Abstract：
:Cerebral aneurysms are abnormal focal dilatations of arterial vessel walls with pathological vessel structure alterations. Sudden rupture can lead to a subarachnoid hemorrhage, which is associated with a high mortality. Therefore, the origin of cerebral aneurysms as well as the progression to the point of rupture needs to be further investigated. Label-free multimodal multiphoton microscopy (MPM) was performed on resected human aneurysm domes and integrated three modalities: coherent anti-Stokes Raman scattering, endogenous two-photon fluorescence and second harmonic generation. We showed that MPM is a completely label-free and real-time powerful tool to detect pathognomonic histopathological changes in aneurysms, e.g. thickening and thinning of vessel walls, intimal hyperplasia, intra-wall haemorrhage, calcification as well as atherosclerotic changes. In particular, the loss or fragmentation of elastin as well as fibromatous wall remodelling appeared very distinct. Remarkably, cholesterol and lipid deposits were clearly visible in the multiphoton images. MPM provides morphological and biochemical information that are crucial for understanding the mechanisms of aneurysm formation and progression.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Sehm T,Uckermann O,Galli R,Meinhardt M,Rickelt E,Krex D,Schackert G,Kirsch Mdoi
10.1038/s41598-020-69222-5subject
Has Abstractpub_date
2020-07-23 00:00:00pages
12359issue
1issn
2045-2322pii
10.1038/s41598-020-69222-5journal_volume
10pub_type
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