CI

At a glance

ClinicalIndex Comparison Record
N/AActive· 17 enrolled
Drug / intervention
Positron Emission Tomography (PET) scanning of cardiac function at 3 time points across the 24 hour circadian cyclecombination
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03388788
NCT03388788N/AActive

Circadian Mechanisms of Cardiovascular Risk in Obesity

Oregon Health and Science University·observational·Posted Jan 3, 2018·Updated May 18, 2026

In Brief

An observational study evaluating Positron Emission Tomography (PET) scanning of cardiac function at 3 time points across the 24 hour circadian cycle for Cardiovascular Risk Factor and 2 related conditions. Active but no longer recruiting, targeting 17 participants across 1 site.

Detailed Summary

A multidisciplinary investigation examining the circadian mechanisms regulating cardiovascular (CV) risk, with an additional focus on obesity. Specifically, in a valid circadian protocol, the investigators aim to study resting cardiovascular risk markers and the reactivity of circadian rhythms in these risk markers to standardized stressors. It is intended to compare results in lean and obese individuals to determine if there are specific risks across the circadian cycle specific to obesity. Furthermore, using an exploratory approach, the investigators propose to explore impairment in pre/post synaptic function in the cardiac left ventricle.

Study Details

Study Typeobservational
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

N/AActiveOverdue
201820192020202120222023202420252026
First PostedJan 3, 2018
Enrollment StartMay 1, 2018
Primary CompletionSep 30, 2024
Study CompletionJun 30, 2026
TodayJul 2, 2026
Enrollment to primary: 6.4 yearsPosted 8.5 years ago

Interventions

Positron Emission Tomography (PET) scanning of cardiac function at 3 time points across the 24 hour circadian cyclecombination

Drugs are used for as part of physiological monitoring and not as interventions, including imaging using radiopharmaceuticals (11C-meta-hydroxyephedrine, and 11C-CGP12177).