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. 2023;147(9):560-571.
doi: 10.1159/000531334. Epub 2023 Jun 5.

Inflammation on the Waiting List Is a Risk Factor for New-Onset Prediabetes and Post-Transplant Diabetes Mellitus: A Prospective Study

Alejandra González Delgado  1 , Arminda Fariña Hernández  2 , Domingo Marrero  2 , Andrés Franco Maside  3 , Grimanesa Hernández Barroso  1 , Estefania Pérez Carreño  4 , Cristian Acosta Sørensen  2 , Ana Elena Rodríguez-Rodríguez  4 , Tatiana Collantes  5 , Rodríguez Anabel  6 , Carla Rodríguez Álvarez  6 , Antonio Rivero  6 , Alejandro Jiménez Sosa  2 , Manuel Macia  6 , Elena Terán García  2 , Alejandra Álvarez González  2 , Ana González Rinne  2 , Aurelio Rodríguez  2 , Eduardo De Bonis Redondo  2 , Concepción Rodríguez Adanero  2 , Domingo Hernández  7 , Armando Torres Ramírez  2   8 , Esteban Porrini  2   8
Affiliations

Inflammation on the Waiting List Is a Risk Factor for New-Onset Prediabetes and Post-Transplant Diabetes Mellitus: A Prospective Study

Alejandra González Delgado et al. Nephron. 2023.

Abstract

Introduction: Inflammation is a risk factor for diabetes in the general population. The role of inflammation in prediabetes or post-transplant diabetes mellitus (PTDM) is not clear. We evaluated the association between inflammatory markers in patients on the waiting list for renal transplantation and the onset of prediabetes and PTDM 12 months after transplantation.

Methods: This is a post hoc analysis of a prospective study that included nondiabetic patients on the waiting list for kidney transplantation who underwent an oral glucose tolerance test (OGTT) and were followed up to 12 months after transplantation. At this time, those patients without PTDM underwent another OGTT. At pre-transplantation, five cytokines: TNFα, IL6, IL1β, CRP, MCP1 were determined. The association between inflammation and prediabetes/PTDM was evaluated using multiple regression models.

Results: 110 patients on the waiting list were enrolled: 74 had normal glucose metabolism and 36 had prediabetes or occult diabetes. At 12 months, 53 patients had normal glucose metabolism, 25 prediabetes, and 32 PTDM. In multiple regression analysis, pre-transplant inflammation was not a risk factor for prediabetes or PTDM. This was attributed to the high interrelation between obesity, prediabetes, and inflammation: about 75% of the cases had these conditions. In a sub-analysis, we analyzed only patients without prediabetes and occult diabetes on the waiting list and found that TNFα levels and BMI at pre-transplantation were independently associated with the onset of prediabetes or PTDM 1 year after transplantation.

Conclusions: Pre-transplant inflammation and BMI are risk factors for prediabetes and PTDM in patients without glucose metabolism alterations.

Keywords: Diabetes; Inflammation; Obesity; Prediabetes; Transplantation.

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