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Quantitative Hepatitis B e Antigen: A Better Predictor of Hepatitis B Virus DNA than Quantitative Hepatitis B Surface Antigen.
Clinical Laboratory 2018 April 2
BACKGROUND: Hepatitis B surface antigen is usually secreted by infected hepatocytes in the form of subviral particles rather than infectious virions, while the hepatitis B e antigen originates from the core gene and is modified and secreted by hepatocytes into the circulation and functions as a marker of active viral replication. This study aimed to study the relationship between HBV DNA and quantitative hepatitis B surface and e antigen in Malaysian patients.
METHODS: A total of 82 chronic hepatitis B patients were recruited for this study from the Hepatology Department of Selayang Hospital. Quantitative hepatitis surface and e antigen was performed retrospectively on frozen plasma using enzyme linked immunosorbent assay according to the manufacturer's instructions. Hepatitis B viral DNA was extracted from all plasma samples and quantified using real-time PCR.
RESULTS: Quantitative hepatitis B surface and e antigens were found be high in 54.9% and 52.4% of the patients, respectively, while hepatitis B virus DNA level was high in 70.7%. The median of the viral load of HBV was 8,934.89 IU/mL and both hepatitis B surface and e antigens were also found to be high on average for qHBsAg (M = 5.19 IU/mL, SD ± 4. 33) and qHBeAg (M = 4.74IU/mL, SD ± 4.20), with qHBeAg being more strongly correlated to HBV DNA than qHBsAg (r = 0.893; p < 0.01).
CONCLUSIONS: This study revealed HBeAg to be the most appropriate marker that correlates well with HBV DNA, thus not completely novel but confirmative, and related to the Malaysian situation.
METHODS: A total of 82 chronic hepatitis B patients were recruited for this study from the Hepatology Department of Selayang Hospital. Quantitative hepatitis surface and e antigen was performed retrospectively on frozen plasma using enzyme linked immunosorbent assay according to the manufacturer's instructions. Hepatitis B viral DNA was extracted from all plasma samples and quantified using real-time PCR.
RESULTS: Quantitative hepatitis B surface and e antigens were found be high in 54.9% and 52.4% of the patients, respectively, while hepatitis B virus DNA level was high in 70.7%. The median of the viral load of HBV was 8,934.89 IU/mL and both hepatitis B surface and e antigens were also found to be high on average for qHBsAg (M = 5.19 IU/mL, SD ± 4. 33) and qHBeAg (M = 4.74IU/mL, SD ± 4.20), with qHBeAg being more strongly correlated to HBV DNA than qHBsAg (r = 0.893; p < 0.01).
CONCLUSIONS: This study revealed HBeAg to be the most appropriate marker that correlates well with HBV DNA, thus not completely novel but confirmative, and related to the Malaysian situation.
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