Phencyclidine: The Dawn Of A New Age Essays -- essays research papers

Phencyclidine: The Dawn of a New Age April, 1956 : The pharmaceutical company Parke & Davis first synthesize what they believe to be the perfect anesthetic (Souza, 1995). When administered to patients, it causes a completely dissociative state, with no significant respiratory or cardiovascular depression. Patients appear to be awake, eyes open, breathing normally.but are unaware of their surroundings or the procedures being performed upon them (Souza, 1995). Indeed, this is the perfect drug. Unfortunately, like all good things, this one has a darker side. 15% of patients awake from their slumber with what appeared to be an acute case of paranoid schizophrenia (Peterson; Stillman, 1978). The drug is PCP, and to this day it is the scourge of the underground drug community, and the focal point of intense scientific research. Parke Davis and Company did not know how terrible, and wonderful, a discovery they made that day; but our world has been changed forever because of it.quite possibly for the better. The Dust of Angels Phencyclidine, more commonly known as PCP, is a polycyclic compound belonging to the arylcyclohexylamine class of chemicals [figure 1.0] (Souza 1993). In pure form, it is a white powder which readily dissolves in water. The cyclohexamines are known for their the potent neurological effects, with PCP being the most potent. Almost every variation has been administered to, or abused by, humans at some time (Nintey Fifth Congress, 1978). All these compounds have similar pharmacological effects, which vary considerably according to the amount administered. Small doses produce a `drunken' state, in which subjects report a numbness in the extremities, while some species (like dogs and cats) become quite excited (Halberstadt, 1995). Intermediate doses have anesthetic and analgesic effects , with the psychic state resembling sensory isolation with one important exception: the sensory impulses (when tested electrophysiologically) reach the neocortex but "the neuronal signals are grossly distorted" (Halberstadt, 1995). Large doses, especially of PCP, may produce convulsions. Any dose produces cataleptoid muscle effects (Halberstadt, 1995). All the chemicals in this class produce a range a physiological effects, including tachydardia and hypertension (Halberstadt, 1995). Unlike the other cyclohexamines, however, PCP causes severe "e... ...phy - dont forget this! Carroll, Marilyn. (1992). Encyclopedia of Psychoactive Drugs. New York, N.Y: Chelsea House Publishers. Halberstadt, A.L. (1995). The phencyclidine-glutamate model of schizophrenia. Clinical Neuropharmacology. (Vol. 18) 237-249. Nintey Fifth Congress. (1978). Abuse of dangerous and illicit drugs - psychotropics, phencyclidine (PCP), and talwin; Hearings before the select committee on narcotics abuse and control house of representatives. Washington, DC: US Government Printing Office. Okuyama, Shigeru. (1994). NE-100, a novel sigma receptor ligand: Effect on phencyclidine-induced behaviors in rats, dogs, and monkeys. Life Sciences. (Vol. 55) PL133-138 Peterson, R.C, & Stillman, R.C. (1978). PCP-Phencylidine Abuse: An appraisal. New York, NY: National Institute on Drug Abuse. Restak, R.M. (1994). Receptors. New York, N.Y: Bantam Books. Souza, Errol B., & Clouet, D., & London, E.D. (1993). Sigma, PCP, and NMDA Receptors. New York, NY: National Institute on Drug Abuse. Svensson, T.H. (1995). Mode of action of atypical neuroleptics in relation to the phencyclidine model of schizophrenia. Journal of Clinical Psychopharmacology. (Vol. 15) 11S-18S