Abstract
Removal of calcium by either citrate, oxalate, or ethylenediaminetetraacetate inhibited coagulation of blood at an early stage and prevented the release of β-lysin from platelets. In contrast, heparin caused platelet agglutination and stimulated β-lysin release in vitro and in vivo. This release was calcium dependent and may have been due to a calcium-dependent reaction in the blood coagulation sequence. Thrombin which by-passed the early calcium-dependent stages of coagulation directly stimulated the release of β-lysin from platelets. However, thrombin alone or in combination with other plasma factors was not as effective in releasing β-lysin as the regular coagulation process. Thrombin's platelet degranulating activity correlated with its β-lysin releasing activity. In contrast to thrombin, staphylococcal coagulase, which also by-passed the calcium-dependent stages of coagulation, coagulated citrated blood without releasing β-lysin. The release of β-lysin has been observed previously in the absence of blood coagulation, but this is the first observation of coagulation without β-lysin release. It is clear that β-lysin is released from platelets during coagulation by the direct action of thrombin and that it may be released in an earlier calcium-dependent reaction.
Full text
PDF







Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Bennett B., Ratnoff O. D. The normal coagulation mechanism. Med Clin North Am. 1972 Jan;56(1):95–104. doi: 10.1016/s0025-7125(16)32425-7. [DOI] [PubMed] [Google Scholar]
- DONALDSON D. M., ELLSWORTH B., MATHESON A. SEPARATION AND PURIFICATION OF BETA-LYSIN FROM NORMAL SERUM. J Immunol. 1964 Jun;92:896–901. [PubMed] [Google Scholar]
- DONALDSON D. M., JENSEN R. S., JENSEN B. M., MATHESON A. SEROLOGICAL RELATIONSHIPS AMONG BETA-LYSIN, PLAKIN, AND LEUKIN. J Bacteriol. 1964 Oct;88:1049–1055. doi: 10.1128/jb.88.4.1049-1055.1964. [DOI] [PMC free article] [PubMed] [Google Scholar]
- DONALDSON D. M., MARCUS S. Studies on serum bactericidal activity; interrelationships of heparin, citrate, protamine and xirradiation on serum and plasma bactericidal activity against Bacillus subtilis. J Immunol. 1958 Oct;81(4):292–296. [PubMed] [Google Scholar]
- Eika C. Heparin-induced platelet release and refractory platelets. Lancet. 1972 Jun 17;1(7764):1343–1344. doi: 10.1016/s0140-6736(72)91077-x. [DOI] [PubMed] [Google Scholar]
- Gentry P. W., Alexander B. Specific coagulation factor adsorption to insoluble heparin. Biochem Biophys Res Commun. 1973 Jan 23;50(2):500–509. doi: 10.1016/0006-291x(73)90868-1. [DOI] [PubMed] [Google Scholar]
- HIRSCH J. G. Comparative bactericidal activities of blood serum and plasma serum. J Exp Med. 1960 Jul 1;112:15–22. doi: 10.1084/jem.112.1.15. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hess W. M. Fixation and staining of fungus hyphae and host plant root tissues for electron microscopy. Stain Technol. 1966 Jan;41(1):27–35. doi: 10.3109/10520296609116276. [DOI] [PubMed] [Google Scholar]
- MACMILLAN R. L., BROWN K. W. Heparin and thromboplastin. J Lab Clin Med. 1954 Sep;44(3):378–386. [PubMed] [Google Scholar]
- Macfarlane R. G. A. The blood clotting mechanism. The development of a theory of blood coagulation. Proc R Soc Lond B Biol Sci. 1969 Jul 1;173(1032):261–268. doi: 10.1098/rspb.1969.0051. [DOI] [PubMed] [Google Scholar]
- Mojovic B., Mojovic N., Tager M., Drummond M. C. Staphylocoagulase as a hemostatic agent. Yale J Biol Med. 1969 Aug;42(1):11–20. [PMC free article] [PubMed] [Google Scholar]
- Tew J. G., Hess W. M., Donaldson D. M. Lysozyme and beta-lysin release stimulated by antigen-antibody complexes and bacteria. J Immunol. 1969 Mar;102(3):743–750. [PubMed] [Google Scholar]
- Tirunarayanan M. O. Investigations on the enzymes and toxins of staphylococci. Stimulation of coagulase biosynthesis by glucose and bicarbonate. Acta Pathol Microbiol Scand. 1966;68(2):273–280. doi: 10.1111/apm.1966.68.2.273. [DOI] [PubMed] [Google Scholar]
- ZOLLI Z., Jr, SANCLEMENTE C. L. PURIFICATION AND CHARACTERIZATION OF STAPHYLOCOAGULASE. J Bacteriol. 1963 Sep;86:527–535. doi: 10.1128/jb.86.3.527-535.1963. [DOI] [PMC free article] [PubMed] [Google Scholar]