ABSTRACT
Objecfive To investigate the role of serum Insulin-like growth factor(IGF)-1,insulinlike growth factor-binding potein(IGFBP)-3 in children with Henoch-Schonlein purpura(HSP).Methods The serum concentration of IGF-1,1GFBP-3 was measured by enzyme-linked immunosorbent assay(ELISA)method in 45 acute SHP patients,40 recoverv patients and 30 healthy controls.Results The serum levels of IGF-1 [(452±183)μg/L],IGFBP-3 [(13 897±3124)μg/L] and C-reactive protein(CRP)[(20±8)mg/L]in acute phase were significantly higher than those in healthy controls(P0.05).The serum levels of IGF-1[(621±253)μg/L] and IGFBP-3[(18 763±3173)μg/L] were higher in the renal damage group than in the non-renal damage group(P0.05).whereas the serum level of CRP was not significantly different(P>0.05).The serum levels of IGF-1,IGFBP-3 showed positive correlation with the level of CRP(r=0.624,0.672,P<0.01).Conclusion The IGF-1 and IGFBP-3 may play an important role in the pathological mechanism of HSP.The level of IGF-1 may be used as an indicator for HSP disease activity and progression.IGF-1 mav have a close relation with the damageof renaJ system in HSP.