Article (Scientific journals)
Inhibitory effect of curcuminoids and tetrahydrocurcuminoids on equine activated neutrophils and myeloperoxidase activity
Franck, Thierry; Kohnen, Stephan; Grulke, Sigrid et al.
2008In Physiological Research, 57 (4), p. 577-587
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Keywords :
curcuminoids; stimulated equine neutrophils; myeloperoxidase activity
Abstract :
[en] In the horse, the inflammation response to various pathologies (intestinal strangulations, laminitis, etc.) involves an excessive stimulation of the polymorphonuclear neutrophils releasing reactive oxygen species (ROS) and myeloperoxidase (MPO). The aim of the present work was to study the effect of natural polyphenols, curcuminoids and tetrahydrocurcuminoids (THC) on isolated stimulated equine neutrophils and on the activity of purified MPO. The ROS production and the release of MPO by activated neutrophils were measured by chemiluminescence and ELISA techniques, respectively. The activity of purified MPO was measured by studying its nitration, chlorination or oxidation capacity and by using an original method called SIEFED allowing the study of drug interaction with the enzyme without interferences of the medium. Curcuminoids and THC had dose-dependent inhibitory effects on ROS production and MPO release by activated neutrophils and on purified MPO activity. We suggest that the higher efficacy of curcuminoids versus THC could be explained, at least partially, by its chemical structure: the conjugated double bounds and the plane structure of curcuminoids made easier the neutralization of the radical species generated by activated neutrophils and the interaction of the drug with the active site of MPO. These inhibitory effects of curcuminoids on the oxidant activity of equine neutrophils and on MPO activity open therapeutic perspectives in equine pathologies with excessive inflammatory reactions.
Research center :
CORD - Centre de l'Oxygène, Recherche et Développement - ULiège
Disciplines :
Pharmacy, pharmacology & toxicology
Veterinary medicine & animal health
Biotechnology
Author, co-author :
Franck, Thierry  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux
Kohnen, Stephan ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux
Grulke, Sigrid  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Département clinique des animaux de compagnie et des équidés
Neven, Philippe
Goutman, Yvette
Péters, Fabrice
Pirotte, Bernard ;  Université de Liège - ULiège > Chimie pharmaceutique
Deby, Ginette ;  Université de Liège - ULiège > Centre de l'oxygène : Recherche et développement (C.O.R.D.)
Serteyn, Didier  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux
Language :
English
Title :
Inhibitory effect of curcuminoids and tetrahydrocurcuminoids on equine activated neutrophils and myeloperoxidase activity
Publication date :
2008
Journal title :
Physiological Research
ISSN :
0862-8408
eISSN :
1802-9973
Publisher :
Akademie Ved Ceske Republiky, Czechia
Volume :
57
Issue :
4
Pages :
577-587
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
MPOEQUI
Funders :
DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie [BE]
Available on ORBi :
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