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Addiction: all studies

Page 698 of 857: studies 6,971 to 6,980 of 8,563, newest first. Back to the addiction overview

Research

Effects of hallucinogenic agents mescaline and phencyclidine on zebrafish behavior and physiology

Progress in Neuro-Psychopharmacology and Biological Psychiatry January 10, 2012 Evan J. Kyzar, Christopher Collins, Siddharth Gaikwad et al. 122 citations

Mescaline and phencyclidine (PCP) are potent hallucinogenic agents affecting human and animal behavior. As their psychotropic effects remain poorly understood, further research is necessary to characterize phenotypes they evoke in various animal models. Zebrafish (Danio rerio) are rapidly emerging as a new model organism for neuroscience research. Here, we examine the effects of mescaline...

Hidden Dimensions: The Unification of Physics and Consciousness (review)

Buddhist-Christian Studies 2012 Benjamin J. Chicka

Reviewed by: Hidden Dimensions: The Unification of Physics and Consciousness Benjamin J. Chicka Hidden Dimensions: The Unification of Physics and Consciousness. By B. Alan Wallace. New York: Columbia University Press, 2007. xi + 158 pp. The project of B. Alan Wallace will be clear by now to those who have been following his career. He seeks the unification of a Buddhist understanding of...

CB1 - cannabinoid receptor antagonist effects on cortisol in cannabis-dependent men.

The American Journal of Drug and Alcohol Abuse January 2012 Robert S. Goodwin, Michael H Baumann, David A. Gorelick et al.

The endocannabinoid system modulates the hypothalamic-pituitary-adrenal (HPA) axis, but the effect of cannabinoid type 1 (CB1) receptor antagonism following chronic CB1 receptor stimulation in humans is unknown. To evaluate effects of the CB1 receptor antagonist rimonabant on the HPA axis in cannabis-dependent individuals. Fourteen daily cannabis smokers received increasingly frequent 20 mg...

Neurocognitive correlates of the effects of yoga meditation practice on emotion and cognition: a pilot study.

Frontiers in Integrative Neuroscience 2012 Brett Froeliger, Eric L Garland, Leslie A Modlin et al.

Mindfulness meditation involves attending to emotions without cognitive fixation of emotional experience. Over time, this practice is held to promote alterations in trait affectivity and attentional control with resultant effects on well-being and cognition. However, relatively little is known regarding the neural substrates of meditation effects on emotion and cognition. The present study...

NAAG, NMDA receptor and psychosis.

Current Medicinal Chemistry 2012 Richard Bergeron, Joseph T Coyle

At central synapses, glutamate is the main excitatory neurotransmitter. Once released from presynaptic terminals, glutamate activates a number of different glutamatergic receptors one of which is the ligand gated ionophore glutamatergic subtype N-methyl-D-aspartate receptors (NMDARs). NMDARs play a crucial role in controlling various determinants of synaptic function. N-acetylaspartylglutamate...

JWH-018 and JWH-073: Δ⁹-tetrahydrocannabinol-like discriminative stimulus effects in monkeys.

Journal of Pharmacology and Experimental Therapeutics January 2012 Brett C Ginsburg, David R Schulze, Lenka Hruba et al.

Products containing naphthalen-1-yl-(1-pentylindol-3-yl) methanone (JWH-018) and naphthalen-1-yl-(1-butylindol-3-yl) methanone (JWH-073) are emerging drugs of abuse. Here, the behavioral effects of JWH-018 and JWH-073 were examined in one behavioral assay selective for cannabinoid agonism, rhesus monkeys (n = 4) discriminating Δ⁹-tetrahydrocannabinol (Δ⁹-THC; 0.1 mg/kg i.v.), and another assay...

Effects of psychoactive substances in schizophrenia -- findings of structural and functional neuroimaging.

Current Topics in Medicinal Chemistry 2012 M Walter, Niklaus Denier, M Vogel et al.

Schizophrenia is a major mental illness that is characterized by psychosis, social withdrawal, and cognitive impairment. High comorbidity rates with substance use disorders have consistently been found - especially with abuse of cannabis and psychostimulants. While the role of these drugs in the onset of psychosis and schizophrenia has received much attention, relatively few studies have been...

Identification and characterization of diterpene synthases in the salvinorin A biosynthetic pathway

Libraries and Cultural Resources 2012 Rod Mitchell

Salvia divinorum is a hallucinogenic plant that is used for divination and spiritual communion by the Mazatecs of Mexico. The active component of the plant is salvinorin A, a neoclerodane diterpenoid that selectively acts as a potent κ opioid receptor agonist. Salvinorin A's novel receptor binding profile makes derivatives of the compound potentially useful in the treatment of various...

The effects of ecstasy (MDMA) on brain serotonin transporters are dependent on age-of-first exposure in recreational users and animals.

PLoS One 2012 Anne Klomp, Bjørnar den Hollander, Kora de Bruin et al.

Little is known on the effects of ecstasy (MDMA, a potent 5-HT-releaser and neurotoxin) exposure on brain development in teenagers. The objective of this study was to investigate whether in humans, like previous observations made in animals, the effects of MDMA on the 5-HT system are dependent on age-of-first exposure. 5-HT transporter (SERT) densities in the frontal cortex and midbrain were...

Influence of brain-derived neurotrophic factor and catechol O-methyl transferase polymorphisms on effects of meditation on plasma catecholamines and stress.

Stress January 2012 Ye-Ha Jung, Do‐hyung Kang, Min Soo Byun et al.

Meditation may show differential effects on stress and plasma catecholamines based on genetic polymorphisms in brain-derived neurotrophic factor (BDNF) and catechol O-methyl transferase (COMT). Eighty adults (40 men, 40 women; mean age 26 years) who practiced meditation regularly and 57 healthy control adults (35 men, 22 women; mean age 26 years) participated. Plasma catecholamines...