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Identification of the peroxidation product hydroxystearic acid in Lewis lung carcinoma cells
Authors:G Cavalli  E Casali  A Spisni  L Masotti
Institution:Institute of Biological Chemistry, School of Medicine, University of Parma, Italy.
Abstract:Whole cell lipids were extracted from the Lewis lung carcinoma in vitro line C108. The fatty acids were derivatized to methylesters in order to identify endogenous oxidized derivatives by gasmass spectroscopy. The presence of 9-hydroxystearic acid and 10-hydroxystearic acid was thus evidenced for the first time in cultured mammalian cells. Moreover a linear correlation was found between the concentration of these products expressed as percentage of total fatty acid methylesters and the cell density in tissue culture flasks. This finding suggests an involvement of hydroxystearic acid in cellular functions related to the cell density in monolayer cultures.
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