Published in:
01-03-2014 | Pharmacologic Therapy (WHW Tang, Section Editor)
Neuregulin as a Heart Failure Therapy and Mediator of Reverse Remodeling
Authors:
Cristi L. Galindo, Sergey Ryzhov, Douglas B. Sawyer
Published in:
Current Heart Failure Reports
|
Issue 1/2014
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Abstract
The beta isoform of Neuregulin-1 (NRG-1β), along with its receptors (ErbB2–4), is required for cardiac development. NRG-1β, as well as the ErbB2 and ErbB4 receptors, is also essential for maintenance of adult heart function. These observations have led to its evaluation as a therapeutic for heart failure. Animal studies and ongoing clinical trials have demonstrated beneficial effects of two forms of recombinant NRG-1β on cardiac function. In addition to the possible role for recombinant NRG-1βs as heart failure therapies, endogenous NRG-1β/ErbB signaling appears to play a role in restoring cardiac function after injury. The potential mechanisms by which NRG-1β may act as both a therapy and a mediator of reverse remodeling remain incompletely understood. In addition to direct effects on cardiac myocytes NRG-1β acts on the vasculature, interstitium, cardiac fibroblasts, and hematopoietic and immune cells, which, collectively, may contribute to NRG-1β’s role in maintaining cardiac structure and function, as well as mediating reverse remodeling.