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Phencyclidine, a high-affinity ligand of PCP site 2. PCP site 2 is a binding site that was identified as a high- affinity target for phencyclidine (PCP), an anesthetic and dissociative hallucinogen that acts primarily as an NMDA receptor antagonist . [ 1 ]
PCP itself is composed of three six-membered rings, which can each be substituted by a variety of groups. These are traditionally numbered in the older research as first the cyclohexyl ring, then the phenyl , and finally the piperidine ring, with the different rings represented by prime notation (') next to the number.
Phencyclidine or phenylcyclohexyl piperidine (PCP), also known in its use as a street drug as angel dust among other names, is a dissociative anesthetic mainly used recreationally for its significant mind-altering effects. [1] [4] PCP may cause hallucinations, distorted perceptions of sounds, and violent behavior.
Ketamine produces more similar symptoms (hallucinations, withdrawal) without observed permanent effects (other than ketamine tolerance). Both arylcyclohexamines have some(uM) affinity to D2 and as triple reuptake inhibitors. PCP is representative symptomatically, but does appear to cause brain structure changes seen in schizophrenia. [22]
Phencyclidine (also known as PCP or "Angel Dust") and ketamine, both of which block glutamate receptors, are known to cause psychosis at least somewhat resembling schizophrenia, further suggesting that psychosis and perhaps schizophrenia cannot fully be explained in terms of dopamine function, but may also involve other neurotransmitters. [57]
The high affinity of 3-HO-PCP for opioid receptors is unique among arylcyclohexylamines and is in contrast to PCP, which has only very low affinity for the MOR (K i = 11,000–26,000 nM; 282- to 433-fold difference) and the other opioid receptors (K i = 4,100 nM for the KOR and 73,000 nM for the DOR).
Phencyclidine, a hallucinogenic and dissociative recreational drug, also known as angel dust 3-HO-PCP, a designer drug related to phencyclidine; 3-MeO-PCP, a designer drug related to phencyclidine; 4-MeO-PCP, a research chemical related to phencyclidine; Pneumocystis pneumonia, a form of pneumonia caused by the yeast-like fungus Pneumocystis ...
It is the m-isothiocyanate derivative of phencyclidine (PCP) and binds irreversibly (forming a covalent bond) to the PCP binding site on the NMDA receptor complex. [1] However, later studies suggest the functionality of metaphit is mediated by sites not involved in PCP-induced passive avoidance deficit, and not related to the NMDA receptor ...