Experimental and clinical transplantation : official journal of the Middle East Society for Organ Transplantation · 2016
Vascular Endothelial Growth Factor-B Overexpressing Hearts Are Not Protected From Transplant-Associated Ischemia-Reperfusion Injury.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Raissadati Alireza, Tuuminen Raimo, Dashkevich Alexey, Bry Maija, Kivelä Riikka, Anisimov Andrey, Syrjälä Simo, Arnaudova Ralica, Rouvinen Eeva, Keränen Mikko Ai, Krebs Rainer, Nykänen Antti I, Lemström Karl B
Аннотация
OBJECTIVES: Cardiac vascular endothelial growth factor-B transgene limits myocardial damage in rat infarction models. We investigated whether heart transplant vascular endothelial growth factor-B overexpression protected against ischemia-reperfusion injury.
MATERIALS AND METHODS: We transplanted hearts heterotopically from Dark Agouti to Wistar Furth rats. To characterize the role of vascular endothelial growth factor-B in ischemia-reperfusion injury, we transplanted either long-term human vascular endothelial growth factor-B transgene overexpressing hearts from Wistar Furth rats or short-term adeno-associated virus 9-human vascular endothelial growth factor-B-transduced hearts from Dark Agouti rats into Wistar Furth rats. Heart transplants were subjected to 2 hours of cold and 1 hour of warm ex vivo ischemia. Samples were collected 6 hours after reperfusion.
RESULTS: Two hours of cold and 1 hour of warm ischemia increased vascular endothelial growth factor-B mRNA levels 2-fold before transplant and 6 hours after reperfusion. Transgenic vascular endothelial growth factor-B overexpression caused mild cardiac hypertrophy and elevated cardiac troponin T levels 6 hours after reperfusion. Laser Doppler measurements indicated impaired epicardial tissue perfusion in these transgenic transplants. Recombinant human vascular endothelial growth factor-B increased mRNA levels of cytochrome c oxidase and extracellular ATPase CD39, suggesting active oxidative phosphorylation and high ATP production. Adeno-associated virus 9-mediated vascular endothelial growth factor-B overexpression in transplanted hearts increased intragraft macrophages 1.5-fold and proinflammatory cytokine interleukin 12 p35 mRNA 1.6-fold, without affecting recipient serum cardiac troponin T concentration.
CONCLUSIONS: Vascular endothelial growth factor-B expression in transplanted hearts is linked to ischemia and ischemia-reperfusion injury. Cardiac transgenic vascular endothelial growth factor-B overexpression failed to protect heart transplants from ischemia-reperfusion injury.
MATERIALS AND METHODS: We transplanted hearts heterotopically from Dark Agouti to Wistar Furth rats. To characterize the role of vascular endothelial growth factor-B in ischemia-reperfusion injury, we transplanted either long-term human vascular endothelial growth factor-B transgene overexpressing hearts from Wistar Furth rats or short-term adeno-associated virus 9-human vascular endothelial growth factor-B-transduced hearts from Dark Agouti rats into Wistar Furth rats. Heart transplants were subjected to 2 hours of cold and 1 hour of warm ex vivo ischemia. Samples were collected 6 hours after reperfusion.
RESULTS: Two hours of cold and 1 hour of warm ischemia increased vascular endothelial growth factor-B mRNA levels 2-fold before transplant and 6 hours after reperfusion. Transgenic vascular endothelial growth factor-B overexpression caused mild cardiac hypertrophy and elevated cardiac troponin T levels 6 hours after reperfusion. Laser Doppler measurements indicated impaired epicardial tissue perfusion in these transgenic transplants. Recombinant human vascular endothelial growth factor-B increased mRNA levels of cytochrome c oxidase and extracellular ATPase CD39, suggesting active oxidative phosphorylation and high ATP production. Adeno-associated virus 9-mediated vascular endothelial growth factor-B overexpression in transplanted hearts increased intragraft macrophages 1.5-fold and proinflammatory cytokine interleukin 12 p35 mRNA 1.6-fold, without affecting recipient serum cardiac troponin T concentration.
CONCLUSIONS: Vascular endothelial growth factor-B expression in transplanted hearts is linked to ischemia and ischemia-reperfusion injury. Cardiac transgenic vascular endothelial growth factor-B overexpression failed to protect heart transplants from ischemia-reperfusion injury.
Предметные рубрики MeSH
Adenosine TriphosphateAnimalsAntigens, CDApoptosisApyraseCold IschemiaCoronary CirculationDependovirusDisease Models, AnimalElectron Transport Complex IVGenetic VectorsHeart TransplantationInterleukin-12 Subunit p35MacrophagesMaleMyocardial Reperfusion InjuryMyocytes, CardiacOxidative PhosphorylationRats, Inbred WFRats, TransgenicTime FactorsTransduction, GeneticTroponin TVascular Endothelial Growth Factor BWarm Ischemia