AzTrials
AzTrials

PainEarly Phase 1NCT03419858

The Role of Opioidergic Systems in Breathing Based Analgesia

A Early Phase 1 study testing Mindfulness Meditation, Slow-Breathing and Naloxone in people with Pain, run by University of California, San Diego at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

The purpose of this psychophysical and pharmacologic study is to determine if slow-breathing induced pain relief is mediated by endogenous opioids in response to intravenous (IV) administration of the opioid antagonist naloxone during noxious heat stimulation. Read more about this study

Who is it for?
Ages 18 to 55 yearsHealthy volunteers can take part
Conditions the study is for
Pain
What is being tested?
Mindfulness Meditation, Slow-Breathing and Naloxone
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
60 participants
Where
1 siteUnited States
Study dates
13 Mar 2017to 27 Jun 2017
Phase
Early Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Normal volunteers with no history of chronic pain problems
  • Volunteers had no prior meditation experience
  • Volunteers could be male and non-pregnant females.
  • Volunteers of all ethnic backgrounds were included.

Who cannot join

  • Female volunteers could not be pregnant.
  • They could not be taking opioids or antidepressants.
  • Subjects with a repeated history of syncope, loss of consciousness, light headedness, nausea, dizziness, or vomiting in response to needles or blood could not participate in the study.
  • Subject could not be using exogenous opiates for the complete duration of the study.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Wake Forest University Health Sciences

    Winston-Salem, North Carolina, 27157

Other trials in United States

About this study

Official title: The Role of Endogenous Opioidergic Systems in Breathing Based Analgesia

The purpose of this psychophysical and pharmacologic study is to determine if slow-breathing induced pain relief is mediated by endogenous opioids in response to intravenous (IV) administration of the opioid antagonist naloxone during noxious heat stimulation. We were also interested in disentangling the endogenous analgesic mechanisms supporting mindfulness-based analgesia.

Read the detailed description

The proposed study will employ a graded analytical approach to compare mindfulness to placebo-meditation and a slow-breathing exercise in response to double-blind intravenous administration (IV) of naloxone/placebo-saline and noxious heat stimulation. The aim of this study is to determine if slow-breathing induced analgesia is associated with the release of endogenous opioids. The proposed study will disentangle the specific stage of cognitive and/or respiration-based involvement (if any) of opioidergically mediated pain relief, a critical step in identifying the specific analgesic mechanisms corresponding to mindfulness based cognitive techniques.

Conditions
Pain
Being tested
Mindfulness Meditation, Placebo Meditation, Slow-Breathing, Naloxone, Saline
Keywords
Pain, Slow-Breathing, Mindfulness, Opioids, Placebo
Medical subject headings
Pain, Hypoventilation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Mindfulness MeditationBehavioural

    Also called mental training

    A well-validated brief mindfulness-based mental training regimen [four sessions; 20 min/session] was used to teach patients to independently practice mindfulness meditation.

  • Placebo MeditationBehavioural

    Also called mental training

    A well-validated brief meditation-based mental training regimen [four sessions; 20 min/session] was used to teach patients to independently practice closing their eyes and take a deep breath every few minutes.

  • Slow-BreathingBehavioural

    Also called mental training

    Study volunteers practiced lowering their breathing rate, across four, 20 minute training sessions, in response to a fluctuating light with the guidance of a trained facilitator.

  • NaloxoneDrug

    A 0.15 mg/kg bolus dose of naloxone (Naloxone Hydrichloride, Amphastar Pharmaceuticals, Inc., Rancho Cucamonga, California) in 25ml normal saline was administered over 10 minutes. We also administered a supplementary IV infusion dose of 0.1mg/kg/hour naloxone immediately after bolus infusion ceased till the end of the experiment.

  • SalineOther

    A 0.15 mg/kg bolus dose of saline in 25ml normal saline was administered over 10 minutes. We also administered a supplementary IV infusion dose of 0.1mg/kg/hour saline immediately after bolus infusion ceased till the end of the experiment.

Study groups in NCT03419858
Study groupRoleWhat they receive
Mindfulness Meditation GroupExperimentalSubjects participated in four sessions (20 min/session) of mindfulness training. Participants were taught that perceived sensory events are "momentary" and "fleeting" and require no further evaluation. They were asked to close their eyes, relax and to focus on the flow of their breathing and "simply let go" of discursive thoughts.
Receives: Behavioral: Mindfulness Meditation; Drug: Naloxone; Other: Saline
Placebo Meditation GroupActive comparatorThe purpose of this intervention was to lead subjects to attend to one's breathing in a non-evaluative manner. Subjects were instructed to sit with a straight posture, closed eyes, and to take a deep, slow breaths every 2-3 minutes.
Receives: Behavioral: Placebo Meditation; Drug: Naloxone; Other: Saline
Slow-Breathing GroupActive comparatorA validated (Chalaye et al., 2009) slow breathing training regimen was employed, using fluctuating light, to teach individuals to independently lower their respective respiration rate. Subjects practiced lowering their respiration rates across four, 20 minute sessions.
Receives: Behavioral: Slow-Breathing; Drug: Naloxone; Other: Saline

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Visual Analog Scale Pain intensity and Unpleasantness ratings as a function of each respective cognitive manipulations and activation in response to naloxone and/or saline.

