eISSN: 2084-9869
ISSN: 1233-9687
Polish Journal of Pathology
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1/2013
vol. 64
 
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abstract:

Clinicopathological significance of DNA fragmentation factor 45 and thyroid transcription factor 1 expression in benign and malignant lesions of the gallbladder

Yuan Yuan
,
Zhu-Lin Yang
,
Qiong Zou
,
Li-Fen Cao
,
Xing-Guo Tan
,
Song Jiang
,
Xiong-Ying Miao

Pol J Pathol 2013; 1: 44-51
DOI: https://doi.org/10.5114/pjp.2013.34603
Online publish date: 2013/04/25
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Gallbladder cancer (GBC) is one of the most aggressive tumors; we examined the expression level of DNA fragmentation factor 45 (DFF45) and thyroid transcription factor 1 (TTF-1) in benign and malignant lesions of the gallbladder by immunohistochemistry. The results were correlated with clinicopathological features and prognosis. DNA fragmentation factor 45 and TTF-1 expression was significantly higher in gallbladder adenocarcinomas than in the corresponding peritumoral tissues (χ2DFF45 = 6.92, χ2TTF-1 = 8.68, ps < 0.01), polyps (χ2DFF45 = 4.49, χ2TTF-1 = 5.35, ps < 0.05), and chronic cholecystitis (χ2DFF45 = 12.98, χ2TTF-1 = 17.74, ps < 0.01). Negative expression of DFF45 and TTF-1 was significantly associated with tumor differentiation, tumor mass, lymph node metastasis and invasion of adenocarcinomas (p < 0.05). Univariate Kaplan-Meier analysis showed that elevated expression levels of DFF45 and TTF-1 (p < 0.05) were closely associated with increased overall survival. In addition, the average survival time of patients with DFF45(+) TTF-1(+) tumors was significantly higher than those with DFF45(–) TTF-1(–) tumors (p < 0.05). Finally, multivariate Cox regression analysis showed that negative expression of DFF45 and TTF-1 was an independent prognostic predictor in gallbladder adenocarcinoma (p < 0.05). The expression of DFF45 and/or TTF-1 is closely related to the carcinogenesis, progression, clinical behavior and prognosis of gallbladder adenocarcinomas. DNA fragmentation factor 45 and TTF-1 could be progression-associated genes correlating with good prognosis in GBC.
keywords:

gallbladder neoplasms, gallbladder polyp, chronic cholecystitis, DNA fragmentation factor 45, thyroid transcription factor 1
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