Gaucher disease is a
glycolipid storage disorder characterized by the accumulation of
glucosylceramide in tissues. Using delayed extraction matrix-assisted
laser desorption ionization time-of-flight mass spectrometry (DE MALDI-TOF-MS), we analyzed
sphingolipids in vitreous bodies from a patient with
Gaucher disease who suffered from vitreous opacities. Crude
lipids were extracted from the freeze-dried vitreous bodies with
chloroform and
methanol. After mild alkaline treatment of the crude
lipids, a
sphingolipid fraction was prepared and analyzed by DE MALDI-TOF-MS. The results were as follows: (a). the m/z values of the
ions found in the mass spectra for both the control and the
Gaucher disease patient corresponded to different
sphingomyelin species. (b). The mass spectrum of the
Gaucher disease patient showed additional
ions with m/z values corresponding to different
ceramide monohexoside (CMH) species. It was indicated that the accumulation of CMH in vitreous bodies from
Gaucher disease patients could be easily detected with the DE MALDI-TOF-MS method.