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2015 ; 8
(7
): 8165-77
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gab.com Text
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English Wikipedia
Combined use of COX-1 and VEGF immunohistochemistry refines the histopathologic
prognosis of renal cell carcinoma
#MMPMID26339385
Osman WM
; Youssef NS
Int J Clin Exp Pathol
2015[]; 8
(7
): 8165-77
PMID26339385
show ga
The course of RCC is asymptomatic, resulting in 25-30% of patients presenting
with metastatic disease at time of diagnosis. The development of novel agents
targeting angiogenesis and signal transduction pathways has improved patient
outcomes. Role of cyclooxygenase in cancer development has been the subject of
close scrutiny. COX-1 has been recognized to be involved in regulation of
angiogenesis. To date, no immunohistochemical studies have been performed to
assess the possible association between COX-1 and VEGF in RCC. This study is
designed to evaluate the relationship between these two proteins in RCC. Also,
the relationship between their combined immunohistochemical expression and
different clinicopathological prognostic parameters in RCC is investigated.
Immunohistochemical expression of COX-1 and VEGF was evaluated retrospectively on
64 cases of primary RCC including: 45 clear cell carcinoma, 12 papillary
carcinoma and 7 of chromophope carcinoma. High COX-1 expression was detected in
62.5% of RCCs with a significant association with tumor grade (P=0.028), and
highly significant relationship with tumor size and stage (P=0.001). There was a
highly significant relationship between the VEGF score and tumor size (P=0.001),
and stage (P=0.006). There was a positive correlation between COX-1 and VEGF
expression score (P=0.001). Combined expression of both markers predicts high
stage tumors (stage III/IV). Immunohistochemical expression of COX-1 and VEGF is
associated with poor prognostic parameters in RCC. Their combined expression has
a beneficial role in prediction of high stage tumors (III/IV).