Abstract
Lipids, as a broad category of cellular constituents such as carbohydrates, proteins, vitamins, hormones, and minerals, play varied and assorted roles in living organisms. Some fatty acids are used as energy sources and energy reserves—the triglycerides in adipose tissue represent the energy reserves storing fatty acids as esters and the brown adipose tissue functions to maintain body temperature. Other fatty acids are combined in covalent bonds in complex compounds which form much of the lipid portions of cellular and organelle membranes. Finally, the third major function of lipids is to provide structural elements of which myelin of nerve tissue is an excellent example. In addition, certain lipids may be viewed as vitamins (vitamins A, D, E, and essential polyunsaturated fatty acids) and as hormones (the prostaglandins, steroids, etc.).
This work was supported in part by the U.S. Public Health Service Grant NB-01575–12.
This article is not intended to be a complete review of the literature. Rather, it is an overview of the complex problem of lipid anabolism and catabolism, precursor pools and product pools, the blood-brain barrier, and their relationship to lipid turnover. Lipid turnover is reported as half-life time (<Inline>1</Inline>). The theoretical points are illustrated by selected, but not comprehensive, data from the literature.
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© 1971 Plenum Press, New York
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Burton, R.M. (1971). The Turnover of Lipids. In: Metabolic Turnover in the Nervous System. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7166-7_5
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DOI: https://doi.org/10.1007/978-1-4615-7166-7_5
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