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Evidence of amyloid-β cerebral amyloid angiopathy transmission through neurosurgery

Z. Jaunmuktane,A. Quaegebeur,R. Taipa,M. Viana-Baptista,Raquel Barbosa,C. Koriath,R. Sciot,S. Mead,S. Brandner

Published 2018 in Acta Neuropathologica

ABSTRACT

Amyloid-β (Aβ) is a peptide deposited in the brain parenchyma in Alzheimer’s disease and in cerebral blood vessels, causing cerebral amyloid angiopathy (CAA). Aβ pathology is transmissible experimentally in animals and through medical procedures in humans, such as contaminated growth hormone or dura mater transplantation in the context of iatrogenic prion disease. Here, we present four patients who underwent neurosurgical procedures during childhood or teenage years and presented with intracerebral haemorrhage approximately three decades later, caused by severe CAA. None of these patients carried pathogenic mutations associated with early Aβ pathology development. In addition, we identified in the literature four patients with a history of neurosurgical intervention and subsequent development of CAA. These findings raise the possibility that Aβ pathology may be transmissible, as prion disease is, through neurosurgical procedures.

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