    The visual analog scale (VAS) measures pain ratings that are assessed in response to noxious (49°C) thermal stimuli applied to the back of the right calf muscle.

    Pain intensity and unpleasantness ratings will be assessed with a Visual Analog Scale. The minimum rating ("0") is designated as "no pain" whereas the maximum ("10") is labeled as "most intense imaginable" or "most unpleasant imaginable". Higher values corresponded to higher perceived pain ratings.

    Pain ratings were assessed at baseline (session 1) and again at sessions six and seven to determine the impact of the mental training regimens. At session six and seven, subjects were given an infusion of either naloxone or saline to address the potential contribution of the opioidergic system in the cognitive modulation of pain.

    Measured: Up to 3 weeks

Secondary outcomes (9)
  1. Respiration Rate Measures

    A respiratory transducer (TSD 201; Biopac Systems) was placed around the chest to measure the participant's rate of respiration.

    Measured: Up to 3 weeks

  2. State Anxiety Inventory

    This inventory is a 20 question test used to measure a subject's state of anxiety. A numeric value between 1 (Not at all) and 4 (Very Much So) is provided in response to each statement. The range of scores for this test is between 20 and 80, with higher scores reflecting higher estimates of anxiety.

    Measured: up to 3 weeks

  3. Pain Catastrophizing Scale (PCS)

    The PCS is a 13 item scale, with each item rated on a 5-point scale between: 0 (Not at all) and 4 (all the time). The PCS is broken into three subscales including: magnification, rumination, and helplessness. The total range of scores is between 0-52 with higher values reflecting more salient impacts of pain on one's day to day experience.

    Measured: up to 3 weeks

  4. Cohen Perceived Stress Scale (CPS)

    The CPS is a series of 10 temporally constrained (i.e. in the last month) questions meant to ascertain the relative frequency of stressors in one's life, ranging from never (scored as 0) to very often (scored as 4). All positively stated questions are reversed scored and then all items are summed to yield a final estimate of stress. The higher the score the higher the level of stress.

    Measured: up to 3 weeks

  5. Treatment Effectiveness Scale

    A VAS assessed the effectiveness of the study's intervention. Values on this scale vary continuously between 0 (not effective) and 10 (most effective imaginable). Higher values indicate a subject's greater confidence in the perceived treatment effectiveness.

    Measured: up to 3 weeks

  6. Attitude Toward Treatment Scale (ATTS)

    The ATTS was used to monitor a participant's impressions and attitudes about the interventions used in this study. It supplies 5 multiple-choice questions answered on a 10 point scale, ranging from 0 (not logical) to 9 (very logical). Higher scores reflect more positive subject impressions about the therapeutic interventions.

    Measured: up to 3 weeks

  7. Center for Epidemiological Studies Depression Scale (CES-D)

    This is a brief self-report questionnaire used to measure the severity of depressive symptoms. The CES-D is an inventory of 20 self-report items regarding depressive symptoms. Each question is graded on a 0 to 3 point scale with 0 representing "not at all" and 3 representing "a lot". Four questions (4,8,12, and 16) are reverse scored. A score of 15 or higher indicates a risk for depression.

    Measured: up to 3 weeks

  8. Stress-Level Visual Analogue Scale

    A VAS was employed to measure subjective stress ratings. Values on this scale vary continuously between 0 (no stress) to 10 (most stress imaginable). Higher values indicate higher assessments of the subject's stress level.

    Measured: up to 3 weeks

  9. Naloxone Symptom Assessments

    A numerical ratings scale was used to assess potential naloxone related symptomology after each clinical research unit session. "0" was designated as "non-existent" and "6" was characterized as "extremely strong". We measured symptoms corresponding to "dry mouth, dry skin, blurred vision, sedation, nausea, dizziness, and headache."

    Measured: Up to 3 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Feb 2018
  2. Study start13 Mar 2017
  3. Primary completion27 Jun 2017
  4. Study completion27 Jun 2017

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Early Phase 1
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Crossover
Model description
The study employed a double blind 3x2x2 crossover factorial design. Baseline pain intensity and pain unpleasantness ratings were assessed using visual analog scales (11 point) obtained before and after four, 5-minute noxious heat stimulation series (49°C). Study volunteers (20/group; 60 total) were randomized and subsequently participated in a four session (20min/session) mindfulness meditation, placebo-meditation, or slow-breathing training regimen. After training completion, subjects reported to the Wake Forest Clinical Research Unit to test the study hypotheses across two separate experimental sessions. Half of the study volunteers (n=10) from each group were administered naloxone (opioid antagonist; 0.15 mg/kg bolus+ 0.1mg/kg/hour infusion) and in the subsequent session were administered IV placebo-saline and vice versa.
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
60 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03419858
Sponsor's protocol ID
IRB00040519
Status last verified
Jun 2019
First submitted
16 Jan 2018
Last updated
11 Jun 2019
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Apkarian AV, Bushnell MC, Treede RD, Zubieta JK. Human brain mechanisms of pain perception and regulation in health and disease. Eur J Pain. 2005 Aug;9(4):463-84. doi: 10.1016/j.ejpain.2004.11.001. Epub 2005 Jan 21.

