Honokiol Protects against Anti-β1-Adrenergic Receptor Autoantibody-Induced Myocardial Dysfunction via Activation of Autophagy

Figure 5

Honokiol attenuated the degeneration of cardiac tissue. (a), (b), (c), and (d) represented the HE staining images of cardiac tissue sections from the control, β1-AAB, β1-AAB + HNK, and β1-AAB + vehicle groups, respectively. (b) There was extensive myocardial degeneration in the β1-AAB group. (c) A significant improvement of myocardial pathological features was observed in the β1-AAB + HNK group. (d) There was no obvious amelioration of the pathological impairments in the β1-AAB + vehicle group.

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