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Genetic and functional insights into the fractal structure of the heart

Meyer, HV; Dawes, TJW; Serrani, M; Bai, W; Tokarczuk, P; Cai, J; de Marvao, A; ... O'Regan, DP; + view all (2020) Genetic and functional insights into the fractal structure of the heart. Nature , 584 (7822) pp. 589-594. 10.1038/s41586-020-2635-8. Green open access

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Abstract

The inner surfaces of the human heart are covered by a complex network of muscular strands that is thought to be a remnant of embryonic development. The function of these trabeculae in adults and their genetic architecture are unknown. Here we performed a genome-wide association study to investigate image-derived phenotypes of trabeculae using the fractal analysis of trabecular morphology in 18,096 participants of the UK Biobank. We identified 16 significant loci that contain genes associated with haemodynamic phenotypes and regulation of cytoskeletal arborization. Using biomechanical simulations and observational data from human participants, we demonstrate that trabecular morphology is an important determinant of cardiac performance. Through genetic association studies with cardiac disease phenotypes and Mendelian randomization, we find a causal relationship between trabecular morphology and risk of cardiovascular disease. These findings suggest a previously unknown role for myocardial trabeculae in the function of the adult heart, identify conserved pathways that regulate structural complexity and reveal the influence of the myocardial trabeculae on susceptibility to cardiovascular disease.

Type: Article
Title: Genetic and functional insights into the fractal structure of the heart
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41586-020-2635-8
Publisher version: https://doi.org/10.1038/s41586-020-2635-8
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Cardiovascular genetics, Genome-wide association studies, Heart failure, Magnetic resonance imaging
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Health Informatics
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Health Informatics > Infectious Disease Informatics
URI: https://discovery.ucl.ac.uk/id/eprint/10110799
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