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Vitamin D3 mediated effects on postprandial leukocyte activation and arterial stiffness in men and women

Abstract

Postprandial inflammation is considered to be pro-atherogenic. Vitamin D can reduce inflammation and arterial stiffness. We hypothesized that vitamin D3 improves postprandial arterial elasticity by the modulation of leukocyte activation. Healthy volunteers underwent two oral fat-loading tests (OFLTs). The augmentation index (AIx) and flow cytometric quantification of leukocyte activation markers were measured. After the first OFLT, 100 000 IU of vitamin D3 was administered and a second OFLT was carried out 7 days later. Six men and six women were included. A favorable reduction in AIx was found after vitamin D3 supplementation (P=0.042) in both genders. After vitamin D3, exclusively in women a reduction in the area under the postprandial curve for monocytes CD11b and CD35 by 10.5% (P=0.016) and 12.5% (P=0.04) and neutrophil CD11b by 17.0% (P=0.014) was observed. In conclusion, vitamin D3 probably increased postprandial arterial elasticity in men and women, but reduced postprandial leukocyte activation exclusively in women.

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Correspondence to M Castro Cabezas.

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Klop, B., van de Geijn, GJ., Birnie, E. et al. Vitamin D3 mediated effects on postprandial leukocyte activation and arterial stiffness in men and women. Eur J Clin Nutr 68, 635–637 (2014). https://doi.org/10.1038/ejcn.2014.29

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