Quantitative Method for the Profiling of the Endocannabinoid Metabolome by LC-Atmospheric Pressure Chemical Ionization-MS
作者:John Williams、JodiAnne Wood、Lakshmipathi Pandarinathan、David A. Karanian、Ben A. Bahr、Paul Vouros、Alexandros Makriyannis
DOI:10.1021/ac0624086
日期:2007.8.1
The endocannabinoid system's biological significance continues to grow as novel endocannabinoid metabolites are discovered. Accordingly, a myopic view of the system that focuses solely on one or two endocannabinoids, such as anandamide or 2-arachidonoyl glycerol, is insufficient to describe the biological responses to perturbations of the system. Rather, the endocannabinoid metabolome as a whole must be analyzed. The work described here is based on liquid chromatography coupled with atmospheric pressure chemical ionization mass spectrometry. This method has been validated to quantify, in a single chromatographic run, the levels of 15 known or suspected metabolites of the endocannabinoid system in the rat brain and is applicable to other biological matrixes. We have obtained an endocannabinoid profile specifically for the frontal cortex of the rat brain and have determined anandamide level differences following the administration of the fatty acid amide hydrolase inhibitor AM374.
内源性大麻素系统的生物学重要性随着新型内源性大麻素代谢物的发现而不断增长。因此,单纯关注一种或两种内源性大麻素(如大麻二酚或2-花生四烯酸甘油酯)的狭隘观点不足以描述系统扰动引起的生物反应。相反,必须分析内源性大麻素代谢组作为一个整体。此处描述的工作基于与大气压力化学电离质谱联用的液相色谱法。该方法已被验证可以在一次色谱运行中定量测定大鼠脑内15种已知或嫌疑的内源性大麻素代谢物的水平,并且适用于其他生物基质。我们获得了大鼠脑额叶特定的内源性大麻素谱,并在给予脂肪酸酰胺水解酶抑制剂AM374后,确定了大麻二酚水平的差异。