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A case of life threatening envenoming by a wild specimen of the inland taipan, Oxyuranus microlepidotus, is described. There have been 11 previously well-documented envenomings by O. microlepidotus, but only 2 were inflicted by wild snakes. Envenomed patients have presented predominantly with defibrinating coagulopathy and neurotoxicity.The victim was seeking to observe members of an isolated population...
The ancient perceptions of “venomous” and “poisonous snakes”, as well as the Indo-European (IE) etymological origins of the term “venom” specifically associated with snakes are considered. Although several ancient cultures perceived snakes as symbols of fecundity and renewal, concurrent beliefs also associated venomous snakes with undesirable human characteristics or as portending non-propitious events...
The Australian white-tailed spiders (“WTS”; Lamponidae: notably Lampona cylindrata & Lampona murina) have a continuing reputation on Internet sites as a cause of skin ulceration, labelled “necrotic arachnidism”, despite an increasing number of peer-reviewed publications debunking this reputation, with >135 confirmed cases now reported without any evidence of necrosis. We present here a case...
The mulga snake (Pseudechis australis) is the largest terrestrial venomous snake in Australia. It is capable of inflicting severe and occasionally fatal envenoming, but there have been few studies of P. australis bites.To highlight and reinforce the main features of P. australis envenoming and to provide a clearer picture of the epidemiology of bites from this species.Selected case records kept by...
Non-front-fanged colubroid snakes (NFFC; formerly and artificially taxonomically assembled as “colubrids”) comprise about 70% of extant snake species and include several taxa now known to cause lethal or life threatening envenoming in humans. Although the medical risks of bites by only a handful of species have been documented, a growing number of NFFC are implicated in medically significant bites...
Venom ophthalmia caused by venoms of spitting elapid and other snakes: report of ten cases with review of epidemiology, clinical features, pathophysiology and management. Chu, ER, Weinstein, SA, White, J and Warrell, DA. Toxicon XX:xxx–xxx. We present ten cases of ocular injury following instillation into the eye of snake venoms or toxins by spitting elapids and other snakes. The natural history of...
Nerium oleander (common oleander) and Thevetia peruviana (yellow oleander) are potentially lethal plants after ingestion. Poisoning by these plants is a common toxicological emergency in tropical and subtropical parts of the world and intentional self-harm using T. peruviana is prevalent in South Asian countries, especially India and Sri Lanka. All parts of these plants are toxic, and contain a variety...
A case of clinically significant local envenoming resulting from a bite inflicted by a Western hognose snake, Heterodon nasicus, is described. The patient was bitten while offering a juvenile mouse to a captive snake. The snake maintained a grip on the patient's arm (left anticubital fossa) for several minutes. The bite resulted in marked edema, ecchymoses, lymphadenopathy, cutaneous signs suggestive...
Waglerins are 22-24 residue lethal peptides, found in the venom of Trimeresurus (Tropidolaemus) wagleri. The effects upon lethality and immunoreactivity resulting from structural modifications of these peptides were studied. A synthetic analogue with alanine residues in place of the two half-cystines of native peptide was nontoxic, suggesting that the single intramolecular disulfide bond in waglerins...
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