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Szczerbinski L, Florez JC. Precision medicine of obesity as an integral part of type 2 diabetes management - past, present, and future. Lancet Diabetes Endocrinol 2023; 11:861-878. [PMID: 37804854 DOI: 10.1016/s2213-8587(23)00232-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/29/2023] [Accepted: 08/01/2023] [Indexed: 10/09/2023]
Abstract
Obesity is a complex and heterogeneous condition that leads to various metabolic complications, including type 2 diabetes. Unfortunately, for some, treatment options to date for obesity are insufficient, with many people not reaching sustained weight loss or having improvements in metabolic health. In this Review, we discuss advances in the genetics of obesity from the past decade-with emphasis on developments from the past 5 years-with a focus on metabolic consequences, and their potential implications for precision management of the disease. We also provide an overview of the potential role of genetics in guiding weight loss strategies. Finally, we propose a vision for the future of precision obesity management that includes developing an obesity-centred multidisease management algorithm that targets both obesity and its comorbidities. However, further collaborative efforts and research are necessary to fully realise its potential and improve metabolic health outcomes.
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Affiliation(s)
- Lukasz Szczerbinski
- Diabetes Unit, Endocrine Division, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA; Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA; Programs in Metabolism and Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland; Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
| | - Jose C Florez
- Department of Medicine, Massachusetts General Hospital, Boston, MA, USA; Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA; Programs in Metabolism and Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA; Department of Medicine, Harvard Medical School, Boston, MA, USA.
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Osorio-Conles Ó, Jiménez A, Ibarzabal A, Balibrea JM, de Hollanda A, Vidal J. Limited Bariatric Surgery-induced Weight Loss in Subjects With Type 2 Diabetes: Predictor Variables in Adipose Tissue. J Clin Endocrinol Metab 2023; 108:e1205-e1213. [PMID: 37249080 DOI: 10.1210/clinem/dgad271] [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: 11/08/2022] [Indexed: 05/31/2023]
Abstract
CONTEXT The impact of type 2 diabetes mellitus (T2D) at baseline on limited weight loss (WL) after bariatric surgery (BS) remains controversial, and the potential underlying mechanisms incompletely understood. OBJECTIVE We aimed at gaining further insight on this relationship and identifying novel associations between adipose tissue (AT) parameters and short-term WL outcomes in subjects with or without T2D undergoing BS. METHODS Mid-term WL trajectories after BS have been evaluated in a cohort of 1659 subjects (cohort 1) with (n = 543) and without T2D (n = 1116). Paired subcutaneous and visceral AT samples were obtained from a cohort of 48 pairs of subjects with and without T2D matched for age, sex, BMI, and type of BS (cohort 2). Differences in AT parameters between groups were evaluated and potential associations with WL response explored. RESULTS T2D was independently associated with a 5% lesser mid-term WL in cohort 1, while HbA1c, insulin treatment, and number of T2D medications prior to BS were only related to short-term WL outcomes. In cohort 2, a number of differentially expressed genes in AT were identified between groups, while fat cell size and fibrosis were comparable. Subcutaneous ATG7 expression was found as an independent predictor of limited WL 1 year after surgery (β: -12.21 ± 4.41, P = .008) and its addition to a clinical model significantly improved the amount of WL variability explained (R2 = 0.131 vs R2 = 0.248, F change P = .009). CONCLUSION Our results highlight the importance of T2D as determinant of limited WL following BS and suggest that dysregulated macroautophagy in subcutaneous AT may contribute to this association.
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Affiliation(s)
- Óscar Osorio-Conles
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Amanda Jiménez
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red Fisiopatologia de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Ainitze Ibarzabal
- Gastrointestinal Surgery Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
| | - José María Balibrea
- Gastrointestinal Surgery Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
| | - Ana de Hollanda
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red Fisiopatologia de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Josep Vidal
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
- Institut d´Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Obesity Unit, Endocrinology and Nutrition Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain
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Maroszczuk T, Lewandowska J, Kapała JM, Lech P, Dowgiałło-Gornowicz N. Is one-anastomosis gastric bypass a good revisional bariatric surgery? A single-center retrospective cohort study. POLISH JOURNAL OF SURGERY 2023; 96:49-56. [PMID: 38353091 DOI: 10.5604/01.3001.0053.9293] [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: 02/16/2024]
Abstract
<b><br>Introduction:</b> The rate of revisional surgeries following sleeve gastrectomy (SG) has increased. One-anastomosis gastric bypass (OAGB) appears to have multiple advantages as a primary bariatric procedure. OAGB as revisional surgery is still being investigated.</br> <b><br>Aim:</b> Evaluation of the efficacy and safety of OAGB performed as a post-SG revisional surgery.</br> <b><br>Materials and methods:</b> A single-center, retrospective cohort study was conducted using a routinely collected database of adults undergoing revisional OAGB after SG. A survey of patients was conducted, obtaining information on changes in body weight and improvement in gastroesophageal reflux disease (GERD) and obesity-related diseases.</br> <b><br>Results:</b> The study group included 74 patients: 59 women (80%) and 15 men, mean age of 41.61 9.21 years. The most common indication for OAGB was weight regain. The follow-up was up to 7 years, the mean time was 3.58 1.21 years. The mean preoperative body mass index (BMI) was 40.38 6.15. All patients experienced significant weight loss, reaching a BMI of 33.61 (27.28- 37.13) at the last observation. After surgery, 35% of patients achieved successful weight loss and 48% of patients achieved remission or improvement of GERD.</br> <b><br>Conclusions:</b> Revisional OAGB seems to be a good alternative after a failed SG in terms of obesity-related disease recurrence, not of weight regain. Long-term follow-up revealed that only a third of patients achieved successful weight loss. When proposing revisional OAGB, the risk of complications - mainly anemia and the possibility of de novo GERD should be considered.</br>.
