bioRxiv : the preprint server for biology · 2024
Carbonic anhydrase inhibitors prevent presymptomatic capillary flow disturbances in a model of cerebral amyloidosis.
СтатьяПрепринтНазвание и аннотация: Перевод в очереди
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Gutiérrez-Jiménez Eugenio, Rasmussen Peter Mondrup, Mikkelsen Irene Klærke, Kura Sreekanth, Fruekilde Signe K, Hansen Brian, Bordoni Luca, Carlsen Jasper, Palmfeldt Johan, Boas David A, Sakadžić Sava, Vinogradov Sergei, Khatib Mirna El, Ramos-Cejudo Jaime, Wied Boris, Leduc-Galindo Desiree, Canepa Elisa, Mar Adam C, Gamallo-Lana Begona, Fossati Silvia, Østergaard Leif
Аннотация
INTRODUCTION: Disturbances in microvascular flow dynamics are hypothesized to precede the symptomatic phase of Alzheimer's disease (AD). However, evidence in presymptomatic AD remains elusive, underscoring the need for therapies targeting these early vascular changes.
METHODS: We employed a multimodal approach, combining in vivo optical imaging, molecular techniques, and ex vivo MRI, to investigate early capillary dysfunction in Tg-SwDI mice without memory impairment. We also assessed the efficacy of carbonic anhydrase inhibitors (CAIs) in preventing capillary flow disturbances.
RESULTS: Our study revealed capillary flow disturbances associated with alterations in capillary morphology, adhesion molecule expression, and Amyloid-β (Aβ) load in 9-10-month-old Tg-SwDI mice without memory impairment. CAI treatment ameliorated these capillary flow disturbances, enhanced oxygen availability, and reduced Aβ load.
DISCUSSION: These findings underscore the importance of capillary flow disturbances as early biomarkers in presymptomatic AD and highlight the potential of CAIs for preserving vascular integrity in the early stages of AD.
METHODS: We employed a multimodal approach, combining in vivo optical imaging, molecular techniques, and ex vivo MRI, to investigate early capillary dysfunction in Tg-SwDI mice without memory impairment. We also assessed the efficacy of carbonic anhydrase inhibitors (CAIs) in preventing capillary flow disturbances.
RESULTS: Our study revealed capillary flow disturbances associated with alterations in capillary morphology, adhesion molecule expression, and Amyloid-β (Aβ) load in 9-10-month-old Tg-SwDI mice without memory impairment. CAI treatment ameliorated these capillary flow disturbances, enhanced oxygen availability, and reduced Aβ load.
DISCUSSION: These findings underscore the importance of capillary flow disturbances as early biomarkers in presymptomatic AD and highlight the potential of CAIs for preserving vascular integrity in the early stages of AD.