Metabolic Manipulation in Chronic Heart Failure

Status Completed

Clinical Trial Summary

Conventional measures used for the treatment of chronic heart failure act predominantly by reducing the work performed by the heart. In a recent study, the investigators showed that one drug (perhexiline) substantially improved symptoms and cardiac function in heart failure. The investigators wish to confirm these findings and test whether or not this drug acts by altering the heart's energy source thus augmenting the energetic status and work efficiency of the heart.

Clinical Trial Description

Perhexiline maleate is an antianginal agent which increases the efficiency of energy production by shifting substrate utilisation from free fatty acids towards glucose. We showed that perhexiline therapy was highly effective in improving exercise capacity, symptoms and cardiac function in patients with systolic heart failure of both ischaemic and non ischaemic aetiology. Perhexiline acts by inhibiting both carnitine palmitoyl transferase-1 (CPT-1) and CPT-2, which are key enzymes in mitochondrial free fatty acid uptake. This leads to increased myocardial glucose substrate utilization. Further we wish to ascertain whether or not this drug improves cardiac energetics and efficiency by altering substrate utilization. In this proposal we will assess the cardiac function (by cardiac Magnetic Resonance Imaging MRI), cardiac energetic status (by cardiac Magnetic Resonance Spectroscopy MRS), cardiac efficiency (via pressure-volume loops) and substrate utilization (via left and right heart catheterization), following one month of perhexiline therapy or placebo in patients with symptomatic idiopathic dilated cardiomyopathy on optimal conventional heart failure medications. An interim analysis is planned after 20 patients. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00841139
Study type	Interventional
Source	University Hospital Birmingham NHS Foundation Trust
Contact
Status	Completed
Phase	Phase 2
Start date	February 2009
Completion date	September 2011

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