Figure 7. Mice lacking MsrA have increased CaMKII oxidation, apoptosis, reduced survival and impaired heart function after myocardial infarction.
(A) Immunostaining and (B) stain intensity quantification of oxidized CaMKII in heart sections from WT, p47−/−, and MsrA−/− mice post-MI (n = 3 hearts/group, * p < 0.05 vs. WT). (C) Summary data for TUNEL staining of heart sections from WT, p47−/−, and MsrA−/− mice post-MI (n = 3 hearts/group, * p < 0.05 vs. WT). (D) Mortality is significantly increased post-MI in MsrA−/− mice compared to WT controls. Numbers in bars represent post-MI deaths/total number of mice receiving MI. Post-MI left ventricular dilation (E) and function (F) were compromised in surviving MsrA−/− mice compared to WT controls three weeks after surgery (n = 17 hearts/group for WT, n = 9 hearts/group for MsrA−/−).