PMID: 8585092Sep 1, 1995Paper

Coronary vasoconstriction is the most probable cause of death of rats intoxicated with botulinolysin, a hemolysin produced by Clostridium botulinum

Toxicon : Official Journal of the International Society on Toxinology
N SugimotoM Matsuda

Abstract

The pathophysiology of lethal intoxication by botulinolysin (Blyn) was studied using anesthetized rats and isolated rat organs. Intravenous injection of 10,000 and 1000 hemolytic units (HU) of Blyn killed rats rapidly while 100 HU of the toxin did not. Congestion and edema of lungs were observed at autopsies of the rats killed by intoxication. Hemoglobinemia was obvious in rats injected with 1000 HU of Blyn but not in rats with 10,000 HU. Electrocardiograms of the intoxicated rats showed depression of T waves but not changes characteristic of hyperpotassemia. All the rats injected with the above doses of Blyn showed a rapid fall in arterial blood pressure (BP) immediately after the toxin injection, and BP soon recovered in rats injected with 100 HU, partially and transiently in rats with 1000 HU, and not in rats with 10,000 HU of Blyn. Perfusion of Blyn (1 HU/ml) to isolated rat hearts caused a rapid and marked increase in perfusion pressure and cessation of spontaneous heart beat. Acetylsalicylic acid (10(-3) M) and quinacrine dihydrochloride (10(-5) M) did not essentially influence the effects of Blyn on the isolated hearts, but verapamil (10(-6) M) inhibited at least the initial increase in perfusion pressure elicited by Bly...Continue Reading

References

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Jan 1, 1991·Toxicon : Official Journal of the International Society on Toxinology·N SugimotoC Y Lee
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Citations

Jul 1, 1997·Toxicon : Official Journal of the International Society on Toxinology·N SugimotoM Matsuda
Nov 15, 2011·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Mervyn B FormanEdwin K Jackson
Oct 15, 2014·Research in Microbiology·Theresa J SmithBrian H Raphael
May 24, 2013·Microbiology and Molecular Biology Reviews : MMBR·Ferdinand C O LosAdam J Ratner

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