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Affiliation(s)
- Tomasz Maroszczuk
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Olsztyn, Poland
| | - Julia Lewandowska
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Olsztyn, Poland
| | - Jan Maciej Kapała
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Olsztyn, Poland
| | - Paweł Lech
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Olsztyn, Poland
| | - Natalia Dowgiałło-Gornowicz
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Olsztyn, Poland
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Kapała J, Maroszczuk T, Lewandowska J, Lech P, Dowgiałło-Gornowicz N. Weight Regain in the Second Year after Sleeve Gastrectomy Could Be a Predictor of Long-Term Outcomes? MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59040766. [PMID: 37109724 PMCID: PMC10143935 DOI: 10.3390/medicina59040766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023]
Abstract
Background and Objectives: Sleeve gastrectomy (SG) is an effective surgical procedure in the treatment of obesity. However, a significant percentage of patients suffer from weight regain over long-term follow-up. The mechanisms responsible for this process are still poorly understood. The aim of the study is to evaluate the predictive effect of weight regain in the second year after SG on long-term bariatric surgery effectiveness. Methods: A retrospective cohort study was performed using the database of routinely collected information about patients undergoing SG in the Department of General, Minimally Invasive and Elderly Surgery in Olsztyn. Patients were divided into two groups according to the change in body weight between the first and second years after the surgery: weight gainers (WG) and weight maintainers (WM). Results: A study group consisting of 206 patients, with follow-up over 5 years, was included in the study. The WG group consisted of 69 patients while the WM group had 137 patients. There were no significant differences between the patient characteristics (p > 0.05). The WM group had a mean %EWL of 7.45% (SD, 15.83%) and %TWL of 3.74 (SD, 8.43). The WG group had a mean %EWL of 22.78% (SD, 17.11%) and %TWL of 11.29% (SD, 8.68). The difference between the groups was statistically significant (p < 0.05). The study showed significantly better results in WM compared to WG (p < 0.05). Conclusion: Weight regain in the second year after SG may be a good factor for long-term bariatric surgery effectiveness prognosis.
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Affiliation(s)
- Jan Kapała
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Niepodległosci 44 St., 10-045 Olsztyn, Poland
| | - Tomasz Maroszczuk
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Niepodległosci 44 St., 10-045 Olsztyn, Poland
| | - Julia Lewandowska
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Niepodległosci 44 St., 10-045 Olsztyn, Poland
| | - Paweł Lech
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Niepodległosci 44 St., 10-045 Olsztyn, Poland
| | - Natalia Dowgiałło-Gornowicz
- Department of General, Minimally Invasive and Elderly Surgery, Collegium Medicum, University of Warmia and Mazury, Niepodległosci 44 St., 10-045 Olsztyn, Poland
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Voorwinde V, Hoekstra T, Monpellier V, Steenhuis I, Janssen I, van Stralen M. Five-year weight loss, physical activity, and eating style trajectories following bariatric surgery. Surg Obes Relat Dis 2022; 18:911-918. [DOI: 10.1016/j.soard.2022.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/11/2022] [Accepted: 03/21/2022] [Indexed: 11/26/2022]
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Impact of smoking on weight loss outcomes after bariatric surgery: a literature review. Surg Endosc 2021; 35:5936-5952. [PMID: 34319440 DOI: 10.1007/s00464-021-08654-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 07/16/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND The association between smoking and surgical complications after bariatric surgery has been well-established. However, given that this patient population is inherently weight-concerned, understanding the effects of tobacco use on postoperative weight loss is essential to guiding clinicians in counseling patients. We aimed to summarize the current literature examining the effects of preoperative and postoperative smoking, as well as changes in smoking status, on bariatric surgery weight loss outcomes. METHODS Ovid MEDLINE, PubMed, and SCOPUS databases were queried to identify relevant published studies. RESULTS Overall, 20 studies were included. Preoperative and postoperative smoking rates varied widely across studies, as did requirements for smoking cessation prior to bariatric surgery. Reported preoperative smoking prevalence ranged from 1 to 62%, and postoperative smoking prevalence ranged from 6 to 43%. The majority of studies which examined preoperative and/or postoperative smoking habits found no association between smoking habits and postoperative weight loss outcomes. A minority of studies found relatively small differences in postoperative weight loss between smokers and nonsmokers; these often became nonsignificant with longer follow-up. No studies found significant associations between changes in smoking status and weight loss outcomes. CONCLUSION While smoking has been associated with weight loss in the general population, most current evidence demonstrates that smoking habits are not associated with weight loss outcomes after bariatric surgery. However, due to the heterogeneity in study design and analysis, no definitive conclusions can be made, and more robust studies are needed to investigate any relationship between smoking and long-term weight loss outcomes. Given the established increased risk of surgical complications and mortality in smokers, smoking cessation should be encouraged.
