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1H-NMR spectroscopy has been used to quantify squalene in meibum and sebum. Squalene has many beneficial properties and its loss on the surface of skin upon ultraviolet light exposure or in the tear film with dry eye could be detrimental. In this study, we confirm the NMR proton resonance assignments of squalene, squalene in human meibum, and in human eyelid lipid using heteronuclear single quantum...
Lipid compositional changes in lens epithelial cells (HLE B-3) grown in a hyperoxic atmosphere were studied to determine if oxidation could cause changes in the amount and type of phospholipid similar to those found in vivo with age and cataract. The phosphatidylcholines in HLE B-3 cells were 8 times more unsaturated than the sphingomyelins. Cell viability was the same for cells grown for up to 48 h...
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