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Review
. 2017 Mar:68:133-144.
doi: 10.1016/j.metabol.2016.12.009. Epub 2016 Dec 18.

Metabolic endotoxemia and diabetes mellitus: A systematic review

Júnia Maria Geraldo Gomes  1 , Jorge de Assis Costa  2 , Rita de Cássia Gonçalves Alfenas  2
Affiliations
Review

Metabolic endotoxemia and diabetes mellitus: A systematic review

Júnia Maria Geraldo Gomes et al. Metabolism. 2017 Mar.

Abstract

In this systematic review we analyzed studies that assessed serum concentrations of lipopolysaccharide (LPS) and/or lipopolysacharide-binding protein (LBP) in diabetic patients compared with healthy people. Articles were selected using PubMed and Scopus. Search terms used were endotoxemia, endotoxins, LPS, LBP, diabetes mellitus (DM), type 1 (T1DM), type 2 (T2DM), insulin resistance, humans, epidemiologic studies, population-based, survey, representative, cross-sectional, case-control studies, observational, and clinical trials. Two authors independently extracted articles using predefined data fields, including study quality indicators. There was a great variability in the estimates of metabolic endotoxemia among the studies. Most of the studies observed higher LPS or LBP concentrations in diabetic subjects than in healthy controls. T1DM and T2DM subjects presented higher mean fasting LPS of 235.7% and 66.4% compared with non-diabetic subjects, respectively. Advanced complications (e.g. macroalbuminuria) and disease onset exacerbate endotoxemia. Antidiabetic medications decrease fasting LPS concentrations. Among these medications, rosiglitazone and insulin present higher and lower effects, respectively, compared with other treatments. T1DM and T2DM seem to increase metabolic endotoxemia. However, some confounders such as diet, age, medication, smoking and obesity influence both diabetes and endotoxemia manifestation. A better understanding of the interaction of these factors is still needed.

Keywords: Diabetes mellitus; Endotoxin; Insulin resistance; Lipopolysaccharide; Lipopolysaccharide-binding protein.

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