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- W3208481037 abstract "Connexin 43 (Cx43) is expressed in kidneys and constitutes a feedforward mechanism leading to inflammation in other tissues where they form hemichannels and gap junction channels. However, the possible functional relationship between these membrane channels and their role in damaged renal cells remains unknown. Here, analyses of ethidium uptake and thiobarbituric acid reactive species revealed that TNF-α plus IL-1β increase Cx43 hemichannel activity and oxidative stress in MES-13 cells, a cell line derived from mesangial cells. The latter also was accompanied by a reduction in gap junctional communication, whereas western blotting analysis showed a progressive increase of phosphorylated MYPT (a substrate of RhoA/ROCK) and Cx43 upon TNF-α/IL-1β treatment. Additionally, inhibition of RhoA/ROCK strongly diminished the TNF-α/IL-1β-induced activation of Cx43 hemichannels and reduction in gap junctional coupling. We propose that activation of Cx43 hemichannels and inhibition of cell coupling during pro-inflammatory conditions could contribute to oxidative stress and damage of mesangial cells via the RhoA/ROCK pathway." @default.
- W3208481037 created "2021-11-08" @default.
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- W3208481037 date "2021-10-29" @default.
- W3208481037 modified "2023-10-18" @default.
- W3208481037 title "TNF-α plus IL-1β Induces Opposite Regulation of Hemichannels and Gap Junctions in Mesangial Cells Through a RhoA/ROCK-dependent Pathway" @default.
- W3208481037 doi "https://doi.org/10.20944/preprints202110.0455.v1" @default.
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