract
Changes in food preferences after bariatric surgery may alter its effectiveness as a treatment for obesity. We aimed to compare food reward for a comprehensive variety of food categories between patients who received a sleeve gastrectomy (SG) or a Roux-en-Y gastric bypass (RYGB) and to explore whether food reward differs according to weight loss. In this cross-sectional exploratory study, food reward was assessed using the Leeds Food Preference Questionnaire (LFPQ) in patients at 6, 12, or 24 months after SG or RYGB. We assessed the liking and wanting of 11 food categories. Comparisons were done regarding the type of surgery and total weight loss (TWL; based on tertile distribution). Fifty-six patients (30 SG and 26 RYGB) were included (women: 70%; age: 44.0 (11.1) y). Regarding the type of surgery, scores were not significantly different between SG and RYGB, except for ‘non-dairy products—without color’ explicit liking (p = 0.04). Regarding TWL outcomes, explicit liking, explicit wanting, and implicit wanting, scores were significantly higher for good responders than low responders for ‘No meat—High fat’ (post-hoc corrected p-value: 0.04, 0.03, and 0.04, respectively). Together, our results failed to identify major differences in liking and wanting between the types of surgery and tended to indicate that higher weight loss might be related to a higher reward for high protein-content food. Rather focus only on palatable foods, future studies should also consider a broader range of food items, including protein reward.
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Affiliation(s)
- Erika Guyot
- Department of Endocrinology Diabetes and Nutrition, Integrated Center for Obesity, Hospices Civils de Lyon, Lyon-Sud Hospital, 69310 Pierre-Bénite, France; (E.G.); (E.D.)
- Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Laboratoire Centre Européen Nutrition et Santé (CENS), 69310 Pierre-Bénite, France;
- CarMeN, Unité INSERM 1060, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
- Institut Paul Bocuse Research Center, 69130 Lyon, France;
| | - Julie-Anne Nazare
- Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Laboratoire Centre Européen Nutrition et Santé (CENS), 69310 Pierre-Bénite, France;
- CarMeN, Unité INSERM 1060, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
| | - Pauline Oustric
- School of Psychology, University of Leeds, Leeds LS2 9JT, UK;
| | - Maud Robert
- Department of Digestive and Bariatric Surgery, Integrated Center for Obesity, Hospices Civils de Lyon, Hôpital Edouard Herriot, 69437 Lyon, France;
| | - Emmanuel Disse
- Department of Endocrinology Diabetes and Nutrition, Integrated Center for Obesity, Hospices Civils de Lyon, Lyon-Sud Hospital, 69310 Pierre-Bénite, France; (E.G.); (E.D.)
- Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Laboratoire Centre Européen Nutrition et Santé (CENS), 69310 Pierre-Bénite, France;
- CarMeN, Unité INSERM 1060, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
| | | | - Sylvain Iceta
- Department of Endocrinology Diabetes and Nutrition, Integrated Center for Obesity, Hospices Civils de Lyon, Lyon-Sud Hospital, 69310 Pierre-Bénite, France; (E.G.); (E.D.)
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, QC G1V 4G5, Canada
- Correspondence: ; Tel.: +1-(418)-656-8711
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Akalestou E, Miras AD, Rutter GA, le Roux CW. Mechanisms of Weight Loss After Obesity Surgery. Endocr Rev 2022; 43:19-34. [PMID: 34363458 PMCID: PMC8755990 DOI: 10.1210/endrev/bnab022] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Indexed: 02/07/2023]
Abstract
Obesity surgery remains the most effective treatment for obesity and its complications. Weight loss was initially attributed to decreased energy absorption from the gut but has since been linked to reduced appetitive behavior and potentially increased energy expenditure. Implicated mechanisms associating rearrangement of the gastrointestinal tract with these metabolic outcomes include central appetite control, release of gut peptides, change in microbiota, and bile acids. However, the exact combination and timing of signals remain largely unknown. In this review, we survey recent research investigating these mechanisms, and seek to provide insights on unanswered questions over how weight loss is achieved following bariatric surgery which may eventually lead to safer, nonsurgical weight-loss interventions or combinations of medications with surgery.
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Affiliation(s)
- Elina Akalestou
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Alexander D Miras
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Guy A Rutter
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK.,Lee Kong Chian Imperial Medical School, Nanyang Technological University, Singapore.,University of Montreal Hospital Research Centre, Montreal, QC, Canada
| | - Carel W le Roux
- Diabetes Complications Research Centre, University College Dublin, Ireland.,Diabetes Research Group, School of Biomedical Science, Ulster University, Belfast, UK
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Roux-en-Y Gastric Bypass and Caloric Restriction but Not Gut Hormone-Based Treatments Profoundly Impact the Hypothalamic Transcriptome in Obese Rats. Nutrients 2021; 14:nu14010116. [PMID: 35010991 PMCID: PMC8746874 DOI: 10.3390/nu14010116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/23/2021] [Accepted: 12/24/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The hypothalamus is an important brain region for the regulation of energy balance. Roux-en-Y gastric bypass (RYGB) surgery and gut hormone-based treatments are known to reduce body weight, but their effects on hypothalamic gene expression and signaling pathways are poorly studied. METHODS Diet-induced obese male Wistar rats were randomized into the following groups: RYGB, sham operation, sham + body weight-matched (BWM) to the RYGB group, osmotic minipump delivering PYY3-36 (0.1 mg/kg/day), liraglutide s.c. (0.4 mg/kg/day), PYY3-36 + liraglutide, and saline. All groups (except BWM) were kept on a free choice of high- and low-fat diets. Four weeks after interventions, hypothalami were collected for RNA sequencing. RESULTS While rats in the RYGB, BWM, and PYY3-36 + liraglutide groups had comparable reductions in body weight, only RYGB and BWM treatment had a major impact on hypothalamic gene expression. In these groups, hypothalamic leptin receptor expression as well as the JAK-STAT, PI3K-Akt, and AMPK signaling pathways were upregulated. No significant changes could be detected in PYY3-36 + liraglutide-, liraglutide-, and PYY-treated groups. CONCLUSIONS Despite causing similar body weight changes compared to RYGB and BWM, PYY3-36 + liraglutide treatment does not impact hypothalamic gene expression. Whether this striking difference is favorable or unfavorable to metabolic health in the long term requires further investigation.
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20
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Redpath T, Naseer F, Price RK, Boyd A, Martin M, le Roux CW, Spector AC, Livingstone MBE. Evaluation of the impact of gastric bypass surgery on eating behaviour using objective methodologies under residential conditions: Rationale and study protocol. Contemp Clin Trials Commun 2021; 24:100846. [PMID: 34646959 PMCID: PMC8497851 DOI: 10.1016/j.conctc.2021.100846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/17/2021] [Accepted: 09/06/2021] [Indexed: 11/17/2022] Open
Abstract
Gastric bypass surgery leads to significant and sustained weight loss and a reduction in associated health risks in individuals with severe obesity. While reduced energy intake (EI) is the primary driver of weight loss following surgery, the underlying mechanisms accounting for this energy deficit are not well understood. The evidence base has been constrained by a lack of fit-for-purpose methodology in assessing food intake coupled with follow-up studies that are relatively short-term. This paper describes the underlying rationale and protocol for an observational, fully residential study using covert, objective methodology to evaluate changes in 24-hr food intake in patients (n = 31) at 1-month pre-surgery and 3-, 12- and 24-months post-surgery, compared to weight-stable controls (n = 32). The main study endpoints included change in EI, macronutrient intake, food preferences, and eating behaviours (speed, frequency, and duration of eating). Other physiological changes that may influence EI and weight regulation including changes in body composition, circulating appetite hormones, resting metabolic rate, total energy expenditure and gastrointestinal symptoms were also evaluated. Understanding which mechanisms contribute to a reduction in EI and weight loss post-surgery could potentially help to identify those individuals who are most likely to benefit from gastric bypass surgery as well as those that may need more targeted intervention to optimise their weight loss post-surgery. Furthermore, clarification of these mechanisms may also inform targeted approaches for non-surgical treatments of obesity.
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Affiliation(s)
- Tamsyn Redpath
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, BT52 1SA, United Kingdom
| | - Fathimath Naseer
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, BT52 1SA, United Kingdom
| | - Ruth Karen Price
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, BT52 1SA, United Kingdom
| | - Adele Boyd
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, BT52 1SA, United Kingdom
| | - Melanie Martin
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, BT52 1SA, United Kingdom
| | - Carel Wynand le Roux
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Alan C. Spector
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL, USA
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21
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Kapoor N, al Najim W, Menezes C, Price RK, O’Boyle C, Bodnar Z, Spector AC, Docherty NG, le Roux CW. A Comparison of Total Food Intake at a Personalised Buffet in People with Obesity, before and 24 Months after Roux-en-Y-Gastric Bypass Surgery. Nutrients 2021; 13:3873. [PMID: 34836130 PMCID: PMC8625776 DOI: 10.3390/nu13113873] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 02/07/2023] Open
Abstract
Long-term reductions in the quantity of food consumed, and a shift in intake away from energy dense foods have both been implicated in the potent bariatric effects of Roux-en-Y gastric bypass (RYGB) surgery. We hypothesised that relative to pre-operative assessment, a stereotypical shift to lower intake would be observed at a personalised ad libitum buffet meal 24 months after RYGB, driven in part by decreased selection of high energy density items. At pre-operative baseline, participants (n = 14) rated their preference for 72 individual food items, each of these mapping to one of six categories encompassing high and low-fat choices in combination with sugar, complex carbohydrate or and protein. An 18-item buffet meal was created for each participant based on expressed preferences. Overall energy intake was reduced on average by 60% at the 24-month buffet meal. Reductions in intake were seen across all six food categories. Decreases in the overall intake of all individual macronutrient groups were marked and were generally proportional to reductions in total caloric intake. Patterns of preference and intake, both at baseline and at follow-up appear more idiosyncratic than has been previously suggested by verbal reporting. The data emphasise the consistency with which reductions in ad libitum food intake occur as a sequel of RYGB, this being maintained in the setting of a self-selected ad libitum buffet meal. Exploratory analysis of the data also supports prior reports of a possible relative increase in the proportional intake of protein after RYGB.
