1887

Abstract

Since both neuraminidase and the haemolytic activity of Sendai virus were inhibited by Cu ions, it was suggested that neuraminidase was essential for haemolysis (Howe & Morgan, 1969). Haemolysis by Newcastle disease virus (NDV) appeared to be intimately associated with the capacity of the virus to become irreversibly attached to the cell (Burnet, 1950), indicating that neuraminidase, responsible for elution of the virus from red blood cells (RBC), was perhaps not required for, or may even have hindered haemolysis.

The results of this study, aimed at the elucidation of the role of neuraminidase in Sendai virus-induced haemolysis, show that: (1) treatment of the virus by disodium ethylenedi-aminetetraacetate (EDTA) or hydroxyethylethylenediaminetriacetate (HEDTA) causes a simultaneous decrease in neuramininidase activity and an increase in haemolytic activity of the virus. (2) 2-deoxy-2,3-dehydro--acetylneuraminic acid (DDANA), a reversible inhibitor of neuraminidase (Meindl & Tuppy, 1969; Meindl 1971), does not interfere with, but augments haemolysis.

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1972-08-01
2023-01-29
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