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  1. Gomaa W, Al-Ahwal M, Al-Maghrabi H, Buhmeida A, Al-Qahtani M, Al-Maghrabi B, et al.
    Malays J Pathol, 2017 Dec;39(3):243-250.
    PMID: 29279586
    BACKGROUND/AIM: Colorectal carcinoma (CRC) carries a high incidence of morbidity and mortality. Prognosis is related to nodal metastasis and stage. Clusterin is a widely distributed glycoprotein with not yet fully understood functions. Clusterin may be overexpressed in some tumours or under expressed in other tumours. The aim behind this study is to examine the relation of clusterin cytoplasmic immunostaining to tumour characteristics, disease relapse, and survival in CRC.

    MATERIALS AND METHODS: Paraffin blocks of 133 CRCs were retrieved from the Department of Pathology, King Abdulaziz University, Jeddah, Saudi Arabia. Immunostaining was done using antibody to clusterin. Staining expression in 10% of malignant cells was used as a cut-off to determine low immunostaining and high immunostaining. Statistical tests were used to evaluate the association of clusterin immunostaining with clinicopathological parameters.

    RESULTS: Immunohistochemical results showed clusterin low immunostaining in CRC and nodal metastases. No association was found between clusterin immunostaining and tumour grade, age, tumour invasiveness, distant metastases, vascular invasion, nodal metastases, relapse, and survival.

    CONCLUSION: Our study showed low clusterin immunostaining in CRC with lack of association with prognostic indicators in CRC. These results raise the controversy of understanding the role of clusterin in CRC. Further molecular studies are required to explore more about possible mechanisms of clusterin association with tumorigenicity, apoptosis, tumour growth progression, local and vascular invasion, and metastasis of CRC.

    Matched MeSH terms: Clusterin/biosynthesis*
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