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Effects of N, N-Dimethyltryptamine on Rat Behaviors Relevant to Anxiety and Depression.

ACS chemical neuroscience
July 18, 2018
Lindsay P Cameron et al. (4 authors)
Journal ArticleResearch Support, N.I.H., ExtramuralResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, Non-P.H.S.Animal Study
Study Details

Study Goal

The researchers aimed to investigate the effects of N,N-Dimethyltryptamine (DMT) on anxiety and depression-related behaviors in rodents.

Results Summary

DMT initially increased anxiety-like responses but later reduced anxiety by facilitating fear memory extinction and decreased immobility in the forced swim test, indicating antidepressant and anxiolytic effects.

Population

Adult male Sprague-Dawley rats

Effective Dosage

Not specified

Duration

Not specified

Interactions

None mentioned

Extracted Claims (7)
InterventionDirectionEndpointPopulationDosageImpactClaim #
ketamine
increase
mood
treatment-resistant populations
-
have shown great promise due to their fast-acting nature and effectiveness
#1
the psychoactive tisane ayahuasca
increase
mood
treatment-resistant populations
-
have shown great promise due to their fast-acting nature and effectiveness
#2
N, N-dimethyltryptamine (DMT)
increase
anxiety
adult, male, Sprague-Dawley rats
-
elicits initial anxiogenic responses
#3
N, N-dimethyltryptamine (DMT)
decrease
anxiety
adult, male, Sprague-Dawley rats
-
long-lasting effects tend to reduce anxiety
#4
N, N-dimethyltryptamine (DMT)
increase
cued fear memory extinction
adult, male, Sprague-Dawley rats
-
facilitating the extinction of cued fear memory
#5
N, N-dimethyltryptamine (DMT)
decrease
immobility in the forced swim test
adult, male, Sprague-Dawley rats
-
reduces immobility
#6
N, N-dimethyltryptamine (DMT)
decrease
depression and anxiety
rodents
-
produces antidepressant and anxiolytic behavioral effects
#7
Abstract

Depression and anxiety disorders are debilitating diseases resulting in substantial economic costs to society. Traditional antidepressants often take weeks to months to positively affect mood and are ineffective for about 30% of the population. Alternatives, such as ketamine, a dissociative anesthetic capable of producing hallucinations, and the psychoactive tisane ayahuasca, have shown great promise due to their fast-acting nature and effectiveness in treatment-resistant populations. Here, we investigate the effects of N, N-dimethyltryptamine (DMT), the principle hallucinogenic component of ayahuasca, in rodent behavioral assays relevant to anxiety and depression using adult, male, Sprague-Dawley rats. We find that while DMT elicits initial anxiogenic responses in several of these paradigms, its long-lasting effects tend to reduce anxiety by facilitating the extinction of cued fear memory. Furthermore, DMT reduces immobility in the forced swim test, which is a characteristic behavioral response induced by many antidepressants. Our results demonstrate that DMT produces antidepressant and anxiolytic behavioral effects in rodents, warranting further investigation of ayahuasca and classical psychedelics as treatments for depression and post-traumatic stress disorder.

Medical Subject Headings (MeSH)
AnimalsAnti-Anxiety AgentsAntidepressive AgentsAnxiety DisordersConditioning, PsychologicalDepressive DisorderDisease Models, AnimalExploratory BehaviorFearFeeding BehaviorMaleMotor ActivityN,N-DimethyltryptamineRats, Inbred SHR
Study Links
Quality Scores
SafetyNot Assessed
Efficacy75/10
Quality70/10
Citation Metrics
Total Citations105
Citations/Year15.0
Relative Citation Ratio5.73
NIH Percentile94.4%
Research Impact Scores
APT Score0.50
Weight Score1.66
Normalized Score0.64
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Effects of N, N-Dimethyltryptamine on Rat Behaviors Relevant... | Panacea Index