PMID- 34378729 OWN - NLM STAT- MEDLINE DCOM- 20210927 LR - 20220629 IS - 1980-5322 (Electronic) IS - 1807-5932 (Print) IS - 1807-5932 (Linking) VI - 76 DP - 2021 TI - C-peptide level as predictor of type 2 diabetes remission and body composition changes in non-diabetic and diabetic patients after Roux-en-Y gastric bypass. PG - e2906 LID - 10.6061/clinics/2021/e2906 [doi] LID - e2906 AB - OBJECTIVES: Several predictors of type 2 diabetes mellitus (T2DM) remission after metabolic surgery have been proposed and used to develop predictive scores. These scores may not be reproducible in diverse geographic regions with different baseline characteristics. This study aimed to identify predictive factors associated with T2DM remission after Roux-en-Y gastric bypass (RYGB) in patients with severe obesity. We hypothesized that the body composition alterations induced by bariatric surgery could also contribute to diabetes remission. METHODS: We retrospectively evaluated 100 patients with severe obesity and T2DM who underwent RYGB between 2014 and 2016 for preoperative factors (age, diabetes duration, insulin use, HbA1c, C-peptide plasma level, and basal insulinemia) to identify predictors of T2DM remission (glycemia<126 mg/dL and/or HbA1c<6.5%) at 3 years postoperatively. The potential preoperative predictors were prospectively applied to 20 other patients with obesity and T2DM who underwent RYGB for validation. In addition, 81 patients with severe obesity (33 with T2DM) underwent body composition evaluations by bioelectrical impedance analysis (InBody 770(R)) 1 year after RYGB for comparison of body composition changes between patients with and those without T2DM. RESULTS: The retrospective analysis identified only a C-peptide level >3 ng/dL as a positive predictor of 3-year postoperative diabetes remission, which was validated in the prospective phase. There was a significant difference in the postoperative body composition changes between non-diabetic and diabetic patients only in trunk mass. CONCLUSION: Preoperative C-peptide levels can be useful for predicting T2DM remission after RYGB. Trunk mass is the most important difference in postoperative body composition changes between non-diabetic and diabetic patients. FAU - de Cleva, Roberto AU - de Cleva R AUID- ORCID: 0000-0001-8673-9014 AD - Departamento de Gastroenterologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR. FAU - Kawamoto, Flavio AU - Kawamoto F AUID- ORCID: 0000-0002-2391-2796 AD - Departamento de Gastroenterologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR. FAU - Borges, Georgia AU - Borges G AUID- ORCID: 0000-0002-2379-8604 AD - Departamento de Gastroenterologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR. FAU - Caproni, Priscila AU - Caproni P AUID- ORCID: 0000-0002-6427-193X AD - Departamento de Gastroenterologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR. FAU - Cassenote, Alex Jones Flores AU - Cassenote AJF AUID- ORCID: 0000-0002-5098-1922 AD - Departamento de Gastroenterologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR. FAU - Santo, Marco Aurelio AU - Santo MA AUID- ORCID: 0000-0002-7813-6210 AD - Departamento de Gastroenterologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210804 PL - United States TA - Clinics (Sao Paulo) JT - Clinics (Sao Paulo, Brazil) JID - 101244734 RN - 0 (C-Peptide) SB - IM MH - Body Composition MH - Body Mass Index MH - C-Peptide MH - Child, Preschool MH - *Diabetes Mellitus, Type 2 MH - *Gastric Bypass MH - Humans MH - *Obesity, Morbid/surgery MH - Prospective Studies MH - Remission Induction MH - Retrospective Studies MH - Treatment Outcome PMC - PMC8311643 COIS- No potential conflict of interest was reported. EDAT- 2021/08/12 06:00 MHDA- 2021/09/28 06:00 PMCR- 2021/07/26 CRDT- 2021/08/11 09:05 PHST- 2021/04/17 00:00 [received] PHST- 2021/06/11 00:00 [accepted] PHST- 2021/08/11 09:05 [entrez] PHST- 2021/08/12 06:00 [pubmed] PHST- 2021/09/28 06:00 [medline] PHST- 2021/07/26 00:00 [pmc-release] AID - S1807-5932(22)00185-5 [pii] AID - cln_76p1 [pii] AID - 10.6061/clinics/2021/e2906 [doi] PST - epublish SO - Clinics (Sao Paulo). 2021 Aug 4;76:e2906. doi: 10.6061/clinics/2021/e2906. eCollection 2021.