Abstract
Hepatitis A antigen (HA Ag) was purified from feces collected during acute illness from patients with naturally occurring viral hepatitis, type A. Positive fecal specimens were identified by immune electron microscopy, but for detection of HA Agduring purification immune adherence hemagglutination (IAHA) and microtiter solid-phase radioimmunoassay were used. Isopycnic banding in cesium chloride, rate-zonal separation in sucrose, and preparative zonal electrophoresis were used in various combinations for successive purification, and the purified antigen was successfully used in a test for antibody by IAHA. Seronconversions to HA Ag were demonstrated by IAHA in 20 instances of hepatitis A virus infection, but in none of six cases of type B hepatitis or three cases of post-transfusion hepatitis unrelated to heaptitis A or B viruses, nor in two individuals without hepatitis. In addition, the temporal pattern of antibody development during type A hepatitis was studied in serial sera from an experimentally infected chimpanzee. Antibody titers by IAHA correlated well with antibody ratings determined by immune electron microscopy.
MeSH Terms
Antibodies, Viral/analysis
Antigens, Viral/analysis,isolation & purification
Centrifugation, Density Gradient
Centrifugation, Isopycnic
Electrophoresis
Feces/microbiology
Hemagglutination Tests
Hepatitis B Antigens/immunology
Hepatovirus/ultrastructure
Humans
Immune Adherence Reaction
In Vitro Techniques
Radioimmunoassay
Chemicals
Antibodies, Viral
Antigens, Viral
Hepatitis B Antigens
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Moritsugu Y
Dienstag J L
Valdesuso J
Wong D C
Wagner J
Routenberg J A
Purcell R H
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