Stress, Psychological Clinical Trial
— BASSOfficial title:
Neuroinflammatory Mechanisms Linking Chronic Stress to Motivational Deficits
Verified date | April 2024 |
Source | University of North Carolina, Chapel Hill |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Motivational deficits such as anhedonia are core to several psychiatric disorders and underlie significant functional impairment. This double-blind, placebo-controlled crossover trial of minocycline, an anti-[neuro]inflammatory agent, examines links between chronic stress and responses to a reward-related motivation task. It will evaluate the effects of pharmacologically attenuating neuroinflammation on behavioral responses to a reward-related motivation task in individuals experiencing unemployment. Understanding the effects of neuroinflammation on reward function among individuals experiencing chronic stress represents a critical first step in identifying novel neuroimmune targets for future clinical trials.
Status | Completed |
Enrollment | 18 |
Est. completion date | December 19, 2023 |
Est. primary completion date | December 19, 2023 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 25 Years to 50 Years |
Eligibility | Inclusion Criteria: - 25-50 years old - Unemployed (working less than 20 hours per week) - Have been unemployed for at least 6 months - Seeking employment - Having trouble finding a job (i.e., actively seeking and applying for jobs but not successful in landing a job) - Reports greater than 5 points on Job Stress Items - Regular access to a mobile phone Exclusion Criteria: - Self-reported physical illnesses: diabetes, cardiovascular diseases, high blood pressure, inflammatory bowel diseases, rheumatoid arthritis, asthma, autoimmune disease, Crohn's disease, ulcerative colitis, lupus - neurological conditions (e.g., Traumatic Brain Injury, stroke) - pregnant (as measured by urine pregnancy screen) or breastfeeding - current use of psychotropic medications - Current regular recreational drug or alcohol use (i.e., 4 or more times per week) - chronic diseases that significantly impact inflammatory markers (e.g., cancer) - known allergies or hypersensitivities to tetracycline antibiotics, aspirin or other NSAIDs - current antibiotic use - regular use of steroidal or non-steroidal anti-inflammatory medications (i.e., 2 or more times a week) |
Country | Name | City | State |
---|---|---|---|
United States | Howell Hall | Chapel Hill | North Carolina |
Lead Sponsor | Collaborator |
---|---|
University of North Carolina, Chapel Hill | Robert Wood Johnson Foundation |
United States,
Kangas BD, Der-Avakian A, Pizzagalli DA. Probabilistic Reinforcement Learning and Anhedonia. Curr Top Behav Neurosci. 2022;58:355-377. doi: 10.1007/7854_2022_349. — View Citation
Llerena K, Park SG, McCarthy JM, Couture SM, Bennett ME, Blanchard JJ. The Motivation and Pleasure Scale-Self-Report (MAP-SR): reliability and validity of a self-report measure of negative symptoms. Compr Psychiatry. 2013 Jul;54(5):568-74. doi: 10.1016/j.comppsych.2012.12.001. Epub 2013 Jan 22. — View Citation
Snaith RP, Hamilton M, Morley S, Humayan A, Hargreaves D, Trigwell P. A scale for the assessment of hedonic tone the Snaith-Hamilton Pleasure Scale. Br J Psychiatry. 1995 Jul;167(1):99-103. doi: 10.1192/bjp.167.1.99. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in response bias during the Probabilistic Reward Task | The aim of Probabilistic Reward Task (PRT) is to win as much money as possible by correctly identifying the presence of a short versus long mouth on a cartoon face. The task aims to produce a response bias toward the mouth length that is more often positively reinforced. The response bias score is a ratio of the number of times the participant chooses the high reward versus the low reward stimulus. Scores range from -1 to +1, with a positive score indicating a stronger bias toward the high reward stimulus.
The change in response bias is calculated by subtracting response bias during the PRT in the placebo condition from the minocycline condition. This difference measures an individual's change in reward behavior after a 5-day dosage of an anti-neuroinflammatory agent. |
within approximately 24 hours after the final dose; Day 6 minocycline to Day 6 placebo | |
Secondary | Change in Snaith Hamilton Pleasure Scale score | The Snaith-Hamilton Pleasure Scale (SHAPS) is a tool to assess symptoms of reduced motivation. The SHAPS uses 14 questions, each rated on a Likert scale of 1-4. The total score on the scale ranges from 14-56, with lower scores reflecting lower motivation. Scores will be compared across conditions to determine whether motivation changes in the minocycline condition as compared to the placebo. | within approximately 24 hours after the final dose; Day 6 minocycline to Day 6 placebo | |
Secondary | Change in Motivation and Pleasure Scale (MAPS) score | The Motivation and Pleasure Scale (MAP) will be used to capture self-reported aspects of reduced motivation. The scale uses 18 questions, each rated on a Likert scale of 0-4. The total score on the scale ranges from 0-72, with lower scores reflecting lower motivation. Scores will be compared across conditions to determine whether motivation changes in the minocycline condition as compared to the placebo. | within approximately 24 hours after the final dose; Day 6 minocycline to Day 6 placebo |
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