NCT02972554

Brief Summary

This randomized, double-blind, placebo-controlled study of propranolol will shed important light on how sympathetic nervous system (SNS) activation influences psychological and inflammatory responses to acute stress. Results from this study will inform both the basic science literature that is attempting to map the physiological mechanisms by which psychological stress may lead to poor mental and physical health, and may also ultimately have therapeutic relevance for individuals who are experiencing high levels of stress that is putting their health at risk. Utilizing a psychopharmacological approach allows for the circumvention of many of the challenges of conducting this research in human populations, and will allow for conclusions regarding causality, given that SNS activation will be experimentally manipulated, rather than relying on correlational measures of SNS activity that are difficult to assess and are not appropriate for asking if SNS activity causes changes in psychology and biology.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
92

participants targeted

Target at P50-P75 for phase_4

Timeline
Completed

Started Jan 2016

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 26, 2016

Completed
9 months until next milestone

First Submitted

Initial submission to the registry

October 26, 2016

Completed
28 days until next milestone

First Posted

Study publicly available on registry

November 23, 2016

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 10, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 10, 2017

Completed
1.2 years until next milestone

Results Posted

Study results publicly available

December 19, 2018

Completed
Last Updated

December 19, 2018

Status Verified

January 1, 2018

Enrollment Period

1.7 years

First QC Date

October 26, 2016

Results QC Date

October 19, 2018

Last Update Submit

November 29, 2018

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in Interleukin-6 (IL-6)

    Measured in blood plasma using enzyme-linked immunosorbent assay. Log-transformed prior to analysis to correct for skew in data. Four different change scores were calculated: first, change at post-drug from pre-drug baseline; second, the change at 30-min post-stressor from post-drug baseline; third, change at 60-min post-stressor from post-drug baseline; and fourth, change at 90-min post-stressor from post-drug baseline.

    Pre-drug baseline; 60-min post-drug administration baseline before stressor; 30-min post-stressor; 60-min post-stressor; 90-min post-stressor

Secondary Outcomes (5)

  • Change in Salivary Cortisol

    Pre-drug baseline; 60-min post-drug administration baseline before stressor; 15-min post-stressor; 30-min post-stressor

  • Change in Salivary Alpha Amylase

    Pre-drug baseline; 60-min post-drug administration baseline before stressor; 15-min post-stressor

  • Change in Pre-Ejection Period

    Pre-drug baseline; 60-min post-drug administration baseline before stressor; 2-min before the stressor; 15-min during stressor, 7-min recovery post-stressor

  • Change in Respiratory Sinus Arrhythmia

    Pre-drug baseline; 60-min post-drug administration baseline before stressor; 2-min before the stressor; 15-min during stressor, 7-min recovery post-stressor

  • Change in Negative, High Arousal Emotion

    Pre-drug baseline; 60-min post-drug administration baseline before stressor; 2-min before the stressor; 1-min post-stressor

Study Arms (2)

Propanolol Hydrochloride

EXPERIMENTAL

This is the experimental group given the beta-blocker

Drug: Propanolol hydrochloride

Placebo

PLACEBO COMPARATOR

This is the control group given a placebo.

Other: Placebo

Interventions

One-time dose of 40mg of propranolol

Also known as: Inderal
Propanolol Hydrochloride
PlaceboOTHER

Outside casing matching that of active drug

Also known as: Sugar pill
Placebo

Eligibility Criteria

Age18 Years - 25 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)
Inclusionary Criteria: 1. Healthy volunteers 2. Age 18-25 3. Fluent in English Exclusionary Criteria: 1. presence or history of chronic physical illness (especially disorders with an inflammatory component, such as rheumatoid arthritis, asthma, allergies, or issues that can affect the heart, including low-blood pressure or other heart conditions) 2. presence or history of psychiatric illness (depression, anxiety) 3. any current prescription medication use 4. currently pregnant or planning to become pregnant 5. engagement in a number of health--compromising behaviors that may affect levels of pro-inflammatory cytokines, including cigarette smoking, excessive caffeine intake and sleep disturbance (e.g., working night shifts) 6. body mass index (BMI) greater than 30, given that adiposity is known to relate to baseline levels of inflammation 7. anxiety about or previous history of problems with blood draws (e.g., fainting) 8. any reported heart conditions 9. history of fainting spells 10. low pulse, as measured at beginning of session I (below 60) 11. low blood pressure, as measured at beginning of session I (below 80)

Contact the study team to discuss eligibility requirements. They can help determine if this study is right for you.

Sponsors & Collaborators

Study Sites (1)

Howell Hall

Chapel Hill, North Carolina, 27599, United States

Location

Related Publications (32)

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  • MacCormack JK, Armstrong-Carter EL, Gaudier-Diaz MM, Meltzer-Brody S, Sloan EK, Lindquist KA, Muscatell KA. beta-Adrenergic Contributions to Emotion and Physiology During an Acute Psychosocial Stressor. Psychosom Med. 2021 Nov-Dec 01;83(9):959-968. doi: 10.1097/PSY.0000000000001009.

MeSH Terms

Conditions

Stress, PsychologicalInflammation

Interventions

PropranololSugars

Condition Hierarchy (Ancestors)

Behavioral SymptomsBehaviorPathologic ProcessesPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

PhenoxypropanolaminesPropanolaminesAmino AlcoholsAlcoholsOrganic ChemicalsPropanolsAminesNaphthalenesPolycyclic Aromatic HydrocarbonsHydrocarbons, AromaticHydrocarbons, CyclicHydrocarbonsPolycyclic CompoundsCarbohydrates

Limitations and Caveats

1\. Not all salivary alpha amylase samples were assayed in duplicate because there was not enough saliva for the 15-min post-stress time point. 2. For the first ten subjects, a shorter version of the PANAS with 20 rather than full 40 items was used.

Results Point of Contact

Title
Dr. Keely A. Muscatell
Organization
University of North Carolina at Chapel Hill

Study Officials

  • Keely A Muscatell, Ph.D

    University of North Carolina at Chapel Hill, Psychology & Neuroscience

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 26, 2016

First Posted

November 23, 2016

Study Start

January 26, 2016

Primary Completion

October 10, 2017

Study Completion

October 10, 2017

Last Updated

December 19, 2018

Results First Posted

December 19, 2018

Record last verified: 2018-01

Data Sharing

IPD Sharing
Will not share

Locations