Skip to main content
Journal of Clinical Pathology logoLink to Journal of Clinical Pathology
. 1969 May;22(3):304–311. doi: 10.1136/jcp.22.3.304

Effects of three cobra venoms on blood coagulation, platelet aggregation, and fibrinolysis

N MacKay 1,2, J C Ferguson 1,2, G P McNicol 1,2
PMCID: PMC474066  PMID: 5814735

Abstract

The effects of the venoms of Naja melanoleuca, Naja nigricollis, and Ophiophagus hannah on blood coagulation, platelet aggregation, and fibrinolysis were studied in vitro. All three venoms were shown to be anticoagulant. This action appeared to be due to an effect on both the extrinsic and blood thromboplastin mechanisms. Platelet aggregation in Chandler's tubes and adenosine diphosphate reactivity were inhibited by the three venoms, although in the case of Ophiophagus hannah venom they were inhibited only with intermediate concentrations. The three venoms possessed proteolytic properties, but when incorporated into purified caseinolytic systems and euglobulin clot lysis systems inhibition of plasmin activity was observed.

Full text

PDF
306

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. BIGGS R., DOUGLAS A. S. The thromboplastin generation test. J Clin Pathol. 1953 Feb;6(1):23–29. doi: 10.1136/jcp.6.1.23. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. BORN G. V., CROSS M. J. Effect of adenosine diphosphate on the concentration of platelets in circulating blood. Nature. 1963 Mar 9;197:974–976. doi: 10.1038/197974a0. [DOI] [PubMed] [Google Scholar]
  3. CHANDLER A. B. In vitro thrombotic coagulation of the blood; a method for producing a thrombus. Lab Invest. 1958 Mar-Apr;7(2):110–114. [PubMed] [Google Scholar]
  4. CUNNINGHAM G. M., MCNICOL G. P., DOUGLAS A. S. EFFECT OF ANTICOAGULANT DRUGS ON PLATELET AGGREGATION IN THE CHANDLER'S TUBE. Lancet. 1965 Apr 3;1(7388):729–730. doi: 10.1016/s0140-6736(65)92089-1. [DOI] [PubMed] [Google Scholar]
  5. DIDISHEIM P., LEWIS J. H. Fibrinolytic and coagulant activities of certain snake venoms and proteases. Proc Soc Exp Biol Med. 1956 Oct;93(1):10–13. doi: 10.3181/00379727-93-22647. [DOI] [PubMed] [Google Scholar]
  6. FLETCHER A. P., ALKJAERSIG N., SHERRY S. The maintenance of a sustained thrombolytic state in man. I. Induction and effects. J Clin Invest. 1959 Jul;38(7):1096–1110. doi: 10.1172/JCI103886. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. KRUSE I., DAM H. Inactivation of thromboplastin by cobra venom. Biochim Biophys Acta. 1950 Apr;5(2):268–274. doi: 10.1016/0006-3002(50)90170-3. [DOI] [PubMed] [Google Scholar]
  8. Mackay N., Ferguson J. C., McNicol G. P. The effects of the venom of the East African green mamba (Dendroaspis angusticeps) on blood coagulation and platelet aggregation. East Afr Med J. 1966 Nov;43(11):454–463. [PubMed] [Google Scholar]
  9. Merskey C. The Laboratory Diagnosis of Haemophilia. J Clin Pathol. 1950 Nov;3(4):301–320. doi: 10.1136/jcp.3.4.301. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. O'BRIEN J. R. The effect of cobra venom and bee venom on plasma: some evidence on the possible chemical composition of the Christmas factor. Br J Haematol. 1956 Oct;2(4):430–432. doi: 10.1111/j.1365-2141.1956.tb06717.x. [DOI] [PubMed] [Google Scholar]
  11. PITNEY W. R., DACIE J. V. A simple method of studying the generation of thrombin in recalcified plasma; application in the investigation of haemophilia. J Clin Pathol. 1953 Feb;6(1):9–14. doi: 10.1136/jcp.6.1.9. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. REMMERT L. F., COHEN P. P. Partial purification and properties of a proteolytic enzyme of human serum. J Biol Chem. 1949 Nov;181(1):431–448. [PubMed] [Google Scholar]

Articles from Journal of Clinical Pathology are provided here courtesy of BMJ Publishing Group

RESOURCES