Modulating Socially Adaptive Mirror System Functioning in Autism by Oxytocin

NCT ID: NCT03640156

Last Updated: 2020-02-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

25 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-07-26

Study Completion Date

2019-12-19

Brief Summary

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This study investigates the efficacy of a single-dose of exogenous oxytocin administration on socially adaptive mirror-motor mapping in participants with Autism Spectrum Disorders. A placebo-controlled cross-over trial will be conducted: each participant will receive both a single-dose of placebo and oxytocin in two sessions separated by one week. The order of nasal spray will be randomised across participants. Mirror-motor mapping will be assessed by transcranial magnetic stimulation (TMS), a standard technique to investigate mirror system activity.

Detailed Description

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The brain's action observation network or 'mirror system' supports a variety of socio-cognitive functions, as it enables us to internally simulate and understand others' actions, emotions and intentions. Generally, mirror responses are larger upon the observation of actions accompanied by relevant information for the observer, such as direct eye contact from the actor. In other words, 'mirroring' is adaptively modulated according to the social salience of the observed actions (i.e. it is socially adaptive).

Individuals with Autism Spectrum Disorders (ASD) are known to endure difficulties with correctly recognizing eye contact as a communicative cue. Instead, they tend to experience eye contact as stressful and arousing. It is therefore hypothesized that, upon the observation of actions combined with salient gaze cues from the actor, these mirroring processes will not be adaptively modulated in participants with ASD.

As appropriate processing of eye contact is a key aspect of (non-verbal) communicative behavior, the investigator will investigate the efficacy of a single dose of intranasal oxytocin administration for enhancing socially-adaptive mirroring in ASD. Oxytocin is a neuropeptide that acts as a regulator social brain areas. On a behavioral level, it is known to enhance the saliency of observed social cues and to improve prosocial behavior. As such, it is regarded a promising intervention for alleviating the social and communicative deficits in ASD.

Conditions

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Autism Spectrum Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Oxytocin (OXT) spray

Syntocinon nasal spray (product code RVG 03716) will be used to intranasally administer one single dose (24 IU) of OXT (3 puffs of 4 IU per nostril).

Group Type EXPERIMENTAL

Oxytocin

Intervention Type DRUG

A single dose (24IU) of nasal spray (3 puffs of 4IU per nostril) will be administered before the assessment of the neurophysiological measures.

Placebo (PL) spray

Physiological water (a solution of sodium chloride (NaCl) in water) will be used to intranasally administer one single dose (24 IU) of PL (3 puffs of 4 IU per nostril).

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type OTHER

A single dose (24IU) of nasal spray (3 puffs of 4IU per nostril) will be administered before the assessment of the neurophysiological measures.

Interventions

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Oxytocin

A single dose (24IU) of nasal spray (3 puffs of 4IU per nostril) will be administered before the assessment of the neurophysiological measures.

Intervention Type DRUG

Placebo

A single dose (24IU) of nasal spray (3 puffs of 4IU per nostril) will be administered before the assessment of the neurophysiological measures.

Intervention Type OTHER

Other Intervention Names

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Syntocinon (product code RVG 03716)

Eligibility Criteria

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Inclusion Criteria

* Male
* Young adults (between 18 - 35 y/o)
* Right-handed
* Official diagnosis of Autism Spectrum Disorders (for ASD participants)

Exclusion Criteria

* Female
* Left-handed
* Any neuro(psycho)logical / psychiatric illness (for healthy controls)
* Motor dysfunctions of the hands / arms
* Any contradiction to TMS research as assessed with the TMS screening list: no metal objects in the body (e.g. pacemaker, coronary bypass clips, implants, medication pumps, ...), history of brain trauma in the past (e.g. meningitis, epilepsy, surgery, ...) or history of drug and/or alcohol abuse.
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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KU Leuven

OTHER

Sponsor Role lead

Responsible Party

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Kaat Alaerts

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Kaat Alaerts

Role: PRINCIPAL_INVESTIGATOR

KU Leuven

Locations

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Katholieke Universiteit Leuven

Leuven, , Belgium

Site Status

Countries

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Belgium

References

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Prinsen J, Bernaerts S, Wang Y, de Beukelaar TT, Cuypers K, Swinnen SP, Alaerts K. Direct eye contact enhances mirroring of others' movements: A transcranial magnetic stimulation study. Neuropsychologia. 2017 Jan 27;95:111-118. doi: 10.1016/j.neuropsychologia.2016.12.011. Epub 2016 Dec 8.

Reference Type BACKGROUND
PMID: 27939365 (View on PubMed)

Prinsen J, Brams S, Alaerts K. To mirror or not to mirror upon mutual gaze, oxytocin can pave the way: A cross-over randomized placebo-controlled trial. Psychoneuroendocrinology. 2018 Apr;90:148-156. doi: 10.1016/j.psyneuen.2018.02.016. Epub 2018 Feb 22.

Reference Type BACKGROUND
PMID: 29494953 (View on PubMed)

Related Links

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Other Identifiers

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S56327c

Identifier Type: -

Identifier Source: org_study_id

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