Immunoglobulin class M anti-hepatitis B core antigen for serodiagnosis of acute hepatitis: Pitfalls and recommendations

Clinical and prognostic values of anti-hepatitis B core immunoglobulin M detection in asymptomatic hepatitis B surface antigen carriers.

OBJECTIVE The aim of this study is to evaluate the clinical and prognostic values of persistence of anti-hepatitis B core immunoglobulin M antibody in asymptomatic adults chronic hepatitis B surface antigen anti-hepatitis Be carriers and its absence in others. METHODS Fifty-two hepatitis B surface antigen/anti-hepatitis Be carriers with and 32 without anti-hepatitis B core immunoglobulin M ma...

Determination of immunoglobulin M antibodies against hepatitis B core antigen and hepatitis A virus by reorienting sucrose gradient high-speed centrifugation for diagnosis of acute viral-hepatitis.

Immunoglobulin M (IgM) antibodies against hepatitis B core antigen (anti-HBc) and hepatitis A virus (anti-HAV) were determined in 41 cases of acute viral hepatitis. In sera positive for anti-HBc or anti-HAV, IgM was separated from IgG by reorienting sucrose gradient high-speed centrifugation, and the IgG- and IgM-containing serum fractions were tested for the presence of specific antibody by ra...

Immunoglobulin M anti-hepatitis A virus determination reorienting gradient centrifugation for diagnosis of Acute Hepatitis A.

The persistence of antibody to hepatitis A antigen (anti-HAV) of the immunoglobulin M (IgM) class was evaluated in 88 sera of 51 acute hepatitis A patients. IgM was separated from IgG by a 2-h reorienting sucrose gradient ultracentrifugation, and the titer of anti-HAV was determined in the IgG- and IgM-containing fractions by solid-hase radioimmunoassay. IgM anti-HAV was the predominating antib...

Expression of Hepatitis B Virus Core Antigen in Native and Fusion Forms in E. coli

DNA coding for the core antigen from hepatitis B Virus (HBcAg) was amplified, cloned and propagated in E. coli. The core protein was expressed in E. coli and the product was readily detected by Western blot. This protein can be used as a diagnostic material in serum screening tests. To increase the level of expression of this antigen in bacteria, two plasmids were constructed in which the gene ...

Outcome of Intravenous Immunoglobulin-Transmitted HTLV-I, Hepatitis B, Hepatitis C, and HIV infections