Previously, we identified human liver endonexin II (EII) present on human hepatocyte plasma membrane as a specific hepatitis B surface antigen (HBsAg) binding protein. We also showed the spontaneous development of anti-idiotypic (anti-HBsAg) antibodies in rabbits immunized with EII and in chicken immunized with the F(ab')2 fragment of rabbit anti-EII IgG. These findings suggest the existence of...

One hundred eight patients with hepatocellular carcinoma (HCC) underwent serologic testing for HBsAg, antibodies to HBs (anti-HBs), HBc (anti-HBc) and HCV (anti-HCV), and an assay for hepatitis B virus (HBV) DNA by the polymerase chain reaction (PCR). Ten (9.3%) of the 108 patients were positive for HBsAg and 96 (88.8%) were positive for anti-HCV. Both HBsAg and anti-HCV were present in 4 (3.7%...

Thirty-five patients with haemophilia A were studied clinically and serologically between 1971-2 and 1975-6 for evidence of hepatitis B infection. One patient suffered from clinical hepatitis B, and a further eight patients showed antibody responses to hepatitis B surface antigen (HBsAg) consistent with exposure to HBsAg during this period. No evidence for HBsAg exposure was found in 14 patient...

OBJECTIVE To construct and identify multi-gene recombinant expression vector pcDNA3-HBsAg-p30-ROP2. METHOD Primers were designed according to the gene sequences of restriction enzyme cutting site of recombinant pcDNA3-p30-ROP2 and hepatitis B surface antigen (HBsAg). The target fragment of HBsAg was amplified and cloned to expression vector pcDNA3-p30-ROP2 by restriction enzyme digestion and ...

The ability of potato-derived major surface antigen of hepatitis B virus (P-HBsAg) to elicit antibody responses to different dosages of P-HBsAg ranging from 0.02 to 30 μg administered orally in mice was examined. All immunized groups produced specific serum IgG and fecal IgA antibodies against P-HBsAg, even at low levels (<5 μg), after administration of a 0.5-μg yeast-derived HBsAg (Y-HBsAg; LG...

In this study, low molecular weight heparin modified hepatitis B surface antigen (HBsAg) were prepared to evaluate the effect of coating material for nasal vaccine delivery. The developed formulations were characterized for size, zeta potential, entrapment efficiency, and mucin adsorption ability. Plain HBsAg nanoparticles demonstrated negative zeta potential and LMWP coated nanoparticles showe...

BACKGROUND Metabolic syndrome has clinical implications for chronic liver disease, but the relationship between chronic hepatitis B and metabolic syndrome remains unclear. The aim of this study was to determine whether hepatitis B surface antigen (HBsAg) positivity is associated with metabolic syndrome. METHODS Data were obtained from the Third Korean National Health and Nutrition Examination...

We covalently linked to regenerated cellulose filters a high-affinity monoclonal IgM produced against epitopes that reside on hepatitis B viral surface antigen (HBsAg). Conditions were established whereby as much as 250 micrograms of anti-HBsAg IgM could be linked to 2-4 mg of regenerated cellulose acetate by using cyanogen bromide and trichloro-s-triazine coupling agents. The immunoreactivity ...

The performance of a fully automated, random access, enhanced chemiluminescence immunoassay (Ortho/ECi) for the detection of antibody to hepatitis C virus (HCV) (anti-HCV), HBsAg, and antibody to HBsAg (anti-HBsAg), in human serum was compared to a Abbott second-generation enzyme immunoassay (EIA 2.0). The Ortho/ECi assays employ an immunometric technique with enhanced chemiluminescence for opt...

The use of transgenic plants to express orally immunogenic protein antigens is an emerging strategy for vaccine biomanufacturing and delivery. This concept has particular suitability for developing countries. One factor that has limited the development of this technology is the relatively modest levels of accumulation of some antigenic proteins in plant tissues. We used fusion protein design to...