Reference : In vitro evaluation of glutathione peroxidase (GPx)-like activity and antioxidant proper...
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
http://hdl.handle.net/2268/62722
In vitro evaluation of glutathione peroxidase (GPx)-like activity and antioxidant properties of some Ebselen analogues
English
Mouithys-Mickalad, Ange mailto [Université de Liège - ULg > > Centre de l'oxygène : Recherche et développement (C.O.R.D.) >]
Mareque-Faez, Juan [> > > >]
Chistiaens, U. [> > > >]
Kohnen, Stephan mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux >]
Deby, Christiane mailto [Centre Hospitalier Universitaire de Liège - CHU > > Administration des patients - Admission des hospitalisés >]
Hoebeke, Maryse mailto [Université de Liège - ULg > Département de physique > Spectroscopie biomédicale >]
Lamy, Maurice mailto [Université de Liège - ULg > Département des sciences cliniques > Anesthésie et réanimation]
Deby-Dupont, G. [> > > >]
2004
Redox Report : Communications in Free Radical Research
Maney Publishing
9
2
81-87
Yes (verified by ORBi)
International
1351-0002
Leeds
[en] glutathione peroxidase ; diselenide and selenide derivatives ; Ebselen ; electron paramagnetic resonance ; lipid peroxidation
[en] Four analogues of Ebselen were synthesized and their glutathione peroxidase activity and antioxidant property evaluated and compared to Ebselen. Among the studied compounds, only diselenide [3] exhibited both glutathione peroxidase activity and radical-scavenging capability. Compounds [3] and [4] showed a strong inhibitory effect (53% and 43%, respectively) on the lipid peroxidation of linoleic acid compared to Ebselen and selenide derivatives ([1] and [2]) which were less active (28%, 26% and 18% inhibition, respectively). A concentration-dependent inhibitory effect was also found in the model of the formation of ABTS*+ radical cation: 65% and 89% inhibition for compound [3] at 10(-4) M and 5 x 10(-5) M, respectively, and 68% and 90% for compound [4], compared to 14% and 52% inhibition for Ebselen and the diselenides [1] and [2] (29%, 46% and 45%, 68%, respectively). By EPR spin trapping technique, the following inhibitory profile of the Ebselen analogues was observed towards the formation of thiyl radicals: Ebselen = [3]>[1]>[2]>[4]. Studies with compound [3] are in progress on oxidative stress cell models.
Researchers ; Professionals
http://hdl.handle.net/2268/62722

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