The International Journal of Neuropsychopharmacology
March 29, 2015
Joan Francesc Alonso, Sergio Romero, Miguel Ángel Mañanas et al.
105 citations
BACKGROUND: Psychedelics induce intense modifications in the sensorium, the sense of "self," and the experience of reality. Despite advances in our understanding of the molecular and cellular level mechanisms of these drugs, knowledge of their actions on global brain dynamics is still incomplete. Recent imaging studies have found changes in functional coupling between frontal and parietal brain...
Brazilian Journal of Psychiatry
March 1, 2015
Flávia de Lima Osório, Rafael Faria Sanches, Ligia Ribeiro Horta de Macedo et al.
486 citations
These results suggest that AYA has fast-acting anxiolytic and antidepressant effects in patients with a depressive disorder.
Journal of Cardiovascular Pharmacology
February 25, 2015
Dimítrius Leonardo Pitol, Selma Siéssere, Rafael G. Dos Santos et al.
13 citations
Ayahuasca is a hallucinogenic brew traditionally used by Northwestern Amazonian indigenous groups for therapeutic purposes. It is prepared by the decoction of Banisteriopsis caapi with the leaves of Psychotria viridis. Banisteriopsis caapi contains β-carbolines that are inhibitors of monoamine oxidase and P. viris is rich in dimethyltryptamine, a 5-HT(1A/2A/2C) agonist. Acute ayahuasca...
European Neuropsychopharmacology
January 16, 2015
José Carlos Bouso, Fernanda Palhano-Fontes, Antoni Rodrı́guez-fornells et al.
221 citations
Psychedelic agents have a long history of use by humans for their capacity to induce profound modifications in perception, emotion and cognitive processes. Despite increasing knowledge of the neural mechanisms involved in the acute effects of these drugs, the impact of sustained psychedelic use on the human brain remains largely unknown. Molecular pharmacology studies have shown that...
Current Topics in Behavioral Neurosciences
2015
Dennis J. Mckenna, Jordi Riba
31 citations
New World indigenous peoples are noted for their sophisticated use of psychedelic plants in shamanic and ethnomedical practices. The use of psychedelic plant preparations among New World tribes is far more prevalent than in the Old World. Yet, although these preparations are botanically diverse, almost all are chemically similar in that their active principles are tryptamine derivatives, either...
Drug Testing and Analysis
July 28, 2014
Jordi Riba, Ethan H. Mcilhenny, José Carlos Bouso et al.
96 citations
N , N ‐dimethyltryptamine (DMT) is a widely distributed plant alkaloid that displays partial agonist activity at the 5‐HT 2A receptor and induces intense psychedelic effects in humans when administered parenterally. However, self‐administration studies have reported a total lack of activity following oral intake. This is thought to be due to extensive degradation by monoamine oxidase (MAO)....
Psychopharmacology
June 20, 2013
José Carlos Bouso, Josep María Fábregas, Rosa María Antonijoan et al.
96 citations
BackgroundAyahuasca, a South American psychotropic plant tea containing the psychedelic 5-HT2A receptor agonist N,N-dimethyltryptamine, has been shown to increase regional cerebral blood flow in prefrontal brain regions after acute administration to humans. Despite interactions at this level, neuropsychological studies have not found cognitive deficits in abstinent long-term...
PLoS One
August 8, 2012
José Carlos Bouso, Débora González, Sabela Fondevila et al.
313 citations
Ayahuasca is an Amazonian psychoactive plant beverage containing the serotonergic 5-HT(2A) agonist N,N-dimethyltryptamine (DMT) and monoamine oxidase-inhibiting alkaloids (harmine, harmaline and tetrahydroharmine) that render it orally active. Ayahuasca ingestion is a central feature in several Brazilian syncretic churches that have expanded their activities to urban Brazil, Europe and North...
Journal of psychopharmacology (Oxford, England)
July 1, 2012
Fernando Caudevilla-Gálligo, Jordi Riba, Mireia Ventura et al.
