Fiuza 2014 Free Radic Res: Difference between revisions
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|title=Fiuza B, SubelzΓΊ N, Calcerrada P, Straliotto MR, Piacenza L, Cassina A, Rocha JB, Radi R, de Bem AF, Peluffo G (2014) Impact of SIN-1-derived peroxynitrite flux on endothelial cell redox homeostasis and bioenergetics: protective role of diphenyl diselenide via induction of peroxiredoxins. Free Radic Res 49:122-32. | |title=Fiuza B, SubelzΓΊ N, Calcerrada P, Straliotto MR, Piacenza L, Cassina A, Rocha JB, Radi R, de Bem AF, Peluffo G (2014) Impact of SIN-1-derived peroxynitrite flux on endothelial cell redox homeostasis and bioenergetics: protective role of diphenyl diselenide via induction of peroxiredoxins. Free Radic Res 49:122-32. | ||
|info=[http://www.ncbi.nlm.nih.gov/pubmed/25373783 PMID:25373783] | |info=[http://www.ncbi.nlm.nih.gov/pubmed/25373783 PMID:25373783] | ||
|authors=Fiuza B, Subelzu N, Calcerrada P, Straliotto MR, Piacenza L, Cassina AM, Rocha JB, Radi R, | |authors=Fiuza B, Subelzu N, Calcerrada P, Straliotto MR, Piacenza L, Cassina AM, Rocha JB, Radi R, De Bem Andreza Fabro, Peluffo G | ||
|year=2014 | |year=2014 | ||
|journal=Free Radic Res | |journal=Free Radic Res | ||
|abstract=Increased production of reactive nitrogen (RNS) and oxygen (ROS) species and its detrimental effect to mitochondria are associated with endothelial dysfunction. This study was designed to determine the effect of a peroxynitrite flux, promoted by 1,3-morpholinosydnonimine (SIN-1), in mitochondrial function and some redox homeostasis parameters in bovine aortic endothelial cells (BAEC). Moreover, the effect of diphenyl diselenide (PhSe)<sub>2</sub>, a simple organic selenium compound, in preventing peroxynitrite-mediated cytotoxicity was also investigated. Our results showed that overnight exposure to SIN-1 (250 ΞΌM) caused a profound impairment of oxygen consumption, energy generation and reserve capacity in mitochondria of BAEC. Mitochondrial dysfunction resulted in an additional intracellular production of peroxynitrite, amplifying the phenomenon and leading to changes in redox homeostasis. Moreover, we observed an extensive decline in mitochondrial membrane potential (ΞΞ¨<sub>m</sub>) induced by peroxynitrite and this event was associated with apoptotic-type cell death. Alternatively, the pretreatment of BAEC with (PhSe)<sub>2</sub>, hindered peroxynitrite-mediated cell damage by preserving mitochondrial and endothelial function and consequently preventing apoptosis. The protective effect of (PhSe)<sub>2</sub> was related to its ability to improve the intracellular redox state by increasing the expression of different isoforms of peroxiredoxins (Prx-1-3), efficient enzymes in peroxynitrite detoxification. | |abstract=Increased production of reactive nitrogen (RNS) and oxygen (ROS) species and its detrimental effect to mitochondria are associated with endothelial dysfunction. This study was designed to determine the effect of a peroxynitrite flux, promoted by 1,3-morpholinosydnonimine (SIN-1), in mitochondrial function and some redox homeostasis parameters in bovine aortic endothelial cells (BAEC). Moreover, the effect of diphenyl diselenide (PhSe)<sub>2</sub>, a simple organic selenium compound, in preventing peroxynitrite-mediated cytotoxicity was also investigated. Our results showed that overnight exposure to SIN-1 (250 ΞΌM) caused a profound impairment of oxygen consumption, energy generation and reserve capacity in mitochondria of BAEC. Mitochondrial dysfunction resulted in an additional intracellular production of peroxynitrite, amplifying the phenomenon and leading