<Emphasis Type="Italic">Trans</Emphasis> fatty acids and atopic eczema/dermatitis syndrome: The relationship with a free radical <Emphasis Type="Italic">cis-trans</Emphasis> isomerization of membrane lipids |
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Authors: | Email author" target="_blank">Carla?FerreriEmail author Federica?Angelini Chryssostomos?Chatgilialoglu Sergio?Dellonte Viviana?Moschese Paolo?Rossi Loredana?Chini |
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Affiliation: | (1) Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy;(2) Dipartimento di Pediatria, Policlinico Tor Vergata, Università di Roma “Tor Vergata”, 00133 Roma, Italy |
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Abstract: | The formation of trans FA residues in membrane phospholipids may be due to a free radical-catalyzed isomerization process occurring to the cis unsaturated FA moieties. Radical stress is well documented in inflammatory processes of atopic diseases, but no data are
yet available about a possible association with trans FA detected in these patients. We investigated the presence of trans lipid isomers in the erythrocyte and T-lymphocyte membranes of 26 children affected by atopic eczema/dermatitis syndrome
(AEDS). Trans lipid isomers were found in both cell membranes, up to a total content of 2.7 and 4.9% of the FA composition, respectively.
By using the geometrical trans lipid library derived from in vitro models of thiyl radical-catalyzed isomerization, oleic and arachidonic acid isomers were detected. The statistical significance
was evaluated by comparison with an age-matched control group. These results suggest the role of an endogenous free radical
isomerization path occurring to membrane unsaturated lipids, complementary to the dietary contribution, which can be involved
in the lipid impairment in AEDS. This study contributes to lipidomic research regarding the double bond structure and the
influence of a geometrical change of membrane lipids in physiology and diseases. |
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