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Newby, C.S. et al.

Rapid simultaneous analysis of prostaglandin E2, 12-hydroxyeicosatetraenoic acid and arachidonic acid using high performance liquid chromatography/electrospray ionization mass spectrometry.

Arachidonic acid (AA) can be metabolized to a variety of lipid mediators including prostaglandins (PGE), and hydroxyeicosatetraenoic acids (HETE) by cyclooxygenase, lipoxygenase and cytochrome P450-dependent monooxygenase enzymatic pathways. Traditional experimental procedures to quantify these lipid mediators require purification, often by high performance liquid chromatography (HPLC), prior to derivatization for gas chromatography/ mass spectrometry (GC/MS) analysis. This paper describes a rapid and simple technique for the simultaneous quantitative analysis of PGE2, 12-HETE, and AA by HPLC/electrospray ionization mass spectrometry on cultured human dermal fibroblast supernatants. Extension of the method to analyse 5-HETE and 15-HETE was investigated. The advantages of this method include minimal sample preparation and elimination of the problem associated with thermal stability for GC/MS analysis. A detection limit of 20pg on column for PGE2 and 5pg on column for 12-HETE and AA was determined.[1]

References

Rapid simultaneous analysis of prostaglandin E2, 12-hydroxyeicosatetraenoic acid and arachidonic acid using high performance liquid chromatography/electrospray ionization mass spectrometry. Newby, C.S., Mallet, A.I. Rapid Commun. Mass Spectrom. (1997) [Pubmed]

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