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Title

Antioxidant responses and cellular adjustments to oxidative stress

AuthorsEspinosa-Díez, Cristina ; Miguela, Verónica; Mennerich, Daniela; Kietzmann, Thomas; Sánchez-Pérez, Patricia; Cadenas, Susana; Lamas Peláez, Santiago
KeywordsAntioxidants
ER stress
Ischemia–reperfusion
Transcription factors
Redox signaling
Issue Date21-Jul-2015
CitationRedox Biology 6: 183- 197 (2015)
Abstract© 2015 . Redox biological reactions are now accepted to bear the Janus faceted feature of promoting both physiological signaling responses and pathophysiological cues. Endogenous antioxidant molecules participate in both scenarios. This review focuses on the role of crucial cellular nucleophiles, such as glutathione, and their capacity to interact with oxidants and to establish networks with other critical enzymes such as peroxiredoxins. We discuss the importance of the Nrf2-Keap1 pathway as an example of a transcriptional antioxidant response and we summarize transcriptional routes related to redox activation. As examples of pathophysiological cellular and tissular settings where antioxidant responses are major players we highlight endoplasmic reticulum stress and ischemia reperfusion. Topologically confined redox-mediated post-translational modifications of thiols are considered important molecular mechanisms mediating many antioxidant responses, whereas redox-sensitive microRNAs have emerged as key players in the posttranscriptional regulation of redox-mediated gene expression. Understanding such mechanisms may provide the basis for antioxidant-based therapeutic interventions in redox-related diseases.
URIhttp://hdl.handle.net/10261/164085
Identifiersdoi: 10.1016/j.redox.2015.07.008
issn: 2213-2317
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