[Poisonings with Amanita phalloides]
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Rapid High-throughput Species Identification of Botanical Material Using Direct Analysis in Real Time High Resolution Mass Spectrometry
Published on: October 2, 2016
Tomasz Ferenc1, Beata Lukasiewicz, Julita Ciećwierz
1Uniwersytet Medyczny, Lódź.
Abstract:
Amanita phalloides is the most dangerous, poisonous mushroom species in our climatic conditions. It is the cause of 90-95% of all deaths due to mushroom poisoning, a-Amanitin, a polymerase RNA II inhibitor, is mainly responsible for the Amanita phalloides toxic property. Inhibition of polymerase RNA II functioning in a transcription process is connected with inhibition biosynthesis of structural and enzymatic proteins in cells. A lethal dose of a-amanitin is 0.1 mg/kg b.w. for humans. One of the medical problems in Amanita phalloides poisonings is a relatively prolonged latency period (8-24 h) from mushroom ingestion, at the same time the cytotropic action of absorbed toxins is revealed. In severe cases, multi organ failure, renal and hepatitis failure can occur. Deaths in a-amanitin poising cases follows between 6-16 days after intoxication. Mortality in this group of patients is still high and amounts to approximately 20-30% in adults and exceeds 50% in children. If mushroom poisoning occurs, it is best treated with pharmacological agents, extracorporeal methods for toxin removal and liver transplantation. Recent high expectations concerning liver albumin dialysis (based on MARS) should support liver regeneration and will also help with possible liver transplantation. In a medical community it is generally believed that every suspected Amanita phalloides poisoning should be referred to a specialized health center.
Insights
Amanita phalloides mushrooms cause 90% of fatal poisonings due to the toxin alpha-amanitin. Prompt medical care, including toxin removal and potential liver transplant, is crucial for survival.
Area of Science:
- Toxicology
- Mycology
Context:
- Amanita phalloides is the deadliest mushroom in temperate regions.
- It accounts for 90-95% of fatal mushroom poisonings.
- Alpha-amanitin is the primary toxin responsible for its lethality.
Purpose:
- To detail the toxicological mechanisms of Amanita phalloides.
- To outline the clinical manifestations and mortality rates of alpha-amanitin poisoning.
- To discuss current and emerging treatment strategies for Amanita phalloides intoxication.
Summary:
- Alpha-amanitin inhibits RNA Polymerase II, halting protein synthesis and leading to cell death.
- A prolonged latency period (8-24 hours) precedes severe symptoms like multi-organ failure.
- Mortality remains high (20-30% in adults, >50% in children), necessitating specialized care.
Impact:
- Highlights the critical need for immediate medical intervention in suspected cases.
- Emphasizes the role of extracorporeal methods and liver transplantation in management.
- Supports the referral of all Amanita phalloides poisonings to specialized centers for optimal outcomes.
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