Australian Chirodropid Cubozoan Jellyfish Envenomation

Reference work entry
Part of the Toxinology book series (TOXI)

Abstract

The Australian box jellyfish, Chironex fleckeri, is a large dangerous jellyfish inhabiting the waters of northern Australia and nearby Southeast Asia. Despite intensive research over half a century, limited knowledge exists about its venom and toxins and of a related but much less potent chirodropid species Chiropsella bronzei. The jellyfish kills prey rapidly and may severely injure or kill humans with an array of potent toxins. The clinical treatment of human victims is supportive with limited assistance from an existing antivenom. The principal toxins are proteins of around 40–45 kDa which probably perforate cell membranes leading to immediate lysis and subsequent loss of function of vital organs and tissues including cardiac function. In addition, smaller proteins probably damage the function of excitable tissues by perturbations of function of voltage-gated ion channels. These mechanisms occur across the phylum Cnidaria whose members have homologous toxins. No specific treatment for the human victim exists, but effective treatments might be developed from observations that suggest that the poration and ion-channel effects of the toxins are susceptible to blockade with metallic compounds.

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© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Intensive Care Unit, The Royal Children’s HospitalThe University of MelbourneMelbourneAustralia

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