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Affiliation(s)
- Natasha Kapoor
- Diabetes Complications Research Centre, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland; (N.K.); (W.a.N.); (C.M.); (C.W.l.R.)
| | - Werd al Najim
- Diabetes Complications Research Centre, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland; (N.K.); (W.a.N.); (C.M.); (C.W.l.R.)
| | - Camilo Menezes
- Diabetes Complications Research Centre, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland; (N.K.); (W.a.N.); (C.M.); (C.W.l.R.)
| | - Ruth K Price
- The Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine BT52 1SA, UK;
| | - Colm O’Boyle
- Department of Surgery, Bon Secours Hospital, T12 DV56 Cork, Ireland;
| | - Zsolt Bodnar
- Department of Surgery, Letterkenny University Hospital, F92 AE81 Letterkenny, Ireland;
| | - Alan C Spector
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL 32306, USA;
| | - Neil G Docherty
- Diabetes Complications Research Centre, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland; (N.K.); (W.a.N.); (C.M.); (C.W.l.R.)
| | - Carel W le Roux
- Diabetes Complications Research Centre, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland; (N.K.); (W.a.N.); (C.M.); (C.W.l.R.)
- Centre for Diabetes, Ulster University, Coleraine BT52 1SA, UK
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22
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Blonde GD, Price RK, le Roux CW, Spector AC. Meal Patterns and Food Choices of Female Rats Fed a Cafeteria-Style Diet Are Altered by Gastric Bypass Surgery. Nutrients 2021; 13:3856. [PMID: 34836110 PMCID: PMC8623594 DOI: 10.3390/nu13113856] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/21/2021] [Accepted: 10/26/2021] [Indexed: 12/28/2022] Open
Abstract
After Roux-en-Y gastric bypass surgery (RYGB), rats tend to reduce consumption of high-sugar and/or high-fat foods over time. Here, we sought to investigate the behavioral mechanisms underlying these intake outcomes. Adult female rats were provided a cafeteria diet comprised of five palatable foodstuffs varying in sugar and fat content and intake was monitored continuously. Rats were then assigned to either RYGB, or one of two control (CTL) groups: sham surgery or a nonsurgical control group receiving the same prophylactic iron treatments as RYGB rats. Post-sur-gically, all rats consumed a large first meal of the cafeteria diet. After the first meal, RYGB rats reduced intake primarily by decreasing the meal sizes relative to CTL rats, ate meals more slowly, and displayed altered nycthemeral timing of intake yielding more daytime meals and fewer nighttime meals. Collectively, these meal patterns indicate that despite being motivated to consume a cafeteria diet after RYGB, rats rapidly learn to modify eating behaviors to consume foods more slowly across the entire day. RYGB rats also altered food preferences, but more slowly than the changes in meal patterns, and ate proportionally more energy from complex carbohydrates and protein and proportionally less fat. Overall, the pattern of results suggests that after RYGB rats quickly learn to adjust their size, eating rate, and distribution of meals without altering meal number and to shift their macronutrient intake away from fat; these changes appear to be more related to postingestive events than to a fundamental decline in the palatability of food choices.
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Affiliation(s)
- Ginger D. Blonde
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL 32306, USA;
| | - Ruth K. Price
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine BT52 1SA, UK;
| | - Carel W. le Roux
- Diabetes Complications Research Centre, Conway Institute, School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland;
| | - Alan C. Spector
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, FL 32306, USA;
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23
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Nielsen MS, Ritz C, Chenchar A, Bredie WLP, Gillum MP, Sjödin A. Does FGF21 Mediate the Potential Decrease in Sweet Food Intake and Preference Following Bariatric Surgery? Nutrients 2021; 13:nu13113840. [PMID: 34836096 PMCID: PMC8624965 DOI: 10.3390/nu13113840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 11/17/2022] Open
Abstract
The liver-derived hormone fibroblast growth factor 21 (FGF21) has recently been linked to preference for sweet-tasting food. We hypothesized, that surgery-induced changes in FGF21 could mediate the reduction in sweet food intake and preference following bariatric surgery. Forty participants (35 females) with severe obesity (BMI ≥ 35 kg/m2) scheduled for roux-en-y gastric bypass (n = 30) or sleeve gastrectomy (n = 10) were included. Pre- and postprandial responses of intact plasma FGF21 as well as intake of sweet-tasting food assessed at a buffet meal test, the hedonic evaluation of sweet taste assessed using an apple juice with added sucrose and visual analog scales, and sweet taste sensitivity were assessed before and 6 months after bariatric surgery. In a cross-sectional analysis pre-surgery, pre- and postprandial intact FGF21 levels were negatively associated with the hedonic evaluation of a high-sucrose juice sample (p = 0.03 and p = 0.02). However, no changes in pre- (p = 0.24) or postprandial intact FGF21 levels were found 6 months after surgery (p = 0.11), and individual pre- to postoperative changes in pre- and postprandial intact FGF21 levels were not found to be associated with changes in intake of sweet foods, the hedonic evaluation of sweet taste or sweet taste sensitivity (all p ≥ 0.10). In conclusion, we were not able to show an effect of bariatric surgery on circulating FGF21, and individual postoperative changes in FGF21 were not found to mediate an effect of surgery on sweet food intake and preference.
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Affiliation(s)
- Mette S. Nielsen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (M.S.N.); (A.C.); (M.P.G.)
| | - Christian Ritz
- National Institute of Public Health, University of Southern Denmark, 1455 Copenhagen, Denmark;
| | - Anne Chenchar
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (M.S.N.); (A.C.); (M.P.G.)
- School of Pharmacy, College of Health Science, University of Wyoming, Laramie, WY 82071, USA
| | - Wender L. P. Bredie
- Department of Food Science, Faculty of Science, University of Copenhagen, 1958 Frederiksberg, Denmark;
| | - Matthew P. Gillum
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (M.S.N.); (A.C.); (M.P.G.)
| | - Anders Sjödin
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, 1958 Frederiksberg, Denmark
- Correspondence:
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24
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Norouzian Ostad A, Barghchi H, Jangjoo A, Ranjbar G, Rezvani R, Bahrami LS, Goshayeshi L, Khadem-Rezaiyan M, Nematy M. Macro- and Micro-nutrient Intake Adequacy in Gastric Bypass Patients after 24 Months: a Cross-sectional Study. Clin Nutr Res 2021; 10:341-352. [PMID: 34796138 PMCID: PMC8575647 DOI: 10.7762/cnr.2021.10.4.341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 01/19/2023] Open
Abstract
Decreased food intake is an effective mechanism for gastric bypass surgery (GBS) for successful weight loss. This cross-sectional study aimed to assess dietary intake, micro-and macro-nutrients in the patients undergoing GBS and determine the possible associations with weight changes. We assessed anthropometric indices and food intake at 24 month-post gastric bypass surgery. Dietary data was evaluated using three-day food records. After the 24 months of surgery, among 35 patients (mean age: 43.5 ± 11.2 years; 82.85% females), with the mean body mass index (BMI) of 30.5 ± 4.5 kg/m2, 17 cases were < 50% of their excess weight. The average daily calorie intake was 1,733 ± 630 kcal, with 14.88% of calories from protein. Consumption amounts of protein (0.82 ± 0.27 g/kg of the current weight), as well as fiber, and some micro-nutrients (vitamin B9, E, K, B5, and D3) were lower than recommended amounts. Patients were classified into three groups based on their success in weight loss after surgery. Calorie intake was not significantly different between groups, but successful groups consumed considerably more protein and less carbohydrate than the unsuccessful group (p < 0.05). Based on our findings, the patients undergoing GBS had inadequate macro- and micro-nutrient intake after 24 months. However, protein intake can affect patients' success in achieving better weight loss. Long-term cohort and clinical studies need to be conducted to comprehend this process further.