to changes in redox homeostasis. Moreover, we observed an extensive decline in mitochondrial membrane potential (ΞΞ¨<sub>m</sub>) induced by peroxynitrite and this event was associated with apoptotic-type cell death. Alternatively, the pretreatment of BAEC with (PhSe)<sub>2</sub>, hindered peroxynitrite-mediated cell damage by preserving mitochondrial and endothelial function and consequently preventing apoptosis. The protective effect of (PhSe)<sub>2</sub> was related to its ability to improve the intracellular redox state by increasing the expression of different isoforms of peroxiredoxins (Prx-1-3), efficient enzymes in peroxynitrite detoxification. | ||
|keywords=SIN-1, Apoptosis, Diphenyl diselenide, Endothelial cells; Mitochondria, Mitochondrial dysfunction, Nitric oxide homeostasis, Nitroxidative stress, Peroxiredoxin, Peroxynitrite | |keywords=SIN-1, Apoptosis, Diphenyl diselenide, Endothelial cells; Mitochondria, Mitochondrial dysfunction, Nitric oxide homeostasis, Nitroxidative stress, Peroxiredoxin, Peroxynitrite | ||
|mipnetlab=UY Montevideo Radi R | |mipnetlab=UY Montevideo Radi R, BR Florianopolis De Bem AF | ||
}} | }} | ||
{{Labeling | {{Labeling |
Latest revision as of 09:02, 5 May 2020
Fiuza B, SubelzΓΊ N, Calcerrada P, Straliotto MR, Piacenza L, Cassina A, Rocha JB, Radi R, de Bem AF, Peluffo G (2014) Impact of SIN-1-derived peroxynitrite flux on endothelial cell redox homeostasis and bioenergetics: protective role of diphenyl diselenide via induction of peroxiredoxins. Free Radic Res 49:122-32. |
Fiuza B, Subelzu N, Calcerrada P, Straliotto MR, Piacenza L, Cassina AM, Rocha JB, Radi R, De Bem Andreza Fabro, Peluffo G (2014) Free Radic Res
Abstract: Increased production of reactive nitrogen (RNS) and oxygen (ROS) species and its detrimental effect to mitochondria are associated with endothelial dysfunction. This study was designed to determine the effect of a peroxynitrite flux, promoted by 1,3-morpholinosydnonimine (SIN-1), in mitochondrial function and some redox homeostasis parameters in bovine aortic endothelial cells (BAEC). Moreover, the effect of diphenyl diselenide (PhSe)2, a simple organic selenium compound, in preventing peroxynitrite-mediated cytotoxicity was also investigated. Our results showed that overnight exposure to SIN-1 (250 ΞΌM) caused a profound impairment of oxygen consumption, energy generation and reserve capacity in mitochondria of BAEC. Mitochondrial dysfunction resulted in an additional intracellular production of peroxynitrite, amplifying the phenomenon and leading to changes in redox homeostasis. Moreover, we observed an extensive decline in mitochondrial membrane potential (ΞΞ¨m) induced by peroxynitrite and this event was associated with apoptotic-type cell death. Alternatively, the pretreatment of BAEC with (PhSe)2, hindered peroxynitrite-mediated cell damage by preserving mitochondrial and endothelial function and consequently preventing apoptosis. The protective effect of (PhSe)2 was related to its ability to improve the intracellular redox state by increasing the expression of different isoforms of peroxiredoxins (Prx-1-3), efficient enzymes in peroxynitrite detoxification. β’ Keywords: SIN-1, Apoptosis, Diphenyl diselenide, Endothelial cells; Mitochondria, Mitochondrial dysfunction, Nitric oxide homeostasis, Nitroxidative stress, Peroxiredoxin, Peroxynitrite
β’ O2k-Network Lab: UY Montevideo Radi R, BR Florianopolis De Bem AF
Labels: MiParea: Respiration
Stress:Oxidative stress;RONS Organism: Bovines Tissue;cell: Endothelial;epithelial;mesothelial cell Preparation: Intact cells
Coupling state: LEAK, ROUTINE, ET
HRR: Oxygraph-2k