Abstract
This immunohistochemical study was carried out to evaluate the role of vascular endothelial growth factor (VEGF), matrix metalloproteinase-2 and -9 (MMP-2 and MMP-9), their inhibitor (tissue inhibitor of metalloproteinase-1, TIMP-1), and microvessel density (MVD) in the clinicopathologic behavior of childhood Hodgkin's lymphoma (HL). Paraffin-embedded histologic sections from 15 children with HL were immunohistochemically stained with MMP-2, MMP-9, TIMP-1, VEGF, and CD31 antibodies to investigate the correlation between the expression of these markers and the clinicopathologic characteristics of HL. Expression of MMP-2 and VEGF in Hodgkin and Reed-Sternberg cells (HRS) was more frequent in nodular sclerosis than in other subtypes (p=0.07 and 0.08, respectively). None of the study parameters in HRS cell were associated with age, sex, disease stage, extranodal disease, and the occurrence of bulky tumor. There was a trend toward advanced stage in negative TIMP-1 staining in HRS cells (p=0.06). In reactive lymphocytes, MMP-2 expression was correlated with MVD (r=0.68, p=0.005), and MMP-9 expression was correlated with B symptoms (p=0.003). Also, low TIMP-1 expression in reactive lymphocytes was frequently found in patients with adv...Continue Reading
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