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Affiliation(s)
- Andisheh Norouzian Ostad
- Department of Nutritional Sciences, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
| | - Hanieh Barghchi
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
| | - Ali Jangjoo
- Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
| | - Golnaz Ranjbar
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
| | - Reza Rezvani
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
| | - Leila Sadat Bahrami
- Department of Nutritional Sciences, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
| | - Ladan Goshayeshi
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran.,Gastroenterology and Hepatology Research Center, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
| | - Majid Khadem-Rezaiyan
- Department of Community Medicine and Public Health, Faculty of medicine, Mashhad university of Medical Sciences, Mashhad 91779-48564, Iran
| | - Mohsen Nematy
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad 91779-48564, Iran
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25
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Metabolic profiles, energy expenditures, and body compositions of the weight regain versus sustained weight loss patients who underwent Roux-en-Y gastric bypass. Surg Obes Relat Dis 2021; 17:2015-2025. [PMID: 34635422 DOI: 10.1016/j.soard.2021.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/11/2021] [Accepted: 09/06/2021] [Indexed: 01/02/2023]
Abstract
BACKGROUND Weight regain (WR) has been an emerging problem after Roux-en Y gastric bypass (RYGB) and little is known about the mechanisms of WR after RYGB. OBJECTIVE To evaluate the mechanisms of WR after RYGB through the postprandial gut hormones response, particularly glucagon-like peptide-1 (GLP-1), which regulates appetite control, energy expenditure, body composition, physical activities, dietary intake, and psychological factors. SETTING Duke University Medical Center, Durham, North Carolina. METHODS A cross sectional study of 34 patients who underwent RYGB at least 2 years and achieved ≥50% of excess weight loss at 1year was conducted. The subjects were categorized into WR group or sustained weight loss group, based upon whether their WR was ≥15% of postoperative lowest weight. RESULTS The WR group had less augmented postprandial GLP-1 response but exaggerated hyperinsulinemia. Postprandial peptide YY, ghrelin, and glucose were not different between group. Patients who regained weight required less weight-adjusted energy expenditure and had more percentage body fat and less percentage lean mass. The caloric intake and diet composition were comparable between groups; however, the WR group had higher depression scores, binge eating scales, and hunger rating and spent significantly less time on vigorous exercise. CONCLUSIONS The mechanisms of WR in patients who were initially successful after RYGB are complex and involved not only the role of postprandial gut hormone response but are also related to energy expenditure adaptation and body composition changes. Moreover, food preference and physical activity may play roles in weight control after bariatric surgery. Further prospective controlled trial is needed to explore the mechanisms of WR.
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26
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Guyot E, Dougkas A, Nazare JA, Bagot S, Disse E, Iceta S. A systematic review and meta-analyses of food preference modifications after bariatric surgery. Obes Rev 2021; 22:e13315. [PMID: 34312976 DOI: 10.1111/obr.13315] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/14/2021] [Accepted: 06/14/2021] [Indexed: 12/12/2022]
Abstract
This systematic review and meta-analyses aimed to synthesize evidence of the link between bariatric surgery and changes in food preferences, considering the method of assessment. MEDLINE, Cochrane Library, Web of Science, Cinahl, PsychINFO, ProQuest, and Open grey were searched incorporating two blocks of terms ("Intervention" and "Food Preferences"). Interventional or observational studies involving patients (BMI ≥ 35 kg m-2 ) with sleeve gastrectomy (SG) or Roux-en-Y Gastric Bypass (RYGB) and a control group were included. Meta-analyses were performed comparing the standardized daily mean percentage energy from proteins, carbohydrates, and lipids between preoperative and postoperative patients. Fifty-seven studies concerning 2,271 patients with RYGB and 903 patients with SG met the inclusion criteria, of which 24 were eligible for meta-analysis. Despite a total reduction in macronutrient intakes, the meta-analyses revealed a postoperative increase in percentage energy from proteins at 12 months (0.24, 95% CI: 0.03, 0.46, {I2 } = 73%) and a decrease in percentage energy from fat at 1 month (-0.47, 95% CI: 0.86, 0.09, {I2 } = 72%), up to 24 months (-0.20, 95% CI: -0.31, 0.08, {I2 } = 0%). In conclusion, the present systematic review and meta-analyses showed changes of food preferences in terms of macronutrient, food selection and, overall food appreciation up to 5 years following bariatric surgery.
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Affiliation(s)
- Erika Guyot
- Centre Européen Nutrition et Santé (CENS), Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Pierre-Bénite, France.,Institut Paul Bocuse Research Center, Ecully, France
| | | | - Julie-Anne Nazare
- Centre Européen Nutrition et Santé (CENS), Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Pierre-Bénite, France.,Laboratoire CarMeN, Université Claude Bernard Lyon 1, Pierre-Bénite, France
| | - Sarah Bagot
- Centre Européen Nutrition et Santé (CENS), Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Pierre-Bénite, France.,Institut Paul Bocuse Research Center, Ecully, France
| | - Emmanuel Disse
- Centre Européen Nutrition et Santé (CENS), Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Pierre-Bénite, France.,Laboratoire CarMeN, Université Claude Bernard Lyon 1, Pierre-Bénite, France.,Department of Endocrinology, Diabetes and Nutrition, Integrated Center for Obesity, Hospices Civils de Lyon, Lyon-Sud Hospital, Pierre-Bénite, France
| | - Sylvain Iceta
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec-Université Laval, Quebec, Quebec, Canada
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27
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Legault M, Leblanc V, Marchand GB, Iceta S, Drolet-Labelle V, Lemieux S, Lamarche B, Michaud A. Evaluation of Dietary Assessment Tools Used in Bariatric Population. Nutrients 2021; 13:nu13072250. [PMID: 34210110 PMCID: PMC8308448 DOI: 10.3390/nu13072250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/24/2021] [Accepted: 06/28/2021] [Indexed: 01/23/2023] Open
Abstract
Severe obesity is associated with major health issues and bariatric surgery is still the only treatment to offer significant and durable weight loss. Assessment of dietary intakes is an important component of the bariatric surgery process. Objective: To document the dietary assessment tools that have been used with patients targeted for bariatric surgery and patients who had bariatric surgery and explore the extent to which these tools have been validated. Methods: A literature search was conducted to identify studies that used a dietary assessment tool with patients targeted for bariatric surgery or who had bariatric surgery. Results: 108 studies were included. Among all studies included, 27 used a dietary assessment tool that had been validated either as part of the study per se (n = 11) or in a previous study (n = 16). Every tool validated per se in the cited studies was validated among a bariatric population, while none of the tools validated in previous studies were validated in this population. Conclusion: Few studies in bariatric populations used a dietary assessment tool that had been validated in this population. Additional studies are needed to develop valid and robust dietary assessment tools to improve the quality of nutritional studies among bariatric patients.
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Affiliation(s)
- Marianne Legault
- Quebec Heart and Lung Institute Research Centre, Université Laval, Québec City, QC G1V 4G5, Canada; (M.L.); (S.I.); (V.D.-L.)
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
| | - Vicky Leblanc
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
| | - Geneviève B. Marchand
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
| | - Sylvain Iceta
- Quebec Heart and Lung Institute Research Centre, Université Laval, Québec City, QC G1V 4G5, Canada; (M.L.); (S.I.); (V.D.-L.)
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
| | - Virginie Drolet-Labelle
- Quebec Heart and Lung Institute Research Centre, Université Laval, Québec City, QC G1V 4G5, Canada; (M.L.); (S.I.); (V.D.-L.)
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
| | - Simone Lemieux
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
| | - Benoît Lamarche
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
| | - Andréanne Michaud
- Quebec Heart and Lung Institute Research Centre, Université Laval, Québec City, QC G1V 4G5, Canada; (M.L.); (S.I.); (V.D.-L.)
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC G1V 0A6, Canada; (V.L.); (G.B.M.); (S.L.); (B.L.)
- Correspondence:
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28
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Redpath TL, Livingstone MBE, Dunne AA, Boyd A, le Roux CW, Spector AC, Price RK. Methodological issues in assessing change in dietary intake and appetite following gastric bypass surgery: A systematic review. Obes Rev 2021; 22:e13202. [PMID: 33527664 PMCID: PMC8244068 DOI: 10.1111/obr.13202] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 11/20/2020] [Accepted: 12/13/2020] [Indexed: 12/23/2022]
Abstract
Gastric bypass surgery is an effective long-term treatment for individuals with severe obesity. Changes in appetite, dietary intake, and food preferences have all been postulated to contribute to postoperative body weight regulation, however, findings are inconsistent. The aim of this systematic review was to evaluate the current literature on changes in dietary intake and appetite following gastric bypass surgery, in the context of the methodology used and the analysis, interpretation, and presentation of results. Four databases were systematically searched with terms related to "gastric bypass surgery," "appetite," and "dietary intake," and 49 papers (n = 2384 patients after gastric bypass) were eligible for inclusion. The evidence indicated that only a reduction in overall energy intake and an increase in postprandial satiety are maintained beyond 6-month post-surgery, whereas relative macronutrient intake and premeal hunger remain unchanged. However, available data were limited by inconsistencies in the methods, analysis, presentation, and interpretation of results. In particular, there was a reliance on data collected by subjective methods with minimal acknowledgment of the limitations, such as misreporting of food intake. There is a need for further work employing objective measurement of appetite and dietary intake following gastric bypass surgery to determine how these mechanisms may contribute to weight regulation in the longer term.
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Affiliation(s)
- Tamsyn L Redpath
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, UK
| | | | - Aoibheann A Dunne
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, UK
| | - Adele Boyd
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, UK
| | - Carel W le Roux
- Diabetes Complications Research Centre, University College Dublin, Dublin, Ireland
| | - Alan C Spector
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida, USA
| | - Ruth K Price
- Nutrition Innovation Centre for Food and Health, Ulster University, Coleraine, UK
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29
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Zarshenas N, Tapsell LC, Neale EP, Batterham M, Talbot ML. The Relationship Between Bariatric Surgery and Diet Quality: a Systematic Review. Obes Surg 2021; 30:1768-1792. [PMID: 31940138 DOI: 10.1007/s11695-020-04392-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Bariatric surgery is currently the most effective treatment for morbid obesity. These procedures change the gastrointestinal system with the aim of reducing dietary intake. Improving diet quality is essential in maintaining nutritional health and achieving long-term benefits from the surgery. The aim of this systematic review was to examine the relationship between bariatric surgery and diet quality at least 1 year after surgery. METHODS A systematic search of five databases was conducted. Studies were included that reported diet quality, eating pattern, or quality of eating in adult patients who had undergone laparoscopic-adjusted gastric banding (LAGB), Roux-en-Y gastric bypass (RYGB), and sleeve gastrectomy (SG) procedures. Data was extracted to determine the relationship between having had bariatric surgery and subsequent diet quality. RESULTS A total of 34 study articles (described in 36 articles) met the inclusion criteria. The majority of studies were observational in nature and showed a reduction in energy intake following surgery, as well as inadequate intakes of micronutrients and protein, and an excessive intake of fats. There was evidence of nutrient imbalances, suboptimal compliance with multivitamin and mineral supplementation, and limited follow-up of patients. CONCLUSION The current evidence base suggests that despite being effective in reducing energy intake, bariatric surgery can result in unbalanced diets, inadequate micronutrient and protein intakes, and excessive intakes of fats. In combination with suboptimal adherence to multivitamin and mineral supplementation, this may contribute to nutritional deficiencies and weight regain. There is a need for high-quality nutrition studies, to identify optimal dietary compositions following bariatric surgery.
