The parotid gland stone matrix constitutes 20.2% of the stone dry weight and contains 8.5% of lipids. Of the total lipids, 74% are represented by neutral lipids, 17% by glycolipids, and 9% by phospholipids. The neutral lipids exhibit a high content of free fatty acids (52.7%) and cholesteryl esters (31.1%). The glycolipids are composed of simple glycosphingolipids (7.1%), and of neutral and sulfated glyceroglucolipids (92.9%). Phosphatidylethanolamine and diphosphatidylglycerol are the principal constituents of the phospholipid fraction.
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Slomiany, A. ; Yano, S.; Slomiany, B.L.; and Glass, G.B.J.: Lipid Composition of the Gastric Mucous Barrier in the Rat, J Biol Chem253:3785-3791, 1978.
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Bhandaru, R.R. ; Srinivasan, S.R.; Pargaonkar, P.S.; and Berenson , G.S.: A Simplified Colorimetric Micro-method for Determination of Serum Cholesterol, Lipids12: 1078-1080, 1977.
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Lowry, R.R. and Tinsley, I.J.: A Simple Sensitive Method for Lipid Phosphorus , Lipids9:491-492, 1974.
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MANDEL, I.D.: Human Submaxillary, Sublingual, and Parotid Glycoproteins and Enamel Pellicle. In: The Glycoconjugates, Vol. I, Horowitz, M.I. and Pigman, W., Eds., New York: Academic Press, 1977, pp. 153-179 .
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Slomiany, B.L. ; Murty, V.L.N.; Aono, M.; Slomiany, A.; and Mandel, I.D.: Lipid Composition of Human Parotid and Submandibular Saliva from Caries-Resistant and Caries-Susceptible Adults, Arch Oral Biol27:803-808, 1982.