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Torrego-Ellacuría M, Barabash A, Larrad-Sainz A, Hernández-Nuñez GM, Matía-Martín P, Pérez-Ferre N, Marcuello C, Sánchez-Pernaute A, Torres AJ, Calle-Pascual AL, Rubio MA. Weight Regain Outcomes After Bariatric Surgery in the Long-term Follow-up: Role of Preoperative Factors. Obes Surg 2021; 31:3947-3955. [PMID: 34146246 DOI: 10.1007/s11695-021-05497-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE Weight regain (WR) compromises the effectiveness of bariatric surgery. The objective of this study was to determine differences in long-term WR prevalence using different definitions and analyze possible preoperative predictors involved. METHODS Single-center retrospective cohort study including 445 adults who underwent 3 modalities of bariatric surgery between 2009 and 2014. EXPOSURE age, gender, ethnicity, body mass index (BMI), type 2 diabetes (T2D), hypertension (HTN), and type of surgery. MAIN OUTCOMES WR at year 6 assessed by 4 definitions and 6 multivariate models based on common thresholds. RESULTS Our cohort (71.1% female) had a mean age of 44.78 ± 11.94 years, and mean presurgery BMI of 44.94 ± 6.88 kg/m2, with a median follow-up of 6 years (IQR=5-8). The prevalences of T2D and HTN were 36.0% and 46.7% respectively. WR rates over thresholds ranged from 25.4 to 68.1%, with significant differences between groups in the WR measured as the percentage of maximum weight loss (MWL) and the increase in excess weight loss (EWL). Presurgery BMI was a significant predictor in 3 models; restrictive techniques were associated with WR in all the models except for those considering WR over 10 kg and WR over 15% from nadir as dependent variables. CONCLUSIONS In this long-term study, WR defined as percentage of MWL and increase in EWL from nadir had the greatest significance in logistic regression models with preoperative BMI and type of surgery as independent variables. These findings could serve to establish a standardized outcome reporting WR in other longitudinal studies. KEY POINTS • Lack of standardized outcome to measure weight regain after bariatric surgery. • Lowest rates of weight regain in malabsorptive techniques in all definitions applied. • Weight regain measured as percentage of maximum weight lost.
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Affiliation(s)
- Macarena Torrego-Ellacuría
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain
| | - Ana Barabash
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain.,Faculty of Medicine, Department of Medicine, Universidad Complutense, Madrid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Angélica Larrad-Sainz
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain
| | - Gemma Maria Hernández-Nuñez
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain
| | - Pilar Matía-Martín
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain.,Faculty of Medicine, Department of Medicine, Universidad Complutense, Madrid, Spain
| | - Natalia Pérez-Ferre
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain
| | - Clara Marcuello
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain
| | - Andrés Sánchez-Pernaute
- Faculty of Medicine, Department of Medicine, Universidad Complutense, Madrid, Spain.,Department of Surgery, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | - Antonio José Torres
- Faculty of Medicine, Department of Medicine, Universidad Complutense, Madrid, Spain.,Department of Surgery, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | - Alfonso Luis Calle-Pascual
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain.,Faculty of Medicine, Department of Medicine, Universidad Complutense, Madrid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Miguel Angel Rubio
- Department of Endocrinology and Nutrition, Hospital Clínico San Carlos, IdISSC, Profesor Martín Lagos s/n, 28040, Madrid, Spain. .,Faculty of Medicine, Department of Medicine, Universidad Complutense, Madrid, Spain.
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What Is Weight Loss After Bariatric Surgery Expressed in Percentage Total Weight Loss (%TWL)? A Systematic Review. Obes Surg 2021; 31:3833-3847. [PMID: 34002289 DOI: 10.1007/s11695-021-05394-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 03/21/2021] [Accepted: 03/25/2021] [Indexed: 12/15/2022]
Abstract
Percentage total weight loss (%TWL) might be better than percentage excess weight loss to express weight loss in bariatric surgery. In this systematic review, performed according to the PRISMA statement, results of laparoscopic sleeve gastrectomy (LSG) and Roux-en-Y gastric bypass (LRYGB) are assessed in %TWL. A total of 13,426 studies were screened and 49 included, reporting data of 24,760 patients. The results show that, despite limiting data, LRYGB is favorable over LSG in terms of weight loss in short-term follow-up. Although recent guidelines recommend to use %TWL when reporting outcome in bariatric surgery, this study shows that there is still insufficient quality data in %TWL, especially on LSG. The use of %TWL as the primary outcome measure in bariatric surgery should be encouraged.
