| Literature DB >> 16890031 |
Katie A Burren1, Kevin Mills, Andrew J Copp, Nicholas D E Greene.
Abstract
The potential importance of the methylation cycle during embryonic development necessitates the establishment of methodology to detect alterations in the relative abundance of s-adenosylmethionine (SAM) and s-adenosylhomocysteine (SAH) in an embryonic experimental system. We have developed a precise and sensitive method for measurement of SAM and SAH based on liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) in single neurulation-stage mouse embryos. Use of a penta-fluorinated high-performance liquid chromatography (HPLC) stationary phase gave enhanced sensitivity due to optimal ionisation in organic mobile phase and increased retention time compared to standard reversed-phase separation. Calibration curves suitable for the analysis of neurulation-stage mouse embryos (SAM 0.02-25.0microM, SAH 0.01-10.0microM) were linear (r(2)>0.997) with limits of detection for SAM and SAH of 10 and 2.5nmol/L, respectively.Entities:
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Year: 2006 PMID: 16890031 DOI: 10.1016/j.jchromb.2006.07.012
Source DB: PubMed Journal: J Chromatogr B Analyt Technol Biomed Life Sci ISSN: 1570-0232 Impact factor: 3.205