Effects of PCSK9 inhibition on microglial count after cardiac I/R injury. A, Percentage of CD11b+/CD45+ microglia of the brains. B, Percentage of CD11b+/CD45+high microglia of the brains. C, Representative flow cytometry images of microglial count. I/R, ischemia/reperfusion; CD, cluster of differentiation; PCSK9i, proprotein convertase subtilisin/kexin type 9 inhibitor; Control, rat group with no surgical intervention; PCSK9i, rats group with no intervention and treated with PCSK9i for 180 minutes; Sham, rat group with open chest surgery; Vehicle, rats treated with vehicle at 15 minutes before cardiac I/R; Pretreatment, rats treated with PCSK9i at 15 minutes before cardiac I/R; Ischemia, rats treated with PCSK9i at 15 minutes during ischemic period; Reperfusion, rats treated with PCSK9i at the onset of reperfusion period (n=4–10 per group). *P<0.05 vs control, PCSK9i, and sham, †
P<0.05 vs vehicle.