The presence of the two "large" surface proteins of hepatitis B virus (HBV), P39 and GP42 of pre-S1-hepatitis B surface antigen, was assayed in the serum of an experimentally infected chimpanzee by using antibodies to a pre-S1-specific fusion protein synthesized in Escherichia coli. The immune response to pre-S1-hepatitis B surface antigen was monitored by using the pre-S1 fusion protein as an ...

A detailed description is presented of the hemodialysis treatment for 6 weeks of a patient strongly positive for hepatitis B virus ([HBV], hepatitis B surface antigen, hepatitis B e antigen, HBV DNA), which was performed without any special precautions. All 59 patients potentially exposed to the HBV-positive patient, of whom 29 appeared fully unprotected by antibody, were followed for at least ...

HEPAXPERT is a knowledge-based system that interprets the results of routine serologic tests for infection with hepatitis A and B viruses. The following tests are included: hepatitis A virus anti-bodies (anti-HAV), IgM antibodies to the hepatitis A virus (IgM anti-HAV), hepatitis A virus (HAV in stool, hepatitis B surface antigen (HBsAg) and antibodies (qualitative anti-HBs, quantitative anti-H...

History A 37-year-old man first presented in September, 1997 with scaly plaques on the lower limbs, clinically consistent with plaque psoriasis. He was known to be hepatitis B surface antigen positive and hepatitis B e antigen negative. The psoriasis was subsequently treated with topical steroid and acitretin for ten weeks with a good response. He then defaulted follow-up, but reattended in Apr...

results we included 66 eligible studies. the pooled prevalence of hbsag in blood donors of both emro and middle eastern (e and m) countries was 2.03% (95% confidence interval [ci]: 1.79 – 2.26). in addition, the prevalence rates in the emro countries was 1.99% (95% ci: 1.84 – 2.14) and 1.62% in the middle eastern countries (95% ci: 1.36 – 1.88). the prevalence among blood donors with more than ...

conclusions this study showed that the presence of mutation at codons rtl80v, rtl180m and rtm204v in a, b and c domains is associated with higher viral load and resistance to lamivudine (3tc) respectively. results about 6% (3 of 50) of samples were hbeag positive and 94% (47 of 50) of patients were hbeag negative by elisa method. the patients' alt level was between 16 and 95 iu/l with the mean ...