Thromb Haemost 1973; 29(02): 461-469
DOI: 10.1055/s-0038-1647786
Original Article
Schattauer GmbH

Neuraminidase Injections in Rabbits

Reduced Platelet Surface Charge, Aggregation and Thrombocytopenia
A. K Grøttum
1   Section of Haematology (Chief, Professor P. F. Hjort), Medical Department A (Chief: Professor E. Gjone), Rikshospitalet, Oslo, Norway
,
M Jeremic
1   Section of Haematology (Chief, Professor P. F. Hjort), Medical Department A (Chief: Professor E. Gjone), Rikshospitalet, Oslo, Norway
› Author Affiliations
Further Information

Publication History

Received for publication 24 September 1972

Publication Date:
30 June 2018 (online)

Summary

Two types of neuraminidase from CL perfringens were injected intravenously in rabbits. Blood platelet electrophoretic mobility was markedly reduced 4 hours after the injection of the enzyme. A marked thrombocytopenia developed gradually with a mean lower level of 55 and 27% of the preinjection number 48 hours after the injec- - tion. White blood cell count and factors V and VIII were reduced.

The results indicate that rabbit platelets with a reduced surface charge5 due to cleavage of sialic acid from the platelet membrane, are not immediately aggregated, trapped or destroyed in vivo. We suggest that the enzyme-induced platelet membrane changes rendered the platelets more susceptible to destruction in the reticuloendothelial system with appearance of thrombocytopenia after some hours.

 
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