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. 1992 Feb;140(2):513–520.

Analysis of proliferating hepatocytes using a monoclonal antibody against proliferating cell nuclear antigen/cyclin in embedded tissues from various liver diseases fixed in formaldehyde.

N Kawakita 1, S Seki 1, H Sakaguchi 1, A Yanai 1, T Kuroki 1, Y Mizoguchi 1, K Kobayashi 1, T Monna 1
PMCID: PMC1886429  PMID: 1346735

Abstract

The authors studied histochemically the morphologic features of proliferating hepatocytes positive for proliferating cell nuclear antigen (PCNA/cyclin) to analyze the process of liver regeneration in embedded tissues fixed with formaldehyde using an anti-PCNA/cyclin monoclonal antibody. In liver specimens from patients with acute viral hepatitis (AVH) and confluent necrosis, many small basophilic hepatocytes surrounding large clear hepatocytes were positively stained in the areas next to the confluent necrosis. Therefore these small hepatocytes may be daughter cells derived from large clear hepatocytes that probably enter the mitotic cell cycle repeatedly to repair a large necrotic area. In the case of AVH with spotty necrosis, the positively stained hepatocytes were scattered around the necrotic foci. In the liver specimens from patients with chronic active hepatitis, most of the positively stained hepatocytes were located next to the necrotic area. As for cirrhosis of the liver, the number of hepatocytes positive for PCNA/cyclin varied greatly in different pseudolobules, and in the specimens of hepatocellular carcinoma (HCC), the HCC cells positive for PCNA/cyclin were detected throughout the cancer nests.

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Selected References

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