|Case report: fatal poisoning with Colchicum autumnale.|
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|PMID: 14975056 Owner: NLM Status: MEDLINE|
|INTRODUCTION: Colchicum autumnale, commonly known as the autumn crocus, contains alkaloid colchicine with antimitotic properties.
CASE REPORT: A 76-year-old man with a history of alcoholic liver disease and renal insufficiency, who mistakenly ingested Colchicum autumnale instead of wild garlic (Aliium ursinum), presented with nausea, vomiting and diarrhea 12 hours after ingestion. On admission the patient had laboratory signs of dehydration. On the second day the patient became somnolent and developed respiratory insufficiency. The echocardiogram showed heart dilatation with diffuse hypokinesia with positive troponin I. The respiratory insufficiency was further deteriorated by pneumonia, confirmed by chest X-ray and later on by autopsy. Laboratory tests also revealed rhabdomyolysis, coagulopathy and deterioration of renal function and hepatic function. The toxicological analysis disclosed colchicine in the patient's urine (6 microgram/l) and serum (9 microgram/l) on the second day. Therapy was supportive with hydration, vasopressors, mechanical ventilation and antibiotics. On the third day the patient died due to asystolic cardiac arrest.
DISCUSSION AND CONCLUSION: Colchicine poisoning should be considered in patients with gastroenterocolitis after a meal of wild plants. Management includes only intensive support therapy. A more severe clinical presentation should be expected in patients with pre-existing liver and renal diseases. The main reasons for death are cardiovascular collapse, respiratory failure and leukopenia with infection.
|Miran Brvar; Tom Ploj; Gordana Kozelj; Martin Mozina; Marko Noc; Matjaz Bunc|
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|Type: Case Reports; Journal Article Date: 2004-01-02|
|Title: Critical care (London, England) Volume: 8 ISSN: 1466-609X ISO Abbreviation: Crit Care Publication Date: 2004 Feb|
|Created Date: 2004-02-20 Completed Date: 2004-05-13 Revised Date: 2013-06-09|
Medline Journal Info:
|Nlm Unique ID: 9801902 Medline TA: Crit Care Country: England|
|Languages: eng Pagination: R56-9 Citation Subset: IM|
|Poison Control Center, University Medical Center Ljubljana, Slovenia. email@example.com|
|APA/MLA Format Download EndNote Download BibTex|
Colchicum / poisoning*
Diarrhea / chemically induced
Heart Arrest / chemically induced
Liver Diseases, Alcoholic / complications
Nausea / chemically induced
Plants, Edible / poisoning*
Renal Insufficiency / complications
Vomiting / chemically induced
Journal ID (nlm-ta): Crit Care
Publisher: BioMed Central, London
Copyright ? 2004 Brvar et al., licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original URL.
Received Day: 28 Month: 9 Year: 2003
Revision Requested Day: 18 Month: 11 Year: 2003
Revision Received Day: 26 Month: 11 Year: 2003
Accepted Day: 17 Month: 12 Year: 2003
Print publication date: Year: 2004
Electronic publication date: Day: 2 Month: 1 Year: 2004
Volume: 8 Issue: 1
First Page: R56 Last Page: R59
Publisher Id: cc2427
PubMed Id: 14975056
|Case report: fatal poisoning with Colchicum autumnale|
|Miran Brvar1||Email: firstname.lastname@example.org|
1Physician, Poison Control Center, University Medical Center Ljubljana, Slovenia
2Physician, Center for Intensive Internal Medicine, University Medical Center Ljubljana, Slovenia
3Head, Institute of Forensic Medicine, Medical Faculty, Ljubljana, Slovenia
4Head, Poison Control Centre, University Medical Center Ljubljana, Slovenia
5Professor, Head, Center for Intensive Internal Medicine, University Medical Center Ljubljana, Slovenia
6Associated Professor, Institute for Pathophysiology, Medical Faculty and Department for Cardiology, University Medical Center Ljubljana, Slovenia
Colchicum autumnale, commonly known as the autumn crocus, wild saffron and naked lady, contains alkaloid colchicine that is antimitotic, blocking the mitosis by preventing DNA synthesis and tubulin polymerization .
