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Aconitum koreanum

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Aconitum koreanum
Scientific classification
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This page is a soft redirect. Aconitum koreanum
Rapaics

Aconitum koreanum (Hangul: 백부자) (also known as Korean monk's hood) is one of the species of Aconitum. It is one of the crude botanical drugs that has been applied in Chinese medicine during past decades.[1]

Ecology

A. koreanum is a perennial shrub with thickened roots growing to Script error: No such module "convert". in height. It prefers a soil slightly retentive of moisture, such as a moist loam. The shade side of mountain valleys is preferred. Its stems are glabrous and strict. The plant is simple or branched with the leaves crowded. These leaves are alternate and palmately cleft 3-5 and long-petioled and upper leaves shorter almost sessile. Proximal cauline leaves are withered at anthesis.[2] Its leaver are deeply divided again to lanceolate and sharply acuminate. The roots are poisonous. The flower's color is pale yellow or sometimes purplish tint. The flowers bloom from July to August. Its pedicels are short and has 5 petal-like sepals; the upper one clearly hooded, the others flat, the lower 2 narrower than the others.[1] The entire plant is Script error: No such module "convert". -Script error: No such module "convert". in height.[2]

Toxicology

Marked symptoms may appear almost immediately, usually not later than one hour, and "with large doses death is almost instantaneous." Death usually occurs within two to six hours in fatal poisoning (20 to 40 mL of tincture may prove fatal).[3] The initial signs are gastrointestinal including nausea, vomiting, and diarrhea. This is followed by a sensation of burning, tingling, and numbness in the mouth and face, and of burning in the abdomen.[4] In severe poisonings pronounced motor weakness occurs and cutaneous sensations of tingling and numbness spread to the limbs. Cardiovascular features include hypotension, sinus bradycardia, and ventricular arrhythmias. Other features may include sweating, dizziness, difficulty in breathing, headache, and confusion. The main causes of death are ventricular arrhythmias and asystole, paralysis of the heart or of the respiratory center.[3][5] The only post-mortem signs are those of asphyxia.[4]

Treatment of poisoning is mainly supportive. All patients require close monitoring of blood pressure and cardiac rhythm. Gastrointestinal decontamination with activated charcoal can be used if given within one hour of ingestion.[6] The major physiological antidote is atropine, which is used to treat bradycardia. Other drugs used for ventricular arrhythmia include lidocaine, amiodarone, bretylium, flecainide, procainamide, and mexiletine. Cardiopulmonary bypass is used if symptoms are refractory to treatment with these drugs.[5] Successful use of charcoal hemoperfusion has been claimed in patients with severe aconite poisoning.[7]

Poisoning may also occur following picking the leaves without wearing gloves; the aconitine toxin is absorbed easily through the skin. In this event, there will be no gastrointestinal effects. Tingling will start at the point of absorption and extend up the arm to the shoulder, after which the heart will start to be affected. The tingling will be followed by unpleasant numbness. Treatment is similar to poisoning caused by oral ingestion.[citation needed]

Aconitine is a potent neurotoxin that opens tetrodotoxin sensitive sodium channels. It increases influx of sodium through these channels and delays repolarization, thus increasing excitability and promoting ventricular dysrhythmias.

Traditional medicine

The root is traditionally used in Korea to treat chills in legs and arms and articular pain.[citation needed] In China, It has been used in immortal tonic among the folk remedies.[citation needed] However, its general uses in traditional Chinese medicine are for diuresis, cardiotonic, analgesia, neuralgia, gout and, furthermore, even neoplastic effect.[8][9][not in citation given]

Caffeoyl derivatives from the roots of Aconitum koreanum have been shown to have at least some anti-inflammatory effect in vitro.[10]

References

  1. ^ a b c d Medicinal Plants in the Republic of Korea. Seoul Nation University (Natural Products research institute). 1998. p. 4. ISBN 92 9061 120 0. 
  2. ^ a b c Flora of China. "Aconitum coreanum". 
  3. ^ a b The Extra Pharmacopoeia Martindale. Vol. 1, 24th edition. London: The Pharmaceutical Press, 1958, page 38.
  4. ^ a b 12px One or more of the preceding sentences incorporates text from a publication now in the public domainChisholm, Hugh, ed. (1911). "Aconite". Encyclopædia Britannica 1 (11th ed.). Cambridge University Press. pp. 151–152. 
  5. ^ a b Chan TY (April 2009). "Aconite poisoning". Clin Toxicol (Phila) 47 (4): 279–85. PMID 19514874. doi:10.1080/15563650902904407. 
  6. ^ Chyka PA, Seger D, Krenzelok EP, Vale JA; Seger; Krenzelok; Vale; American Academy of Clinical Toxicology; European Association of Poisons Centres Clinical Toxicologists (2005). "Position paper: Single-dose activated charcoal". Clin Toxicol (Phila) 43 (2): 61–87. PMID 15822758. 
  7. ^ Lin CC, Chan TY, Deng JF; Chan; Deng (May 2004). "Clinical features and management of herb-induced aconitine poisoning". Ann Emerg Med 43 (5): 574–9. PMID 15111916. doi:10.1016/j.annemergmed.2003.10.046. 
  8. ^ "The Action of Extract of Aconitum koreanum R. Raymond on isolated clam heart". Korean Journal of Pharmacology. NO. 1 8: 15–25. 1972. 
  9. ^ Tang Q, Yang C, Ye W, Liu J, Zhao S; Yang; Ye; Liu; Zhao (2007). "Preparative isolation and purification of bioactive constituents from Aconitum coreanum by high-speed counter-current chromatography coupled with evaporative light scattering detection". J Chromatogr A 1144 (2): 203–7. PMID 17280679. doi:10.1016/j.chroma.2007.01.058. 
  10. ^ Park KH, Park M, Choi SE, Jeong MS, Kwon JH, Oh MH et al. (2009). "The anti-oxidative and anti-inflammatory effects of caffeoyl derivatives from the roots of Aconitum koreanum R. RAYMOND". Biol Pharm Bull 32 (12): 2029–33. PMID 19952423.