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Human Placenta Extract Could Promote Proliferating Cell Nuclear Antigen Expression during Liver Regeneration Induced by Partial Hepatectomy in Rats
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  • Journal title : Applied Microscopy
  • Volume 42, Issue 3,  2012, pp.115-123
  • Publisher : Korean Society of Electron Microscopy
  • DOI : 10.9729/AM.2012.42.3.115
 Title & Authors
Human Placenta Extract Could Promote Proliferating Cell Nuclear Antigen Expression during Liver Regeneration Induced by Partial Hepatectomy in Rats
Kim, Ji-Hyun; Han, Kyu-Boem; Choi, Yong-Soo; Lee, Young-Jun; Yoon, Kwang-Ho; Han, Man-Deuk; Kim, Wan-Jong;
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Human placenta extract (hPE) has therapeutic potential against certain diseases such as burn injury, liver cirrhosis and chronic wound through stimulating tissue repair processes. However, the effects of hPE on liver regeneration in animals are unknown. This study investigated the effect of hPE on the expression of proliferating cell nuclear antigen (PCNA) during liver regeneration induced by partial hepatectomy (PH) in rats. The activities of AST, ALT and ALP increased during a few days after PH. A high level of ALP was particularly seen at day 3 in the control group. All the levels of experimental groups were normalized by day 5 after PH. On immunohistochemistry, the expression of PCNA increased at the early days, showed a peak at day 3 after PH. The PCNA staining was more obvious in the experimental group over the whole period. By western blotting, PCNA seemed to be more strongly expressed in the hPE injected group in the early stage and fell to almost undetectable levels at day 7. On immunocytochemical observations, the number of PCNA-gold particles in the nuclei at day 1 of the hPE treated groups was more than those of the untreated groups. The results suggest that hPE could accelerate liver regeneration induced by PH involving the expression of PCNA in rats.
Human placenta extract;Liver regeneration;Partial hepatectomy;PCNA;
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