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Luna-Marco, Clara; de Marañon, Arantxa M.; Hermo-Argibay, Alberto; Rodriguez-Hernandez, Yohaly; Hermenejildo, Jonathan; Fernandez-Reyes, Meylin; Apostolova, Nadezda; Vila, Jose; Sola, Eva; Morillas, Carlos; Rovira-Llopis, Susana; Rocha, Milagros; Victor, Victor M.
Redox biology, 10/2023, Volume: 66Journal Article
Type 2 diabetes (T2D) is linked to metabolic, mitochondrial and inflammatory alterations, atherosclerosis development and cardiovascular diseases (CVDs). The aim was to investigate the potential therapeutic benefits of GLP-1 receptor agonists (GLP-1 RA) on oxidative stress, mitochondrial respiration, leukocyte-endothelial interactions, inflammation and carotid intima–media thickness (CIMT) in T2D patients. Type 2 diabetic patients (255) and control subjects (175) were recruited, paired by age and sex, and separated into two groups: without GLP-1 RA treatment (196) and treated with GLP-1 RA (59). Peripheral blood polymorphonuclear leukocytes (PMNs) were isolated to measure reactive oxygen species (ROS) production by flow cytometry and oxygen consumption with a Clark electrode. PMNs were also used to assess leukocyte-endothelial interactions. Circulating levels of adhesion molecules and inflammatory markers were quantified by Luminex's technology, and CIMT was measured as surrogate marker of atherosclerosis. Treatment with GLP-1 RA reduced ROS production and recovered mitochondrial membrane potential, oxygen consumption and MPO levels. The velocity of leukocytes rolling over endothelial cells increased in PMNs from GLP-1 RA-treated patients, whereas rolling and adhesion were diminished. ICAM-1, VCAM-1, IL-6, TNFα and IL-12 protein levels also decreased in the GLP-1 RA-treated group, while IL-10 increased. CIMT was lower in GLP-1 RA-treated T2D patients than in T2D patients without GLP-1 RA treatment. GLP-1 RA treatment improves the redox state and mitochondrial respiration, and reduces leukocyte-endothelial interactions, inflammation and CIMT in T2D patients, thereby potentially diminishing the risk of atherosclerosis and CVDs. Display omitted •Risk of atherosclerosis and cardiovascular diseases is higher in type 2 diabetes.•The question was to investigate GLP-1 RA benefits on diabetes-related factors.•GLP-1 RA improved the redox state and mitochondrial respiration of leukocytes.•GLP-1 RA diminished leukocyte-endothelial interactions, inflammation and CIMT.•The risk of cardiovascular diseases could be reduced with GLP-1 RA treatment.
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