N-octanoyl dopamine is superior to dopamine in protecting graft contractile function when administered to the heart transplant recipients from brain-dead donors

Publication date: Available online 16 October 2019Source: Pharmacological ResearchAuthor(s): Sivakkanan Loganathan, Yuxing Guo, Weipeng Jiang, Tamás Radovits, Mihály Ruppert, Alex Ali Sayour, Maik Brune, Paige Brlecic, Phillipp Gude, Adrian-Iustin Georgevici, Benito Yard, Matthias Karck, Sevil Korkmaz-Icöz, Gábor SzabóAbstractThe major source of heart transplantation comes from brain-dead (BD) donors. However, brain death and myocardial ischemia/reperfusion injury during transplantation may lead to cardiac dysfunction and hemodynamic instability. A previous work demonstrated that pre-treatment of BD donors with dopamine improved the graft survival of heart allograft in recipient after transplantation. However, low-dose dopamine treatment might result in tachycardia and hypertension. Our previous experimental study showed that pre-treatment of BD donor rats with the dopamine derivate N-octanoyl dopamine (NOD), devoid of any hemodynamic effects, improved graft function after transplantation. Herein, we hypothesized that NOD confers superior myocardial protection and improves graft function than dopamine, when administered to the heart transplant recipients from BD donors. Male Lewis donor rats were either subjected to sham-operation or brain death via a subdurally placed balloon followed by 5.5 h monitoring. Then, the hearts were explanted and heterotopically transplanted into Lewis recipient rats. Shortly before the onset of reperfusion, continuous intravenous infusion ...
Source: Pharmacological Research - Category: Drugs & Pharmacology Source Type: research