Clinical Trials Logo

Clinical Trial Summary

Introduction: Many interventions such as hypnosis, mindfulness meditation, conditioned pain modulation and placebos have been shown to effectively reduce pain both in the laboratory and in clinical settings. However, little is known about their neurophysiological mechanisms of action. Analgesia induced by these techniques is thought to be based on opioidergic and non-opioidergic mechanisms (potentially endocannabinoid mechanisms). Objective: Our main objective is to evaluate the effect of hypnosis, meditation, conditioned pain modulation and placebo on blood concentrations of endocannabinoids (anandamide, 2-arachidonylglycerol, N-palmitoyl-ethanolamine, N-oleoylethanolamide), endogenous opioids (β-endorphins, met / leu-enkephalins, and dynorphins) and norepinephrine in healthy adults. Methods: This study is based on a single-group pre-experimental research design in which two experimental sessions including hypnosis or meditation, conditioned pain modulation and placebo interventions will be completed by all participants. In order to have a better description of the sociodemographic and clinical characteristics of the sample, information will be collected by questionnaires or tests filled by participants at baseline, including: age, sex, language, culture, religion, salary, menstrual cycle of women, medication (if any), mood, anxiety, pain catastrophizing, mindfulness, hypnotic susceptibility, and DNA information. Outcome measures will be collected before, during and after each intervention. The primary outcome is plasma concentrations of endocannabinoids. Secondary measurements include plasma concentrations of endogenous opioids and norepinephrine; change in pain intensity during the thermal noxious stimuli; and autonomic nervous system variability (as measured by heart rate variability). Anticipated results: The investigators expect a positive relationship between the change in pain intensity (analgesia) induced by the interventions (hypnosis, meditation, conditioned pain modulation, and placebo) and the change (increase) in plasma concentrations of endocannabinoids, opioids, and norepinephrine in healthy adults. It is also believed that the interventions will influence heart rate variability. Moreover, it is expected that there will be a relationship between the efficiency of the analgesic intervention and some gene polymorphisms associated to pain modulation and endocannabinoids, opioids or norepinephrine in healthy individuals.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT03407937
Study type Interventional
Source Université de Sherbrooke
Contact
Status Completed
Phase N/A
Start date November 14, 2017
Completion date September 1, 2018

See also
  Status Clinical Trial Phase
Not yet recruiting NCT05534230 - Dexmedetomidine for Pain Reduction in CABG N/A
Recruiting NCT06275698 - HONEY for the Treatment of POst-Tonsillectomy Pain N/A
Recruiting NCT04436224 - Hydromorphone for ICU-analgesia in Patients With Non-mechanical Ventilation Phase 4
Not yet recruiting NCT04548323 - Hypoalgesic Effects of Walking and Running Imagined
Completed NCT06054945 - Clinical Impact of IPACK Block Addition to Suprainguinal Fascia Iliaca Block
Completed NCT04394481 - Extension of Analgesia by Combined Injection of Dexamethasone and Dexmedetomidine After Arthroscopic Shoulder Surgery Phase 4
Completed NCT04690647 - The Efficacy of Suprainguinal Fascia Iliaca Compartment Block for Analgesia After Elective Total Hip Replacement. N/A
Completed NCT05034601 - ESPB vs TPVB for Postoperative Analgesia After the Nuss Procedure N/A
Completed NCT03740815 - Feasibility of Serratus Plane Block Associated With Sedation in Axillary Dissection N/A
Recruiting NCT05454202 - Assessment of the Interest of ANI in the Non-communicating Patient in Palliative Care
Recruiting NCT04554186 - Serratus Anterior Plane Block Versus Thoracic Paravertebral Block. N/A
Not yet recruiting NCT06393777 - Effectiveness of Pre-administered Natural Sweet-tasting Solution (Honey) for Decreasing Pain of Needle Insertion N/A
Suspended NCT04860635 - Safety of F14 Following Total Knee Replacement Phase 2/Phase 3
Not yet recruiting NCT04519463 - The Effect of Local Anesthesia With Lidocaine During Insertion and Removal of Nasal Packing Early Phase 1
Completed NCT02916342 - Interscalene Block Versus Combined Supraprascapular: Axillary Nerve Blocks Phase 4
Not yet recruiting NCT02549118 - Tenoxicam for Intrapartum Analgesia Phase 2
Completed NCT03206554 - Local Infiltration Analgesia in Total Knee Arthroplasty Phase 2
Not yet recruiting NCT02190760 - Comparison Between Perineural and Systemic Effect of Dexamethasone for Interscalene Brachial Plexus Block. N/A
Completed NCT01789606 - Self-Selection and Actual Use Trial of Ibuprofen 600 mg Immediate Release/Extended Caplet Phase 3
Completed NCT01299584 - ULTIVA Post Marketing Surveillance N/A