Loss of TIMP-1 immune expression and tumor recurrence in localized prostate cancer
Int. braz. j. urol
; 41(6): 1088-1095, Nov.-Dec. 2015. tab, graf
Article
em En
| LILACS
| ID: lil-769768
Biblioteca responsável:
BR1.1
ABSTRACT
Introduction and objective:
Overexpression of MMPs has been related to biochemical recurrence after radical prostatectomy. TIMP1 and TIMP2 are controllers of MMPs and the aim of this study is to evaluate the expression levels of MMPs and their regulators using immunohistochemistry in tissue microarray of localized prostate cancer (PC). Materials andMethods:
Immune-expression of MMP-9, MMP-2, TIMP1, TIMP-2, MMP-14 and IL8, were analyzed by immunohistochemistry in radical prostatectomy specimens of 40 patients with localized PC who underwent surgery between September 1997 and February 2000. Protein expression was considered as categorical variables, negative or positive. The results of the immune-expression were correlated to Gleason score (GS), pathological stage (TNM), pre-operatory PSA serum levels and biochemical recurrence in a mean follow up period of 92.5 months.Results:
The loss of TIMP1 immune-expression was related to biochemical recurrence. When TIMP1 was negative, 56.3% patients recurred versus 22.2% of those whose TIMP1 was positive (p=0.042). MMP-9, MMP-2, IL8 and MMP-14 were positive in the majority of PC. TIMP-2 was negative in all cases.Conclusion:
Negative immune-expression of TIMP1 is correlated with biochemical recurrence in patients with PC possibly by failing to control MMP-9, an important MMP related to cancer progression.Palavras-chave
Texto completo:
1
Índice:
LILACS
Assunto principal:
Neoplasias da Próstata
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Inibidor Tecidual de Metaloproteinase-1
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Metaloproteinases da Matriz
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Recidiva Local de Neoplasia
Tipo de estudo:
Prognostic_studies
Limite:
Adult
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Aged
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Humans
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Male
Idioma:
En
Revista:
Int. braz. j. urol
Assunto da revista:
UROLOGIA
Ano de publicação:
2015
Tipo de documento:
Article
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Project document