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J Thorac Cardiovasc Surg 2006;131:1417-1418
© 2006 The American Association for Thoracic Surgery
Brief Communication |
Service de Physiologie et d'Explorations Fonctionnelles, Hôpitaux Universitaires et Institut de Physiologie, Faculté de Médecine, Strasbourg, France.
Received for publication January 3, 2006; accepted for publication January 24, 2006. * Address for reprints: Bernard P. Geny, MD, PhD, 11 rur Humann, Strasbourg 67000, France. (Email: Bernard.Geny@physio-ulp.u-strasbg.fr).
| The first 20% of the full text of this article appears below. |
Heart transplantation is an excellent therapeutic alternative in end-stage heart failure, allowing a good survival for about half of heart transplant recipients until 15 years after surgical intervention.
However, surgically induced cardiac denervation increases the resting heart rate in heart transplant recipients through a withdrawal of the vagal tone. Blunting the heart rate reserve explains in part the reduced exercise capacity observed after heart transplantation. Additionally, with survival appearing to be inversely related to the degree of sympathetic activation and in particular to the noradrenergic drive to the diseased myocardium,
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it might be very interesting to modulate peptides with cardiac sympathoinhibitory activity after heart transplantation.
Atrial natriuretic peptides (ANPs) might be a good candidate. Indeed, cardiac natriuretic peptides are important diagnostic and prognostic tools, and their therapeutic interest is growing because of their diuretic, natriuretic, and vasodilatory properties. Thus ANP infusion is useful in poorly responsive oliguria after cardiac surgery.
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Moreover, importantly, ANPs possess sympathoinhibitory properties that might not only prevent against diuretic-induced sympathetic stimulation but that
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Rebuttal from Drs. Richard, Zoll, Mettauer, Piquard, and Geny J Appl Physiol, February 1, 2008; 104(2): 563 - 564. [Full Text] [PDF] |
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