(tinctura Strychnos guianensis)
from AMAZON HERBS®
Strychnos guianensis (Curare) is a climbing woody vine (liana) growing in the Amazon rainforest.
The curare (the main poison) is obtained from the bark of this liana. It works by affecting neuromuscular transmissions. It is basically a natural muscle relaxant; causes death by paralyzing the respiratory system of primates, resulting in asphyxiation.
Used by the Amerindians as an arrow poison together with other plants that speed up the heartbeat. The animal, shot with an arrow, of which the point is dipped in the poison, remains alert throughout the whole process.
However, the bark is also a potent natural sedative and can be used in the treatment of convulsive and spasmodic disorders, when applied by a trained herbalist or homeopath.
Alkaloid D-tubocurarine, mono- and bisindole quaternary alkaloids: Guiaflavine, 5',6'-dehydroguiaflavine, 9-methoxy-Nb-methylgeissoschizol; C-alkaloid O, fluorocurine, mavacurine, macusine B and C-profluorocurine.
Mono- and bisindole quaternary alkaloids isolated from the stem bark of Strychnos guianensis have been shown to be effective blockers of neuromuscular transmission in mice. A human clonal cell line (TE671) expressing muscle-type nicotinic acetylcholine receptors. The agonist carbamylcholine activated a receptor-mediated 86Rb+ efflux and this activation was antagonized by the indole alkaloids, the most active being bisindole bisquaternary compounds. The most effective antagonist, guiachrysine, had an IC50 around 0.43 µM in the presence of 0.5 mM carbamylcholine, compared to 0.16 µM for d-tubocurarine, the most potent curarizing alkaloid. Guiaflavine and 5',6'-dehydroguiaflavine were slightly less effective. Monoindole compounds were 10 to 100 times less potent than bisindole alkaloids.
Tincture: check with your herbalist or homeopath
May be extremely poisonous!
Foldes, F.F. "Anesthesia before and after curare", Anasthesieabteilung des Albert-Einstein-College of Medicine.
Anaesthesiol Reanim, 1993, 18(5):128-31. (retrieved June 20 2005) James, Mel. "Harold Griffith",Heirloom Series, Volume 6. (retrieved June 20 2005)
"Curare", Blue Planet Biomes, 2000. (retrieved September 27 2005)
Bisindole alkaloids from Strychnos guianensis are effective antagonists of nicotinic acetylcholine receptors in cultured human TE671 cells.
Wins P, Margineanu I, Penelle J, Angenot L, Grisar T, Bettendorff L.
Center for Cellular and Molecular Neurobiology, University of Liege, place Delcour, 17, 4020 Liege, Belgium
Quaternary indole alkaloids from the stem bark of Strychnos guianensis.
Penelle J, Tits M, Christen P, Molgo J, Brandt V, Frederich M, Angenot L.
Universite de Liege, Institut de Pharmacie, CHU, Belgium. firstname.lastname@example.org
The above presentation is for informational and educational purposes only.
It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage.
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