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Original Paper

Polyunsaturated Fatty Acid Plasma Content in Groups of General Population with LowVitamin B6 or Low Iron Serum Levels

Krajčovičová-Kudláčková M. · Klvanová J. · Dušinská M.

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Institute of Preventive and Clinical Medicine, Bratislava, Slovak Republic

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Ann Nutr Metab 2004;48:118–121

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: July 23, 2003
Accepted: September 30, 2003
Published online: April 21, 2004
Issue release date: March – April

Number of Print Pages: 4
Number of Figures: 1
Number of Tables: 1

ISSN: 0250-6807 (Print)
eISSN: 1421-9697 (Online)

For additional information: https://www.karger.com/ANM

Abstract

Experimental and human studies describe the adverse effect of iron or vitamin B6 deficiencies on polyunsaturated fatty acid metabolism. Iron is present in end proteins of the δ6-desaturase enzyme complex, and vitamin B6 deficiency can affect the transmethylation reaction of proteins. Plasma polyunsaturated fatty acid content was estimated in apparently healthy subjects of the general population with no consumption of fish and low vitamin B6 serum levels (<3 µg/l; n = 21) or with low iron serum levels (men: <12 µmol/l; women: <10 µmol/l; n = 16) and compared to a control group (n = 22) with normal vitamin B6 and iron serum levels (in reference range). The activities of the δ6-desaturase enzyme complex were calculated as product/precursor (conversion indices). In groups of subjects with low vitamin B6 and low iron levels, δ6-desaturase activity together with δ5-desaturase activity (conversion of α-linolenic/18:3,n–3/ into eicosapentaenoic acid/20:5,n–3/) as well as the conversion index of docosahexaenoic acid formation (22:6,n–3) from 22:5,n–3 (second δ6-desaturase activity) were significantly reduced. The inhibition effect on fatty acid synthesis was more pronounced in subjects with low iron levels than in those with low vitamin B6 levels. The conversion indices correlated significantly positively with vitamin B6 or iron levels.

© 2004 S. Karger AG, Basel


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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: July 23, 2003
Accepted: September 30, 2003
Published online: April 21, 2004
Issue release date: March – April

Number of Print Pages: 4
Number of Figures: 1
Number of Tables: 1

ISSN: 0250-6807 (Print)
eISSN: 1421-9697 (Online)

For additional information: https://www.karger.com/ANM


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