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- W1567317153 abstract "J. Neurochem. (2010) 115, 1434–1444. Abstract Brain injury caused by ischemia is a major cause of human mortality and physical/cognitive disability worldwide. Experimentally, brain ischemia can be induced surgically by permanent middle cerebral artery occlusion. Using this model, we studied the influence of transthyretin in ischemic stroke. Transthyretin (TTR) is normally responsible for the transport of thyroid hormones and retinol in the blood and CSF. We found that TTR null mice (TTR−/−) did not show significant differences in cortical infarction 24 h after permanent middle cerebral artery occlusion compared with TTR+/+ control littermates. However, TTR null mice, heterozygous for the heat-shock transcription factor 1 (TTR−/−HSF1+/− mice), which compromised the stress response, showed a significant increase in cortical infarction, cerebral edema and the microglial-leukocyte response compared with TTR+/+HSF1+/− mice. Unexpectedly, we observed novel TTR distribution throughout the infarct, localized to disintegrated β-tubulin III+ neurons and cell debris. Specific elimination of TTR synthesis in the liver by RNAi had no effect on TTR distribution in the infarct, indicating that the observed TTR infiltration derived from CSF and not from the serum. This finding is corroborated by results from ‘in situ’ hybridization and real time PCR that excluded the presence of transthyretin mRNA in the infarct and peri-infarct areas. Our data suggest that in conditions of a compromised heat-shock response, CSF TTR contributes to control neuronal cell death, edema and inflammation, thereby influencing the survival of endangered neurons in cerebral ischemia." @default.
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- W1567317153 date "2010-11-11" @default.
- W1567317153 modified "2023-10-16" @default.
- W1567317153 title "CSF transthyretin neuroprotection in a mouse model of brain ischemia" @default.
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- W1567317153 doi "https://doi.org/10.1111/j.1471-4159.2010.07047.x" @default.
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