Abstract
Iron is an integral component or an essential cofactor of several enzymes such as aconitase, catalase, cytochrome C, cytochrome C reductase, cytochrome C oxidase, formiminotransferase, monoamine oxidase, myeloperoxidase, peroxidase, ribonucleotidyl reductase, succinic dehydrogenase, tyrosine hydroxylase, tryptophan pyrrolase and xanthine oxidase [1]. These enzymes are involved in a number of important pathways such as DNA synthesis, mitochondrial electron transport, catecholamine metabolism, neurotransmitter levels, and detoxification [1]. Iron is also involved in lipid metabolism. The multienzyme complex which catalyses the desaturation of stearoyl-CoA to yield the monounsaturated oleoyl-Coa (Δ 9-desaturase) contains not only cytochrome b5 but also a terminal desaturase enzyme which is a non-heure iron protein [2–4]. Thus, each desaturase enzyme complex contains two atoms of iron. Iron is also required for the production of polyunsaturated fatty acids [5]. Carnitine is necessary for the transport of long-chain fatty acids into the mitochondria for beta-oxidation. Its synthesis from trimethyl lysine involves two hydroxylases which require ferrous iron [6,7]. Hepatic levels of carnitine have been reported to be reduced in irondeficient rat pups compared to iron-supplemented controls [8]. Thus iron has an important role in various metabolic events related to lipids, such as oxidative degradation of fatty acids, synthesis of mono- and polyunsaturated fatty acids, plasmalogens and prostaglandins [9]. Although lipids play a key role in many health-related problems such as obesity, cancer and heart disease, investigations on the effects of iron deficiency on tissue lipid metabolism have been sparse.
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Larkin, E.C., Rao, G.A. (1990). Importance of Fetal and Neonatal Iron: Adequacy for Normal Development of Central Nervous System. In: Dobbing, J. (eds) Brain, Behaviour, and Iron in the Infant Diet. Springer, London. https://doi.org/10.1007/978-1-4471-1766-7_5
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DOI: https://doi.org/10.1007/978-1-4471-1766-7_5
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