31P MRS analysis of the phospholipid composition of normal human peripheral blood mononuclear cells (PBMC)

The aim of this investigation was to characterize the phospholipid composition of normal human blood mononuclear cells using 31P NMR spectroscopy. Mononuclear cells of peripheral blood were obtained from 10 volunteers. Phospholipid extracts were prepared from 60x10(6) cells according to modified Fol...

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Published inCellular & molecular biology letters Vol. 10; no. 3; pp. 373 - 382
Main Authors Kuliszkiewicz-Janus, Małgorzata, Tuz, Mariusz Adam, Baczyński, Stanisław, Prajs, Iwona, Jaźwiec, Bozena
Format Journal Article
LanguageEnglish
Published England 2005
Subjects
Adult
Cardiolipins - analysis
Female
Humans
Leukocytes, Mononuclear - chemistry
Lysophosphatidylcholines - analysis
Male
Middle Aged
Nuclear Magnetic Resonance, Biomolecular
Phosphatidylcholines - analysis
Phosphatidylethanolamines - analysis
Phosphatidylinositols - analysis
Phosphatidylserines - analysis
Phospholipids - analysis
Phosphorus Isotopes
Plasmalogens - analysis
Sphingomyelins - analysis
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Summary:The aim of this investigation was to characterize the phospholipid composition of normal human blood mononuclear cells using 31P NMR spectroscopy. Mononuclear cells of peripheral blood were obtained from 10 volunteers. Phospholipid extracts were prepared from 60x10(6) cells according to modified Folch's method. An AMX 300 Bruker spectrometer 7.05 T was used. The 31P spectrum of phospholipid extracts from normal human PBMC consisted of 9 peaks, with one each for phosphatidylcholine (PC), plasmalogen of phosphatidylcholine (CPLAS), lysophosphatidylcholine (LPC), sphingomyelin (SM), phosphatidylethanolamine (PE), phosphatidylinositol (PI), phosphatidylserine (PS) and cardiolipin (CL), and another one due to the external reference substance, methylenediphosphonic acid (MDPA). The concentrations of these phospholipids (PL), based on the integral intensities, were as follows: 0.398 +/- 0.078 mmole/l for PC; 0.033 +/- 0.019 mmole/l for CPLAS; 0.155 +/- 0.043 mmole/l for SM; 0.266 +/- 0.104 mmole/l for PI+PE; 0.101 +/- 0.040 mmole/l for PS, and 0.026 +/- 0.033 mmole/l for CL. The results of this study confirmed that 31P MRS is a convenient tool for measuring the phospholipid concentrations of biological samples.
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ISSN:1425-8153