Different effects of anthocyanins and phenolic acids from wild blueberry (Vaccinium angustifolium) on monocytes adhesion to endothelial cells in a TNF-α stimulated proinflammatory environment

TY - JOUR

T1 - Different effects of anthocyanins and phenolic acids from wild blueberry (Vaccinium angustifolium) on monocytes adhesion to endothelial cells in a TNF-α stimulated proinflammatory environment

AU - Del Bo', Cristian

AU - Roursgaard, Martin

AU - Porrini, Marisa

AU - Loft, Steffen

AU - Møller, Peter

AU - Riso, Patrizia

PY - 2016/11/1

Y1 - 2016/11/1

N2 - Scope: Monocyte adhesion to the vascular endothelium is a crucial step in the early stages of atherogenesis. This study aims to investigate the capacity of an anthocyanin (ACN) and phenolic acid (PA) rich fraction (RF) of a wild blueberry, single ACNs (cyanidin, malvidin, delphinidin) and related metabolites (protocatechuic, syringic, and gallic acid) to counteract monocytes (THP-1) adhesion to human umbilical vein endothelial cells (HUVECs) in a tumor necrosis factor α (TNF-α) mediated proinflammatory environment. Methods and results: HUVECs were incubated with different concentrations (from 0.01 to 10 μg/mL) of the compounds for 24 h. Labeled monocytic THP-1 cells were added to HUVECs and their adhesion was induced by TNF-α (100 ng/mL). ACN-RF reduced THP-1 adhesion to HUVECs with a maximum effect at 10 μg/mL (−33%). PA-RF counteracted THP-1 adhesion at 0.01, 0.1, and 1 μg/mL (−45, −48.7, and −27.6%, respectively), but not at maximum concentration. Supplementation with gallic acid reduced THP-1 adhesion to HUVECs with a maximum effect at 1 μg/mL (−29.9%), while malvidin-3-glucoside and syringic acid increased the adhesion. No effect was observed for the other compounds. Conclusion: These results suggest that ACNs/PA-RF may prevent atherogenesis while the effects of the single ACNs and metabolites are controversial and merit further exploration.

AB - Scope: Monocyte adhesion to the vascular endothelium is a crucial step in the early stages of atherogenesis. This study aims to investigate the capacity of an anthocyanin (ACN) and phenolic acid (PA) rich fraction (RF) of a wild blueberry, single ACNs (cyanidin, malvidin, delphinidin) and related metabolites (protocatechuic, syringic, and gallic acid) to counteract monocytes (THP-1) adhesion to human umbilical vein endothelial cells (HUVECs) in a tumor necrosis factor α (TNF-α) mediated proinflammatory environment. Methods and results: HUVECs were incubated with different concentrations (from 0.01 to 10 μg/mL) of the compounds for 24 h. Labeled monocytic THP-1 cells were added to HUVECs and their adhesion was induced by TNF-α (100 ng/mL). ACN-RF reduced THP-1 adhesion to HUVECs with a maximum effect at 10 μg/mL (−33%). PA-RF counteracted THP-1 adhesion at 0.01, 0.1, and 1 μg/mL (−45, −48.7, and −27.6%, respectively), but not at maximum concentration. Supplementation with gallic acid reduced THP-1 adhesion to HUVECs with a maximum effect at 1 μg/mL (−29.9%), while malvidin-3-glucoside and syringic acid increased the adhesion. No effect was observed for the other compounds. Conclusion: These results suggest that ACNs/PA-RF may prevent atherogenesis while the effects of the single ACNs and metabolites are controversial and merit further exploration.

U2 - 10.1002/mnfr.201600178

DO - 10.1002/mnfr.201600178

M3 - Journal article

C2 - 27324255

SN - 1613-4125

VL - 60

SP - 2355

EP - 2366

JO - Molecular Nutrition & Food Research

JF - Molecular Nutrition & Food Research

IS - 11

ER -