Jun Zhong1, Yue-Qiu Gao, Xue-Hua Sun, Xiao-Jun Zhu, Man Li. 1. Shanghai University of Traditional Chinese Medicine Affiliated Shanghai Shuguang Hospital, Department of Infectious Diseases, Key Laboratory of Liver and Kidney Diseases, Shanghai University of Traditional Chinese Medicine, Ministry of Education E-institute of Shanghai Municipal Education Commission, Shanghai, China.
Abstract
AIM: To investigate the prevalence of hepatitis B virus (HBV) genotype mixtures among patients with chronic hepatitis B (CHB) in Eastern China. METHODS: A total of 4908 chronic HBV patients from Eastern China were enrolled. HBV genotypes and subgenotypes were determined using a multiplex PCR technique. Serum viral loads and hepatitis B e antigen (HBeAg) levels detected using real-time fluorescent quantitative PCR and ELISA assay, respectively. The presence of precore/basic core promoter (PC/BCP) mutations was examined with PCR and direct sequencing of the amplified products. RESULTS: HBV genotypes B, C, D, B+C, and B+D were found in 19.21%, 64.75%, 1.49%, 13.63%, and 0.92% of the patients, respectively. In 669 patients with the genotype mixture B+C, the subgenotypes B2+C2 and B2+C1 accounted for 68.13% and 31.87%, respectively, no other subgenotypes were identified. HBV B+C was more frequent in the patients with moderate CHB than in patients with mild CHB. In patients with moderate CHB, the subgenotype mixture B2+C2 was lower than B2+C1 (51.97% vs 63.38%), while the opposite situation was found in patients with severe CHB (22.15% vs 15.49%). The highest average viral load was found in patients with the genotype B+C mixture. The prevalence of HBV B2+C2 increased in patients from 50 to 59 years of age and was significantly different from the proportion of patients in the same age group with genotype B (23.2% vs 15.2%). A double mutation (G1896A) in the PC was significantly more common in subgenotype B2+C2 than in subgenotype B2+C1. CONCLUSION: The HBV B2+C2 subgenotype was prevalent in CH patients with a high HBV replication status and correlated with a more severe course of the disease.
AIM: To investigate the prevalence of hepatitis B virus (HBV) genotype mixtures among patients with chronic hepatitis B (CHB) in Eastern China. METHODS: A total of 4908 chronic HBVpatients from Eastern China were enrolled. HBV genotypes and subgenotypes were determined using a multiplex PCR technique. Serum viral loads and hepatitis B e antigen (HBeAg) levels detected using real-time fluorescent quantitative PCR and ELISA assay, respectively. The presence of precore/basic core promoter (PC/BCP) mutations was examined with PCR and direct sequencing of the amplified products. RESULTS:HBV genotypes B, C, D, B+C, and B+D were found in 19.21%, 64.75%, 1.49%, 13.63%, and 0.92% of the patients, respectively. In 669 patients with the genotype mixture B+C, the subgenotypes B2+C2 and B2+C1 accounted for 68.13% and 31.87%, respectively, no other subgenotypes were identified. HBV B+C was more frequent in the patients with moderate CHB than in patients with mild CHB. In patients with moderate CHB, the subgenotype mixture B2+C2 was lower than B2+C1 (51.97% vs 63.38%), while the opposite situation was found in patients with severe CHB (22.15% vs 15.49%). The highest average viral load was found in patients with the genotype B+C mixture. The prevalence of HBV B2+C2 increased in patients from 50 to 59 years of age and was significantly different from the proportion of patients in the same age group with genotype B (23.2% vs 15.2%). A double mutation (G1896A) in the PC was significantly more common in subgenotype B2+C2 than in subgenotype B2+C1. CONCLUSION: The HBV B2+C2 subgenotype was prevalent in CH patients with a high HBV replication status and correlated with a more severe course of the disease.
Authors: M E Mendy; T Welzel; O A Lesi; P Hainaut; A J Hall; M H Kuniholm; S McConkey; J J Goedert; S Kaye; S Rowland-Jones; H Whittle; G D Kirk Journal: J Viral Hepat Date: 2009-10-27 Impact factor: 3.728
Authors: Maxime Dougados; Martin Soubrier; Anna Antunez; Peter Balint; Alejandro Balsa; Maya H Buch; Gustavo Casado; Jacqueline Detert; Bassel El-Zorkany; Paul Emery; Najia Hajjaj-Hassouni; Masayoshi Harigai; Shue-Fen Luo; Reka Kurucz; Gabriel Maciel; Emilio Martin Mola; Carlo Maurizio Montecucco; Iain McInnes; Helga Radner; Josef S Smolen; Yeong-Wook Song; Harald Erwin Vonkeman; Kevin Winthrop; Jonathan Kay Journal: Ann Rheum Dis Date: 2013-10-04 Impact factor: 19.103