|
|
|||||||||||||||
|
Cerca | Lliura | Ajuda | Servei de Biblioteques | Sobre el DDD | Català English Español | |||||||||
| Pàgina inicial > Articles > Articles publicats > Blood-brain barrier dysfunction underlying Alzheimer's disease is induced by an SSAO/VAP-1-dependent cerebrovascular activation with enhanced Aβ deposition |
| Data: | 2019 |
| Descripció: | 14 pàg. |
| Resum: | Dysfunctions of the vascular system directly contribute to the onset and progression of Alzheimer's disease (AD). The blood-brain barrier (BBB) shows signs of malfunction at early stages of the disease. When Abeta peptide (Aβ) is deposited on brain vessels, it induces vascular degeneration by producing reactive oxygen species and promoting inflammation. These molecular processes are also related to an excessive SSAO/VAP-1 (semicarbazide-sensitive amine oxidase) enzymatic activity, observed in plasma and in cerebrovascular tissue of AD patients. We studied the contribution of vascular SSAO/VAP-1 to the BBB dysfunction in AD using in vitro BBB models. Our results show that SSAO/VAP-1 expression is associated to endothelial activation by altering the release of pro-inflammatory and pro-angiogenic angioneurins, most highly IL-6, IL-8 and VEGF. It is also related to a BBB structure alteration, with a decrease in tight-junction proteins such as zona occludens or claudin-5. Moreover, the BBB function reveals increased permeability and leukocyte adhesion in cells expressing SSAO/VAP-1, as well as an enhancement of the vascular Aβ deposition induced by mechanisms both dependent and independent of the enzymatic activity of SSAO/VAP-1. These results reveal an interesting role of vascular SSAO/VAP-1 in BBB dysfunction related to AD progression, opening a new window in the search of alternative therapeutic targets for fighting AD. |
| Ajuts: | Ministerio de Economía y Competitividad SAF2014-59697-R Agencia Estatal de Investigación SAF2017-89271-R Ministerio de Sanidad y Consumo CB06/05/0042 Fundació la Marató de TV3 2014-3610 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-1231 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-0984 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Alzheimer's disease (AD) ; Angioneurins ; Blood-brain barrier (BBB) ; Neurovascular unit (NVU) ; Semicarbazide-sensitive amine oxidase (SSAO/VAP-1) |
| Publicat a: | Biochimica et Biophysica Acta - Molecular Basis of Disease, Vol. 1865 Núm. 9 (2019) , p. 2189-2202, ISSN 1879-260X |
44 p, 1.8 MB |