## Abstract ^31^P NMR spectra obtained __in vivo__ reveal the presence of a few reasonably well defined chemical species, namely, ATP, orthophosphate (P~i~), and, in brain, phosphocreatine. The chemical shifts of these resonances respond to changes in concentrations of ions such as H^+^ and Mg^2+^
In vivo [31P]NMR assessment of early hepatocellular dysfunction during endotoxemia
β Scribed by Marilyn E. Pelias; Michael C. Townsend
- Book ID
- 116010964
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 552 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0022-4804
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## Abstract Previous __in vivo__ studies have demonstrated that Ξ±, Ξ². and Ξ³ ATP chemical shifts measured by ^31^P NMR spectroscopy can be used to determine intracellular magnesium in erythrocytes, but up to now such results have not been confirmed in striated muscle __in vivo.__ We report __BATP__
Prior in vitro studies, utilizing 31P nuclear magnetic resonance (31P NMR) to measure the chemical shift (sigma) of beta-ATP and lengthening of the phosphocreatine spin-spin (T2) relaxation time, suggested an assessment of their efficacy in measuring magnesium depletion in vivo. Dietary magnesium de
During the development of acute hepatic encephalopathy, induced by acute liver ischemia, changes in brain 31P NMR spectra and EEG spectra were studied over 8:45 h in eight rats. At the end of this period the brain amino acid concentrations were determined. The results were compared with the same mea