The Efficacy of Risk Factor Modification Compared to NAD+ Repletion in Diastolic Heart Failure

JACC Basic Transl Sci. 2024 Mar 20;9(6):733-750. doi: 10.1016/j.jacbts.2024.01.011. eCollection 2024 Jun.

Abstract

Heart failure (HF) with left ventricular diastolic dysfunction is a growing global concern. This study evaluated myocardial oxidized nicotinamide adenine dinucleotide (NAD+) levels in human systolic and diastolic HF and in a murine model of HF with preserved ejection fraction, exploring NAD+ repletion as therapy. We quantified myocardial NAD+ and nicotinamide phosphoribosyltransferase levels, assessing restoration with nicotinamide riboside (NR). Findings show significant NAD+ and nicotinamide phosphoribosyltransferase depletion in human diastolic HF myocardium, but NR successfully restored NAD+ levels. In murine HF with preserved ejection fraction, NR as preventive and therapeutic intervention improved metabolic and antioxidant profiles. This study underscores NAD+ repletion's potential in diastolic HF management.

Keywords: NAD+ repletion; diastolic heart failure; heart failure.