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An enzyme immunoassay for hepatitis B e-antigen and antibody
Journal of Virological Methods
|September 1, 1981
Abstract:
A solid-phase enzyme-linked immunoassay for the detection of hepatitis B e-antigen (HBeAg) and antibody (anti-HBe) was developed and compared with rheophoresis and radioimmunoassay (RIA). The enzyme-immunoassay (EIA) was similar to RIA in sensitivity and was approximately 1000-fold more sensitive than rheophoresis for HBeAg, and approximately 6000-fold more sensitive than rheophoresis for anti-HBe.
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01:33Enzyme-Linked Immunosorbent Assay
In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or quantified.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or quantified.
01:25Hepatitis
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...