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- W1966892108 abstract "pH sensors were fabricated by anodically electrodepositing iridium oxide films (AEIROFs) onto microelectrodes on chips and coated with poly(ethyleneimine) (PEI) for mechanical stability. These demonstrate super-Nernstian response to pH from pH 4.0 to 7.7 in chloride-free phosphate buffer. The surface of the chip was coated with fibronectin for the attachment of porcine aortic endothelial cells (PAECs). The working capability of the pH sensor for monitoring acute local pH changes was investigated by stimulating the PAECs with thrombin. Our results show that thrombin induced acute extracellular acidification of PAECs and dissolution of fibronectin, causing the local pH to decrease. The use of PD98059, a mitogen-activated protein kinase (MAPK) inhibitor, reduced extracellular acidification and an increase in local pH was observed. This study shows that our pH sensors can facilitate the investigation of acute cellular responses to stimulation by monitoring the real-time, local pH changes of cells attached to the sensors." @default.
- W1966892108 created "2016-06-24" @default.
- W1966892108 creator A5062807618 @default.
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- W1966892108 date "2015-01-01" @default.
- W1966892108 modified "2023-09-23" @default.
- W1966892108 title "An iridium oxide microelectrode for monitoring acute local pH changes of endothelial cells" @default.
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- W1966892108 doi "https://doi.org/10.1039/c5an00377f" @default.
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