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- W2168291207 abstract "The intracellular pH (pHi) of a series of cancer cell lines was determined using the pH-sensitive indicators imidazole (Im) or histidine (His) and diffusion-weighted (DW) proton NMR spectroscopy. The DW method allows the observation at high magnetic field gradient values of only the slow-moving (intracellular) components, thus ensuring complete separation between intra- and extracellular components. Using the chemical shift difference (deltadelta) between the imidazole ring C2-H and C4(5)-H peaks, we were able to measure the pHi independently of chemical shift standardization. With His, the cell lines gave pHi values of approximately 6.5-7.0, whereas with Im, a second, more acidic compartment (pHi = 5.5-5.8) was also observed. An inverse correlation was also found between pHi and the intracellular lactate concentration. This method may be applicable to in vivo pH determinations." @default.
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- W2168291207 date "2004-01-01" @default.
- W2168291207 modified "2023-09-26" @default.
- W2168291207 title "Determination of intracellular pH and compartmentation using diffusion-weighted NMR spectroscopy with pH-sensitive indicators" @default.
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- W2168291207 doi "https://doi.org/10.1002/mrm.20034" @default.
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