    PubMed 15979027
  • Bertisch SM, Wee CC, Phillips RS, McCarthy EP. Alternative mind-body therapies used by adults with medical conditions. J Psychosom Res. 2009 Jun;66(6):511-9. doi: 10.1016/j.jpsychores.2008.12.003. Epub 2009 Mar 3.

    PubMed 19446710
  • Borras MC, Becerra L, Ploghaus A, Gostic JM, DaSilva A, Gonzalez RG, Borsook D. fMRI measurement of CNS responses to naloxone infusion and subsequent mild noxious thermal stimuli in healthy volunteers. J Neurophysiol. 2004 Jun;91(6):2723-33. doi: 10.1152/jn.00249.2003.

    PubMed 15136603
  • Brown CA, Jones AKP. Meditation experience predicts less negative appraisal of pain: electrophysiological evidence for the involvement of anticipatory neural responses. Pain. 2010 Sep;150(3):428-438. doi: 10.1016/j.pain.2010.04.017. Epub 2010 May 21.

    PubMed 20494517
  • Chalaye P, Goffaux P, Lafrenaye S, Marchand S. Respiratory effects on experimental heat pain and cardiac activity. Pain Med. 2009 Nov;10(8):1334-40. doi: 10.1111/j.1526-4637.2009.00681.x. Epub 2009 Aug 7.

    PubMed 19671085
  • Clarke TC, Black LI, Stussman BJ, Barnes PM, Nahin RL. Trends in the use of complementary health approaches among adults: United States, 2002-2012. Natl Health Stat Report. 2015 Feb 10;(79):1-16.

    PubMed 25671660
  • Coghill RC, McHaffie JG, Yen YF. Neural correlates of interindividual differences in the subjective experience of pain. Proc Natl Acad Sci U S A. 2003 Jul 8;100(14):8538-42. doi: 10.1073/pnas.1430684100. Epub 2003 Jun 24.

    PubMed 12824463
  • Cusens B, Duggan GB, Thorne K, Burch V. Evaluation of the breathworks mindfulness-based pain management programme: effects on well-being and multiple measures of mindfulness. Clin Psychol Psychother. 2010 Jan-Feb;17(1):63-78. doi: 10.1002/cpp.653.

    PubMed 19911432
  • Eippert F, Bingel U, Schoell ED, Yacubian J, Klinger R, Lorenz J, Buchel C. Activation of the opioidergic descending pain control system underlies placebo analgesia. Neuron. 2009 Aug 27;63(4):533-43. doi: 10.1016/j.neuron.2009.07.014.

    PubMed 19709634
  • Friesner SA, Curry DM, Moddeman GR. Comparison of two pain-management strategies during chest tube removal: relaxation exercise with opioids and opioids alone. Heart Lung. 2006 Jul-Aug;35(4):269-76. doi: 10.1016/j.hrtlng.2005.10.005.

    PubMed 16863899
  • Grant JA, Rainville P. Pain sensitivity and analgesic effects of mindful states in Zen meditators: a cross-sectional study. Psychosom Med. 2009 Jan;71(1):106-14. doi: 10.1097/PSY.0b013e31818f52ee. Epub 2008 Dec 10.

    PubMed 19073756
  • Grant JA, Courtemanche J, Duerden EG, Duncan GH, Rainville P. Cortical thickness and pain sensitivity in zen meditators. Emotion. 2010 Feb;10(1):43-53. doi: 10.1037/a0018334.

    PubMed 20141301
  • Grill JD, Coghill RC. Transient analgesia evoked by noxious stimulus offset. J Neurophysiol. 2002 Apr;87(4):2205-8. doi: 10.1152/jn.00730.2001.

    PubMed 11929939
  • Kabat-Zinn J. An outpatient program in behavioral medicine for chronic pain patients based on the practice of mindfulness meditation: theoretical considerations and preliminary results. Gen Hosp Psychiatry. 1982 Apr;4(1):33-47. doi: 10.1016/0163-8343(82)90026-3.

    PubMed 7042457
  • Kabat-Zinn J, Lipworth L, Burney R. The clinical use of mindfulness meditation for the self-regulation of chronic pain. J Behav Med. 1985 Jun;8(2):163-90. doi: 10.1007/BF00845519.

    PubMed 3897551

Questions about this trial

What is this clinical trial studying?

A Early Phase 1 study testing Mindfulness Meditation, Slow-Breathing and Naloxone in people with Pain, run by University of California, San Diego at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 11 Jun 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Visual Analog Scale Pain intensity and Unpleasantness ratings as a function of each respective cognitive manipulations and activation in response to naloxone and/or saline. (time frame: Up to 3 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03419858, which also lists 40 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 Jun 2019.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in