Leptin and leptin receptor expressions in prostate tumors may predict disease aggressiveness?
Acta cir. bras
; Acta cir. bras;29(supl.3): 44-48, 2014. graf
Article
em En
| LILACS
| ID: lil-726249
Biblioteca responsável:
BR1.1
ABSTRACT
PURPOSE:
The aim of this study was to evaluate the expression of leptin and its receptor in histological sections of prostate tumors, and their association with prognostic factors.METHODS:
A total of 532 surgical specimens from prostate cancer were studied. After histopathological diagnosis, the samples were included in tissue microarrays containing cores from tumor and non-tumor (benign prostatic hyperplasia) areas. These were immunostained with anti-leptin and anti-leptin-receptor antibodies. Objective and subjective analyses were performed. Student's-t-test and ANOVA were used to compare mean values, and linear regression was used to evaluate the correlation between histological results and prognostic indicators.RESULTS:
Leptin receptor expression was reduced in tumors with a positive surgical margin, urethral margin involvement, and seminal vesicles invasion. Further, there was a negative correlation between the expression of leptin receptor in tumor areas and the sum of prognostic factors, suggesting that leptin receptor may predict the aggressiveness of disease.CONCLUSION:
Our findings suggest that leptin receptor expression is a potential prognostic factor for PCa. Further investigation is needed to support the use of leptin receptor as a novel biomarker, although leptin itself does not seem to predict the aggressiveness of prostate cancer. .Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Neoplasias da Próstata
/
Adenocarcinoma
/
Leptina
/
Receptores para Leptina
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Aged
/
Aged80
/
Humans
/
Male
Idioma:
En
Revista:
Acta cir. bras
Assunto da revista:
Cirurgia Geral
/
Procedimentos Cir£rgicos Operat¢rios
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil