19F-nuclear magnetic resonance: measurements of [O2] and pH in biological systems.
19F-nuclear magnetic resonance: measurements of [O2] and pH in biological systems.
复制标题
19F-核磁共振:测量生物系统中的 [O2] 和 pH 值。
DOI:
10.1016/s0006-3495(88)83084-4
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发表时间:
1988
影响因子:
3.4
通讯作者:
Deutsch,C
中科院分区:
文献类型:
--
作者:
Taylor,J;Deutsch,C
19F-nuclear magnetic resonance (NMR) has been used to determine both intracellular pH and oxygen concentrations in cell suspensions. Oxygen concentrations in Paracoccus denitrificans and insulinoma cells, RINm5F, in the NMR probe can be monitored directly by 1/T1 measurements of perfluorotripropylamine (FTPA)/lecithin emulsion added to the suspensions. With FTPA oxygen monitoring, we investigated the relative aeration capabilities of two types of NMR chambers. Both normal and transformed eucaryotic cells can be maintained in either chamber for at least 1–2 h at cytocrits of up to 20–25%, with 30% oxygen saturation and cell viabilities of 90–95%. Similar concentrations of procaryotes were maintained aerobic with high FTPA concentrations in the more efficient of the two NMR chambers. A new precursor molecule for the 19F-NMR pH indicator difluoromethylalanine, the para-chlorophenyl ester, has been tested and used in RINm5F cells and P. denitrificans, neither of which hydrolyzes methyl esters.
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影响因子:
5.2
作者:
S. M. Cohen
通讯作者:
S. M. Cohen
影响因子:
3.7
作者:
C. Deutsch;M. Price;C. Johansson
通讯作者:
C. Johansson
影响因子:
4
作者:
J. Metcalfe;T. Hesketh;G. Smith
通讯作者:
G. Smith
DOI:
--
发表时间:
1979
期刊:
影响因子:
--
作者:
R. Shulman
通讯作者:
R. Shulman
影响因子:
3.4
作者:
Taylor,JS;Deutsch,C
通讯作者:
Deutsch,C