Abstract：
:Clusterin has been reported to play a significant role in tumorigenesis, and its overexpression occurs in various human malignancies. We examine the clusterin overexpression in human hepatocellular carcinoma (HCC) and verify its clinical usefulness as a candidate biomarker by clinicopathologic and survival analysis. We examined clusterin overexpression immunohistochemically in 100 surgically resected HCCs using the tissue microarray method. A total of 89 HCCs exhibited clusterin overexpression, in 2 distinct staining patterns, cytoplasmic (n=35) and canalicular (n=54). Clusterin positivity demonstrated an inverse correlation with tumor cell apoptosis evaluated by the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling assay (P=0.024). Within the clusterin-positive group, cytoplasmic overexpression had a positive correlation with tumor cell proliferative activity measured by the Ki-67 labeling index (P=0.003). HCCs demonstrating cytoplasmic clusterin overexpression were associated with poor Edmondson's histological grade and high TNM stage (P <0.05). In the survival analysis, the cytoplasmic-positive group demonstrated an overall poorer prognosis than the canalicular-positive group, according to univariate and multivariate analysis (P <0.05). In HCC, clusterin may play an important role in tumorigenesis and progression, corresponding to its subcellular localization. Cytoplasmic clusterin overexpression could be a potential new prognostic marker for the aggressiveness of HCC.
journal_name
Hum Patholjournal_title
Human pathologyauthors
Kang YK,Hong SW,Lee H,Kim WHdoi
10.1016/j.humpath.2004.07.021subject
Has Abstractpub_date
2004-11-01 00:00:00pages
1340-6issue
11eissn
0046-8177issn
1532-8392pii
S0046817704004381journal_volume
35pub_type
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