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Affiliation(s)
- Nazy Zarshenas
- School of Medicine, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, NSW, Australia. .,Shore Surgical, 156-158 Pacific Highway, Greenwich, NSW, 2065, Australia.
| | - Linda Clare Tapsell
- School of Medicine, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, NSW, Australia
| | - Elizabeth Phillipa Neale
- School of Medicine, Faculty of Science Medicine and Health, University of Wollongong, Wollongong, NSW, Australia
| | - Marijka Batterham
- School of Mathematics and Applied Statistics, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong, NSW, Australia
| | - Michael Leonard Talbot
- Upper Gastrointestinal Surgery, St George Private Hospital, Kogarah, Sydney, NSW, Australia
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Nielsen MS, Christensen BJ, Ritz C, Holm L, Lunn S, Tækker L, Schmidt JB, Bredie WLP, Wewer Albrechtsen NJ, Holst JJ, Hilbert A, le Roux CW, Sjödin A. Factors Associated with Favorable Changes in Food Preferences After Bariatric Surgery. Obes Surg 2021; 31:3514-3524. [PMID: 33786744 DOI: 10.1007/s11695-021-05374-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 03/12/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023]
Abstract
PURPOSE Bariatric surgery may shift food preferences towards less energy-dense foods. Eating behavior is multifactorial, and the mechanisms driving changes in food preferences could be a combination of a physiological response to surgery and social and psychological factors. This exploratory study aimed to identify potential factors explaining the variation in changes in food preferences after bariatric surgery. MATERIALS AND METHODS Physiological, social, and psychological data were collected before, 6 weeks or 6 months after surgery. All variables were analyzed in combination using LASSO regression to explain the variation in changes in energy density at an ad libitum buffet meal 6 months after bariatric surgery (n=39). RESULTS The following factors explained 69% of the variation in changes in food preferences after surgery and were associated with more favorable changes in food preferences (i.e., a larger decrease in energy density): female gender, increased secretion of glicentin, a larger decrease in the hedonic rating of sweet and fat and a fatty cocoa drink, a lower number of recent life crises, a low degree of social eating pressure, fulfilling the diagnostic criteria for binge eating disorder, less effort needed to obtain preoperative weight loss, a smaller household composition, a lower degree of self-efficacy and a higher degree of depression, nutritional regime competence, and psychosocial risk level. CONCLUSION Factors explaining the variation in altered food preferences after bariatric surgery not only include a physiological response to surgery but also social and psychological factors.
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Affiliation(s)
- Mette S Nielsen
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark.
- The Danish Diabetes Academy, Odense University Hospital, Odense, Denmark.
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Bodil J Christensen
- Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
- National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Christian Ritz
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - Lotte Holm
- Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - Susanne Lunn
- Department of Psychology, Faculty of Social Science, University of Copenhagen, Copenhagen, Denmark
| | - Louise Tækker
- Department of Psychology, Faculty of Social Science, University of Copenhagen, Copenhagen, Denmark
| | - Julie Berg Schmidt
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - Wender L P Bredie
- Department of Food Science, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
| | - Nicolai J Wewer Albrechtsen
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens J Holst
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anja Hilbert
- Integrated Research and Treatment Center AdiposityDiseases, Behavioral Medicine Research Unit, Department of Psychosomatic Medicine and Psychotherapy, University of Leipzig Medical Center, Leipzig, Germany
| | - Carel W le Roux
- Investigative Science, Imperial College London, London, UK
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Anders Sjödin
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark
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Pinto SL, Juvanhol LL, Bressan J. Increase in Protein Intake After 3 Months of RYGB Is an Independent Predictor for the Remission of Obesity in the First Year of Surgery. Obes Surg 2020; 29:3780-3785. [PMID: 31376133 DOI: 10.1007/s11695-019-04124-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Although bariatric surgery promotes dietary changes, many questions regarding their effect on weight loss remain unanswered. OBJECTIVE The aim of this study was to evaluate changes in dietary intake and predictive factors of obesity remission in the first 12 months after RYGB. METHODS Fifty-one patients (mean 39.34 ± 9.38 years, 68.7% women) who underwent RYGB were included in this study. Dietary intake was evaluated through a 24-h dietary recall and subsequently classified by NOVA, macronutrients and calories. The predictive factors for obesity remission within 12 months after RYGB were evaluated by Cox regression. RESULTS At baseline, 62.7% of the patients presented severe obesity; mean excess weight loss was greater than 80% after 1 year of surgery and about 70% of the patients were no longer diagnosed with obesity. An increase in percentage of calories from protein was observed at 3 and 12 months after surgery. The caloric contribution of ultra-processed foods was low at 3 months after surgery while that of unprocessed or minimally processed foods was high at 3 and 12 months after surgery. From the Cox regression analysis, preoperative BMI (HR, 0.78; 95% CI, 0.69-0.88) and age (HR, 0.94; 95% CI, 0.89-0.99) showed an inverse association with obesity remission. Also, Δ protein (at 3 months-baseline) showed a positive association with obesity remission (HR, 1.06; 95% CI, 1.01-1.12). CONCLUSION Lower preoperative BMI, lower age, and higher protein intake at 3 months after surgery may favor remission of obesity in up to 12 months compared with baseline.
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Affiliation(s)
- Sônia Lopes Pinto
- Nutrition Course, Federal University of Tocantins, Quadra 109 North, NS-15 Avenue, ALCNO-14, Block Bala2, North Director Plan, Palmas, Tocantins, 77001-090, Brazil. .,Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
| | - Leidjaira Lopes Juvanhol
- Department of Nutrition and Health, Federal University of Viçosa, University Campus, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Josefina Bressan
- Department of Nutrition and Health, Federal University of Viçosa, University Campus, Viçosa, Minas Gerais, 36570-900, Brazil
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Hyde KM, Blonde GD, Bueter M, le Roux CW, Spector AC. Gastric bypass in female rats lowers concentrated sugar solution intake and preference without affecting brief-access licking after long-term sugar exposure. Am J Physiol Regul Integr Comp Physiol 2020; 318:R870-R885. [PMID: 32083966 DOI: 10.1152/ajpregu.00240.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In rodents, Roux-en-Y gastric bypass (RYGB) decreases intake of, and preference for, foods or fluids that are high in sugar. Whether these surgically induced changes are due to decreases in the palatability of sugar stimuli is controversial. We used RYGB and sham-operated (SHAM) female rats to test the influence of prolonged ingestive experience with sugar solutions on the motivational potency of these stimuli to drive licking in brief-access (BA) tests. In experiment 1, RYGB attenuated intake of, and caloric preference for, 0.3 M sucrose during five consecutive, 46-h two-bottle tests (TBTs; sucrose). A second series of TBTs (5 consecutive, 46-h tests) with 1.0 M sucrose revealed similar results, except fluid preference for 1.0 M sucrose also significantly decreased. Before, between, and after the two series of TBTs, two sessions of BA tests (30 min; 10-s trials) with an array of sucrose concentrations (0 and 0.01-1.0 M) were conducted. Concentration-dependent licking and overall trial initiation did not differ between surgical groups in any test. In a similar experimental design in a second cohort of female rats, 0.6 and 2.0 M glucose (isocaloric with sucrose concentrations in experiment 1) were used in the TBTs; 0 and 0.06-2.0 M glucose were used in the BA tests. Outcomes were similar to those for experiment 1, except RYGB rats initiated fewer trials during the BA tests. Although RYGB profoundly affected intake of, and caloric preference for, sugar solutions and, with high concentrations, fluid preference, RYGB never influenced the motivational potency of sucrose or glucose to drive concentration-dependent licking in BA tests.
