Abstract:
:The prenatal origins of heart disease in offspring have been established. However, research in species with developmental milestones comparable to humans is lacking, preventing translation of this knowledge to clinical contexts. Using sheep and chickens, two species with similar cardiovascular developmental milestones to humans, we combined in vivo experiments with in vitro studies at organ, cellular, mitochondrial, and molecular levels. We tested mitochondria-targeted antioxidant intervention with MitoQ against cardiovascular dysfunction programmed by developmental hypoxia, a common complication in human pregnancy. Experiments in sheep determined in vivo fetal and adult cardiovascular function through surgical techniques not possible in humans, while those in chicken embryos isolated effects independent of maternal or placental influences. We show that hypoxia generates mitochondria-derived oxidative stress during cardiovascular development, programming endothelial dysfunction and hypertension in adult offspring. MitoQ treatment during hypoxic development protects against this cardiovascular risk via enhanced nitric oxide signaling, offering a plausible intervention strategy.
journal_name
Sci Advjournal_title
Science advancesauthors
Botting KJ,Skeffington KL,Niu Y,Allison BJ,Brain KL,Itani N,Beck C,Logan A,Murray AJ,Murphy MP,Giussani DAdoi
10.1126/sciadv.abb1929subject
Has Abstractpub_date
2020-08-19 00:00:00pages
eabb1929issue
34issn
2375-2548pii
abb1929journal_volume
6pub_type
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