99 citations
4-Bromo-2,5-dimethoxyphenethylamine (2C-B) is a psychoactive analogue of mescaline that is becoming increasingly popular as a rave and club drug. We investigated its presence in the illicit drug market in Spain, its pattern of use and profile of subjective effects. Drug material was analysed for 2C-B and information on pattern of use and subjective effects was obtained from recreational users....
Drug Testing and Analysis
April 19, 2012
Jordi Riba, Ethan H. Mcilhenny, Marta Valle et al.
91 citations
Ayahuasca is an Amazonian psychotropic plant tea obtained from Banisteriopsis caapi , which contains β ‐carboline alkaloids, chiefly harmine, harmaline and tetrahydroharmine. The tea usually incorporates the leaves of Psychotria viridis or Diplopterys cabrerana , which are rich in N , N ‐dimethyltryptamine (DMT), a psychedelic 5‐HT 2A/1A/2C agonist. The β ‐carbolines reversibly inhibit...
Biomedical chromatography : BMC
March 1, 2012
Ethan H. Mcilhenny, Jordi Riba, Manel J. Barbanoj et al.
57 citations
There is an increasing interest in potential medical applications of ayahuasca, a South American psychotropic plant tea with a long cultural history of indigenous medical and religious use. Clinical research into ayahuasca will require specific, sensitive and comprehensive methods for the characterization and quantitation of these compounds and their metabolites in blood. A combination of two...
Journal of Clinical Psychopharmacology
October 15, 2011
Rafael G. Dos Santos, Marta Valle, José Carlos Bouso et al.
136 citations
Ayahuasca is an Amazonian psychotropic plant tea combining the 5-HT2A agonist N,N-dimethyltryptamine (DMT) and monoamine oxidase-inhibiting β-carboline alkaloids that render DMT orally active. The tea, obtained from Banisteriopsis caapi and Psychotria viridis, has traditionally been used for religious, ritual, and medicinal purposes by the indigenous peoples of the region. More recently, the...
Biomedical chromatography : BMC
September 1, 2011
Ethan H. Mcilhenny, Jordi Riba, Manel J. Barbanoj et al.
51 citations
Ayahuasca, also known as caapi or yage among various South American groups, holds a highly esteemed and millennia-old position in these cultures' medical and religious pharmacopeia. There is now an increasing interest in the potential for modern medical applications of ayahuasca, as well as concerns regarding its increasing potential for abuse. Toxicological and clinical research to address...
Psychopharmacology
August 12, 2011
Rafael G. Dos Santos, Eva Grasa, Marta Valle et al.
139 citations
RationaleAyahuasca is an Amazonian tea containing the natural psychedelic 5-HT(2A/2C/1A) agonist N,N-dimethyltryptamine (DMT). It is used in ceremonial contexts for its visionary properties. The human pharmacology of ayahuasca has been well characterized following its administration in single doses.ObjectivesTo evaluate the human pharmacology of ayahuasca in repeated doses and assess the...
Drug and Alcohol Dependence
June 17, 2010
Josep María Fábregas, Débora González, Sabela Fondevila et al.
228 citations
Ayahuasca is a psychoactive beverage used for magico-religious purposes in the Amazon. Recently, Brazilian syncretic churches have helped spread the ritual use of ayahuasca abroad. This trend has raised concerns that regular use of this N,N-dimethyltryptamine-containing tea may lead to the medical and psychosocial problems typically associated with drugs of abuse. Here we assess potential drug...
Psychopharmacology
November 20, 2007
Manel J. Barbanoj, Jordi Riba, S. Clos et al.
74 citations
ObjectivesAyahuasca is a traditional South American psychoactive beverage and the central sacrament of Brazilian-based religious groups, with followers in Europe and the United States. The tea contains the psychedelic indole N,N-dimethyltryptamine (DMT) and beta-carboline alkaloids with monoamine oxidase-inhibiting properties that render DMT orally active. DMT interacts with serotonergic...
Drug and Alcohol Dependence
November 8, 2006
Débora González, Jordi Riba, José Carlos Bouso et al.
163 citations
Salvia divinorum is a member of the Lamiaceae family and contains the psychotropic diterpene and kappa-opioid receptor agonist salvinorin-A. Originally a shamanic inebriant used by the Mexican Mazatec Indians, the plant and its preparations are becoming increasingly popular among non-traditional users. Demographic data and information on pattern of use and subjective effects were obtained by...
