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  • Title: Etiopathogenetic aspects of hepatitis A. I. Excretion of hepatitis A virus, biochemistry of liver function, and humoral immune response in patients with hepatitis A on admission to hospital.
    Author: Slusarczyk J, Hansson BG, Nordenfelt E, Krawczyński K, Karwowska S, Knap J.
    Journal: J Med Virol; 1985 Feb; 15(2):105-12. PubMed ID: 2983007.
    Abstract:
    The excretion of hepatitis A virus (HAV) in stools from 30 patients with clinically overt hepatitis A infection on the day of their admission to the hospital was determined and compared with the dynamics and values of biochemical indices of hepatocyte injury as well as with the immune response to HAV. Virus was found in 16 out of 30 stools (53%) collected within 1 week after the appearance of clinical symptoms. In sera obtained on the day of hospitalization both IgM and IgA anti-HAV were detected in all of the 30 patients, while IgG anti-HAV were found in 20 (67%). There was a correlation between HAV excretion and increasing SGPT upon admission to hospital, while the level of SGPT or bilirubin as well as presence or absence of IgG anti-HAV did not correlate with excretion of HAV. HAV from stools was characterized morphologically and physicochemically. The majority of particles visualized by immune electron microscopy had electrondense appearance, while electron-lucid particles were only occasionally encountered. Isopycnic banding of HAV in CsCl revealed a broad range of densities with HAV activity. Rebanding of pooled fractions containing HAV revealed peak amounts of the virus in fractions with densities 1.32-1.33 gm/cm3.
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