Chemistry of Psilocybin and Synaptic Transmitters Involved

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Chemistry of Psilocybin and Synaptic Transmitters Involved

Psilocybin is a type of hallucinogenic mushroom that is

ingested by eating the raw fungi. The mushroom can also be made

into a tea and drunk. In some of the later studies done on

psilocybin, the drug was synthetically produced and then either

inhaled or injected by an IV. The drug enters the blood stream

and can cross the blood brain barrier because of it relative

metabolic similarity to serotonin (Fuller 1985). This means that

since psilocybin is chemical resemblance to the neurotransmitter

serotonin, psilocybin can trick the protein channels embedded in

the membrane of the blood vessel and pass through as if it were

serotonin and not a drug. Psilocybin (4phosphodimethyltryptamine

or N, N dimethyltryptamine (DMT)) is a naturally occurring

indoleamine hallucinogen and is metabolized to psilocin after

ingestion (Umbricht, Koller, Vollenweider, Schmid, 2001).

Psilocin is the active chemical in the plant and it is what

causes hallucinations and other behavioral changes in the

individual taking the substance. It is stated that psilocybin is

used in research because it is short-acting, naturally occurring

and draws less attention then other well-know hallucinogens

(Strassman 1996). There are not many studies done with human

subjects so the majority of data has been collected with animals

(rats in particular). In many articles the effects, both

neurological and behavioral are likened to the effects of the

hallucinogen LSD.

The hallucinogen psilocybin is considered to be a monoamine

related substance that is mediated by the effects of activity by

serotonergic systems in the central nervous system (Grilly

1998). When talking about the serotonergic systems that are

affected by the drug Psilocybin the research is focusing on the

central systems and not the periphery nerve networks. The drug

is considered to be part of the indolealkylamine group and is

classified in the chemical class of tryptamines. A number of

indolealkylamines that are hallucinogenic can be divided into

three basic groups, tryptamine derivatives, beta-carbolines, and

lysergic acid derivatives (Glennon 1985, Nichols and Glennon

1984). Psilocybin is tryptamine derived. The indole nucleus of

serotonin is commonly found in the chemical class of tryptamines

(Abraham, Aldridge, Gogia 1996). Psilocybin in one of the best

studied tryptamine derivatives and is related to other

indolealkylamines that are derived from various plants (Nichols

and Glennon 1996).

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