Different Malabsorptive Obesity Surgery Interventions Result in Distinct Postprandial Amino Acid Metabolomic Signatures

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ORIGINAL CONTRIBUTIONS

Different Malabsorptive Obesity Surgery Interventions Result in Distinct Postprandial Amino Acid Metabolomic Signatures Sofia S. Pereira 1,2,3,4 & Ivana Jarak 5 & Rui A. Carvalho 6 & Pedro F. Oliveira 7 & Marco G. Alves 5 & Marta Guimarães 1,2,8 & Rui Almeida 8 & Ana M. Pereira 8 & Nicolai J. Wewer Albrechtsen 9,10,11 & Jens J. Holst 9,10 & Mário Nora 8 & Mariana P. Monteiro 1,2 Received: 02 April 2020 / Revised: 05 June 2020 / Accepted: 05 June 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020

Abstract Purpose Biliopancreatic diversion with duodenal switch (BPD-DS) is an effective weight loss surgical procedure. Yet, BPD-DS is technically difficult to perform and carries a higher risk of nutrient deficiencies as compared with other surgical interventions. Single-anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is a modified BPD-DS procedure conceived with the aim of decreasing the technical complexity, while retaining the weight loss efficiency. Whether the two surgical procedures diverge in nutrient absorption rates and malnutrition risk is still matter of debate. Our aim was to determine if postprandial nutrient absorption rates are different in patients subjected to BPD-DS or SADI-S for weight loss. Materials and Methods Plasma amino acid metabolomic profiling during mixed-meal tolerance test (MMTT) was performed in subjects (N = 18) submitted to BPD-DS (n = 9) or SADI-S (n = 9) 1.6 ± 0.1 years earlier. Results Patients submitted to SADI-S or BPD-DS presented distinct postprandial metabolomic profiles. Postprandial excursions of total and essential amino acids—leucine, isoleucine, and valine—were higher after SADI-S as compared with BPD-DS. Conclusion Our study demonstrates that a simplified malabsorptive bariatric surgery procedure SADI-S results in greater essential branched-chain amino acid absorption when compared with the classical BPD-DS intervention. These findings suggest that SADI-S can potentially lower lifetime risk of postoperative protein malnutrition, as well as have a positive impact on systemic metabolism and glucose homeostasis. Keywords Malabsorptive bariatric surgeries . BPD-DS . SADI-S . Metabolomics . Amino acid absorption

Sofia S. Pereira and Ivana Jarak contributed equally to this work. * Mariana P. Monteiro [email protected] Sofia S. Pereira [email protected] Ivana Jarak [email protected] Rui A. Carvalho [email protected] Pedro F. Oliveira [email protected] Marco G. Alves [email protected] Marta Guimarães [email protected]

Rui Almeida [email protected] Ana M. Pereira [email protected] Nicolai J. Wewer Albrechtsen [email protected] Jens J. Holst [email protected] Mário Nora [email protected] Extended author information available on the last page of the article

OBES SURG

Introduction Obesity prevalence increased exponentially over the last decades being currently a major public health concern [1]. Moreover, morbid obesity rates that carry a high risk of comorbid conditions