Diethylation Labeling Combined with UPLC/MS/MS for Simultaneous Determination of a Panel of Monoamine Neurotransmitters in Rat Prefrontal Cortex Microdialysates
作者:Chengjie Ji、Wenlin Li、Xiao-dan Ren、Ayman F. El-Kattan、Rouba Kozak、Scott Fountain、Christopher Lepsy
DOI:10.1021/ac801339z
日期:2008.12.1
LC/MS/MS-based assay for simultaneous determination of biogenic monoamine neurotransmitters such as norepinephrine (NE), dopamine (DA), serotonin (5-HT), and normetanephrine (NM) in rat brain microdialysates is to improve detection sensitivity. In this work, a UPLC/ MS/MS-based method combined with a diethyl labeling technique was developed for simultaneous determination of a panel of monoamines in rat prefrontal
与基于LC / MS / MS的测定方法的开发相关的主要挑战是要同时测定大鼠中的生物型单胺神经递质,例如去甲肾上腺素(NE),多巴胺(DA),5-羟色胺(5-HT)和去甲肾上腺素(NM)脑微透析液是为了提高检测灵敏度。在这项工作中,开发了一种基于UPLC / MS / MS的方法与二乙基标记技术相结合,用于同时测定大鼠前额叶皮层微透析液中的一元胺。色谱运行时间为3.5分钟/样品。基于UPLC / MS / MS的NE,DA,5-HT /和NM方法的检测限为0.005 / 0.4(30/2367 pM),0.005 / 0.1(33 / 653 pM),0.005 / 0.2(28/1136 pM)和0.002 / 0.2 ng / mL(11/1092 pM)。在UPLC / MS / MS分析过程中,单胺氨基的二乙基标记使相应的天然单胺的检测灵敏度提高了20-100倍。这可能是由于以下原