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• W2034120840 abstract "Pulsed field-gradient spin-echo (PGSE) NMR spectroscopy via q-space plots can characterize erythrocyte shapes and their evolution. The present study employed PGSE NMR to investigate shape reversion from advanced echinocytic to normal discocytic shapes due to depletion and then readdition of Mg2+. In q-space plots of the data, the diffusion-diffraction minima disappeared for Mg2+-depleted erythrocytes and reappeared during the shape recovery process, but with lower definition than for control cells. Shape estimates from PGSE NMR spectra and light microscopy were in excellent agreement after application of a scaling/correction factor. 31P NMR was used to probe the biochemical processes activated in erythrocytes after depletion or addition of Mg2+; it showed the activation of the nonoxidative part of the pentose phosphate pathway. Experimental conditions were optimized to bypass this pathway without any influence on the q-space plots. The release of choline from phosphatidylcholine in the outer leaflet of the plasma membrane of the cells, observed using 1H spin-echo NMR, showed a higher rate for shape-recovered than for control cells. This points to a change in phospholipid asymmetry in the plasma membrane. This variation in asymmetry affected the mean cell shape and hence influenced the average alignment of the erythrocytes with the static magnetic field and so affected the shapes of the q-space plots. Magn Reson Med, 2010. © 2010 Wiley-Liss, Inc." @default.
• W2034120840 created "2016-06-24" @default.
• W2034120840 creator A5037325780 @default.
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• W2034120840 date "2010-08-25" @default.
• W2034120840 modified "2023-10-17" @default.
• W2034120840 title "Erythrocyte shape reversion from echinocytes to discocytes: Kinetics via fast-measurement NMR diffusion-diffraction" @default.
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• W2034120840 doi "https://doi.org/10.1002/mrm.22457" @default.
• W2034120840 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20806372" @default.
• W2034120840 hasPublicationYear "2010" @default.
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