The protein expression (A) and quantification (B) of markers for differentiation (ACTA2, CNN1, TAGLN) and dedifferentiation (PCNA, OPN, PDGFRβ (HC: n=8, NCAA: n=8, CAA: n=15)) in VSMCs after incubation with platelets from HC (n=10), KD patients with CAA (n=20) and NCAA (n=20) were determined by Western blot (One-way ANOVA or Kruskall-Wallis test). VSMCs were pre-treated with agomiR-223 or antagomiR-223, followed by incubation with platelets from HC (n=9), KD patients with NCAA (n=16) or CAA (n=9). The protein expression (C) and quantification (D) of markers for differentiation (ACTA2, CNN1, TAGLN) and dedifferentiation (PCNA, OPN, PDGFRβ (HC: n=8, NCAA: n=9, CAA: n=9)) were measured by Western blot (Unpaired t test or Mann Whitney test). Abbreviations: HC, VSMCs co-cultured with platelets from HC; KD (NCAA), VSMCs co-cultured with platelets from KD patients with NCAA; KD (CAA), VSMCs co-cultured with platelets from KD patients with CAA. *P<0.05, **P<0.01, ***P<0.001, ****P<0.0001.