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Oral fat load effects on inflammation and endothelial stress markers in healthy subjects

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Abstract

The aim was to study the effect of a standardized oral fat load (OFL) on different inflammatory parameters in a large sample of adult healthy subjects (n = 286) of both sexes. The fat load was given between 08:00 and 09:00 h after a 12-h fast. Blood samples were drawn before and 3, 6, 9, and 12 h after the OFL. All patients underwent a measurement of body mass index (BMI), blood glucose (BG), systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglycerides (Tg), soluble intercellular adhesion molecule-1 (sICAM-1), interleukin-6 (IL-6), high-sensitivity C-reactive protein (hsCRP), soluble vascular cell adhesion molecule-1 (sVCAM-1), soluble E-selectin (sE-selectin), and tumor necrosis factor-α (TNF-α). Fasting plasma glucose (FPG) increase was +3.26% at 3 h, +4.35% at 6 h, +1.09% at 9 h while FPG decrease was −1.09% at 12 h. High-density lipoprotein cholesterol increase was +2.08% at 3 h, and at 12 h during OFL study; a significant HDL-C decrease was present in subjects after 6 h (−4.17%; P < 0.05 vs 0). A significant Tg change was observed after 6 h (+70.37%; P < 0.01 vs 0) and 9 h (+58.33%; P < 0.05 vs 0) respectively, and the increase was +22.22% at 3 h and +18.52% at 12 h. Total cholesterol increase was +0.52% after 3 h, +1.04% after 6 h, while after 12 h the decrease was −0.52%. Low-density lipoprotein cholesterol increase was +1.64% after 6 h with a decrease of −0.82% at 9 and 12 h. A significant sICAM-1, hsCRP, and sE-selectin variation was observed after 6 and 9 h, while a significant sVCAM-1 change occurred after 3, 6, and 9 h. Soluble ICAM-1 increase was +20.58% at 3 h, +34.10% at 6 h (P < 0.05 vs 0) +25.94% at 9 h (P < 0.01 vs 0), and +19.14% at 12 h; sVCAM-1 increase was +13.97% (P < 0.05 vs 0) at 3 h, +18.55% at 6 h (P < 0.01 vs 0), +12.02% at 9 h (P < 0.05 vs 0), and +8.70% at 12 h. High-sensitivity CRP increase was +36.36% at 3 h, +90.91% at 6 h (P < 0.01 vs 0), +63.64% at 9 h (P < 0.05 vs 0), and +36.36% at 12 h. Soluble E-selectin increase was +27.11% at 3 h, +51.90% at 6 h (P < 0.05 vs 0), +45.19% at 9 h (P < 0.01 vs 0), and +20.12% at 12 h. Interleukin-6 increase was +61.11% at 3 h (P < 0.05 vs 0), +83.33% at 6 h (P < 0.001 vs 0), +55.56% at 9 h (P < 0.01 vs 0), and +22.22% at 12 h. Tumor necrosis factor-α increase was +42.86% at 3 h (P < 0.05 vs 0), +71.43% at 6 h (P < 0.01 vs 0), (+50.00% at 9 h (P < 0.05 vs 0), and +28.57% at 12 h. We observed that the OFL induces a complex and massive systemic inflammatory response that includes IL-6, TNF-α, hsCRP, and cell adhesion molecules, even before Tg significantly rises.

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Authors and Affiliations

  1. Department of Internal Medicine and Therapeutics, University of Pavia, Fondazione IRCCS, Policlinico San Matteo, P. le C. Golgi 2, 27100, Pavia, Italy

    Giuseppe Derosa, Ilaria Ferrari, Angela D’Angelo, Sibilla A. T. Salvadeo, Elena Fogari, Alessia Gravina, Roberto Mereu, Ilaria Palumbo, Pamela Maffioli & Sabrina Randazzo

  2. Aging and Kidney Disease Department, Internal Medicine, “G. Descovich” Atherosclerosis Study Center, University of Bologna, Bologna, Italy

    Arrigo F. G. Cicero

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  1. Giuseppe Derosa
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  2. Ilaria Ferrari
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Correspondence to Giuseppe Derosa.

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Derosa, G., Ferrari, I., D’Angelo, A. et al. Oral fat load effects on inflammation and endothelial stress markers in healthy subjects. Heart Vessels 24, 204–210 (2009). https://doi.org/10.1007/s00380-008-1109-y

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