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J Sci Food Agric. 2013 Nov;93(14):3581-7. doi: 10.1002/jsfa.6328. Epub 2013 Sep 4.

Effects of bioactive-rich extracts of pomegranate, persimmon, nettle, dill, kale and Sideritis and isolated bioactives on arachidonic acid induced markers of platelet activation and aggregation.

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  • 1Institute for Medical Research, University of Belgrade, Belgrade, Serbia.

Abstract

BACKGROUND:

The beneficial effect of fruit- and vegetable-rich diets on cardiovascular health is partly attributed to the effect of their bioactive compounds on platelet function. The aim of this study was to investigate the effects of bioactive-rich plant extracts and isolated bioactive metabolites on platelet function. Blood samples from healthy subjects (n = 4) and subjects with metabolic syndrome (n = 4) were treated with six extracts of bioactive-rich plants consumed as traditional foods in the Black Sea region, or with human metabolites of the bioactives quercetin and sulforaphane. Markers of arachidonic acid induced platelet activation and platelet-leucocyte aggregation were assessed using flow cytometry.

RESULTS:

In subjects with metabolic syndrome, kale extract significantly inhibited agonist induced P-selectin expression (P = 0.004). Sulforaphane-cysteine-glycine, a human plasma metabolite of the related glucosinolate, glucoraphanin, significantly inhibited P-selectin and GPIIb-IIIa expression (P = 0.020 and 0.024, respectively) and platelet-neutrophil aggregation (P = 0.027). Additionally, pomegranate extract significantly inhibited GPIIb-IIIa expression (P = 0.046) in subjects with metabolic syndrome. In healthy subjects only dill extract significantly inhibited agonist induced P-selectin expression (P = 0.025).

CONCLUSION:

These data show that bioactive-rich extracts of kale and pomegranate that are consumed as traditional plant foods of Black Sea area countries were effective in modulating platelet function.

© 2013 Society of Chemical Industry.

KEYWORDS:

flow cytometry; in vitro; platelet activation; platelet aggregation; polyphenols

PMID:
23900938
[PubMed - indexed for MEDLINE]
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