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Affiliation(s)
- Kellie M Hyde
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida
| | - Ginger D Blonde
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida
| | - Marco Bueter
- Division of Visceral and Transplantation Surgery, Department of Surgery, University of Zürich, Zürich, Switzerland
| | - Carel W le Roux
- Diabetes Complications Research Centre, Conway Institute, School of Medicine, University College Dublin, Dublin, Ireland
| | - Alan C Spector
- Department of Psychology and Program in Neuroscience, Florida State University, Tallahassee, Florida
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Lopes Pinto S, da Silva DCG, Bressan J. Absolute and Relative Changes in Ultra-processed Food Consumption and Dietary Antioxidants in Severely Obese Adults 3 Months After Roux-en-Y Gastric Bypass. Obes Surg 2020; 29:1810-1815. [PMID: 30719649 DOI: 10.1007/s11695-019-03749-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
INTRODUCTION Patients that undergo Roux-en-Y gastric bypass (RYGB) experience a dramatic change in food consumption; however, it is unknown whether food consumption changes in relation to the level of food processing. OBJECTIVE The aim of this work was to evaluate the relationship between ultra-processed food intake, dietary antioxidant capacity, and cardiometabolic risk factors in patients who underwent RYGB. METHODS This study included 58 obese patients who underwent RYGB bariatric surgery. Data collection was done pre-operatively and at 3 months post-surgery. The foods consumed were documented using a 3-day 24-h dietary recall, and food intake was classified based on NOVA and dietary total antioxidant capacity (TAC). Anthropometric and biochemical data as well as information on body composition were also collected. Metabolic syndrome (MS) was classified in accordance with the International Diabetes Federation. RESULTS Ultra-processed foods amounted to 27.2% and 19.7% of the total calories consumed during pre- and post-surgery periods, respectively. Regarding post-surgery, the caloric contribution of unprocessed or minimally processed foods increased, from 55.7 to 70.2% (p = 0.000). The TAC of foods consumed is inversely proportional to that of ultra-processed foods. Obvious changes were observed in all the anthropometric variables, lipid profile, glycemia, insulin resistance, and MS. CONCLUSION Our results indicate that bariatric surgery is able to promote improvement in the diet quality of patients, reducing the consumption of ultra-processed foods and increasing the intake of unprocessed foods. The TAC of foods consumed is inversely proportional to that of ultra-processed ones.
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Affiliation(s)
- Sônia Lopes Pinto
- Federal University of Tocantins, Quadra 806 South, Alameda 02, HM 1, Apt 202, Block C, Palmas, Tocantins, Brazil. .,Department of Nutrition and Health, Federal University of Viçosa, University Campus, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Danielle Cristina Guimarães da Silva
- Department of Nutrition and Health, Federal University of Viçosa, University Campus, Viçosa, Minas Gerais, 36570-900, Brazil.,Federal University of the West of Bahia, Rua Professor José Seabra de Lemos, 316, Recanto dos Pássaros, Barreiras, Bahia, 47808-021, Brazil
| | - Josefina Bressan
- Department of Nutrition and Health, Federal University of Viçosa, University Campus, Viçosa, Minas Gerais, 36570-900, Brazil
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Nielsen MS, Ritz C, Wewer Albrechtsen NJ, Holst JJ, le Roux CW, Sjödin A. Oxyntomodulin and Glicentin May Predict the Effect of Bariatric Surgery on Food Preferences and Weight Loss. J Clin Endocrinol Metab 2020; 105:5722168. [PMID: 32016415 DOI: 10.1210/clinem/dgaa061] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/03/2020] [Indexed: 01/06/2023]
Abstract
BACKGROUND Alterations in several gastrointestinal hormones are implicated in the postoperative suppression of food intake leading to weight loss after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). The aim was to evaluate changes in responses of gastrointestinal hormones after RYGB and SG and the associations of these changes with weight loss, energy intake, and food preferences. METHODS Forty-two subjects with severe obesity were included (32 RYGB; 10 SG). Postprandial responses of glicentin, oxyntomodulin, glucagon-like peptide-1 (GLP-1), peptide YY (PYY), and ghrelin were measured before and 6 months after surgery. Energy intake and energy density were assessed before and 6 months after surgery using a buffet meal test and weight loss was assessed 18 months after surgery. RESULTS Postprandial concentrations of glicentin, oxyntomodulin, GLP-1, and ghrelin differed between RYGB and SG (all P ≤ .02). Enhanced responses of glicentin and oxyntomodulin predicted a greater weight loss (both P < .01) and were associated with a larger decrease in energy density (P ≤ .04). No associations were found for GLP-1, PYY, and ghrelin, and changes were not associated with changes in energy intake. When combing all hormones, 60%, 19%, and 33% of the variations in weight loss, energy intake, and energy density, respectively, could be explained. CONCLUSION Postprandial responses of gastrointestinal hormones differed between RYGB and SG. Enhanced responses of glicentin and oxyntomodulin predicted a better weight loss and were associated with a decreased preference for energy-dense foods. Replication of these results could imply an opportunity to identify patients in need of additional support after surgical treatments of obesity.
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Affiliation(s)
- Mette S Nielsen
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
- The Danish Diabetes Academy, Odense, Denmark
| | - Christian Ritz
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Nicolai J Wewer Albrechtsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Jens Juul Holst
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- NNF Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Carel W le Roux
- Investigative Science, Imperial College London, London, UK
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Anders Sjödin
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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Janmohammadi P, Sajadi F, Alizadeh S, Daneshzad E. Comparison of Energy and Food Intake Between Gastric Bypass and Sleeve Gastrectomy: a Meta-analysis and Systematic Review. Obes Surg 2020; 29:1040-1048. [PMID: 30610675 DOI: 10.1007/s11695-018-03663-w] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AbstractObesity is a developed nutritional problem, and today, surgery is one of the approaches to cure it. A good understanding of the variations in food intake will be beneficial for sustaining long-term weight loss post-surgery and for improving nutrition care strategies. The purpose of this review was the comparison of the impact of two methods of gastric bypass (GBP) and sleeve gastrectomy (SG) on dietary intake. Databases of PubMed, Embase, Scopus, Google Scholar, and Web of science were used for the literature search up to June 2018. We concluded the studies that measured mean daily energy intake and the percent of macronutrients from total calorie intake of before and after GBP and SG. A total of 18 studies were finally included in the meta-analysis for the effect of bariatric surgery on food intake. Bariatric surgery significantly decreased energy intake by 1050.04 kcal/day (p < 0.001) compared with the baseline values of energy intake. The pooled effect of bariatric surgery on protein intake was 0.82 g/day (p = 0.004) compared with the baseline values. The pooled analysis found no significant impact of bariatric surgery on carbohydrate intake (WMD = 0.56 g/day; p = 0.40) compared with the baseline values. The pooled estimate of effect for bariatric surgery on fat intake was - 1.34 g/day (p = 0.006). This study demonstrates that bariatric surgery might be effective on energy and fat intake; however, there was no effect on carbohydrate intake.
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Affiliation(s)
- Parisa Janmohammadi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Forough Sajadi
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Shahab Alizadeh
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Elnaz Daneshzad
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
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Dischinger U, Hasinger J, Königsrainer M, Corteville C, Otto C, Fassnacht M, Hankir M, Seyfried FJD. Toward a Medical Gastric Bypass: Chronic Feeding Studies With Liraglutide + PYY 3-36 Combination Therapy in Diet-Induced Obese Rats. Front Endocrinol (Lausanne) 2020; 11:598843. [PMID: 33551994 PMCID: PMC7862770 DOI: 10.3389/fendo.2020.598843] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/07/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Combination therapies of anorectic gut hormones partially mimic the beneficial effects of bariatric surgery. Thus far, the effects of a combined chronic systemic administration of Glucagon-like peptide-1 (GLP-1) and peptide tyrosine tyrosine 3-36 (PYY3-36) have not been directly compared to Roux-en-Y gastric bypass (RYGB) in a standardized experimental setting. METHODS High-fat diet (HFD)-induced obese male Wistar rats were randomized into six treatment groups: (1) RYGB, (2) sham-operation (shams), (3) liraglutide, (4) PYY3-36, (5) PYY3-36+liraglutide (6), saline. Animals were kept on a free choice high- and low-fat diet. Food intake, preference, and body weight were measured daily for 4 weeks. Open field (OP) and elevated plus maze (EPM) tests were performed. RESULTS RYGB reduced food intake and achieved sustained weight loss. Combined PYY3-36+liraglutide treatment led to similar and plateaued weight loss compared to RYGB. Combined PYY3-36+liraglutide treatment was superior to PYY3-36 (p ≤ 0.0001) and liraglutide (p ≤ 0.05 or p ≤ 0.01) mono-therapy. PYY3-36+liraglutide treatment and RYGB also reduced overall food intake and (less pronounced) high-fat preference compared to controls. The animals showed no signs of abnormal behavior in OF or EPM. CONCLUSIONS Liraglutide and PYY3-36 combination therapy vastly mimics reduced food intake, food choice and weight reducing benefits of RYGB.
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Affiliation(s)
- Ulrich Dischinger
- Department of Internal Medicine, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, Würzburg, Germany
- *Correspondence: Ulrich Dischinger,
| | - Julia Hasinger
- Department of Internal Medicine, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, Würzburg, Germany
| | - Malina Königsrainer
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital, University of Würzburg, Würzburg, Germany
| | - Carolin Corteville
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital, University of Würzburg, Würzburg, Germany
| | - Christoph Otto
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital, University of Würzburg, Würzburg, Germany
| | - Martin Fassnacht
- Department of Internal Medicine, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, Würzburg, Germany
| | - Mohamed Hankir
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital, University of Würzburg, Würzburg, Germany
| | - Florian Johannes David Seyfried
- Department of General, Visceral, Transplant, Vascular and Pediatric Surgery, University Hospital, University of Würzburg, Würzburg, Germany
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Nielsen MS, Andersen INSK, Lange B, Ritz C, le Roux CW, Schmidt JB, Sjödin A, Bredie WLP. Bariatric Surgery Leads to Short-Term Effects on Sweet Taste Sensitivity and Hedonic Evaluation of Fatty Food Stimuli. Obesity (Silver Spring) 2019; 27:1796-1804. [PMID: 31556242 DOI: 10.1002/oby.22589] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 06/18/2019] [Indexed: 01/22/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the effect of bariatric surgery on sweet taste sensitivity and the hedonic evaluation of sweet, savory, and fatty food stimuli as well as associations with weight loss and food preferences assessed at a buffet meal test. METHODS The detection and recognition threshold for sweet taste and the hedonic rating of sweet, savory, and fatty food stimuli were assessed before and after a preoperative diet-induced weight loss and 6 weeks, 6 months, and 18 months after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) (n = 29). RESULTS The detection threshold for sweet taste decreased after the diet-induced weight loss and 6 weeks after RYGB (both P ≤ 0.03). The hedonic rating of high-fat food stimuli decreased 6 weeks after RYGB and SG (all P ≤ 0.02). Changes in the hedonic rating of high-fat food stimuli were associated with increased preferences for high-fat foods at the buffet meal (P = 0.03) and tended to be associated with weight loss (P = 0.05). No changes were detected for sweet and savory food stimuli. CONCLUSIONS RYGB increased sweet taste sensitivity; however, this effect was already seen after the diet-induced weight-loss. RYGB and SG decreased the hedonic evaluation of high-fat food stimuli, but this effect did not translate into decreased preferences for high-fat food.
