Abstract
The present study is concerned with the metabolic fate of palmitate, oleate and linoleate in isolated rat lung type II cells. The cells readily oxidize the exogenously supplied fatty acids to CO2 and incorporate them into lipids. The distribution between the pathways of oxidation and esterification is similar for saturated and unsaturated fatty acids. The majority of the fatty acids taken up by the cells is utilized for lipid synthesis. The fatty acids are incorporated preferentially into phospholipids, particularly into phosphatidylcholine. Addition of unsaturated fatty acids decreases the utilization of palmitate by type II cells. The distribution of palmitate between oxidation and esterification is not altered in the presence of unsaturated fatty acids. Addition of carnitine stimulates the fatty acid oxidation and decreases the esterification of fatty acids.
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