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TRAIL and osteoprotegerin (OPG) expression in bladder urothelial carcinoma: correlation with clinicopathological parameters and prognosis.
MedLine Citation:
PMID:  23277172     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
AIMS: : To investigate the expression of tumour necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) and osteoprotegerin (OPG) in bladder urothelial carcinomas (UCs) and assess possible interrelations with other regulators of TRAIL induced apoptosis (p65/NF-κB, p-ERK1/2, p-AKT) and FGFR3, as well as to elucidate their potential involvement in bladder tumourigenesis and determine their potential prognostic utility.
METHODS: : Paraffin embedded transurethral resection tissue from 128 patients with UC was immunostained for TRAIL and OPG as well as for p65/NF-κB, p-ERK1/2, p-AKT and FGFR3.
RESULTS: : TRAIL and OPG were coexpressed in 96.6% of cases and positively interrelated. OPG expression was significantly different among histological grades, being higher in low-grade UCs and was inversely correlated with the presence of lymphovascular invasion (LVI). TRAIL also displayed an inverse relationship with histological grade, T-category and LVI. Both OPG and TRAIL expression were positively correlated with FGFR3 expression, the former relationship being marginal. Moreover, increased TRAIL expression was marginally correlated with lower NF-κB/p65 nuclear expression. Increased OPG expression adversely affected survival both in univariate and multivariate analysis.
CONCLUSIONS: : OPG and TRAIL are frequently expressed and coexpressed in UCs, supporting the involvement of OPG in the resistance to TRAIL-driven apoptosis. Inhibition of NF-κB activation may also play a similar role, although less important. OPG emerged as an independent prognostic marker of adverse significance.
Authors:
Georgia Levidou; Irene Thymara; Angelica A Saetta; Polyanthi Papanastasiou; Petros Pavlopoulos; Stratigoula Sakellariou; Paraskevi Fragkou; Efstratios Patsouris; Penelope Korkolopoulou
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pathology     Volume:  45     ISSN:  1465-3931     ISO Abbreviation:  Pathology     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0175411     Medline TA:  Pathology     Country:  England    
Other Details:
Languages:  eng     Pagination:  138-44     Citation Subset:  IM    
Affiliation:
First Department of Pathology, Laiko General Hospital, Athens, University School of Medicine, Athens, Greece.
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