Differential integration rates of hepatitis B virus DNA in the liver of children with chronic hepatitis B virus infection and hepatocellular carcinoma. 2005

Hsiang-Po Huang, and Daw-Jen Tsuei, and Kuan-Jan Wang, and Ying-Lien Chen, and Yen-Hsuan Ni, and Yung-Ming Jeng, and Huey-Ling Chen, and Hong-Yuan Hsu, and Mei-Hwei Chang
Department of Pediatrics, College of Medicine, National Taiwan University, 10016 Taipei, Taiwan.

OBJECTIVE Integration of hepatitis B virus-DNA (HBV-DNA) into the host genome, a phenomenon found frequently in hepatocellular carcinomas (HCC) and causally linked to oncogenesis, has not been well characterized in children. The aim of the present study was to determine the prevalence of HBV integration more accurately and to decide whether the integration rate varies at different stages of chronic HBV infection in children. METHODS Of 13 children with chronic hepatitis, 14 liver biopsy tissues were analyzed. One liver tissue with pure liver cirrhosis, nine non-tumor, and nine tumor liver tissues from children with HCC were analyzed by a very sensitive method, inverse polymerase chain reaction (IPCR). RESULTS Thirteen genuine viral-host junctional sequences from 23 patients were successfully isolated and proved that IPCR is a useful method in this context. The results also indicated that the detection rate of HBV-DNA integration increased in parallel with the progress of liver histology towards the neoplastic transformation, with 0% in the liver of chronic hepatitis, 22.2% in non-tumor livers of HCC patients, and 66.7% in tumor liver tissues of HCC patients. CONCLUSIONS The present results indicate that integration of HBV-DNA into the host genome was rarely confirmed at the early stage of chronic hepatitis in children until the stage of HCC formation.

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008113 Liver Neoplasms Tumors or cancer of the LIVER. Cancer of Liver,Hepatic Cancer,Liver Cancer,Cancer of the Liver,Cancer, Hepatocellular,Hepatic Neoplasms,Hepatocellular Cancer,Neoplasms, Hepatic,Neoplasms, Liver,Cancer, Hepatic,Cancer, Liver,Cancers, Hepatic,Cancers, Hepatocellular,Cancers, Liver,Hepatic Cancers,Hepatic Neoplasm,Hepatocellular Cancers,Liver Cancers,Liver Neoplasm,Neoplasm, Hepatic,Neoplasm, Liver
D008297 Male Males
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D004262 DNA Restriction Enzymes Enzymes that are part of the restriction-modification systems. They catalyze the endonucleolytic cleavage of DNA sequences which lack the species-specific methylation pattern in the host cell's DNA. Cleavage yields random or specific double-stranded fragments with terminal 5'-phosphates. The function of restriction enzymes is to destroy any foreign DNA that invades the host cell. Most have been studied in bacterial systems, but a few have been found in eukaryotic organisms. They are also used as tools for the systematic dissection and mapping of chromosomes, in the determination of base sequences of DNAs, and have made it possible to splice and recombine genes from one organism into the genome of another. EC 3.21.1. Restriction Endonucleases,DNA Restriction Enzyme,Restriction Endonuclease,Endonuclease, Restriction,Endonucleases, Restriction,Enzymes, DNA Restriction,Restriction Enzyme, DNA,Restriction Enzymes, DNA
D004279 DNA, Viral Deoxyribonucleic acid that makes up the genetic material of viruses. Viral DNA
D005260 Female Females
D006515 Hepatitis B virus The type species of the genus ORTHOHEPADNAVIRUS which causes human HEPATITIS B and is also apparently a causal agent in human HEPATOCELLULAR CARCINOMA. The Dane particle is an intact hepatitis virion, named after its discoverer. Non-infectious spherical and tubular particles are also seen in the serum. Dane Particle,Hepatitis Virus, Homologous Serum,B virus, Hepatitis,Hepatitis B viruses,Particle, Dane,viruses, Hepatitis B
D006528 Carcinoma, Hepatocellular A primary malignant neoplasm of epithelial liver cells. It ranges from a well-differentiated tumor with EPITHELIAL CELLS indistinguishable from normal HEPATOCYTES to a poorly differentiated neoplasm. The cells may be uniform or markedly pleomorphic, or form GIANT CELLS. Several classification schemes have been suggested. Hepatocellular Carcinoma,Hepatoma,Liver Cancer, Adult,Liver Cell Carcinoma,Liver Cell Carcinoma, Adult,Adult Liver Cancer,Adult Liver Cancers,Cancer, Adult Liver,Cancers, Adult Liver,Carcinoma, Liver Cell,Carcinomas, Hepatocellular,Carcinomas, Liver Cell,Cell Carcinoma, Liver,Cell Carcinomas, Liver,Hepatocellular Carcinomas,Hepatomas,Liver Cancers, Adult,Liver Cell Carcinomas
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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