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Affiliation(s)
- Mette S Nielsen
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Denmark
- The Danish Diabetes Academy, Odense, Denmark
| | | | - Belinda Lange
- Department of Food Science, Faculty of Science, University of Copenhagen, Denmark
| | - Christian Ritz
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Denmark
| | - Carel W le Roux
- Investigative Science, Imperial College London, UK
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Ireland
| | - Julie B Schmidt
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Denmark
| | - Anders Sjödin
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Denmark
| | - Wender L P Bredie
- Department of Food Science, Faculty of Science, University of Copenhagen, Denmark
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Asarian L, Geary N. RYGB and flavor-consequence learning. Appetite 2019; 146:104467. [PMID: 31557496 DOI: 10.1016/j.appet.2019.104467] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 09/19/2019] [Accepted: 09/20/2019] [Indexed: 02/07/2023]
Abstract
Flavor-consequence learning refers to learned associations between flavor stimuli and post-oral consequences of food that affect food selection, amount eaten and affect. Forms of flavor-consequence learning include flavor aversions, flavor avoidance, conditioned satiety, expected satiety and appetition. Roux-en-Y gastric bypass surgery (RYGB) and other bariatric procedures alter gastrointestinal processing of food in a number of ways. Thus, it is plausible that these procedures alter post-oral unconditioned stimuli that support flavor-consequence learning, leading to altered food selection, amount eaten, and affect. Surprisingly, however, there is almost no research on the role of flavor-consequence learning in the effects of bariatric surgery on appetite. This issue urgently warrants investigation.
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Affiliation(s)
- Lori Asarian
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, 05405, USA.
| | - Nori Geary
- Department of Psychiatry, Weill Medical College of Cornell University, New York, NY, 10025, USA
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Nielsen MS, Schmidt JB, le Roux CW, Sjödin A. Effects of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy on Food Preferences and Potential Mechanisms Involved. Curr Obes Rep 2019; 8:292-300. [PMID: 31222526 DOI: 10.1007/s13679-019-00354-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Bariatric surgery leads to a substantial decrease in energy intake. It is unclear whether this decrease in energy intake is simply due to eating smaller portions of the same food items or a shift in food preference towards less energy-dense foods. This review evaluates the existing literature on changes in food preferences after bariatric surgery and the potential mechanisms involved. RECENT FINDINGS Changes in food preferences have been reported; however, the evidence is mainly based on indirect measurements, such as self-reporting. When changes in food preferences are directly assessed, results contradict previous findings, indicating that results based on self-reporting must be interpreted with caution as they do not necessarily reflect actual behaviour. However, it seems that there could be inter-individual differences in the response to surgery. Future studies investigating changes in food preferences should not only focus on direct measured of behaviour but should also consider the heterogeneity of the response after bariatric surgery.
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Affiliation(s)
- Mette S Nielsen
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity research), University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg C, Denmark.
- The Danish Diabetes Academy, Odense University Hospital, Odense, Denmark.
| | - Julie B Schmidt
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity research), University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg C, Denmark
| | - Carel W le Roux
- Investigative Science, Imperial College London, London, UK
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Anders Sjödin
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity research), University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg C, Denmark
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Nance K, Acevedo MB, Pepino MY. Changes in taste function and ingestive behavior following bariatric surgery. Appetite 2019; 146:104423. [PMID: 31473274 DOI: 10.1016/j.appet.2019.104423] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/22/2019] [Accepted: 08/23/2019] [Indexed: 02/06/2023]
Abstract
Bariatric surgery is the most effective treatment for severe obesity and its related comorbidities. Roux-en-Y Gastric Bypass (RYGB) and Sleeve Gastrectomy (SG) are currently the most popular weight-loss surgeries used worldwide. Following these surgeries, many patients self-report changes in taste perception and decreased preference for unhealthy foods. These reported changes might account for increased adherence to healthier diets and successful weight loss after surgeries. However, researchers have used a variety of methodologies to assess patients' reported changes andresults are discrepant. The goal of this review is to summarize the literature regarding changes to taste function and ingestive behavior following RYGB and SG to examine differences in findings by methodology (indirect vs. direct measurements). We focused our review around changes in sweets, fats, and alcohol because most of the documented changes in ingestive behavior post-surgery are related to changes in these dietary items. We found that studies using surveys and questionnaires generally find that subjects self-report changes in taste and decrease their preference and cravings for energy-dense foods (particularly, sweets and high-fats). However, studies using validated sensory techniques that include oral sampling or by using direct food intake measurements find little to no change in subjects' ability to perceive taste or their preference for energy-dense foods. Therefore, reported changes in taste and food preferences are unlikely to be explained by alterations in taste intensity and diet selection, and are rather related to changes in the rewarding value of food. Further, that RYGB, and likely SG, is associated with increased alcohol consumption and arisk to develop an alcohol use disorder) supports the notion that these surgeries alter central circuits of reward that are critical in the regulation of ingestive behavior.
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Affiliation(s)
- Katie Nance
- Department of Food Science and Human Nutrition, College of Agricultural, Consumer and Environmental Sciences, University of Illinois, 905 South Goodwin Avenue, Urbana, IL, 61801, USA.
| | - M Belén Acevedo
- Department of Food Science and Human Nutrition, College of Agricultural, Consumer and Environmental Sciences, University of Illinois, 905 South Goodwin Avenue, Urbana, IL, 61801, USA.
| | - M Yanina Pepino
- Department of Food Science and Human Nutrition, College of Agricultural, Consumer and Environmental Sciences, University of Illinois, 905 South Goodwin Avenue, Urbana, IL, 61801, USA; Division of Nutritional Sciences, College of Agricultural, Consumer and Environmental Sciences, University of Illinois, 905 South Goodwin Avenue, Urbana, IL, 61801, USA.
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Benaiges D, Parri A, Subirana I, Pedro-Botet J, Villatoro M, Ramon JM, Climent E, Flores Le Roux JA, Goday A. Most of qualitative dietary changes observed one year post-bariatric surgery can be achieved with a preoperative dietary intervention. ACTA ACUST UNITED AC 2019; 67:20-27. [PMID: 31288988 DOI: 10.1016/j.endinu.2019.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 03/21/2019] [Accepted: 05/02/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND OBJECTIVES Bariatric surgery (BS) leads to several changes in nutritional habits that can be attributed to different mechanisms. Some of these changes could be achievable with a preoperative nutritional intervention. The objective was to evaluate dietary modifications during the preoperative and postoperative periods of BS. METHODS Prospective observational study of patients who underwent BS between 2010 and 2014 at the Hospital del Mar; 60 consecutive patients were included. Food consumption was measured by a validated food-frequency questionnaire at inclusion in the bariatric surgery program, after preoperative nutritional intervention, and one year after surgery. Generalized estimating equation models were used to assess differences in food group intake during follow up. RESULTS Energy intake significantly decreased from inclusion to 1 year of surgery (p=0.003). After the preoperative intervention and prior to surgery, there was an increase in intake of nuts, vegetables, poultry and rabbit, fruit, fish and skimmed milk products and a decrease in bread, soft drinks and pastry. At one year post-surgery, a continued decrease in the consumption of bread and soft drinks and an increase in nuts was observed (linear non-quadratic trend). Consumption of fruit, pastry, fish and skimmed milk products remained stable showing a linear and quadratic trend. Vegetables and poultry and rabbit increased in the preoperative period and decreased after surgery, showing a quadratic but not linear trend. CONCLUSIONS a preoperative nutritional intervention in morbidly obese patients can associate favorable dietary changes that are mostly maintained one year after bariatric surgery.
