NPPA and cardiac hypertrophy: In addition, the hallmarks of cardiac hypertrophy, atrial natriuretic peptide (ANP), B‐type natriuretic peptide (BNP), and β‐myosin heavy chain (β‐MHC) mRNA expression were also in line with that of histological analyses: Honokiol pretreatment markedly reversed the upregulation of ANP, BNP, and β‐MHC levels, as indicated in Figure 6C.