The clinical manifestations of colchicine poisoning are present in three phases following a latent period of 4?12 hours. The first phase is characterized by peripheral leukocytosis, gastrointestinal symptoms with fluid losses and hypovolemic shock. During 24?72 hours, the second stage of intoxication, life-threatening complications occur such as heart failure, arrhythmias, renal failure, hepatic injury, respiratory distress, coagulopathies, bone marrow depression and neuromuscular involvement. This second phase can last for 5?7 days and is followed by the third phase, characterized by leukocytosis and alopecia [2,3].
When ingested, colchicine is rapidly absorbed from the gastrointestinal tract and is primarily metabolized by the liver in a first-order process . There is significant biliary excretion and enterohepatic recirculation [5,6]. Renal excretion is responsible for only about 20% of unchanged colchicine elimination, although this fraction may be increased in the presence of liver disease .
Colchicine has been responsible for numerous intoxications and deaths. Colchicine is used in the management of acute gouty arthritis, and a suicidal colchicine tablet overdose is the most common cause of colchicine poisoning [8,9]. Accidental poisoning with Colchicum autumnale is very rare. Searching Medline we found only four case reports of accidental poisoning with Colchicum autumnale, and in none of them were blood colchicine concentrations measured [10-12].
We report accidental lethal Colchicum autumnale poisoning where blood colchicine levels were obtained.
In spring 2003, a 76-year-old man ate two whole plants regarded as wild garlic (Aliium ursinum). He believed wild garlic to be healthy for his alcoholic liver disease. He also had a history of chronic renal insufficiency and arterial hypertension, which he treated with verapamil and trandalopril. Two hours after the ingestion, he started complaining of nausea. Repeated vomiting and watery diarrhea appeared 4?5 hours after ingestion. Twelve hours later the man arrived at the Emergency Department. He brought with him the remaining plant that he had not yet eaten (Fig. 1). The plant was identified as a poisonous Colchicum autumnale by the toxicologist. The patient was treated with gastric lavage and 30 g oral activated charcoal and was transferred to the intensive care unit.
On arrival at the intensive care unit, the patient complained of diarrhea and abdominal pain. His vital signs were a Glasgow coma scale of 15, a tympanic temperature of 37.1?C, a respiratory rate of 22 counts/min, a pulse of 122 counts/min and a blood pressure of 125/80 mmHg in the supine position. The patient had clinical signs of dehydration and a tender abdomen on palpation. The remaining physical examination was unremarkable. The patient's laboratory test results are presented in Table 1. The electrocardiogram showed a sinus tachycardia, and the chest X-ray was normal. Abdominal ultrasound revealed hepatic steatosis. During day 1 the patient had only gastrointestinal symptoms and was treated with 3000 ml normal saline and repeated doses of activated charcoal. He was given 200 mmol sodium bicarbonate to treat lactic metabolic acidosis.
On day 2 the patient became somnolent. He developed acute respiratory failure, and assisted mechanical ventilation was started. The echocardiogram revealed heart dilatation with an ejection fraction of less than 30%. The electrocardiogram showed only diffuse nonspecific ST changes, yet with positive troponin I values indicating myocardial necrosis (Table 1).
On day 3 the patient developed a high-grade fever and became hypotensive and anuric despite hydration and noradrenaline infusion. Abdominal peristaltic sound could not be detected and abdominal X-ray showed a dilated intestine. Bilateral infiltrates appeared on the chest X-rays. Antibiotic cefuroxime was started. Blood cultures remained negative. Laboratory tests also revealed rhabdomyolysis, coagulopathy and deterioration of metabolic acidosis, renal function and hepatic function (Table 1). Profuse bleeding from the nose appeared and fresh frozen plasma and platelets were given. At the end of day 3 the patient went into asystolic cardiac arrest and cardiopulmonary resuscitation was unsuccessful. Subsequent toxicology analysis by gas chromatography coupled to mass spectrometry showed colchicine in the patient gastric lavage, urine and serum samples, which were stored in light-protected containers (Table 1) . An autopsy showed a dilatated heart with a transversal diameter of the left ventricle of around 65 mm, pulmonary edema, bilateral bronchopneumonia, liver and kidney necrosis, hypocellular bone marrow with diserythopoiesis, dismyeloiesis and dismegacaryopoiesis.
The presented patient mistakenly ingested autumn crocus instead of wild garlic, whose leaves are used as a spice or medical plant. Autumn crocus and wild garlic are quite similar, especially their leaves, and unfortunately they grow in the same areas at the same time .
