• Myocardial NADPH oxidase-4 regulates the physiological response to acute exercise 

      Hancock, Matthew; Hafstad, Anne Dragøy; Nabeebaccus, Adam A.; Catibog, Norman; Logan, Angela; Smyrnias, Ioannis; Hansen, Synne Simonsen; Lanner, Johanna; Schröder, Katrin; Murphy, Michael P.; Shah, Ajay M.; Zhang, Min (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-27)
      Regular exercise has widespread health benefits. Fundamental to these beneficial effects is the ability of the heart to intermittently and substantially increase its performance without incurring damage, but the underlying homeostatic mechanisms are unclear. We identify the ROSgenerating NADPH oxidase-4 (Nox4) as an essential regulator of exercise performance in mice. Myocardial Nox4 levels ...
    • Targeted redox inhibition of protein phosphatase 1 by Nox4 regulates eIF2a-mediated stress signaling 

      Santos, Celio X.C.; Hafstad, Anne Dragøy; Beretta, Matteo; Zhang, Min; Molenaar, Chris; Kopec, Jola; Fotinou, Dina; Murray, Thomas V.; Cobb, Andrew M.; Martin, Daniel; Zeh Silva, Maira; Anilkumar, Narayana; Schröder, Katrin; Shanahan, Catherine M.; Brewer, Alison C.; Brandes, Ralf P.; Blanc, Eric; Parsons, Maddy; Belousov, Vsevelod; Cammack, Richard; Hider, Robert C.; Steiner, Roberto A.; Shah, Ajay M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01-07)
      Phosphorylation of translation initiation factor 2α (eIF2α) attenuates global protein synthesis but enhances translation of activating transcription factor 4 (ATF4) and is a crucial evolutionarily conserved adaptive pathway during cellular stresses. The serine–threonine protein phosphatase 1 (PP1) deactivates this pathway whereas prolonging eIF2α phosphorylation enhances cell survival. Here, we show ...