Furthermore, in the PM and DM groups, the expression levels of Cyr61, CTGF, and VEGF in serum at 6 months after treatment were lower than those before treatment (P < .05).Cyr61, CTGF, and VEGF are involved in the pathogenesis of PM/DM.
The AS and the number of VEGF-expressing cells in the fascia of patients with DM were significantly greater than those of patients with PM; no significant difference was observed in muscle in patients with DM and PM.