Psychopharmacology
February 2003
Randy L Smith, Robert J. Barrett, Elaine Sanders‐bush
The drug discrimination procedure has proven to be a valuable tool for studying the mechanism of action of psychoactive drugs. Recently, mice with targeted gene mutations have been developed that may also prove useful in evaluating the role of specific receptors in mediating the actions of drugs. We were interested in studying the effects of hallucinogens in genetically modified mice using the...
CNS Spectrums
February 1, 2003
Alan B Douglass
Does narcolepsy, a neurological disease, need to be considered when diagnosing major mental illness? Clinicians have reported cases of narcolepsy with prominent hypnagogic hallucinations that were mistakenly diagnosed as schizophrenia. In some bipolar disorder patients with narcolepsy, the HH resulted in their receiving a more severe diagnosis (ie, bipolar disorder with psychotic features or...
Cognitive Neuropsychiatry
2003
Konstantine K. Zakzanis, Donald A. Young, Zachariah Campbell
22 citations
Introduction: Quantitative evidence has begun to emerge where human studies suggest that repeated recreational use of +/- 3,4-methylenedioxy-methamphetamine (MDMA or "Ecstasy") produces lasting impairments in explicit memory. The purpose of this investigation was to further explore the nature and pattern of component memory processes in abstinent MDMA users. Methods: Accordingly, 15 MDMA users...
Pharmacology, Biochemistry, and Behavior
December 2002
Jerrold C Winter, Justin R Eckler, Mireille M Doat et al.
Previous reports from our laboratory have provided evidence that acute, i.e., concurrent, treatment with selective serotonin reuptake inhibitors (SSRIs) augments the stimulus effects of indoleamine and phenethylamine hallucinogens in the rat. In the present investigation, the acute effects of fluoxetine and citalopram on stimulus control induced by (-)-2,5-dimethoxy-4-methylamphetamine (DOM)...
Brain Research
November 22, 2002
Suzanne Colbron, Mark Jones, Stephany M Biello
3,4-Methylenedioxymethamphetamine (MDMA or 'Ecstasy') is a widely used recreational drug that damages serotonin 5-HT neurons in animals and possibly humans. Published literature has shown that the serotonergic system is involved in photic and non-photic phase shifting of the circadian clock, which is located in the suprachiasmatic nuclei. Despite the dense innervation of the circadian system by...
Brain
October 21, 2002
Andrew J. Larner
9 citations
NEUROCHEMISTRY OF CONSCIOUSNESS: NEUROTRANSMITTERS IN MIND Edited by E. Perry, H. Ashton and A. Young 2002. Amsterdam: John Benjamins Publishing Company Price €65. ISBN 1588111245 Of what relevance is the study of the neural correlates of consciousness to the practice of clinical neurology? Until recently, one answer to this question might reasonably have been ‘not much’, consciousness being...
Psychopharmacology
October 2002
Danuta Marona‐lewicka, Deborah Kurrasch‐orbaugh, Jennifer R Selken et al.
There is substantial evidence that lisuride can produce effects linked to 5-HT(1A) receptor occupancy. Nevertheless, this action has generally been ignored in the mechanism of action of lisuride, in favor of an exclusive role for dopamine receptors in considering its antiparkinsonian effects, or an exclusive role of 5-HT(2A/2C) receptor activation in hallucinogenesis. These conclusions are...
Proceedings of the National Academy of Sciences
September 3, 2002
Bryan L. Roth, Karen Baner, Richard B Westkaemper et al.
782 citations
Salvia divinorum, whose main active ingredient is the neoclerodane diterpene Salvinorin A, is a hallucinogenic plant in the mint family that has been used in traditional spiritual practices for its psychoactive properties by the Mazatecs of Oaxaca, Mexico. More recently, S. divinorum extracts and Salvinorin A have become more widely used in the U.S. as legal hallucinogens. We discovered that...
Journal of Medicinal Chemistry
September 1, 2002
David E. Nichols, Stewart Frescas, Danuta Marona‐lewicka et al.
89 citations
Lysergic acid amides were prepared from (R,R)-(-)-, (S,S)-(+)-, and cis-2,4-dimethyl azetidine. The dimethylazetidine moiety is considered here to be a rigid analogue of diethylamine, and thus, the target compounds are all conformationally constrained analogues of the potent hallucinogenic agent, N,N-diethyllysergamide, LSD-25. Pharmacological evaluation showed that...
Life Sciences
August 2, 2002
Justin R Eckler, Mireille M Doat, R A Rabin et al.
The present investigation examined the interaction between 2,5-dimethoxy-4-methylamphetamine [DOM] and the selective serotonin reuptake inhibitor [SSRI] citalopram in rats trained with DOM [0.6 mg/kg; 75 min pretreatment time] as a discriminative stimulus. Pretreatment with citalopram at a dose of 1.0 mg/kg shifted the DOM dose response relationship to the left. Unlike previously tested SSRI's,...