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Parkin protein expression and its impact on survival of patients with advanced colorectal cancer

Cancer Biology & Medicine 2018年第1期15卷 61-69页

作者： Claudia Caroline Veloso da Silva-Camargo Rosimeri Kuhl Svoboda Baldin nayanne louise costacurta polli Amanda Pereira Agostinho Marcia Olandosk Lúcia de Noronha Vanessa Santos Sotomaior Group for Advanced Molecular Investigation (NIMA) School of Health and Biosciences Pontiicia Universidade Catolica do Parana (PUCPR) Curitiba 80215-901 Brazil Hospital de Clinicas da Universidade Federal do Parana (HC-UFPR) Curitiba 80215-901 Brazil

Objective:Features of colorectal cancer such as natural history,molecular,chromosomal,and epigenetic alterations have been well ***,there is still a lack of accurate prognostic markers,which is evident by the lower overall survival rates of patients with advanced *** alterations in parkin protein expression have been described in colorectal cancer,the functional significance of this protein remains *** present study aimed to investigate the involvement of parkin expression in colorectal adenocarcinoma development and progression by evaluating the association between its expression,clinicopathological parameters,and expression of known proteins involved in colorectal ***:Tissue microarrays consisting of 73 tumor and 64 normal tissue samples were generated to examine parkin expression and localization by ***:A positive correlation of parkin and APC expression was observed in the superficial,intermediate,and profound regions of all cases(ρ=0.37;P=0.001).Parkin expression was also significantly associated with tumors in men(P=0.049),those of the mucinous subtype(P=0.028),and of advanced stage(III+IV,P=0.041).In addition,increased parkin expression was observed in the invasive front tumor region(P=0.013).More importantly,a positive correlation was found between parkin expression and the overall survival of patients with advanced colorectal cancer(P=0.019).Multivariate analysis showed that parkin expression was independent of any of the clinicopathological parameters evaluated in relation to patient ***:These results suggest that parkin expression status can be used as a potential independent prognostic marker of survival in advanced colorectal cancer.

关键词：蛋白质癌症

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