Propofol inhibits H₂O₂-induced H9c2 cell death.

<p><b>A</b>: Effect of H₂O₂ on cell viability. Cytotoxicity was measured using an LDH assay. n = 3. <b>B</b>: Effect of propofol (PR) on cell viability. Scale bar, 200 μm. <b>C</b>: Quantitative analysis of PR-induced cytotoxicity in H9c2 cells. n = 3. <b>D</b>: Diagram of the scheme of propofol (PR) and H₂O₂ treatment. <b>E</b>: Effect of PR on cell viability under oxidative stress conditions. Arrows, dead cells; arrowheads, surviving cells. Scale bar, 250 μm. <b>F</b>: Quantification of dead H9c2 cells. n = 3. The data are expressed as mean ± SEM. <b>G</b>: TUNEL staining. Arrowheads, TUNEL-positive cells. Scale bar, 200 μm. <b>H</b>: Quantification of TUNEL-positive cells. n = 3. The data are expressed as mean ± SEM. Control (con) means no treatment. *<i>P</i> < 0.05, **<i>P</i> < 0.01.