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- W1505661009 abstract "Abstract High mobility group box 1 (HMGB1) plays an important role in the pathologic processes of endothelial permeability under oxidative stress. Trophoblast oxidative stress has been implicated in the pathophysiology of preeclampsia (PE). HMGB1 serum levels are increased in PE. However, the potential roles of HMGB1 in endothelial permeability in PE remain unclear. We assessed the effects of the hypoxic trophoblast on the permeability of the endothelial monolayer. Our results showed that the hypoxic trophoblast displayed higher HMGB1 mRNA, intracellular HMGB1 protein, and HMGB1 in conditioned medium than those of the normoxic trophoblast did. The hypoxic trophoblast conditioned medium increased the endothelial monolayer permeability and increased TLR 4 and caveolin-1 (CAV-1) protein expression in endothelial cells, which was inhibited by glycyrrhizic acid and HMGB1 small interfering RNA transfection to trophoblasts before hypoxia. The increased endothelial permeability induced by hypoxic trophoblast conditioned medium could be inhibited with TLR4 or CAV-1 gene silencing in endothelial cells. Immunoprecipitation showed that CAV-1 and TLR4 are colocalized in HUVECs and C57BL/6 mouse kidney. TLR4 small interfering RNA suppressed CAV-1 protein expression in endothelial cells upon stimulation of hypoxic trophoblast conditioned medium or HMGB1. We conclude that hypoxic trophoblasts play an important role in the mechanism of general edema (including protein urine) in PE via increasing endothelial monolayer permeability through the HMGB1/TLR4/CAV-1 pathway." @default.
- W1505661009 created "2016-06-24" @default.
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- W1505661009 date "2014-11-15" @default.
- W1505661009 modified "2023-09-26" @default.
- W1505661009 title "Hypoxic Trophoblast HMGB1 Induces Endothelial Cell Hyperpermeability via the TRL-4/Caveolin-1 Pathway" @default.
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- W1505661009 doi "https://doi.org/10.4049/jimmunol.1303445" @default.
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