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Charles-Nelson A, Lazzati A, Katsahian S. Analysis of Trajectories of Care After Bariatric Surgery Using Data Mining Method and Health Administrative Information Systems. Obes Surg 2021; 30:2206-2216. [PMID: 32030617 DOI: 10.1007/s11695-020-04430-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
CONTEXT The 30-day readmission rate after bariatric surgery is considered an important metric of the quality of hospital care. However, readmission rate beyond 30 days is rarely reported and does not provide any information about trajectories of care which would be of great interest for healthcare planning. The aim of this study was to analyze trajectories of care during the first year after bariatric surgery on a nationwide basis using data mining methods. METHOD This was a retrospective descriptive study on the trajectories of care within the first year after bariatric surgery. Data were extracted from a national administrative claims database (the PMSI database) and trajectories were defined as principal diagnosis of successive readmissions. Formal Concept Analysis was performed to find common concepts of trajectories of care. RESULTS We included for analysis 198,389 bariatric procedures performed on 196,323 patients. Twelve main concepts were selected. About one third of patients (32.4%) were readmitted in the first year after surgery. Most common trajectories were as follows: regular follow-up (14.9%), cholelithiasis (2.2%), abdominal pain (1.9%), and abdominal sepsis (1.3%). Important differences were found in trajectories among different bariatric procedures: 1.8% of gastric banding patients had pregnancy-related events (delivery or medical abortion), while we observed a readmission rate for abdominal sepsis in 2.7% and 5.1% of patients operated of gastric bypass and sleeve gastrectomy respectively. CONCLUSION Administrative claim data can be analyzed through Formal Concept Analysis in order to classify trajectories of care. This approach permits to quantify expected postoperative complications and to identify unexpected events.
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Affiliation(s)
- Anaïs Charles-Nelson
- Sorbonne Universités, UPMC Univ Paris 06, UMRS 1138, Centre de Recherche des Cordeliers, Paris, France. .,INSERM, UMRS 1138, Centre de Recherche des Cordeliers, Paris, France. .,Université Paris Descartes, Sorbonne Paris Cité, UMRS 1138, Centre de Recherche des Cordeliers, F75006, Paris, France. .,Assistance Publique Hôpitaux de Paris, Hôpital européen Georges Pompidou, Unité d'Épidémiologie et de Recherche Clinique, INSERM, Centre d'Investigation Clinique1418, module Épidémiologie Clinique, HEGP, Paris, France.
| | - Andrea Lazzati
- Université Paris Descartes, Sorbonne Paris Cité, UMRS 1138, Centre de Recherche des Cordeliers, F75006, Paris, France.,Department of General Surgery, Centre Hospitalier Intercommunal de Créteil, 40 avenue de Verdun, 94000, Créteil, France
| | - Sandrine Katsahian
- INSERM, UMRS 1138, Centre de Recherche des Cordeliers, Paris, France.,Université Paris Descartes, Sorbonne Paris Cité, UMRS 1138, Centre de Recherche des Cordeliers, F75006, Paris, France.,Assistance Publique Hôpitaux de Paris, Hôpital européen Georges Pompidou, Unité d'Épidémiologie et de Recherche Clinique, INSERM, Centre d'Investigation Clinique1418, module Épidémiologie Clinique, HEGP, Paris, France
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Srikanth N, Xie L, Morales-Marroquin E, Ofori A, de la Cruz-Muñoz N, Messiah SE. Intersection of smoking, e-cigarette use, obesity, and metabolic and bariatric surgery: a systematic review of the current state of evidence. J Addict Dis 2021; 39:331-346. [PMID: 33543677 DOI: 10.1080/10550887.2021.1874817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Millions of Americans qualify for metabolic and bariatric surgery (MBS) based on the proportion of the population with severe obesity. Simultaneously, the use of electronic nicotine/non-nicotine delivery systems (ENDS) has become epidemic. OBJECTIVE We conducted a timely systematic review to examine the impact of tobacco and ENDS use on post-operative health outcomes among MBS patients. METHODS PRISMA guidelines were used as the search framework. Keyword combinations of either "smoking," "tobacco," "e-cigarette," "vaping," or "ENDS" and "bariatric surgery," "RYGB," or "sleeve gastrectomy" were used as search terms in PUBMED, Science Direct, and EMBASE. Studies published in English between January 1990 and June 2020 were screened. RESULTS From the 3251 articles found, a total of 48 articles were included in the review. No articles described a relationship between ENDS and post-operative health outcomes in MBS patients. Seven studies reported smokers had greater post-MBS weight loss, six studies suggested no relationship between smoking and post-MBS weight loss, and one study reported smoking cessation pre-MBS was related to post-MBS weight gain. Perioperative use of tobacco is positively associated with several post-surgery complications and mortality in MBS patients. CONCLUSIONS Combustible tobacco use among MBS patients is significantly related to higher mortality risk and complication rates, but not weight loss. No data currently is available on the impact of ENDS use in these patients. With ENDS use at epidemic levels, it is imperative to determine any potential health effects among patients with severe obesity, and who complete MBS.
