Isolation and partial characterization of fucose- and N-acetylglucosamine-containing neutral glycosphingolipids from human senile cataracts
作者:
TaoRobert V.P.,
KovathanaNarong,
WeiYu,
期刊:
Current Eye Research
(Taylor Available online 1982)
卷期:
Volume 2,
issue 7
页码: 427-434
ISSN:0271-3683
年代: 1982
DOI:10.3109/02713688208996345
出版商: Taylor&Francis
数据来源: Taylor
摘要:
Five neutral glycosphingolipids were isolated from human cataracts using silicic acid column chromatography and preparative thin-layer chromatography. Three of these glycolipids were partially identified by gas-liquid chromatography as glucosylceramide, lactosylceramide, and trihexosyl-ceramide. Two glucosamine-containing glycosphingolipids (one of which contained fucose) were also detected. One of these two lipids contained galactose, glucose, N-acetylglucosamine in the molar ratio of 2:1:1, while the other contained fucose, galactose, glucose, and N-acetylglucosamine with the molar ratio of 1:2:1:1. Dihydrosphingosine (sphinganine) was the major long-chain base detected in all these fractions. The fatty acids of these neutral glycosphingolipids were variable in chain length, although the majority of them were greater than 20 carbons. This represents the first time whereby a family of neutral glycosphingolipids has been detected in human cataracts. This is also the first demonstration of the existence of a neutral fucolipid in the lenses of any species.
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