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. 2002 Oct;8(5):822-6.
doi: 10.3748/wjg.v8.i5.822.

Expression of p53 and C-myc genes and its clinical relevance in the hepatocellular carcinomatous and pericarcinomatous tissues

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Expression of p53 and C-myc genes and its clinical relevance in the hepatocellular carcinomatous and pericarcinomatous tissues

Zhao-Shan Niu et al. World J Gastroenterol. 2002 Oct.

Abstract

Aim: To investigate the possible roles of p53 and C-myc genes in the primary hepatocellular carcinogenesis and the relationship between the liver hyperplastic nodule (LHN) and hepatocellular carcinoma(HCC).

Methods: The expression of p53 and C-myc genes was detected immunohistochemically in 73 and 60 cases of HCC and pericarcinomatous tissues, respectively.

Results: The positive expression of p53 in HCC was significantly higher than that in pericarcinomatous tissues (P<0.05). In pericarcinomatous tissues, the p53 expression was observed only in LHN, but not in liver cirrhosis (LC) and normal liver tissues. The positive expression rate of C-myc in HCC or LHN was significantly higher than that in LC or normal liver tissues (P<0.05 and P<0.01), however, no significant difference was found between HCC and LHN (P>0.05). The positive expression rate of p53 and C-myc in HCC was correlated with the histological differentiation, that in the poorly differentiated was significantly higher than that in well differentiated samples (P<0.05).

Conclusion: The overexpression of p53 and C-myc genes might play a role in the carcinogenesis of HCC; And LHN seems a preneoplastic lesion related to hepatocarcinogenesis; No evidence supports that LC contribute directly to the hepatocarcinogenesis.

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Figures

Figure 1
Figure 1
The positive expression of p53 gene in HCC. LSAB × 200
Figure 2
Figure 2
The positive expression of p53 gene in LHN. LSAB × 200
Figure 3
Figure 3
The positive expression of C-myc gene in HCC. LSAB × 200
Figure 4
Figure 4
The positive expression of C-myc gene in LHN. LSAB × 200
Figure 5
Figure 5
The positive expression of C-myc gene in LC. LSAB × 200

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