Nicholas L Weilinger, Kai Yang, Hyun B Choi, Christopher J Groten, Stefan Wendt, Madhuvika Murugan, Leigh E Wicki-Stordeur, Louis-Philippe Bernier, Prashanth S Velayudhan, Jiaying Zheng, Jeffrey M LeDue, Ravi L Rungta, John R Tyson, Terrance P Snutch, Long-Jun Wu, Brian A MacVicar
Neuronal swelling during cytotoxic edema is triggered by Na+ and Cl- entry and is Ca2+ independent. However, the causes of neuronal death during swelling are unknown. Here, we investigate the role of large-conductance Pannexin-1 (Panx1) channels in neuronal death during cytotoxic edema. Panx1 channel inhibitors reduce and delay neuronal death in swelling triggered by voltage-gated Na+ entry with veratridine. Neuronal swelling causes downstream production of reactive oxygen species (ROS) that opens Panx1 channels...
September 22, 2023: Cell Reports