We can only speculate about the colchicine amount ingested by the patient. The remaining plant that the patient brought to the Emergency Department weighed around 5 g. The colchicine content of autumn crocus is 0.1?0.6% . The total colchicine dose ingested by the patient could be calculated as follows: 2 (plants) ? 5 g (weight of the plant) ? 0.1?0.6% (content of colchicine in the plant)/73 kg (patient's weight). The estimated colchicine dose ingested by the patient was between 0.14 mg/kg (10 mg) and 0.82 mg/kg (60 mg).
According to published data, gastrointestinal symptoms are usually observed at doses less than 0.5 mg/kg and doses greater than 0.8 mg/kg are almost invariably fatal [14,15]. Everything from mild gastroenterocolitis to multiorgan failure followed by death could therefore be expected in our patient. Serum colchicine levels were three to six times more than the upper therapeutic level on the second and third days . We can only speculate about the highest colchicine concentration because the colchicine blood half-life is very unpredictable, reported to be between 20 min  and 19 hours .
We can assume that the colchicine elimination and the blood half-life in our patient were prolonged because the patient had alcoholic liver disease, which reduces the hepatic colchicine metabolism and excretion through the bile system. The patient's liver function was further worsened by colchicine poisoning and later by the evolving shock. An excretion of colchicine could be reduced by verapamil, which is an inhibitor of P-glycoprotein, a protein responsible for colchicine transport from the hepatocyte into bile . A compensatory increase of colchicine excretion through the kidneys was observed in cases of hepatic failure . In our case the compensatory excretion was not possible since the patient's chronic renal insufficiency was additionally deteriorated by hypotension, hypoxia and rhabdomyolysis due to the colchicine effect on muscle cells. The higher colchicine concentration on the third day compared with on the second day observed in our patient corresponds to the two-compartment model of colchicine kinetic coupled with impaired elimination in the second phase, mainly due to liver and renal insufficiency.
On the first day the intoxication caused gastroenterocolitis and dehydration. Dehydration in combination with impaired cardiac function resulted in tissue hypoperfusion with lactic acid metabolic acidosis. The respiratory insufficiency was deteriorated by bilateral pneumonia, confirmed on autopsy. Acute heart failure was probably the result of a direct toxic effect of colchicine on myocardial cells [8,18,19].
Colchicine poisoning should be considered in patients with gastroenterocolitis after a wild plant meal. Blood and urine colchicine determination is useful for diagnostics in doubtful cases. Management includes early intensive support measures despite a relatively mild clinical picture at presentation. Specific therapy such as colchicine antibodies is reported in some case reports as well as in animal studies but it is not yet commercially available [20,21]. A more severe clinical presentation should expected in patients with pre-existing liver and renal diseases. The main reasons for death are cardiovascular collapse, respiratory failure and leukopenia with infection. Hepatic and renal dysfunction as well as certain drugs could worsen the prognosis of poisoning with colchicine.
? In patients with gastroenterocolitis after a wild plants meal, especially when wild garlic is mentioned, we should always consider poisoning with autumn crocus
? Prognosis of colchicine poisoning is worse in patients with pre-existing liver and renal diseases
AST, aspartate aminotransferase; ALT, alanine aminotransferase; LDH, lactate dehydrogenase; CK, creatine kinase.
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[Figure ID: F1]
Colchicum autumnale (Emergency Department).
Laboratory data after Colchicum autumnale ingestion
|Day 1||Day 2||Day 3||Normal value|
|White blood cells (? 109/l)||18.5||15.5||6.9||4.3?10.8|
|Red blood cells (? 1012/l)||4.9||4.8||3.3||4.15?4.90|
|Platelets (? 109/l)||150||115||51||130?400|
|Creatinine (?mol/l)||195||367||524||< 133|
|International Normalized Ratio||1.5||1.6||1.9||1.2|
|Troponin I (?g/l)||< 0.01||0.10||0.37||< 0.06|
|D-dimer (?g/l)||3290||< 250|
AST, aspartate aminotransferase; ALT, alanine aminotransferase; LDH, lactate dehydrogenase; CK, creatine kinase.
Keywords: autumn crocus, colchicine, Colchicum autumnale, death, poisoning.
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