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Affiliation(s)
- Nimisha Srikanth
- School of Public Health, Dallas Regional Campus, University of Texas Health Science Center, Dallas, TX, USA.,Center for Pediatric Population Health, UTHealth School of Public Health and Children's Health System of Texas, Dallas, TX, USA.,School of Public Health, Texas A&M University, College Station, TX, USA
| | - Luyu Xie
- School of Public Health, Dallas Regional Campus, University of Texas Health Science Center, Dallas, TX, USA.,Center for Pediatric Population Health, UTHealth School of Public Health and Children's Health System of Texas, Dallas, TX, USA
| | - Elisa Morales-Marroquin
- School of Public Health, Dallas Regional Campus, University of Texas Health Science Center, Dallas, TX, USA.,Center for Pediatric Population Health, UTHealth School of Public Health and Children's Health System of Texas, Dallas, TX, USA
| | - Ashley Ofori
- School of Public Health, Dallas Regional Campus, University of Texas Health Science Center, Dallas, TX, USA.,Center for Pediatric Population Health, UTHealth School of Public Health and Children's Health System of Texas, Dallas, TX, USA
| | | | - Sarah E Messiah
- School of Public Health, Dallas Regional Campus, University of Texas Health Science Center, Dallas, TX, USA.,Center for Pediatric Population Health, UTHealth School of Public Health and Children's Health System of Texas, Dallas, TX, USA
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Martin-Fernandez KW, Marek RJ, Heinberg LJ, Ben-Porath YS. Six-year bariatric surgery outcomes: the predictive and incremental validity of presurgical psychological testing. Surg Obes Relat Dis 2021; 17:1008-1016. [PMID: 33640259 DOI: 10.1016/j.soard.2021.01.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 01/05/2021] [Accepted: 01/17/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Research identifying preoperative psychosocial predictors of bariatric surgery outcomes has yielded inconsistent results with minimal examination of longer-term outcomes. Utilizing a broadband measure of personality and psychopathology during the preoperative evaluation helps to identify preoperative risk factors for suboptimal bariatric surgery outcomes. OBJECTIVE Examine predictors of outcome and the incremental contribution of presurgical psychological testing to various long-term bariatric surgery outcomes. SETTING Academic medical center. METHOD A total of 168 postoperative patients (average of 6 postoperative years) consented to participate in the outcome study. Participants were weighed by the trained research/clinical staff and completed a battery of self-report questionnaires, including measures assessing eating attitudes and behaviors and weight-related quality-of-life (QoL). Patients had completed the Minnesota Multiphasic Personality Inventory-2-Restructured Form (MMPI-2-RF) as part of the institution's routine preoperative psychosocial evaluation. Weight loss was calculated as percent total weight loss (%TWL) and percent weight regain (%WR) was calculated as a percentage of maximum weight loss. Other preoperative data were obtained from a review of each patient's electronic medical record (EMR). From the initial sample, 145 patients were retained for analyses in the present study. RESULTS Preoperative problematic eating variables predicted long-term postoperative problematic eating behaviors and body image concerns. Scores on preoperative MMPI-2-RF scales measuring Demoralization, Dysfunctional Negative Emotions, Antisocial Behaviors, and Hypomanic Activation were consistent incremental predictors of 6-year outcomes, accounting for an additional 3%-24% of the variability in postoperative eating behaviors and QoL. CONCLUSIONS The preoperative psychological evaluation can be used to identify predictors of long-term bariatric surgery outcomes. Identification of these risk factors provides important targets for pre- and postoperative clinical interventions to maximize surgical outcomes.
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Affiliation(s)
| | - Ryan J Marek
- Department of Primary Care, Sam Houston State University College of Osteopathic Medicine, Conroe, Texas
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Wolvers PJD, Ayubi O, Bruin SC, Hutten BA, Brandjes DPM, Meesters EW, Gerdes VEA. Smoking Behaviour and Beliefs About Smoking Cessation After Bariatric Surgery. Obes Surg 2021; 31:239-249. [PMID: 32803711 PMCID: PMC7808968 DOI: 10.1007/s11695-020-04907-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 08/01/2020] [Accepted: 08/06/2020] [Indexed: 12/31/2022]
Abstract
PURPOSE Currently, bariatric surgery is the most effective intervention for treating morbid obesity and its complications. Smoking cessation is likely to improve smoking-related comorbidities and decrease postoperative complications. This study evaluated the smoking behaviour and thoughts about smoking cessation of patients more than 18 months after bariatric surgery. MATERIALS AND METHODS A cross-sectional study was performed in patients who underwent bariatric surgery from July 2012 to December 2013. A questionnaire was used to evaluate smoking status, thoughts about the health benefits of cessation and characteristics of previous quit attempts in current and former smokers. Finally, actual bariatric surgery outcomes were evaluated in current, former and never smokers. RESULTS Six hundred nine patients (response rate 52.0%) were included. Of them, 101 (16.6%) patients were current smokers, 239 (39.2%) former smokers and 269 (44.2%) patients were lifetime never smokers. Compared with former smokers, current smokers were less aware of the beneficial effects of smoking cessation on their general health; 66.4% of the former smokers thought smoking cessation would be much better for general health, compared with 20.6% of current smokers. Total weight loss was 2.8% higher in current smokers compared with former smokers. Actual long-term bariatric surgery outcomes were not significantly different between the groups. CONCLUSION Despite advice to quit smoking and temporary quitting before surgery, a considerable group of bariatric surgery patients continues smoking after surgery. These patients were less aware of the beneficial effects of smoking cessation. This study emphasizes the need for better strategies to increase the number of successful cessations.
