Characterization of the rat cerebrospinal fluid proteome following acute cerebral ischemia using an aptamer-based proteomic technology
| Autor: | Simats Oriol, Alba, García-Berrocoso, Teresa, Ramiro, Laura, Giralt, Dolors, Gill, Natalia, Penalba, Anna, Bustamante, Alejandro, Rosell Novel, Anna, Montaner, Joan, Universitat Autònoma de Barcelona |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Male Proteomics Pathology medicine.medical_specialty Proteome Aptamer Ischemia lcsh:Medicine Article Brain Ischemia 03 medical and health sciences 0302 clinical medicine Cerebrospinal fluid CAMK2A Medicine Animals Humans Rats Wistar lcsh:Science Stroke Multidisciplinary business.industry lcsh:R Brain Aptamers Nucleotide medicine.disease Pathophysiology Rats 030104 developmental biology Acute Disease lcsh:Q business 030217 neurology & neurosurgery Leukocyte chemotaxis Biomarkers |
| Zdroj: | Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Scientific Reports Scientific Reports, Vol 8, Iss 1, Pp 1-14 (2018) |
| Popis: | The limited accessibility to the brain has turned the cerebrospinal fluid (CSF) into a valuable source that may contribute to the complete understanding of the stroke pathophysiology. Here we have described the CSF proteome in the hyper-acute phase of cerebral ischemia by performing an aptamer-based proteomic assay (SOMAscan) in CSF samples collected before and 30 min after male Wistar rats had undergone a 90 min Middle Cerebral Artery Occlusion (MCAO) or sham-surgery. Proteomic results indicated that cerebral ischemia acutely increased the CSF levels of 716 proteins, mostly overrepresented in leukocyte chemotaxis and neuronal death processes. Seven promising candidates were further evaluated in rat plasma and brain (CKB, CaMK2A, CaMK2B, CaMK2D, PDXP, AREG, CMPK). The 3 CaMK2 family-members and CMPK early decreased in the infarcted brain area and, together with AREG, co-localized with neurons. Conversely, CKB levels remained consistent after the insult and specifically matched with astrocytes. Further exploration of these candidates in human plasma revealed the potential of CKB and CMPK to diagnose stroke, while CaMK2B and CMPK resulted feasible biomarkers of functional stroke outcome. Our findings provided insights into the CSF proteome following cerebral ischemia and identified new outstanding proteins that might be further considered as potential biomarkers of stroke. |
| Databáze: | OpenAIRE |
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