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Medin aggregation causes cerebrovascular dysfunction in aging wild-type mice

Degenhardt, K; Wagner, J; Skodras, A; Candlish, M; Koppelmann, AJ; Wild, K; Maxwell, R; ... Neher, JJ; + view all (2020) Medin aggregation causes cerebrovascular dysfunction in aging wild-type mice. Proceedings of the National Academy of Sciences of the United States of America , 117 (38) pp. 23925-23931. 10.1073/pnas.2011133117. Green open access

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Abstract

Medin is the most common amyloid known in humans, as it can be found in blood vessels of the upper body in virtually everybody over 50 years of age. However, it remains unknown whether deposition of Medin plays a causal role in age-related vascular dysfunction. We now report that aggregates of Medin also develop in the aorta and brain vasculature of wild-type mice in an age-dependent manner. Strikingly, genetic deficiency of the Medin precursor protein, MFG-E8, eliminates not only vascular aggregates but also prevents age-associated decline of cerebrovascular function in mice. Given the prevalence of Medin aggregates in the general population and its role in vascular dysfunction with aging, targeting Medin may become a novel approach to sustain healthy aging.

Type: Article
Title: Medin aggregation causes cerebrovascular dysfunction in aging wild-type mice
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1073/pnas.2011133117
Publisher version: https://doi.org/10.1073/pnas.2011133117
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: MFG-E8, Medin, aging, amyloid, cerebrovascular dysfunction
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 Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases
URI: https://discovery.ucl.ac.uk/id/eprint/10114305
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