Abstract
We analyzed full-length sequence of hepatitis B virus (HBV) recovered from two pileated gibbons (Hylobates pileatus) originally born in East Asia. Two animals possessed a viral genome of 3182 nt in length with a 33 nt deletion in the pre-S1 region, and designated HBV PG-Makiko and HBV PG-Yohko, respectively. Both sequences had 65–90% similarity to type A–G of human HBV isolates. Phylogenetic analysis demonstrated that both isolates were distinct from the human and other nonhuman primate HBV isolates, but could be classified into gibbon isolates that were previously reported by others. Small spherical and tubular particles and large particles with outer envelopes were observed in the serum under immunoelectron microscopic examination. By immunohistochemical staining, HBsAg and HBcAg were detected in the cytoplasm and nuclei of hepatocytes, respectively. Our results suggested that HBV found in these animals is indigenous to their respective hosts and not recent acquisitions from human.
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Aiba, N., Nishimura, H., Arakawa, Y. et al. Complete Nucleotide Sequence and Phylogenetic Analyses of Hepatitis B Virus Isolated from Two Pileated Gibbons. Virus Genes 27, 219–226 (2003). https://doi.org/10.1023/A:1026387614162
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DOI: https://doi.org/10.1023/A:1026387614162