2'-5' oligoadenylate synthetase activity in patients with acute viral hepatitis and chronic type B hepatitis, and its clinical significance.
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The levels of 2′-5′ oligoadenylate synthetase activity (2-5AS) were measured in the lymphocytes and sera of 32 patients with acute viral hepatitis and 20 patients with HBeAg positive chronic type B hepatitis, and the relationship between the effectiveness of interferon (IFN) therapy and 2-5AS reactivity was then studied.<BR>The lymphocyte 2-5AS (L·2-5AS) and the serum 2-5AS (S·2-5AS) levels in patients with any type of acute viral hepatitis at the acute stage were significantly higher than in the healthy subjects. The 2-5AS level in cases of acute type A viral hepatitis was significantly higher than in type B and type non A non B hepatitis. However, no significant difference in the 2-5AS levels between type B hepatitis and type non A non B hepatitis was observed. After recovery, the L·2-5AS and S·2-5AS levels decreased in patients with any type of acute viral hepatitis.<BR>No significant difference between the L·2-5AS level in healthy subjects and patients with chronic type B hepatitis was observed. The S·2-5AS level was significantly higher in patients with chronic type B hepatitis than in healthy subjects.<BR>During IFN administration, the L·2-5AS and S·2-5AS levels increased, with the maximum level and maximum rate of increase obtainted on the 3rd day with respect to the L·2-5AS, and after one week with respect to the S·2-5AS. Of the 20 patients with chronic type B hepatitis with positive HBe antigen, 11 showed normalization of DNA-P, 4 disappearance of HBe antigen and 2 seroconversion of HBe antigen. In cases with a higher maximum rate of increase of the L·2-5AS, the effect of IFN therapy was observed to be greater.
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日本医科大学医学会 | 論文
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