[en] We separately studied the antioxidant properties of propofol (PPF), Diprivan (the commercial form of PPF) and intralipid (IL) (the vehicle solution of PPF in Diprivan) on active oxygen species produced by phorbol myristate acetate (10(-6) M)-stimulated human polymorphonuclear leukocytes (PMN: 5 x 10(5) cells/assay), human endothelial cells (5 x 10(5) cells/assay) or cell-free systems (NaOCl or H2O2/peroxidase systems), using luminol (10(-4) M)-enhanced chemiluminescence (CL). We also studied the protective effects of Diprivan on endothelial cells submitted to an oxidant stress induced by H2O2/MPO system: cytotoxicity was assessed by the release of preincorporated 51Cr. Propofol inhibited the CL produced by stimulated PMN in a dose dependent manner (until 5 x 10(-5) M, a clinically relevant concentration), while Diprivan and IL were not dose-dependent inhibitors. The CL produced by endothelial cells was dose-dependently inhibited by Diprivan and PPF, and weakly by IL (not dose-dependent). In cell free systems, dose-dependent inhibitions were obtained for the three products with a lower effect for IL. Diprivan efficaciously protected endothelial cells submitted to an oxidant stress, while IL was ineffective. By HPLC, we demonstrated that PPF was not incorporated into the cells. The drug thus acted by scavenging the active oxygen species released in the extracellular medium. IL acted in the same manner, but was a less powerful antioxidant.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Mathy, Marianne ; Université de Liège - ULiège > Département des sciences de la motricité > Unité de recherche sur l'os et le cartillage (U.R.O.C.)
Deby, Ginette ; Université de Liège - ULiège > Centre de l'oxygène : Recherche et développement (C.O.R.D.)
Hans, Pol ; Centre Hospitalier Universitaire de Liège - CHU > Anesthésie et réanimation
Deby, Carol
Lamy, Maurice ; Centre Hospitalier Universitaire de Liège - CHU > Anesthésie et réanimation
Language :
English
Title :
Protective activity of propofol, Diprivan and intralipid against active oxygen species.
Publication date :
1998
Journal title :
Mediators of Inflammation
ISSN :
0962-9351
eISSN :
1466-1861
Publisher :
Hindawi Publishing Corporation, Sylvania, United States - Ohio
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