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2019-06-21

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cc-by (c) García Canadilla, Patricia et al., 2019
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/175590

Structural coronary artery remodelling in the rabbit fetus as a result of intrauterine growth restriction

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https://doi.org/10.1371/journal.pone.0218192

Abstract

Intrauterine growth restriction (IUGR) is a fetal condition that affects up to 10% of all pregnancies and is associated with cardiovascular structural and functional remodelling that persists postnatally. Some studies have reported an increase in myocardial coronary blood flow in severe IUGR fetuses which has been directly associated to the dilatation of the coronary arteries. However, a direct measurement of the coronaries' lumen diameter in IUGR has not been reported before. The aim of this paper is to perform, for the first time, a quantitative analysis of the effects of IUGR in cardiac geometry and coronary vessel size in a well-known rabbit model of IUGR using synchrotron-based X-ray Phase Contrast Tomography Imaging (X-PCI). Eight rabbit fetal hearts were imaged non-destructively with X-PCI. 3D reconstructions of the coronary arterial tree were obtained after semi-automatic image segmentation. Different morphometric features including vessel lumen diameter of the three main coronaries were automatically quantified. IUGR fetuses had more globular hearts and dilated coronary arteries as compared to controls. We have quantitatively shown that IUGR leads to structural coronary vascular tree remodelling and enlargement as an adaptation mechanism in response to an adverse environment of restricted oxygen and nutrients and increased perfusion pressure.

Subject

Artèries coronàries, Fetus, Animals de laboratori

Subject (English)

Coronary arteries, Fetus, Laboratory animals

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Articles publicats en revistes (Cirurgia i Especialitats Medicoquirúrgiques)
Articles publicats en revistes (BCNatal Fetal Medicine Research Center)
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)

Citation

GARCÍA CANADILLA, Patricia, et al. Structural coronary artery remodelling in the rabbit fetus as a result of intrauterine growth restriction. PLoS One. 2019. Vol. 14, num. 6, pags. e0218192. ISSN 1932-6203. [consulted: 12 of August of 2026]. Available at: https://hdl.handle.net/2445/175590

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