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• W4386002489 startingPage "114508" @default.
• W4386002489 abstract "Intracerebral hemorrhage (ICH) is one of the stroke subtypes with the highest mortality. Secondary brain injury is associated with neurological dysfunction and poor prognosis after ICH. Caveolin-1 (CAV1) is the key protein of Caveolae. Previous studies have shown that CAV1 plays an important role in central nervous system diseases, and pointed out that in a collagenase-induced ICH model in vivo, CAV1 is associated with neuroinflammatory activation and poor neurological prognosis. In this study, we explore the role and the molecular mechanism of CAV1 in brain injury via a rat autologous whole blood injection model and an in vitro model of ICH. Adult male Sprague-Dawley rats ICH model was induced through autologous whole blood injecting into the right basal ganglia. The changes in protein levels of CAV1 in brain tissues of ICH rats were detected by western blot analysis. The immunofluorescent staining was used to explore the changes of CAV1 in microglia/macrophages (Iba1+ cells). Lentivirus vectors were administered by intracerebroventricular injection to induce CAV1 overexpression and knockdown respectively. The western blot analysis, immunofluorescence staining, enzyme-linked immunosorbent assay, terminal deoxynucleotidyl transferase dUTP nick end labeling and Nissl staining were performed to explore the role of CAV1 in secondary brain injury after ICH. Meanwhile, the rotarod test, foot fault test, adhesive-removal test, and Modified Garcia Test, as well as Morris Water Maze test, were performed to evaluate the behavioral cognitive impairment of ICH rats after genetic intervention. Additionally, BV-2 cells treated with oxygen hemoglobin for 24 h, were used as an in vitro model of ICH in this study to explore the molecular mechanism of CAV1 in brain injury; we performed western blot analysis after precise regulation of CAV1 in BV2 cells to observe changes in protein levels and phosphorylated levels of C-Src, IKK-β, and NF-κB. The expression of CAV1 in microglia/macrophages (Iba1+ cells) was elevated and reached the peak at 24 h after ICH. CAV1 knockdown ameliorated ICH-induced neurological deficits, while CAV1 overexpression significantly worsened neurological dysfunction of ICH rats. CAV1 knockdown attenuated cellular apoptosis and promoted neuronal survival in brain tissues of ICH rats, while the ICH rats with CAV1 overexpression presented more cellular apoptosis and neuronal loss. Meanwhile, CAV1 knockdown inhibited the microglia activation and neuroinflammatory response, while CAV1 overexpression abolished these effects and aggravated neuroinflammation in brain tissues of ICH rats. Additionally, by inducing to CAV1 knockdown in BV2 cells in an in vitro model of ICH, the levels of p-C-Src, CAV-1, p-CAV-1, and p-IKK-β in cytoplasm and the level of NF-κB p65 in nucleus of BV2 cells were significantly decreased, while they were increased by inducing to CAV1 overexpression. Our research revealed CAV1 aggravated neurological dysfunction in a rat ICH model. CAV1 knockdown exerted neuroprotective effect by suppressing microglia activation and neuroinflammation after ICH might via the C-Src/CAV1/IKK-β/NF-κB signaling pathway." @default.
• W4386002489 created "2023-08-20" @default.
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• W4386002489 date "2023-10-01" @default.
• W4386002489 modified "2023-10-14" @default.
• W4386002489 title "Caveolin-1 aggravates neurological deficits by activating neuroinflammation following experimental intracerebral hemorrhage in rats" @default.
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• W4386002489 doi "https://doi.org/10.1016/j.expneurol.2023.114508" @default.
• W4386002489 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37598879" @default.
• W4386002489 hasPublicationYear "2023" @default.
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