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- W2078587582 abstract "Several studies reported that the levels of proinflammatory cytokines such as TNF-alpha, IL-1beta, IL-6, and IL-8 are elevated in the cerebrospinal fluid (CSF) of patients after subarachnoid hemorrhage (SAH). Cytokines in CSF may contribute to the development of vasospasm and cerebral ischemia. In the present study, we investigated the possible cytotoxic effects of these cytokines on cultured cerebral microvascular endothelial cells.The effects of TNF-alpha, IL-1beta, IL-6, and IL-8 were tested using cell viability assay, DNA fragmentation analysis (DNA laddering), Western blot analysis (Anti-poly-(ADP-ribose) polymerase [PARP] antibody), and caspase-3 activity.TNF-alpha and IL-1beta, but not IL-6 or IL-8, caused cell detachment in a dose-dependent manner (p<0.05). TNF-alpha (200 pg/ml) and IL-1beta (150 pg/ml) produced DNA ladders at 24-72 h. TNF-alpha but not IL-1beta cleaved the PARP from 116- to 85-kDa fragments and enhanced caspase-3 activity at 24-72 h after incubation with endothelial cells. Caspase-3 inhibitor at 10 micromol/l significantly prevented TNF-alpha-induced cell detachment (p<0.05).TNF-alpha induces apoptosis in cultured cerebral endothelial cells through the cleavage of caspase-3. IL-1beta decreases the adherent cells, produces DNA ladders, but fails to cleave PARP or increase caspase-3 activity. IL-1beta may induce apoptosis in cerebral endothelial cells through different pathway from that of TNF-alpha." @default.
- W2078587582 created "2016-06-24" @default.
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- W2078587582 creator A5034733952 @default.
- W2078587582 creator A5061787763 @default.
- W2078587582 date "2003-11-01" @default.
- W2078587582 modified "2023-09-23" @default.
- W2078587582 title "Cytotoxicity of cytokines in cerebral microvascular endothelial cell" @default.
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- W2078587582 doi "https://doi.org/10.1016/s0006-8993(03)03450-4" @default.
- W2078587582 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/14568339" @default.
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