CIRcadian Rhythms and CortisoL. Effects on Substrate Metabolism and Clock Gene Expression and Functioning
CIRCLE
1 other identifier
interventional
10
1 country
1
Brief Summary
The aim of this project is to study the effects of exogenous glucocorticoid exposure on substrate metabolism, energy expenditure and correlates of circadian rhythmicity in healthy adults. The hypotheses are: Short-term high dose glucocorticoid exposure in healthy subjects disrupts:
- The inherent circadian pattern of the respiratory exchange ratio and REE
- Sleep quality, appetite and food intake
- Clock gene expression and function in adipose tissue, skeletal muscle and blood leukocytes
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable healthy
Started Sep 2023
Typical duration for not_applicable healthy
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 6, 2023
CompletedFirst Posted
Study publicly available on registry
September 13, 2023
CompletedStudy Start
First participant enrolled
September 15, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 13, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2024
CompletedApril 4, 2025
April 1, 2025
7 months
September 6, 2023
April 1, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (4)
Change in Sleeping RER
Change in respiratory exchange ratio (RER) during sleep between placebo and prednisolone
Study day 1 and 2 (7 weeks apart)
Change in TEE
Change in Total Energy Expenditure between placebo and prednisolone
Study day 1 and 2 (7 weeks apart)
Change in REE
Change in Resting Energy Expenditure between placebo and prednisolone and morning/evening
Study day 1 and 2 (7 weeks apart)
Change in RER from fasting to feeding
Change in respiratory exchange ratio (RER) after standard meal between placebo and prednisolone and morning/evening
Study day 1 and 2 (7 weeks apart)
Secondary Outcomes (33)
Change in PAEE
Study day 1 and 2 (7 weeks apart)
Change in SEE
Study day 1 and 2 (7 weeks apart)
Change in DIT
Study day 1 and 2 (7 weeks apart)
Change in clock gene mRNA levels leukocytes
Study day 1 and 2 (7 weeks apart)
Change in clock gene mRNA levels adipose tissue
Study day 1 and 2 (7 weeks apart)
- +28 more secondary outcomes
Study Arms (2)
Prednisolone first, then placebo
EXPERIMENTALPrednisolone 12.5 mg twice daily for 5 days. Placebo twice daily for 5 days
Placebo first, then prednisolone
EXPERIMENTALPlacebo twice daily for 5 days Prednisolone 12.5 mg twice daily for 5 days.
Interventions
Placebo similar to prednisolone
Eligibility Criteria
You may qualify if:
- Male sex
- BMI 20-30 kg/m2
- Written informed consent
You may not qualify if:
- Any chronic disease requiring daily medication excluding atopic skin or hay fever
- Alcohol consumption \>21 units per week
- Strong CYP3A4 inhibitors or inducers
- Use of glucocorticoid (GC) formulations: Inhaled corticosteroids, intra-articular or intramuscular injections, steroid creams European steroid group IV-V used in the genital area
- Permitted glucocorticoid formulations: eye-drops, nasal spray, GC creams European steroid group I-III, and European steroid group IV-V used in the non-genital area only
- Shift work
- Severe claustrophobia
- Use of melatonin
- Previous diagnosis of a sleep disorder
- Known severe sleep apnea (\>30 respiration breaks/hour over 10 seconds)
- Deemed unable to complete the study safely by investigator
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- University of Aarhuslead
- Aarhus University Hospitalcollaborator
Study Sites (1)
Department of Endocrinology and Internal Medicine
Aarhus, State, 8200, Denmark
MeSH Terms
Interventions
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Jens Otto L Jørgensen, Professor
Aarhus University Hospital
- PRINCIPAL INVESTIGATOR
Simon B Hansen, MD
Aarhus University Hospital
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- BASIC SCIENCE
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
September 6, 2023
First Posted
September 13, 2023
Study Start
September 15, 2023
Primary Completion
April 13, 2024
Study Completion
December 1, 2024
Last Updated
April 4, 2025
Record last verified: 2025-04
Data Sharing
- IPD Sharing
- Will not share