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최미화(Mi-Hwa Choi),최경미(Kyeong-Mi Choi),지소영(So-Young Ji),이윤선(Youn-Sun Lee),조주현(Ju-Hyun Cho),이용문(Yong-Moon Lee),윤여표(Yeo-Pyo Yun),유환수(Hwan-Soo Yoo) 대한약학회 2010 약학회지 Vol.54 No.5
Glycosphingolipids are structural components of mammalian cell membranes and are involved in essential cellular physiology such as cell-cell interaction, recognition, transmembrane signaling, proliferation and cell death. In this study, the simple quantitative method of monoglycoceramides-containing glucosylceramide and galactosylceramide was developed. The glycosylceramides extracted from culture cells and rat plasma were resolved by TLC, deacylated by SCDase and analyzed by HPLC-fluorescence detector at an excitation wavelength of 340 nm and an emission wavelength of 455 nm. Limit of detection was approximately 0.1 pmol and limit of quantification was about 1 pmol for both monoglycoceramide standards. The recoveries of standard glucosylceramides from intra- and inter-day assays were 113.8 and 88.8% and those of galactosylceramides were 110.7 and 123.9%, respectively. The monoglycoceramide contents of SW-620 cells and rat plasma were 141.5±5 pmol/1×106 cells and 3.9±0.3 μM, respectively. The present analytical method provides a reproducible quantification and total content of monoglycoceramide which may be as a potential biomarker for lipid imbalance-related human diseases.