In the article titled “Knockdown of Sestrin2 Increases Lipopolysaccharide-Induced Oxidative Stress, Apoptosis, and Fibrotic Reactions in H9c2 Cells and Heart Tissues of Mice via an AMPK-Dependent Mechanism” [1], the western blots in Figures 1(b) and 1(d) are the same. This happened during the production process and the publisher apologizes to the authors and readers for this error. The corrected version of Figure 1 is shown below.