Detection of micronuclei formation and nuclear anomalies in regenerative nodules of human cirrhotic livers and relationship to hepatocellular carcinoma

Detection of micronuclei formation and nuclear anomalies in regenerative nodules of human cirrhotic livers and relationship to hepatocellular carcinoma

Autor Almeida, TMB de Google Scholar
Leitao, R. C. Google Scholar
Andrade, J. D. Google Scholar
Becak, W. Google Scholar
Carrilho, F. J. Google Scholar
Sonohara, S. Google Scholar
Instituição Universidade de São Paulo (USP)
Inst Butantan
Lab Anat Patol Diagnost
Universidade Federal de São Paulo (UNIFESP)
Resumo Human cirrhosis is considered an important factor in hepatocarcinogenesis. the lack of substantial genetics and cytogenetics data in human cirrhosis led us to investigate spontaneous micronuclei formation, as an indicator of chromosomal damage. the analysis was performed in hepatocytes of regenerative, macroregenerative, and tumoral nodules from 30 cases of cirrhosis (paraffin-embedded archival material), retrospectively selected: cryptogenic, hepatitis C virus, and hepatitis C virus associated with hepatocellular carcinoma (HCC). Thirteen control liver samples of healthy organ donors were included. Micronucleated hepatocytes were analyzed with Feulgen-fast-green dyeing techniques. the spontaneous frequency of micronucleated hepatocytes in both regenerative and macroregenerative nodules of all cirrhotic patients was significantly higher than for the normal control group. There was no significant difference in frequency of micronucleated hepatocytes in regenerative nodules compared with macroregenerative nodules for all cases analyzed, whereas a significantly higher frequency of micronucleated hepatocytes was detected in tumoral nodules, compared with cirrhotic regenerative nodules and normal parenchyma. A higher frequency of the nuclear anomalies termed broken-eggs was observed in hepatitis C virus-related samples. Chromatinic losses and genotoxicity already existed in the cirrhotic regenerative nodules, which might predispose to development of HCC. (C) 2004 Elsevier Inc. All rights reserved.
Idioma Inglês
Data 2004-04-01
Publicado em Cancer Genetics and Cytogenetics. New York: Elsevier B.V., v. 150, n. 1, p. 16-21, 2004.
ISSN 0165-4608 (Sherpa/Romeo, fator de impacto)
Editor Elsevier B.V.
Extensão 16-21
Fonte http://dx.doi.org/10.1016/j.cancergencyto.2003.08.001
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000220586700003
URI http://repositorio.unifesp.br/handle/11600/27693

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