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Acute Effects of Lysergic Acid Diethylamide in Healthy Subjects.

Abstract：

BACKGROUND:After no research in humans for >40 years, there is renewed interest in using lysergic acid diethylamide (LSD) in clinical psychiatric research and practice. There are no modern studies on the subjective and autonomic effects of LSD, and its endocrine effects are unknown. In animals, LSD disrupts prepulse inhibition (PPI) of the acoustic startle response, and patients with schizophrenia exhibit similar impairments in PPI. However, no data are available on the effects of LSD on PPI in humans. METHODS:In a double-blind, randomized, placebo-controlled, crossover study, LSD (200 μg) and placebo were administered to 16 healthy subjects (8 women, 8 men). Outcome measures included psychometric scales; investigator ratings; PPI of the acoustic startle response; and autonomic, endocrine, and adverse effects. RESULTS:Administration of LSD to healthy subjects produced pronounced alterations in waking consciousness that lasted 12 hours. The predominant effects induced by LSD included visual hallucinations, audiovisual synesthesia, and positively experienced derealization and depersonalization phenomena. Subjective well-being, happiness, closeness to others, openness, and trust were increased by LSD. Compared with placebo, LSD decreased PPI. LSD significantly increased blood pressure, heart rate, body temperature, pupil size, plasma cortisol, prolactin, oxytocin, and epinephrine. Adverse effects produced by LSD completely subsided within 72 hours. No severe acute adverse effects were observed. CONCLUSIONS:In addition to marked hallucinogenic effects, LSD exerts methylenedioxymethamphetamine-like empathogenic mood effects that may be useful in psychotherapy. LSD altered sensorimotor gating in a human model of psychosis, supporting the use of LSD in translational psychiatric research. In a controlled clinical setting, LSD can be used safely, but it produces significant sympathomimetic stimulation.

journal_name

Biol Psychiatry

journal_title

Biological psychiatry

authors

Schmid Y,Enzler F,Gasser P,Grouzmann E,Preller KH,Vollenweider FX,Brenneisen R,Müller F,Borgwardt S,Liechti ME

doi

10.1016/j.biopsych.2014.11.015

subject

Has Abstract

pub_date

2015-10-15 00:00:00

pages

544-53

issue

8

eissn

0006-3223

issn

1873-2402

pii

S0006-3223(14)00909-3

journal_volume

78

pub_type

杂志文章,随机对照试验

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