Biomaterial Database

Prevalence of hepatitis B e antigen and its antibody as detected by radioimmunoassays. 1978

I K Mushahwar, and L R Overby, and G Frosner, and F Deinhardt, and C M Ling

A solid-phase radioimmunoassay (RIA) for the detection of hepatitis B e antigen (HBeAg) and antibody (anti-HBe) was developed. The RIA was approximately 1,000-fold more sensitive than rheophoresis for HBeAg, and approximately 6,000-fold more sensitive than rheophoresis for anti-HBe. Generally, less than one-fifth of hepatitis B antigen (HBsAg)-positive sera from blood donors were positive for either HBeAg or anti-HBe by rheophoresis; in contrast, more than 90% of the samples were positive by the RIA method. The ratio of HBeAg to anti-HBe among HBsAg carriers varied in different geographic localities. Also, the presence of HBeAg correlated directly with the titer of HBsAg and the presence of Dane core particles. Anti-HBe was associated with lower titers of serum HBsAg.

UI	MeSH Term	Description	Entries
D007122	Immunoelectrophoresis	A technique that combines protein electrophoresis and double immunodiffusion. In this procedure proteins are first separated by gel electrophoresis (usually agarose), then made visible by immunodiffusion of specific antibodies. A distinct elliptical precipitin arc results for each protein detectable by the antisera.
D009500	Neutralization Tests	The measurement of infection-blocking titer of ANTISERA by testing a series of dilutions for a given virus-antiserum interaction end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology (CPE) or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (ID50) or die (LD50).	Neutralization Test,Test, Neutralization,Tests, Neutralization
D011863	Radioimmunoassay	Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indirectly to measure the binding of the unlabeled substance to a specific antibody or other receptor system. Non-immunogenic substances (e.g., haptens) can be measured if coupled to larger carrier proteins (e.g., bovine gamma-globulin or human serum albumin) capable of inducing antibody formation.	Radioimmunoassays
D002353	Carrier State	The condition of harboring an infective organism without manifesting symptoms of infection. The organism must be readily transmissible to another susceptible host.	Asymptomatic Carrier State,Asymptomatic Infection Carrier,Inapparent Infection Carrier,Presymptomatic Carrier State,Presymptomatic Infection Carrier,Super-spreader Carrier,Superspreader Carrier,Asymptomatic Carrier States,Asymptomatic Infection Carriers,Carrier State, Asymptomatic,Carrier State, Presymptomatic,Carrier States,Carrier, Super-spreader,Carrier, Superspreader,Carriers, Super-spreader,Carriers, Superspreader,Inapparent Infection Carriers,Infection Carrier, Asymptomatic,Infection Carrier, Inapparent,Infection Carrier, Presymptomatic,Presymptomatic Carrier States,Presymptomatic Infection Carriers,Super spreader Carrier,Super-spreader Carriers,Superspreader Carriers
D003378	Counterimmunoelectrophoresis	Immunoelectrophoresis in which immunoprecipitation occurs when antigen at the cathode is caused to migrate in an electric field through a suitable medium of diffusion against a stream of antibody migrating from the anode as a result of endosmotic flow.	Electrosyneresis,Immunoelectroosmophoresis,Immunoelectrophoresis, Countercurrent,Immunoelectrophoresis, Crossover,Countercurrent Immunoelectrophoresis,Crossover Immunoelectrophoresis
D006509	Hepatitis B	INFLAMMATION of the LIVER in humans caused by a member of the ORTHOHEPADNAVIRUS genus, HEPATITIS B VIRUS. It is primarily transmitted by parenteral exposure, such as transfusion of contaminated blood or blood products, but can also be transmitted via sexual or intimate personal contact.	Hepatitis B Virus Infection
D006510	Hepatitis B Antibodies	Antibodies to the HEPATITIS B ANTIGENS, including antibodies to the surface (Australia) and core of the Dane particle and those to the "e" antigens.	Anti-Australia Antigens,Anti-HBAg,Anti-Hepatitis B Antigens,Anti HBAg,Hepatitis B Virus Antibodies,Anti Australia Antigens,Anti Hepatitis B Antigens,Antibodies, Hepatitis B,Antigens, Anti-Australia,Antigens, Anti-Hepatitis B,B Antibodies, Hepatitis,B Antigens, Anti-Hepatitis,HBAg, Anti
D006511	Hepatitis B Antigens	Antigens of the virion of the HEPATITIS B VIRUS or the Dane particle, its surface (HEPATITIS B SURFACE ANTIGENS), core (HEPATITIS B CORE ANTIGENS), and other associated antigens, including the HEPATITIS B E ANTIGENS.	HBAg,Hepatitis B Antigen,Antigen, Hepatitis B,Antigens, Hepatitis B,B Antigen, Hepatitis,B Antigens, Hepatitis
D006512	Hepatitis B Core Antigens	The hepatitis B antigen within the core of the Dane particle, the infectious hepatitis virion.	HBcAg,Hepatitis B Core Antigen
D006514	Hepatitis B Surface Antigens	Those hepatitis B antigens found on the surface of the Dane particle and on the 20 nm spherical and tubular particles. Several subspecificities of the surface antigen are known. These were formerly called the Australia antigen.	Australia Antigen,HBsAg,Hepatitis B Surface Antigen,Antigen, Australia