Co-ingestion of amatoxins and isoxazoles-containing mushrooms and successful treatment: A case report

Toxicon. 2015 Sep:103:55-9. doi: 10.1016/j.toxicon.2015.06.012. Epub 2015 Jun 16.

Abstract

Mushroom poisonings occur when ingestion of wild mushrooms containing toxins takes place, placing the consumers at life-threatening risk. In the present case report, an unusual multiple poisoning with isoxazoles- and amatoxins-containing mushrooms in a context of altered mental state and poorly controlled hypertension is presented. A 68-year-old female was presented to São João hospital (Portugal) with complaints of extreme dizziness, hallucinations, vertigo and imbalance, 3 h after consuming a stew of wild mushrooms. The first observations revealed altered mental state and elevated blood pressure. The examination of cooked mushroom fragments allowed a preliminary identification of Amanita pantherina. Gas chromatography-mass spectrometry (GC-MS) showed the presence of muscimol in urine. Moreover, through high-performance liquid chromatography-ultraviolet detection (HPLC-UV) analysis of the gastric juice, the presence of α-amanitin was found, showing that amatoxins-containing mushrooms were also included in the stew. After 4 days of supportive treatment, activated charcoal, silybin and N-acetylcysteine, the patient recovered being discharged 10 days post-ingestion with no organ complications. The prompt and appropriate therapy protocol for life-threatening amatoxins toxicity probably saved the patient's life as oral absorption was decreased and also supportive care was immediately started.

Keywords: Amanita pantherina; Amanita phalloides; Amatoxins; Intoxication; Isoxazoles; Wild mushrooms.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetylcysteine / therapeutic use
  • Agaricales / chemistry*
  • Aged
  • Alpha-Amanitin / analysis
  • Amanita / chemistry
  • Amanitins / administration & dosage
  • Amanitins / toxicity*
  • Charcoal / therapeutic use
  • Female
  • Gas Chromatography-Mass Spectrometry
  • Humans
  • Isoxazoles / administration & dosage
  • Isoxazoles / toxicity*
  • Mushroom Poisoning / diagnosis
  • Mushroom Poisoning / drug therapy
  • Silybin
  • Silymarin / therapeutic use

Substances

  • Alpha-Amanitin
  • Amanitins
  • Isoxazoles
  • Silymarin
  • Charcoal
  • Silybin
  • amatoxin
  • Acetylcysteine