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Affiliation(s)
- Paula J. D. Wolvers
- Department of Vascular Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
| | - Oranos Ayubi
- Department of Vascular Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
| | - Sjoerd C. Bruin
- Department of Surgery, Spaarne Gasthuis, Spaarnepoort 1, 2134 TM Hoofddorp, Netherlands
| | - Barbara A. Hutten
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
| | - Dees P. M. Brandjes
- Department of Vascular Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
| | - Eelco W. Meesters
- Department of Internal Medicine, Spaarne Gasthuis, Spaarnepoort 1, 2134 TM Hoofddorp, Netherlands
| | - Victor E. A. Gerdes
- Department of Vascular Medicine, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
- Department of Internal Medicine, Spaarne Gasthuis, Spaarnepoort 1, 2134 TM Hoofddorp, Netherlands
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Dent R, McPherson R, Harper ME. Factors affecting weight loss variability in obesity. Metabolism 2020; 113:154388. [PMID: 33035570 DOI: 10.1016/j.metabol.2020.154388] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/19/2020] [Accepted: 09/23/2020] [Indexed: 12/25/2022]
Abstract
Current obesity treatment strategies include diet, exercise, bariatric surgery, and a limited but growing repertoire of medications. Individual weight loss in response to each of these strategies is highly variable. Here we review research into factors potentially contributing to inter-individual variability in response to treatments for obesity, with a focus on studies in humans. Well-recognized factors associated with weight loss capacity include diet adherence, physical activity, sex, age, and specific medications. However, following control for each of these, differences in weight loss appear to persist in response to behavioral, pharmacological and surgical interventions. Adaptation to energy deficit involves complex feedback mechanisms, and inter-individual differences likely to arise from a host of poorly defined genetic factors, as well as differential responses in neurohormonal mechanisms (including gastrointestinal peptides), metabolic efficiency and capacity of tissues, non-exercise activity thermogenesis, thermogenic response to food, and in gut microbiome. A better understanding of the factors involved in inter-individual variability in response to therapies will guide more personalized approaches to the treatment of obesity.
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Affiliation(s)
- Robert Dent
- Department of Medicine, Division of Endocrinology and The Ottawa Hospital, University of Ottawa, 210 Melrose Ave, Ottawa, ON K1Y 4K7, Canada
| | - Ruth McPherson
- Atherogenomics Laboratory, Division of Cardiology, University of Ottawa Heart Institute, 40 Ruskin St., Ottawa, ON K1Y 4W7, Canada
| | - Mary-Ellen Harper
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology, University of Ottawa, 451 Smyth Rd., Ottawa, ON K1H 8M5, Canada.
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Self-Reported Smoking Compared to Serum Cotinine in Bariatric Surgery Patients: Smoking Is Underreported Before the Operation. Obes Surg 2020; 30:23-37. [PMID: 31512159 DOI: 10.1007/s11695-019-04128-4] [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: 12/29/2022]
Abstract
BACKGROUND Smoking has been associated with postoperative complications and mortality in bariatric surgery. The evidence for smoking is based on self-report and medical charts, which can lead to misclassification and miscalculation of the associations. Determination of cotinine can objectively define nicotine exposure. We determined the accuracy of self-reported smoking compared to cotinine measurement in three phases of the bariatric surgery trajectory. METHODS Patients in the phase of screening (screening), on the day of surgery (surgery), and more than 18 months after surgery (follow-up) were consecutively selected. Self-reported smoking was registered and serum cotinine was measured. We evaluated the accuracy of self-reported smoking compared to cotinine, and the level of agreement between self-report and cotinine for each phase. RESULTS In total, 715 patients were included. In the screening, surgery, and follow-up group, 25.6%, 18.0%, and 15.5%, respectively, was smoking based on cotinine. The sensitivity of self-reported smoking was 72.5%, 31.0%, and 93.5% in the screening, surgery, and follow-up group, respectively (p < 0.001). The specificity of self-report was > 95% in all groups (p < 0.02). The level of agreement between self-report and cotinine was 0.778, 0.414, and 0.855 for the screening, surgery, and follow-up group, respectively. CONCLUSIONS Underreporting of smoking occurs before bariatric surgery, mainly on the day of surgery. Future studies on effects of smoking and smoking cessation in bariatric surgery should include methods taking into account the issue of underreporting.