Psychopharmacology
March 30, 2006
Jordi Riba, Sergio Romero, Eva Grasa et al.
245 citations
RationaleAyahuasca is a South American psychoactive plant tea which contains the serotonergic psychedelic N,N-dimethyltryptamine (DMT) and monoamine-oxidase inhibitors that render DMT orally active. Previous investigations with ayahuasca have highlighted a psychotropic effect profile characterized by enhanced introspective attention, with individuals reporting altered somatic perceptions and...
Journal of Psychoactive Drugs
June 1, 2005
Jordi Riba, Manel J. Barbanoj
58 citations
Since the winter of 1999, the authors and their research team have been conducting clinical studies involving the administration of ayahuasca to healthy volunteers. The rationale for conducting this kind of research is twofold. First, the growing interest of many individuals for traditional indigenous practices involving the ingestion of natural psychotropic drugs such as ayahuasca demands the...
Neuropsychobiology
2004
Jordi Riba, P. Anderer, F Jané et al.
131 citations
<i>Ayahuasca,</i> a South American psychotropic plant tea obtained from <i>Banisteriopsis caapi</i> and <i>Psychotria viridis</i>, combines monoamine oxidase-inhibiting β-carboline alkaloids with N,N-dimethyltryptamine (DMT), a psychedelic agent showing 5-HT<sub>2A</sub> agonist activity. In a clinical research setting, <i>ayahuasca</i> has demonstrated a combined stimulatory and psychedelic...
Journal of Pharmacology and Experimental Therapeutics
June 18, 2003
Jordi Riba, Marta Valle, Gloria Urbano et al.
383 citations
The effects of the South American psychotropic beverage ayahuasca on subjective and cardiovascular variables and urine monoamine metabolite excretion were evaluated, together with the drug's pharmacokinetic profile, in a double-blind placebo-controlled clinical trial. This pharmacologically complex tea, commonly obtained from Banisteriopsis caapi and Psychotria viridis, combines...
Psychopharmacology
December 1, 2002
Jordi Riba, Antoni Rodrı́guez-fornells, Manel J. Barbanoj
71 citations
RationaleAyahuasca, a South American psychotropic plant tea, combines the psychedelic agent and 5-HT(2A/2C) agonist N, N-dimethyltryptamine (DMT) with beta-carboline alkaloids showing monoamine oxidase-inhibiting properties. Current human research with psychedelics and entactogens has explored the possibility that drugs displaying agonist activity at the 5-HT(2A/2C) sites temporally disrupt...
Journal of Chromatography B
October 11, 2002
Mercedes Yritia, Jordi Riba, Jordi Ortuño et al.
84 citations
Ayahuasca is a South American psychotropic beverage prepared from plants native to the Amazon River Basin. It combines the hallucinogenic agent and 5-HT(2A/2C) agonist N,N-dimethyltryptamine (DMT) with beta-carboline alkaloids showing monoamine oxidase-inhibiting properties. In the present paper, an analytical methodology for the plasma quantification of the four main alkaloids present in...
British Journal of Clinical Pharmacology
June 1, 2002
Jordi Riba, P. Anderer, Adelaida Morte et al.
126 citations
Aims Ayahuasca is a traditional South American psychoactive beverage used in Amazonian shamanism, and in the religious ceremonies of Brazilian‐based syncretic religious groups with followers in the US and several European countries. This tea contains measurable amounts of the psychotropic indole N , N ‐dimethyltryptamine (DMT), and β‐carboline alkaloids with MAO‐inhibiting properties. In a...
Psychopharmacology
February 22, 2001
Jordi Riba, Antoni Rodrı́guez-fornells, Gloria Urbano et al.
302 citations
RationaleAyahuasca is a South American psychoactive beverage that contains the naturally occurring psychedelic agent N,N-dimethyltryptamine (DMT). This "tea" has been used for centuries in religious and medicinal contexts in the rain forest areas of South America and is presently gaining the attention of psychedelic users in North America and Europe.ObjectivesIn the present study, the...