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Affiliation(s)
- David Benaiges
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain; Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar, Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Spain.
| | - Alejandra Parri
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain; PhD Research Program in Dietetics and Nutrition (EEES 101105 Nutrició i salut), Barcelona University, Barcelona, Spain
| | - Isaac Subirana
- Cardiovascular Epidemiology and Genetics Research Group, REGICOR Study Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Catalonia, Spain; CIBER Epidemiology and Public Health (CIBERESP), Barcelona, Catalonia, Spain
| | - Juan Pedro-Botet
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain; Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar, Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Spain
| | | | - Jose M Ramon
- Departament de Medicina, Universitat Autònoma de Barcelona, Spain; Unit of Gastrointestinal Surgery, Hospital del Mar, Institut de Recerca IMIM-Hospital del Mar, Barcelona, Spain
| | - Elisenda Climent
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain
| | - Juana A Flores Le Roux
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain; Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar, Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Spain
| | - Alberto Goday
- Department of Endocrinology and Nutrition, Hospital del Mar, Barcelona, Spain; Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar, Barcelona, Spain; Departament de Medicina, Universitat Autònoma de Barcelona, Spain; Centro de Investigaciones Biomédicas en Red de Obesidad y Nutrición, CIBERobn, Spain
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Mangan A, Le Roux CW, Miller NG, Docherty NG. Iron and Vitamin D/Calcium Deficiency after Gastric Bypass: Mechanisms Involved and Strategies to Improve Oral Supplement Disposition. Curr Drug Metab 2019; 20:244-252. [DOI: 10.2174/1389200219666181026160242] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 10/01/2018] [Accepted: 11/20/2018] [Indexed: 12/17/2022]
Abstract
Background:Nutritional deficiencies are common following Roux-en-Y Gastric Bypass (RYGB). Aetiology is diverse; including non-compliance, altered diet, unresolved preoperative deficiency and differential degrees of post-operative malabsorption occurring as function of length of bypassed intestine. Iron and calcium/vitamin D deficiency occur in up to 50% of patients following RYGB. Currently, treatment strategies recommend the prescription of oral supplements for those who become deficient. Meanwhile, debate exists regarding the absorption capacity of these post-operatively and their efficacy in treating deficiency.Objective:To examine the disposition of oral iron and calcium/vitamin D supplementation following RYGB. Methods: A literature review was carried out using PubMed and Embase. Data from the key interventional studies investigating iron and calcium/vitamin D oral supplement absorption and efficacy following RYGB was summarized.Results:Absorption of both iron and vitamin D/calcium is adversely affected following RYGB. Distribution and metabolism may be altered by the predominance of paracellular absorption pathways which promote unregulated influx into the circulatory system. Overall, studies indicate that current supplementation strategies are efficacious to a degree in treating deficiency following RYGB, generally restoration of optimal status is not achieved.Conclusion:Oral supplement disposition is altered following RYGB. As a result, patients are required to take regimens of oral supplementation indefinitely. The dosage which confers optimum health benefit while avoiding potential toxicity and tolerability issues remains unknown. Novel preparations with improved disposition could help limit the extent of post-RYGB nutritional deficiencies.
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Affiliation(s)
- Aisling Mangan
- Diabetes Complications Research Center, Conway Institute, University College Dublin, Dublin, Ireland
| | - Carel W. Le Roux
- Diabetes Complications Research Center, Conway Institute, University College Dublin, Dublin, Ireland
| | | | - Neil G. Docherty
- Diabetes Complications Research Center, Conway Institute, University College Dublin, Dublin, Ireland
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Müller TD, Clemmensen C, Finan B, DiMarchi RD, Tschöp MH. Anti-Obesity Therapy: from Rainbow Pills to Polyagonists. Pharmacol Rev 2019; 70:712-746. [PMID: 30087160 DOI: 10.1124/pr.117.014803] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
With their ever-growing prevalence, obesity and diabetes represent major health threats of our society. Based on estimations by the World Health Organization, approximately 300 million people will be obese in 2035. In 2015 alone there were more than 1.6 million fatalities attributable to hyperglycemia and diabetes. In addition, treatment of these diseases places an enormous burden on our health care system. As a result, the development of pharmacotherapies to tackle this life-threatening pandemic is of utmost importance. Since the beginning of the 19th century, a variety of drugs have been evaluated for their ability to decrease body weight and/or to improve deranged glycemic control. The list of evaluated drugs includes, among many others, sheep-derived thyroid extracts, mitochondrial uncouplers, amphetamines, serotonergics, lipase inhibitors, and a variety of hormones produced and secreted by the gastrointestinal tract or adipose tissue. Unfortunately, when used as a single hormone therapy, most of these drugs are underwhelming in their efficacy or safety, and placebo-subtracted weight loss attributed to such therapy is typically not more than 10%. In 2009, the generation of a single molecule with agonism at the receptors for glucagon and the glucagon-like peptide 1 broke new ground in obesity pharmacology. This molecule combined the beneficial anorectic and glycemic effects of glucagon-like peptide 1 with the thermogenic effect of glucagon into a single molecule with enhanced potency and sustained action. Several other unimolecular dual agonists have subsequently been developed, and, based on their preclinical success, these molecules illuminate the path to a new and more fruitful era in obesity pharmacology. In this review, we focus on the historical pharmacological approaches to treat obesity and glucose intolerance and describe how the knowledge obtained by these studies led to the discovery of unimolecular polypharmacology.
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Affiliation(s)
- T D Müller
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany (T.D.M., C.C., M.H.T.); German Center for Diabetes Research, Neuherberg, Germany (T.D.M., C.C., M.H.T.); Department of Chemistry, Indiana University, Bloomington, Indiana (B.F., R.D.D.); and Division of Metabolic Diseases, Technische Universität München, Munich, Germany (M.H.T.)
| | - C Clemmensen
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany (T.D.M., C.C., M.H.T.); German Center for Diabetes Research, Neuherberg, Germany (T.D.M., C.C., M.H.T.); Department of Chemistry, Indiana University, Bloomington, Indiana (B.F., R.D.D.); and Division of Metabolic Diseases, Technische Universität München, Munich, Germany (M.H.T.)
| | - B Finan
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany (T.D.M., C.C., M.H.T.); German Center for Diabetes Research, Neuherberg, Germany (T.D.M., C.C., M.H.T.); Department of Chemistry, Indiana University, Bloomington, Indiana (B.F., R.D.D.); and Division of Metabolic Diseases, Technische Universität München, Munich, Germany (M.H.T.)
| | - R D DiMarchi
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany (T.D.M., C.C., M.H.T.); German Center for Diabetes Research, Neuherberg, Germany (T.D.M., C.C., M.H.T.); Department of Chemistry, Indiana University, Bloomington, Indiana (B.F., R.D.D.); and Division of Metabolic Diseases, Technische Universität München, Munich, Germany (M.H.T.)
| | - M H Tschöp
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany (T.D.M., C.C., M.H.T.); German Center for Diabetes Research, Neuherberg, Germany (T.D.M., C.C., M.H.T.); Department of Chemistry, Indiana University, Bloomington, Indiana (B.F., R.D.D.); and Division of Metabolic Diseases, Technische Universität München, Munich, Germany (M.H.T.)
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Al-Najim W, Docherty NG, le Roux CW. Food Intake and Eating Behavior After Bariatric Surgery. Physiol Rev 2018; 98:1113-1141. [PMID: 29717927 DOI: 10.1152/physrev.00021.2017] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Obesity is an escalating global chronic disease. Bariatric surgery is a very efficacious treatment for obesity and its comorbidities. Alterations to gastrointestinal anatomy during bariatric surgery result in neurological and physiological changes affecting hypothalamic signaling, gut hormones, bile acids, and gut microbiota, which coalesce to exert a profound influence on eating behavior. A thorough understanding of the mechanisms underlying eating behavior is essential in the management of patients after bariatric surgery. Studies investigating candidate mechanisms have expanded dramatically in the last decade. Herein we review the proposed mechanisms governing changes in eating behavior, food intake, and body weight after bariatric surgery. Additive or synergistic effects of both conditioned and unconditioned factors likely account for the complete picture of changes in eating behavior. Considered application of strategies designed to support the underlying principles governing changes in eating behavior holds promise as a means of optimizing responses to surgery and long-term outcomes.
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Affiliation(s)
- Werd Al-Najim
- Diabetes Complications Research Centre, Conway Institute, School of Medicine and Medical Sciences, University College Dublin , Dublin , Ireland ; Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden ; and Investigative Science, Imperial College London , London , United Kingdom
| | - Neil G Docherty
- Diabetes Complications Research Centre, Conway Institute, School of Medicine and Medical Sciences, University College Dublin , Dublin , Ireland ; Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden ; and Investigative Science, Imperial College London , London , United Kingdom
| | - Carel W le Roux
- Diabetes Complications Research Centre, Conway Institute, School of Medicine and Medical Sciences, University College Dublin , Dublin , Ireland ; Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg , Gothenburg , Sweden ; and Investigative Science, Imperial College London , London , United Kingdom
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Søndergaard Nielsen M, Rasmussen S, Just Christensen B, Ritz C, le Roux CW, Berg Schmidt J, Sjödin A. Bariatric Surgery Does Not Affect Food Preferences, but Individual Changes in Food Preferences May Predict Weight Loss. Obesity (Silver Spring) 2018; 26:1879-1887. [PMID: 30421858 DOI: 10.1002/oby.22272] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/13/2018] [Accepted: 06/22/2018] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Using an ad libitum buffet meal targeting direct behavior, the authors of the current study previously reported no effect of Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) surgery on food preferences 6 months after surgery. The current study investigated changes in food preferences at 18 months after surgery and whether changes in food preferences at 6 months predicted weight loss. METHODS Twenty food items separated into the following food categories were served at the buffet meal: high-fat, low-fat, sweet, savory, high-fat savory, high-fat sweet, low-fat savory, and low-fat sweet. Energy intake and intake from each of the food items were registered. Energy intake prior to the meal was standardized. RESULTS Thirty-nine subjects completed visits before surgery and 18 months following RYGB (n = 29) and SG (n = 10) surgery. Energy intake decreased 41% (4,470 ± 209 kJ vs. 2,618 ± 209 kJ, P < 0.001), but no change occurred in relative energy intake from any of the food categories (all P ≥ 0.23), energy density (P = 0.20), or macronutrient intake (all P ≥ 0.28). However, changes in high-fat food intake, protein intake, energy intake, and energy density at 6 months predicted weight loss at 18 months (P ≤ 0.02). CONCLUSIONS RYGB surgery and SG surgery do not affect food preferences. However, changes in food preferences seem to be predictive of weight loss.
