A Metabolomic Approach to Probing Myocardial Fuel Shifts in Human Heart Failure

April 24, 2017 updated by: University of Florida

This proposal is designed to test the hypothesis that humans shift to reliance on ketone bodies as a cardiac fuel source during the development of HF. The investigator also propose that this shift to ketone utilization can be detected by metabolomic profiling of blood.

Specific Aim 1: To determine if the failing human heart exhibits increased extraction of blood-borne ketone bodies. Ketone bodies will be measured in coronary sinus, arterial, and central venous blood samples to determine AV differences. The HF group will be comprised of patients undergoing cardiac resynchronization therapy with an implantable cardioverter-defibrillator. The Control group will be compromised of patients without evidence of structural heart disease who are undergoing catheter ablation for supraventricular tachycardia.

Specific Aim 2: To determine whether blood samples from humans with HF display metabolomic signatures indicative of increased myocardial ketone body utilization. Quantitative targeted metabolomics will be performed on the samples described in Aim 1 to determine if metabolite markers (e.g. C4-OH acylcarnitine, acetylcarnitine, succinate) found to be associated with increased myocardial ketone body oxidation in animal models are increased in the human HF group compared to the controls.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Detailed Description

After subjects agree to participate in this study and are scheduled to have cardiac resynchronization therapy, the research personnel will take 1 teaspoon of blood before and after the scheduled cardiac procedure for comparison.

Once subjects agree to participate in this study and are scheduled to have a catheter ablation procedure, research personnel will take 1 teaspoon of blood during the scheduled cardiac procedure.

These samples will be taken from catheters already placed during the scheduled cardiac procedure.

Blood will be sent to a lab at the Sanford-Burnham Metabolomics Core Facility in Orlando, Florida for analysis.

Study Type

Observational

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Florida
      • Gainesville, Florida, United States, 32610
        • University of Florida

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Subjects undergoing cardiac resynchronization therapy or receiving a catheter ablation procedure.

Description

Inclusion Criteria:

  • Undergoing cardiac resynchronization therapy
  • Undergoing sinus cannulation

Exclusion Criteria:

  • NYHA class II-IV heart failure

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Heart failure subjects
Heart failure subjects undergoing cardiac resynchronization will have a blood drawn for this study.
Other: Blood Drawn
Both groups will have 1 teaspoon of blood drawn for analysis.
Heart arrhythmia patients
Heart arrhythmia patients undergoing ablation will have a blood drawn for this study.
Other: Blood Drawn
Both groups will have 1 teaspoon of blood drawn for analysis.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Increased extraction of blood-borne ketone bodies
Time Frame: 1 day
Ketone bodies will be measured in coronary sinus, arterial, and central venous blood samples to determine AV differences
1 day
Determine whether heart failure blood samples display metabolomic signatures
Time Frame: 1 day
Quantitative targeted metabolomics will be performed on the samples described in Outcome 1 to determine if metabolite markers (e.g. C4-OH acylcarnitine, acetylcarnitine, succinate) found to be associated with increased myocardial ketone body oxidation in animal models are increased in the human HF group compared to the controls.
1 day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Florida

Investigators

  • Principal Investigator: Eileen Handberg, PhD, University of Florida

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

March 1, 2017

Primary Completion (Anticipated)

December 1, 2017

Study Completion (Anticipated)

February 1, 2018

Study Registration Dates

First Submitted

February 17, 2015

First Submitted That Met QC Criteria

February 23, 2015

First Posted (Estimate)

February 24, 2015

Study Record Updates

Last Update Posted (Actual)

April 26, 2017

Last Update Submitted That Met QC Criteria

April 24, 2017

Last Verified

April 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 201401007

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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