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Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.
Compilé à partir de 30 articles PubMed · modèle : gemma4:31b
Résumé
Conium maculatum, known as poison hemlock, is a highly toxic weed containing piperidine alkaloids that can cause fatal respiratory failure in humans and animals [PMID:15234067, PMID:30594904, PMID:29135964].
Contexte
Conium maculatum is a common nitrophile weed of the Apiaceae (formerly Umbelliferae) family characterized by long, hollow stems reaching up to 2 meters and white flowers grouped in umbels [PMID:15234067, PMID:10340826]. It is distributed worldwide, with a higher incidence of poisoning reported in European and Mediterranean countries [PMID:30594904].
Usages traditionnels
In Portugal, the plant is used as an ancient technique for river fishing [PMID:40248547]. It has also been used as a traditional medicine for cervix carcinoma, including in homeopathy [PMID:25298670].
Composés actifs
The plant contains piperidine alkaloids, most notably coniine and gamma-coniceine, as well as N-methyl-coniine, conhydrine, pseudoconhydrine, and conmaculatin [PMID:15234067, PMID:10340826, PMID:22063758]. Tap roots may contain furocoumarins, prenylated coumarins, aliphatic C17-polyacetylenes, and elemicin [PMID:32722223].
Mécanisme d'action
Coniine acts as a nicotinic acetylcholine receptor antagonist, mimicking nicotine's effect on the autonomous nervous system [PMID:29135964, PMID:40248547]. This leads to an initial excitatory phase followed by a secondary inhibitory phase, resulting in the inhibition of the nervous system [PMID:40248547, PMID:29135964].
Preuves cliniques
Preuve DCervix carcinoma (in vitro)
Ethanolic extract reduced cell viability and colony formation in HeLa cells by inducing ROS generation and apoptosis [PMID:25298670]
Preuve DPain (mice)
The alkaloid conmaculatin showed strong peripheral and central antinociceptive activity in mice at doses of 10-20mg/kg [PMID:22063758]
Sécurité et effets indésirables
Poisoning causes neurotoxicosis, including tremors, vomiting, muscle paralysis, and respiratory failure/arrest [PMID:30594904, PMID:40248547]. Other severe effects include rhabdomyolysis, acute renal failure, and hemodynamic collapse [PMID:30594904, PMID:27331163, PMID:40248547]. A lethal dose for humans can be as low as 100 to 200 mg of coniine [PMID:34431644].
Grossesse et allaitement
In livestock (cattle, pigs, sheep, and goats), piperidine alkaloids are teratogenic, causing musculoskeletal deformities such as multiple congenital contracture (MCC) and cleft palate in offspring [PMID:3049497, PMID:22449544, PMID:10091132].
Synthèse des preuves
The evidence is primarily based on toxicological reviews, case reports of accidental or intentional poisoning, and in vitro/animal studies. There are no human clinical trials supporting therapeutic use.
Sources PubMed
1.PMID: 15234067 (2004) — Poison hemlock (Conium maculatum L.). · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association
2.PMID: 30594904 (2019) — Conium maculatum intoxication: Literature review and case report on hemlock poisoning. · Forensic science review
4.PMID: 27331163 (2014) — Hemlock (Conium Maculatum) Poisoning In A Child. · Turkish journal of emergency medicine
5.PMID: 10340826 (1999) — Biochemistry of hemlock (Conium maculatum L.) alkaloids and their acute and chronic toxicity in livestock. A review.
Sources gouvernementales
Aucune monographie gouvernementale directe n'est disponible pour cette plante. Le contenu ci-dessous est généré par IA et n'a pas été vérifié par rapport à une source gouvernementale faisant autorité. Utilisez les liens de recherche pour consulter les sources officielles avant de vous fier à ces informations.
· Toxicon : official journal of the International Society on Toxinology
6.PMID: 29135964 (2017) — The killer of Socrates: Coniine and Related Alkaloids in the Plant Kingdom. · Molecules (Basel, Switzerland)
7.PMID: 34431644 (2020) — What kind of poison was used in "The Name of the Rose"? · Archiwum medycyny sadowej i kryminologii
8.PMID: 3049497 (1988) — Toxicoses in livestock from the hemlocks (Conium and Cicuta spp.). · Journal of animal science
9.PMID: 22449544 (2012) — Piperidine alkaloids: human and food animal teratogens. · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association
10.PMID: 32722223 (2020) — Diversity of Secondary Metabolites in Roots from Conium maculatum L. · Plants (Basel, Switzerland)
11.PMID: 10091132 (1999) — Lupines, poison-hemlock and Nicotiana spp: toxicity and teratogenicity in livestock. · Journal of natural toxins
12.PMID: 22063758 (2012) — A novel toxic alkaloid from poison hemlock (Conium maculatum L., Apiaceae): identification, synthesis and antinociceptive activity. · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association
13.PMID: 25298670 (2014) — Anticancer potential of Conium maculatum extract against cancer cells in vitro: Drug-DNA interaction and its ability to induce apoptosis through ROS generation. · Pharmacognosy magazine