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Brunaldi VO, Farias GFA, de Rezende DT, Cairo-Nunes G, Riccioppo D, de Moura DTH, Santo MA, de Moura EGH. Argon plasma coagulation alone versus argon plasma coagulation plus full-thickness endoscopic suturing to treat weight regain after Roux-en-Y gastric bypass: a prospective randomized trial (with videos). Gastrointest Endosc 2020; 92:97-107.e5. [PMID: 32217111 DOI: 10.1016/j.gie.2020.03.3757] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/16/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS A significant number of patients regain weight after Roux-en-Y gastric bypass. Ablation with argon plasma coagulation (APC) plus endoscopic full-thickness suturing (FTS-APC) and ablation alone have been reported for treating weight regain when associated with gastrojejunostomy (GJ) dilation. However, comparative controlled data are still lacking. METHODS This was a pilot single-center open-label randomized trial comparing the effectiveness and safety of APC alone versus FTS-APC for transoral outlet reduction. Patients with at least 20% weight regain from the nadir, and GJ ≥15 mm were considered eligible. The primary outcome was percentage total weight loss (%TWL) at 12 months. Secondary outcomes were the incidence of adverse events, amelioration of metabolic laboratory parameters, and improvement in quality of life and eating behavior. RESULTS Forty patients meeting the eligibility criteria were enrolled from October 2017 to July 2018. Technical and clinical success rates were similar between the groups. At 12 months, the mean %TWL was 8.3% ± 5.5% in the APC alone group versus 7.5% ± 7.7% in the FTS-APC group (P = .71). The pre-revisional % solid gastric retention at 1 hour positively correlated with the probability of achieving ≥10% TWL at 12 months. Both groups experienced significant reductions in low-density lipoprotein and triglyceride levels at 12 months, and improvement in eating behavior and quality of life at 3 months. There were 2 cases of stenoses (1 from each group), which were successfully treated with endoscopic balloon dilation. CONCLUSION APC alone is similar to FTS-APC in terms of technical and clinical outcomes within 1 year of follow-up. (Clinical trial registration number: NCT03094936.).
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Affiliation(s)
- Vitor Ottoboni Brunaldi
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil; Center for Gastrointestinal Endoscopy, Surgery and Anatomy Department, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Galileu Ferreira Ayala Farias
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Daniel Tavares de Rezende
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Gabriel Cairo-Nunes
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Daniel Riccioppo
- Bariatric and Metabolic Surgery Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Marco Aurelio Santo
- Bariatric and Metabolic Surgery Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
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Abstract
Abstract
Introduction
The prevalence and clinical significance of weight regain after bariatric surgery remains largely unclear due to the lack of a standardized definition of significant weight regain. The development of a clinically relevant definition of weight regain requires a better understanding of its clinical significance.
Objectives
To assess rates of weight regain 5 years after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG), applying six definitions and investigating their association with clinical outcomes.
Methods
Patients were followed up until 5 years after surgery and weight regain was calculated. Regression techniques were used to assess the association of weight regain with health-related quality of life (HRQoL) and the presence of comorbidities.
Results
A total of 868 patients participated in the study, with a mean age of 46.6 (± 10.4) years, of which 79% were female. The average preoperative BMI was 44.8 (± 5.9) kg/m2 and the total maximum weight loss was 32% (± 8%). Eighty-seven percent experienced any regain. Significant weight regain rates ranged from 16 to 37% depending on the definition. Three weight regain definitions were associated with deterioration in physical HRQoL (p < 0.05), while associations between definitions of weight regain and the presence of comorbidities 5 years after surgery were not significant.
Conclusion
These results indicate that identifying one single categorical definition of clinically significant weight regain is difficult. Additional research into the clinical significance of weight regain is needed to inform the development of a standardized definition that includes all dimensions of surgery success: weight, HRQoL, and comorbidity remission.
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Brief Report: Pupillometry, Visual Perception, and ASD Features in a Task-Switching Paradigm. J Autism Dev Disord 2019; 49:5086-5099. [DOI: 10.1007/s10803-019-04213-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Bomberg EM, Ryder JR, Brundage RC, Straka RJ, Fox CK, Gross AC, Oberle MM, Bramante CT, Sibley SD, Kelly AS. Precision medicine in adult and pediatric obesity: a clinical perspective. Ther Adv Endocrinol Metab 2019; 10:2042018819863022. [PMID: 31384417 PMCID: PMC6661805 DOI: 10.1177/2042018819863022] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 06/19/2019] [Indexed: 12/13/2022] Open
Abstract
It remains largely unknown as to why some individuals experience substantial weight loss with obesity interventions, while others receiving these same interventions do not. Person-specific characteristics likely play a significant role in this heterogeneity in treatment response. The practice of precision medicine accounts for an individual's genes, environment, and lifestyle when deciding upon treatment type and intensity in order to optimize benefit and minimize risk. In this review, we first discuss biopsychosocial determinants of obesity, as understanding the complexity of this disease is necessary for appreciating how difficult it is to develop individualized treatment plans. Next, we present literature on person-specific characteristics associated with, and predictive of, weight loss response to various obesity treatments including lifestyle modification, pharmacotherapy, metabolic and bariatric surgery, and medical devices. Finally, we discuss important gaps in our understanding of the causes of obesity in relation to the suboptimal treatment outcomes in certain patients, and offer solutions that may lead to the development of more effective and targeted obesity therapies.
