Oleuropein and hydroxytyrosol inhibit the N-formyl-methionyl-leucyl-phenylalanine-induced neutrophil degranulation and chemotaxis via AKT, p38, and ERK1/2 MAP-Kinase inhibition
- 15.07.2017
- Original Article
Erschienen in:
- Verfasst von
- Samia Bedouhene
- Farida Moulti-Mati
- Pham My-Chan Dang
- Jamel El-Benna
- Erschienen in
- Inflammopharmacology | Ausgabe 6/2017
Abstract
Purpose
Oleuropein and hydroxytyrosol are polyphenols that are extracted from olives and are major biological active components of olives and olive oil. Oleuropein and hydroxytyrosol exhibit interesting pharmacological effects on cells, and have been shown to have many health benefits such as anti-inflammatory effects. These effects were mainly attributed to their ability to scavenge the reactive oxygen species (ROS) produced by phagocytes such as neutrophils. The aim of this study was to investigate the effect of oleuropein and hydroxytyrosol on other neutrophil functions.
Methods
Human neutrophils were isolated from healthy donors. ROS production was measured by luminol-amplified chemiluminescence. Degranulation was assessed by measuring myeloperoxidase activity and Western blots. Chemotaxis was assessed by the under-agarose chemotaxis assay. Phosphorylated proteins were assessed by gel electrophoresis and Western blots.
Results
We show that in addition to their ROS scavenging effect, oleuropein and hydroxytyrosol significantly inhibited the bacterial peptide N-formyl-methionyl-leucyl-phenylalanine (fMLF)-induced degranulation of azurophilic and specific granules as measured by myeloperoxidase and lactoferrin release, respectively. We also show that oleuropein and hydroxytyrosol reduced fMLF-induced neutrophil chemotaxis. Interestingly, both agents impaired the fMLF-induced AKT, p38MAPKinase, and ERK1/2 phosphorylation, signaling molecules that are involved in pathways regulating neutrophil functions.
Conclusion
Our data suggest that the anti-inflammatory properties of oleuropein and hydroxytyrosol are not only restricted to their ROS scavenging effect, but also involve the inhibition of two other major pro-inflammatory neutrophil functions.
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- Titel
- Oleuropein and hydroxytyrosol inhibit the N-formyl-methionyl-leucyl-phenylalanine-induced neutrophil degranulation and chemotaxis via AKT, p38, and ERK1/2 MAP-Kinase inhibition
- Verfasst von
-
Samia Bedouhene
Farida Moulti-Mati
Pham My-Chan Dang
Jamel El-Benna
- Publikationsdatum
- 15.07.2017
- Verlag
- Springer International Publishing
- Erschienen in
-
Inflammopharmacology / Ausgabe 6/2017
Print ISSN: 0925-4692
Elektronische ISSN: 1568-5608 - DOI
- https://doi.org/10.1007/s10787-017-0367-7
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