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Affiliation(s)
- Mette Søndergaard Nielsen
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity Research), University of Copenhagen, Copenhagen, Denmark
- The Danish Diabetes Academy, Odense University Hospital, Odense, Denmark
| | - Simone Rasmussen
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity Research), University of Copenhagen, Copenhagen, Denmark
| | - Bodil Just Christensen
- Department of Food and Resource Economics, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
| | - Christian Ritz
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity Research), University of Copenhagen, Copenhagen, Denmark
| | - Carel W le Roux
- Investigative Science, Imperial College London, London, UK
- Diabetes Complications Research Centre, Conway Institute, University College Dublin, Dublin, Ireland
| | - Julie Berg Schmidt
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity Research), University of Copenhagen, Copenhagen, Denmark
| | - Anders Sjödin
- Department of Nutrition, Exercise and Sports, Faculty of Science (Obesity Research), University of Copenhagen, Copenhagen, Denmark
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Attenuation of diet-induced hypothalamic inflammation following bariatric surgery in female mice. Mol Med 2018; 24:56. [PMID: 30355312 PMCID: PMC6201532 DOI: 10.1186/s10020-018-0057-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/09/2018] [Indexed: 12/14/2022] Open
Abstract
Background Exposure of rodents to chronic high-fat diet (HFD) results in upregulation of inflammatory markers and proliferation of microglia within the mediobasal hypothalamus. Such hypothalamic inflammation is associated with metabolic dysfunction, central leptin resistance, and maintenance of obesity. Bariatric surgeries result in long-term stable weight loss and improved metabolic function. However, the effects of such surgical procedures on HFD-induced hypothalamic inflammation are unknown. We sought to characterize the effects of two bariatric surgical procedures, Roux-en-Y gastric bypass (RYGB) and biliary diversion (BD-IL), in female mice with particular emphasis on HFD-induced hypothalamic inflammation and microgliosis. Methods RYGB and BD-IL were performed on diet-induced obese (DIO) mice. Quantitative RT-PCR and fluorescent microscopy were used to evaluate hypothalamic inflammatory gene expression and microgliosis. Results were compared to lean (CD), DIO sham-surgerized mice (DIO-SHAM), and dietary weight loss (DIO-Rev) controls. Results In female mice, RYGB and BD-IL result in normalization of hypothalamic inflammatory gene expression and microgliosis within 8 weeks of surgery, despite ongoing exposure to HFD. Paralleling these results, the hypothalamic expression levels of the orexigenic neuropeptide Agrp and the anorexic response of surgical mice to exogenous leptin were comparable to lean controls (CD). In contrast, results from DIO-Rev mice were comparable to DIO-SHAM mice, despite transition back to standard rodent show and normalization of weight. Conclusion Bariatric surgery attenuates HFD-induced hypothalamic inflammation and microgliosis and restores leptin sensitivity, despite ongoing exposure to HFD.
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Henfridsson P, Laurenius A, Wallengren O, Gronowitz E, Dahlgren J, Flodmark CE, Marcus C, Olbers T, Ellegård L. Five-year changes in dietary intake and body composition in adolescents with severe obesity undergoing laparoscopic Roux-en-Y gastric bypass surgery. Surg Obes Relat Dis 2018; 15:51-58. [PMID: 30497848 DOI: 10.1016/j.soard.2018.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 10/07/2018] [Accepted: 10/13/2018] [Indexed: 11/15/2022]
Abstract
BACKGROUND Information is scarce on long-term changes in energy intake (EI), dietary energy density (DED), and body composition in adolescents undergoing laparoscopic Roux-en-Y gastric bypass (RYGB). OBJECTIVES To investigate long-term changes in EI, DED, and body composition in adolescents after LRYGB. SETTING University hospitals, multicenter study, Sweden. METHODS Eighty-five adolescents (67% girls; mean ± standard deviation, age 16.0 ± 1.2 yr, body mass index 45.5 ± 6.1 kg/m2) were assessed preoperatively (baseline) and 1, 2, and 5 years after LRYGB with diet history interviews and dual-energy x-ray absorptiometry. Matched obese adolescent controls receiving nonsurgical treatment were assessed only at 5 years. RESULTS Weight decreased 31%, 33%, and 28% at 1, 2, and 5 years after LRYGB (P < .001) while controls gained 13% over 5 years (P < .001). Dietary assessments were completed in 98%, 93%, 87%, and 75% at baseline and 1, 2, and 5 years, respectively, and in 65% of controls. Baseline EI (2558 kcal/d), decreased by 34%, 22%, and 10% after 1, 2, and 5 years (P < .05). DED decreased at 1 year (P = .03). Macronutrient distribution was not different from controls at 5 years, but EI and DED were 31% and 14% lower (P < .015). Fat, fat-free, and muscle mass decreased through 5 years after LRYGB (P < .001). Boys preserved muscle mass more than girls (P < .01). Adequate protein intake was associated with preservation of muscle mass (P = .003). CONCLUSIONS In adolescents undergoing LRYGB EI remained 10% lower 5 years after surgery. Decreased EI and DED, rather than macronutrient distribution, are important factors in weight loss after surgery. Higher protein intake may facilitate preservation of muscle mass.
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Affiliation(s)
- Pia Henfridsson
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Anna Laurenius
- Department of Gastrosurgical Research and Education, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Ola Wallengren
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Eva Gronowitz
- Department of Pediatrics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jovanna Dahlgren
- Department of Pediatrics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Claude Marcus
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
| | - Torsten Olbers
- Department of Gastrosurgical Research and Education, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Surgery, Norrköping, Linköping University, Linköping, Sweden
| | - Lars Ellegård
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Zoon H, de Bruijn S, Jager G, Smeets P, de Graaf C, Janssen I, Schijns W, Deden L, Boesveldt S. Altered neural inhibition responses to food cues after Roux-en-Y Gastric Bypass. Biol Psychol 2018; 137:34-41. [DOI: 10.1016/j.biopsycho.2018.06.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 05/22/2018] [Accepted: 06/18/2018] [Indexed: 12/23/2022]
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Brandt SJ, Kleinert M, Tschöp MH, Müller TD. Are peptide conjugates the golden therapy against obesity? J Endocrinol 2018; 238:R109-R119. [PMID: 29848610 PMCID: PMC6026923 DOI: 10.1530/joe-18-0264] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 05/30/2018] [Indexed: 12/19/2022]
Abstract
Obesity is a worldwide pandemic, which can be fatal for the most extremely affected individuals. Lifestyle interventions such as diet and exercise are largely ineffective and current anti-obesity medications offer little in the way of significant or sustained weight loss. Bariatric surgery is effective, but largely restricted to only a small subset of extremely obese patients. While the hormonal factors mediating sustained weight loss and remission of diabetes by bariatric surgery remain elusive, a new class of polypharmacological drugs shows potential to shrink the gap in efficacy between a surgery and pharmacology. In essence, this new class of drugs combines the beneficial effects of several independent hormones into a single entity, thereby combining their metabolic efficacy to improve systems metabolism. Such unimolecular drugs include single molecules with agonism at the receptors for glucagon, glucagon-like peptide 1 and the glucose-dependent insulinotropic polypeptide. In preclinical studies, these specially tailored multiagonists outperform both their mono-agonist components and current best in class anti-obesity medications. While clinical trials and vigorous safety analyses are ongoing, these drugs are poised to have a transformative effect in anti-obesity therapy and might hopefully lead the way to a new era in weight-loss pharmacology.
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Affiliation(s)
- S J Brandt
- Institute for Diabetes and ObesityHelmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
- German Center for Diabetes Research (DZD)Neuherberg, Germany
| | - M Kleinert
- Institute for Diabetes and ObesityHelmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
- German Center for Diabetes Research (DZD)Neuherberg, Germany
| | - M H Tschöp
- Institute for Diabetes and ObesityHelmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
- German Center for Diabetes Research (DZD)Neuherberg, Germany
- Division of Metabolic DiseasesTechnische Universität, Munich, Germany
| | - T D Müller
- Institute for Diabetes and ObesityHelmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
- German Center for Diabetes Research (DZD)Neuherberg, Germany
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Abstract
The obesity epidemic continues to escalate each year in the United States more than anywhere else in the world. The existing pharmaceutical and other nonsurgical treatments for morbid obesity produce suboptimal physiologic outcomes compared with those of Roux-en-Y gastric bypass (RYGB) surgery. RYGB has been the gold standard of bariatric surgery because the beneficial long-term outcomes, which include sustainable weight loss and type 2 diabetes mellitus (T2DM) resolution, are far superior to those obtained with other bariatric surgeries. However, the current understanding of RYGB's mechanisms of actions remains limited and incomplete. There is an urgent need to understand these mechanisms as gaining this knowledge may lead to the development of innovative and less invasive procedures and/or medical devices, which can mirror the favorable outcomes of RYGB surgery. In this review, we highlight current observations of the metabolic and physiologic events following RYGB, with a particular focus on the role of the anatomical reconfiguration of the gastrointestinal tract after RYGB.
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Affiliation(s)
- Martin L Yarmush
- Center for Engineering in Medicine, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, and Shriners Burn Hospital for Children, Boston, Massachusetts 02114;
| | - Matthew D'Alessandro
- Center for Engineering in Medicine, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, and Shriners Burn Hospital for Children, Boston, Massachusetts 02114;
| | - Nima Saeidi
- Center for Engineering in Medicine, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, and Shriners Burn Hospital for Children, Boston, Massachusetts 02114;
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