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Affiliation(s)
- Eric M. Bomberg
- Department of Pediatrics and Center for
Pediatric Obesity Medicine, University of Minnesota, Minneapolis, 717
Delaware Street SE, Room 371, Minneapolis, MN 55414, USA
| | - Justin R. Ryder
- Department of Pediatrics, University of
Minnesota, Minneapolis, MN, USA
- Center for Pediatric Obesity Medicine,
University of Minnesota, Minneapolis, MN, USA
| | - Richard C. Brundage
- Department of Experimental and Clinical
Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Robert J. Straka
- Department of Experimental and Clinical
Pharmacology, University of Minnesota, Minneapolis, MN, USA
| | - Claudia K. Fox
- Department of Pediatrics, University of
Minnesota, Minneapolis, MN, USA
- Center for Pediatric Obesity Medicine,
University of Minnesota, Minneapolis, MN, USA
| | - Amy C. Gross
- Department of Pediatrics, University of
Minnesota, Minneapolis, MN, USA
- Center for Pediatric Obesity Medicine,
University of Minnesota, Minneapolis, MN, USA
| | - Megan M. Oberle
- Department of Pediatrics, University of
Minnesota, Minneapolis, MN, USA
- Center for Pediatric Obesity Medicine,
University of Minnesota, Minneapolis, MN, USA
| | - Carolyn T. Bramante
- Department of Pediatrics, University of
Minnesota, Minneapolis, MN, USA
- Center for Pediatric Obesity Medicine,
University of Minnesota, Minneapolis, MN, USA
- Department of Medicine, University of
Minnesota, Minneapolis, MN, USA
| | | | - Aaron S. Kelly
- Department of Pediatrics, University of
Minnesota, Minneapolis, MN, USA
- Center for Pediatric Obesity Medicine,
University of Minnesota, Minneapolis, MN, USA
- Department of Medicine, University of
Minnesota, Minneapolis, MN, USA
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Justinussen T, Madsbad S, Holst JJ, Bojsen-Møller KN. Pros and cons of Roux en-Y gastric bypass surgery in obese patients with type 2 diabetes. Expert Rev Endocrinol Metab 2019; 14:243-257. [PMID: 31215828 DOI: 10.1080/17446651.2019.1628639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/04/2019] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The worldwide prevalence of obesity and type 2 diabetes (T2D) constitutes an epidemic that is a threat to public health. Bariatric surgery, including Roux en-Y gastric bypass (RYGB), is currently the most effective treatment to induce long-term weight loss and remission of co-morbid conditions. Surgery, however, comes with an added risk of complications, highlighting the need to understand the comparative effectiveness and risks of surgical versus conventional approaches to the treatment of obesity and T2D. AREAS COVERED Positive and negative outcomes of RYGB surgery in patients with T2D are assessed, with a primary focus on RYGB surgery versus standard non-surgical treatment of obese patients with T2D in randomized clinical trials or high-quality observational cohorts. Searches were conducted in the PubMed database up to 11 April 2019 for relevant studies. EXPERT OPINION High-level evidence reveals that RYGB ameliorates the clinical manifestations of T2D to a significantly higher degree than medical therapy. Postoperative incidence of beneficial effects and complications, however, differ across subgroups of patients with different preoperative characteristics. Key knowledge gaps, particularly on long-term complications, microvascular- and macrovascular events, and mortality should be addressed, so treatment with RYGB can be applied in an individualized approach to maximize benefits and minimize complications.
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Affiliation(s)
- Tummas Justinussen
- a Department of Endocrinology , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
- b Novo Nordisk Foundation Centre for Basic Metabolic Research , University of Copenhagen , Copenhagen , Denmark
| | - Sten Madsbad
- a Department of Endocrinology , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
- b Novo Nordisk Foundation Centre for Basic Metabolic Research , University of Copenhagen , Copenhagen , Denmark
| | - Jens Juul Holst
- b Novo Nordisk Foundation Centre for Basic Metabolic Research , University of Copenhagen , Copenhagen , Denmark
- c Department of Biomedical Sciences, Faculty of Health , University of Copenhagen , Copenhagen , Denmark
| | - Kirstine Nyvold Bojsen-Møller
- a Department of Endocrinology , Copenhagen University Hospital Hvidovre , Hvidovre , Denmark
- b Novo Nordisk Foundation Centre for Basic Metabolic Research , University of Copenhagen , Copenhagen , Denmark
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